斜腿刚构桥受力分析及质量控制要点  

Stress Analysis and Quality Control Points of Inclined Leg Rigid Frame Bridge

作　　者：姚健 YAO Jian(China Railway 22nd Bureau Group Second Engineering Co.,Ltd.,Beijing 100144,China)

机构地区：[1]中铁二十二局集团第二工程有限公司,北京100144

出　　处：《价值工程》2025年第11期46-48,共3页Value Engineering

摘　　要：针对斜腿刚构桥结构空间受力复杂的情况,在实际施工过程中,对受力关键部位施工质量要求高。如施工过程中受力分析不准确,质量控制不严格,易在运营后各种荷载作用下出现裂缝损伤问题,缩短桥梁使用寿命,形成长期安全隐患。本文以一典型斜腿刚构桥为工程背景,运用Midas Civil有限元软件建立该桥模型,利用梁格法分析桥梁在不同荷载作用下的力学行为,完成对该桥梁的安全性检算,分析得出最不利荷载部位。针对最不利荷载部位施工质量控制提出合理性建议,所得结论可以为该类型桥梁施工提供参考。In view of the complex spatial stress conditions of the inclined leg rigid frame bridge structure,high construction quality requirements are imposed on key stress-bearing parts during the actual construction process.If the stress analysis is not accurate during construction and the quality control is not strict,cracks and damage issues may occur under various loads after operation,shortening the service life of the bridge and creating long-term safety hazards.This paper establishes the bridge model by using Midas Civil Finite Element Software,analyzes the mechanical behavior of the bridge under different loads by using the grillage method,and completes the safety check of the bridge.The most disadvantageous load position is obtained.This paper puts forward some reasonable suggestions for the construction quality control of the most disadvantageous load position,and the conclusions can provide reference for the construction of this type of bridge.

关 键 词：斜腿刚构桥 最不利荷载 施工质量控制要点 

分 类 号：U448.232[建筑科学—桥梁与隧道工程]