岩质地层牛腿抗浮结构剪切力学特性及破坏特征研究

doi:10.13722/j.cnki.jrme.2022.0889

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (5342 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to explore the working characteristics of a new type of anti-floating structure in rock layer，that is，the ox leg anti-floating structure，based on the actual boundary conditions of the structure，the shear test device was designed and the indoor shear test was carried out to analyse the shear failure characteristics. The deformation evolution process，shear failure mode and damage evolution law were investigated by digital image correlation method and acoustic emission method. The results show that：(1) According to the characteristics of strength and deformation，the structural shear process can be divided into initial compaction stage，approximate linear elastic deformation stage，initial microcrack initiation and propagation stage，slow compression shear nonlinear deformation stage，stress brittle drop stage and plastic flow deformation stage. (2) The peak shear stress τp and peak shear displacement up show a“parabolic”trend of first increasing and then decreasing with the decrease of the leg angle，and show an approximately“inverse proportional function”trend of increasing with the increase of the leg height. (3) The failure starts from one fracture-prone area，and then successively breaks through in multiple fracture-prone areas. The shear failure mode is mainly characterized by compression shear on the left side，tension shear on the right side，and slip on the interface，with local small cracks. (4) With the increase of the leg angle，the failure mode changes from the slip along the interface to the penetrating failure along the interior of the material. With the increase of the leg height，the failure mode changes from the rapid pulling at the upper right corner to the slip along the interface and the reverse cracking at the leg to the upper and lower sides. (5) As the leg angle decreases，the duration of AE phase I is almost the same，while the duration of AE phase II increases first and then decreases，and the AE activity increases first and then decreases. As the leg angle increases，the duration of AE phase I is almost the same，and the duration of AE phase II increases gradually，and the AE activity increases gradually. The conclusion is helpful to guide the design of the ox leg anti-floating structure from limit state.

Key words： rock mechanics rock strata ox leg anti-floating structure laboratory shear test shear properties failure characteristics

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WANG Linfeng1
	2
	3
	LIU Xinrong1
	2
	3
	ZHOU Xiaohan1
	2
	3
	LIU Peng1
	2
	3
	LI Longping4
	ZHAO Shunlei5

Cite this article:

WANG Linfeng1,2,3, et al. Shear and failure characteristics of ox leg anti-floating structure in rock strata[J]. , 2023, 42(6): 1466-1481.

URL:

http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2022.0889 OR http://rockmech.whrsm.ac.cn/EN/Y2023/V42/I6/1466

