A parametric design macro program of five kinds of hyperbolic flat lattice shells was developed by using APDL (Ansys Parametric Design Language) parametric design language.On this basis, hundreds kinds of working conditions of three kinds of hyperbolic flat lattice shells were selected for the change...

In this paper, the data of soil erosion from Mangya, Lenghu, Xiaowouhuo, Golmud, Ulan and Da six Dan Chai ecological monitoring stations monitoring data ranged from 2005 to 2015, and MODIS and GIMMS remote sensing monitoring NDVI values from 1985 to 2015. This thesis researched characteristics of the...

To identify the effect of fertilization on the heavy metal concentration and assess the soil environmental quality, Meadow Black Soil (MBS) samples were collected from Long-term location fertilization base located in the Changchun City, Jilin Province of China. Subsequently, MBS samples were analyzed...

Using ANSYS and subspace iteration method to analyze natural vibration frequencies of Three-directional grid LICS,Fred Boolean type LICS,Single-diagonal LICS,Double-diagonal LICS .The figures of natural frequencies and corresponding shapes are obtained.Macro parameters include span S, rise f, valley...

The compressive strength, flexural strength and fatigue properties of foamed lightweight soil with different mix proportions were systematically analyzed through experiments in this paper. And the main factors influencing the mechanical and fatigue properties of foamed lightweight soil were studied....

In order to investigate the application technology using construction waste to product recycled aggregate concrete, the effect law of recycled aggregate content and brick content in the recycled aggregate on mechanical properties of recycled aggregate concrete, include compressive strength and flexural...

As an important infrastructural facility, the energy consumption of the railroad during the built is the main part among the overall process. There have not the criteria to evaluate the contractors on saving energy during building the railroad. A system of saving energy,concluding four main indicators...

Considering the adverse effects of the multi-point input of large-span spatial structure, the SMA damper bar was designed to replace original bars in the structure. In this paper, there were two projects to replace SMA damper bars, one was replaced of some lower chord's bars, The other was replaced of...

At present, highway traffic noise prediction models mostly use the equivalent continuous A-weighted sound pressure level to predict the noise within the country as well as in abroad, and they also usually use one line source to simulate the noise source in the simulation analysis of highway traffic noise,...

Through the analysis on the Dahei Mountains research area of eco-conserving division in Changchun, this paper puts forward the exploration of selection mode of new urbanization path of villages and towns in conserving area, which that is are eco-urbanization mode, local urbanization and new urbanization...

In this paper, the transfer matrix method is firstly used to analyze the free vibration of a simply-supported rhombus plate. Firstly, using coordinate transformation formula, the solution domain for a rhombus plate is converted into a rectangular one, and the governing equations and the corresponding...

The emergency handling Peak Ground Acceleration (PGA) has been used as a measure of braking for High-speed Railway (Shinkansen) during earthquake in Japan, and it necessitates to know the correlation between PGA and other strong motion indices, e.g. un-filtered Peak Ground Acceleration (PGAu), Japan...

Lhasa is located in the middle of the Tibetan plateau, north of the Himalayas, its climatic characteristics and the form of residents are representative of the Tibetan Plateau. In order to master the indoor thermal environment of rural highland in Tibet, this paper tests the indoor and outdoor thermal...

Electric flux method was adopted in this paper to carry out experimental study on influences of fly ash and basalt fiber contents on chloride penetration resistance performance of high-performance concrete. First, influences of fly ash content were investigated by virtue of uni doped fly ash. Then, basalt...

Based on the investigation of the distribution of strata in the downtown area of Guangzhou City, simulating the stress path of excavating foundation, the triaxial pressure tests on isotropic consolidation and K0 consolidation conditions, the lateral unloading tests and the axial unloading tests on mucky...

The layout of fare gates have become one of the most significant bottleneck in streamline organization. In actual practice, the layout principle and combining scheme are not clearly demonstrated. Here, we build a multistage pedestrian-and-gate route choice model on account of time cost based on research...

