廣東科學(xué)中心巖土工程問題及治理對策
張建林1,張季超2,劉晨2,朱超2
- 摘 要
-
1 廣東科學(xué)中心,廣州 510006; 2 廣州大學(xué)土木工程學(xué)院,廣州 510006)[摘要]廣東科學(xué)中心位處廣州市東南,整體地勢偏低,屬河漫灘地貌。場地軟土層厚度較大,淤泥含水量高,抗震性能差,滲透性較好。結(jié)合廣東科學(xué)中心建筑工程,根據(jù)已有資料和工程實踐,在場地處理總體構(gòu)思方案中分析了存在的巖土工程問題,選擇了最優(yōu)的軟土地基處理方案,提出了分區(qū)處理的方式,即在堆載預(yù)壓區(qū)運用創(chuàng)新性的處理方法“吹砂填淤、填土擠淤”,在動力排水固結(jié)區(qū)運用“少擊多遍,逐級加能”的方法,通過現(xiàn)場試驗證明該方法成功地解決了工程建設(shè)中存在的巖土工程問題,為主體工程施工提供了保證。[關(guān)鍵詞]巖土工程;分區(qū);堆載預(yù)壓;動力排水固結(jié)法;軟土地基;處理Geotechnical engineering problems and the countermeasures in Guangdong Science Center projectZhang Jianlin1, Zhang Jichao2, Liu Chen2, Zhu Chao2(1 Guangdong Science Center, Guangzhou 510006, China; 2 School of Civil Engineering, Guangzhou University, Guangzhou 510006, China)Abstract:The overall topography of Guangdong Science Center is low,and belongs to the flood landforms. The soft soil field is thick, the moisture content of silt is high. The seismic performance is bad, and the permeability is good. Based on the construction projects of GDSC and the strength of the domestically available data in geotechnical engineering, the analysis had been done about the main environmental geological engineering problems in foundation treatment scheme. The most excellent soft ground treatment program had been chosen. The method of partitioned treatment was developed and applied in the civil engineering, which the creative method is called “filling sand with dynamic compaction, filling soil with squeezing silt” in preloading area, and the other method is called “less hit but many times, step by step add energy level” in dynamic drainage consolidation area. It successfully solves the silt problems existing in the construction of GDSC though field tests, and offers protection to main construction.Keywords:environmental geotechnical problem; partitioned treatment; preloading; dynamic drainage consolidation; soft ground廣東省科技計劃項目(2004B10101048),(2005A11601014),(2006B37301009);建設(shè)部科技計劃項目(2005K148),(2006K301),(2007K309)。作者簡介:張建林(1961),學(xué)士,高級工程師,Email:jsb84722230@163com。參考文獻[1]易和,張季超.廣東科學(xué)中心建設(shè)與管理研究——建筑篇[M].北京:科學(xué)出版社,2008.[2]張季超.地基處理[M].北京:高等教育出版社,2009.[3]廣州市地質(zhì)勘察基礎(chǔ)工程公司.廣東科學(xué)中心地質(zhì)詳細勘察報告[R].勘察號:190022-KJ.2004.[4]GB79—2002建筑地基處理技術(shù)規(guī)范[S].北京:中國建筑工業(yè)出版社,2002.[5]GB50007—2002建筑地基基礎(chǔ)設(shè)計規(guī)范[S].北京:中國建筑工業(yè)出版社,2002.[6]劉健,閻士民,賈興安.徐州市環(huán)境巖土工程問題及防治對策[J].地質(zhì)災(zāi)害與環(huán)境保護,2008,(12).[7]曾華健,張季超.強夯法處理廣東科學(xué)中心軟弱地基的試驗研究[J].廣州大學(xué)學(xué)報,2005,(3).
[8]張季超,曾華健.廣東科學(xué)中心飽和淤泥質(zhì)砂土地基預(yù)處理技術(shù)的研究與應(yīng)用[J].廣州大學(xué)學(xué)報,2007,(6).