Based on this study the following conclusions are drawn : the responses of cable - stayed bridge under seismic excitations with spatial variations differ from those under uniform seismic excitations up to 30 % ; the responses obtained by considering travelling effect as well as incoherence effect are close to those obtained by only considering travelling effect ; travelling effect has more significant effect on the seismic responses of cable - stayed bridge than incoherence effect ; if r . m . s . ( root - mean - square ) of random seismic ground motions are equal , seismic responses are considerably greater for the case of soft soil than for the cases of firm soil or medium soil 研究结果表明：与一致地震激励相比，地震动的空间变化特性可以使斜拉桥的地震响应改变30 % ；同时考虑行波效应、部分相干效应时的地震响应接近于仅考虑行波效应时的地震响应；行波效应对斜拉桥地震响应的影响明显大于部分相干效应的影响；在加速度均方根相同的随机地震作用下，斜拉桥在软场地条件下的地震响应明显大于在硬场地条件下的响应，中等场地条件下的地震响应介于两者之间。
The ultimate carrying capacity , fracture process and stress - strain relationship on rock generic material are studied with dissipation structure theory in this paper , which shows the essence of mechanical characteristics on rock generic material can be studied deeply from the point of view of system and energy 研究结果表明岩石类材料变形系统具有耗散结构的特性，岩石受力产生变形是非线性动力学过程，即系统内部各要素之间发生协调和相干效应，岩石承载力（强度）是外界做功功率和岩石自身耗散能率达到平衡的外在力学表现。
