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(1 啟迪設(shè)計(jì)集團(tuán)股份有限公司, 蘇州 215021; 2 中海企業(yè)集團(tuán)蘇州公司, 蘇州 215021)

摘要: 以蘇州某坡地建筑地下室為工程背景,結(jié)合山腳下高差較大的場地條件,采用了階梯式地下室建筑方案.以場地土層為微透水層的條件,采用主動(dòng)的疏水降壓減浮的設(shè)計(jì)方案. 經(jīng)過對(duì)地下室基坑滲流量及雨水下滲量的計(jì)算分析,結(jié)合合理的疏水盲溝布置及可靠的后期運(yùn)行管理,探討了該方案的技術(shù)可行性. 介紹了疏水降壓減浮設(shè)計(jì)方案應(yīng)用時(shí)對(duì)建筑、設(shè)備、基坑支護(hù)、景觀、海綿城市等多專業(yè)設(shè)計(jì)提出的相關(guān)要求,以及盲溝及地下室肥槽回填施工、盲溝維護(hù)、應(yīng)急預(yù)案處理及物業(yè)管理等方面的一系列要求及保障措施. 結(jié)果表明,疏水降壓減浮設(shè)計(jì)方案長期有效,可以確保結(jié)構(gòu)安全.

關(guān)鍵詞: 坡地建筑; 地下室; 疏水降壓減浮; 疏水盲溝; 抗浮設(shè)計(jì); 盲溝維護(hù)

中圖分類號(hào): TU318 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002?848X(2022)07?0105?06

DOI:10. 19701 / j.jzjg.SZY2108

Design and analysis of drainage depressurization and floatation reductionin the basement of a building on a slope

CAO Yankai1, YUAN Xuefen1, ZHANG Min1, LU Chunhua1, SU Peng1, ZHAO Yiqing2

(1 Tus?Design Group Co., Ltd., Suzhou 215021, China;2 China Overseas Development Group Co., Ltd., Suzhou 215021, China)

Abstract: Taking the basement of of a building on a slope in Suzhou as the engineering background, combined with the siteconditions with a large height difference at the foot of the mountain, a stepped basement building scheme was adopted.Under the condition that the soil layer of the site is a micro?permeable layer, the design scheme of active drainagedepressurization and floatation reduction was adopted. After the calculation and analysis of the seepage flow of thefoundation pit and the infiltration of rainwater, combined with the reasonable layout of the drainage blind ditch and thereliable later operation management, the technical feasibility of the scheme was discussed. When the design scheme ofdrainage depressurization and floatation reduction was used, the relevant requirements of this scheme for multi?professionaldesign such as buildings, equipment, foundation pit support, landscape, and sponge city were introduced. A series ofrequirements and safeguards for blind ditch and basement fertilizer tank backfill construction, blind ditch maintenance,emergency plan handling and property management were introduced. The results show that the design scheme of drainagedepressurization and floatation reduction is effective for a long time and can ensure the safety of the structure.

Keywords:building on a slope; basement; drainage depressurization and floatation reduction; blind drainage ditch; antifloating design; blind ditch maintenance

第一作者:曹彥凱,學(xué)士,高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,主要從事大型綜合體、大跨結(jié)構(gòu)、復(fù)雜高層等結(jié)構(gòu)設(shè)計(jì)研究,Email:yankai.cao@ tusdesign.com.

[引用本文] 曹彥凱,袁雪芬,張敏,等. 某坡地建筑地下室疏水降壓減浮設(shè)計(jì)分析[ J].建筑結(jié)構(gòu),2022,52(7):105?110. CAO Yankai,YUAN Xuefen,ZHANG Min,et al. Design and analysis of drainage depressurization and floatationreduction in the basement of a building on a slope[J]. Building Structure,2022,52(7):105?110.