论文部分内容阅读
通过仿真分析计算,在不同工况条件下模拟地基沉降,对路桥过渡段刚性楔形搭板与路基的完全弹性支承、部分脱空和完全脱空时的接触状态进行力学分析。分析刚性楔形搭板与路基不同接触状态时的受力状态及其对地基沉降的适应性,提出刚性楔形搭板脱空长度是影响其受力状态的主要因素;刚性楔形搭板桥台端应力集中明显,应做特殊强化设计;地基沉降是影响路基面折角的主要因素;为使轨道刚度和路基变形均匀变化,建议采用工况1的计算参数。
Through the simulation analysis and calculation, the settlement of foundation is simulated under different working conditions, the mechanical analysis of the contact state between the rigid wedges and the embankment at the transitional section of road and bridge is carried out. The force condition of rigid wedge slab and subgrade at different contact states and its adaptability to foundation settlement are analyzed. It is proposed that the length of the rigid wedge slab is the main factor affecting the stress state of the rigid wedge slab; Obviously, special strengthening design should be done. Foundation settlement is the main factor that affects the angle of the roadbed. In order to make the track stiffness and subgrade deformation change uniformly, it is recommended to use the calculation parameters of the condition 1.