摘要
为了解决大跨度桥梁中承载能力不足的问题,利用有限元分析软件Midas civil 2015,对某特大桥的上部结构承载能力进行了验算分析。主要对大跨度桥梁上部结构在使用过程中的不同荷载组合工况下的应力状态和截面强度进行分析,同时,对预应力混凝土受弯构件进行了应力验算,对桥梁整体支座承载能力验算,对箱梁结构挠度和预拱度计算等。研究结果表明,受多种因素的影响上部结构构件可能出现病害或设计不合理,导致承载力储备不足。得出结论,在桥梁运营过程中要加强对主要截面的控制,尽量减小桥梁病害发生。
The carrying capacity of the superstructure of an extraordinary long-span bridge was checked with Midas civil 2015.The stress state and section strength of the superstructure under different load combinations in operation were analyzed.Meanwhile,the stress of the prestressed concrete bending member,the carrying capacity of the total support of the bridge and the structural deflection and the camber of the beam structure were calculated.It was found that many factors might cause the damage or wrong design of the superstructure and resulted in insufficient carrying capacity reserve.Therefore,the control of major sections should be strengthened in the operation of a bridge so as to reduce the occurrence of bridge defects.
作者
祝向群
杨名超
卢晨怡
凌中水
邓乃凡
孙辅皓
ZHU Xiang-qun;YANG Ming-chao;LU Chen-yi;LING Zhong-shui;DENG Nai-fan;SUN Fu-hao(Department of Architectural Engineering,Anqing Vocation and Technical College,Anqing 246003,China;Central and Southern China Municipal Engineering Design and Research Institute Co.Ltd,Wuhan 430010,China;CITIC General Institute of Architecture Design and Research Co.Ltd,Wuhan 430010,China;Jiangsu Dapeng Project Management Consulting Co.Ltd,Xuzhou 221300,China)
出处
《辽东学院学报（自然科学版）》
CAS
2019年第4期287-292,共6页
Journal of Eastern Liaoning University:Natural Science Edition
基金
安徽省高校自然科学重点研究项目(KJ2016A450,KJ2017A787)
安徽省高等职业教育创新发展行动计划(XM-4)
安徽省高校优秀青年人才支持计划项目(gxyq2017214)
安徽省质量工程项目(2016xn2x025)
关键词
桥梁
上部结构
承载力
验算
bridge
superstructure
carrying capacity
checking computation
