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| 强风化花岗岩中钻孔扩底灌注桩承载性状试验 | |
| 引用本文： | 黄圭峰,唐辉明,罗红明.强风化花岗岩中钻孔扩底灌注桩承载性状试验[J].地质科技情报,2009,28(3). |
| 作者姓名： | 黄圭峰 唐辉明 罗红明 |
| 作者单位： | 1. 中国地质大学,武汉,430074;深圳市建设工程质量监督总站,广东深圳,518031 2. 中国地质大学,武汉,430074 3. 中国科学院武汉岩土力学研究所,武汉,430071 |
| 摘 要： | 对3根埋有应力测试元件的钻孔扩底灌注桩静载试验结果的分析表明，在竖向荷载的作用下，桩底土压力的分布规律为中部大、两边小（〉6000 kN），桩端扩大头上斜面土压力随桩身沉降增大而减小，各土层侧摩阻力达到极限时所需桩顶位移为12-19mm。试验还表明，桩侧摩阻力达到最大值后的“软化”现象非常明显，根据试验实测数据的计算，软化后的侧摩阻力衰减为20％～30％，各土层侧摩阻力实测值也普遍比规范给定的理论计算值小9-17％。 |
| 关 键 词： | 强风化花岗岩 扩底桩 静载试验 侧摩阻力 承载性状 |
Experimental Study on Bearing Behavior of Bored Belled Piles in Strong Weathered Granite |
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| HUANG Gui-feng,TANG Hui-ming,LUO Hong-ming.Experimental Study on Bearing Behavior of Bored Belled Piles in Strong Weathered Granite[J].Geological Science and Technology Information,2009,28(3). | |
| Authors: | HUANG Gui-feng TANG Hui-ming LUO Hong-ming |
| Institution: | 1.China University of Geosciences;Wuhan 430074;China;2.Shenzhen Construction Quality Supervision Center;Shenzhen;Guangdong;518031;3.Institute of Rock and Soil Mechanics;CAS;Wuhan 430071;China |
| Abstract: | This paper describes static loading test in three numbers of belled piles.The analysis of test results shows that the basic resistance distribution is a peak in the central and reduction in the edge under vertical loading.The ground pressure on the upper inclined surface of the belled pile shall reduce while the pile settlement increases.The frictional resistance shall achieve the peak while the settlement of the piles reaches 12 mm to 19 mm.The experiment also indicates that when the pile side friction rea... |
| Keywords: | strong weathered granite belled pile static loading test frictional resistance bearing behavior |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |