Abstract: 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.

Key words: internal force envelope , safety evaluation , structure resistance , equivalent node load ;

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。

关键词: 内力包络, 安全评价, 结构抗力, 等效节点荷载