考虑荷载方向效应的软硬相间层状岩体
综合变形模量取值研究

doi:10.16285/j.rsm.2019.1931

岩土力学 ›› 2020, Vol. 41 ›› Issue (9): 3066-3076.doi: 10.16285/j.rsm.2019.1931

考虑荷载方向效应的软硬相间层状岩体综合变形模量取值研究

周洪福^{1, 2}，刘彬³

1. 中国地质调查局成都地质调查中心，四川成都 610081；2. 山东科技大学地球科学与工程学院，山东青岛 266590； 3. 四川省地质调查院，四川成都 610081

收稿日期:2019-11-13 修回日期:2020-04-22 出版日期:2020-09-11 发布日期:2020-10-21
作者简介:周洪福，男，1980年生，博士，教授级高级工程师，硕士研究生导师，主要从事工程地质与地质灾害调查研究工作。
基金资助:
第二次青藏高原综合科学考察研究资助（No.2019QZKK0904）；四川省重点研发项目（No.2020YFS0296）；中国地质调查局项目（No.20160272，No.20190505）。

Parameter research for hard and soft layered rock mass of the integrated deformation modulus under practice building load

ZHOU Hong-fu^{1, 2}, LIU Bin³

1. Chengdu Center, China Geological Survey, Chengdu, Sichuan 610081, China; 2. College of Earth Science and Engineering, Shandong University of Science and Technology, Qingdao, Shandong 266590, China; 3. Sichuan Geological Survey, Chengdu, Sichuan 610081, China

Received:2019-11-13 Revised:2020-04-22 Online:2020-09-11 Published:2020-10-21
Supported by:
This work was supported by the Second Tibetan Plateau Scientific Expedition and Research Program(STEP) (2019QZKK0904) and Sichuan Science and Technology Program (2020YFS0296) and China Geological Survey Projects(20160272, 20190505).

摘要/Abstract

摘要： 基于整体受力特征，提出用综合变形模量来表征多层层状岩体的整体变形效应。通过工程实例，建立体现各项异性特性的软硬相间层状岩体综合变形模量理论模型。采用弹性力学分别推求受力方向平行、垂直以及与层面呈任意角度情况下多层层状岩体综合变形模量理论解，并检验理论解一致性。推导受力方向平行层面的综合泊松比理论解和受垂直层面剪应力作用的综合剪切模量理论解。室内分别建立层面倾角为0o、30o、60o、90o的软硬相间层状岩体地质模型，试验获得其综合变形模量。对比分析试验值和理论计算值，两者差别在4.20%～8.77%之间，验证理论解的正确性。从理论分析和试验角度，研究工程荷载方向效应对层状岩体变形特性的影响，丰富完善现有层状岩体力学参数研究理论和技术方法。

关键词: 层状岩体, 荷载方向效应, 理论模型, 综合变形模量

Abstract: Based on the overall loading characteristics, this study was to propose an integrated deformation modulus for representing the integrated loading and deformation effect of the layered rock mass. The analysis of engineering cases was conducted to establish a theoretical model, which reflected the anisotropic characteristics of the integrated deformation modulus of the hard and soft layered rock mass. The theoretical solutions of integrated deformation modulus of hard and soft layered rock mass were separately deduced by using the plastic mechanics under the parallel, vertical and arbitrary directions of the stress to the bedding planes. The consistency of the theoretical solutions was also verified. We deduced the theoretical description of the integrated Poisson's ratio of the parallel direction of stress to bedding planes and the integrated shear modulus of the vertical direction of shear stress to bedding planes. The integrated deformation modulus was obtained by the geological model testing the hard and soft layered rock mass of the dip angles at 0o, 30o, 60o and 90o. The differences in the results from the laboratory test and the integrated deformation modulus were from 4.20 to 8.77%; therefore, the theoretical equation achieved great effects. This research studied the influence of engineering load direction on the deformation properties of layered rock mass by using theoretical analysis and laboratory tests, and improved the theory and technical methods for studying the mechanical parameters of the existing layered rock mass.

Key words: layered rock mass, practice building load, theoretical model, integrated deformation modulus

中图分类号:

TU452

周洪福, 刘彬, . 考虑荷载方向效应的软硬相间层状岩体综合变形模量取值研究[J]. 岩土力学, 2020, 41(9): 3066-3076.

ZHOU Hong-fu, LIU Bin, . Parameter research for hard and soft layered rock mass of the integrated deformation modulus under practice building load[J]. Rock and Soil Mechanics, 2020, 41(9): 3066-3076.

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考虑荷载方向效应的软硬相间层状岩体综合变形模量取值研究

Parameter research for hard and soft layered rock mass of the integrated deformation modulus under practice building load

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考虑荷载方向效应的软硬相间层状岩体 综合变形模量取值研究

Parameter research for hard and soft layered rock mass of the integrated deformation modulus under practice building load

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考虑荷载方向效应的软硬相间层状岩体综合变形模量取值研究