Comparison of the influence of amino trimethylene phosphonic acid (ATMP) and sodium gluconate (SG) on the performance of concrete are investigated in this paper. The comparison of the effects of ATMP and SG on concrete setting time at 20°C or 35°C, concrete slump loss, concrete compressive strength and...

The practice of structure design and detailing of a reconstructional high-rise building is introduced. To fully utilize the old structure and meet the requirement of the reconstructed structure, measures have been put forward. The enlarging of concrete pile cap and adding strip foundation-beam were used...

To take full advantages of high-strength concrete (HSC) and steel fiber reinforced full-lightweight concrete (SFRFLC), a new type of composite beams was suggested, which was cast by HSC superposed on SFRFLC in certain relative depths. Based on the tests of 13 reinforced HSC (in strength grades of C60...

By using the finite element software ABAQUS to establish the model of industrial workshop corbel, to explore the stress state under local load, and then increase the capacity of corbel by the form of prestressing in corbels’ end. According to the stress distribution of the calculation, analysis of corbel’s...

Air content in the concrete has an important effect on the performance. The relation of high-performance polycarboxylate superplasticizer with the air content of different grade concrete and the influence of air content in the concrete on the performance were studied. The relation of air content with...

Colored non-slip surface coating has an important role in the prevention of traffic accidents and obtains more and more attention and application. This paper based on chemical reaction principle of polymethyl methacrylate with a curing agent to produce a fast secondary crosslinking reaction coating mix....

The cracks existing in the concrete components have a strong impact on the safety of their structures. Ultrasonic testing is an effective non-destructive testing method for fast excluding surface and internal defects of concrete in construction engineering. The concrete specimens were tested by the calculation...

Explained the mathematics process of optimum design of structures in principle .Introduce the concept and course of ANSYS optimum design. Discuss how to use the optimum function of ANSYS and the watchful proceeding. The algorithm theory of first order method in ANSYS optimization method is analyzed,...

To ensure the seismic safety of existing buildings, the Taiwanese government has been pushing seismic retrofit of old buildings in recent years. In these projects, one of the most frequently used techniques is column-jacketing, which is accomplished by encasing existing columns with a thick cover of...

The need for estate mass appraisal imposed by the information-based for the current property tax, estate mass appraisal model what is composed GIS and VIKOR method was proposed. Firstly, house price effect factors were quantified by using GIS spatial analysis methods, secondly, combined with quantitative...

In order to find out the serious and long plagued leakage problems related to the seepage cut-off wall of Nanmenxia Reservoir, used the introduced British Groundvue series of Ground Penetrating Radar equipment, field test and verify work were implied, leakage location and path were determined. The results...

This paper studied the effect of triethanolamine(TEA), glycerin(PG) and lignosulphonate(CLS), used as grinding aids respectively, on cement particle size distribution and mortar strength. Grey connection analysis was made between cement particle size distribution and compressive strength. Results showed...

The paper deals with life-cycle cost analysis in relation to public contracts. Public contracts in the Czech Republic are a very sensitive and frequently discussed area where the safe price, which would not include other investment in both implementation and usage phases of the facility, is discussed...

Resistivity measuring can be used as a nondestructive testing technique for concrete. Against the influences of residual potential caused by piezoelectric effect and polarization effect on resistivity measurements, presented a fast, accurate measurement for concrete specimen resistivity, which is, fix...

Using the carbon fiber material reinforced concrete structure technology is a kind of advanced technology which is widely used at present, But this kind of convenient and quick reinforcement technology is used in the large concrete structures more and more,On the contrary ,In the small and medium-sized...

At present, the scientific community attaches importance to the problem of indoor air quality and building energy conservation seriously, the people’s requirement of indoor living environment is also improving constantly, improving the problem of air conditioning energy consumption of building energy...

Taking the DZ101 TBM(Tunnel Boring Machine) main beam as research object, with CAD/CAE used, a three-dimensional mechanical analysis model of the main beam was established. And then the static mechanical performance of the main beam was studied. The results show that: the maximum stress of main beam...

Rigid polyvinyl chloride (R-PVC) foam sheets were prepared in a continuous extrusion foaming system by using supercritical CO2 as the foaming agent. The effects of acrylic resin (ACR) on the rheological properties of PVC were investigated using a Brabender torque rheometer while other basic formula remained...

SBR process is similarwith DAT-IAT process on operating procedures, the biggest difference is whether the process is able to accept the continuous influent or not, the advantages of SBR process is that the operation and equipment is simple and quality of effluent is good. In terms of DAT-IAT process,...

