【摘要】 采用振型分解反应谱法,分析了不同上、下游坡度的某重力坝在8度地震设计烈度下的地震响应,得到了地震作用下大坝不同坡度顺流向和竖向的最大位移响应、坝踵最大拉应力响应和坝址最大压应力响应。通过对比分析,得到地震作用下上、下游坡率变化对重力坝抗震性能的影响。更多还原

【Abstract】 The mode-decomposition response spectrum method is used to analyze the seismic responses of gravity dam with different upstream and downstream surface slopes and under 8-degree design seismic intensity.The maximum displacements along the river direction and the vertical direction,the maximum tensile stresses at dam heel and the maximum compressive stresses at dam site in different slopes of upstream and downstream surfaces are obtained.The impacts of upstream and downstream surface slopes on seismic performance of gravity dam are understood by comparing the calculation results.更多还原