秦景,路威,朱俊臣,高霈生
Qin Jing,Lu Wei,Zhu Junchen,Gao Peisheng

• 1:中国水利水电科学研究院工程设计研究中心
• 2:三门核电有限公司

摘要(Abstract)：

《建筑地基处理技术规范》JGJ79—2012中的m值计算公式在应用上有一定的局限性。利用复合土体单元概念,通过对不同布桩形式下复合土体单元的划分,实现了m值的准确计算。结果表明:m值的计算不仅由布桩形式决定,还与复合地基的形式(均布或条形)密切相关,主要由桩间数n和桩径与桩间距之比d/s两个参数决定。
The calculation equations of soil-column area replacement ratio( m) recommended by Chinese code"Technical Code for Ground Treatment of Buildings( JGJ79—2012) "have many limits in the practice. In this paper,general equations of m value are derived by subdividing the composite soil element under the different pile arrangements. The results show that m value is closely related to both pile arrangement and shape of composite foundation and is determined by the two parameters: interval number among piles( n) and pile diameter-spacing ratio( d / s).

关键词(KeyWords)： 复合地基;桩土面积置换率;复合土体单元;布桩形式
composite subgrade;soil-column area replacement ratio;composite soil elements;pile arrangement

Abstract:

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基金项目(Foundation):

作者(Author): 秦景,路威,朱俊臣,高霈生
Qin Jing,Lu Wei,Zhu Junchen,Gao Peisheng

参考文献(References)：

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• [5]Qin Jing,Lu Wei,Gao Peisheng.Structural design of deep foundation pit in coastal soft soil region of China[J].WIT Transactions on the Built Environment,2013(140):339-344.