Research on key technologies in design of middle pylon of Taizhou Bridge  

作　　者：Ji Lin 

机构地区：[1]Jiangsu Provincial Yangtze River Highway Bridge Construction Commanding Department, Taizhou, Jiangsu 225321, China

出　　处：《Engineering Sciences》2012年第3期2-7,共6页中国工程科学（英文版）

基　　金：National Science and Technology Support Programs of China(No.2009BAG15B02);Key Programs for Science and Technology Development of Chinese Transportation Industry(No.2008-353-332-180);"333 High-level Personnel Training Project"Special Funded Projects in Jiangsu Province

摘　　要：At the middle pylon of a three-pylon two-span suspension bridge, the effect of unbalanced loads on the adjacent spans may result in a series of technical bottlenecks in design, such as stability and anti-slippage between saddles and main cables. This article presents the researches conducted on structure selection and behavior characteristics of middle pylon, interaction mechanism between main cables and saddles and their anti-slippage safety performance, elastic and plastic stability analysis and safety assessment of steel middle pylon, and fatigue design load and method for steel pylon of Taizhou Bridge. According to the research results, a longitudinal inverted Y shape steel middle pylon is used in design, effectively solving many technical difficulties, and this type of pylon has become a suitable middle pylon structural form for many three-ovlon two-soan susoension bridges.

关 键 词：three-pylon two-span suspension bridge structural behavior and selection elastic and plastic stability main cable and saddle anti-slippage 

分 类 号：U445.551[建筑科学—桥梁与隧道工程] TQ124.41[交通运输工程—道路与铁道工程]