矮塔斜拉桥塔墩梁固结实体分析  

Entity Analysis of Pylon-pier-beam Rigid Fixity Structures of Extrodosed Cable-stayed Bridge

作　　者：曹伟宏[1] 石少华 

机构地区：[1]河北联合大学建筑工程学院,河北省地震工程研究中心,河北唐山063009 [2]核工业西南勘察设计研究院,四川成都610061

出　　处：《河北联合大学学报（自然科学版）》2014年第4期104-109,共6页Journal of Hebei Polytechnic University:Social Science Edition

摘　　要：以黄龙带矮塔斜拉特大桥为工程背景,利用大型通用有限元软件MIDAS/FEA对塔梁墩固结部位进行详细应力分析。确立6种不利荷载工况后,计算了固结部位的纵向正应力、横向正应力、竖向正应力、主拉应力及主压应力,分析结果表明了该结构部位的应力分布情况,并提出相应的优化处理方案,为设计和施工提供了科学的理论依据。Based on the huanglongdai extrodosed cable--stayed bridge , with the large general--purpose fi- nite element software MIDAS/FEA,the stress of pylon--pier--beam rigid joint is analyzed in detail. The unfavorable parts of the pylon--pier--beam loading conditions is established. The longitudinal stress , transversal normal stress , vertical normal stress , principal tensile stress and principal compressive stress of the rigid fixity structures are calculated. According to the results of the above analysis, the stress distri- bution of pylon--pier--beam rigid joint is indicated and the corresponding optimization scheme is put for- ward, which provides scientific and theoretical basis for the design and construction.

关 键 词：矮塔斜拉桥 塔墩梁固结 有限元模型 应力分析 

分 类 号：U448.41[建筑科学—桥梁与隧道工程]