The current building escape regulation is specification standard mostly according to the purpose and size of the building. Therefore, for the operation of the regulation, the classifications of building use must be clear and consistent, but the classifications of the architectural field and the fire-fighting...

The composite lightweight aggregate concrete self-insulation block is prepared by pumice, polystyrene particles and other materials. The self-insulation block has dumbbell-shaped hole filled with polystyrene foam. Its preparation and molding process are studied in the test. The self-insulation blocks...

The present study aimed to serve as fundamental data for improving user convenience at the initial consulting stage of future extension and remodeling of buildings. In order to analyze the users' degree of satisfaction on existing extended buildings, we analyzed the evaluation characteristics in each...

This study has been carried out to prepare basic data for modular Korean style house (Han-ok) which is to be continuously developed in the future. In doing so, errors and problems of designing, manufacturing and transportation in mock-up process of prefabricated Korean style house have been analyzed...

Basded on 2D and 3D geometry theories in stereology, there was the method of acquisition of three-dimensional geometric information parameters. On this basis of this method, with meso scale of microcracks for the marble, there was the result that the meso-scale marble microcracks spacing varying parameters...

looking for energy saving, high efficiency, high ratio of performance to price of building materials as hollow no beam floor mould box has been structure designers attention hot spot. In recent years, the study of the pre embedding of the corresponding inner membrane, the domestic and foreign scholars...

In order to study the reinforcement process and effect of different energy levels of dynamic compation,three energy levels of dynamic compation experiments with 3000,6000,10000 KN•m are proceed on deep gravel filling foundation.Get datas of ramming settlement , pore water pressure,vibrating velocity...

A 1:8 foundation model was designed and fabricated based on a spring vibration isolation steam-turbine generator foundation. The gravity was simulated through the hydraulic servo loading system, and the pseudo dynamic tests were carried out under the action of two different 7th intensity medium earthquakes...

The pseudo-dynamic seismic tests and lateral cyclic load tests for tie-columns and ring-beams confined masonry structure according to the seismic requirements and masonry structure strengthened with reinforced concrete beams and columns have been carried out. Cracks propagation pattern, hysteretic curves,...

A 1:2 reduced scale ordinary masonry structure model with no seismic fortification measures was designed in this paper. After 6 degree rare earthquake, this model has been reinforced by additional concrete beams. Comparedwithresilience, displacement, acceleration and other characteristic in the case...

U shaped, V shaped, and trapezoidal sections are widely used as closed rib sections in orthotropic steel bridge decks. This paper calculated three full-scale models of section based on the finite element method, and analyzed the magnitude and distribution of extreme stress of the constituent members...

Through the calculation and analysis on the stress state of deep corbel under local compression, reinforce deep corbel by external prestressing form. According to the calculation results, find the difference between the stress distribution constrained by prestress and that of normal working state, analysis...

The effect of cement dosage, polymer and fiber content on the mechanical properties and flexural toughness indices of the polymer and fiber composite modified cement concrete has been studied using an orthogonal experiment analysis method. And then the impact of these three factors on the 28d flexural-tensile...

Aiming at the problem of high cost of mechanics performance testing and uncontrollable of the experimental accuracy, a new modeling method which called "mapping model" based on Support Vector Machine (SVM) is proposed. The SVM regression nonlinear prediction model was established based on the small sample...

Concrete materials' damage and destruction under cyclic loading are known as concrete fatigue. Based on the domestic and foreign literature, this paper analyzes and explores the progress and development trend of the fatigue mechanism of concrete on the aspects of experimental study of concrete fatigue,...

Cement mortar is typical of a brittle material, with high compressive strength, low tensile strength, flexural strength, and bonding strength. This paper introduces that several polymer emulsions modified cement mortar. By researching the water-reducing, impermeability and mechanical properties of cement...

On account of cement concrete has many disadvantages,including pavement poor toughness, high brittleness, easy cracking and other fatal flaws, the concrete reinforced by polymer-modified fiber is recommended as a new building material. This paper focuses on studying the polymer-modified concrete of pavement...

The rheological parameters of Fresh SCC were examined through the theory of rheology, the rheological model of Fresh SCC was assumed to be H-B rheological model, the flowing time of Fresh SCC in the simulated L-box through Fluent, later compared with the flowing time of Fresh SCC in the actual L-box,...

Plant Growing concrete (PGC) plays an active role in ecological balance and environmental protection. It had be used in bank slope protection, parking lot, etc. By synthesize research data domestic and overseas, the article reviewed definition , structure, mix proportion, alkali environment renovation,...

