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(山東建筑大學(xué)  濟(jì)南 250014)
【提要】  在逆作法施工中采用板式托換法，可利用擬建地下室的部分頂板和底板作為托換構(gòu)件承擔(dān)上部荷載，起到臨時(shí)基礎(chǔ)的作用，以施工地下室的豎向構(gòu)件。技術(shù)要點(diǎn)是控制板下土體沉降量和穩(wěn)定性以及板式托換基礎(chǔ)工法的構(gòu)件設(shè)計(jì)。工程實(shí)例表明，該方法可省去灌注樁和中間支撐柱的成本，降低工程造價(jià)。
【關(guān)鍵詞】  板式托換法  施工荷載  支護(hù)  逆作法
Application of Underpinned Floor Technology in Inverse Construction/Jia Qiang,Zhang Xin(Shandong Jianzhu University,Jinan 250014,China)
Abstract:Underpinned floor is a way that applies the proposed partial base and top slabs to bear the upper load as a temporary foundation.At the same time,the column of basement can be lengthened.The technology of underpinned floor, the method of controlling foundation settlement under the floor, and the design of base members are introduced.A pratical engineering is used to illustrate.The application of underpinned floor technology in topdown construction can cut down the expense on concrete pile and steel pillar.
Keywords:underpinned floor; construction load; shoring work; topdown construction