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

Tabatabaiefar, S. Hamid Reza; Fatahi, Behzad; Samali, Bijan

doi:10.1260/1369-4332.17.1.109

Cited by 65 publications

(34 citation statements)

References 22 publications

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“…The experimental investigation in this shaking table test that the base acceleration is larger than the free field, consists with the results of 1985 Mexico City earthquake and 2011 Christchurch earthquake. The results from these earthquakes illustrate that the ground motions can be obviously amplified at the bottom of the structure …”

Section: Experimental Results Of Pssi System In a Soft Sitementioning

confidence: 95%

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Large‐scale shaking table test on pile‐soil‐structure interaction on soft soils

Yang

Lü

2019

Structural Design Tall Build

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SUMMARY The two large‐scale shaking table tests of tall buildings on soft soils in pile group foundations are performed to capture the effect of the seismic pile‐soil‐structure interaction (PSSI) on the dynamic responses of the pile, soil, and structure. The two different model conditions are observed, including a fixed‐base structure and a structure supported by 3‐by‐3 pile group foundation in soft soil, representing the situations excluding the soil‐structure interaction (SSI) and considering the SSI, respectively. In the tests, the superstructure is a tall building with 12‐story reinforced concrete frame. The pile‐soil‐structure system rests in a shear laminar soil container, which is designed to minimize the boundary effects during shaking table tests. The two models are subjected to various intensity seismic excitations of Shanghai bedrock waves, 1995 Kobe earthquake, and 1999 Chi‐Chi earthquake events. According to the experimental and analytical results, SSI systems have longer natural periods than the fixed‐base structure. In addition, soft soil has amplification effect under smaller seismic excitations and isolation effects under larger earthquake intensities. The strain amplitude at the top of pile is large, and the strain at the middle and tip is relatively small. Whereas the contact pressure is small at the top of pile and large at the middle and tip. From the dynamic responses of the superstructure, it is found that the PSSI amplifies the peak displacements and interstory drifts of the structures supported by pile group foundations by comparing with the fixed‐base structure. Whereas the peak acceleration and interstory shear force of the structure are reduced considering seismic PSSI. The results show that the seismic SSI is not always favorable, however, it may increase certain dynamic responses of the structure. Consequently, the seismic SSI should be considered reasonably, providing insight towards the rational seismic design of buildings rested on soft soils.

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Section: Experimental Results Of Pssi System In a Soft Sitementioning

confidence: 95%

“…Some codes for seismic design of buildings ignore SSI effect on the structure, because SSI effect is beneficial to the seismic responses of the structure. However, the lateral displacements and interstory drifts of a structure supported on soft soils may be amplified when SSI is considered …”

Section: Introductionmentioning

confidence: 99%

Large‐scale shaking table test on pile‐soil‐structure interaction on soft soils

Yang

Lü

2019

Structural Design Tall Build

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“…Adopting an appropriate geometric scaling factor λ, is one of the important steps in scale modelling of shaking table test [3]. The specifications of Sakarya University shaking test table are shown in Table I.…”

Section: Geometric Scaling Factor and Structural Model Designmentioning

confidence: 99%

“…Tabatabaiefar et al [3,4] investigated structural behaviour of building structures under the influence of SSI. Li et al [5] conducted shaking table test of a 1:20 scaled model of a typical reinforced concrete (RC) residential building in Hong Kong.…”

Section: Introductionmentioning

confidence: 99%

Scaled Soil-Structure Interaction Model for Shaking Table Testing

2017

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The primarily goal of this study is to reveal a scaled soil-structure interaction model for small capacity shaking table testing instead of the full-scale field experiments. The prototype of soil-structure interaction system with frame-type building, resting on a sandy soil with shear wave velocity of 536 m/s and unit weight of 12.9 kN/m 3 has been selected. For experimental investigations, the realistic site and building structures are scaled with a geometric scaling factor of 1:45. The test model, consisting of six-story steel frame-type building, natural soil and laminar soil container, is designed and constructed to realistically simulate the seismic soil-structure interaction effects of building structures in shaking table tests. In order to verify the geometric scaling factor, the dynamic properties of the fixed-base system for both prototype and scaled model are determined by using finite element analysis. Furthermore, the dynamic parameters for scaled model of a single layer soil, restricted with base-rock, have been compared numerically with the proposed laminar soil container, to provide a good agreement.

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“…These include compressive face sheet failure, face sheet debonding, indentation failure and core failure and face sheet wrinkling. In concrete construction, self-weight of structure itself represents a very large proportion of the total load on the structures [15][16][17]. Thus, reduction in the self-weight of the structures by adopting an appropriate approach results in the reduction of element cross-section, size of foundation and supporting elements thereby reduced overall cost of the project.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of sandwich panels constructed from polystyrene/cement mixed cores and thin cement sheet facings

Tabatabaiefar

Mansoury

Zand

et al. 2015

Jnl of Sandwich Structures & Materials

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Sandwich panels are made of two materials that are relatively weak in their separated state, but are improved when they are constructed together in a sandwich panel. Sandwich panels can be used for almost any section of a building including roofs, walls and floors. These building components are regularly required to provide insulation properties, weatherproofing properties and durability in addition to providing structural load bearing characteristics. Polystyrene/cement mixed cores and thin cement sheet facings sandwich panels are Australian products made of cement-polystyrene beaded mixture encapsulated between two thick cement board sheets. The structural properties of sandwich panels constructed of polystyrene/cement cores and thin cement sheet facings are relatively unknown. Therefore, in this study, to understand the mechanical behaviour and properties of those sandwich panels, a series of experimental tests have been performed and the outcomes have been explained and discussed. Based on the results of this study, values for modulus of elasticity and ultimate strength of the sandwich panels in dry and saturated conditions have been determined and proposed for practical applications.

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

Cited by 65 publications

References 22 publications

Large‐scale shaking table test on pile‐soil‐structure interaction on soft soils

Large‐scale shaking table test on pile‐soil‐structure interaction on soft soils

Scaled Soil-Structure Interaction Model for Shaking Table Testing

Mechanical properties of sandwich panels constructed from polystyrene/cement mixed cores and thin cement sheet facings

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