With finely ground waste cathode ray tube glass sand, respectively replace 20%, 40%, 60% the proportion of ordinary sand in mortar, fly ash as mineral admixture in 0%, 10%, 20%, 30% the proportion of replacing cement.A total of 12 sets of mortar specimens were prepared.Use Accelerated Mortar Bar Test...

In order to invesigate the dynamic behavior of ice in compressive loading, tests on ice specimens at -100C~-250C were conducted by using the SHPB apparatus in the strain rate range from 500/s to 2000/s. Strain-rate effects and the influence of freezing preserve time were studied. Experimental results...

In order to study the influence of different loadsand cross section size on RC beam plastic hinge, a total of 13 reinforced concrete beamswith 5 section sizeswere tested under monotonic loading, and the calculation of pure bending plastic hinge parameters considering size effect isstudied based on experimental...

Fatigue load applied to a group of test beams at identical stress level and identical frequency but different cycles. Research on fatigue performance of the group specimens such as steel strain and deflection curve along with the change of fatigue load cycles. Reveal the fatigue failure mechanism of...

According to the characteristics and structure of high performance concrete, influence laws of new type lime and calcium sulphoaluminate expansive agent on mechanical properties, deformation properties and microstructures of C50 concrete were investigated. The results show that with the increase of doped...

A set of interior simulation experiments for quicksand were designed , which were carried out to study the law of flow and block for sand with different particle sizes and different water content from loose level which flow through the broken rocks above coal seam. The relation was obtained , which was...

The assessment of climate change due to global warming is a worldwide public concern. The impact of climate change on water resources is worth exploring for understanding the interaction between the climate and water resources and for decision-making in water resources management. In this study, a new...

There is a latent large block near the dam abutment of Jinping-I hydropower station, the stability of which is very important in the excavation process. As we know, Sarma's method is able to evaluate the stability of rock slopes with complex structural planes, because it takes into account the mobilization...

The ongoing retreat of temperate glaciers is expected to have substantial impacts on the water resources in mountainous environments. Located on the eastern slope of Mount Gongga, China, Hailuogou Catchment is an ideal location to investigate the complex hydrological systems of the proglacial zone. Physical...

Nanmenxia Reservoir has a significant benefit. Due to the complex geological conditions, the reservoir leakage was serious. The effect of previous anti-seepage treatment was not obvious. Finding out the leakage location and path of anti-seepage treatment was very important. Through the introduction of...

The penetration of the tail slurry suspended particles leads to the phenomenon of clogging, a higher seepage line and impact on stability of tailings dam. First of all, study influencing factors of muddy water infiltrationan,then an indoor simulation experiment is conductedaccording to the former study,...

This test explored suitable flocculating settling technological parameter for dredged sediment in Tongji Bridge Reservoir. It referred to sewage treatment plant’s sludge treatment methods, and used PAM, PAC, FeCl3, MgCl2, Na2CO3, Ca(OH)2 and KMnO4 as flocculants to improve water quality. Through single...

The geophysical prospecting, hydro-geological survey and a geological drilled borehole with the depth of 200 meters are used to ascertain the aquifer structure, hydro-geological conditions and preliminary hydro-geological parameters in an industrial plant project of East Africa. The magneto-telluric...

In order to put forward some feasible suggestions for the air emission in water transmission pipeline, this article mainly studies the bubble velocity under bubble flow scenario in the horizontal water transmission pipe. It was assumed that the bubble in the horizontal pipe could be regarded as a rigid...

Water level fluctuation will soften the rock and soil on the bank, induce the underground water fluctuated and decrease the shear strength, which will have the possibility to cause the stable slope to occur landslide. In this paper, the effort of variations of reservoir water level on landslide stability...

Tailings dam is an important control project of mine safety, once the instability, the greater harm. Tailings dam seepage damage is the main reason about tailings dam safety accident and tailings dam seepage problem belongs to the muddy water seepage. By considering the main hydraulic factors of the...

Han River is the largest tributary of the Yangtze River, the hydrodynamics characteristics in the lower Han River is under the influence of upstream flow and sediment discharge and the backwater level of Yangtze River. Based on the one-dimensional hydrodynamic mathematical model, the hydrodynamic characteristics...

Numerical computation with Transition k-kl- model is conducted to investigate the heat transfer characteristics for the single jet impingement cooling. The effects of the jet Reynolds number and the impingement spacing (jet-to-surface spacing, Zn/D) on heat transfer characteristic are researched. Results...

Aiming at the problem of the west side final slope stability of Bu-Zhao-Ba, at first, based on the critical sliding field technology, the most dangerous landslide slip surface is searched and identified, and then, the final slope stability of the 342 section is analyzed though various limit equilibrium...

