管井降水預壓聯(lián)合“輕夯多遍”軟土地基處理試驗
劉寶臣1,謝艷華1,張炳暉1, 向志坤1,吳名江2
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管井降水預壓聯(lián)合“輕夯多遍”軟土地基處理試驗劉寶臣1,謝艷華1,張炳暉1, 向志坤1,吳名江2 (1 桂林理工大學土木與建筑工程學院, 桂林 541004; 2 江蘇興億達建設(shè)有限公司, 南通 226200)[摘要]結(jié)合青島港前灣港填海軟基加固工程,對管井降水聯(lián)合“輕夯多遍”地基處理新工藝加固填海軟基進行現(xiàn)場試驗研究。以青島港前灣港四期工程1#~4#泊位的3個試驗區(qū)為例,采用3種不同的試驗參數(shù)進行施工,通過對試驗前后各項檢測數(shù)據(jù)進行整理和對比分析,證明了此新工藝對加固填海軟基是有效可行的,同時對試驗中3個試驗區(qū)的加固效果進行比較,得出了相對優(yōu)化的施工參數(shù),進一步完善了該套工藝的技術(shù)參數(shù)。[關(guān)鍵詞]管井降水;輕夯多遍;軟土地基加固;強夯中圖分類號:TU472.31,TU463文獻標識碼:A文章編號:1002-848X(2011)01-0118-04Experiment on soft foundation treatment by using tube well dewatering associate with ‘low-power re-ram’Liu Baochen1, Xie Yanhua1, Zhang Binghui1, Xiang Zhikun1, Wu Mingjiang2(1 Civil Engineering College, Guilin University of Technology, Guilin 541004, China;2 Xingyida Construction Co., Ltd., Nantong 226200, China)Abstract:Using the Bay of Qingdao Port 1#~4# berths sea reclamation soft foundation consolidation as an example, a site test about tube well dewatering associate with ‘low-power re-ram’ to deal with reclamation of soft foundation was introduced. Different experimental parameters are adopted in three experimental zones proposed. By comparing and analyzing tryout test data before and after the treatment, the technology that deals with reclamation of soft foundation is confirmed tobe feasible and effective. At the same time, optimizations of construction parameters have been proposed through comparing the effect of reinforcement, which can serve as a reference for similar engineerings.Keywords:tube well dewatering; low-power re-ram; soft foundation strengthening; strong ram*廣西建筑工程檢測與試驗重點實驗室開放基金(001102208041)巖溶區(qū)樁基礎(chǔ)的三維動力特性分析(桂科自0728220),水泥攪拌法對有機質(zhì)污染紅粘土地基的加固機理及工程應用研究(桂科能07109005-08)。作者簡介:劉寶臣,教授,碩士生導師,Email:lllbch@163.com。參考文獻[1]呂秀杰,龔曉楠,李建國. 強夯法施工參數(shù)的分析研究[J].巖土力學,2006,27(9):1628-1632.[2]蔡波. 強夯法在處理飽和粉煤灰地基中的應用[J].港工技術(shù),2007,10(5):41-43.[3]周健,史旦達,賈敏,等. 低能量強夯法加固粉質(zhì)黏土地基試驗研究[J].巖土力學,2007,28(11):2359-2364.[4]石蹈波. 強夯法加固地基機理分析[J].中國農(nóng)村水利水電,2006(9):98-99,102.[5]劉洋,曾遠.真空降水聯(lián)合低能量強夯在加固大面積吹填土路基中的應用[J].工業(yè)建筑,2007,37(9):793-796.[6]劉國軍.強夯法在填海造地工程中的試驗研究[J].土工基礎(chǔ),2008,22(3):8-10.[7]林宗元.巖土工程治理手冊[M].北京:中國建筑工業(yè)出版社,2005.[8]林宗元.巖土工程試驗檢測手冊[M].北京:中國建筑工業(yè)出版社,2005.