基于内力包络理论桥梁远程健康监测安全评价  

Safety Evaluation of Long-Range Monitoring of Bridge Health Based on Internal Force Envelope Theory

作　　者：刘璐[1] 周建庭[1] 陈晓明 

机构地区：[1]重庆交通大学,重庆400074 [2]丰都县交通勘察设计所,重庆丰都408200

出　　处：《重庆交通大学学报（自然科学版）》2009年第4期673-675,688,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金项目(50608072);重庆市杰出青年基金项目(CSTC;2008BA6038);交通部西部交通建设科技项目(200631822349)

摘　　要：通过安全评价模式、基于桥梁实时监测的抵抗内力图和实时内力图的获取、应用实践等几个方面的阐述,将桥梁设计中使用的内力包络验算方法应用于桥梁远程健康监测系统,提出了一种基于内力包络理论的安全评价方法。与现有方法相比,该方法解决了测点有限、不能反映未测位置及桥梁整体状态的问题,具有更直观、客观的优点,并能较好地克服环境与运营条件的影响,具有良好的应用前景。The safety evaluation model, the resistant internal force diagram and real-time internal force diagram based on the real-time monitoring of a bridge as well as the application are expounded. The internal force envelope method in bridge design is applied to the remote monitoring of bridge health, and a kind of safety evaluation method based on internal force envelope theory is proposed. Comparing with the current method, this method solves the problems that the measuring points are limited and can＇t reflect the state of unmeasured location and the overall bridge. Therefore, this method is advantageous to be more intuitive and more objective, at the same time, it does better in overcoming environmental and operational conditions and has a promising application potential.

关 键 词：内力包络 安全评价 结构抗力 等效节点荷载 

分 类 号：U441.2[建筑科学—桥梁与隧道工程]