In mining production, the slope’s stability is one of the decisive factors of safe production of mine. Security issues and economic losses caused by slope’s instability were immeasurable. Predict the slope’s deformation according to the monitoring data of slope’s displacement is an effective and feasible...

Nearly 40 years, high pressure water jet technology has developed rapidly and increasingly[1,2], and it also added new methods to foundation engineering and geotechnical engineering for our country[3,4,5], such as High pressure jet grouting[6] and coal or ore mining[7,8], so choose what kind of jet can...

In order to solve some problemsabout selectingblindly and randomly design and operational parameters ofmicro vortex clarifier .By studying the raw water from Kongmu-Lake, this experimentchooses PAC as thebest coagulant,and its best dosage is25 mg/L. Meanwhile the influence of micro vortex clarifierdosagein...

Universally accepted benefits of green roofs were classed to ecological environment benefits (EEB), social benefits (SB) and private economic benefits (PEB). Life-cycle assessment, contrast valuation, game-theory and economics cost-benefit with quality analysis and quantity analysis were used to evaluate...

One of the most difficult thing in urban village reconstruction is to balance the interests among relevant parties, which often causes the phenomenon that the higher FAR in urban village reconstruction than it was before. Based on the FAR transfer and property rights exchange, the technology of FAR Transfer,...

In order to optimize and select the plants which are suitable for highway slope, this paper chose the vegetation on Guanghe Highway as the research object to carry out the study on how to select plants for highway slope. Based on the experiment of cultivating eight different kinds of subshrub plants...

By integrating historical accumulation and outstanding natural landscape, cityscape planning could create impressive and easy-sensory city image. By means of natural situation, historical and cultural resources, Hebei Baoding historical district cityscape planning makes plan for landscape theme, landscape...

Brownfield structures often occupy extensive areas in urban areas of our cities. Owing to this fact, the compactness of built-up area of settlements and their overall urban economy is strongly impaired, which affects adversely primarily the expenses on operation of cities. This paper makes efforts to...

Tieweng Castle is found to be the earlist and well-preserved building with brick wall from three kingdoms periods until now. Therefore, Tieweng Castle is of great archaeological, academic, cultural and social values. With the rapid development of zhenjiang city, the activity of the urban construction...

Long-life housing is a type of housing available for about 100 years through replacement of its infills with its supports maintained for a long time. Yet long-life housing is not spread smoothly because of the lack of policies and publicity. In particular, considering the perception that initial construction...

In this paper, the traditional silt house of Wa ethnicity in Yunnan province would be researched as an example based on field measurement and Ecotect software simulation, and the characteristics and existing problems of natural lighting in silt houses were studied. The transformation strategies of the...

Long-life housing is a type of housing that can accommodate the function and performance to meet the needs of society and residents by changing and replacing infill parts such as exterior parts, interior parts and facilities that have a short life and are sensitive to social and functional changes while...

The current regulations related to building are scattered in more than 370 individual laws. Since the amendment of existing regulations and the legislation of new regulation have been going on, it is difficult to grasp the relevant regulations. Accordingly, in order to avoid duplication and to make systemizing...

In South Korea, apartment house has accounted for 59% of the total housing units in 2010, and the increasing number of one and two family members has led to a change in the area of the apartment house. Since the longlife housing plan aims to create housing that facilitates variability and repair through...

In this paper, the model tests of 7 degree frequent earthquake, 7 degree fortification earthquake and 7 degree rarely met earthquake are carried out by using the seismic ground motion parameters of a design reference period of 60 years. Displacement of platen and columns, restoring force of foundation...

VRV system is a more effective and energy-saving central air-conditioning system in office buildings due to its variable load modes and flexibility in adjusting refrigerant, compared with all-air air-conditioning system and air-water air-conditioning system. Nevertheless, VRV system is less applied to...

Based on the seepage conceptual model of present elevation and ultimate elevation, in the conditions of common water level and flood level, SEEP/W, the seepage analysis module of GEO-Studio was utilized to simulate the changing regularity of seepage field, and then the results will be substituted into...

Some residential areas and factories are located downstream the tailings pond. Once the tailings dam collapsed, the consequence will be very serious, so perfect prevention and emergency preparedness work is critical. And the prediction of tailings dam collapse affecting consequence is an important basis...

The characteristics of the coal bed geological body and the commonly used 3D data model, the data model and the data model of the coal seam are studied. Based on this, a 3D data model is proposed, which is based on multi-layer TIN. The corresponding data structure is designed, and the algorithm of multi-layer...

