›› 2011, Vol. 32 ›› Issue (4): 1157-1162.

• Geotechnical Engineering • Previous Articles     Next Articles

Analysis of dynamic response of dangerous rock mass reinforced by prestressed anchor cables under seismic loads

SHI Yu-cheng1,QIU Ren-dong2, 3,SUN Jun-jie1,HU Ming-qing1   

  1. 1. Lanzhou Institute of Seismology, China Earthquake Administration, Lanzhou 730000, China; 2. Institute of Foundation Engineering, China Academy of Building Research, Beijing 100013, China; 3. Jianyan Foundation Engineering Co., Ltd., Beijing 100013, China
  • Received:2010-02-02 Online:2011-04-10 Published:2011-04-29

Abstract:

Aiming at the characteristics of dangerous rock mass reinforced by prestressed anchor cables, displacement field and stress field distributions are simulated under different seismic loads; and based on three typical sections of a reinforced dangerous rock mass project, dynamic response and variations are revealed. The analysis results show that the displacements and stresses of the reinforced dangerous rock mass increase obviously with the increase of seismic dynamic peak acceleration (PGA) and characteristic period of response spectrum (Tg). Range of stress concentration expands; probability of surrounding rock damage increases and stability decreases. The results can provide theoretical basis and practical reference for aseismic reinforcement and disaster mitigation of dangerous rock mass.

Key words: dangerous rock, prestressed anchor cable, seismic loads, dynamic finite element method

CLC Number: 

  • TU 435
[1] LI Jian, CHEN Shan-xiong, YU Fei, JIANG Ling-fa, DAI Zhang-jun. Discussion on mechanism of reinforcing high and steep slope with prestressed anchor cable [J]. Rock and Soil Mechanics, 2020, 41(2): 707-713.
[2] LIU Xin-rong, DENG Zhi-yun, LIU Yong-quan, LIU SHU-lin, LU Yu-ming, . Study of cumulative damage and failure mode of horizontal layered rock slope subjected to seismic loads [J]. Rock and Soil Mechanics, 2019, 40(7): 2507-2516.
[3] YU Yu, LIU Xin-rong, LIU Yong-quan, . Field experimental investigation on prestress loss law of anchor cable in foundation pits [J]. Rock and Soil Mechanics, 2019, 40(5): 1932-1939.
[4] HU Jie, LI Shu-cai, SHI Shao-shuai, LI Li-ping, LIU Jin-pei, LIU Hong-liang, HE Peng. Model test study of rockfall impacts on tunnel heading slope and discussion of related mechanisms [J]. , 2018, 39(7): 2527-2536.
[5] YAN Min-jia, XIA Yuan-you, LIU Ting-ting. Limit analysis of bedding rock slopes reinforced by prestressed anchor cables under seismic loads [J]. , 2018, 39(7): 2691-2698.
[6] LIU Yong-quan, LIU Xin-rong, XIE Ying-kun, YU Yu, . Discussion on selection law of initial stretch locking value of prestressed anchor cables in foundation pits [J]. , 2018, 39(6): 2164-2174.
[7] CHEN Chun-shu, XIA Yuan-you. Seismic reliability analysis of slope reinforced with prestressed anchor cable based on global limit response surface [J]. , 2017, 38(S1): 255-262.
[8] LIU Guo-qing, XIAO Ming, ZHOU Hao. Analysis of mechanical characteristics and anchoring mechanism of prestressed anchor cable in underground caverns [J]. , 2017, 38(S1): 439-446.
[9] JIA Yan-chang, XIE Mo-wen, CHANG Sheng-xiang, Lü Fu-xia. A model for evaluation of stability of sliding- and falling-type dangerous rock blocks based on natural vibration frequency [J]. , 2017, 38(7): 2149-2156.
[10] YIN Jing, DENG Rong-gui, WANG Jin-mei, WANG Yuan-yuan, LI Kai-tian,. Transfer matrix algorithm for calculating internal forces of anti-sliding pile with anchor cable [J]. , 2017, 38(12): 3517-3523.
[11] YAN Zhen, WANG Yuan-zhan, XIAO Zhong, SUN Xi-ping,. Dynamic finite element analyses of undrained strength degradation of soft clay in ABAQUS under cyclic loading [J]. , 2016, 37(S2): 735-744.
[12] DENG Jian, XIAO Ming, XIE Bing-bing, . Analysis of mechanical characteristic and optimization of initial tensile tonnage of prestressed anchor cable [J]. , 2016, 37(8): 2359-2365.
[13] HUANG Qiu-xiang, XU Xiang-tao, XU Chao, LI Kai, WANG Jia-lin. Dynamic response characteristics of an anchored rock slope during Wenchuan earthquake [J]. , 2016, 37(6): 1729-1736.
[14] LIU Guo-huan , LIAN Ji-jian , WANG Hong-zhen , YU Tong-shun,. A practical method for applying the hydrodynamically induced mass and the sensitivity analysis of the ground-bucket foundation-tower system [J]. , 2016, 37(3): 767-775.
[15] ZHANG Xiong , CHEN Sheng-hong,. Analytical solution for load transfer along anchored section of prestressed anchor cable [J]. , 2015, 36(6): 1667-1675.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] LIU Xiao,TANG Hui-ming,LIU Yu. A new model for landslide displacement prediction based on set pair analysis and fuzzy-Markov chain[J]. , 2009, 30(11): 3399 -3405 .
[2] HU Da-wei, ZHOU Hui, XIE Shou-yi, ZHANG Kai, SHAO Jian-fu, FENG. Study of Biot’s coefficients of marble during plastic deformation phase[J]. , 2009, 30(12): 3727 -3732 .
[3] SHI Xu-chao,HAN Yang. Water absorption test of soft clay after rebound under unloading[J]. , 2010, 31(3): 732 -736 .
[4] ZHU Jian-ming,PENG Xin-po,YAO Yang-ping,XU Jin-hai. Application of SMP failure criterion to computing limit strength of coal pillars[J]. , 2010, 31(9): 2987 -2990 .
[5] YUAN Xi-zhong, LI Ning , ZHAO Xiu-yun, YANG Yin-tao. Analysis of sensitivity of frozen ground bearing capacity to climate change in Northeast China permafrost regions[J]. , 2010, 31(10): 3265 -3272 .
[6] BAI Bing, LI Xiao-chun, SHI Lu, TANG Li-zhong. Slope identity of elastoplastic stress-strain curve and its verification and application[J]. , 2010, 31(12): 3789 -3792 .
[7] LI Zhan-hai,ZHU Wan-cheng,FENG Xia-ting,LI Shao-jun,ZHOU Hui,CHEN Bing-rui. Effect of lateral pressure coefficients on damage and failure process of horseshoe-shaped tunnel[J]. , 2010, 31(S2): 434 -441 .
[8] CAI Hui-teng, WEI Fu-quan, CAI Zong-wen. Study of silty clay dynamic characteristics in Chongqing downtown area[J]. , 2009, 30(S2): 224 -228 .
[9] SONG Ling , LIU Feng-yin , LI Ning . On mechanism of rotary cone penetration test[J]. , 2011, 32(S1): 787 -0792 .
[10] JIN Jie-fang , LI Xi-bing , YIN Zhi-qiang , ZOU Yang. A method for defining rock damage variable by wave impedance under cyclic impact loadings[J]. , 2011, 32(5): 1385 -1393 .