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在桩基动测中,混凝土纵波波速的选取对保证测试质量是至关重要的。本文指出目前某些单位流传的“波速与混凝土强度之间的换算关系”是错误的,分析了影响混凝土波速的原因,进而提出了混凝土波速选取的大概范围和应注意的问题。
In the dynamic measurement of the pile foundation, the selection of the longitudinal wave velocity of the concrete is crucial to ensure the quality of the test. This paper points out that the current “transformation relationship between wave velocity and concrete strength” is incorrect in some units, analyzes the reasons that affect the wave velocity of concrete, and then proposes the approximate range of the velocity of concrete and the problems that should be paid attention to.