钢管混凝土异型拱桥拱座力学特性分析  

Mechanical Property Analysis on Abutment of Concrete Filled Steel Tube Deformed Arch Bridge

作　　者：赵铁永 徐平 朱越峰 

机构地区：[1]华汇工程设计集团有限公司,浙江绍兴312000 [2]安吉县交通设计室,浙江安吉313300 [3]安吉县公路管理段,浙江安吉313300

出　　处：《中国市政工程》2011年第1期16-18,81,共3页China Municipal Engineering

摘　　要：采用有限元程序(ABAQUS),对一座主跨为132 m的下承式钢管混凝土异型拱桥进行空间分析,分别对一次落架和二次落架2种施工方法下的拱座应力进行了计算分析。结果表明:拱肋之间的拱座面上出现的应力已经超过了混凝土的抗拉强度设计值;一次落架的情况下,拱座受力变形后不再符合平截面假定。A through concrete filled steel tube deformed arch bridge(with main span of 132 m) is made spatial analysis by means of finite element procedure ABAQUS.The abutment stress is calculated and analyzed separately with two construction methods of removal of scaffolding once and removal of scaffolding twice.The results show that 1) the stress of the abutment surface between arch ribs is more than the tensile strength designed value of concrete;2) under the condition of removal of scaffolding once,the stressed and deformed abutment won't meet level section assumption any more.

关 键 词：钢管混凝土 异型拱桥 梁单元 有限元 实体单元 应力 

分 类 号：U448.220.1[建筑科学—桥梁与隧道工程]