| 应用植筋锚固技术进行基桩静载试验的可行性研究 |
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| 引用本文： | 徐燕,张静娴,何晶,刁钰.应用植筋锚固技术进行基桩静载试验的可行性研究[J].岩土力学,2012,33(Z1):309-314. |
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| 作者姓名： | 徐燕 张静娴 何晶 刁钰 |
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| 作者单位： | 1. 天津市建筑科学研究院有限公司，天津 300000；2. 天津大学 土木系，天津 300072 |
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| 摘 要： | 通过理论计算和有限元模拟分析，对采用植筋锚固技术进行基桩静载试验进行可行性研究。结果表明，按照理论计算进行植筋布置，可控制原有底板变形并满足荷载反力要求。试验过程中，试桩边缘的底板抬升值最大，距离试桩边缘越远，抬升量越小；试验对底板的变形影响范围为距中心点7 m的区域。通过预先调整钢筋的松紧程度，可使植筋受力均匀，避免植筋断裂。应用植筋锚固技术进行静载试验是可行的，该方法具有试验方法简便、安全和经济的优点，作为一种新的反力装置，可作为特殊条件下基桩静载试验的方法。
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| 关 键 词： | 植筋 基桩静载试验 有限元分析 |
Feasibility research of application of planting reinforcing bar technique for static load test of foundation pile |
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| XU Yan,ZHANG Jing-xian,HE Jing,DIAO Yu.Feasibility research of application of planting reinforcing bar technique for static load test of foundation pile[J].Rock and Soil Mechanics,2012,33(Z1):309-314. |
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| Authors: | XU Yan ZHANG Jing-xian HE Jing DIAO Yu |
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| Institution: | 1. Tianjin Research Institute of Building Science, Tianjin 300000, China; 2. Department of Civil Engineering,Tianjin University, Tianjin 300072, China |
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| Abstract: | Through theoretical calculation and finite element analysis,the feasibility of applying the planting reinforcing bar technique for static load test of foundation pile is researched.The experiment results show that the requirements of load force is satisfied and deformation of baseplate can be controlled after the planting-bar arranged in accordance with theoretical calculation.In the course of test,the baseplate rising of the edge of test pile side is maximum,farther from the edge of the test pile,the smaller uplift.The incidence of deformation in the test on the floor is the area away from the center of 7m.Through adjusting the tightness degree of the reinforcing bar before the test,the stress of the reinforcing bar is uniform and the fracture of planting-bar is avoided.Application of planting reinforcing bar technique for static load test is feasible.The method has the advantages in the aspects of simplicity,safety and economy;which is the choice of static load test under special conditions as a new load force. |
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| Keywords: | planting reinforcing bar static load test of foundation pile finite element analysis |
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