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造成桥台变位的重要的因素就是台后地基发生变形,因此,研究台后过渡段地基的变形,对于深入研究桥台变位问题具有非常重要的意义。基于弹性理论,推导了断面形式为任意的路基荷载作用,过渡段地基和其邻近的对地基的内部的任何一点附件应力造成影响的计算公式,另外,从铁路标准路基断面角度,探讨了推导公式的可行性,探讨了路桥过渡段的地基附加应力横向的变化规律以及纵向的变化规律,阐述了过渡段路基填筑影响到到既有的邻近的建筑物进行了阐述。并且,与数值模拟技术相结合,基于标准铁路路基断面的荷载作用,比对路桥交界处地基附加应力,从而验证了路桥交界地基附加应力的修正计算公式具有可行性。对于计算过渡段以及邻近的地基附加应力提供依据。
The important factor that causes the abutment displacement is the deformation of foundation. So it is very important to study the deformation of abutment in the transitional section of abutment. Based on the elastic theory, the formulas for calculating the influence of arbitrary subgrade loads, the influence of the stress on the appendages of the transitional foundation and its adjacent interior to the foundation are deduced. In addition, the formulas of the derivation are discussed from the point of view of railway standard subgrade. The feasibility of horizontal and vertical changes of the additional stress at the transitional section of the road and bridge was discussed. The influence of the embankment in the transitional section on the adjacent buildings was also discussed. In addition, combined with numerical simulation technology, based on the load of standard railway subgrade section, compared with the additional stress at the junction of road and bridge, the correction formula of additional stress at the interface of road and bridge is verified to be feasible. Provide basis for calculating the additional stress of the transition section and the adjacent foundation.