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机构地区:[1]中南林业科技大学土木工程与力学学院,湖南长沙410004
出 处:《公路工程》2016年第5期147-150,171,共5页Highway Engineering
摘 要:针对洞庭湖大桥君山侧副孔不对称5跨预应力混凝土连续梁桥,运用桥梁通用有限元软MIDAS/CIVIL软件,建立结构仿真计算模型,模拟箱梁施工过程,包括T构箱梁挂篮悬臂浇筑、边跨箱梁支架现浇及合拢、体系转换等全过程,考虑结构自重、预应力及混凝土收缩徐变等荷载,进行结构计算分析,得到了结构的应力与变形,为桥梁施工时主梁的线形和应力控制提供理论依据。For the asymmetric 5 span prestressed concrete continuous Girder bridge of the Junshan side of the Dongting Lake bridge, based on the general finite element software MIDAS/CIVIL, the structural simulation model is established, and the whole process of box girder construction is simulated, including the T frame box girder cantilever hanging basket casting, cast-in-place and closure up of the side span box girder, system transformation. Then considering the load of the structure, such as the weight of the structure, the shrinkage and creep of the concrete,the stress and deformation of the structure are calculated and analyzed, which provides a theoretical basis for the linear and stress control of the main beam in bridge construction.
关 键 词:不对称连续梁桥 施工过程 应力与变形 有限元分析
分 类 号:U448.215[建筑科学—桥梁与隧道工程]
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