成都地區(qū)超高層建筑砂卵石土地基承載力取值探討
譚方，吳帥，黃宗芳，陳哲
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譚方，吳帥，黃宗芳，陳哲（廣州市住宅建筑設(shè)計院有限公司， 廣州 510623）［摘要］以成都熊貓城二期為例，通過原位平板荷載試驗，并結(jié)合數(shù)值分析結(jié)果，探討了合理確定地基承載力的方法,通過增加抗浮錨桿提高超載，修正后的承載力可滿足設(shè)計要求。用原位試驗的變形模量計算建筑物的沉降量，經(jīng)成都地區(qū)經(jīng)驗修正后，接近實測值且平均沉降量較小。天然基礎(chǔ)的成功應(yīng)用可為類似工程提供參考。［關(guān)鍵詞］砂卵石土； 地基承載力； 深寬修正； 超載中圖分類號：TU4711+5文獻(xiàn)標(biāo)識碼：A文章編號：1002848X(2013)11003003Discussion on ground bearing capacity of the sandy pebble in the foundation of tall buildings in Chengdu areaTan Fang, Wu Shuai, Huang Zongfang, Chen Zhe (Guangzhou Residential Architectural Design Institute Co., Ltd., Guangzhou 510623, China)Abstract:Taking the actual case of Chengdu Panda City Ⅱ as an example, based on the insitu plate loading tests and numerical analysis results, the reasonable determination method of ground bearing capability was discussed. The overcharge was improved through increasing the numbers of antifloating anchor, so revised bearing capacity can meet the design requirement. The deformation modulus from the insitu plate loading tests was used to calculate the settlement. Modified by the experience in Chengdu area, the calculation results agree well with the measured settlements and the average settlement is small. The successful application of shallow foundation is beneficial to apply to similar projects.Keywords:sandy pebble; ground bearing capability; depth and width revision; overcharge作者簡介：譚方，碩士，一級注冊結(jié)構(gòu)工程師，注冊土木工程師（巖土），Email:tanfang@rfchina.com。參考文獻(xiàn)［1］GB 50007—2011 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,2012.［2］張在明.北京地區(qū)高層和大型公用建筑的地基基礎(chǔ)問題［J］.巖土工程學(xué)報,2005,27(1):1123.［3］VESIC A S. Bearing capacity of shallow foundations, Foundation Engineering Handbook［M］. New York: Van Nostrand Reinhold, 1975,121147.［4］DB51/T 5026—2001 成都地區(qū)建筑地基基礎(chǔ)設(shè)計規(guī)范［S］. 2001.［5］趙躍平，蘇森.成都地區(qū)卵石土地基承載力的研究［J］.四川建筑,1993,2:1418.［6］JGJ 6—2011 高層建筑筏形與箱形基礎(chǔ)技術(shù)規(guī)范［S］.北京:中國建筑工業(yè)出版社,2011.［7］蔣鵬，藍(lán)敏.成都市區(qū)卵石土地基變形特征定量分析［J］.地質(zhì)災(zāi)害與環(huán)境保護(hù),1995,6(4):3337.
