文献类型：期刊文献

英文题名：Research on the Vibration Response of High-Rise Buildings under Blasting Load

作者：Yuan, Yubao Gao, Zhenghua He, Lu Lei, Zhen

第一作者：Yuan, Yubao

通信作者：Lei, Z[1]

机构：[1]Guiyang Inst Humanities & Technol, Guiyang 550025, Peoples R China;[2]Guizhou Normal Univ, Sch Mat & Architectural Engn, Guiyang 550025, Peoples R China;[3]Guizhou Normal Univ, Guizhou Sch Emergency Management, Guiyang 550025, Peoples R China;[4]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China

第一机构：Guiyang Inst Humanities & Technol, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China.|贵州理工学院矿业工程学院;贵州理工学院;

年份：2024

卷号：12

期号：20

外文期刊名：MATHEMATICS

收录：;Scopus(收录号：2-s2.0-85207687719);WOS:【SCI-EXPANDED(收录号:WOS:001341699800001)】；

基金：This research was funded by the National Natural Science Foundation of China (No. 51664007).

语种：英文

外文关键词：high-rise building; blasting vibration; peak particle velocity; peak particle stress; elevation amplification effect

摘要：The vibration caused by blasting load may result in damage to high-rise buildings. In view of this consideration, an investigation of the vibration law was conducted in the context of an actual engineering project. The objective of this study was to analyze the peak particle velocity (PPV), vibration frequency, and peak particle stress (PPS) of the buildings within a range of 50 m to 250 m from the epicenter, under the condition of a single-shot charge of 30 kg. To achieve this, a combination of theoretical analysis, field tests, and numerical experiments was employed. Sadovsky's formula was used in combination with the least squares method to fit the propagation law of ground PPV. ANSYS 17.0/LS-DYNA and Origin 8.0 software were applied to study the amplification effect of building PPV and the relationship between PPV and PPS. Taking into account the difference between the height of the ground measuring point and the height of the explosive center, we investigated the PPV of high-rise buildings under three conditions of 36 m, 6 m, and -24 m drop from the explosive center, to strengthen the in-depth understanding of resonance effect. The following conclusions were reached: the ground PPV decreases with increasing horizontal distance from the explosive center, with the radial PPV being the largest. The vertical PPV of buildings exhibits a height amplification effect, with a magnification factor of 2.66. The radial and tangential PPVs of buildings demonstrate that the middle layer exhibits a relatively modest speed, whereas the low and high layers demonstrate considerably higher speeds. The greater the vertical distance from the explosion center is, the greater is the PPV. The vibration frequency is irregular, with an average of 10 Hz. The PPV of buildings is not proportional to the PPS, which is the highest at the bottom. It is recommended that the PPS of buildings be included in the criteria for safety allowances in blasting vibration.