基于ABAQUS的混凝土梁桥长期变形研究  

Long-Term Deformation Study of Concrete Beam Bridges based on ABAQUS

作　　者：孙玉浩 金鑫 SUN Yuhao;JIN Xin

机构地区：[1]浙江江南工程管理股份有限公司,浙江杭州310063

出　　处：《浙江建筑》2025年第2期11-15,共5页Zhejiang Construction

摘　　要：基于ABAQUS有限元分析软件对混凝土梁桥变形进行模拟分析,研究其变形特性。通过对不同荷载和环境条件下的梁桥进行模拟研究,深入分析了不同荷载和环境条件下的梁桥变形特性,并重点剖析了混凝土材料的蠕变和收缩对桥梁长期变形的影响。研究结果表明:混凝土梁桥的长期变形主要受到预应力损失、空间效应以及疲劳作用等因素的影响,且预应力损失和考虑空间效应与疲劳作用下预应力钢绞线的松弛是产生裂缝以及长期变形显著的原因。研究结果为延长桥梁使用寿命,提升桥梁运行安全性以及桥梁的设计和维护提供了重要依据。This paper conducts a simulation analysis of the deformation of concrete beam bridges based on the finite element analysis software ABAQUS.The paper studies the deformation characteristics of concrete beam bridges.By simulating the bridges under different load and environmental conditions,the paper deeply explores the deformation characteristics of concrete beam bridges under different load and environmental conditions and focuses on the influence of creep and shrinkage of concrete materials on the long‑term deformation of bridges.The research results show that the long‑term deformation of concrete beam bridges is mainly affected by prestress loss,spatial effects,and fatigue action,and the relaxation of prestressed steel strands due to prestress loss,considering spatial effects,and fatigue action is a significant cause of cracks and local deformation.The research results provide important basis for extending the service life of bridges,enhancing bridge safety,and bridge design and maintenance.

关 键 词：混凝土梁桥 长期变形 预应力损失 

分 类 号：U448.21[建筑科学—桥梁与隧道工程]