摘要
以洛河特大桥实际工程为背景,利用Midas Civil软件建立了高墩桥在设计荷载作用下的模型,并分析了2种类型横断面高墩连续钢混构桥在不同荷载组合下的力学特性.经对比,在工况1,3中,A型横断面结构承载能力较B型有所提升,且A型横断面轴向应力最大值在1,3工况中较B型分别减少了28.54%,27.88%;在工况3中,A和B型高墩桥挠度最大值分别为3.953,3.643 mm,A型桥梁挠度较B型减少了7.84%,A型高墩桥结构刚度提高,结构变形降低.在各类工况中,高墩桥应力均满足强度要求.
Based on the actual project of Luohe Bridge,the Midas Civil software was used to establish a model of the high-pier bridge under the design load,and the mechanical properties of the two types of cross-sectional high-pier continuous steel-concrete frame bridge were analyzed under different load combinations.In working conditions 1 and 3,the bearing capacity of type A cross-section is higher than that of type B structure,and the maximum axial stress is reduced by 28.54%and 27.88%respectively.In working condition 3,the maximum deflections of A-type and B-type high pier bridges are 3.953 mm and 3.643 mm respectively.The deflection of an A-type bridge is 7.84%lower than that of a B-type bridge.The structural stiffness of A-type high pier bridge is improved and the structural deformation is reduced.In all kinds of working conditions,the stress of a high pier bridge meets the strength requirements.
作者
王建省
张钊巍
刘戈
张子恒
于志涵
WANG Jianxing;ZHANG Zhaowei;LIU Ge;ZHANG Ziheng;YU Zhihan(College of Civil Engineering,North China University of Technology,Beijing 100144,China)
出处
《吉首大学学报（自然科学版）》
CAS
2022年第6期32-37,共6页
Journal of Jishou University(Natural Sciences Edition)
基金
National Natural Science Foundation of China(11572001,51478004)
Education and Teaching Reform Project of North China University of Technology(2022XN009/026)
2022 Beijing College Students Innovation and Entrepreneurship Project(108051360022XN388)。
关键词
高墩桥
力学特性
预应力混凝土
数值分析
high-pier bridge
mechanical properties
prestressed concrete
numerical analysis
