含软弱夹层边坡开挖与支护数值模拟  

Numerical simulation of excavation and support of slope with weak intercalation

作　　者：贠永峰[1] 方腾飞 郭光玲[2] YUN Yong-feng;FANG Teng-fei;GUO Guang-ling(School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi'an 710054, China;School of Civil Engineering and Architecture, Shaanxi University of Technology,Hanzhong 723000, China)

机构地区：[1]西安科技大学建筑与土木工程学院,陕西西安710054 [2]陕西理工大学土木工程与建筑学院,陕西汉中723000

出　　处：《陕西理工大学学报（自然科学版）》2018年第6期31-35,共5页Journal of Shaanxi University of Technology:Natural Science Edition

摘　　要：为了研究软弱夹层对边坡开挖的影响,以某公路边坡工程为背景,运用ADINA大型有限元计算软件建立二维力学分析模型,对其开挖与支护过程进行数值模拟分析,对比分析了只开挖不支护(工况一)和边开挖边支护(工况二)两种工况。计算结果表明:相比工况二,工况一开挖时软弱夹层处剪应力较大,坡面整体Z向位移较大。因此,该软弱夹层为边坡开挖时的潜在滑动面,通过锚杆锚固措施可减小开挖风险,保证边坡开挖的稳定性。In order to study the influence of weak interlayer on slope excavation,a large-scale finite element calculation software of ADINA was used to establish a two-dimensional mechanical analysis model with the background of a highway slope engineering.The excavation and support process was numerically simulated and compared.1)Only digging without support;2)Excavation and side support two working conditions.The calculation results show that compared with working condition2,the shear stress at the weak interlayer at the time of excavation is larger,and the overall Z direction displacement of the slope is larger.Therefore,the potential of the weak interlayer for the excavation of the slope,the bolt anchorage measures can reduce the risk of excavation and ensure the stability of the slope excavation.

关 键 词：软弱夹层 数值模拟 开挖 位移 锚固 

分 类 号：TU753.8[建筑科学—建筑技术科学]