Design and Discussion of Foundation Reinforcement for a High Building
王荃①WANG Quan;郑直②ZHENG Zhi
①安徽省城市综合设计研究院有限公司,合肥230001;
②中水淮河规划设计研究有限公司,合肥230601
①Anhui City Comprehensive Design Institute Co.,Ltd.,Hefei 230001, China;
②China Water Huaihe River Planning,Design and Research Co.,Ltd.,Hefei 230601, China
摘要:在项目建设过程中,经常遇到因施工操作不当导致地基土受扰动,导致地基承载力不能满足设计要求,为此需要对扰动的地基土进行加固处理来提高地基承载力.本研究以皖北地区某高层住宅建筑为例,由于降水井处理不当,使地基中的部分粉细砂随水抽出,导致原CFC复合地基承载力不满足,针对该问题,提出深层高压旋喷注浆与浅层静压注浆相结合的复合注浆处理方案,探讨其中的设计要点,从而达到高效的加固效果。
Abstract: In the process of project construction, it is often encountered that the foundation soil is disturbed due to improperconstruction operation，resulting in the bearing capacity of the foundation can not meet the design requiremenls，so it is necessary tostrengthen the disturbedl foundation soil o improve the bearing capacity of the foundation.This studly takes a high-rise residential bouildingin northem Anhui as an example. Due to improper treatment of the dewatering well, some fine sand in the foundation is extracted withwater，resuling in inadequate bearing capacity of the original CFG composite foundation.To solve this problem, a composite groutingtreatment scheme combining deep high pressure rolary jel grouting and shallow static pressure grouting is proposed, and the key points ofdesign are discussed, so as to achieve efficient reinforcement effect.
关键词:地基加固;高压旋喷注浆;静压注浆
Key words: foundation reinforcement; high pressure grouting; static pressure grouting
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