预制钢筋混凝土方桩桩端后注浆工艺设计与施工  

Design of Pile-end Post-grouting Technology for Pre-cast Reinforced Concrete Square Pile and the Construction

作　　者：张习上 赵卫政 

机构地区：[1]安徽岩土工程有限责任公司上海分公司,上海200122 [2]江苏兴厦建筑安装有限公司上海分公司,上海200237

出　　处：《探矿工程（岩土钻掘工程）》2012年第10期58-62,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：在分析了目前华东地区常用的钻孔灌注桩、预应力混凝土管桩及预制钢筋混凝土方桩等几种桩型优缺点的基础上,提出了将桩端后注浆工艺与预制钢筋混凝土方桩相结合的工艺,并通过工程案例验证该工艺既能提高单桩承载力,节约成本,又能够弥补钻孔灌注桩施工噪声大、效率低、环境污染严重等不足。介绍了这种组合工艺的设计与施工工艺。Based on the analysis on the advantages and disadvantages of bored grouting pile, pre-stressed concrete pipe pile and pre-cast reinforced concrete square pile common used in east China at present, a technology of the combination of pile-end post-grouting and pre-cast reinforced concrete square pile was put forward. It was verified by project cases that this technology could increase the bearing capacity of single pile with low cost and also could remedy defects of high noise, low efficiency and environmental pollution in the construction of the bored grouting pile. The paper introduced the design and the construction process of this combined technology.

关 键 词：预制钢筋混凝土方桩 桩端后注浆 注浆管路系统 桩靴注浆器 

分 类 号：TU473.1[建筑科学—结构工程]