›› 2013, Vol. 34 ›› Issue (4): 1031-1036.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of dynamic properties of highly weathered granite

SONG Quan-jie1, LI Hai-bo1, LI Jun-ru1, QU Hong-yuan2, ZHANG Wei1, FU He-dong3   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Beijing Huayu Engineering Co., Ltd., Beijing 100120, China; 3. Fuzhou Tiejian Construction Co., Ltd., Fuzhou 350013, China
  • Received:2012-02-13 Online:2013-04-10 Published:2013-04-16

PDF (Chinese)

1947

Abstract: Equivalent nonlinear model is usually applied in seismic response analysis. The shear modulus and damping ratio are two important properties in this model. Highly weathered granite is common in large engineering. It is essential to study dynamic properties of highly weathered granite. The shear modulus and damping ratio of highly weathered granite are studied with GDS resonant-column; as its the capability is excellent, it is popular in the world. The confining pressure and pore water pressure to consolidate can be controlled well by GDS RCA. After the end of sample’ consolidation, shear modulus and damping ratio can be given by experiment in the state of this effective stress. Changing confining pressure and pore water pressure, resonant frequency, shear modulus and damping ratio can be given with another effective stress. In different effective stresses, variation of shear modulus and damping ratio can be observed. And fitting curves of shear modulus and damping ratio that are put forward by Hadin-Drnevich[1] are turned out on the basis of experimental data. The authors discuss the damping mechanism of highly weathered granite sample by amfusing frictional theory. It can be seen that resonance frequency of the sample’s system has a positive correlation with shear strain, but sample’s damping ratio has a negative with shear strain. The effective stress can have impact on both sample’s shear modulus and damping ratio. However, pore water pressure can only act on damping ratio.

Key words: highly weathered granite, shear modulus, damping ratio, resonant column

CLC Number: 

