锚杆在不同复合地层环境下抗拔承载力试验研究  

Experimental study on pull-out bearing capacity of anchor rods in different composite stratum environment

作　　者：廖志辉 Liao Zhihui(China Railway 22nd Bureau Group Railway Engineering Co.,Ltd.,Beijing 100043,China)

机构地区：[1]中铁二十二局集团轨道工程有限公司,北京100043

出　　处：《山西建筑》2025年第5期65-70,共6页Shanxi Architecture

基　　金：国家自然科学基金项目:爆炸能量聚消耦合作用定向破岩机理研究(项目编号:52064004)。

摘　　要：锚杆被广泛用于地基加固、基坑支护和边坡治理等工程建设中,但受不同复合地层锚固力计算复杂性的影响,许多工程设计和验算仍停留在经验上。为探究锚杆在不同复合地层环境下的抗拔承载能力变化,首先通过现场试验测定锚杆在黏土、卵石复合地层环境下的极限抗拔承载能力,随后通过数值模拟软件Abaqus反演卵石环境和黏土、卵石复合环境下锚杆锚固机理,获得锚杆在荷载作用下位移场分布图,对锚杆的受力特征、荷载传递规律进行分析和研究。Anchor rods are widely used in engineering construction such as foundation reinforcement,foundation pit support and slope treatment.However,due to the complexity of calculating the anchoring force in different composite strata,many engineering designs and verification calculations still rely on experience.To explore the changes in the uplift bearing capacity of anchor rods under different composite stratum environments,this paper first determines the ultimate uplift bearing capacity of anchor rods in the clay and pebble composite stratum environment through field tests.Subsequently,the anchoring mechanism of anchor rods in the pebble environment and the clay and pebble composite environment is back-analyzed by using the numerical simulation software Abaqus.The displacement field distribution diagrams of anchor rods under load are obtained,and the stress characteristics and load transfer laws of anchor rods are analyzed and studied.

关 键 词：锚杆 锚固技术 复合地层 抗拔承载力 轴向位移 数值模拟 

分 类 号：TU411[建筑科学—岩土工程]