基于荷载试验的混凝土加固石拱桥承载力评定  

Bearing capacity evaluation of the concrete-reinforced stone arch bridge based on load test

作　　者：盛焰正 赵海军[1] SHENG Yanzheng;ZHAO Haijun(CCCC Second Highway Consultant Co.Ltd.,Wuhan 430052,China)

机构地区：[1]中交第二公路勘察设计研究院有限公司,湖北武汉430052

出　　处：《四川建筑科学研究》2022年第1期63-69,共7页Sichuan Building Science

摘　　要：石拱桥因其结构造型优美、承载力强及取材方便,在我国旧桥梁中占重要比例。但是,随着交通流剧增及自然环境作用,旧石拱桥承载力、耐久性逐渐无法满足需求,局部加固后仍存在极大的安全问题。所以,对加固后石拱桥承载力进行评定以保证其在使用寿命内的安全运营具有重要作用。本文依托加固后石拱桥的现场技术状况检查和荷载试验,采用Midas/Civil 2015有限元软件建立了主拱圈有限元模型,对该石拱桥的实际承载力进行了评价,验证了其加固效果。研究成果可为类似石拱桥的安全性评估及加固措施提供一定参考。Because of its beautiful structure, strong bearing capacity and convenient materials, the stone arch bridge occupies an important proportion of the old bridges in China. However, with the rapid increase in traffic load and the effect of the natural environment, the bearing capacity and durability of the old stone arch bridge gradually cannot meet the safety demand, and there are still great safety problems after partial reinforcement. Therefore, it is important to evaluate the bearing capacity of the stone arch bridge after reinforcement to ensure its safe operation during its service life. In this paper, based on the on-site technical condition inspection and load test of the reinforced stone arch bridge, the Midas/Civil 2015 finite element software is applied to establish the finite element model of the main arch rings. Combined with the load test results, the actual bearing capacity of the stone arch bridge is evaluated and the reinforcement effect is verified. It can provide certain reference for the safety assessment and reinforcement measures of the similar stone arch bridge.

关 键 词：石拱桥 技术状况 荷载试验 承载力评定 加固效果 

分 类 号：TU363[建筑科学—结构工程] TU997