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以往边坡分析通常假设坡面为平面,在此基础上进行分析。在山区铁路建设中,桥基所处岸坡坡面经常突起呈角型形状,此时普通的平面简化已不能完全真实反映边坡的空间形状和力学性能,此时临界滑动面不仅于岩体结构面、桥基荷载大小及位置有关,主要还受坡面形状影响。基于应力影响系数法对荷载作用下均质岩角型高边坡三维临界滑动面形态及位置进行初步判别,进一步研究各因素变化对临界滑动面分布形态的影响,总结桥基荷载作用下均质岩角型高边坡临界滑动线变化规律,提出桥基荷载作用下均质岩角型高边坡临界滑动面范围确定公式。
Slope analysis in the past usually assumed that the slope plane, based on this analysis. In the construction of mountain railway, the slope of bank slope where the bridge foundation is located often presents a corner shape. At this time, ordinary plane simplification can not fully reflect the spatial shape and mechanical properties of the slope. At this time, the critical slip surface is not only in the rock mass Structural surface, the bridge load size and location, mainly affected by the shape of the slope. Based on the stress influence coefficient method, the shape and position of the three-dimensional critical slip surface of the homogeneous rock slope under load were preliminarily determined. The influence of various factors on the distribution of the critical slip surface was further studied. The variation rule of the critical slip line of high slope is proposed and the formula of the critical slip surface of homogeneous rock angle high slope is proposed.