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本文概括了近几年利用弹性波法检测强夯加固地基效果的工程实践经验。认为采用改进了的弹性波检测技术,可以在现场快速、经济、有效地检测强夯加固的实际效果,提出使用信号增强型地震设备,布置地表折射剖面与钻孔(单孔与跨孔剪力波)测试相结合,可以实现在具有强吸收衰减的砂砾、土石混合集料中的波速测定,从而对强夯加固的作用范围和可及深度作出准确的评价。通过弹性波速度检测确定的动力弹性模量E、剪切模量G和体积压缩模量K是和介质变形性质直接有关的力学参数,可作为评价地基力学性质和估计承载能力的定量指标。
This article summarizes the engineering practice experience of using elastic wave method to detect the effect of reinforced concrete foundation reinforcement in recent years. It is believed that the improved elastic wave detection technology can quickly, economically, and effectively detect the actual effects of reinforced concrete, and proposes the use of signal-enhanced seismic equipment to arrange surface refraction profiles and drill holes (single hole and cross hole shear force. The combination of wave and test can realize the determination of wave velocity in gravel and earth-rock mixed aggregates with strong absorption and attenuation, so as to accurately evaluate the effect range and reach depth of the reinforced concrete. The dynamic elastic modulus E, shear modulus G, and volumetric compression modulus K determined by elastic wave velocity measurement are mechanical parameters directly related to the deformation properties of the medium, and can be used as quantitative indicators for evaluating the mechanical properties of the foundation and estimating the bearing capacity.