新型拉压复合型锚杆锚固性能研究:Ⅰ简化理论

涂兵雄; 刘士雨; 俞缙; 何锦芳; 周建烽; 贾金青

doi:10.11779/CJGE201812017

新型拉压复合型锚杆锚固性能研究:Ⅰ简化理论 English Version

1. 华侨大学福建省隧道与城市地下空间工程技术研究中心,福建厦门 361021;
2. 大连理工大学土木工程学院,辽宁大连 116024

基金项目: 国家自然科学基金项目（51408242,51678112,51679093,51874144）; 中国博士后科学基金项目（2016M592082）

详细信息

作者简介:
涂兵雄(1984- ),男,硕士生导师,主要从事基坑工程、边坡工程及地下空间工程等领域的教学与科研工作。E-mail：tubingxiong@163.com。

中图分类号: TU43
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出版历程
- 收稿日期: 2017-11-27
- 发布日期: 2018-12-24

Analysis of anchorage performance on new tension-compression anchor： Ⅰ simplified theory

1. Fujian Engineering Technology Research Center for Tunnel and Underground Space, Huaqiao University, Xiamen 361021, China;
2. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

摘要

摘要: 针对新型拉压复合型锚杆,假定锚固体与岩土体之间的剪应力呈三角形分布,对其锚固机理进行了研究。推导得出了拉压复合型锚杆的抗拔承载力计算公式和与拉力型锚杆抗拔承载力之比（承载比）。对承载比的曲线分析结果表明：承载比随锚固段长度的增加而增加,当锚固段长度系数k₁ =2.0时,承载比达到最大值2.0;承载比整体随承压锚固段长度系数k₂呈碟碗形对称分布,且随k₂的增加而先增加后减小,并在k₂=0.5时最大;当k₁≥2.0时,承载比的最大值不再随锚固段长度增加而继续增加,但是满足承载比达到最大值的k₂取值区间变大。对比拉压复合型锚杆室内试验成果,推导的承载比计算值与试验值吻合较好。在相同锚固段长度下,拉压复合型锚杆抗拔承载力可达拉力型锚杆2.0倍,具有良好的工程应用前景。
- 拉压复合型锚杆 /
- 锚固机理 /
- 黏结强度 /
- 抗拔承载力
Abstract: The anchorage mechanism of a new tension-compression composite anchor is studied based on the assumption of triangular distribution of the shear stress between anchorage body and rock mass. The formula for calculating the uplift bearing capacity of the tension-compression composite anchor and the bearing capacity ratio of tension-compression composite anchor to tension type anchor (BCA) are derived. The analysis results for BCA show that the value of BCA increases with the increase of the anchorage length. BCA has the maximum value of 2.0 when the anchorage length coefficient k₁ = 2.0. The curve, which is like a bowl, of BCA is symmetricalyl distributed over the compacted anchorage length coefficient k₂. The value of BCA increases first and then decreases with the increase of k₂, and it has the maximum value when k₂ = 0.5. The maximum value of BCA no longer continues to increase with the increase of the anchorage length when k₁ ≥2.0, but the value range of k₂ expands, with which BCA has the maximum value. The calculated value of the derived BCA agrees better with the test one as compared with the model test results of tension-compression composite anchor. The uplift bearing capacity of tension-compression composite anchor can reach 2.0 times that of the tension type anchor under the same anchorage length. So the tension-compression composite anchor has a very good prospect in engineering application.
- tension-compression composite anchor /
- anchorage mechanism /
- bonding strength /
- uplift bearing capacity

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参考文献(23)

