Accurate stress analysis on rigid central buckle of long-span suspension bridges based on submodel method

作     者：WANG Hao LI AiQun GUO Tong MA Shuang 

作者机构：College of Civil EngineeringSoutheast UniversityNanjing 210096China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2009年第52卷第4期

页      面：1019-1026页

核心收录：

学科分类：0810[工学-信息与通信工程] 081406[工学-桥梁与隧道工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0814[工学-土木工程] 0702[理学-物理学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Supported by the National High Technology Research and Development Program ("863" Project) (Grant No. 2006AA04Z416) the Key Project of the National Natural Science Foundation of China (Grant No. 50538020) the National Natural Science Foundation of China for Young Scholars (Grant No. 50608017) the Ph.D. Pro-grams Foundation of Ministry of Education of China (Grant No. 200802861012) 

主　　题：suspension bridge central buckle accurate stress submodel method field measurements 

摘      要：Runyang Suspension Bridge (RSB) with the main span of 1490 m is the longest bridge in China and the third longest one in the world. In this bridge the rigid central buckle is employed for the first time in the mid-span of the suspension bridge in China. For such a super-long-span bridge, the traditional finite element (FE) modeling technique and stress analysis methods obviously cannot satisfy the needs of conducting accurate stress analysis on the central buckle. In this paper, the submodel method is in- troduced and for the first time used in analyzing the stresses of the central buckle. After an accurate FE submodel of the central buckle was specially established according to the analysis results from the whole FE model, the connection technique between the two-scale FE models was realized and the ac- curate stresses of the central buckle under various vehicle load cases were then conducted based on the submodel method. The calculation results were testified to be accurate and reliable by the field measurements, which show the efficiency and reliability of the submodel method on analyzing the mechanical condition of the central buckle of long-span suspension bridges. Finally, the working be- havior and mechanical characteristics of the central buckle of the RSB under vehicle loads were ana- lyzed based on the calculation and measurement results. The results obtained in this paper can provide theoretic references for analyzing and designing the rigid central buckle in long-span suspension bridges in future.