深埋黏土中锚板抗拔锚固机制研究  

Study on pullout anchoring mechanism of anchor plate in deep clay

作　　者：何佳林 程永辉[1] HE Jialin;CHENG Yonghui(Changjiang River Scientific Research Institute,Wuhan 430010,China)

机构地区：[1]长江科学院水利部重点实验室,湖北武汉430010

出　　处：《水利建设与管理》2023年第12期23-26,共4页Water Conservancy Construction and Management

摘　　要：锚板作为一种常见的抗拔基础结构,具有结构简单、承载性能好等特点,在工程建设中得到了广泛应用。但目前有关锚板抗拔承载机理的研究主要集中于浅埋条件下,有关深埋条件下黏土中锚板抗拔承载机理的分析尚不充分。基于此,开展了室内可视化拉拔模型试验,测试拉拔过程荷载随位移变化规律,记录锚周土体变形破坏发展过程,并由锚周土体变形形态推导出了锚板抗拔承载力的计算公式。研究表明,拉拔过程中,上拔荷载随位移增长先后经历了线性快速增长阶段、增长趋缓阶段以及衰减阶段;在上拔荷载作用下,锚周土体也依次经历了压密阶段、锥形压缩体形成阶段以及破坏后阶段,与荷载变形相对应;试验结果合理可靠,能为工程实际提供借鉴。Anchor plates,as a common type of uplift-resistant foundation structure,are widely used in engineering construction due to their simple design and excellent load-bearing performance.However,current research on the uplift resistance mechanism of anchor plates is mainly focused on shallow burial conditions,and there is limited analysis of the uplift resistance mechanism of anchor plates in deep clay.To address this gap,indoor visualized pull-out model tests were conducted to investigate the load-displacement relationship during the pull-out process.The tests recorded the development of deformation and failure in the surrounding soil and derived a calculation formula for the uplift resistance of anchor plates based on the deformation characteristics of the soil.The study revealed that during the pull-out process,the uplift load experienced stages of rapid linear growth,gradual increase,and decline as displacement increased.The soil surrounding the anchor plate went through stages of densification,formation of a conical compression body,and post-failure behavior corresponding to the load-induced deformation.The experimental results are reasonable and reliable,providing valuable insights for practical engineering applications.

关 键 词：锚板 深埋条件 黏土 抗拔承载力 

分 类 号：TU470[建筑科学—结构工程]