In the Yellow Sea and the Bohai Sea, the five layers tidal currents fields of M2, S2, K1 and O1 constituents were computed hourly in a period based on the three-dimensional model established by Jan O. Backhaus. The computation results indicate that three convergent and divergent regions of tidal currents...

For the landslide caused by rainfall, the idea of designing the drainage mechanism with the anchoring system is proposed. The laboratory test has proved that the drainage- anchorage composite structure is feasible. The finite element numerical analysis model is established .The parameters such as the...

In order to study the influence rule and mechanism of rich-silicon iron ore tailing powder(IOTP) replacing micro-bead in UHPC, the influences of different specific surface area and dosage of IOTP replacing fly ash on its strength and liquidity were tested. Moreover, the pore structure and hydration products...

This paper analyzed the principle of performance-based seismic design method, compared and analyzed the performance-based seismic design method and the bearing capacity-based seismic design method, introduced seismic design methods of structure design code of several major countries in the world, analyzed...

From the concept of asphalt pavement recycling technology, The condition of old road is investigated and evaluated, In view of the problems of Urumq, pointed out that the applicable conditions and the advantages and disadvantages of the problems by the materials of Regenerant regeneration performance,...

There are distinct growing tendencies in the span and height of electrical transmissions lines. However, little attention was paid on parameter analysis of wind-induced vibration of electrical transmission lines, especially on the gradient height. By means of a finite element software, electrical transmission...

The intensity contour map can directly reflect the damage degree of an earthquake, and it is an image representation of a seismic influence field or ground motion intensity field. The Kriging interpolation method is an unbiased and optimal interpolation method, and this method can be used to rapidly...

The numerical simulation method was used to investigate the flow past a single cylinder. The flow field structure and the characteristic parameters of the cylindrical surface were analyzed by large eddy simulation. The numerical results show that the calculation of the length of the recirculation zone...

Based on the cable theory and the curved beam theory, the 3-DOF galloping model of iced transmission lines was established. According to the Hamilton principle, the three-freedom galloping models based on cable theory, based on the curved beam theory, based on the curved beam theory considering the boundary...

With the implement of the 13th Five-Year Plan and the Belt and Road Initiative, there will be a new railway construction cycle. Considering the influence that the density of railway network and population have on regional economic, a reasonable arrangement of the railway expansion gains its' necessity....

UHTCC is a new type of material which is widely used in this study. It is effective to improve the performance of damaged reinforced concrete and improve its durability. UHTCC is applied to the reinforcement of concrete structure. There is no clear and effective method of calculating. How much of the...

The parametric analysis is carried out by using numerical simulation methods for the flow around a single cylinder. The influence of the three-dimensional effect, grid form, time step, turbulence model and sub-grid scale models on the calculation results are discussed, respectively. The analysis results...

At present, it has many bid evaluation of construction units that mainly rely on an expert scoring method to determine the successful bidder. That is the reason why the evaluation process has a great subjective. Thus this paper wants to propose a comprehensive evaluation model by combining entropy method...

In order to reduce the risk of hazardous materials transportation under the background of terrorist attacks,a method based on genetic algorithm is proposed.Firstly,a hazardous materials transportation route optimization model is designed with objective function of minimizing transportation risks and...

In this paper, a method for determining the parameters of the RHT material model, which can hardly be determined by total experiments, based on the combination of experiment and numerical simulation is proposed. The determination process and verification are analyzed taking UHMWPE fiber reinforced concrete...

The vertical and torsional vibration basic frequency estimation formula of suspension bridge on "Wind resistant Design Specification for Highway Bridges" is introduced. Finite element model of HUMEN suspension is established. Whole vibration models and frequency are obtained by modal analysis, and it...

