2000•Tumu Gongcheng XuebaoRequires access
STUDY ON THE FULL SCALE SEGMENTAL MODEL OF A TOWER OF A CABLE STAYED BRIDGE OF THE SECOND YANGIZE RIVER BRIDGE IN NANJING
Yiqiang Xiang, Y I Shao-Ping, Deng Xiao-qing, Xu Xing
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Abstract
The anchorage zone of a cable stayed bridge tower is the key part of cable stayed bridge, in which stress distribution is rather complicated. A general plane analysis method does not reflect actual stress status. In this paper, the main project and method of experimental study of the full scale segmental model of cable stayed bridge tower of the 2nd Yangtze River Bridge in Nanjing are described. The small radius and large tonnage ring U-shape prestressed system is firstly used in the box tower. The test results and FEM spatial analysis values of the full scale segmental model of tower in the stage of prestressing force and the period before concrete cracking are given. They are in a good agreement. Cracking load and ultimate load of the full scale segmental model of the tower are also given. Some suggestions on design of the bridge tower are proposed.