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 (1 沈陽(yáng)工業(yè)大學(xué)建筑工程學(xué)院， 沈陽(yáng) 110870； 2 中國(guó)建筑東北設(shè)計(jì)研究院有限公司， 沈陽(yáng) 110006）

［摘要］充分考慮筏板基礎(chǔ)的特點(diǎn)，基于現(xiàn)行基礎(chǔ)設(shè)計(jì)規(guī)范相關(guān)條款和優(yōu)化設(shè)計(jì)理論，結(jié)合某高層剪力墻結(jié)構(gòu)筏板基礎(chǔ)的設(shè)計(jì)，提出了一個(gè)適合于筏板基礎(chǔ)的高效實(shí)用優(yōu)化設(shè)計(jì)方法。在筏板基礎(chǔ)優(yōu)化設(shè)計(jì)中，就筏板厚度、混凝土強(qiáng)度、鋼筋強(qiáng)度對(duì)基礎(chǔ)沉降、基底反力和基礎(chǔ)造價(jià)的影響進(jìn)行詳細(xì)的研究。實(shí)例分析表明，所提出的優(yōu)化設(shè)計(jì)方法是有效的、可行的。研究結(jié)果可為筏板基礎(chǔ)設(shè)計(jì)提供參考。

［關(guān)鍵詞］優(yōu)化設(shè)計(jì); 筏板基礎(chǔ); 最優(yōu)板厚; 基底反力; 基礎(chǔ)沉降

中圖分類號(hào)：TU375.4      文獻(xiàn)標(biāo)識(shí)碼：A     文章編號(hào)：1002-848X(2014)17-0079-04

Optimum design for the raft foundation of a high-rise building with shear-wall structure

Lu Haiyan1, Xing Tong1, Bao Wenbo1, Guo Xiao2

 (1 School of Architecture and Civil Engineering, Shenyang University of Technology, Shenyang 110870, China; 2 China Northeast Architectural Design and Research Institute, Shenyang 110006, China)

Abstract: Considering the features of raft foundation, an efficient and practical method was presented for optimum design of raft foundation based on the regulations in the current foundation design code and optimum theories combined with the raft foundation design of a high-rise shear-wall structure. The influences of raft thickness, concrete strength, reinforcement strength on foundation settlement, subgrade reaction and raft foundation cost were studied in detail. The case study shows that the proposed optimum method is efficient and feasible. The study results can provide valuable references for raft foundation design.

Keywords: optimum design; raft foundation; optimal raft thickness; subgrade reaction; foundation settlement

*國(guó)家自然科學(xué)基金重大研究計(jì)劃“重大工程的動(dòng)力災(zāi)變”重點(diǎn)項(xiàng)目“超高層建筑的動(dòng)力失效模式及抗災(zāi)-分災(zāi)優(yōu)化設(shè)計(jì)研究（90815023）。

作者簡(jiǎn)介：陸海燕，博士，講師，一級(jí)注冊(cè)結(jié)構(gòu)工程師， Email：tong_ke@126.com。

參考文獻(xiàn)

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[2]KYUNG NAM KIM, SU-HYUNG LEE, KI-SEOK KIM, et al. Optimal pile arrangement for minimizing differential settlements in piled raft foundations [J]. Computers and Geotechnics，2001, 28(4): 235-253.

[3]周正茂，趙福興，侯學(xué)淵.樁筏基礎(chǔ)設(shè)計(jì)方法的改進(jìn)及其經(jīng)濟(jì)價(jià)值[J].巖土工程學(xué)報(bào)，1998,20(6)：70-73.

[4]李海峰，陳曉平.高層建筑樁筏基礎(chǔ)優(yōu)化設(shè)計(jì)研究[J].巖土力學(xué)，1998，19(3):59-64.

[5]王紅雨，楊敏.樁筏基礎(chǔ)分析方法與優(yōu)化設(shè)計(jì)對(duì)策[J].建筑結(jié)構(gòu)，2005，35(11)：69-72

[6]孫峰，孔紀(jì)名，王杰，等.考慮共同作用下的筏板基礎(chǔ)厚度的設(shè)計(jì)方法研究[J].四川建筑科學(xué)研究，2012，38(5):93-97.