Dynamic Soil Pressure Acting on Building Basement According to Embedment Depth

In the present study, centrifuge tests for small-scale specimens were performed to investigate the dynamic soil pressure of the basement of buildings subjected to seismic ground motions. To investigate the effect of the embedded depth of basement, a deep basement model fixed to rock (model 1) and a...

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Bibliographic Details
Published in:Journal of earthquake engineering : JEE 2024-09, Vol.28 (12), p.3310-3336
Main Authors: Park, Jin-Young, Park, Hong-Gun, Kim, Dong-Kwan
Format: Article
Language:English
Subjects:
basement
Basements
centrifuge test
Centrifuges
Depth
dynamic soil pressure
Earth pressure
Earthquakes
Embedment
Ground motion
Pressure
Pressure effects
Rocks
Seismic activity
Soil
Soil investigations
soil pressure at back wall
Soil testing
Soil-structure interaction
Soils
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Summary:In the present study, centrifuge tests for small-scale specimens were performed to investigate the dynamic soil pressure of the basement of buildings subjected to seismic ground motions. To investigate the effect of the embedded depth of basement, a deep basement model fixed to rock (model 1) and a shallow basement model embedded in soil (model 2) were tested. The soil pressures acting at the front wall (Dynamic soil pressure, DSP) and back wall (Soil pressure at back wall, BSP) were measured. Under the Northridge earthquake (with PGA b  = 0.33 g), DSP of Model 1 (fixed based model) reached 100 kPa showing an increasing linear distribution from bottom to top. The DSP profile was similar to the profile of relative displacement between the basement and soil. Interestingly, BSP decreased to 0 as a gap occurred between the soil and basement wall. On the other hand, in the case of model 2 with a smaller depth, the relative displacement between the basement and soil was smaller due to the influence of flexible base. As a result, DSP (
ISSN:1363-2469
1559-808X
DOI:10.1080/13632469.2024.2337849