[10]	罗云海，刘君. 泥岩地层抗浮锚杆试验研究[J]. 岩土工程技术，2020，34(1)：60-63.(LUO Yunhai，LIU Jun. Experimental research on anti-floating anchor of mudstone stratum[J]. Geotechnical Engineering Technique，2020，34(1)：60-63.(in Chinese))
[5]	张银屏. 盾构隧道最小覆土厚度计算方法适用性研究[J]. 施工技术，2015，44(13)：87-91.(ZHANG Yinping. Applicability study of calculation methods about the minimum thickness of shield tunnel’s covering soil[J]. Construction Technology，2015，44(13)：87-91.(in Chinese))
[7]	韩立军，王德亮，渠涛，等. 地下大型污水池爆扩抗浮锚固结构设计与应用[J]. 岩石力学与工程学报，2009，28(增1)：2 960-2 965. (HAN Lijun，WANG Deliang，QU Tao，et al. Design and application of anti-floating anchored structure by blast-expanding bore in large-scale underground sewage pool[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(Supp.1)：2 960-2 965.(in Chinese))
[9]	王永. 岩石锚杆在多层地下结构抗浮设计中的应用与研究[硕士学位论文][D]. 贵州：贵州大学，2021.(WANG Yong. The application and study of rock bolt in anti-floating design of multi-storey underground structure[M. S. Thesis][D]. Guizhou：Guizhou University，2021.(in Chinese))
[15]	王钦科，马建林，胡中波，等. 浅覆盖层软质岩中抗拔桩承载特性现场试验研究[J]. 岩土力学，2019，40(4)：1 498-1 506.(WANG Qinke，MA Jianlin，HU Zhongbo，et al. Field tests on bearing behaviors of uplift piles in soft rock with shallow overburden[J]. Rock and Soil Mechanics，2019，40(4)：1 498-1 506.(in Chinese))
[17]	杨柏，马建林，周和祥，等. 嵌岩桩抗拔承载特性的离心模型试验研究[J]. 铁道科学与工程学报，2019，16(1)：85-91.(YANG Bai，MA Jianlin，ZHOU Hexiang，et al. Centrifuge model test study on uplift behavior of rock-socketed piles[J]. Journal of Railway Science and Engineering，2019，16(1)：85-91.(in Chinese))
[19]	刘红军，王亚军，姜德鸿，等. 土岩组合双排吊脚桩桩锚支护基坑变形数值分析[J]. 岩石力学与工程学报，2011，30(增2)：4 099-4 103.(LIU Hongjun，WANG Yajun，JIANG Dehong，et al. Numerical analysis of deep foundation pit displacement with double-row end-suspended piles in strata of soil-rock dualistic structure[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.2)：4 099-4 103.(in Chinese))
[25]	中华人民共和国国家标准编写组. GB50487—2008 水利水电工程地质勘察规范[S]. 北京：中国计划出版社，2009.(The National Standards Compilation Group of the People's Republic of China. GB 50487—2008 Code for engineering geological investigation of water resources and hydropower[S]. Beijing：China Planning Press，2009.(in Chinese))
[3]	ZHANG C M. Application and innovation of anti-floating technology in basement structure design[C]// Proceedings of the 7th International Conference on Social Science，Education and Humanities Research. [S. l.]：[s. n.]，2018：674-679.
[13]	穆锐，浦少云，黄质宏，等. 土岩组合岩体中抗拔桩极限承载力的确定[J]. 岩土力学，2019，40(7)：2 825-2 837.(MU Rui，PU Shaoyun，HUANG Zhihong，et al. Determination of ultimate bearing capacity of uplift piles in combined soil and rock masses[J]. Rock and Soil Mechanics，2019，40(7)：2 825-2 837.(in Chinese))
[23]	QUAN J A，YAO Y，FEI Y A，et al. Deformation and failure behaviours of rock-concrete interfaces with natural morphology under shear testing[J]. Construction and Building Materials，2021，293：123468.
[1]	张卓然. 考虑上部荷载影响区的抗浮锚杆合理布置研究[硕士学位论文][D]. 上海：上海交通大学，2020.(ZHANG Zhuoran. Reasonable layout of anti-upliftanchors considering the upper load affected area[M. S. Thesis][D]. Shanghai：Shanghai Jiaotong University，2020.(in Chinese))
[2]	黄选明，张新江，黄广华，等. 某地下室上浮及顶板局部堆载致使结构破坏的事故分析[C]// 第28届全国结构工程学术会议论文集(第Ⅲ册). 南昌：[s. n.]，2019：331-336.(HUANG Xuanming，ZHANG Xinjiang，HUANG Guanghua，et al. Accident analysis of structural damage caused by basement float and partial loading of the roof[C]// Proceedings of the 28th National Conference on Structural Engineering(No.Ⅲ). Nanchang：[s. n.]，2019：331-336.(in Chinese))
