膨胀土地层锚索预应力损失与流变耦合模型研究

doi:10.13722/j.cnki.jrme.2019.0491

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Abstract Bolting effect of prestressed anchor cables in expansive soil layers is greatly affected by the water content of the stratum，and the prestress loss of the anchor cable is closely related to the stress relaxation of the soil. Taking the expansive soil in Chengdu area，Sichuan，as the research object，indoor model tests were performed to study the prestress loss law of pretressed anchor cables in the expansive soil layer with four different water contents. In terms of the unique viscoelastic-plastic mechanical characteristics of expansive soils，a strain-equalization calculation model of expansive soil-anchor coupling effect and the corresponding constitutive and relaxation equations were proposed. Comparison between the developed model and model test results also carried out. The results show that the prestress attenuation can be divided into rapid attenuation，slow attenuation and relative stabilization stages，and that the attenuation speed and amplitude of prestressed anchor cables increase with increasing the initial water content of the expansive soil layer. The initial prestress loss of the prestressed anchor cable in the expensive soil layer can reach up to 80% of the total prestress loss. The calculation results by the coupling model is basically consistent with the test data，which indicate that the model is capable to be used to evaluate the bolting effect of anchor cables in soil layers with known physical parameters.

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	LI Tao1
	CAI Haibo1
	LIU Bo1
	2
	LUO Xinghao1
	QIAN Xiao3

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LI Tao1,CAI Haibo1,LIU Bo1, et al. Study on prestress loss and rheological coupling model of anchor cables in expansive soil layers#br#[J]. , 2020, 39(1): 147-155.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2019.0491 OR http://www.rockmech.org/EN/Y2020/V39/I1/147

