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（1 中國(guó)建筑科學(xué)研究院有限公司， 北京 100013； 2 建筑安全與環(huán)境國(guó)家重點(diǎn)實(shí)驗(yàn)室， 北京 100013；3 國(guó)家建筑工程技術(shù)研究中心， 北京 100013）

［摘要］簡(jiǎn)要介紹了真空-堆載聯(lián)合預(yù)壓法處理軟土地基的原理。對(duì)印尼某燃煤發(fā)電廠A1-1區(qū)域的地表沉降、分層沉降、膜下真空度及孔隙水壓力等現(xiàn)場(chǎng)實(shí)測(cè)數(shù)據(jù)及檢測(cè)資料進(jìn)行分析。采用分層總和法計(jì)算使用荷載作用下A1-1區(qū)域室外地面、道路及循環(huán)水管道的工后沉降。分析表明，預(yù)壓結(jié)束時(shí)A1-1區(qū)域的平均固結(jié)度小于70%，處理后地基承載力特征值為70kPa，十字板抗剪強(qiáng)度標(biāo)準(zhǔn)值為22.3kPa；使用荷載作用下A1-1區(qū)域室外地面及道路的工后沉降為383.6mm，埋深較淺的循環(huán)水管道工后沉降為382mm。地基處理效果未能達(dá)到設(shè)計(jì)要求，分析原因并給出相關(guān)處理建議。采用所提的建議后，本項(xiàng)目已順利建成并投產(chǎn)使用。

［關(guān)鍵詞］真空堆載聯(lián)合預(yù)壓法； 工后沉降； 孔隙水壓力； 固結(jié)度; 真空度

中圖分類號(hào)：文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)21-0139-05

Evaluation on treatment effect of soft soil foundation of a coal-fired power plant in Indonesia

SUN Wei1,2,3, ZHANG Xuechan1,2,3, LIU Jinbo1, WANG Yeyi1

（1 China Academy of Building Research, Beijing 100013, China; 2 State Key Laboratory of Building Safety and Built Environment, Beijing 100013, China; 3 National Engineering Research Center of Building Technology, Beijing 100013, China）

Abstract:The principle of vacuum combined with surcharge preloading method for soft soil foundation treatment was briefly introduced. The field monitoring data and measured data in the A1-1 area of a coal-fired power plant in Indonesia were analyzed, such as ground surface settlement, layered settlement, vacuum degree under the membrane, and pore water pressure. The layer-wise summation method was used to calculate the post-construction settlement of the outdoor ground, the road and circulating water pipeline in the A1-1 area under service load. The analysis shows that after soft soil foundation treatment, the average consolidation degree of A1-1 area is lower than 70% and the characteristic value of foundation bearing capacity is 70kPa and the shear strength standard value of cross plate is 22.3kPa. The  post-construction settlement of the outdoor ground and the road are 383.6mm and the post-construction settlement of the shallow buried circulating water pipeline is 382mm in the A1-1 area under service loads. The foundation treatment effect is below design requirements, and the reasons were analyzed and relevant treatment suggestions were given. After adopting the suggestions, the project has been successfully completed and put into production.

Keywords:vacuum combined with surcharge preloading method; post-construction settlement; pore water pressure; consolidation degree; vacuum degree

*國(guó)家重點(diǎn)研發(fā)項(xiàng)目（2016YFC0802008-02）。

作者簡(jiǎn)介：孫威，博士，工程師，Email:1065375645@qq.com;通信作者：張雪嬋，博士，高級(jí)工程師，Email：zdtmzhangxc@126.com。