The problem of pedestrian across the street during the red light is always a focus of China's urban traffic management and difficult. This phenomenon has been improved after years of renovation in some developed cities such as Beijing. However, in some middle-sized and small cities, the problem of pedestrian...

The various influence factors of the slope stability is analyzed on the slope stability problems. Based on the basic principle and method of fuzzy mathematics and GIS, the slope stability analysis of fuzzy and comprehensive evaluation model is established and the grading index of the slope stability...

This paper gives the comparison of the moving average, S growth and adaptive updating forecasting(AUF) models based on the rainfall-induced soil erosion area experiment. The results show that (1) the average relative error of the moving average method is 5.7%–12.1%, while S growth model has an error...

The safety operration of tailing spond always plays a significant role in the whole mining production. With the tailings particle size is becoming smaller and smaller and the fill dam is higher and higher, the stability of tailings dam is becoming worse and worse, so the stability of fine-grained tailings...

During the foundation pit excavation,the prediction of ground surface settlement around deep foundation pit is directly related to the safety of the foundation pit excavation, surrounding buildings and pipelines, but the ground surface settlement of foundation pit has the characteristics of nonlinear...

In order to reduce the permafrost thaw disease of asphalt pavement caused by heat absorbing and conduction in permafrost regions, pass-resistance coupling structure is designed and its working principle is introduced. On the basis, heat resistance effect of pass-resistance coupling structure is analyzed...

This paper concludes on the application of straw in rural buildings and analyses problems existed in the application .Based on this, some new ways for straw application in rural buildings are explored in order to decrease the pollution from directly burning of straw in countryside and increase the reuse...

In order to study the dynamic responses of long-span suspension bridge with CFRP cables, a suspension bridge with CFRP cables which span of 896m is designed. The dynamic responses of suspension bridge with steel cables and CFRP cables are analyzed by ANSYS software, the effects of structural design parameters...

Based on ANSYS finite element analysis software, the finite element numerical analysis model of the medium pressure vertical pipe was established. The seismic response of pipeline was analyzed by using the structural transient dynamic analysis, which provides a theoretical basis for the seismic design...

An analytical method of SRF considering MDOF effect of bridge structure was put forward. The definition and calculation method of amplification coefficient were proposed. Calculation programs were compiled to analyze various equivalent pier MDOF model of bridge through the combination of finite element...

Variable weight synthesis method is a safety assessment method which is using the varied weight principle, base on analytic Hierarchy Process and combining the theory of Grey relevancy, it reduce influence that secondary cause is not obvious in assessment process, and make the result more correct and...

Location of Nanmenxia Reservoir is very important, and the reservoir has a significant benefit. But the leakage of dam foundation was serious; there was an urgent need to find out leakage location and path. The effect of previous treatment was not obvious, and it is very important to find out the situation...

According to the characteristics during construction of the metro incidents,an emergency capability evaluation index system of metro construction was established in the paper,which based on the relevant theory of the ability of emergency management. Build up a metro construction of emergency capability...

In order to study the effect of pounding at expansion joints of beam bridge on the seismic responses of bridge structure during earthquake the research is based on multi-particle of single degree of freedom system, and the pounding effects of adjacent girders on seismic responses with 3 different of...

The interaction analysis and evaluation on tunnel passing through underlying vacant areas is essential in highway construction. A 3D numerical model of tunnel at underlying vacant area has been established to analysis the deformation and mechanical characteristic of tunnel structures. According to the...

As a new type of underground engineering reinforcement technology, the pipe-roof method has shown its significant superiority in shallow buried large section tunnel engineering in high traffic urban areas. According to the two design scheme of pipe-roof engineering, the 2-D numerical analysis model has...

With the development of urban economy, highway passenger transport hubs as the internal and external communication bridge between cities, become more and more important. The traffic organization directly impacts the efficiency of the hub. This paper analysed the present situation of traffic organization...

The development and utilization of urban underground space is an effective way to use the limited space more reasonably and economically which has great practical significance for expanding the urban space capacity and improving the quality of the city. This paper explores planning idea, overall layout,...

A database of 30 deep excavations of field monitoring on Nanjing subway stations is presented and discussed. In order to reflect the differences of settlement in different area around the excavation, monitoring points were arranged at three areas: the position 1/4 and 1/2 long side, or the long side...

This paper studied on the fatigue experiment of two CRTSIII slab ballastless tracks on subgrade under high-speed train load, one was the track structure with self-compacting concrete thickness of 70 mm (the 70 mm's), the other was 90 mm (the 90 mm's). The two tracks were made of 1:1 full-scale test models...