- 摘 要
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（1 浙江大學(xué)，杭州 310027； 2 浙江工業(yè)大學(xué)建筑規(guī)劃設(shè)計研究院，杭州 310014）
［摘要］樁基按現(xiàn)行《建筑地基基礎(chǔ)設(shè)計規(guī)范》(GB50007—2002)計算的沉降量與實測值相差很大，主要是深層土的壓縮模量定值由于土的擾動等原因造成實驗室與現(xiàn)場實際相差很大。根據(jù)試樁數(shù)據(jù)，分析得出接近于真實的樁底土壓縮模量，用此值作為計算依據(jù)能較準(zhǔn)確預(yù)測建筑物沉降量。當(dāng)計算群樁某點的沉降量時，若每個樁對該點的水平距離已知，根據(jù)規(guī)范就可算得該點樁底以下中垂線各點土的附加壓應(yīng)力。當(dāng)計算點離樁距離較遠(yuǎn)時，距離計算點相近的多個樁，可用多個樁平均距離計算。按文中計算方法得到的沉降計算值與工程實測所得的沉降量符合很好。
［關(guān)鍵詞］沉降；試樁；附加壓力
Calculation method of pile group settlement based on static load test
Tang Wuhua1, Yun Bo２, Wang Jingmin２, Zhou Xiaoyue２（1 Zhejiang University, Hangzhou 310027, China; 2 Zhejiang University of Technology Architecture Planning and Design Institute, Hangzhou 310014, China）
Abstract:There is a large difference between the code calculating settlement and the actual one because the compression modulus is not true due to the soil disturbance. Based on the pile test data, it can come closer to the real soil modulus, and this value can be used to forecast more accurate building settlement. When calculating the settlement of a point among the piles, if the distance of each pile to the calculating point is known, the vertical additional soil stress under the calculating pile can be got. The average distance can be used when the piles are far from the calculating point. The calculating results accord well with the test data.
Keywords:settlement; pile-testing; additional stress
作者簡介：湯武華，Email:tongwoohwa@tom.com。
參考文獻(xiàn)
［1］張世民，張忠苗，魏新江. 小高層建筑剛?cè)釓?fù)合樁設(shè)計［J］.建筑結(jié)構(gòu)，2006，36(4).
［2］單玉川，鄭學(xué)斌. 論樁基的沉降量［J］. 建筑結(jié)構(gòu)，2001，31（10）.
［3］單玉川，應(yīng)義淼. 長樁持力層下有較弱下臥層時的基礎(chǔ)沉降［J］. 建筑結(jié)構(gòu)，2003，33(7).
