亚健康公路混凝土梁式桥的限载方法研究  

Research on the Load Limit Method for Sub-health Highway Concrete Beam Bridge

作　　者：刘爱荣[1] 张俊平[1] 禹奇才[1] 吴刚[2] 

机构地区：[1]广州大学土木工程学院,广东广州510006 [2]中铁四院集团广州设计院有限公司,广东广州510080

出　　处：《中山大学学报（自然科学版）》2009年第5期42-46,共5页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金资助项目(50878059);广东省自然科学基金资助项目(7001897)

摘　　要：为合理适度地利用亚健康公路梁式桥的通行能力,引入了亚健康公路梁式桥的使用承载能力的概念,基于工程可靠度的分析方法,结合实际现役亚健康公路梁式桥的外观检查、荷载试验及有限元分析结果,以混凝土梁式桥的裂缝宽度作为广义抗力,综合考虑了运营荷载、钢筋锈蚀等随机因素,探讨了亚健康公路混凝土桥梁使用承载能力的可靠度分析方法,结合工程实例提出了亚健康桥梁的限载方法,为现役亚健康公路桥梁的科学限载及合理使用提供了理论依据。In order to make use of the load-carrying capacity reasonably and moderately, the concept of serviceability bearing capacity is introduced in this paper. Based on the reliability analysis method, combing the result of appearance investment of existing highway sub-health bridge with load test and FE analysis, further, consider random factors such as carrying load and corrosion of reinforcement, take the crack width of concrete beam as generalized resistance force, the reliability analysis method of the serviceability capacity of sub-health highway concrete beam bridge is discussed, and the corresponding vehicular load limit method is put forward. The research result of this paper can be used to provide the academic reference for reasonable and scientific usage of sub-health highway bridges.

关 键 词：亚健康 混凝土梁式桥 使用承载能力 限载 

分 类 号：U445.7[建筑科学—桥梁与隧道工程] TU375[交通运输工程—道路与铁道工程]