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（中機(jī)國際工程設(shè)計研究院有限責(zé)任公司， 長沙 410007）
［摘要］因場地條件的差異，地下室及基礎(chǔ)設(shè)計的合理性與針對性是結(jié)構(gòu)設(shè)計的工作重點(diǎn)。結(jié)合一個實(shí)際高層住宅項(xiàng)目的地下室，根據(jù)其所處的環(huán)境位置、場地土層分布特點(diǎn)，優(yōu)化基礎(chǔ)選型，采取人工挖孔樁樁端后注漿工藝，以圓礫層為持力層，有效地控制了結(jié)構(gòu)沉降；對注漿壓力、注漿量等施工參數(shù)進(jìn)行了分析，為施工操作和質(zhì)量驗(yàn)收提供了依據(jù)；同時對抗浮水位和地下室外墻抗裂采取了針對性的措施。經(jīng)過實(shí)踐檢驗(yàn)，設(shè)計方案達(dá)到了預(yù)期目標(biāo)。
［關(guān)鍵詞］圓礫層； 后注漿； 注漿壓力； 抗浮水位； 裂縫控制
中圖分類號：TU473.1文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2019)06-0112-04
Case analysis of basement optimal design based on site conditions
Tan Guangyu, Fu Guozhong, Zhang Jianhua, Chen Li， Zhao Wei
(China Machinery International Engineering Design & Research Institute Co., Ltd., Changsha 410007, China)
Abstract:The rationality and pertinence of basement and foundation design are the key points of structural design because of the differences in site conditions. Combined with the basement of a practical high-rise residential project, according to the location of the environment and the distribution characteristics of the site soil layer, the selection of foundation was optimized. The design adopted the post-grouting technology of manula digging pile end, and taked round gravel as the bearing stratum, which effectively controlled the foundation settlement. The grouting pressure, grouting volume and other construction parameters were analyzed, providing a basis for construction operation and quality acceptance. At the same time, targeted measures for anti-floating water level and crack resistance of basement exterior walls were taken. After practical inspection,the scheme adopted in the design has achieved the expected goal.
Keywords:round gravel; post-grouting; grouting pressure; anti-floating water level; cracking control
作者簡介：譚光宇，碩士，教授級高級工程師，一級注冊結(jié)構(gòu)工程師，Email:371643439@qq.com。
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