空腹式无铰拱桥开裂荷载计算方法研究  

Research on Cracking Load Computing Method for Open-spandrel Hingeless Arch Bridges

作　　者：胡常福[1,2] 李丽[2] 王锦燕[3] 朱江桃[2] 陆小雨[2] 

机构地区：[1]中南大学土木工程学院,湖南长沙410075 [2]华东交通大学土木建筑学院,江西南昌330013 [3]索尔福德大学计算科学与工程学院

出　　处：《华东交通大学学报》2012年第4期5-11,共7页Journal of East China Jiaotong University

基　　金：国家自然科学基金资助项目(51002050);江西省教育厅资助项目(GJJ12325);铁路环境振动与噪声教育部工程研究中心资助

摘　　要：开裂是混凝土及圬工拱桥使用过程中的常见现象,是其损伤开始的标志。鉴于空腹式无铰拱桥开裂荷载研究不充分的现状,在总结拱桥破坏规律的基础上,提出对称荷载破坏、偏载破坏两种基本破坏型式,使用悬索线拱桥理论推导了其开裂荷载的实用表达式,为实际拱桥状态的快速评定提供理论依据。Cracking was a normal phenomenon in concrete and masonry arch bridge, which was a symbol of damage started. Because of the insufficient research work on computing method of open-spandrel hingeless arch bridge cracking load, a practical method for this type arch bridge was proposed in this paper. Based on failure law of higeless arch bridge, the two failure patterns （symmetric failure pattern, non-symmetric failure pattern） were proposed, and a practical method was deduced by using catenary arch bridge theory, which can be used in suitable arch bridge assessment.

关 键 词：开裂荷载 破坏型式 悬索线理论 

分 类 号：U445[建筑科学—桥梁与隧道工程]