砂土注浆加固强度特性研究

Study on strength characteristics of sand grouting reinforcement

高聚物注浆技术已在实际工程中得到广泛应用,通过室内三轴试验和Abaqus有限元数值模拟进行砂土加固前后强度的对比分析,结果表明:砂土通过注浆加固后强度能够得到明显地提高,原因是注浆后高聚物对砂土颗粒间的孔隙有填充作用,增大了颗粒间的粘结力,阻碍了颗粒的运动,从而能够提高土体的承载力。

Polymer grouting technology has been widely used in practical engineering, and comparative analysis of strength before and after sand reinforcement has been conducted by indoor triaxial test and Abaqus finite element numerical simulation. Results show that the strength of the sand after grouting can be significantly improved, because the polymer has a filling effect on the pores between the sand particles, increasing the adhesion between the particles and hindering the movement of the particles, which improves the bearing capacity of soil.