桥梁主跨静载试验对主塔的受力影响探讨

Discussion on the Influence of Static Load Test of Main Span of Bridge on the Stress of Main Tower

重庆城区主要地貌为小丘陵,嘉陵江和长江在市区穿梭,形成以渝中半岛为中心,向周边逐步辐射发展的城区格局。重庆轨道交通跨江建桥为轨道交通主要线路结构形式之一。其中,轨道交通环线高家花园轨道专用桥为其中典型代表。根据国家相关规定要求,列车通车运营前需对桥身做相应的成桥静载试验分析,明确列车在不同工况对桥梁及主塔的应力影响,以方便运营期间的维护。

The main landform of chongqing urban area is small hills. The jialing river and the yangtze river shuttle through the urban area, forming an urban pattern centering on the yuzhong peninsula as the center and gradually radiating to the surrounding area. Chongqing rail transit cross-river bridge is one of the main structural forms of rail transit. Gaojia garden track special bridge of rail transit loop line is a typical representative. According to the relevant regulations of the state, before the train is put into operation, it is necessary to conduct the corresponding static load test on the bridge body to clarify the impact of the train on the bridge and the main tower under different working conditions, so as to facilitate the maintenance during operation.