一种管桩植桩新型注浆工法探析
摘要:借助管桩植桩后注浆成桩、成柱在某工程解决“桩柱一体工程”的案例,分析目前各种桩基础施工的利弊,提出一种管桩植桩新型注浆工法,并分析其优势和实际操作的可行性。运用流体力学基本原理,论证这种新型注浆工法的合理性及可行性,并借此阐述该工法的运行机理、施工工艺。该工法借助管桩自有的特性及旋挖机等钻孔机械的优势,解决了管桩在硬质岩层(特别是岩溶发育地区)场地桩基础施工中遇到的难题,如成孔难、混凝土砂浆充溢系数大等问题。同时,该工法简化了管桩植入桩工法中复压或锤击的工序,也拓展大管桩(管径1.30 m以上)在植入桩中的使用范围,使桩机植入管桩简单、经济、实用和环保,为今后管桩在硬质岩,特别是在岩溶地区的推广、普及运用奠定了基础。
Abstract:Advantages and disadvantages of various pile foundation construction are analyzed, and the advantages and feasibility of a new grouting method for pipe implanted pile are proposed based on the successful case of grouting into pile and column in a certain integrated pile and column project. Based on basic principles of fluid mechanics, the rationality and feasibility of the new grouting method are demonstrated, and the operation mechanism and construction technology of the new grouting method are expounded. By virtue of the characteristics of pipe pile and the advantages of drilling machinery such as rotary excavator, this method can solve the problems of pipe pile foundation construction in hard rock stratum (especially in karst area), such as the difficulty in drilling holes and the large filling coefficient of concrete mortar. This method simplifies the pressed or hammer process in the pipe implanted pile method, and also enlarges the application scope of big pipe pile (over 1.30 m in diameter) in implanted pile. The implanted pipe pile is simple, economic, practical and environmental, and could provide basis for the popularization and application of pipe pile in hard rock, especially in karst areas in the future.
中文标题:
一种管桩植桩新型注浆工法探析
Analysis of A New Grouting Method for Pipe Implanted Pile
作者:
徐建华1,,朱斌2,杨东源3,卢炳轩4,徐乐天1
Xu Jianhua1,,Zhu Bin2,Yang Dongyuan3,Lu Bingxuan4,Xu Letian1
作者简介:徐建华,男,1962年生,汉族,辽宁沈阳人,硕士,教授级高级工程师,主要从事岩土工程设计施工工作。E-mail: 626857655@qq.com
通讯地址:
1.中城院(北京)环境科技有限公司,北京 100120 2.桂林理工大学,广西桂林 541004 3.广西壮族自治区住房和城乡建设厅,广西南宁 530023 4.广西高远建筑科技股份有限公司,广西南宁 530025
1.CUCDEEnvironmentalTechnologyCo.,Ltd.,Beijing100120,China 2.GuilinUniversityofTechnology,Guilin541004,Guangxi,China 3.DepartmentofHousingandUrban-RuralDevelopmentofGuangxiZhuangAutonomousRegion,Nanning530023,Guangxi,China 4.GuangxiGaoyuanConstructionTechnologyCo.,Ltd.,Nanning530025,Guangxi,China
中图分类号:TU 473.1
doi:10.3969/j.issn.1007-2993.2021.06.009
出版物:岩土工程技术
收稿日期:2021-03-01
刊出日期:2021-12-10
关键词:管桩,植桩,注浆,桩基础,混凝土
Key words:pipe pile,implanted pile,grouting,pile foundation,concrete
文档包含图片数量:图片(6)张
文档包含表格数量:表格(0)个
参考文献:
[1]JGJ/T 406—2017 预应力混凝土管桩技术标准[S]. 北京: 中国建筑工业出版社, 2017.
[2]JGJ/T 394—2017 静压桩施工技术规程[S]. 北京: 中国建筑工业出版社, 2017.
[3]JGJ/T 344—2014 随钻跟管桩技术规程[S]. 北京: 中国建筑工业出版社, 2014.
[4]DBJ/T 45—110—2020 植入法预制桩技术规程[S]. 南宁: 广西壮族自治区住房和城乡建设厅, 2020.
[5]广西高远建筑科技股份有限公司. 一种端头设置法兰的预制管桩: 202022405822.1[P]. 2021-07-27.
[6]广西高远建筑科技股份有限公司. 一种底部设置单向阀的预制管桩: 202022390732. X[P]. 2021-07-27.
[7]广西高远建筑科技股份有限公司. 一种管桩植桩新型注浆工法: 202011212412.3[P]. 2021-03-02.
[8]KÖRNER H J. Reichweite und Geschwindigkeit von Bergstürzen und Flieschneelawinen[J]. Rock Mechanics and Rock Engineering,1976,8(4):225-256.
[9]GB 500007—2011 建筑地基基础设计规范[S]. 北京: 中国建筑工业出版社, 2008.
[10]JGJ 94—2008 建筑桩基技术规范[S]. 北京: 中国建筑工业出版社, 2008.
基金项目:
- 文件大小:
- 870.19 KB
- 下载次数:
- 60
-
高速下载
|
|