Shake table studies of seismic response of single partially supported piles

Valsangkar, A. J.; Dawe, J. L.; Mita, Khaleda Ali

doi:10.3138/9781487583217-042

Cited by 9 publications

(3 citation statements)

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“…The internal surface of the soil container then was covered and sealed with two layers of black plastic sheeting. Similar to Gohl and Finn (1987) and Valsangkar et al (1991), 25 mm thick absorbing layers of Polystyrene foam sheets have been installed at the end walls of the soil container to simulate viscous boundaries in the free field condition. The thick layers of Polystyrene minimise reflection of outward propagating waves back into the model and allow the necessary energy radiation.…”

Section: Shaking Table Tests On Soil-structure Modelmentioning

confidence: 99%

Numerical and Experimental Investigations on Seismic Response of Building Frames under Influence of Soil-Structure Interaction

Tabatabaiefar

Fatahi

Samali

2014

Advances in Structural Engineering

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In this study, an enhanced numerical soil-structure model has been developed which treats the behaviour of soil and structure with equal rigour. The proposed numerical soil-structure model has been verified and validated by performing experimental shaking table tests. To achieve this goal, a series of experimental shaking table tests were performed on the physical fixed based (structure directly fixed on top of the shaking table) and flexible base (considering soil and structure) models under the influence of four scaled earthquake acceleration records and the results were measured. Comparing the experimental results with the numerical analysis predictions, it is noted that the numerical predictions and laboratory measurements are in a good agreement. Thus, the proposed numerical soil-structure model is a valid and qualified method of simulation with sufficient accuracy which can be employed for further numerical soil-structure interaction investigation studies. Based on the predicted and observed values of lateral deflections of fixed base and flexible base models, lateral deflections of the flexible base model have noticeably amplified in comparison to the fixed base model. As a result of the lateral deflection amplifications, it is observed that the performance level of the scaled structural model changed significantly which could be safety threatening.

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Section: Shaking Table Tests On Soil-structure Modelmentioning

confidence: 99%

Numerical and Experimental Investigations on Seismic Response of Building Frames under Influence of Soil-Structure Interaction

Tabatabaiefar

Fatahi

Samali

2014

Advances in Structural Engineering

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“…With the rapid development of industrialization, numerous investigations from different aspects have been carried out on the seismic behavior of antislide piles. In order to investigate the seismic characteristics of noncomposite piles, Valsangkar et al [10] performed shaking table tests on the seismic response of partially supported single piles and achieved earlier research time, accordingly. Moreover, Makris and Badoni [11] studied the nonlinear seismic response of single piles.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Influence of the Anchor Cable Inclination Angle on the Seismic Response Characteristics of Anchored Piles

et al. 2022

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Studies show that prestressed anchor cable antislide piles have good antiseismic characteristics. As an important parameter in the design of anchor-cable piles, the effect of anchor-cable inclination on the seismic response of the anchor-cable pile system has been rarely studied so far. In the present study, the seismic response characteristics of the anchor-pulled pile under different cable inclinations are studied using a large-scale seismic model test platform and numerical methods. The obtained results show that the inclined angle of the anchor cable has a great influence on the seismic response of the pile-anchor system. It is found that under the same seismic conditions, the axial force of the anchor cable becomes smaller as the anchor dip angle increases, while the pile top displacement becomes larger. The dynamic earth pressure behind the pile changes from the sliding surface to the pile top, indicating that the earth pressure near the sliding surface and the pile top is of active and passive earth pressure types, respectively. This pressure decreases with the increase of the anchor dip angle, thereby affecting the performance of the antisliding pile.

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“…Gohl and Finn (1987) states that even with the help of absorbent boundaries to reduce reflection, those boundaries may still cause additional modelling variables such as stiffness and friction of the layers. Valsangkar et al (1991) employed 25-mm thick Styrofoam (i.e., foam board) as the absorbing layers in their rigid container which were affixed to both end walls perpendicular to direction of shaking. Flexible containers allow the soil to move in equivalent to the free field ground motion in comparison with rigid containers (Lu et al, 2004;Moss et al, 2010).…”

Section: Earthquake Simulation Using Shaking Tablementioning

confidence: 99%

Evaluation of Seismic Behaviour of Hollow Fibre-Reinforced Polymer (FRP) Piles using Shake Table Testing

Hosseini¹

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This study aimed at investigating the seismic performance of hollow FRP piles compared to traditional piles in fine sand and soft clay deposits using shaking table tests. A laminar shear box with a dimension of 1.0 m × 1.0 m and a depth of 1.0 m was employed to contain the soil medium and allow the soil to respond in the same fashion as the free field. Two types of composite group piles (2×2) made of Carbon Fibre-Reinforced Polymer (CFRP) and Glass Fibre-Reinforced Polymer (GFRP) along with a series of Aluminium piles were manufactured and embedded as frictional and end-bearing piles within the soil. Several monitoring instruments were used to observe the soil-pile response under variety of ground motions adopted from the 2010 Val-des-Bois Earthquake in Canada and the 1995 Kobe Earthquake.Seismic response of the foundation was strongly dependent on the stiffness provided by the soil, which was a function of the degree of softening and intensity of shaking. In both soil Dedicated to my dear parents and my brothers…….v AcknowledgementsFirst and foremost, I would like to express my respect and gratitude to my supervisor, Professor Mohammad Rayhani, who has been a tremendous teacher, and mentor throughout my graduate studies at Carleton University. I will be forever grateful for his constant support, guidance, motivation, and patience throughout this work. I would like to thank my thesis examination committee Professor Charles-

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Shake table studies of seismic response of single partially supported piles

Cited by 9 publications

References 0 publications

Numerical and Experimental Investigations on Seismic Response of Building Frames under Influence of Soil-Structure Interaction

Numerical and Experimental Investigations on Seismic Response of Building Frames under Influence of Soil-Structure Interaction

Experimental Investigation of the Influence of the Anchor Cable Inclination Angle on the Seismic Response Characteristics of Anchored Piles

Evaluation of Seismic Behaviour of Hollow Fibre-Reinforced Polymer (FRP) Piles using Shake Table Testing

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