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(gad 杰地設(shè)計(jì).浙江綠城建筑設(shè)計(jì)有限公司,杭州 310007)

摘要: 對(duì)規(guī)范中抗液化措施的適用性進(jìn)行了討論，指出了現(xiàn)有基于震陷量的抗液化研究的不足。提出了考慮場(chǎng)地液化等級(jí)、差異震陷引起的局部?jī)A斜、建筑抗震設(shè)防類(lèi)別的抗液化法，提出了局部?jī)A斜控制值 Tk 。用有限元法分析了差異震陷對(duì)樓層側(cè)移和構(gòu)件內(nèi)力的影響，結(jié)果表明，框架結(jié)構(gòu)達(dá)到中等破壞對(duì)應(yīng)的局部?jī)A斜約 0.009 2，剪力墻結(jié)構(gòu)達(dá)到中等破壞對(duì)應(yīng)的局部?jī)A斜約 0.007 7，與局部?jī)A斜控制值較為吻合。介紹了抗液化法在某不均勻液化場(chǎng)地的工程應(yīng)用，通過(guò)計(jì)算差異震陷，對(duì)不同樓棟采取了不同的抗液化措施，并對(duì)地基處理方案進(jìn)行了比較和優(yōu)化，彌補(bǔ)了規(guī)范關(guān)于不均勻液化場(chǎng)地選取抗液化措施的不足，可供其他項(xiàng)目參考。

關(guān)鍵詞: 不均勻液化場(chǎng)地； 差異震陷； 局部?jī)A斜； 抗液化設(shè)計(jì)

中圖分類(lèi)號(hào):TU973+. 35 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2022)19-0060-06

DOI:10.19701 / j.jzjg.gad2204

Research and applications of anti-liquefaction design considering differentialseismic subsidence for uneven liquefaction site

ZHANG Ganglei,WU Yingdong,YE Anjie

(gad.Zhejiang Greenton Architectural Design Co. ,Ltd. ,Hangzhou 310007,China)

Abstract: The applicability of anti-liquefaction measures in codes was discussed,the deficiencies of existinganti-liquefaction study based on seismic subsidence was pointed out. An anti-liquefaction measure considering siteliquefaction grade,local tilt caused by differential seismic subsidence,seismic fortification category of buildings waspresented,and the controlled value of local tilt Tk was suggested. The influence of differential seismic subsidence on thedisplacement of floor and the internal force of components was analyzed by finite element method,the results show that thelocal tilt corresponding to the moderate failure of frame structure is about 0.009 2,the local tilt corresponding to themoderate failure of shear wall structure is about 0.007 7,which match the controlled value of local tilt roughly. Theengineering application of anti-liquefaction method in an uneven liquefaction site was introduced,different anti-liquefactionmeasures were taken in different buildings by calculating differential seismic subsidence,foundation treatment schemes werecompared and optimized. It makes up for the deficiencies in the specification regarding the selection of anti-liquefactionmeasures for uneven liquefaction sites,and can be used as a reference for other projects.

Keywords:uneven liquefaction site； differential seismic subsidence； local tilt； anti-liquefaction design

第一作者:章鋼雷，碩士，高級(jí)工程師，主要從事建筑結(jié)構(gòu)設(shè)計(jì)工作，Email:446725125@ qq. com。

[引用本文] 章鋼雷，吳映棟，葉安杰. 不均勻液化場(chǎng)地考慮差異震陷的抗液化設(shè)計(jì)研究和應(yīng)用[ J]. 建筑結(jié)構(gòu)，2022，52( 19):60-65. ZHANG Ganglei，WU Yingdong，YE Anjie. Research and applications of anti-liquefaction designconsidering differential seismic subsidence for uneven liquefaction site[J]. Building Structure，2022，52(19):60-65.