摘要
根据广东省龙川至怀集公路某边坡滑坡设计及滑坡现状,通过现场调查及地质勘察对边坡进行分析,表明造成滑坡的直接原因是短时强降雨导致全风化层强度降低,诱发因素是放坡开挖造成坡脚剪出口贯穿;通过对现场深部位移监测数据及对滑坡周界的分析,确定滑坡主滑动面倾角为17°,潜在滑动面倾角为24°,据此提出了竖向钢花管群桩+斜向预应力钢锚管框架梁加固治理措施。对加固方案进行模拟分析,结果表明加固效果良好。
According to the design and current situation of a slope landslide on Longchuan-Huaiji highway in Guangdong Province,the slope was analyzed through field investigation and geological investigation.The results show that the direct cause of the landslide is the reduction of the weathered layer strength caused by short-term heavy rainfall,and the inducing factor is the penetration of the shear outlet at the foot of the slope due to the slope excavation.Based on the analysis of monitoring data of field deep displacement and the landslide perimeter,the inclination of main sliding surface of landslide is 17°and that of potential sliding surface is 24°.The reinforcement treatment measures of the vertical steel flower pipe group piles+diagonal prestressed steel anchor pipe frame beam were proposed.At the same time,the reinforcement scheme was simulated and the results show that the reinforcement effect is good.
作者
陈记
袁坤
张玉芳
CHEN Ji;YUAN Kun;ZHANG Yufang(Guangdong Nanyue Transportation Investment Construction Co.Ltd.,Guangzhou 510101,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)
出处
《铁道建筑》
北大核心
2020年第10期103-106,共4页
Railway Engineering
关键词
公路边坡
滑坡机理
治理效果
模拟分析
钢花管群桩
斜向预应力钢锚管框架梁
highway slope
landslide mechanism
treatment effect
numerical simulation
steel flower pipe group piles
digonal prestreesed steel anchor pipe frame beam
