基于拉拔实验的锚索可靠性分析

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摘  要：预应力锚索普遍应用于基坑支护工程中，而锚索施工质量的可靠性对于基坑工程安全有重要意义。因此，该文基于现场锚索拉拔实验结果，分析与评价该锚索是否达到设计要求，同时利用MIDAS有限元软件建立锚索在基坑开挖结束锚索轴向应力与位移变化特征的数值模型，综合评价该基坑锚索的可靠性。

关键词：基坑支护；锚索；拉拔实验；数值模拟；可靠性

中图分类号：TU457      文献标志码：A          文章编号：2095-2945（2023）20-0063-04

Abstract： Prestressed anchor cable is widely used in foundation pit support engineering， and the reliability of anchor cable construction quality is of great significance to the safety of foundation pit engineering. Therefore， based on the experimental results of on-site anchor cable drawing， this paper analyzes and evaluates whether the anchor cable meets the design requirements， and establishes the numerical model of the axial stress and displacement of anchor cable at the end of foundation pit excavation by using MIDAS finite element software to comprehensively evaluate the reliability of the anchor cable in the foundation pit.

Keywords： foundation pit support; anchor cable; pull-out test; numerical simulation; reliability

锚索能够提供主动抗力，利用钢绞线或钢筋将载荷传至深部土层，目前被广泛运用于基坑支护，边坡支护等工程中[1-3]。（剩余3375字）