scholarly journals Assessment of Response Spectrum by Dynamic Centrifuge Test for the Pile Foundation into the Sand

2014 ◽  
Vol 5 (1) ◽  
pp. 35-40
Author(s):  
Yong-Boo Park ◽  
Jong-Bae Park ◽  
Sang-Yeon Kim ◽  
Dong-Soo Kim
Keyword(s):  
Pile Foundation ◽  
Response Spectrum ◽  
Centrifuge Test ◽  
Dynamic Centrifuge Test

scholarly journals Performance of vertical drains in liquefaction mitigation under structures

2019 ◽  
Vol 17 (11) ◽  
pp. 5849-5866 ◽  
Author(s):  
Samy García-Torres ◽  
Gopal Santana Phani Madabhushi
Keyword(s):  
Point Of View ◽  
Shallow Foundations ◽  
Centrifuge Test ◽  
Vertical Drains ◽  
Liquefaction Mitigation ◽  
Pore Pressures ◽  
Dynamic Centrifuge Test ◽  
Excess Pore Pressures ◽  
Positive Results ◽  
Excess Pore

Abstract Several techniques have been developed in order to mitigate damage to buildings during and after liquefaction events. Benefits of using vertical drains have been verified by analysing their performance in the soil and evaluating their effectiveness in dissipation of excess pore pressures generated by the earthquake. However, the effect of drains in the soil below structures requires further investigation. In this paper, a dynamic centrifuge test series was carried out to evaluate the performance of a vertical drains arrangement below shallow foundations. High permeable rubble brick was used as coarse material inside the drains to provide positive results not only from a geotechnical point of view but also from an environmental and sustainable perspective. The behaviour of drains was analysed when they are located under shallow foundations of a building, in terms of the excess pore pressures generated during the earthquake and subsequent post-seismic dissipation, the foundation settlement and its dynamic response.

scholarly journals Behavior of Piles with Raft Foundation using Safe Software

2019 ◽  
Vol 8 (11) ◽  
pp. 1432-1436
Keyword(s):  
Pile Foundation ◽  
Response Spectrum ◽  
Time History ◽  
Single Pile ◽  
Response Spectrum Analysis ◽  
Pile Diameter ◽  
Raft Foundation ◽  
History Analysis ◽  
Soil Settlement ◽  
Storey Building

Piles with raft foundation are a hybrid type of foundation in which the loads coming from the super structure is partly shared by the raft foundation and partly by the piles. A G+20 Storey building is analysed and designed in ETABS software. The modelling and analysis of piles with raft foundation is done in SAFE Software by importing the building loads. The storey drift and story displacement of the structure has been studied for the superstructure loads using response spectrum analysis and time history analysis in both X and Y axes. Then behavior of piles with Raft foundation is studied in this work by considering different parameters. The Pile diameter, Spacing of piles, Number of piles, and raft thickness are varied and keeping height of the pile as constant, the behavior of pile with raft foundation is determined. Pile with Raft foundation is economical when compared to a single pile foundation or Raft foundation. In the present work of piled with raft foundation, the load is shared between pile and raft. Hence Soil settlement is gradually reduced when the piles are introduced below the raft. Finally the optimum dimensions of pile diameter and thickness of the raft are obtained for minimum settlement.

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