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挂篮作为公路、铁路大跨连续刚构和连续梁桥的活动造梁台车,在上桥投入造梁前必须进行模拟加载试验,对其台车结构的强度、刚度及安全度进行测试与评价。常规的桥上、地面所用的砂袋堆载与千斤顶持荷的加载试验方法,其主要特点存在操作复杂、安全度低、费工费时等。浦南高速公路五里亭1#大桥采用在挂篮加工场内对挂篮分单元构件进行模拟加载试验,操作简单、不占用桥梁施工直线工期、不增加成本,为目前一种新的挂篮加载试验方法,在技术上有所创新。
As a movable girder trolley with long-span continuous rigid frame and continuous girder bridge of highway and railway, the hanging basket must be simulated and loaded before the girder is put into the upper girder to test the strength, rigidity and safety of the trolley structure. Evaluation. Conventional bridge, the ground sand bag used for loading and jack load test method, the main features of the existence of complex operation, low safety, labor-intensive and time-consuming. Pudong Expressway Wuliting 1 # Bridge in the hanging basket processing plant on the basket sub-unit load simulation test, simple operation, does not take the bridge construction straight-line duration, without increasing the cost of a new basket Loading test methods, some innovation in technology.