Strut-and-Tie Method as a Basis for Optimization of Hoop Prestressed Tendons in Abnormally Shaped Anchorage Zone of Cable-Stayed Bridge Pylon

作     者：李跃 梅世龙 LI Yue 1,2,MEI Shi-long 1,31. School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,Wuhan 430074,China 2. Hanyang Building Management Centre,Wuhan 430050,China 3. Hubei Key Laboratory of Control Structure,Huazhong University of Science and Technology,Wuhan 430074,China

作者机构：School of Civil Engineering and MechanicsHuazhong University of Science and Technology Hanyang Building Management Centre Hubei Key Laboratory of Control StructureHuazhong University of Science and Technology 

出 版 物：《Journal of Southwest Jiaotong University(English Edition)》 (西南交通大学学报（英文版）)

年 卷 期：2010年第18卷第3期

页      面：206-214页

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：The National Natural Science Foundation of China (No.50925828) 

主　　题：Cable-stayed bridge Abnormally shaped anchorage zone Prestressed tendons Optimization 

摘      要：Based on full-scale segment model tests of the abnormally shaped anchorage zone of the Maling River cable-stayed bridge pylon and FEM analysis, its mechanical and deformation properties were obtained, and the validity of FEM analysis was verified. An optimal layout of prestressed tendons in the anchorage zone was obtained by using the strut-and-tie method （STM）. The comparison FEM analysis between the full-scale segment model and the optimal prestressed tendons model show that： the optimal model not only saves prestressed tendons, but also achieves the same cracking resistance; STM method is reliable and accurate in the analysis of the abnormally shaped anchorage zone of cable-stayed bridge pylon.