桥梁结构基于拱杆系失效包络图的可视化安全评估

基于失效包络图理论,利用几何思想建立桥梁构件及结构整体失效状态新模型;在直杆系失效包络图理论的基础上,提出了适用于桥梁结构拱杆系的失效包络图及安全评估的方法.以连霍高速公路许沟特大桥为实例,通过对三维及二维工作状态可视包络图的分析,给出了桥梁结构拱杆系的失效接近度、安全余度等安全评估的量化指标.

Safety Assessment of Visualization of Bridges Based on Arch Truss Failure Envelope Theory

Based on the expiration envelope chart theory,used geometry thought establishment bridge member and the structure whole mode of failure new model,and proposed the expiration envelope chart to be suitable arches the trussing in the bridge structure and the method of security evaluation in the straight trussing expiration envelope chart theory’s foundation.This paper took the big bridge of Xugou of the Lianhuo Highway as an example,through to three dimensional and two-dimensional active status visible envelope chart analysis,gave the bridge structure to arch the trussing the expiration proximity,the security redundancy and so on security evaluation quantification target.