考虑地震力与静水压力的顺层岩质边坡弯曲破坏分析
发布时间：2018-11-06 16:02
【摘要】：顺层岩质边坡是工程中较为常见的一种边坡类型,而弯曲破坏又是顺层岩质边坡中常见的破坏形式。当边坡上覆岩体具备下滑条件,岩体前缘下滑受阻,造成坡脚附近顺层岩板承受纵向压应力,加上地震力和静水压力的共同作用很容易发生弯曲变形直至弯曲破坏。基于弹塑性板稳定性理论,考虑岩体塑性和边坡长度的影响,并特别考虑地震力和静水压力的影响,建立了弯曲破坏段长度的计算公式和稳定系数指标。将建立的计算公式与现有分析方法进行对比,给出了两者的一致性和差异性。结合渝怀铁路2个工点的具体参数,代入公式并采用MATLAB进行计算,所得结果与现场实际调查情况相一致,并且分析了地震影响系数和岩板塑性参数的不同取值对计算结果的影响,验证了本文方法的可行性。
[Abstract]:Bedding rock slope is a common slope type in engineering, and bending failure is a common failure form in bedding rock slope. When the overlying rock mass of the slope has the condition of sliding and the front edge of the rock mass is blocked, the bedding slab near the foot of the slope is subjected to longitudinal compressive stress, and the joint action of seismic force and hydrostatic pressure is easy to bend and destroy. Based on the theory of elastic-plastic plate stability, considering the influence of rock mass plasticity and slope length, and especially considering the influence of seismic force and hydrostatic pressure, the calculation formula and stability coefficient index of the length of bending failure section are established. The established formulas are compared with the existing analytical methods, and the consistency and difference between them are given. Combined with the specific parameters of the two sites of Yu-Huai railway, the formula was put in and calculated by MATLAB. The results were in agreement with the actual investigation on the spot. The influence of different values of seismic influence coefficient and plastic parameters of rock slab on the calculation results is analyzed, and the feasibility of this method is verified.
【作者单位】： 西南交通大学土木工程学院;
【基金】：国家自然科学基金项目(51178402)资助
【分类号】：TU45
[Abstract]:Bedding rock slope is a common slope type in engineering, and bending failure is a common failure form in bedding rock slope. When the overlying rock mass of the slope has the condition of sliding and the front edge of the rock mass is blocked, the bedding slab near the foot of the slope is subjected to longitudinal compressive stress, and the joint action of seismic force and hydrostatic pressure is easy to bend and destroy. Based on the theory of elastic-plastic plate stability, considering the influence of rock mass plasticity and slope length, and especially considering the influence of seismic force and hydrostatic pressure, the calculation formula and stability coefficient index of the length of bending failure section are established. The established formulas are compared with the existing analytical methods, and the consistency and difference between them are given. Combined with the specific parameters of the two sites of Yu-Huai railway, the formula was put in and calculated by MATLAB. The results were in agreement with the actual investigation on the spot. The influence of different values of seismic influence coefficient and plastic parameters of rock slab on the calculation results is analyzed, and the feasibility of this method is verified.
【作者单位】： 西南交通大学土木工程学院;
【基金】：国家自然科学基金项目(51178402)资助
【分类号】：TU45
【相似文献】
相关期刊论文 前10条
1 赵蕾;;浅谈岩质边坡变形破坏模式[J];山西建筑;2008年25期
2 马毅;王希良;刘振;郭阳阳;;基于模糊因素的岩质边坡地震稳定性多模型组合评价[J];岩土力学;2011年S1期
3 周金顺;俞然刚;倪雨龙;;岩质边坡表层土及植被恢复方法的探讨[J];低温建筑技术;2011年09期
4 汤平;李刚;徐卫军;;水及开挖卸荷对岩质边坡稳定性影响分析[J];岩土力学;2005年S2期
5 肖芬芬;侍倩;;岩质边坡喷混植生护坡技术浅析[J];土工基础;2006年03期
6 刘润;闫s，
本文编号：2314762
本文链接：https://www.wllwen.com/jianzhugongchenglunwen/2314762.html
