夯扩载体劲芯桩多元复合地基施工技术  

Construction Technology of Composite Foundation with Ram-compacted Carrier and Rigid-cored Piles

作　　者：邹胜勇[1] 陆陈强 王学平[3] 

机构地区：[1]浙江交通职业技术学院,杭州市311112 [2]天环建设集团有限公司,台州市317299 [3]杭州宇航交通工程有限公司,杭州市311100

出　　处：《公路》2015年第3期8-13,共6页Highway

基　　金：浙江省科技厅公益性技术应用研究计划项目;项目编号2013C33002

摘　　要：为提高复合地基的加固效果并拓宽适用范围,融合载体桩、柔性桩和刚性桩的技术优点形成了多元桩复合地基。通过劲芯复合桩工作原理分析,优化了该复合地基的材料选择与结构组合,同时阐述了施工工艺流程和质量控制等技术环节,形成了夯扩载体劲芯桩多元复合地基新技术新工艺。分析表明,多元劲芯桩复合地基具有单桩承载力高、加固效果显著和适用性强等优点,较适合土层分布不均匀或承载力要求不一等特殊工况;还可消耗建筑垃圾等固体废弃物,减少砂石等天然建材用量,从而具有降低工程造价和保护生态环境等功效。In order to improve the reinforced effect of composite foundation and extend its application scope,the advantages of carrier,flexible and rigid piles have been integrated to design a multi-type-pile composite foundation.Based on the analysis of mechanical performance of rigid-cored pile,the choice of material and assembly of structure has been optimized.The construction flow chart and quality control also have been interpreted,and a new construction technology,namely Composite Foundation with Ramcompacted Carrier and Rigid-cored Piles,has been developed.The analysis show that this type of composite foundation has some advantages of higher bearing capacity,remarkable reinforced effect and extensive application scope,and it is applicable to some special cases in which the distribution of subgrade layer is non-uniform and criterion of bearing capacity is different.The proposed technology has a good virtue of project cost decrease and ecological condition protection since it enhances the disposal of building waste and decreases the consumption of natural aggregates.

关 键 词：路基工程 夯扩载体 劲芯复合桩 多元复合地基 施工技术 

分 类 号：U416.1[交通运输工程—道路与铁道工程]