预置管法静力触探检测水泥搅拌桩现场试验

李国维; 姜微; 吴玉财; 魏曙红; 罗增益; 戴剑

预置管法静力触探检测水泥搅拌桩现场试验 English Version

李国维^{1, 2},
姜微^{1, 2},
吴玉财³,
魏曙红⁴,
罗增益⁵,
戴剑^{1, 2}

1. 河海大学岩土力学与堤坝工程教育部重点实验室，江苏南京210098；2. 河海大学岩土工程科学研究所，江苏南京210098；3. 广东肇阳高速公路有限公司，广东广州510850；4. 安徽省地勘局第二水文工程地质勘查院，安徽芜湖 241000；5. 河海大学地球科学与工程学院，江苏南京210098

基金项目: 江苏省自然科学基金项目（BK2011747）；广东省交通厅科技项目（201102017）

详细信息

作者简介:
李国维(1964- )，男，黑龙江大庆人，博士，副研究员，主要从事软基路堤变形、高边坡稳定的研究工作。E-mail: lgwnj@163.com。

中图分类号: TU472
计量
- 文章访问数: 373
- HTML全文浏览量: 0
- PDF下载量: 420
出版历程
- 收稿日期: 2012-09-20
- 发布日期: 2013-07-16

Field tests on detecting cement mixing piles by static cone penetration tests in reserved hole

LI Guo-wei^{1, 2},
JIANG Wei^{1, 2},
WU Yu-cai³,
WEI Shu-hong⁴,
LUO Zeng-yi⁵,
DAI Jian^{1, 2}

1. Key Laboratory of Ministry of Education for Geotechnique and Embankment Engineering, Hohai University, Nanjing 210098, China; 2. Geotechnical Research Institute, Hohai University, Nanjing 210098, China; 3. Guangdong Zhaoyang Expressway Co., Ltd., Guangzhou 510850, China; 4. The Second Hydrological and Geological Prospecting Institute, Geological Prospecting Bureau, Wuhu 241000,China; 5. School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China

摘要

摘要: 水泥搅拌桩是软土地基加固常用的方法，桩体检测是其中的质量控制环节，现行规范以抽芯检测作为指定方法。针对抽芯检测法周期长、造价高、效率低的问题，通过现场及室内实验进行了水泥搅拌桩质量快速检测方法的研究。研究表明，预置管法静力触探可以实现对水泥搅拌桩体连续检测的目标；不同土层7 d龄期的静力触探锥尖阻力与芯样28 d强度具有良好的线性相关性，线性参数随土体中黏粒含量的提高而减小；试桩阶段采用锥尖阻力联合钻孔芯样抗压强度制定静力触探法检测标准曲线，形成施工阶段水泥搅拌桩的快速检测标准，达到缩短检测工期，提高检测速度，降低检测造价，提高检测结果可靠性的目标。
- 搅拌桩 /
- 预置导管 /
- 静力触探 /
- 取芯
Abstract: The method of cement mixing pile (CMP) is often used to improve soft soil foundation. CMP quality detection is important to evaluate the effect of foundation improvement. As the specified method for the current code of China government, coring has the shortages of long cycle, high cost and low efficiency. The method of quick quality detection is studied though field and laboratory tests. The results show that the method of static cone penetration tests in the reserved hole can detect the quality of CMP continuously. The tip resistance in the 7th day has good linear relationship with the unconfined compressive strength in the 28th day. The linear parameters decrease with the increase of clay particles content. The tip resistance of static cone penetration combining with the unconfined compressive strength of core samples makes the standard curve and forms the rapid detection methods for CMP. The proposed method can shorten the time, accelerate the speed, reduce the cost and improve the reliability of the test results.
- cement mixing pile /
- reserved pile /
- static cone penetration /
- coring

HTML全文

参考文献(1)

[1]

冶金工业部建筑研究总院. 软土地基深层搅拌加固法技术规程(YBJ 225—91)[M].北京:冶金工业出版社, 1991.(Central Research Institute of BuildingConstruction. Ministry of metallurgical industry. Technical specification for deep mixing technique to consolidate soft soils(YBJ 225-91)[M].Beijing:Metallurgical Industry Press, 1991. (in Chinese))
JGJ79—2002建筑地基处理技术规范[S]JGJ79—2002建筑地基处理技术规范[S].北京:中国建筑工业出版社, 2002.(JGJ79—2002 Technical code for ground treatment of buildings[S]Building Press,2002
宋刚,彭苓. 静力触探在浆喷桩和粉喷桩质量检验中的探讨[J]. (路基工程), 2009(2): 171-173.(SONG Gang,PENG Ling. Discussion on the application of the cone penetration test in the quality detection of dry jet mixing and deep stirring guniting pile[J]. Subgrade Engineering, 2009(2): 171-173. (in Chinese))
石名磊,朱森林,张小端,等. 关于水泥系深层搅拌桩检测的探讨[J]. (重庆交通学院学报), 2000, 19(3): 63-64.(SHI Ming-lei,ZHU Sen-lin,ZHANG Xiao-duan,et al. The test method and application of cement-mixed column by DMM[J]. Journal of Chongqing Jiaotong Institute, 2000, 19(3): 63-64. (in Chinese))
杨龙才,张师德. 水泥土搅拌桩质量检测试验研究[C]// 复合地基理论与实践研讨会论文集.杭州:浙江大学出版社, 1996(YANG Long-cai,ZHANG Shi-de. Research on quality detection of cement mixing pile[C]// Composite Foundation Theory and Practice Conference.Hangzhou:Zhejiang University Press, 1996. (in Chinese))
盛海洋,刘少杰,李红旗. 触探法检测水泥粉喷桩的几个问题[J]. (山东建筑工程学院学报), 1999, 14(1): 21-25.(SHENG Hai-yang,LIU Shao-jie,LI Hong-qi. Some isseus on detecting the cement throwing pile by sounding method[J]. Journal of Shandong Institute of Architecture and Engineering, 1999, 14(1): 21-25. (in Chinese))
万兴春. 喷粉搅拌桩桩体质量检测方法探讨[J]. (安徽建筑), 2007(5): 175-176.(WANG Xing-chun. Approach to quality inspection of dry jet mixing pile[J]. Anhui Architecture, 2007(5): 175-176. (in Chinese))
江苏省高速公路建设指挥部. 江苏省高速公路水泥搅拌桩检测工作实施细则[R]. 南京: 江苏省高速公路建设指挥部, 2003.(Expressway Construction Headquarters of Jiangsu Province. The detailed rules for the implementation of Jiangsu province highway cement mixing pile detection[R]. Nanjing: Expressway Construction Headquarters of Jiangsu Province, 2003. (in Chinese))
LIU Song-yu. Determination and evaluation of strength characteristics of dry jet mixing[J]. Journal of Southeast University(English Edition), 2002, 18(1): 84-87.
董邑宁,徐日庆,龚晓南. 固化剂ZDYT-1加固土试验研究[J]. (岩土工程学报), 2001, 23(4): 472-475.(DONG Yi-ning,XU Ri-qing,GONG Xiao-nan. The experimental research of the clay stabilized with solidified agent ZDYT-1[J]. Chinese Journal of Geotechnical Engineering, 2001, 23(4): 472-475. (in Chinese))