铝合金桁架天桥荷载试验分析

Analysis on Load Testing on Aluminum Alloy Pedestrian Overcrossing Bridge

西单商业街新建2号天桥为铝合金桁架结构形式,横跨西单北大街,人员通行量比较大,为保证人行天桥今后的安全使用,需要对该人行天桥进行荷载试验,来全面检验铝合金桥梁的设计、施工质量和承载能力。并且该天桥属于新材料、新工艺,迄今国内还没有关于铝合金桥梁的施工及验收规范,同时也缺乏相应的荷载试验规范,因此本次荷载试验及性能分析能够对相关的铝合金结构工程和类似的桥梁工程起到积极的借鉴意义。

The 2nd pedestrian bridge, overerossing over the north Xidan road, is a truss bridge of aluminum alloy bearing huge flow of pedestrian. For safety it is necessary to verify the load-carrying capacity of the new bridge by the loading test, as well as to check the construction quality. Since there are no code or specification for construction and test of aluminum alloy bridge, the loading test of the bridge may offer the useful information for the similar bridge and the other project of aluminum alloy.