Application of micro-piles in reinforcment of soft soil area
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摘要: 以软土地区某建筑物的加固设计和施工为例,结合第三方监测数据,详细分析了某工程建筑物沉降及倾斜发生的原因。通过对某工程的微型桩加固设计及施工工艺方法描述,提出了针对软土地区地基处理及地基基础加固施工方案的建议。该工程微型桩复合桩基加固方案,加固效果良好,有效控制了建筑物的后期沉降,且施工工艺简单,经济性突出,可为类似加固、纠倾工程提供参考,对软土地区地基处理及加固施工有一定的指导意义。Abstract: The design and construction of strengthening of a building in soft soil area is taken as an example. The reasons for the settlement and the inclination of this project are analyzed in combination with the monitoring data by the Third Party. Through the description of the design and construction of micro-pile reinforcement, some suggestions for the foundation treatment and consolidation in the soft soil area are provided. The reinforcement effect of micro-pile composite foundation is very good, which can effectively control the post-construction settlement. Besides, the construction technology is simple and economic. The results may provide references for the similar reinforcement and projects deflection rectification. Furthermore, they can supply guidance for the foundation treatment in soft soil area.
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Keywords:
- micro-pile /
- soft soil foundation /
- composite pile foundation /
- foundation treatment
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[1] JGJ123—2012既有建筑地基基础加固技术规范[S]. 北京: 中国建筑工业出版社, 2012. (JGJ123—2012 Technical code for improvement of soil and foundation of existing buildings[S]. Beijing: China Building Industry Press, 2012. (in Chinese)) [2] JGJ94—2008建筑桩基技术规范[S]. 北京: 中国建筑工业出版社, 2008. (JGJ94—2008 Technical code for building pile foundations[S]. Beijing: China Building Industry Press, 2008. (in Chinese)) [3] JGJ 79—2012建筑地基处理技术规范[S]. 北京: 中国建筑工业出版社, 2002. (JGJ 79—2012 Technical code for ground treatment of buildings[S]. Beijing: China Building Industry Press, 2012. (in Chinese)) [4] GB 50007—2011建筑地基基础设计规范[S]. 北京: 中国建筑工业出版社, 2002. (GB 50007—2011 Code for design of building foundation[S]. Beijing: China Building Industry Press, 2011. (in Chinese)) [5] GB 50300—2013建筑工程施工质量验收统一标准[S]. 北京: 中国建筑工业出版社, 2013. (GB 50300—2013 Unified standard for constructional quality acceptance of building engineering[S]. Beijing: China Building Industry Press, 2013. (in Chinese)) [6] 减沉复合桩基在软土地区的工程应用研究[J]. 建筑科学, 2016(增刊). (Engineering application research on composite pile foundation for reducing subsidence in soft soil area[J]. Building Science, 2016. (in Chinese))
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