  • TU 452
[1] LIANG Ke, CHEN Guo-xing, LIU Kang, WANG Yan-zhen, . Degradation properties and prediction model of maximum shear modulus of saturated coral sand under cyclic triaxial loading [J]. Rock and Soil Mechanics, 2020, 41(2): 601-611.
[2] LIANG Ke, HE Yang, CHEN Guo-xing, . Experimental study of dynamic shear modulus and damping ratio characteristics of coral sand from Nansha Islands [J]. Rock and Soil Mechanics, 2020, 41(1): 23-31.
[3] RUI Sheng-jie, GUO Zhen, WANG Li-zhong, ZHOU Wen-jie, LI Yu-jie, . Experimental study of cyclic shear stiffness and damping ratio of carbonate sand-steel interface [J]. Rock and Soil Mechanics, 2020, 41(1): 78-86.
[4] LIANG Ke, CHEN Guo-xing, HE Yang, LIU Jing-ru, . An new method for calculation of dynamic modulus and damping ratio based on theory of correlation function [J]. Rock and Soil Mechanics, 2019, 40(4): 1368-1376.
[5] YANG Wen-bao, WU Qi, CHEN Guo-xing, . Dynamic shear modulus prediction method of undisturbed soil in the estuary of the Yangtze River [J]. Rock and Soil Mechanics, 2019, 40(10): 3889-3896.
[6] ZHUANG Xin-shan, WANG Jun-xiang, WANG Kang, LI Kai, HU Zhi. Experimental study on dynamic characteristics of expansive soil modified by weathered sand [J]. Rock and Soil Mechanics, 2018, 39(S2): 149-156.
[7] SHENG Yun-feng, CHEN Yuan, ZHOU Wei, MA Gang, CHANG Xiao-lin, . Dynamic response analysis of rockfill dam based on modified dynamic shear modulus model [J]. Rock and Soil Mechanics, 2018, 39(S2): 405-414.
[8] ZHANG Wei, LI Ya, ZHOU Song-wang, JIANG Zheng-bo, WU Fei, LIANG Wen-zhou,. Experimental research on cyclic behaviors of clay in the northern region of South China Sea [J]. , 2018, 39(7): 2413-2423.
[9] KONG Gang-qiang, LI Hui, WANG Zhong-tao , WEN Lei,. Comparison of dynamic properties between transparent sand and natural sand [J]. , 2018, 39(6): 1935-1940.
[10] LIU Fei-yu, SHI Jing, WANG Jun, CAI Yuan-qiang,. Dynamic shear behavior of interface for clay reinforced with geogrid encapsulated in thin layers of sand [J]. , 2018, 39(6): 1991-1998.
[11] WU Meng-tao, LIU Fang-cheng, CHEN Ju-long, CHEN Lu. Influence of water content on dynamic shear modulus and damping ratio of rubber-sand mixture under large strains [J]. , 2018, 39(3): 803-814.
[12] CHEN Shu-feng, KONG Ling-wei, LI Cheng-sheng, . Nonlinear characteristics of Poisson's ratio of silty clay under low amplitude strain [J]. , 2018, 39(2): 580-588.
[13] LUO Lan, XIA Tang-dai, QIU Hao-miao, . Effect of particle shape on shear modulus of sand in K0 condition [J]. , 2018, 39(10): 3695-3702.
[14] WANG Jin, ZHU Ze-qi, CHEN Jian, FU Xiao-dong, FANG Qiang, . Study of in-situ mechanical properties of littoral deposit soft soil by self-boring pressuremeter [J]. , 2017, 38(S1): 195-202.
[15] HE Ming-ming, LI Ning, CHEN Yun-sheng, ZHU Cai-hui. Damping ratio and damping coefficient of rock under different cyclic loading conditions [J]. , 2017, 38(9): 2531-2538.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] LIU Qing-bing，XIANG Wei，ZHANG Wei-feng，CUI De-shan. Experimental study of ionic soil stabilizer-improves expansive soil[J]. , 2009, 30(8): 2286 -2290 .
[2] KUANG Yu-chun, WU Kai-song, YANG Ying-xin, MA De-kun. Simulation model of drilling process of three-cone bit[J]. , 2009, 30(S1): 235 -238 .
[3] DU Wen-qi, WANG Gang. Statistical analysis of earthquake-induced sliding displacements of earth structures[J]. , 2011, 32(S1): 520 -0525 .
[4] YAN Zhi-hua, LIU Zhi-wei, LIU Hou-jian. Treatment and parameter selection of high slope of a power plant located in the terraces of Yellow River[J]. , 2009, 30(S2): 465 -468 .
[5] XU Zhen-hao , LI Shu-cai , LI Li-ping , HOU Jian-gang , SUI Bin , SHI Shao-shuai. Risk assessment of water or mud inrush of karst tunnels based on analytic hierarchy process[J]. , 2011, 32(6): 1757 -1766 .
[6] JIANG Quan ，FENG Xia-ting ，ZHOU Hui ，ZHAO Yang ， XU Ding-ping ，HUANG Ke ，JIANG Ya-li. Discussion of strength value for interlayer shear belt[J]. , 2011, 32(11): 3379 -3386 .
[7] WEN Shi-qing , LIU Han-long , CHEN Yu-min. Analysis of load transfer characteristics of single grouted gravel pile[J]. , 2011, 32(12): 3637 -3641 .
[8] LI Shun-qun ，GAO Ling-xia ，CHAI Shou-xi. Significance and interaction of factors on mechanical properties of frozen soil[J]. , 2012, 33(4): 1173 -1177 .
[9] ZHONG Sheng ，WANG Chuan-ying ，WU Li-xin ，TANG Xin-jian ，WANG Qing-yuan. Borehole radar response characteristics of point unfavorable geo-bodies： forward simulation of its surrounding rock and filling condition[J]. , 2012, 33(4): 1191 -1195 .
[10] MENG Zhen, CHEN Jin-jian, WANG Jian-hua, YIN Zhen-yu. Study of model test on bearing capacity of screw piles in sand[J]. , 2012, 33(S1): 141 -145 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd