多次分段控制注浆斜向预应力钢锚管锚固机制研究

doi:10.13722/j.cnki.jrme.2019.0788

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

Download: PDF (2473 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to study the anchorage mechanisms of multi-stage control grouting inclined prestressed steel anchor pipes，it is necessary to make clear the structural form，reinforcement mechanism，scope of application and design calculation method of multi-stage control grouting inclined prestressed steel anchor pipes. Taking K42 slope of Guangzhou north third ring expressway as an objective，bearing capacity tests of prestressed steel anchor pipes with different free lengths were carried out. The effective anchorage length of prestressed steel anchor pipes was analyzed，and comparisons of the bearing capacity among prestrsssed steel anchor pipes，common anchor rods and common steel anchor pipes. The test results show that the ultimate bearing capacity of the prestressed steel anchor pipes increases by 50% than that of common anchor rods and the effective anchorage length of the prestressed steel anchor pipe is 6 m. Anchoring mechanisms of prestressed steel anchor pipes by Plaxis2D software were performed. It is shown that the improvement of the stability of landslides is not obvious by the crack grouting technology while that combination of the crack grouting technology and the prestressed steel anchor pipes plays a obvious role in enhancing the stability of landslides. The research work is of certain reference value for correct analysis of reinforcement mechanisms and engineering design application of multi-stage control grouting inclined prestressed steel anchor pipes.

Key words： slope engineering multi-stage control grouting inclined prestressed steel anchor pipes strengthening mechanism numerical analysis

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHANG Yufang1
	YUAN Kun1
	ZHANG Cailiang2
	LEI Ming3
	OU Yangsheng4

Cite this article:

ZHANG Yufang1,YUAN Kun1,ZHANG Cailiang2, et al. Study on anchoring mechanisms of inclined prestressed steel anchor pipes controlled by multi-stage grouting#br#[J]. , 2020, 39(7): 1297-1310.

URL:

http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0788 OR http://rockmech.whrsm.ac.cn/EN/Y2020/V39/I7/1297

[1]	袁坤. 多次分段控制注浆钢花管支挡加固技术的研究与应用[博士学位论文][D]. 北京：中国铁道科学研究院，2019：1-5.(YUAN Kun. Research and application of multi-section control grouting steel tube support reinforcement technology[Ph. D. Thesis][D]. Beijing：China Academy of Railway Sciences，2019：1-5.(in Chinese))
[3]	张玉芳. 高轻型支挡技术及应用[M]. 北京：科学出版社，2010：50-58.(ZHANG Yufang. High and light weight support technology and application[M]. Beijing：Science Press，2010：50-58.(in Chinese))
[4]	张玉芳. 边坡病害及治理工程效果评价[M]. 北京：科学出版社，2009：121-127.(ZHANG Yufang. Evaluation of slope diseases and treatment projects[M]. Beijing：Science Press，2009：121-127.(in Chinese))
[5]	陈达章，袁坤，万军利. 乐广高速公路K80滑坡分析与治理[J]. 铁道建筑，2017，(9)：124-127.(CHEN Dazhang，YUAN Kun，WAN Junli. Analysis and treatment of landslide in section K80 of Lechang—Guangzhou expressway[J]. Railway Construction，2017，(9)：124-127.(in Chinese))
[7]	袁坤，孟雪俊，薛斌. 预应力钢锚管加固煤系地层边坡施工技术研究[J]. 铁道建筑，2018，58(12)：104-107.(YUAN Kun，MENG Xuejun，XUE Bin. Study on the construction technology of prestressed steel anchor pipe reinforced coal measure strata slope[J]. Railway Construction，2018，58(12)：104-107.(in Chinese))
[9]	张玉芳，魏少伟，李健，等. 道路边坡灾害整治新技术及应用[C]// 2018世界交通运输大会论文集. [S. l. ]：[s. n. ]，2018：856-865.(ZHANG Yufang，WEI ShaoWei，LI Jian，et al. New technology and application of road slope disaster prevention[C]// Proceedings of the China Highway Society Conference. [S. l. ]：[s. n. ]，2018：856-865.(in Chinese))
[11]	宋方佳. 地铁工程中深孔注浆加固效果的数值模拟方法研究[硕士学位论文][D]. 北京：北京建筑大学，2015.(SONG Fangjia. The method of numerical simulation of deep hole grouping reinforcement effect in Subway Engineering[M. S. Thesis][D]. Beijing：Beijing University of Civil Engineering and Architecture，2015.(in Chinese))
[2]	徐邦栋. 高堑坡设计及病害分析与防治[M]. 北京：中国铁道出版社，2011：631-635.(XU Bangdong. Design and disease analysis and prevention of high cut slope[M]. Beijing：China Railway Publishing House，2011：631-635.(in Chinese))
[6]	朱宝龙，胡厚田，张玉芳，等. 钢管压力注浆型抗滑挡墙在京珠高速公路K108滑坡治理中的应用[J]. 岩石力学与工程学报，2006，25(2)：399-406.(ZHU Baolong，HU Houtian，ZHANG Yufang，et al. Application of steel-tube bored grouting anti-sliding retaining wall to treatment of landslide K108 in Beijing—Zhuhai expressway[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(2)：399-406.(in Chinese))
[8]	职雨风，袁坤. 某高速公路路堑顺层边坡滑动机制及处理对策分析[J]. 路基工程，2019，(1)：234-240.(ZHI Yufeng，YUAN Kun. Sliding mechanism and controlling countermeasures of bedding slope landslide in a highway[J]. Subgrade Engineering，2019，(1)：234-240.(in Chinese))
[10]	王佳，袁坤，李新伟，等. 广东高速公路路堑高边坡滑动机制分析及防治对策[J]. 铁道建筑，2019，70(12)：107-111(WANG Jia，YUAN Kun，LI Xinwei，et al. Analysis on sliding mechanism and prevention countermeasures of high cutting slope in guangdong expressway[J]. Railway Construction，2019，70(12)：107-111.(in Chinese))
[12]	刘丽，李晶，董丽艳. 强度折减有限元法在边坡设计中的应用[J]. 路基工程，2011，(5)：127-129.(LIU Li，LI Jin，DONG Liyan. Application of strength reduction finite element method in slope design[J]. Subgrade Engineering，2011，(5)：127 -129.(in Chinese))