预弯组合梁桥的全时程时效分析理论及其应用  

Preflexed beam bridges long-term properties analysis theory and its application

作　　者：黄侨[1] 吴红林[1] 陈雪枫[1] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,黑龙江哈尔滨150090

出　　处：《哈尔滨工业大学学报》2003年第5期615-620,共6页Journal of Harbin Institute of Technology

摘　　要：针对预弯组合梁的施工特点 ,建立了一套综合考虑混凝土的收缩、徐变及钢材松弛影响的时效分析方法 .运用该方法可以完成预弯组合简支梁桥梁从预弯施工到通车运营以至若干年后 ,任意时刻任意梁体任意截面位置的应力、挠度的长期预测 .分析方法已通过了实验验证 。Based on the construction peculiarity of preflexed beam bridges, an analytical method is proposed for predicting properties of bridges structures. By which, time dependent factors such as shrinkage ?creep of concrete and relaxation of steel beams are synthetically considered for forecasting of long term properties of new type of bridge structures. A long term evaluation can be done for stresses and deformation at any section of beams and at any time from beginning to end of construction.

关 键 词：预弯组合梁桥 全时程时效分析 预弯预应力混凝土梁 桥梁工程 收缩 徐变 钢材松弛 施工 

分 类 号：U448.216[建筑科学—桥梁与隧道工程] U448.35[交通运输工程—道路与铁道工程]