石英云母片岩各向异性蠕变特性试验研究

刘怀忠; 谢红强; 何江达; 肖明砾; 卓莉; 刘建锋

doi:10.3969/j.issn.0258-2724.2015.04.013

石英云母片岩各向异性蠕变特性试验研究

doi: 10.3969/j.issn.0258-2724.2015.04.013

刘怀忠¹,
谢红强^1,2, ,,
何江达^1,2,
肖明砾^1,2,
卓莉^1,2,
刘建锋^1,2

基金项目:

国家自然科学基金资助项目(51079092)

四川省科技支撑计划资助项目(2008SZ0163)

详细信息

作者简介:
刘怀忠(1990-),男,博士研究生,研究方向为岩土工程数值模拟,电话:15828642880,E-mail:sclhz2009@163.com

通讯作者:
谢红强(1976-),男,副教授,博士,研究方向为岩土工程、地下工程,E-mail:alex_xhq@scu.edu.cn

计量
- 文章访问数: 776
- HTML全文浏览量: 73
- PDF下载量: 483
- 被引次数: 0
出版历程
- 收稿日期: 2014-10-12
- 刊出日期: 2015-08-25

Experimental Investigation on Anisotropic Creep Characteristics of Quartz Mica Schist

摘要

摘要: 为探明丹巴水电站地下厂房区石英云母片岩的各向异性流变力学特性,分别对片理方向不同的2组石英云母片岩试样进行了单轴压缩蠕变试验.根据石英云母片岩蠕变曲线的特征,通过串联一个非线性黏性元件,对损伤西原模型进行改进,并按照Lemaitre应变等效原理推导了模型的蠕变方程,获得了石英云母片岩的一维流变模型参数;分析了片理面和应力水平对瞬时蠕变、衰减蠕变、稳定蠕变和加速蠕变等特性的影响.结果表明:随应力水平提高,石英云母片岩的瞬时弹性模量基本不变,而滞后弹性模量、稳定黏性系数和蠕变破坏时间均减小;加载方向与片理面垂直时,石英云母片岩具有较强的黏塑性和较高强度;加载方向与片理面平行时,石英云母片岩具有较强的瞬时弹性、黏弹性、黏性和延性.
- 石英云母片岩 /
- 各向异性 /
- 蠕变试验 /
- 损伤 /
- 改进西原模型
Abstract: To investigate the anisotropic rheological properties of quartz mica schist in the underground chamber of Danba hydropower station, two groups of uniaxial compression creep tests were conducted on quartz mica schist samples. Based on the creep characteristics of quartz mica schist, the damage Nishihara model was improved by adding a nonlinear viscous component in series, the creep equation was derived in the light of the Lemaitre strain equivalence principle, and one-dimensional rheological mechanical parameters were obtained. Furthermore, the effects of schistosity and stress level on transient creep, decelerating creep, steady-state creep, accelerating creep and other creep characteristics were analyzed. The research results show that with the increase of stress, the instantaneous elastic modulus of quartz mica schist remains a constant roughly, but its hysteretic elastic modulus, stable viscous coefficient and creep failure time decrease. Quartz mica schist exhibits a strong visco-plasticity and high strength when loading direction is perpendicular to schistosity, while quartz mica schist shows strong instantaneous elasticity, visco-elasticity, viscosity and ductility when the loading direction is parallel to schistosity.
- quartz mica schist /
- anisotropy /
- creep test /
- damage /
- improved Nishihara model

HTML全文

参考文献(30)

周维垣. 高等岩石力学

FABRE G, PELLET F. Creep and time-dependent damage in argillaceous rocks

[M]. 北京:水利电力出版社,1990: 26-29.

付志亮,高延法,宁伟,等. 含油泥岩各向异性蠕变研究

DUBEY R K, GAIROLA V K. Influence of structural anisotropy on creep of rocksalt from Simla Himalaya, India: an experimental approach

[J]. International Journal of Rock Mechanics and Mining Sciences, 2006, 43(6): 950-960.

熊良宵,杨林德,张尧. 绿片岩的单轴压缩各向异性蠕变试验研究

[J]. 采矿与安全工程学报,2007,24(3): 353-356. FU Zhiliang, GAO Yanfa, NING Wei, et al. Creep of anisotropic oil shale

[J]. Journal of Ming and Safety Engineering, 2007, 24(3): 353-356.

[J]. Journal of Structural Geology, 2008, 30(6): 710-718.

[J]. 同济大学学报:自然科学版,2010,38(11): 1568-1573. XIONG Liangxiao, YANG Linde, ZHANG Yao. Anisotropic creep test of green schist under uniaxial compression

[J]. Journal of Tongji University: Natural Science, 2010, 38(11): 1568-1573.XU Tengfei, XIANG Tianyu, BAI Xuemeng, et al. Stochastic simulation of reinforced concrete beams with a piecewise response surface

[J].Engineering Mechanics, 2014, 31(11): 170-174.

童育强,向天宇,赵人达. 基于退化理论的空间梁单元有限元分析

马坤,向天宇,赵人达,等. 高速铁路钢筋混凝土拱桥长期变形的随机分析

刘蕾蕾,白雪濛,徐腾飞,钢筋混凝土梁时变变形的概率密度演化

[J]. 工程力学,2006,23(1): 33-37.TONG Yuqiang, XIANG Tianyu, ZHAO Renda. A degenerated 3D beam element for finite element analysis

VAL D V, CHERNIN L. Serviceability reliability of reinforced concrete beams with corroded reinforcement

[J]. Engineering Mechanics, 2006, 23(1): 33-37.

GOEL R, KUMAR R, PAUL D K. Comparative study of various creep and shrinkage prediction models for concrete

BRESLER B, SCORDELIS A C. Shear strength of reinforced concrete beams

[J]. 土木工程学报,2012,45(11): 141-146.MA Kun, XIANG Tianyu, ZHAO Renda, et al. Stochastic analysis of long-term deformation of reinforced concrete arch bridges for high-speed railways

[J]. China Civil Engineering Journal, 2012, 45(11): 141-146.

VECCHIO F J, SHIM W. Experimental and analytical reexamination of classic concrete beam test

[C]//第23届全国结构工程学术会议论文集:第Ⅱ册. 兰州:

[s. n.],2014: 80-86.

[J]. Journal of Structural Engineering. 2009,19(3): 896-905.

[J]. Journal of Materials in Civil Engineering. 2007, 19(3): 249-260.

[J]. Journal Proceedings. 1963, 60(1): 51-72.

[J]. Journal of Structural Engineering, 2004, 130(3): 460-469.

施引文献

附加材料(0)

访问统计