[1]姚梅红.预应力抗拔扩底桩的设计原理与应用[J].福建工程学院学报,2016,14(03):218-222.[doi:10.3969/j.issn.1672-4348.2016.03.003]
　Yao Meihong.The evaluation of bearing capacity and the optimization design of anti-floating capacity for forrock-socketed anti-uplift piles[J].Journal of FuJian University of Technology,2016,14(03):218-222.[doi:10.3969/j.issn.1672-4348.2016.03.003]
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预应力抗拔扩底桩的设计原理与应用()
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《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第14卷
期数:
2016年03期
页码:
218-222
栏目:
出版日期:
2016-06-25

文章信息/Info

Title:
The evaluation of bearing capacity and the optimization design of anti-floating capacity for forrock-socketed anti-uplift piles
作者:
姚梅红
福建船政交通职业学院道路工程系
Author(s):
Yao Meihong
Road Engineering Department, Fujian Chuangzheng Communications College
关键词:
抗拔灌注桩;  扩底端;  预应力;  裂缝控制
Keywords:
uplift cast-in-situ pile;  under-reamed pile bottom;  prestress;  cracking control
分类号:
TU47
DOI:
10.3969/j.issn.1672-4348.2016.03.003
文献标志码:
A
摘要:
结合工程实践，以高层建筑附建式纯地下室与主体间的沉降差控制为目标，论述嵌岩扩底灌注桩抗拔承载力的合理估算、纯地下室采用桩基应对整体抗浮不足的优化设计方法。工程实践证明，嵌岩扩底桩可显著提高单桩的抗拔承载力，其嵌岩段抗拔极限侧阻力的估算可参照承压嵌岩桩的方法，以岩石单轴饱和抗压强度标准值表达桩的极限侧阻力标准值，并乘以抗拔折减系数来取值。
Abstract:
Targeted at a scientific control of differential settlement between the attached pure basement of high-rise buildings and the main body in engineering projects, the reasonable estimation of the anti-uplift capacity of rock embedded under-reamed cast-in-situ piles and the optimization design schemes for pure basement to improve the overall anti-floating capacity were discussed. The engineering practical results indicate that the rock embedded under-reamed cast-in-situ piles can increase significantly the uplift bearing capacity of single piles. The estimation of ultimate side uplift resistance of the cast-in-situ piles’ embedded part can refer to the method used in rock-embedded pressure bearing piles. The ultimate side resistance standard value of the piles can be expressed by rock uniaxial saturated anti-compressive strength standard value multiplied by the uplift reduction factor.

参考文献/References:

[1] 刘金砺，高文生，邱明兵. JGJ94—2008 建筑桩基技术规范应用手册[M].北京：中国建筑工业出版，2010：120-124.
[2] 史佩栋.桩基工程手册：桩和桩基础手册[M].北京：人民交通出版社，2008:169-174；
[3] 中华人民共和国建设部.建筑桩基技术规范:JGJ94—2008[S].北京：中国建筑工业出版社，2008.
[4] 中华人民共和国住房和城乡建设部.钢筋混凝土设计规范:GB50010—2010[S].北京：中国建筑工业出版社，2010.

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[1]姚梅红.钢筋混凝土抗拔灌注桩的抗裂设计[J].福建工程学院学报,2016,14(06):518.[doi:10.3969/j.issn.1672-4348.2016.06.002]
　Yao Meihong.Anti-crack design for reinforced concrete anti-uplift cast-in-place pile[J].Journal of FuJian University of Technology,2016,14(03):518.[doi:10.3969/j.issn.1672-4348.2016.06.002]

更新日期/Last Update: 2016-06-25