外倾式矮塔斜拉桥主塔上塔柱空间受力分析  

The Stress Analysis of Main Tower Pylon Space for Extroversion Type Low Tower Cable-stayed Bridge

作　　者：关伟[1] 

机构地区：[1]山西省交通科学研究院,山西太原030006

出　　处：《山西交通科技》2017年第5期38-41,共4页Shanxi Science & Technology of Transportation

摘　　要：以浮山县丞相河特大桥(87+160+87)m双塔斜向双索面PC矮塔斜拉桥工程为背景,以主桥"Y形"主塔结构上塔柱为研究对象,对主塔上塔柱采用有限元软件进行三维空间实体建模,从索塔结合部索鞍、主塔上塔柱根部局部应力计算来分析外倾式矮塔斜拉桥上塔柱的应力状况,并提出降低主塔上塔柱根部应力的施工措施,以确保主塔结构在施工时的安全、稳定性,可供同类型桥梁在桥型结构设计时参考。Taking a twin towers oblique double cable plane PC low tower cable-stayed bridge project of Chengxianghe extra-long bridge in Fushan County as the background, taking the main bridge ＂Y-shaped＂main tower structure pylon as the research object, using the Midas FEA 3.6.0 finite element software, this paper had the three-dimensional spatial solid modeling. From the cable saddle of cable tower integration, main tower pylon root local stress, it also calculated and analyzed the stress state of extroversion type low tower cable-stayed bridge pylon and put forward the construction measures of reducing the main tower pylon root stress, which ensured the safety and stability of the main tower structure during construction, provided the reference for the same type of bridge in the design of bridge structures.

关 键 词：PC矮塔斜拉桥 Y形主塔 力学平衡机理 索鞍 应力 临时约束 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]