[1]	程良奎. 岩土锚固的现状与发展[J]. 土木工程学报, 2001, 34(3): 7-12. (CHENG Liang-kui.Present status and development of ground anchorages[J]. China Civil Engineering Journal, 2001, 34(3): 7-12. (in Chinese))
[2]	贾强, 应惠清, 张鑫. 锚杆静压桩技术在既有建筑物增设地下空间中的应用[J]. 岩土力学, 2009, 30(7): 2053-2058. (JIA Qiang, YING Hui-qing, ZHANG Xin.Construction of basement in existing buildings by static bolt-pile[J]. Rock and Soil Mechanics, 2009, 30(7): 2053-2058. (in Chinese))
[3]	郭钢, 刘钟, 邓益兵, 等. 砂土中扩体锚杆承载特性模型试验研究[J]. 岩土力学, 2012, 33(12): 3645-3652. (GUO Gang, LIU Zhong, DENG Yi-bing, et al.Model test research on bearing capacity characteristics of underreamed ground anchor in sand[J]. Rock and Soil Mechanics, 2012, 33(12): 3645-3652. (in Chinese))
[4]	郭钢, 刘钟, 李永康, 等. 扩体锚杆拉拔破坏机制模型试验研究[J]. 岩石力学与工程学报, 2013, 32(8): 1677-1684. (GUO Gang, LIU Zhong, LI Yong-kang, et al.Model test research on failure mechanism of underreamed ground anchor[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32(8): 1677-1684. (in Chinese))
[5]	张虎元, 王晓东, 王旭东, 等. 楠竹加筋复合锚杆内部界面黏结滑移模型[J]. 岩土力学, 2011, 32(3): 789-796. (ZHANG Hu-yuan, WANG Xiao-dong, WANG Xu-dong, et al.Bond-slip model for bamboo-steel cable composite anchor[J]. Rock and Soil Mechanics, 2011, 32(3): 789-796. (in Chinese))
[6]	王晓东, 张虎元, 吕擎峰. 楠竹加筋复合锚杆静力学性能试验研究[J]. 土木工程学报, 2011, 44(12): 108-115. (WANG Xiao-dong, ZHANG Hu-yuan, LU Qing-feng.Laboratory study of the static properties of bamboo-steel cable composite anchor[J]. China Civil Engineering Journal, 2011, 44(12): 108-115. (in Chinese))
[7]	曹佳文, 彭振斌, 彭文祥, 等. 充气锚杆在砂土中的模型试验研究[J]. 岩土力学, 2011, 32(7): 1957-1962. (CAO Jia-wen, PENG Zhen-bin, PENG Wen-xiang, et al.Model test study of inflated anchors in sands[J]. Rock and Soil Mechanics, 2011, 32(7): 1957-1962. (in Chinese))
[8]	彭文祥, 张旭, 曹佳文. 充气锚杆极限承载力计算方法[J]. 岩土力学, 2013, 34(6): 1696-1702. (PENG Wen-xiang, ZHANG Xu, CAO Jia-wen.Calculation method for ultimate bearing capacity of inflatable anchor[J]. Rock and Soil Mechanics, 2013, 34(6): 1696-1702. (in Chinese))
[9]	刘钟, 郭钢, 张义, 等. 囊式扩体锚杆施工技术与工程应用[J]. 岩土工程学报, 2014, 36(增刊2): 205-211. (LIU Zhong, GUO Gang, ZHANG Yi, et al.Construction technology and engineering applications of capsule-type under-reamed ground anchor[J]. Chinese Journal of Geotechnical Engineering, 2014, 36(S2): 205-211. (in Chinese))
[10]	XIAO Shu-jun, CHEN Chang-fu.Mechanical mechanism analysis of tension type anchor based on shear displacement method[J]. Journal of Central South University of Technology, 2008, 15(1): 106-111.
[11]	何思明, 李新坡. 预应力锚杆作用机制研究[J]. 岩石力学与工程学报, 2006, 25(9): 1876-1880. (He Si-ming, LI Xin-po.Study on mechanism of prestressed anchor bolt[J]. J Chinese Journal of Rock Mechanics and Engineering, 2006, 25(9): 1876-1880. (in Chinese))
