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Volume 36 Issue 9
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WANG Wei-ming, CAO Zheng-long, WANG Gang-gang, PAN Guo-feng. Prestress loss of anchor cables in thick alluvial clay[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1607-1613. DOI: 10.11779/CJGE201409006
Citation: WANG Wei-ming, CAO Zheng-long, WANG Gang-gang, PAN Guo-feng. Prestress loss of anchor cables in thick alluvial clay[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(9): 1607-1613. DOI: 10.11779/CJGE201409006
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Prestress loss of anchor cables in thick alluvial clay

  • 1. College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, China;
    2. School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China

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  • Received Date: January 05, 2014
  • Published Date: September 21, 2014
    Graphical Abstract
    • Abstract
  • The deep foundation pit constructed in alluvial thick clay layer is almost supported by using anchor-pile supporting structure. Due to the loss of prestress caused by anchor deformation and creep of anchorage body and surrounding soils with time after the anchor being locked, the axial force of anchor cables in the foundation pit is unable to be kept at the design level. So the safety of the foundation pit is reduced. To solve this issue, the super tension and secondary compensation tension methods to increase the anchorage force are generally adopted at the construction site. However, it is difficult to determine the value of anchorage force in the above two methods. A simple method is given to calculate the axial force of the anchor applied in the deep foundation pit located in the area of thick alluvial clay in western Jinan. In this method, the deformation of anchorage system is separated into two parts according to the construction situation of the anchors: one part is before the anchor being locked and the other is after being locked. The second part induces the loss of prestress which can be represented by the deformation of free segment of the anchor cables. It consists of the creeps in the anchorage body and the surrounding soils. The results applicable to two construction methods give theoretical and technical assistance for in-situ construction. Furthermore, field monitoring and Plaxis numerical simulation are used to verify the effectiveness of the proposed method. Finally, the applicability of the proposed method is given.
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    • References (17)
  • [1]
    李英勇, 王梦恕, 张顶立, 等. 锚索预应力变化影响因素及模型研究[J]. 岩石力学与工程学报, 2008, 27(1): 3141-3146. (LI Ying-yong, WANG Meng-shu, ZHANG Ding-li, et al. Study on influential factors and model for variation of anchor cable prestress[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(1): 3141-3146. (in Chinese))
    [2]
    张金龙, 徐卫亚, 徐 飞, 等. 深卸荷变形拉裂岩体锚索预应力损失规律研究[J]. 岩石力学与工程学报, 2009, 28(2): 3965-3970. (ZHANG Jin-long, XU Wei-ya, XU Fei, et al. Study on prestress loss law of anchor cables in deep unloading deformed ripped blocks[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(2): 3965-3970. (in Chinese))
    [3]
    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 Duo-wen, BAI Shi-wei, LUO Guo-yu. Anslysis on the load losses of prestressde rock cablle bolts[J]. Journal of Engineering Geology, 1995, 3(1): 65-69. (in Chinese))
    [4]
    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): 1158-1163. (TANG Meng-xiong. Test study on anchorage force of prestressed anchor cables for foundation pit[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(6): 1158-1163. (in Chinese))
    [5]
    张发明, 赵维炳, 刘 宁, 等. 预应力锚索锚固荷载的变化规律及预测模型[J]. 岩石力学与工程学报, 2004, 23(1): 39-43. (ZHANG Fa-ming, ZHAO Wei-bing, LIU Ning, et al. Long-term performance and load prediction model of prestressed cables[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(1): 39-43. (in Chinese))
    [6]
    余开彪, 程凯兵, 杨明亮. 预应力锚索预应力损失研究[J]. 岩土力学, 2005, 26(增刊): 159-162. (YU Kai-biao, CHEN Kai-bing, YANG Ming-liang. Study on prestress1oss of prestressed anehor cable[J]. Rock and Soil Mechanics, 2005, 26(S0): 159-162. (in Chinese))
    [7]
    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): 464-467. (ZHU Han-ya, SHANG Yue-quan, LU Xi-ming, et al. Coupling analysis of long-term prestress loss and slope creep[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(4): 464-467. (in Chinese))
    [8]
    郑筱彦, 夏元友, 张亮亮, 等. 预应力锚索(杆)群锚作用机理研究[J]. 武汉理工大学学报, 2010, 32(11): 62-67. (ZHENG Xiao-yan, XIA Yuan-you, ZHANG Liang-liang, et al. Research of reinforcement mechanism of multi anchorage effect by prestressed anchor cable[J]. Journal of Wuhan University of Technology, 2010, 32(11): 62-67. (in Chinese))
    [9]
    金丰年, 浦奎英. 关于粘弹性模型的讨论[J]. 岩石力学与工程学报, 1995, 14(4): 355-361. (JIN Feng-nian, PU Kui-ying. Discussion of visco-elastic models[J]. Chinese Journal of Rock Mechanics and Engineering, 1995, 14(4): 355-361. (in Chinese))
    [10]
    战玉宝, 毕宣可, 尤春安. 预应力锚索锚固段应力分布影响因素分析[J]. 土木工程学报, 2007, 40(6): 49-53. (ZHAN Yu-bao, BI Xuan-ke, YOU Chun-an. Analysis of factors influencing the stress distribution in prestressed cables[J]. China Civil Engineering Journal, 2007, 40(6): 49-53. (in Chinese))
    [11]
    杨挺青. 粘弹性力学[M]. 武汉: 华中理工大学出版社, 1990: 12-17. (YANG Ting-qing. Theory of viscoelasticity[M]. Wuhan: Huazhong University of Science and Technology Press, 1990: 12-17. (in Chinese))
    [12]
    王德法, 张浩博. 轴拉荷载下混凝土徐变性能的研究[J]. 西安交通大学学报, 2000, 34(3): 95-98. (WANG De-fa, ZHANG Hao-bo. Uniaxial tensile creep of concrete[J]. Journal of Xi'an Jiaotong University, 2000, 34(3): 95-98. (in Chinese))
    [13]
    BROOKS J J. 30-year creep and shrinkage of concrete[J]. Magazine of Concrete Research, 2005, 57(9): 545-556.
    [14]
    丁宝瑛, 岳耀真, 黄淑萍. 混凝土的拉压徐变不相等时的结构应力分析[J]. 水利学报, 1987(10): 24-32. (DING Bao-ying, YUE Yao-zhen, HUANG Shu-ping. The structural stress analysis considering the difference between the tensile and compressive creeps of concrete[J]. Journal of Hydraulic Engineering, 1987(10): 24-32. (in Chinese))
    [15]
    卓 旬, 梅明荣. 混凝土徐变计算理论和方法综述[J]. 水利与建筑工程学报, 2012, 10(2): 14-19. (ZHUO Xun, MEI Ming-rong. Summarized account for calculation theory and methods of concrete creep[J]. Journal of Water Resources and Architectural Engineering, 2012, 10(2): 14-19. (in Chinese))
    [16]
    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): 1353-1356. (ZHOU Yong-jiang, HE Si-ming, YANG Xue-lian. Study on prestress loss of anchor cables under long-term loading[J]. Rock and Soil Mechanics, 2006, 27(8): 1353-1356. (in Chinese))
    [17]
    柯才桐, 陈奕柏, 曹 雄, 等. 基于变形协调土层锚杆应力传递及变形计算[J]. 暨南大学学报(自然科学版), 2013, 34(5): 507-512. (KE Cai-dong, CHEN Yi-bo, CAO Xiong, et al. The stress transmission and deformation calculation of soil anchor based on compatible state of deformation[J]. Journal of Jinan University (Natural Science), 2013, 34(5): 507-512. (in Chinese))
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