6/29/2025, 1:24:32 AM 星期日
Application of SMW piles in a foundation pit project in the complex surrounding environment and the hard soil area
Author:
Affiliation:

1.Shandong Provincial Lunan Geo-engineering Exploration Institute, Jining Shandong 272100, China;2.Shandong Provincial Hualu Engineering Corporation, Jining Shandong 272100, China

Clc Number:

TU473.2

  • Article
  • | |
  • Metrics
  • |
  • Reference [13]
  • |
  • Related [20]
  • | | |
  • Comments
    Abstract:

    The SMW construction method has the advantages of simple construction process, economic reliability, high applicability and less environmental pollution. Since it was introduced from abroad, it has been widely used in the coastal soft soil areas of our country, but it is rarely used in the inland hard soil areas, and the standards and specifications are not well developed with some requirements remained controversial. This paper introduces the application and improvement of SMW piles in a foundation pit project in the complex surrounding environment in southwest Shandong, summarizes some problems that may be encountered in the process of design and construction, and puts forward corresponding solutions. It is more economical and reliable to use the method in the medium-sized foundation pit project where the surrounding environment is complex, the space for sloping is limited, and environmental protection requirements is strict. Since different software may lead to different calculation results in some degree, locally recognized software should be selected for the design stage with the appropriate model and parameters for calculation, and the calculation results are then optimized according to experience. The cement content and the water cement ratio for SMW piles directly affect the strength, uniformity and flow plasticity of cement-soil mixture, hence the difficulty and quality of steel construction, as well as the water sealing effect of the cement-soil curtain wall. But there is no unified standard for the hard soil area; thus, testing is necessary to obtain the optimum mixing ratio according to the actual site conditions.

    Reference
    [1] 曾定帮,彭振斌,彭文祥.土钉与桩锚相结合复合支护在深基坑中的应用[J].探矿工程(岩土钻掘工程),2005,32(7):33-35.ZENG Dingbang, PENG Zhenbin, PENG Wenxiang. Application of support combined soil nail with pile anchor in a deep foundation pit[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling), 2005,32(7):33-35.
    [2] 赵慎中,宋珪,江建华.二次注浆复合土钉墙在超深基坑支护中的应用[J].探矿工程(岩土钻掘工程),2012,39(11):51-53.ZHAO Shenzhong, SONG Gui, JIANG Jianhua. Application of secondary grouting composite soil nailing wall in deep foundation pit bracing[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling), 2012,39(11):51-53.
    [3] 应惠清.深基坑支护结构和施工新技术[J].施工技术,2013,42 (13):1-5.YING Huiqing. New support structure and construction technology of excavation engineering[J]. Construction Technology, 2013,42(13):1-5.
    [4] 刘文峰. 微型钢管桩在基坑支护中的应用[J].探矿工程(岩土钻掘工程),2020,47(10):67-71.LIU Wenfeng. Application of the steel pipe micro-piles in foundation pit support[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling), 2020,47(10):67-71.
    [5] 贺浩,龚艳霞,胡俊.SMW工法桩在荆州基坑支护中的设计与应用[J].探矿工程(岩土钻掘工程),2020,47(9):70-74,89.HE Hao, GONG Yanxia, HU Jun. Design and application of SMW method in foundation pit support in Jingzhou[J]. Exploration Engineering (Rock & Soil Drilling and Tunneling), 2020,47(9):70-74,89.
    [6] 谷淡平,凌同华.悬臂式型钢水泥土搅拌墙的水泥土承载比和墙顶位移分析[J].岩土力学,2019,40(5):1957-1965.GU Danping, LING Tonghua. Analysis of bearing ratio of cement soil and displacement at the top of wall for soil mixing wall construction method of cantilever type[J]. Rock and Soil Mechanics, 2019,40(5):1957-1965.
    [7] 陈德美.内插H型钢水泥土搅拌桩墙在佳阳大厦基坑支护中应用与研究[D].南昌:南昌大学,2012.CHEN Demei. Application and research of H-shaped steel cement soil mixing pile wall in foundation pit support of Jiayang Building[D]. Nanchang: Nanchang University, 2012.
    [8] 陈国华.基坑围护结构技术方案经济性分析[J].中国市政工程,2011(2):62-64.CHEN Guohua. On economy analysis of technique plan for foundation pit envelop structure[J]. China Municipal Engineering, 2011(2):62-64.
    [9] 梁志荣,李忠诚.型钢水泥土连续墙在基坑工程应用中的关键问题及新发展[J].岩土工程学报,2010,32(S1):290-296.LIANG Zhirong, LI Zhongcheng. Key problems and new development of soil mixed walls in excavation engineering[J]. Chinese Journal of Geotechnical Engineering, 2010,32(S1): 290-296.
    [10] JGJT 199—2010,型钢水泥土搅拌墙技术规程[S].JGJT 199—2010, Technical specification for soil mixed wall[S].
    [11] 梁志荣,李忠诚,刘江.水泥土搅拌桩取芯与取浆两种强度检测分析[J].岩土工程学报,2010,32(S1):435-439.LIANG Zhirong, LI Zhongcheng, LIU Jiang. Strength analysis on soil-cement mixed piles by trials of drilling core and taking soil-cement grout[J]. Chinese Journal of Geotechnical Engineering, 2010,32(S1):435-439.
    [12] 梁志荣,李忠诚,刘江,等.三轴水泥土搅拌桩强度分析及试验研究[J].地下空间与工程学报,2009,5(S2):1562-1567.LIANG Zhirong, LI Zhongcheng, LIU Jiang, et al. Strength analysis and experimental research on soil-cement mixed pile made by triaxial stirring machine[J]. Chinese Journal of Underground Space and Engineering, 2009,5(S2):1562-1567.
    [13] JGJ 120—2012,建筑基坑支护技术规程[S].JGJ 120—2012, Technical specification for retaining and protection of building foundation excavations[S].
    Cited by
    Comments
    Comments
    分享到微博
    Submit
Get Citation
Share
Article Metrics
  • Abstract:735
  • PDF: 728
  • HTML: 1239
  • Cited by: 0
History
  • Received:December 17,2020
  • Revised:July 23,2021
  • Adopted:April 21,2021
  • Online: October 28,2021
  • Published: October 10,2021
Article QR Code