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  • 全长黏结锚索支护力学传递机理 陈见行,陈宇龙,张村 著 专业科技 文轩网
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    • 作者: 陈见行,陈宇龙,张村著
    • 出版社: 冶金工业出版社
    • 出版时间:2020-10-01 00:00:00
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    商品参数
    • 作者: 陈见行,陈宇龙,张村著
    • 出版社:冶金工业出版社
    • 出版时间:2020-10-01 00:00:00
    • 版次:1
    • 印次:1
    • 印刷时间:2020-10-01
    • 字数:152000
    • 页数:128
    • 开本:16开
    • 装帧:平装
    • ISBN:9787502486266
    • 国别/地区:中国
    • 版权提供:冶金工业出版社

    全长黏结锚索支护力学传递机理

    作  者:陈见行,陈宇龙,张村 著
    定  价:48
    出 版 社:冶金工业出版社
    出版日期:2020年10月01日
    页  数:128
    装  帧:平装
    ISBN:9787502486266
    主编推荐

    内容简介

    全长黏结锚索支护是煤矿和金属矿支护中的一种常见方式。由于锚索具有承载力大、可靠性高等优点,在矿山有着广泛的应用。但全长黏结锚索支护仍然存在失效的问题,常见的失效方式包括锚索与锚固剂接触面的粘结失效等。为了揭示全长黏结锚索支护的力学传递机理,预防锚索支护发生失效,本专著提出采用物理试验、理论分析和数值计算相结合的方法,研究全长黏结锚索在轴向加载条件下的力学传递性能及失效方式,从而为揭示锚索支护的力学传递原理提供了理论依据。

    作者简介

    精彩内容

    目录
    Chapter 1 Introduction
    1.1 Background
    1.2 Research objectives
    1.3 Book outline
    Chapter 2 A new laboratory short encapsulation pull test apparatus design
    2.1 Introduction
    2.2 LSEPT apparatus design
    2.2.1 Components of the test rig
    2.2.2 Test confining medium
    2.2.3 Confinement tube
    2.2.4 Anchor tube
    2.2.5 Bearing plate
    2.2.6 Anti-rotation devices
    2.2.7 Hydraulic control
    2.2.8 Monitoring system
    2.3 Test specimen preparation and installation
    2.3.1 Cementitious confining medium casting and curing
    2.3.2 Cable bolt and anchor tube installation
    2.4 Preliminary tests
    2.4.1 Test with a MW9 cable bolt
    2.4.2 Test with a Superstrand cable bolt
    2.4.3 Influence of borehole roughness
    2.4.4 Influence of pre-confinement of the confining medium
    2.4.5 Further study of cable termination methods
    2.5 Summary
    Chapter 3 Load transfer behaviour of fully grouted cable bolts
    3.1 Introduction
    3.2 Load transfer of modified cable bolts
    3.2.1 Dimensions of MW9 cable bolts
    3.2.2 Bearing plate effect
    3.2.3 Borehole size effect
    3.2.4 Confining medium strength effect
    3.3 Load transfer of plain cable bolts
    3.3.1 Dimensions of Superstrand cable bolts
    3.3.2 Bearing plate effect
    3.3.3 Borehole size effect
    3.3.4 Confining medium strength effect
    3.4 Comparison between two types of cable bolts
    3.4.1 Cable surface geometry effect in the weak confining medium
    3.4.2 Cable surface geometry effect in the strong confining medium
    3.5 Post-failure behaviour
    3.5.1 MW9 cable bolt
    3.5.2 Superstrand cable bolt
    3.6 Summary
    Chapter 4 Analytical modelling of load transfer behaviour of fully grouted cable bolts
    4.1 Introduction
    4.2 Analytical modelling of the fully grouted cable bolts
    4.2.1 Governing equation
    4.2.2 The tri-linear model of the cable/grout interface
    4.2.3 Pull-out stages of cable bolts
    4.3 Validation of the analytical model
    4.3.1 Pull-out tests on plain cable bolts
    4.3.2 Pull-out tests on modified cable bolts
    4.4 Shear stress distribution in the peak load state
    4.5 Interfacial shear stress propagation with pull-out stages
    4.6 Summary
    Chapter 5 Numerical simulation of the axial behaviour of fully grouted cable bolts
    5.1 Introduction
    5.2 Structural element selection
    5.3 Calibration of confining medium material
    5.3.1 Calibration of the weak confining medium material
    5.3.2 Calibration of the strong confining medium material
    5.4 Simulation of the pull-out behaviour of Superstrand cable bolts
    5.4.1 Pulling Superstrand cables from weak medium with normal borehole
    5.4.2 Pulling Superstrand cables from weak medium with larger borehole
    5.4.3 Pulling Superstrand cables from strong medium
    5.5 Simulation of the pull-out behaviour of MW9 cable bolts
    5.5.1 Pulling MW9 cables from weak medium with normal borehole
    5.5.2 Pulling MW9 cables from weak medium with larger borehole
    5.5.3 Pulling MW9 cables from strong medium
    5.6 Summary
    Chapter 6 Conclusions
    References

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