[6]	张咸恭，王思敬，李智毅，等. 工程地质学概论[M]. 北京：地震出版社，2005：6-16.(ZHANG Xiangong，WANG Sijing，LI Zhiyi，et al. Introduction to Engineering Geology[M]. Beijing：Seismological Press，2005：6-16.(in Chinese))
[4]	郑卫锋，邵龙潭，贾金青. 深基坑预应力锚杆锚固段应力分布规律与应用[J]. 辽宁工程技术大学学报：自然科学版，2008，27(6)：862-865.(ZHENG Weifeng，SHAO Longtan，JIA Jinqing. Application of stress distribution to boned section in priestesses anchor for deep foundation pit[J]. Journal of Liaoning Technical University：Natural Science，2008，27(6)：862-865.(in Chinese))
[14]	吴顺川，潘旦光. 膨胀土边坡自平衡预应力锚固方法研究[J]. 岩土工程学报，2008，(4)：492-497.(WU Shunchuan，PAN Danguang. Reinforce approach of self-balance pre-stressed bolts for expensive soil slope[J]. Chinese Journal of Geotechnical Engineering，2008，(4)：492-497.(in Chinese))
[24]	唐孟雄. 基坑工程预应力锚索锚固力试验研究[J]. 岩石力学与工程学报，2007，26(6)：1 158-1 163.(TANG Mengxiong. Test study on anchorage force of prestressed anchor cables for foundation pit[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(6)： 1 158-1 163.(in Chinese))
[1]	何思明，王全才. 预应力锚索作用机制研究中的几个问题[J]. 地下空间工程学报，2006，2(1)：160-165.(HE Siming，WANG Quancai. Problems of the study on mechanism of anchor cable[J]. Chinese Journal of Underground Space and Engineering，2006，2(1)：160-165.(in Chinese))
[3]	CHUNG KYUNGSOO. Prediction of pre- and post-peak behavior of concrete-filled circular steel tube columns under cyclic loads using fiber element method[J]. Thin-Walled Structures，2010，48(2)：169-178.
[5]	HELENE P，PEREIRA M F，CASTRO P. Performance of a 40-year-old concrete bridge with embedded，prestressed galvanized strands[J]. Materials Performance，2008，43(10)：42-45.
[7]	汪班桥，门玉明，沈星. 水作用下黄土土层锚索的预应力损失[J]. 水文地质工程地质，2010，37(1)：76-79.(WANG Banqiao，GUAN Yuming，SHEN Xing. Analysis on the pre-stress loss of pre-stressed anchors in loess under water action[J]. Hydrogeology and Engineering Geology，2010，37(1)：76-79.(in Chinese))
[16]	何思明，王成华，乔建平. 预应力锚索群锚效应研究：理论与建模[J]. 中国科学E辑：技术科学，2003，33(增1)：101-109.(HE Siming，WANG Chenghua，QIAO Jianping. Study on anchorage effect of prestressed anchor cables：theory and modeling[J]. Science in China Series E：Technological Sciences，2003，33(Supp.1)：101-109.(in Chinese))
[17]	陆锡铭，朱晗迓. 破碎岩质边坡中群锚效应试验研究[J]. 公路交通科技，2005，22(6)：66-80.(LU Ximing，ZHU Hanya. Experiment and research on multi-anchorage effect in cracked rock slope[J]. Journal of Highway and Transportation Research and Development，2005，22(6)：66-80.(in Chinese))
[26]	顾金才，沈俊，陈安敏，等. 锚索预应力在岩体内引起的应变状态模型试验研究[J]. 岩石力学与工程学报，2000，19(增1)：917-921.(GU Jincai，SHEN Jun，CHEN Anmin，et al. Model testing study of strain distribution regularity in rock mass caused by pretessed anchorage cable[J]. Chinese Journal of Rock Mechanics and Engineering，2000，19(Supp.1)：917-921.(in Chinese))
[27]	阎莫明，徐祯祥，苏自约. 岩土锚固技术手册[M]. 北京：人民交通出版社，2004：148-167.(YAN Moming，XU Zhenxiang，SU Ziyue. Handbook of Geotechnical Anchoring Technology[M]. Beijing：China Communications Press，2004：148-167.(in Chinese))
[31]	范广勤. 岩土工程流变力学[M]. 北京：煤炭工业出版社，1993：36-40.(FANG guangqin. Rheological mechanics of rock engineering[M]. Beijing：Coal Industry Press，1993：36-40.(in Chinese))
[33]	HAZZARD J F，YOUNG R P. Dynamic modeling of induced seismicity[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(12)：1 365-1 376.
[8]	丁振洲，王敬林，郑颖人，等. 膨胀土地层扩底锚杆试验研究[J]. 地下空间与工程学报，2006，2(5)：753-756.(DING Zhenzhou，WANG Jinglin，ZHENG Yingren，et al. Test study on anchored bar with expanding ends in expansive soils [J]. Chinese Journal of Underground Space and Engineering，2006，2(5)：753-756.(in Chinese))
[9]	李凡，邵蒙新. 锚杆在膨胀土滑坡治理中的应用[J]. 土工基础，2002，16(4)：24-26.(LI Fan，SHAO Mengxin. Application of bolt in expansive soil landslides correction[J]. Geotechnical Foundation，2002，16(4)：24-26.(in Chinese))
[11]	周永江，何思明，杨雪莲. 预应力锚索的预应力损失机理研究[J]. 岩土力学，2006，27(8)：1 353-1 356.(ZHOU Yongjiang，HE Siming，YANG Xuelian. Study on prestress loss of anchor cables under long-term loading[J]. Rock and Soil Mechanics，2006，27(8)：1 353- 1 356.(in Chinese))
