基于强度试验的五轴水泥土搅拌桩新技术研究

赵春风; 邹豫皖; 赵程; 谢晓东; 周玉石

doi:10.11779/CJGE201402015

基于强度试验的五轴水泥土搅拌桩新技术研究 English Version

赵春风^{1, 2},
邹豫皖^{1, 2},
赵程^{1, 2},
谢晓东³,
周玉石³

1. 同济大学岩土及地下工程教育部重点实验室,上海 200092; 2. 同济大学地下建筑与工程系,上海 200092; 3. 上海城地建设股份有限公司,上海 200062 江人才计划项目（11PJ1410100）；上海市重点学科建设项目（B308

基金项目: 国家自然科学基金项目（41202193,41272295）; 上海市浦

详细信息

作者简介:
赵春风(1964- )，男，博士，教授，博士生导师，主要从事岩土工程的理论与应用方面的教学与研究工作。E-mail: tjzhchf@sohu.com。

中图分类号: TU470
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出版历程
- 收稿日期: 2013-03-31
- 发布日期: 2014-02-20

Experimental research on strength of five-axis cement-soil mixed piles

1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3.Shanghai Chengdi Construction & Development Co., LTD, Shanghai 200062, China

摘要

摘要: 针对中国国内水泥土搅拌桩施工工艺存在的问题,研究开发了五轴水泥土搅拌桩新技术。该技术在施工过程中具有机械化程度高、成本低、工期短、环境污染少等特点,为了分析五轴搅拌桩加固软土地基以及基坑围护中的处理效果,在同一场地进行了五轴水泥土搅拌桩和二轴、三轴水泥土搅拌桩取芯检测和室内无侧限抗压强度试验。试验结果表明,在各土层中,三轴水泥土搅拌桩的桩身强度值较低,且离散性较大,二轴水泥土搅拌桩的强度较好,但不同龄期的强度值离散性变化较大,而五轴水泥土搅拌桩的强度值最高,离散性也较小,具有良好的推广和应用前景。
- 五轴水泥土搅拌桩 /
- 施工工艺 /
- 取芯检测 /
- 无侧限抗压强度
Abstract: Based on a review of disadvantages of the construction techniques for cement-soil mixed piles in China, a new construction method called five-axis mixed pile method is developed. This new method has low cost, environmental pollution, short construction period and high efficiency. In order to investigate the improvement effect of five-axis mixed piles for soft ground in excavation engineering, comparison tests between five-axis mixed piles and biaxial, triaxial mixed piles are conducted in the same geological field. Through the unconfined compression tests on coring samples taken from cement-soil mixed piles, the test results show that the strength of the triaxial mixed piles is low and much more discrete, the strength of the biaxial mixed piles is better in every layer, but the discreteness of strength values greatly changes at different ages. However, the five-axis mixed piles with higher strength and low discrete behavior may have a good population and application value in the future.
- five-axis cement-soil mixed pile /
- construction technique /
- trial of drilling core /
- unconfined compressive strength

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参考文献(15)

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基于强度试验的五轴水泥土搅拌桩新技术研究 English Version

作者简介: 赵春风(1964- )，男，博士，教授，博士生导师，主要从事岩土工程的理论与应用方面的教学与研究工作。E-mail: tjzhchf@sohu.com。

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Experimental research on strength of five-axis cement-soil mixed piles

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作者简介:
赵春风(1964- )，男，博士，教授，博士生导师，主要从事岩土工程的理论与应用方面的教学与研究工作。E-mail: tjzhchf@sohu.com。