旧桥原址拓宽改造承载力验算应用研究

APPLICATION RESEARCH ON BEARING CAPACITY CHECKING CALCULATION OF OLD BRIDGE IN.SITU WIDENING RECONSTRUCTION

近年来,我国公路网建设不断发展完善,区域联系在一定程度上显得越来越密切,交通量也显著增加,原有道路规划已不能完全满足当前交通量的需求。因此,桥梁旧桥原址拓宽改造工程不断涌现,在一定程度上缓解了交通流拥挤的问题。针对旧桥原址拓宽改造工程项目中,在实桥上进行试验梁加载承载力验算,将原桥旧桥边梁用于桥梁改造后外边梁使用,判断实际承载力能否满足当前设计、交通荷载的要求。

Summary,in recent years,the construction of highway network in our country has been developing and improving,the regional connection is becoming more and more close to some extent,and the traffic volume is also increasing significantly.Therefore,the old bridge in-situ widening and reconstruction projects continue to emerge.To some extent,the problem of traffic congestion has been alleviated.This paper is aimed at the old bridge in-situ widening and transformation project.The load bearing capacity of the test beam is checked and calculated on the real bridge.The old bridge side beam of the original bridge is used as the external beam after the bridge reconstruction.To judge whether the actual bearing capacity can meet the requirements of current design and traffic load.