To analyze the secondary dead load ' s effect and law on the continuous girder bridge's deformation, taking( 60 + 100+60 ) m continuous girder in Shanghai-Hangzhou High-speed Railway as an example, and modeling by BSAS, the deformation values of the continuous girder bridge were obtained by calculation under different conditions such as the calculation ages, secondary dead load values, times of secondary dead load over the bridge, times of construction, and construction sequences. Also, the values of girder's temperature deformation before and after secondary dead load over the bridge were obtained by calculation. Furthermore, the laws about deformation varies with the change of the time and the change of secondary dead load parameter were analyzed in this paper, and it can provide reference to deformation control in design and construction of continuous box girder bridges in the future.%为了分析高速铁路二期恒载对连续箱梁变形的影响及规律,以沪杭高速铁路(60+100+60)m连续箱梁为例,利用BSAS建模,通过计算得出连续箱梁合龙后在不同的计算龄期、二恒取值、二恒上桥时间、施工时间及施工顺序下连续箱梁变形值,以及二恒上桥前后梁体温度变形值,并分析其随时间及二恒参数变化的规律,为连续箱梁设计与施工中的变形控制提供借鉴.
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