[12]	何思明, 田金昌, 周建庭. 胶结式预应力锚索锚固段荷载传递特性研究[J]. 岩石力学与工程学报, 2006, 25(1): 117-121. (He Si-ming, TIAN Jin-chang, ZHOU Jian-ting.Study on load transfer of bond prestressed anchor rope[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(1): 117-121. (in Chinese))
[13]	YANG S T, WU Z M, HU X Z, et al.Theoretical analysis on pullout of anchor from anchor-mortar-concrete anchorage system[J]. Eng Fract Mech, 2008, 75(5): 961-985.
[14]	BENMOKRANE B, CHENNOUF A, MITRI H S.Laboratory evaluation of cement-based grouts and grouted rock anchors[J]. Int J Rock Mech Min Sci Geomech, 1995, 32(7): 633-642.
[15]	段建, 言志信, 郭锐剑, 等. 土层锚杆拉拔界面松动破坏分析[J]. 岩土工程学报, 2012, 34(5): 936-941. (DUAN jian, YAN Zhi-xin, GUO Rui-jian, et al. Failure analysis of soil anchors induced by loose interface under pullout load[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(5): 936-941. (in Chinese))
[16]	孔宪宾, 余跃欣, 李炜, 等. 土-锚杆相互作用机理的研究[J]. 工程力学, 2000, 17(3): 80-86. (KONG Xian-bin, SHE Yue-xin, LI Wei, et al.The mechanism study of soil-anchor interaction[J]. Engineering Mechanics, 2000, 17(3): 80-86. (in Chinese))
[17]	张洁, 尚岳全, 叶彬. 锚杆临界锚固长度解析计算[J]. 岩石力学与工程学报, 2005, 24(7): 1134-1138. (ZHANG Jie, SHANG Yue-quan, YE Bin.Analytical calculations of critical anchorage length of bolts[J]. Chinese Journal of Rock Mechanics and Engineering, 2005, 24(7): 1134-1138. (in Chinese))
[18]	涂兵雄, 贾金青, 俞缙, 等.一种拉压复合型锚杆: 中国, ZL201420450678.5[P]. 2014. (TU Bing-xiong, JIA Jin-qin, YU Jin, et al.A tension-compression composite anchor: China, ZL201420450678.5[P]. 2014. (in Chinese))
[19]	SERRANO A, OLALLA C.Tensile resistance of rock anchors[J]. International Journal of Rock Mechanics and Mining Sciences, 1999, 36(4): 449-474.
[20]	KILIC A, YASAR E, ATIS C D.Effect of bar shape on the pull-out load capacity of fully grouted rock bolt[J]. Tunnelling and Underground Space Technology, 2002, 18(1): 1-6.
[21]	郭锐剑, 谌文武, 段建, 等. 考虑界面软化特性的土层锚杆拉拔受力分析[J]. 中南大学学报, 2012, 43(10): 4003-4009. (GUO Rui-jian, CHEN Wen-wu, DUAN Jian, et al.Pullout mechanical analysis of soil anchor based on softening behavior of interface[J]. Journal of Central South University, 2012, 43(10): 4003-4009. (in Chinese))
[22]	尤春安, 战玉宝. 预应力锚索锚固段界面滑移的细观力学分析[J]. 岩石力学与工程学报, 2009, 28(10): 1976-1985. (YOU Chun-an, ZHANG Yu-bao.Analysis of interfacial slip mesomechanics in anchorage section of prestressed anchor cable[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(10): 1976-1985. (in Chinese))
[23]	龙照, 赵明华, 张恩祥, 等. 锚杆临界锚固长度简化计算方法[J]. 岩土力学, 2010, 31(9): 2991-2995. (LONG Zhao, ZHAO Ming-hua, ZHANG En-xiang, et al.A simplified method for calculation critical anchorage length of bolt[J]. Rock and Soil Mechanics, 2010, 31(9): 2991-2995. (in Chinese))

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