苏通大桥二期试桩后压浆的施工及效果检测
|
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。
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 applications both home and abroad,the second phase trial pile construction of Sutong Yangtze River Bridge,the authors depicted the detailed application of post grouting technology,hole coring usage and CT detection technology.
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 applications both home and abroad,the second phase trial pile construction of Sutong Yangtze River Bridge,the authors depicted the detailed application of post grouting technology,hole coring usage and CT detection technology.
引文
[1]史佩栋.实用桩基工程手册[M].北京:中国建筑工业出版社,1999.
[2]张宏.灌注桩检测与处理[M].北京:人民交通出版社,2001.
[3]张忠苗,章公锋.不同持力层钻孔桩桩底后压浆应用效果分析[J].建筑结构学报,2002,23(6):85-94.
[4]张忠苗,吴世明,包风.钻孔灌注桩桩底后压浆机理与应用研究[J].岩土工程学报1999,21(6):681-686.
[5]张忠苗,唐朝文.关于钻孔桩桩底后注浆的技术要点[J].岩土力学与工程学报,2002,21(11):1740-1743.
[6]江苏省地震工程研究院.苏通大桥二期试桩压浆效果CT检测报告[R].2003.
[7]东南大学土木工程学院.苏通大桥二期试桩工程总报告[R].2003.
[8]江苏省地质工程有限公司.苏通大桥二期试桩压浆效果钻探检测报告[R].2003.
[2]张宏.灌注桩检测与处理[M].北京:人民交通出版社,2001.
[3]张忠苗,章公锋.不同持力层钻孔桩桩底后压浆应用效果分析[J].建筑结构学报,2002,23(6):85-94.
[4]张忠苗,吴世明,包风.钻孔灌注桩桩底后压浆机理与应用研究[J].岩土工程学报1999,21(6):681-686.
[5]张忠苗,唐朝文.关于钻孔桩桩底后注浆的技术要点[J].岩土力学与工程学报,2002,21(11):1740-1743.
[6]江苏省地震工程研究院.苏通大桥二期试桩压浆效果CT检测报告[R].2003.
[7]东南大学土木工程学院.苏通大桥二期试桩工程总报告[R].2003.
[8]江苏省地质工程有限公司.苏通大桥二期试桩压浆效果钻探检测报告[R].2003.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心