饱和液化砂层中钻孔灌注桩泥浆配合比的选定  

Selecting Mixing Ratio of Slurry of Bored Piles in Saturated Liquefied Sand Layer

作　　者：梁建军 张凯 LIANG Jian-jun;ZHANG Kai(Second Engineering Company of CCCC Tunnel Engineering Co., Ltd., Xi an 710100, Shaanxi, China)

机构地区：[1]中交隧道局第二工程有限公司,陕西西安710100

出　　处：《筑路机械与施工机械化》2018年第5期46-49,共4页Road Machinery & Construction Mechanization

基　　金：北京市住房及城乡建设部项目(2016-K4-056)

摘　　要：为了配置适用于饱和液化砂层中的钻孔灌注桩使用的泥浆,通过对比普通泥浆和PHP泥浆之间的性能差异,结合108国道禹门口黄河大桥主桥桩基施工的特点,根据所选泥浆及使用效果,从原料、制作、效率等方面对PHP泥浆进行研究。结果表明,通过使用PHP泥浆可以有效地提高在饱和液化砂层中钻孔灌注桩的成孔质量,具有极高的应用及推广价值。In order to prepare the slurry for bored piles in saturated liquefied sand layer,the study of PHP slurry was conducted in aspects of raw materials,preparation and efficiency by combining the difference in performance of the ordinary slurry and PHP slurry with the characteristics of the pile foundation of Yumenkou Yellow River Bridge on National Highway 108.The results indicate that the borehole quality of the bored piles can be effectively improved by using PHP slurry,which suggests it is worthy of promotion.

关 键 词：饱和液化砂层 PHP泥浆 钻孔灌注桩 成孔质量 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]