高压喷射注浆在某教学楼地基加固中设计要点分析

Analysis of key design points of high pressure jet grouting in foundation reinforcement of a teaching building

以某教学楼地基加固为例,对其高压喷射注浆技术设计要点进行阐述分析。首先确定该项目采用单管法高压旋喷注浆技术,对比分析确定浆液水灰比为0. 5∶1,并对喷浆参数进行设计,最后通过单桩承载力和地基变形量计算得出该项目可以实施,不会对教学楼产生破坏。

Taking the foundation reinforcement of a teaching building as an example,this paper expounds and analyses the key points of high pressure jet grouting technology design. Firstly,the single-pipe high-pressure rotary grouting technology is adopted in this project,and the grouting water-cement ratio is determined to be 0. 5∶ 1 by comparative analysis,and the grouting parameters are designed. Finally,through the calculation of bearing capacity of single pile and foundation deformation,it is concluded that the project can be implemented without destroying the teaching building.