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基于可靠度分析的锚杆抗拔安全系数取值标准研究

王玉杰, 徐佳成, 汪小刚, 曾庆义

王玉杰, 徐佳成, 汪小刚, 曾庆义. 基于可靠度分析的锚杆抗拔安全系数取值标准研究[J]. 岩土工程学报, 2012, 34(2): 303-308.
引用本文: 王玉杰, 徐佳成, 汪小刚, 曾庆义. 基于可靠度分析的锚杆抗拔安全系数取值标准研究[J]. 岩土工程学报, 2012, 34(2): 303-308.
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WANG Yu-jie, XU Jia-cheng, WANG Xiao-gang, ZENG Qing-yi. Criteria for determining factor of safety of anchor against pull-out by using reliability analysis[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(2): 303-308.
Citation: WANG Yu-jie, XU Jia-cheng, WANG Xiao-gang, ZENG Qing-yi. Criteria for determining factor of safety of anchor against pull-out by using reliability analysis[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(2): 303-308.
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基于可靠度分析的锚杆抗拔安全系数取值标准研究  English Version

  • 1. 中国水利水电科学研究院流域水循环模拟与调控重点实验室，北京 100048; 2. 深圳钜联锚杆技术有限公司，广东 深圳 518034

基金项目: “十一五”国家科技支撑计划专题项目（ 2008BAB29B01-5 ）； 水利部工益性行业专项经费项目（ 200801005 ）； 973 项目（ 2011CB013502 ）
详细信息
    作者简介:

    王玉杰 (1974 – ) ，男，博士，教授级高工，从事边坡稳定、岩土工程风险分析等方面的科研与咨询工作。

  • 中图分类号: TU472

Criteria for determining factor of safety of anchor against pull-out by using reliability analysis

  • 1. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100048, China; 2. Shenzhen Julian Anchor Technology Co., Ltd., Shenzhen 518034, China

摘要

    摘要
  • 摘要: 现行规范中关于锚杆抗拔安全设计标准，通常是从锚杆杆体的抗拉强度、注浆体与杆体的黏结强度以及注浆体与周围岩土体的黏结强度这 3 方面来定义抗拔安全系数，并建议采用统一的取值标准。实际上由于力学机理、材料性质等方面的不同，这 3 种定义下的安全系数取值标准应有所不同。基于这一背景，应用可靠度分析理论，探讨锚杆抗拔在同一可靠度（失效概率）条件下，这 3 种定义的安全系数的差别，并为相关规程的修订工作中的锚杆抗拔安全系数取值标准的确定提供科学依据。
    Abstract: In the existing specifications and codes, the factor of safety of anchor against pull-out is generally defined by considering tensile strength of steel bar/strand, bond strength of grout and the steel bar/strand, and bond strength of grout and surrounding rock/soil. It results in three different types of factors of safety, which are being applied in practice. The current China ' s specifications and codes suggest the same allowable value for the above three different types of factors of safety. Actually, there is quite difference among them due to different pull-out failure mechanisms of tendon. In view of this limitation, the difference among them is studied and discussed under the same reliability (or failure probability) by using the reliability analysis, and the criteria for determining the factor of safety of anchor against pull-out are proposed.
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    • 参考文献(16)
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出版历程
  • 收稿日期:  2011-01-09
  • 发布日期:  2012-02-19

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