
工程建设与设计
&DeaimPoe
浅析2D工法地基处理技术
Analysison2DConstructionMethodofFoundationProcessingTechnology
胡俊
(浙江工业大学建筑工程学院,杭州310014)
HUJun
(ZhejiangUniversityof Technology Collegeof CivilEngineeringand Architecture, Hangzhou 310014,China)
【摘要】复合地基技术在软土地基处理上已有着大量的应用研究,不同的处理技术适用于不同的条件。款基处理中最为常用的是粉喷桩复合地基,该法对于工期紧,软土性质校差的地基有着较理想的处理效果,但是粉喷桩在处理软土地基中常出现一些问题,粉喷桩与排水固结法有机地结合起来,成为一种全新的软土地基处理技术排水粉喷桩复合地基工法(简称2D工法)。比校粉喷桩处理软土地基,达种技术有效地解决了传统地基处理方法遇到的问题,现在复合地基处理技术已经日趋完善,排水粉喷桩复合地基处理技术处于起步阶段,各方面的理论都不够成熟,而且还没有很好应用于工程实践中,在以后地基处理技术的完善中一定能得到进一步的发展和广泛的应用。
[Abstract JComposite foundation in soft soil treatment technology bad already a lot of spplied research, different processing techniques is suitabeforuserin different conditions. Cementinjection pile ismostcommonlyused inthe sof ground,thismethod has an idealeffectin thetight schedule project and the poor nature ofthe soft foundation, but in dealing with soff foundation cement injection pile has some problems. Cement injection pile and drainage consolidation method organically combined into a new soft foundation processing technology -drainage cement injection pile(2D construction method).Compare with the cement injection pile, this technology effectively to solve the traditional problems encountered in the foundation approach, Composite processing technology has now become perfect foundation, drsinage cementinjection pile is in the initial stage,allaspects ofthe theory are not mature enough, but not wellused in engineeringpractice, in the future the complete technology
of foundation treatment will beableto furtherimprovethe developmentand wide application.【关键调】软土地基;粉喷桩;排水粉喷桩;固结
[Key words ]soft foundation; cementinjectionpile;drainage cement injcctionpile; consolidation
【中图分类号】TU447;TU472.32 1概念
【文献标志码]B
排水粉喷柱复合地基法(DrainandDrymixingcolumn)也称为2D工法,就是将粉喷桩与传统的排水固结法二种独立的方
【作者简介】胡俊(1980~),男,浙江杭州人,工程师,从事结构工程设计与研究,(电子信箱)tiannluo@163.com。
130
万方数据
[文章编号】1007-9467(2012)01-0130-05
法有机地结合起来,先在软土地基中设置排水板,再嵌打粉喷柱,充分利用粉喷柱施工时的侧向压力,使软土中水沿排水板排出,同时通过扩张作用增大柱周土的渗透性,利用排水固结作用,在提高粉喷柱周围土体强度的基础上更有效地提高粉
喷柱复合地基的强度。 2发展背景
复合地基技术在软土地基处理上已有着大量的应用研