scholarly journals Experimental and Theoretical Determination of Settlement of Shallow Footing on Liquefiable Soil

2020 ◽  
Vol 26 (9) ◽  
pp. 155-164
Author(s):  
Ahmed Mohammed Sadiq ◽  
Bushra Suhale Albusoda
Keyword(s):  
Shaking Table Test ◽  
Shaking Table ◽  
Earthquake Loading ◽  
Good Convergence ◽  
Liquefiable Soil ◽  
Spss Software ◽  
Input Motion ◽  
Grouting Materials ◽  
Shallow Footing

A high settlement may take place in shallow footing when resting on liquefiable soil if subjected to earthquake loading. In this study, a series of shaking table tests were carried out for shallow footing resting on sand soil. The input motion is three earthquake loadings (0.05g, 0.1g, and 0.2g). The study includes a reviewing of theoretical equations (available in literatures), which estimating settlement of footings due to earthquake loading, calibration, and verification of these equations with data from the shaking table test for improved soil by grouting and unimproved soil. It is worthy to note that the grouting materials considered in this study are the Bentonite and CKD slurries. A modification to the seismic settlement equations, by statistical analysis using SPSS software, had been done to account for the liquefaction state. The modified equation showed a good convergence with the measured settlement values.

Study on Lateral Dynamic Response of Pile Foundation in Liquefiable Soil by Using FBG Method

2012 ◽  
Vol 238 ◽  
pp. 337-340 ◽  
Author(s):  
Yu Run Li ◽  
Yan Liang ◽  
Xing Wei ◽  
Yun Long Wang ◽  
Zhen Zhong Cao
Keyword(s):  
Dynamic Response ◽  
Data Acquisition ◽  
Pile Foundation ◽  
Maximum Stress ◽  
Shaking Table Test ◽  
Data Acquisition System ◽  
Seismic Damage ◽  
Shaking Table ◽  
Calculation Methods ◽  
Liquefiable Soil

The study on lateral dynamic response of pile foundation in liquefiable soil is a significant part about seismic damage. In this paper, a new data acquisition system of FBG and calculation methods is used in the small shaking table test. The results show that FBG method used in this test is proved to be efficient and acceptable in both time characteristics and precision characteristics, it may be widely applied in the future doubtlessly. What’s more, the characteristics of p-y curves in different peak accelerations are discussed. And varying of maximum stress and displacement by corresponding acceleration is discussed. A contrast about p-y curve between dry sand and saturate sand is related, which provides a new direction in research about p-y curve.

Shaking Table Test of Muti-Story Subway Station Considering Soil-Structure Interaction

2013 ◽  
Vol 694-697 ◽  
pp. 321-324 ◽  
Author(s):  
Shu Wei Wang ◽  
Ying Ming Zhou ◽  
Shu Yun Mi
Keyword(s):  
Seismic Waves ◽  
Shaking Table Test ◽  
Response Spectrum ◽  
Three Dimensional ◽  
Soil Surface ◽  
Shaking Table ◽  
Subway Station ◽  
Acceleration Process ◽  
Underground Structures

In this paper, a three-dimensional shaking table test of three three-span subway station model is done. Three test seismic waves were selected in this experiment, which were applied to the model. Modal analysis of the structure was done, and the determination of the acceleration of the model structure was obtained. And the law of underground structures under earthquake damage was analysis. Soil surface acceleration process and its response spectrum and strain are obtained in the different amplitudes of ground motion input case. From experiment cracks in the emergence and development of the situation were observed, and which gives recommendations for the seismic design of underground structures.

A New Method for Dynamic p-y Curves of Pile-Cap Structure in Layered Soil

2012 ◽  
Vol 226-228 ◽  
pp. 1089-1093
Author(s):  
Yu Run Li ◽  
Yan Liang ◽  
Xing Wei ◽  
Yun Long Wang
Keyword(s):  
Dynamic Response ◽  
Pile Foundation ◽  
Theoretical Basis ◽  
Shaking Table Test ◽  
Test Methods ◽  
Shaking Table ◽  
Liquefiable Soil ◽  
Pile Cap ◽  
Engineer Application ◽  
First Time

Lateral dynamic response of pile foundation in liquefiable soil has been one of the focal problems of the geotechnical engineering field and varieties of test methods are put forward by experts and scholars. In the dissertation, a shaking table test is based on and a new calculation method is involved too. It’s the first time that using Fiber Prague Grating (FBG) technology in the method of study on lateral dynamic response of pile foundation in liquefiable soil. Experimental results indicate that calculation by method of FBG is more accurate than that by acceleration integral method. Data processing shows that p-y curve of pile foundation in liquefiable soil can be better to indicate the actual dynamic constitutive relation, and it establishes the theoretical basis of experimental study and engineer application of pile foundation in liquefiable soil

FRACTURE OF BEAM-TO-COLUMN CONNECTIONS SIMULATED BY FULL-SCALE SHAKING TABLE TEST AND EVALUATION OF DEFORMATION CAPACITY

2002 ◽  
Vol 67 (560) ◽  
pp. 181-188 ◽  
Author(s):  
Yuka MATSUMOTO ◽  
Satoshi YAMADA ◽  
Ken OKADA ◽  
Masatoshi IDE ◽  
Toru TAKEUCHI ◽  
...  
Keyword(s):  
Shaking Table Test ◽  
Full Scale ◽  
Shaking Table ◽  
Deformation Capacity ◽  
Test And Evaluation
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