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Volume 16 Issue 3
Sep 2005
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Article Contents
Yu Zhu, Jun Wei, Manjuan Yang, Hao Li, Hongqing Liu. Analysis on Bearing Capacity of Tunnel-Type Anchorage of a Long-Span Suspension Bridge. Journal of Earth Science, 2005, 16(3): 277-282.
Citation: Yu Zhu, Jun Wei, Manjuan Yang, Hao Li, Hongqing Liu. Analysis on Bearing Capacity of Tunnel-Type Anchorage of a Long-Span Suspension Bridge. Journal of Earth Science, 2005, 16(3): 277-282.

Analysis on Bearing Capacity of Tunnel-Type Anchorage of a Long-Span Suspension Bridge

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  • Corresponding author: Zhu Yu, E-mail: zhuyu1210@163.com
  • Received Date: 28 Feb 2004
  • Accepted Date: 25 Jun 2005
  • Due to complicated rock structure and environment, a prototype test for a tunnel-type anchorage is infeasible. Based on the rock mass parameters from tests, a three-dimensional (3D) elasto-plastic analysis was performed to simulate the influence of the construction procedure of Siduhe bridge with tunnel-type anchorage (TTA) in Hubei Province, China. The surrounding rock and concrete anchorage body were simulated by 8 nodes 3D brick elements. The geostatic state of the complex geometric structure was established with initial data. The in-situ concrete casting of the anchorage body and excavation of the rock mass were simulated by tetrahedral shell elements. The results show that the surrounding rock is in an elastic state under the designed cable force. The numerical overloading analysis indicates that the capacity of the surrounding anchorage is 7 times that of the designed cable force. The failure pattern shows that two anchorage bodies would be pulled out in the end. The maximum shear stress appears 10 m before the back anchorage face. The maximum range influenced by the TTA under ultimate loads is about 16 m.

     

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