Experimental Research on Anti-slip Performance of Cables at the Saddle of Partially Cable-stayed Bridge

DOI

10.2991/978-94-6463-398-6_33How to use a DOI?

Keywords

partially cable-stayed bridge; full-scale model experiment; multi-tube bundled saddle; Shear key anti-slip anchoring device; anti-slip performance

Abstract

To address the issue of cable anti-slip at the saddle of pre-stressed concrete partially cable-stayed bridges, typical cables were selected and a full-scale model of the bridge tower segment and reaction beam combination was designed and constructed to conduct experiments on cable slippage resistance of the multi-tube bundled saddles. Simulating the unbalanced cable forces generated by operational loads during the service period, the displacement and cable forces on both sides of the saddle were tested under low-cycle repeated loads to study the slippage resistance performance and cable force transmission rate through the saddle. The reverse slippage resistance capacity was also studied by swapping the active and passive ends. The ultimate slippage bearing capacity of the saddle was studied by providing maximum tension at the active end of the cable. The research results show that under the action of unbalanced tension in dead load and 1x, 1.4x, and 2.5x live loads, the cable displacement at the saddle end mainly changes due to the elongation of the prestressed steel strands, and there is no sudden increase in cable displacement indicating slippage failure. The measured cable force transfer rate from the active end to the passive end is only a maximum of 0.3%. The slippage resistance performance of the saddle is reliable under reverse loading conditions. When the test device can exert a maximum cable force of 7200kN and a cable force difference of 2500kN, the anchor system of the saddle still has reliable slippage resistance capacity. The experiment reveals the slippage resistance performance of the saddle anchor system and verifies its reliability.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Hailin Liu
AU  - Peng Wang
AU  - Yun Huang
AU  - Cheng Huang
AU  - Junliang Zhu
PY  - 2024
DA  - 2024/04/24
TI  - Experimental Research on Anti-slip Performance of Cables at the Saddle of Partially Cable-stayed Bridge
BT  - Proceedings of the 2023 5th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2023)
PB  - Atlantis Press
SP  - 330
EP  - 343
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-398-6_33
DO  - 10.2991/978-94-6463-398-6_33
ID  - Liu2024
ER  -