CAJ | 학술논문

针对公路岩质边坡稳定性分析评价问题,根据能量法原理和塑性极限分析上限定理,建立了岩质边坡平面滑动的屈服机构.在刚塑性假定条件下,视岩质边坡的滑体为刚体,没有内能耗散,视滑面为塑性区,能量耗散主要集中在滑面上,根据能量法可以得到简化后的虚功率方程.综合考虑作用在岩质边坡上的后缘裂缝静水压力、沿滑面扬压力、重力、水平地震惯性力、锚固力等外力,按照强度折减法,推导得出了公路岩质边坡稳定性评价的能量法上限解.通过典型算例,将能量法上限解和刚体极限平衡法稳定系数计算结果进行了对比分析.
침대공로암질변파은정성분석평개문제,근거능량법원리화소성겁한분석상한정리,건립료암질변파평면활동적굴복궤구.재강소성가정조건하,시암질변파적활체위강체,몰유내능모산,시활면위소성구,능량모산주요집중재활면상,근거능량법가이득도간화후적허공솔방정.종합고필작용재암질변파상적후연렬봉정수압력、연활면양압력、중력、수평지진관성력、묘고력등외력,안조강도절감법,추도득출료공로암질변파은정성평개적능량법상한해.통과전형산례,장능량법상한해화강체겁한평형법은정계수계산결과진행료대비분석.
Aimed at stability analysis and evaluation for highway rock slope, based on the theory of energy method and the upper bound theorem of plasticity limit analysis, a yield mechanism of planar failure surface for rock slope was established. On the assumption that the sliding mass of rock slope was treated as rigid body without internal energy dissipation while the sliding surface was treated as plastic zone where the energy dissipation mainly generates, the simplified virtual power equation in limit state was obtained by using energy method. With consideration of the hydrostatic pressure in back fissure, uplift pressure along slip surface, self-weight, horizontal seismic inertia force and anchorage force, the upper bound solution of energy method for highway rock slope stability analysis was deduced by means of strength reduction method. Through a typical case study, the computation results between the presented method and rigid body limit equilibrium method was compared.