臨西宏屹·御花園G1#、G2#、G3#、G4#、G5#樓CFG樁工程
一、工程概況
擬建宏屹·御花園G1#、G2#、G3#、G4#、G5#樓,由于地質(zhì)條件較差,不能滿足建筑物對(duì)地基強(qiáng)度的要求,我公司采用CFG樁對(duì)地基進(jìn)行處理。現(xiàn)正在緊張施工中。
二、設(shè)計(jì)參數(shù)
G1#樓:施工樁長(zhǎng)18.5m,有效樁長(zhǎng)18m,其中33根施工樁長(zhǎng)21.07m,24根施工樁長(zhǎng)20.07m,16根施工樁長(zhǎng)19.97m,27根施工樁長(zhǎng)19.47m,基礎(chǔ)持力層位于第④層粉土,以第⑦層粉質(zhì)黏土作樁端持力層,面積置換率7.0%;總樁數(shù)300根,砼方量為718.71m3(具體見樁位布置圖)。
G2#樓:施工樁長(zhǎng)18.5m,有效樁長(zhǎng)18m,其中33根施工樁長(zhǎng)21.07m,24根施工樁長(zhǎng)20.07m,16根施工樁長(zhǎng)19.97m,27根施工樁長(zhǎng)19.47m,樁頂土質(zhì)④層粉土,以第⑦層粉質(zhì)黏土作樁端持力層,面積置換率7.0%;總樁數(shù)300根,砼方量為718.71m3(具體見樁位布置圖)。
G3#樓:施工樁長(zhǎng)17.5m,有效樁長(zhǎng)17m,其中33根施工樁長(zhǎng)20.07m,30根施工樁長(zhǎng)19.07m,16根施工樁長(zhǎng)18.97m,27根施工樁長(zhǎng)18.47m,樁頂土質(zhì)④層粉土,以第⑦層粉質(zhì)黏土作樁端持力層,面積置換率7.3%;總樁數(shù)308根,砼方量為699.80m3(具體見樁位布置圖)。
G4#樓:施工樁長(zhǎng)17.3m,有效樁長(zhǎng)16.8m,其中32根施工樁長(zhǎng)19.87m,27根施工樁長(zhǎng)18.87m,16根施工樁長(zhǎng)18.77m,27根施工樁長(zhǎng)18.27m,樁頂土質(zhì)④層粉土,以第⑦層粉質(zhì)黏土作樁端持力層,面積置換率7.5%;總樁數(shù)313根,砼方量為702m3(具體見樁位布置圖)。
G5#樓:施工樁長(zhǎng)17.4m,有效樁長(zhǎng)16.9m,其中42根施工樁長(zhǎng)19.97m,16根施工樁長(zhǎng)18.97m,15根施工樁長(zhǎng)18.87m,25根施工樁長(zhǎng)18.37m,樁頂土質(zhì)③層粉質(zhì)黏土、④層粉土,以第⑦層粉質(zhì)黏土作樁端持力層,面積置換率7.4%;總樁數(shù)308根,砼方量為695.64m3(具體見樁位布置圖)。
②混凝土強(qiáng)度: C20;
③褥墊層:材料可選用粗砂或級(jí)配砂石,粒徑不大于20mm,鋪設(shè)200mm厚的褥墊層并夯實(shí),褥墊層鋪設(shè)范圍超出基礎(chǔ)墊層外緣不小于200mm,要求夯填度≤0.90。(施工現(xiàn)場(chǎng)圖)