节段预制拼装箱梁架梁施工安全性分析  

Safety study of the box girder erection for the box girder precast segment assembled

作　　者：曹新恒[1] 

机构地区：[1]中铁二局股份有限公司,四川成都610031

出　　处：《山西建筑》2016年第9期189-192,共4页Shanxi Architecture

摘　　要：通过大型有限元软件ABAQUS,建立了东莞地铁R2线2312标的节段预制拼装简支箱梁三维空间有限元仿真模型,论证了在架桥机过跨和架梁两种最不利工况作用下的梁体受力性能,提出了梁端附近混凝土拉应力过大问题的施工对策,并分析论证了临时支撑措施的有效性,保证了架梁施工荷载下结构的安全性。By ABAQUS establishing a three-dimensional finite element model of the Dongguan metro R2 line 2312 standard segmental prefabricated box girder,it is demonstrated that the box girder is affected by the cross and frame beam construction,give a solution to avoid the problem of the oncrete tensile stress near the end of the beam is too large,and through analysis,it is proved that the temporary support measures are effective,ensured the structure safety of erecting beam construction load.

关 键 词：架梁施工 箱梁 空间有限元法 架桥机 

分 类 号：U445[建筑科学—桥梁与隧道工程]