高墩桥横断面在复杂工况下的力学特性

doi:10.13438/j.cnki.jdzk.2022.06.007

吉首大学学报（自然科学版） ›› 2022, Vol. 43 ›› Issue (6): 32-37.DOI: 10.13438/j.cnki.jdzk.2022.06.007

高墩桥横断面在复杂工况下的力学特性

王建省，张钊巍，刘戈，张子恒，于志涵

（北方工业大学土木工程学院，北京 100144）

出版日期:2022-11-25 发布日期:2023-01-10

Mechanical Properties of Cross-Sections of High-Pier Bridges in Complex Working Conditions

WANG Jianxing,ZHANG Zhaowei,LIU Ge,ZHANG Ziheng,YU Zhihan

（College of Civil Engineering,North China University of Technology,Beijing 100144,China）

Online:2022-11-25 Published:2023-01-10
About author:WANG Jianxing (1964-),male,was born in Beijing City,professor;research areas are civil engineering,ancient building structure,road and bridge structure.
Supported by:
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)

摘要/Abstract

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.

关键词： 高墩桥, 力学特性, 预应力混凝土, 数值分析

Abstract: 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.

Key words: high-pier bridge；mechanical properties；prestressed concrete, numerical analysis

王建省, 张钊巍, 刘戈, 张子恒, 于志涵. 高墩桥横断面在复杂工况下的力学特性[J]. 吉首大学学报（自然科学版）, 2022, 43(6): 32-37.

WANG Jianxing, ZHANG Zhaowei, LIU Ge, ZHANG Ziheng, YU Zhihan. Mechanical Properties of Cross-Sections of High-Pier Bridges in Complex Working Conditions[J]. Journal of Jishou University(Natural Sciences Edition), 2022, 43(6): 32-37.

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高墩桥横断面在复杂工况下的力学特性

Mechanical Properties of Cross-Sections of High-Pier Bridges in Complex Working Conditions

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