振冲桩在地连墙码头后方薄层砂基处理中的应用  

Application of Vibroflotation Pile in Treatment of Thin-layer Sand Base at Rear of Berth Structure Supported on Concrete Diaphragm Wall

作　　者：魏勇[1] 刘爱国[2] Wei Yong Liu Aiguo(Tiaujin Deep Foundation Engineering Co., Ltd., Tianjin 300222, China CCCC First Harbor Consultants Co., Ltd., Tianjin 300222, China)

机构地区：[1]天津深基工程有限公司,天津300222 [2]中交第一航务工程勘察设计院有限公司,天津300222

出　　处：《港工技术》2017年第2期93-96,共4页Port Engineering Technology

摘　　要：地下连续墙板桩码头后方拉杆以上部分均以回填砂土为主,但由于回填厚度较薄,一般厚度为2~3 m,为了达到设计要求的承载力并满足码头使用要求,且在地震设防烈度下不液化,经多方案必选优化,选择加填料的双点共振密实法对薄层砂基进行地基处理方案。通过双点共振振冲桩处理码头后方回填薄层粉细砂基的施工工艺介绍,为以后类似工程推广应用提供了参考,具有很好的经济效益和社会效益。Underground continuous wall sheet pile wharf above the rod part are mainly to backfill sand, but due to backfill thickness thinner, in order to achieve the design requirements of the bearing capacity and meet the requirement of dock and in seismic fortification intensity liquefaction, the mandatory scheme optimization, filled double resonance compacting method of thin sand base foundation treatment plan. By vibro pile wharf treatment before backfill construction technology of thin sand ground introduction, provides the reference for future similar engineering application, and has good economic benefit and social benefit.

关 键 词：薄层粉细砂地基 双点共振振冲桩工艺 地基处理 

分 类 号：TU473.1[建筑科学—结构工程]