Simulation Analysis of Frame Structure Acceleration Response in Subway Buried Blasting

5th International Conference on Environmental Science and Civil Engineering

生态环境科学;土木建筑工程

Guo, Weina^1 ; Bi, Weiguo^1 ; Ren, Sijian^1

School of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao

266590, China^1

关键词: Acceleration response;    ANSYS/LS-DYNA;    Blasting construction;    Finite element analysis software;    framework;    Framework structures;    Longitudinal acceleration;    Seismic strengthening;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/283/1/012048/pdf
DOI  :  10.1088/1755-1315/283/1/012048

来源: IOP

【 摘 要 】

In order to analyze the response of the acceleration peak in different directions of frame structure to the variation of blasting distance and layer height in the shallow blasting. Based on the shallow blasting of subway, this paper uses ANSYS/LS-DYNA finite element analysis software to construct the framework structure calculation model and simulate the acceleration peak. The results show that the acceleration peak of the frame structure appears between the vertical three-layer and four-floor, and the longitudinal acceleration peak is one order of magnitude larger than the lateral direction. The acceleration peak and the blasting distance are negatively correlated, which is positively correlated with the layer height. Therefore, before the blasting construction, the seismic strengthening of the thin layer of the intermediate layer of the multi-layer frame which is close to the source of the explosion must be carried out.