| 苏通大桥二期试桩后压浆的施工及效果检测 |
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| 引用本文： | 徐家明,李兆琴,方宏.苏通大桥二期试桩后压浆的施工及效果检测[J].地质学刊,2010,34(1):79-83. |
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| 作者姓名： | 徐家明 李兆琴 方宏 |
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| 作者单位： | 江苏省地质工程有限公司;江苏省地质工程勘察院; |
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| 摘 要： | 随着高层建筑和大型桥梁的兴建,钻孔灌注桩在工程中已得到了极为广泛的应用。但是,钻孔灌注桩的固有缺陷,例如孔底沉渣、孔壁泥浆、端阻力、侧阻力发挥不同步等,限制了其承载力的发挥并且沉降较大。由此,钻孔灌注桩压力注浆技术应运而生,并被逐渐应用于工程实践中。所以,对桩的后压浆施工工艺、受力机理等技术问题进行研究是非常重要的。在国内外现有的理论研究和工程应用基础上,通过对苏通大桥Ⅱ期的试桩工程施工,详细阐述了桩端后压浆技术的具体应用。同时,利用钻孔取心及CT检测技术分析后压浆的施工效果。
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| 关 键 词： | 后压浆 钻孔取心 CT检测 压浆管 苏通大桥 江苏 |
On construction and effect detection of post grouting of second phase trial piles Sutong Yangtze River Bridge |
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| XU Jia-ming,LI Zhao-qin,FANG Hong.On construction and effect detection of post grouting of second phase trial piles Sutong Yangtze River Bridge[J].Jiangsu Geology,2010,34(1):79-83. |
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| Authors: | XU Jia-ming LI Zhao-qin FANG Hong |
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| Institution: | 1.Geological Engineering Company Limited of Jiangsu Province/a>;Nanjing 210018/a>;China/a>;2.Geological and Engineering Exploration Institute of Jiangsu Province/a>;Nanjing 210012/a>;China |
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| Abstract: | The bored piling technology was widely used in the construction of high buildings and bridges.The original limitations of the bored piles like bottom sediments,slurry on the hole wall,and non-synchronized exertion of end and side resistances restricted its play of bearing capacity.So,the bored pile pressure grouting technology was evolved and put into practice,and the studies on the post grouting technique and force mechanism became very important.On the bases of the available theories and engineering appli... |
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| Keywords: | Post grouting Drilling core CT detection Grouting pipe Sutong Yangtze River Bridge Jiangsu |
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