摘要
目前较多的应急桥采用了"321"钢桥,而"321"钢桥改建非常困难。山区又很难找寻合适的桥址建造新桥梁,拆除重建将会造成道路中断。提出一种可应急使用的快速施工钢-混凝土组合桥梁,应急通车采用工字钢承重,上部铺设预制桥面板,改造后的长期使用桥梁采用工字钢与混凝土板组成的组合结构承重。应急通车施工快,后期可在不对交通造成较大影响的情况下转换成长期使用桥梁。不仅满足了应急条件的要求,保障了交通,也节约了资源。
At present,＂321＂steel bridge is used in construction of emergency bridge,but reconstruction of＂321＂steel bridge is very difficult,and it is hard to find a suitable bridge site to build a new bridge in mountain area. Roads will break off again by demolition and reconstruction of bridge. This paper puts forward rapid construction technology of steel-concrete composite bridge with emergent service. The bearing structure is I-steel for emergency traffic. The prefabricated bridge deck is paved on the top of bearing structure. The composite bearing structure of the bridge with long-term use after transformation is composed of I-steel and concrete slabs. The construction is fast for emergency traffic. The steel-concrete composite bridge can change into the bridge with long-term use in no case of traffic impact in later stage.The construction technology not only meets the requirements of the emergency conditions,ensures smooth traffic flow,but also saves resources.
出处
《施工技术》
CAS
北大核心
2014年第23期76-78,共3页
Construction Technology
