杭幫菜博物館地基處理方法研究
徐銓彪,干鋼,朱建才,周群建,樊啟廣
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(浙江大學(xué)建筑設(shè)計(jì)研究院, 杭州 310028)[摘要]杭州菜博物館地處西湖疏浚淤泥庫區(qū)內(nèi),十年以來建設(shè)場(chǎng)地內(nèi)吹填了大量的西湖淤泥,尚未完成自然沉積固結(jié)過程,平均深度達(dá)15m以上,該土層含水量高達(dá)249.2%,泥炭含量28.5%,屬于沼澤地范疇。為保證人員的安全和施工機(jī)械的進(jìn)入,通過真空聯(lián)合堆載預(yù)壓方法對(duì)該場(chǎng)地進(jìn)行了地基處理,并對(duì)處理過程中場(chǎng)地的地表沉降、土體水平位移、膜下真空度、孔隙水壓力、地下水位以及排水預(yù)壓出水量進(jìn)行了監(jiān)測(cè)。處理完成后進(jìn)行了土體的物理力學(xué)室內(nèi)試驗(yàn)、現(xiàn)場(chǎng)十字板剪切及靜力觸探試驗(yàn)。地基處理施工全過程各項(xiàng)數(shù)據(jù)的監(jiān)測(cè)結(jié)果表明工程地基處理的效果良好,為樁基礎(chǔ)施工、地下室開挖等奠定了良好的基礎(chǔ)。[關(guān)鍵詞]西湖淤泥庫區(qū); 真空聯(lián)合堆載預(yù)壓; 軟土地基; 地基處理; 試驗(yàn)研究及監(jiān)測(cè)中圖分類號(hào):TU472.3+3 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1002-848X(2013)15-0122-05Ground treatment technique research for Hangzhou Cuisine Museum in silt dredging areaXu Quanbiao, Gan Gang, Zhu Jiancai, Zhou Qunjian, Fan Qiguang(Architectural Design and Research Institute of Zhejiang University, Hangzhou 310028, China)Abstract: Hangzhou Cuisine Museum is located in West Lake silt dredging area, a large number of West Lake silt are filled in the construction site for ten years,but natural sedimentation and consolidation process are not completed. The average depth of the silt is 15 meters, the soil water content is as high as 249.2%, peat content of the silt is 28.5%, the construction site belongs to the swampland. In order to ensure the safety of personnel and construction machinery, the construction site is strengthened by vacuum combined with surcharge preloading technique,and the ground surface subsidence, horizontal displacement of soil, vacuum degree, pore water pressure, underground water level and water drainage preloading of the treatment process are monitored. After completion of processing the soil physical mechanics laboratory, field vane shear and static cone penetration are tested. The foundation treatment effect is good by the data of the monitoring results.Keywords: West Lake; silt dredging area; soft soils; vacuum combined with surcharge preloading; drainage consolidation; ground treatment; experimental test; monitoring作者簡介:徐銓彪,工學(xué)博士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,Email:xuqb@zuadr.com。參考文獻(xiàn)[1]浙江大學(xué)建筑設(shè)計(jì)研究院.杭幫菜博物館真空聯(lián)合堆載預(yù)壓地基處理監(jiān)測(cè)總報(bào)告[R].杭州,2010.[2]JGJ 79—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.[3]GB 50007—2011 建筑地基基礎(chǔ)設(shè)計(jì)規(guī)范[S].北京:中國建筑工業(yè)出版社,2011.[4]王炳龍,楊龍才,宮全美,等.真空聯(lián)合堆載預(yù)壓法加固軟土地基的試驗(yàn)研究[J].同濟(jì)大學(xué)學(xué)報(bào):自然科學(xué)版,2006,34(4):500-503.[5]謝曉華,周龍章,張澄博,等.真空聯(lián)合堆載預(yù)壓軟基加固機(jī)理分析及工程應(yīng)用[J].四川建筑科學(xué)研究,2010,36(5):112-116.
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