In this study, kiwifruit seedlings were used as the materials, were applied 100 mol/L melatonin (MT) solution by root irrigation, to investigated the effects of MT on kiwifruit' antioxidant activity under low light. The results showed the content of TPC, TFC and TFAC of kiwi leaves under MT treatment...

The development of rural tourism industry not only brings an expanded revenue model in the Chinese tourism market, but also requires the improvement of rural infrastructure, the quality of tourism service, and establishment of local rural characteristics. Therefore, how could the governmental interventions...

According to the space-volume average modal,the elastic modulus is estimated by the mineralogical composition and its content.This paper discusses correlation between mineralogical composition and elastic modulus of clay rock for geological repository at home and abroad.Some general conclusions are drawn...

Using one-year-old wild Actinidia deliciosa as the experimental material, the effects of melatonin (MT) on the antioxidant system of kiwifruit seedlings under heavy metal Cd stress were studied by root irrigating method. The results showed that after MT pretreament, the contents of antioxidants (TPC,...

In this study, the wild kiwifruit seedlings were used as the research object to investigate the oxidation resistance of exogenous melatonin on leaves of kiwifruit seedlings under copper stress, adopting the root irrigation method. The results showed that exogenous melatonin effectively increased the...

With the combination of the visual perception experience and the qualification of NCS color system, a study on color matching of facade of residential buildings in Harbin is made. Analyzing the frequency of occurrence of blackness, chromaticness and hue collected on the residential facade, there appears...

Aiming at the problem of the workpiece surface hardness influenced by the fatigue wear of steel ball during strengthen grinding processing, experimental and mechanical analysis were performed. The relationships between the radius of steel ball and the stress and strain in the machining process were analyzed,...

To investigate the effect of exogenous melatonin (MT) on the growth of kiwifruit seedling under weak light treatment, in this study, kiwifruit seedling was used as the experimental material, applied 100 mol/L MT solution by root irrigation, and determined physiological indexes under low light intensity....

This paper presents an integrated simulation system for building structures. It is to satisfy the engineering requirements for high performance simulation and is a coalition of the traditional design software and general finite element analysis (FEA) software. Based on this system,the designed models,...

In this paper, the data processing center of the structural simulation system, an integrated simulation system for building structures, is presented. It includes two parts, i.e. the transformation from structural model to FE model and the result assessment. The former one includes the following contents...

In this paper, the application with Abaqus for the structural simulation system, an integrated simulation system for building structures, is presented. It is aimed to provide dynamic elastic-plastic analysis for reinforced concrete structures. There are two key points would be emphasized in this paper:...

Improve the anti-terrorism capability is one of the most effective ways to ensure public security under the current situation of terrorist threat. A fuzzy analytic hierarchy process (FAHP) to analyze and evaluate the important buildings anti-terrorism capability is proposed. It establishes the hierarchy...

The research and practice have proved that it is effective, easy to construct, and reliable quality to reinforce the concrete column with fiber cloth.Through the study of using FRP reinforced concrete cylindrical experimental process from domestic and foreign scholars,the preparation process of concrete...

Membrane bioreactor (MBR) technology is composed of membrane separation and biological disposal processes, which is a new wastewater treatment technique with high efficiency. It has been widely applied in municipal and industrial wastewater treatment due to the unique advantages of high-quality effluent,...

Materials transportation is the basis of road and bridge construction, which is an important part of national infrastructure construction. Materials transportation processes of road and bridge projects have some deficiencies in process management, information exchange, status monitoring and process optimization...

Combined the actual monitoring results of wastewater of Northeast Pharmaceutical Group, "grill + grit + primary sedimentation (grease) + regulation pool + hydrolytic acidification + contact oxidation + secondary sedimentation" was proposed to applied in the process. The treatment effects of natural sedimentation...

A fastener-style tubular steel formwork-support (FTSF) is often used for temporary support during the construction in China for its convenience and applicability. In order to modelling and performing probabilistic analysis of the stability bearing capacity of FTSF, actual data of semi-rigid joint behavior...