[4]	曹洪，潘泓，骆冠勇. 地下结构截排减压抗浮概念及应用[J]. 岩石力学与工程学报，2016，35(12)：2 542-2 548.(CAO Hong，PAN Hong，LUO Guanyong. A new anti-floatation method by drainage：concept and application[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(12)：2 542-2 548.(in Chinese))
[6]	刘继国，郭小红，程勇，等. 临海浅埋富水地层明挖隧道抗浮稳定性研究[J]. 岩土工程学报，2014，36(增2)：274-278.(LIU Jiguo，GUO Xiaohong，CHEN Yong，et al. Floatation-resistant stability of open excavation tunnels in offshore shallow stratum[J]. Chinese Journal of Geotechnical Engineering，2014，36(Supp.2)：274-278.(in Chinese))
[8]	骆冠勇，马铭骏，曹洪，等. 临江地下结构主被动联合抗浮方法及应用[J]. 岩土力学，2020，41(11)：3 730-3 739.(LUO Guanyong，MA Mingjun，CAO Hong，et al. A new anti-float method for riverside underground structures：drainage corridor combined with uplift piles or uplift anchors[J]. Rock and Soil Mechanics，2020，41(11)：3 730-3 739. (in Chinese))
[11]	马鹏杰. 红砂岩中抗浮锚杆粘结力研究[硕士学位论文][D]. 衡阳：南华大学，2020.(MA Pengjie. Study on the cohesive force mecganics of anti-floating bolt in red sandstone[M. S. Thesis][D]. Hengyang：Nanhua University，2020.(in Chinese))
[12]	KOU H L，GUO W，ZHANG M Y. Pullout performance of GFRP anti-floating anchor in weathered soil[J]. Tunnelling and Underground Space Technology，2015，49：408-416.
[14]	穆锐，浦少云，黄质宏，等. 土中中风化嵌岩抗拔桩承载机制研究[J]. 长江科学院院报，2019，36(2)：116-121.(MU Rui，PU Shaoyun，HUANG Zhihong，et al. Bearing mechanism of moderately weathered rock-socketed uplift pile in soil[J]. Journal of Yangtze River Scientific Research Institute，2019，36(2)：116-121.(in Chinese))
[16]	程晔，龚维明，戴国亮，等. 软岩桩基承载性能试验研究[J]. 岩石力学与工程学报，2009，28(1)：165-172.(CHENG Ye，GONG Weiming，DAI Guoliang，et al. Research on bearing performance of socketed pile in soft rock[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(1)：165-172.(in Chinese))
[18]	梁鲜. 地下室车库底板抗浮不足分析和处理方法[硕士学位论文][D]. 长沙：湖南大学，2011.(LIANG Xian. The analysis and treatment about basement garage floor anti-floating inadequate[M. S. Thesis][D]. Changsha：Hunan University，2011.(in Chinese))
[22]	MOUZANNA H，BOST M，LEROUX M，et al. Experimental study of the shear strength of bonded concrete-rock interfaces: surface morphology and scale effect[J]. Rock Mechanics and Rock Engineering，2017，50(10)：2 601-2 625.
[24]	高永平，方玉树. 岩质基坑底板变形案例分析[J]. 地下空间与工程学报，2010，6(增1)：1 423-1 424.(GAO Yongping，FANG Yushu. Case study on the deformed footwall of rock pit[J]. Chinese Journal of Underground Space and Engineering，2010，6(Supp.1)：1 423-1 424. (in Chinese))
[26]	中华人民共和国行业标准编写组. SLT 264—2020水利水电工程岩石试验规程[S]. 北京：中国水利水电出版社，2020.(The Professional Standards Compilation Group of People?s Republic of China. SLT 264—2020 Code for rock test in water and hydropower projects[S]. Beijing：China Water Power Press，2020.(in Chinese))
[20]	白晓宇，张明义，袁海洋. 移动荷载作用下土岩组合基坑吊脚桩变形分析[J]. 岩土力学，2015，36(4)：1 167-1 173.(BAI Xiaoyu，ZHANG Mingyi，YUAN Haiyang. Deformation analysis for the end-suspended piles in the combined soil-rock foundation pits under moving loadings[J]. Rock and Soil Mechanics，2015，36(4)：1 167-1 173.(in Chinese))
[21]	田洪铭，陈卫忠，郑朋强，等. 芙蓉江大桥拱座混凝土-基岩抗滑稳定性研究[J]. 岩石力学与工程学报，2014，33(7)：1 407-1 414. (TIAN Hongming，CHEN Weizhong，ZHENG Pengqiang，et al. Sliding stability analysis of cemented concrete-rock joint between skewback and bedrock of Furongjiang bridge[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)：1 407-1 414.(in Chinese))