淤积土地基碎石挤密桩处治分析  

Analysis on treatment of gravel compaction pile in silt soil foundation

作　　者：赵永 ZHAO Yong(Shanxi Road and Bridge Seventh Engineering Co.,Ltd.,Changzhi Branch,Shanxi Changzhi 046000 China)

机构地区：[1]山西路桥第七工程有限公司长治分公司,山西长治046000

出　　处：《山东交通科技》2023年第2期54-55,59,共3页

摘　　要：碎石挤密桩可以起到挤密、排水固结、改善地基土力学性能等作用,有效提高淤积土地基强度和承载能力。结合高速公路淤积土地基处治项目,对碎石挤密桩处治淤积土地基加固效果进行分析。结合工程实际制定处治方案,完工后分别采用动力触探试验和静载荷试验检测地基承载力,发现碎石桩上部2 m深度范围内较松散,通过增设砂垫层进行处治,最终达到了地基承载力的设计要求。Crushed-stone compaction piles can play the role of compaction,drainage consolidation,and improvement of the mechanical properties of the foundation soil,effectively improving the strength and bearing capacity of the silted soil foundation.Combined with the highway silt soil foundation treatment project,the effect of the gravel compaction pile treatment silt soil foundation reinforcement is analyzed.The treatment plan was formulated based on the actual project.After completion,the dynamic penetration test and static load test were used to detect the bearing capacity of the foundation.It was found that the upper part of the gravel pile was loose within 2 m depth.By adding sand cushion,the design requirements of foundation bearing capacity are finally met.

关 键 词：淤积土地基 碎石挤密桩 复合地基承载力 静载荷试验 动力触探试验 

分 类 号：U419[交通运输工程—道路与铁道工程]