摘要
为探讨和分析悬臂施工预应力混凝土连续梁桥的受力特点,本文结合某悬臂施工预应力混凝土连续梁桥的施工流程,采用基于平面杆系理论的大型通用有限元分析软件对其施工阶段及成桥状态进行了受力分析。计算综合考虑了基础不均匀沉降、初始预应力、混凝土收缩徐变以及结构温差等的作用。结果表明各项指标均满足规范要求,说明各设计参数均较合理。
In order to discuss and analyze mechanics features of pre-stressed concrete continuous beam bridge with cantilever casting construction, in combination with the construction procedures of a prestressed concrete continuous beam bridge with cantilever casting construction, mechanical analysis was given for the bridge con- struction stages and the completed bridge status by using a large and commonly used finite element software. In the analysis, the following were considered comprehensive- ly ： uneven settlement of foundation, initial pre-stress, shrinkage and creep of concrete and structural temperature gradient. The results show that all the indexes meet the re- quirements and specifications and all design parameters are reasonable.
出处
《工程建设》
2013年第5期29-33,共5页
Engineering Construction
关键词
预应力混凝土
连续梁桥
悬臂施工
prestressed concrete
continuous beam bridge, cantilever castingconstruction
