ASE复合桩技术设计及试验研究
摘要:针对吹填淤泥的超软土工程性质,提出了ASE桩的概念,即沉管投入复合材料再原位扩径搅拌的施工技术。以固化细料+骨架粗料为超软土提供基本强度及骨架支撑的原理,参考搅拌桩与CFG桩的施工工艺,制作专用双塔型施工设备,尝试形成一种新的施工工艺。进行了现场初步试验,固化细料与骨架粗料的配合比较理想时,可形成较为理想的桩体。成桩质量主要受固化细料影响,骨架粗料的效果发挥需要依赖一定配合比基础的固化细料。先沉管投料再扩径搅拌的工艺是可行的,环刀型叶片能够实现扩径的效果,且双向扩径搅拌的效果要好于单向扩径搅拌的效果。ASE桩的设计计算方法及理论还需做进一步研究,可参考CFG桩与搅拌桩的相关理论开展工作,为地基处理技术的发展提供了新的思路。
Abstract:The concept of ASE pile is put forward based on the engineering properties of super soft soil filled with dredger fill, which refers to the construction technology of sinking pipe into composite material and in-situ expanding mixing. Considering the principle of providing basic strength and skeleton support for super soft soil with solidified fine material and skeleton coarse material, and referring the construction technology of mixing pile and CFG pile, a special double tower construction equipment is made and a new construction technology is formed. The field test shows that the ideal pile can be formed when the mixture of solidified fine material and skeleton coarse material is appropriate. The quality of pile forming is mainly affected by the solidified fine material, and the effect of skeleton coarse material depends on the solidified fine material of certain mix proportion foundation. It is feasible to feed the immersed tube first and then expand the diameter for stirring. The annular blade can achieve the effect of expanding the diameter, and the effect of two-way expanding stirring is better than that of one-way expanding stirring. The design and calculation method of ASE pile need to be further studied, which can refer to the relevant theories of CFG and mixing pile.
中文标题：
ASE复合桩技术设计及试验研究
Technical Design and Experimental Research of Active material-Sinking-Expanding Composite Pile
作者：
汪攀峰
Wang Panfeng
作者简介:汪攀峰,男,1985年生,安徽潜山人,硕士研究生,工程师,现从事软基处理及工程信息化方面工作与研究。E-mail:775678410@qq.com
通讯地址：
浙江明仲岩土工程技术有限公司, 浙江杭州 310015
ZhejiangMingzhongGeotechnicalEngineeringTechnologyCo.,Ltd.,Hangzhou310015,Zhejiang,China
中图分类号:TU472
doi:10.3969/j.issn.1007-2993.2021.01.013
出版物：岩土工程技术
收稿日期:2020-03-10
网络出版日期:2021-07-06
刊出日期:2021-07-06
关键词:吹填土,复合材料,沉管投料,扩径搅拌
Key words:dredger fill,composite material,immersed tube,expanding and stirring
文档包含图片数量：图片(0)张
文档包含表格数量：表格(0)个
参考文献：
基金项目：
- 文件大小:
- 2.86 MB
- 下载次数:
- 60
-
高速下载
|
|