Luminance ratio or contrast is a key indicator for accessible signs' color design. Existing researches had different results due to inadequate consideration of influencing factors. This project designed a subjective evaluation experiment within normal illumination environment, the minimum luminance ratio...

Model test studies based on the similarity theory was conducted to solve the problem of vibration effect of tunnel surrounding rock under push-type cyclic blasting excavation. The model was constructed with a ratio of 1:15. By simulating the tunnel excavation of push-type cyclic blasting, the influence...

Facility location problems arise for planning and stationing serve centers. The solution of facility location problem can be modeled by a fixed point model. The hard point is that the collection of alternative sites is non-convex set while solving facility location problem between urban inner and outer...

the development of information, digital, and artificial intelligence, the development idea of intelligent Earth formed and opened the era of wisdom city, smart cities generate intelligent environmental facilities, operating as the data carrier running for wisdom city and the residents' smart living facilities,...

The estimation of annual average earthquake losses in life long period for simple multi-story isolated-based reinforced concrete (RC) frames based stochastic method models is the focus of the article. An innovative seismic fragility methodology is firstly adopted for seismic loss estimation, that damage...

Silt foundation of the power plant in Shangqiu area was select as the research object, to verification the effect of foundation treatment for CFG pile and CFG pile + vibro-replacement stone column pile methods. The results showed that: bearing capacity of the foundation was improved after the CFG pile...

In this study, the bond behavior between plain steel bars and micro steel fiber reinforced cementitious composites was investigated experimentally. The parameters investigated include concrete strength and fiber volumetric ratio. Only plain steel bars with diameter of 12 mm was investigated in the study....

The damped vibration method is a method for detecting the grouting compaction of sleeves with embedded damping vibration sensors. The damping vibration sensor should be inserted into the grouting outlet as deep as possible before grouting, and testing can begin in 5~10 minutes after finishing grouting....

The anhydrite formation has a highly negative impact on the stability of cement slurry, which can cause failure of cementing operation upon well construction. In combination to anhydrite characteristics of Missan Oilfields, herein, a new type of over-saturated brine cement slurry was established. The...

When metro system encounter unforeseen circumstances leads to the system operating abnormally, passengers travel plan's adjustments need to rely on dynamic guidance information to complete, therefore, metro dynamic guidance information's completion degree have significant influence to network passengers'...

In order to reduce the entire network sensor node energy consumption, this text gives an algorithm to track the target effectively and to reduce the energy using the uniform speed and variable speed motion target tracking in Wireless sensor networks as the background. In addition, in order to ensure...

The flowering stage is the key yield determinant period of soybean. Short-duration water stress occurring during this stage significantly reduced soybean development and final productivity. Seed treatment with uniconazole powder application plays an important role in alleviating the adverse effects of...

Positioned on sustainable development philosophy, aiming to build a concise and systematic appraisal index system for green campus, the paper builds the index system and hierarchy structure model from perspectives of planning and ecology, energy and resources, environment and health, operation and management,...

Uncertain errors induced in construction process could affect the stability of free-form shells. Considering shell thickness deviation, the stochastic characteristics of buckling loads are investigated using Latin hypercube sampling coupled with Newton-Raphson method. In addition, a sensitivity analysis...

Different with definition of continuum mechanics used for beam element, in-plane drilling degrees of shell element are usually based on Allman mode or additional rigid rotation of element sides, and assumption of plane section for beam element is another inconsistency with shell element, at last, the...

In order to simplify the modeling job for analysis of reinforced concrete structures, longitudinal rebar can be simulated with equivalent box section instead of being embedded in concrete section. Separate model and monolithic model are researched by using numerical method. Numerical results show that...

With the development of information technology, under the blessing of cloud computing, big data and 3 s (GIS, GPS, RS) technology, city has entered a stage of wisdom development through the construction and development of informatization, digitization and artificial intelligence period, wisdom city has...

