APPLICATION OF THE BENDING WAVE METHOD FOR INSPECTION OF SLAB AND WALL STRUCTURES

Bulletin of Belgorod State Technological University named after. V. G. Shukhov Pub Date : 2023-09-29 DOI:10.34031/2071-7318-2023-8-12-41-53

Ch. D. Fan

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Abstract

The paper considers the possibility of estimating the stiffness and strength characteristics of slab and wall structures by thickness based on the results of experimental studies of measurements of bending wave propagation velocities of different frequency ranges. Theoretical dispersion curves of bending wave velocities as a function of their lengths for plate structures of different characteristics at different thicknesses are constructed. Comparison of theoretical and experimental results for estimation of the state of materials by the thickness of slabs has been carried out. Experimental measurements of bending wave propagation velocities on the walls of an existing building in St. Petersburg have been carried out, and the primary assessment of masonry stiffness properties and control of the design wall thickness have been performed. The results of the studies confirmed the possibility of assessing the characteristic of the state of materials in the thickness of slab and wall structures by comparing experimental studies of bending wave propagation velocity measurements at different frequency ranges. The use of bending wave method also allows controlling the design thickness of slab, wall and lining at one-sided access

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应用弯曲波检测法检测楼板和墙体结构

本文根据不同频率范围弯曲波传播速度的测量实验研究结果，探讨了按厚度估算板和墙结构的刚度和强度特性的可能性。本文构建了不同厚度、不同特性的板结构的弯曲波速度随其长度变化的理论频散曲线。对理论和实验结果进行了比较，以根据板的厚度估算材料状态。对圣彼得堡现有建筑墙体上的弯曲波传播速度进行了实验测量，并对砌体刚度特性和设计墙体厚度控制进行了初步评估。研究结果证实，通过比较不同频率范围的弯曲波传播速度测量实验研究，可以评估板和墙结构厚度的材料状态特征。使用弯曲波方法还可以控制单侧通道板、墙和衬里的设计厚度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Bulletin of Belgorod State Technological University named after. V. G. Shukhov

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