Open AccessStudy on Vibration Characteristics of Piers and Foundation Sites in Seasonal Frozen Soil Areas under Train Load
Author(s) -
Haizhong Zheng,
Wujian Yan,
Ping Wang,
Fuxiu Li
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/304/4/042004
Subject(s) - vibration , foundation (evidence) , geotechnical engineering , attenuation , pier , geology , environmental science , engineering , structural engineering , geography , physics , archaeology , quantum mechanics , optics
In order to study the vibration characteristics of railway piers and different foundation sites in seasonal frozen soil region under train load, the piers and foundation sites of Tieling-Siping of Harbin-Dalian high-speed railway were tested on site, and the vibration attenuation characteristics of different sites and different seasons were analysed using numerical simulation method. The results show that the vibrations in the Y and Z directions are amplified on the side of piled soil-filling in both freezing and non-freezing seasons, when the distance R from the bottom of pier is less than 0.8m. But the vibration is amplified only in Z direction on the side of non-piled soil-filling. In the freezing season or in the non-freezing season, when R is between 1 and 2m, the vibration attenuation speed on the side of piled soil-filling is obviously lower than that on the side of non-piled soil-filling. When R is larger than 3m, the vibration attenuation of three directions is not affected by the piled soil-filling or not. Whether on the side of piled soil-filling or non-piled soil-filling, the vibration attenuation speed in freezing season is lower than that in non-freezing season.