In order to seek the low-carbon environmental protection and high service level of logistics distribution,a multi-objective optimization model of logistics distribution network is proposed.Firstly,the multi-objective optimization model of logistics distribution network is established by using the multi-objective...

Long span suspension bridge has a long period of vibration, which is very sensitive to long period ground motion, so it is very important to analyze the seismic response under the long period ground motion. Taking a super long span suspension bridge as the research object, three-dimensional finite element...

The test requirements and evaluation criteria for efficiency of EV motor drive system were briefly introduced basing on China national standards. Then the difference of efficiency performance was analyzed using data collected from real road condition and test bench. From data of test bench,a pre-evaluation...

To study the influence of pile-soil interaction on the seismic behavior of PHC piles, this paper takes the PHC pile in the soft clay as the research object, which is simulated by fiber beam element, and the pile-soil interaction is simulated by using equivalent embedded method and p-y soft clay soil...

Water conservancy project is a system engineering, including rural town, city and county, and many aspects of industrial and mining enterprises and special facilities. The resettlement work involving many points, wide, long, is the focus and difficulty in the implementation of the water conservancy project,...

Micro film advertising is a kind of propaganda means which is used to transmit information to the public for a specific need. The spread of the main micro film advertising is the initiator of brand advertising, which is mainly spread through two ways: one is the use of video sites, social networking...

With the popularity of social media applications, micro-blog has become the main carrier to reflect social public opinion. On the one hand, the extensive application of micro-blog has a positive effect on the development of national social and cultural aspects, on the other hand, it will produce some...

With the increase the traffic congestion, it is urgent to develop the bus priority control to improve the public transit attractiveness; Recently the application of the tram has increased the complexity of the intersection priority control. The priority traffic control strategy can reduce the delay of...

Numerical or model test is a main way of understanding failure mechanism of slope or landslide. Practical test is often limited by cost, time and difficulty in determination of material similarity ratio, which don't lie in numerical one. This paper develops a simulation system of slope or landslide virtual...

In this paper, the field synergy principle is used to simulate the mass transfer performance of hollow fiber membrane modules under vibration conditions. The mass transfer characteristics of hollow fiber membrane modules are investigated by changing the vibration frequency, amplitude and fluid velocity....

Railway green construction is one of the important measures to realize the sustainable development of railway. At present, the research on the evaluation standard of railway green construction is still in the exploration stage. Based on the "green construction evaluation standard of construction engineering",...

The effect of pomelo peel on the adsorption of organic dye rhodamine B (RB) was explored through a series of experiments. The influence of factors including pH value, initial concentration of RB, dosage of pomelo peel, and temperature upon adsorption of RB in aqueous solution was studied. The results...

Potential mechanism of inhibition of Sulfate Reducing Bacteria (SRB) at the presence of ZnO/Tourmaline was further investigated by Density Functional Theory (DFT) calculation. The structure and electronic states analysis quantitatively and qualitatively dictate the selectively catalytic generation of...

In the field of grid-connected distributed energy resources (DER), telecommunication network plays an important role to carry various information and control messages. With the advantages of high bandwidth and reliability, the communication network has already played an important role to support distributed...

The main goal of this work was to use wheat straw (WS) in the production of environmentally sound material using corn based adhesives (CA). Treatments of WS with NaOH and hot-water were undertaken to evaluate the effect of such treatments on the performance of produced material. The influence of material...

This paper analyze and study the condition of renewable energy in Beijing's new airport area, and puts forward the use solutions and suggestions of renewable energy in the new airport area.

Along with the development of "Internet plus",the traditional relationship between doctors and patients is undergoing a radical change.Nowadays,it is advisable for patients to search the relevant information about the disease and the doctor through the websites before go to the hospital by themselves.This...

