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| 深厚土层中长径比相近灌注桩承载性状 | |
| 引用本文： | 王学知,赵春风,赵洪平.深厚土层中长径比相近灌注桩承载性状[J].辽宁工程技术大学学报(自然科学版),2009,28(6). |
| 作者姓名： | 王学知 赵春风 赵洪平 |
| 作者单位： | 1. 同济大学,地下建筑与工程系,上海,200092;上海市建筑科学研究院(集团)有限公司,上海建科建设监理咨询有限公司,上海,200032 2. 同济大学,地下建筑与工程系,上海,200092 3. 常州市建设局,市政管理处,江苏,常州,213003 |
| 基金项目： | 上海市重点学科建设基金资助项目 |
| 摘 要： | 为了研究长径比相近灌注桩的承载性状,在常州高架道路工程城北干道一承台中设有两根桩径分别为1200 mm、600 mm长径比分别为42.5、45的钻孔灌注桩,分别对其进行静载荷试验和桩身应力测试结果分析.研究结果表明:桩端承载力低,两桩的载荷-沉降关系均表现为陡降型,且存在明显拐点;两桩桩身轴力分布曲线形态相似,小直径试桩的竖向载荷沿深度衰减规律相对于大直径试桩更接近于线性,载荷传递率更高;同一土层中直径较小试桩侧摩阻力略大于较大直径试桩,并且在其桩端附近出现明显大于同深度大直径试桩侧摩阻力的现象.该结论对深厚土层中灌注桩的设计、施工具有一定参考价值. |
| 关 键 词： | 钻孔灌注桩 载荷传递 承载性状 静载试验 |
Bearing behavior of cast-in-place piles with similar slenderness ratios in deep soil layer |
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| WANG Xuezhi,ZHAO Chunfeng,ZHAO Hongping.Bearing behavior of cast-in-place piles with similar slenderness ratios in deep soil layer[J].Journal of Liaoning Technical University (Natural Science Edition),2009,28(6). | |
| Authors: | WANG Xuezhi ZHAO Chunfeng ZHAO Hongping |
| Institution: | WANG Xuezhi1,2,ZHAO Chunfeng1,ZHAO Hongping3 (1. Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China,2. Jianke Project Management Co.,Ltd.,Shanghai Building Research (Group) Co.,Shanghai 200032,3. Municipal Management Office,Changzhou Construction Bureau,Changzhou 213003,China) |
| Abstract: | To study the bearing behavior of cast-in-place piles with similar slenderness ratios in deep soil layer,a static load test and a pile stress measurement test are conducted on two piles,one with a diameter of 1200mm and an aspect ratio of 42.5,the other with a diameter of 600mm and an aspect ratio of 45.The piles are located in a pile cap at Chengbei Road,Changzhou.The study shows that the bearing capability of pile bottom is low,and the Q-S curves of both piles appear having a steep drop respectively with a... |
| Keywords: | driven cast-in-place pile load transfer load-bearing capability static load test |
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