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西单商业街新建1号天桥为铝合金桁架结构形式,横跨西单北大街,紧邻西长安街,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,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。
Xidan Commercial Street, the new No. 1 flyover for the aluminum truss structure form, across Xidan North Street, close to West Chang’an Avenue, staff traffic is relatively large. In order to ensure the safe use of pedestrian bridges in the future, it is necessary to carry out load tests on the pedestrian bridges and comprehensively test the design, construction quality and carrying capacity of the aluminum alloy bridges. And the flyover belongs to the new material and new technology. Up to now, there is no normative about the construction and acceptance of the aluminum alloy bridge in China and the corresponding normative load test norms. Therefore, this load test and performance analysis can analyze the related aluminum alloy structural engineering and Similar bridge projects play a positive reference.