微型钢管抗滑桩的受力特点及其应用  

Stress characteristics and application of micro steel anti-slide piles

作　　者：陈再谦[1] 郭果[1] 郭维祥[1] 刘金阳[1] 

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵阳550081

出　　处：《兰州大学学报（自然科学版）》2017年第1期43-47,共5页Journal of Lanzhou University(Natural Sciences)

摘　　要：结合工程实例,运用数值模拟的方法,对微型钢管抗滑桩的受力特性及支护效果进行研究.结果表明在加固土质边坡中,微型钢管桩受力主要表现为承受坡体侧向土压力,在加固岩质层状边坡中微型钢管桩的受力主要表现为承受坡体下滑的剪力,当微型钢管桩抗剪强度达到屈服强度后,逐渐转为受拉.因此,在加固土质边坡中,由于微型钢管桩截面矩有限,宜设计连系梁并结合锚杆(索)一起使用,以提高其整体抗弯性能;在加固层状岩质边坡中,不但应考虑微型钢管桩的抗剪性能,还应保证其足够的嵌固深度.Combined with engineering examples and using the numerical simulation method,the stress characteristics and the supporting effects of the micro steel tube anti slide piles were studies.The results showd that in a reinforced soil slope a micro steel pipe mainly bore the slope lateral soil pressure;in a reinforced stratified rock slope,it mainly withstood the shear of slope in downward fashion,and when the micro steel pipe shear strength reached the yield strength,the stress situation gradually turned to the tension.In a reinforced soil slope,due to the limited section moment of the micro steel pipe,it should be designed as a coupling beam combining with the anchor（cable） used together,in order to improve the whole bending performance.In a reinforced stratified rock slope what should be considered is not only the shear performance of the micro steel pipe,but also how to guarantee an adequate embedded depth.

关 键 词：微型钢管抗滑桩 边坡支护 抗滑机理 数值模拟 

分 类 号：P642[天文地球—工程地质学]