[13]	吴文清，张鸿，张红宇，等. 框格梁锚索加固膨胀土路堑边坡数值模拟及设计优化[J]. 路基工程，2014，(4)：58-60.(WU Wenqing，ZHANG Hong，ZHANG Hongyu，et al. Numerical simulation and design optimization of expansive soil cutting slopes reinforced by bolt frame pier[J]. Subgrade Engineering，2014，(4)：58-60.(in Chinese))
[15]	丁多文，白世伟，罗国煜. 预应力锚索加固岩体的应力损失分析[J]. 工程地质学报，1995，3(1)：65-69.(DING Duowen，BAI Shiwei，LUO Guoyu. Analysis on the load losses of prestressed rock cable bolts[J]. Journal of Engineering Geology，1995，3(1)：65-69.(in Chinese) )
[18]	朱晗迓. 破碎岩质边坡锚固技术研究[博士学位论文][D]. 杭州：浙江大学，2005.(ZHU Hanya. Research on prestressed anchoring technique in cracked rock slope[Ph. D. Thesis][D]. Hangzhou：Zhejiang University，2005.(in Chinese))
[19]	朱晗迓，尚岳全，陆锡铭，等. 锚索预应力长期损失与坡体蠕变耦合分析[J]. 岩土工程学报，2005，27(4)：464-468.(ZHU Hanya. SHANG Yuequan，LU Ximing，et al. Coupling analysis of long-term prestress loss and slope creep[J]. Chinese Journal of Geotechnical Engineering，2005，27(4)：464-468.(in Chinese))
[21]	陈安敏，顾金才，沈俊，等. 软岩加固中锚索张拉吨位随时间变化规律的模型试验研究[J]. 岩石力学与工程学，2002，21(2)：251-256.(CHEN Anmin，GU Jincai，SHEN Jun，et al. Model testing research on the variation of tension force of anchor cable with time in reinforcement of soft rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(2)：251-256.(in Chinese))
[23]	李端友，汤平，李亦明. 三峡永久船闸一期工程岩锚预应力监测[J]. 长江科学院院报，2009，17(1)：39-41.(LI Duanyou，TANG Ping，LI Yiming. Safety monitoring of rock anchor prestres during 1st stage construction of TGP spermanent lock[J]. Journal of Yangtze River Scientific Research Institute，2009，17(1)：39-41.(in Chinese))
[25]	程良奎，张培文，王帆. 岩土锚固工程的若干力学概念问题[J].岩石力学与工程学报，2015，34(4)：668-682.(CHENG Liangkui，ZHANG Peiwen，WANG Fan. Several mechanical concepts for anchored structures in rock and soil[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(4)：668-682.(in Chinese))
[28]	王清标，张聪，王辉，等. 预应力锚索锚固力损失与岩土体蠕变耦合效应研究[J]. 岩土力学，2014，35(8)：2 150-2 156.(WANG Qingbiao，ZHANG Cong，WANG Hui，et al. Study on the coupling effect of anchorage force loss of prestressed anchor cable and rock and soil creep[J]. Rock and Soil Mechanics，2014，35(8)：2 150-2 156.(in Chinese))
[29]	陈沅江，尹进，胡毅夫. 软岩边坡锚索预应力定量损失规律研究[J]. 岩石力学与工程学报，2013，32(8)：1 685-1 691.(CHEN Yuanjiang，YIN Jin，HU Yifu. Research on orestressed quantitative loss law of soft rock slope anchor cable[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(8)：1 685-1 691.(in Chinese))
[2]	KUMAR RAKESH，SHARMA K G，VARADARAJAN A. Post-peak response of some metamorphic rocks of India under high confining pressures[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(8)：1 357-1 362.
[10]	郑新秀. 锚杆与膨胀土相互作用机理及试验研究[硕士学位论文][D]. 长沙：湖南大学，2014.(ZHENG Xinxiu. Mechanism and experiment research on the interaction of anchor and expensive soil[M. S. Thesis][D]. Changsha：Hunan University，2014.(in Chinese))
[12]	李佳. 膨胀土滑坡成因分析及锚索(索)框架梁支护[J]. 河北省科学院学报，2015，(3)：80-84.(LI Jia. Cause analysis of expensive soil landslide and support of bolt(cable) frame beam[J]. Journal of Hebei Academy of Sciences，2015，(3)：80-84.(in Chinese))
[20]	叶惠飞. 锚索预应力损失变化规律分析[硕士学位论文][D]. 杭州：浙江大学，2004.(YE Huifei. Analysis on prestress loss of anchorage cable[M. S. Thesis][D]. Hangzhou：Zhejiang University，2004.(in Chinese))
[22]	高大水，曾勇. 三峡永久船闸高边坡锚索预应力状态监测分析[J]. 岩石力学与工程学报，2007，20(5)：653-656.(GAO Dashui，ZENG yong. Monitoring analysis of prestress state of anchor cable of high slope of the tgp permanent shiplocks[J]. Chinese Journal of Rock Mechanics and Engineering，2007，20(5)：653-656.(in Chinese))
[30]	张发明，刘宁，陈祖煜，等. 影响大吨位预应力长锚索锚固力损失的因素分析[J]. 岩土力学，2003，24(2)：194-197.(ZHANG Fa-ming，LIU Ning，CHEN Zuyu，et al. Analysis of factors affected on load losses of high capacity and long rock anchors[J]. Rock and Soil Mechanics，2003，24(2)：194-197.(in Chinese))
[32]	陈沅江. 岩石流变的本构模型及其智能辨识研究[博士学位论文][D]. 长沙：中南大学，2003.(CHEN Yuaniang. Study on the rheological constitutive model of rock and its intelligent identification [Ph. D. Thesis][D]. Changsha：Central South University，2003.(in Chinese))