3D Numerical Simulation of the Influence of Drilling-blasting Subway Construction on Subgrade Settlement

Autor:	Liu Ying, Yu Yongyan, Wang Jiliang, Du Tianling
Rok vydání:	2020
Předmět:	Computer simulation Settlement (structural) Drilling Geotechnical engineering Subgrade Geology Rock blasting
Zdroj:	IOP Conference Series: Materials Science and Engineering. 780:062020
ISSN:	1757-899X 1757-8981
DOI:	10.1088/1757-899x/780/6/062020
Popis:	Based on the tunnel between Junfeng road-Xiliuzhuang of Qingdao metro, the tunnel excavation model is established by FLAC3D software. The established calculation model mainly includes:(1) Free field boundary conditions are adopted around and at the bottom of the model;(2) The blasting load is simulated by triangle pulse wave;(3) According to the peak value V of the surface velocity, the peak value Pmax of the velocity in the triangular pulse wave is calculated by Sadovsky formula;(4) The calculation results show that the vertical settlement of subgrade is more significant when compared with horizontal settlement;(5) the calculation results are in good agreement with the field monitoring data. It shows that the method can simulate the dynamic characteristics of the model and reflect the dynamic response of subgrade settlement.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ede48ebd7412311795d1b1061c5f4561 https://doi.org/10.1088/1757-899x/780/6/062020 Zobrazit plný text záznamu