基于有限差分的岩体破裂非连续变形及水力弱化效应表征方法

doi:10.6040/j.issn.1672-3961.0.2022.261

山东大学学报 (工学版) ›› 2023, Vol. 53 ›› Issue (5): 103-111.doi: 10.6040/j.issn.1672-3961.0.2022.261

• 土木工程 • 上一篇

基于有限差分的岩体破裂非连续变形及水力弱化效应表征方法

陈云娟¹,敬艺^2*,贾润枝^3,4,王军¹,杨卓^3,4,罗平利^3,4

1.山东建筑大学建筑结构加固改造与地下空间工程教育部重点实验室, 山东济南 250101;2.山东大学齐鲁交通学院, 山东济南 250061;3.中化学交通建设集团有限公司, 山东济南 250102;4.山东省公路工程技术研究中心有限公司, 山东济南 250102

发布日期:2023-10-19
作者简介:陈云娟(1984— ),女,山东潍坊人,副教授,硕士生导师,博士,主要研究方向为岩土工程、城市地工空间稳定性等方面的研究. E-mail: chenyunjuan@sdjzu.edu.cn. *通信作者简介:敬艺(1995— ),女,山东泰安人,助理研究员,硕士,主要研究方向为地下工程防灾减灾等方向的研究. E-mail:jing1hay@163.com
基金资助:
国家自然科学基金资助项目(42172310);山东省自然科学基金资助项目(ZR2022ME060);山东省青创科技支持计划资助项目(2019KJG015)

Representation of discontinuous deformation and hydraulic weakening effect of rock masses failure based on finite difference method

CHEN Yunjuan¹, JING Yi^2*, JIA Runzhi^3,4, WANG Jun¹, YANG Zhuo^3,4, LUO Pingli^3,4

1. Key Laboratory of Building Structural Retrofitting and Underground Space Engineering(Shandong Jianzhu University), Ministry of Education, Jinan 250101, Shandong, China;
2. School of Qilu Transportation, Shandong University, Jinan 250061, Shandong, China;
3. China National Chemical Communications Construction Group Co., Ltd., Jinan 250102, China;
4. Shandong Highway Engineering Technology Research Center Co., Ltd., Jinan 250102, Shandong, China

Published:2023-10-19

摘要/Abstract

摘要： 针对有限差分方法在研究岩体非连续变形和水力弱化参数方面的弊端,将屈服状态的岩体单元设置为空单元,使其不再参与计算,实现非连续变形的表征特点。通过分析拟合得到岩体参数随水压增加的弱化关系,重新定义柔度张量,嵌入弱化参数,修正并开发了水力弱化本构模型、屈服函数以及流动法则。基于提出的改进方法,分析岩体压缩条件下的非连续表征特性、各阶段变形特性以及强度影响规律等,模拟结果与已有文献中试验结果吻合度较高,验证了方法的有效性。

关键词: 有限差分, 岩体破裂, 非连续表征, 水力弱化, 本构开发

中图分类号:

TU452

陈云娟,敬艺,贾润枝,王军,杨卓,罗平利. 基于有限差分的岩体破裂非连续变形及水力弱化效应表征方法[J]. 山东大学学报 (工学版), 2023, 53(5): 103-111.

CHEN Yunjuan, JING Yi, JIA Runzhi, WANG Jun, YANG Zhuo, LUO Pingli. Representation of discontinuous deformation and hydraulic weakening effect of rock masses failure based on finite difference method[J]. Journal of Shandong University(Engineering Science), 2023, 53(5): 103-111.

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基于有限差分的岩体破裂非连续变形及水力弱化效应表征方法

Representation of discontinuous deformation and hydraulic weakening effect of rock masses failure based on finite difference method

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