砂卵石回填地基高压旋喷桩处理技术应用  

Application of treatment technology of high-pressure rotary jet grouting pile for sand and pebble backfill foundation

作　　者：罗辉 向海泉 刘民 LUO Hui;XIANG Haiquan;LIU Min(China Railway Second Bureau Real Estate Group Co.,Ltd.,Chengdu 610031,Sichuan,China)

机构地区：[1]中铁二局房地产集团有限公司,四川成都610031

出　　处：《工程建设》2023年第8期55-61,共7页Engineering Construction

摘　　要：地基是建筑稳固的基石,直接决定了整个建筑的安全性和稳定性。为解决天然地基超挖后加固处理难题,本文以成都某工程为例,对基于不明地质条件误挖天然地基现状进行研究,计算高压旋喷桩复合地基加固参数,阐述高压旋喷桩的施工技术应用并开展复合地基触探和静载试验。结果表明:高压旋喷桩复合地基能完全满足设计地基承载力要求,综合比较下具有较高的实用价值和经济效益,对解决不明地质条件下超挖天然地基的加固处理难题具有重要意义。The solid foundation is the foundation of a stable building,directly determining the safety and stability of the entire structure.To address the challenge of reinforcing the over-excavated natural foundation,this article takes a project in Chengdu as an example to study the current situation based on unclear geological conditions.The reinforcement parameters of the high-pressure jet-grouting pile composite foundation are calculated,and the construction technology application of the high-pressure jet-grouting pile is described.The composite foundation sounding and static load test are carried out.The results show that the high-pressure jet-grouting pile composite foundation can fully meet the design requirements of foundation bearing capacity,and has high practical value and economic benefits compared with other reinforcement measures.It is of great significance for solving the problem of reinforcing the over-excavated natural foundation under unclear geological conditions.

关 键 词：地基 超挖 回填 高压旋喷桩 应用 

分 类 号：TU753.3[建筑科学—建筑技术科学]