摘要
以南宁吴圩机场第二高速公路K8+720^+960左侧边坡锚杆(索)格梁支护工程为例,基于midas GTS NX软件建立该边坡的三维地质模型,对边坡开挖与支护进行了模拟。计算中采用摩尔-库仑弹塑性模型,编制程序实现锚杆与格梁间的链接,通过数值模拟与实测数据对比,详细分析了该边坡开挖沉降规律、边坡周围岩体的水平位移特征、边坡剪应变特征及塑性区分布特征,验证了此次三维数值分析结果的合理性。
Taking the anchor bolt （cable） lattice beam supporting along the left bank slope in K8 ＋ 720 ＋960 section of the second highway for Nanning Wuxu Airport as an example, 3D geological model of this slope was established with midas GTS NX software to simulate the slope excavation and support, during which Moore-Coulomb elastic-plastic model was used, and the link between the anchor bolt and lattice beam was implemented by programming. Next, through the comparison between numerical simulation and field measurements, the settlement rules in slope excavation, the characteristics of horizontal rock displacement surrounded, the characteristics of shear strain of slope and the features of plastic zone distribution, were analyzed in details, thereby, the rationality of the result from the 3D numerical analysis herein was verified.
出处
《路基工程》
2018年第1期52-55,共4页
Subgrade Engineering
关键词
边坡开挖
锚杆(索)格梁支护
数值模拟
沉降变形
剪应变
塑性区
slope excavation
anchor bolt （cable） lattice beam supporting
numerical sumulation
settlementdetormation
shear strain
plastic zone
