根据铁路简支桥梁实体桥墩的原型振动试验结果及其分析,发现梁在纵向对墩有相当大的约束作用,而在横向对墩的约束作用很小。针对这两种不同情况,分别提出了计算纵、横两个方向自振频率的简化图式以及考虑梁的约束作用后计算桥墩纵向地震力的简便方法。 According to the prototype vibration test results of a simple pier bridge pier, the results show that the beam has considerable restraining effect on the pier in the longitudinal direction and the lateral restraint on the pier is very small. For these two different situations, a simplified scheme for calculating the natural frequency in both vertical and horizontal directions and a simple method for calculating the longitudinal seismic force of the pier after considering the constraint effect of the beam are proposed.