【摘要】 对上海地区既有铁路桥梁基础沉降情况进行实地调查和实测，并根据常规计算方法进行沉降计算。理论计算和实测均表明，长桩基础的桥基沉降量很小。据此，讨论了沪宁高速铁路桥梁的合理结构体系，分析了连续梁桥和简支梁桥的结构性能和动力性能的优缺点。更多还原

【Abstract】 The foundation settlement of the railway bridge in Shanghai area is dealed with. Both worksite investigation and calculation with general method are adopted in reasearch. The results show the foundation settlement of brigdes is very limited if long piles are used. According to the conclusion, the reasonable bridge structure system in Shanghai-Nanjing high speed railway is discussed. Dynamics and structure behaviours of both the continuous bridge and the simple bridge are analysed.更多还原