【摘要】 广州市石牌桥地铁车站主体基坑维护结构采用密排人工挖孔桩,通过优化计算分析确定桩间距2.0 m的疏排人工挖孔桩方案,并且详细分析了疏桩基坑的安全性以及对主体结构的影响。计算结果表明,采用的疏桩方案,不仅确保了基坑安全,而且节约了资金,经济效益相当显著。更多还原

【Abstract】 The densely arranged cut-cast piles were originally designed for the reinforcement of the major foundation pit of Shipaiqiao Station of Guangzhou subway. This present paper have conducted optimization calculations on the design to give a scheme of sparse arrangement of piles spaced at an interval of 2.0 m and then analysed in detail the safty of the sparsely arranged scheme and its effect on the major structure. The calculation results have shown that the new scheme can not only ensure the pits safty but also have a marked economical effect.更多还原