A pot experiment was carried out to study the difference of cadmium (Cd) accumulation characteristics of four Bidens species. The results showed that Bidens biternata had the highest biomass and Cd accumulation amount of whole plant than the other three species under Cd-contaminated soil. The root and...

Starting from the research significance of Ultra Wideband positioning, with the basic principles of Ultra Wideband ranging and location as the foundation, this paper introduces four common methods of Ultra Wideband positioning from the two aspects of the basic principle of the locating methods and positioning...

Compared with ordinary concrete, recycled concrete has multiple weak interface structure, which is the main reason for the low performance of recycled concrete. Based on the construction of the recycled concrete multi interface model, the vivtorinox hardness of three kinds of interface structure of recycled...

By studying the microhardness of different interfaces of sulphate-eroded recycled concrete, the width of the transition zone of different interface from different strength grades was determined. And the influence of sulfate age on the microstructure of regenerated concrete was studied, which reveal the...

The volcanic rocksdistributed in Pingzhuang-Machang basin of Jianping countryshould belongs to YixianFormation,thevolcanism may be divided into two subcycles.The volcanic rocks mainly consists of rhyolites,trachyte and trachyandesites. The geochemical characteristicsindicate that the volcanic rocks belong...

Taking carbon footprint as the signal of production quantity, it creates the signaling game model of pricing between firm and consumer. By graphic analysis tools, such as indifference curve, it researches deeply the equilibriums of the model, such separating, pooling and hybrid equilibriums. The results...

Formaldehyde (FA) in food is a hot research topic, it widely exists in many organisms, such as marine products, meat and plant material. As a serious threat to human health, FA of manmade addition in food was forbidden in China. This paper summarized the advance in detection FA in food, and the work...

In view of the negligence of unbalanced development between regions in current research on the energy rebound effect in China, we provide a calculation method based on stochastic frontier production function. By using China's provincial panel data from 1977 to 2014, this paper estimates energy rebound...

Analyzes the carbon emission characteristics of power system before and after the introduction of pumped storage power station. To evaluate the environmental benefits of pumped storage power station combined with new energy peak load. For thermal power, pumped storage - thermal power, wind power - pumped...

The influence of wind energy on the energy cycle and atmospheric circulation in nature and the possible impact on the climate are the hotspots in recent years. The comprehensive analysis of domestic and foreign research shows that the wind farms have a certain impact on regional and global precipitation,...

the problem of environmental protection is a hot topic in recent years, the sewage treatment is an important aspect of environmental protection.In view of China's current sewage treatment problems, a new MBBR filler for MBBR process can improve the sewage treatment effect.

In this paper, aimed at reducing deviation of the output characteristic between DFIG model and operating wind turbine generator. A method using measured data for modifying the model of DFIG is provided. Firstly, the data fitting method is used to get the mathematical model of the operating turbine. Secondly,...

The connection of wind farm causes influence on the power system voltage stability because of the volatility and intermittency of wind power. In this paper, based on researching a regional wind farm, the influence of power fluctuation on power system voltage is analyzed. The influences of different settings...

By analyzing the characteristics of renewable resources in China and low carbon power generation situation, the article put forward the concept of green electricity subscription. And according to power system developing model ,market situation in our country, green electricity subscription models for...

In this study, we investigate the effects of three types of non-structural reinforced concrete (RC) facade walls on the impending advanced failure of an RC frame. Linear and nonlinear static analyses are performed for RC frames with and without non-structural walls under three different column loss scenarios....

In consideration of Chinese policy on comprehensive regulation of volatile organic compounds(VOCs) and sewage charges, several methods for quantitative calculation of respiratory loss in crude oil tanks are analyzed and compared to evaluate the VOCs emission of petrochemical enterprises reasonably, including...

A three-dimensional eddy model considering buoyancy was established to simulate vertical buoyant flow from a square orifice in static ambient. The hybrid finite analytic method with stagged grid was used to solve this model. Experiments were made to confirm the efficiency and validity of the model, and...