Three-Dimensional Response of Neighboring Buildings Sitting on Pile Foundations to Seismic Pounding

Fatahi, Behzad; Nguyen, Quoc Van; Xu, Ruoshi; Sun, Wei

doi:10.1061/(asce)gm.1943-5622.0001093

Cited by 67 publications

(22 citation statements)

References 36 publications

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“…For example, Hokmabadi et al [42] studied the effects of soil-pile-structure interaction (SPSI) based on finite element analysis and concluded that the impact of SPSI should not be neglected in structural design. Fatahi et al [43] investigated that the influence of the separation gap on the seismic response of midrise buildings supported on piles with the seismic soil-pile-structure interaction (SSPSI) is considered based on the three-dimensional numerical modeling method. However, the construction cost of plie foundations is also much higher than the shallow foundations.…”

Section: Discussionmentioning

confidence: 99%

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The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

Wang

2020

Mathematical Problems in Engineering

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The structural damping ratio, structural quality, yield strength, and elastic modulus of section steel, compressive strength, elastic modulus of concrete, yield strength, and elastic modulus of steel bars play important roles in the stability of the steel-reinforced concrete (SRC) frame structure, which are usually uncertain. However, their importance influence on the different seismic demands of SRC is rarely investigated simultaneously. In order to investigate the effects of the above parameters on four seismic demands (i.e., the top displacement, the maximum floor acceleration, the base shear force, and the maximum interstory displacement angle) of SRC frame structures, the orthogonal polynomial estimation method is first applied to the importance analysis of structural seismic demand based on the moment-independent method. Two engineering examples are performed to verify the accuracy and efficiency of the proposed method. The results have the characteristics of fast convergence and are in good agreement with those obtained by the moment-independent method based on kernel density estimation. The variance importance index based on Monte Carlo (MC) method is also calculated for comparison. The influence of each random variable on the four structural seismic demands is basically the same. Therefore, the accuracy and efficiency of the proposed method are proved sufficiently.

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Section: Discussionmentioning

confidence: 99%

“…e aforementioned references have shown that the influence of soil-pile-structure interaction (SPSI) should be considered in the structural design because it will amplify the overall seismic response of the building, especially the lateral and interstory displacements [43].…”

Section: Discussionmentioning

confidence: 99%

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

Wang

2020

Mathematical Problems in Engineering

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“…Hokmabadi et al (2014) suggested that the nonlinear dynamic response is required to capture the time-history output of the soil-foundation-structure interaction. Hence, several studies were conducted using the direct calculation method, in which nonlinear time history analyses were performed of whole soil foundation structure systems using ABAQUS (Fatahi et al, 2018;Nguyen et al, 2016;Nguyen et al, 2016). Nguyen et al, ( 2016) studied the effect of raft foundation size on behaviour of a moment-frame structure modelled using ABAQUS software.…”

Section: Finite Element Modellingmentioning

confidence: 99%

Validation of a finite element modelling approach on soil-foundation-structure interaction of a multi-storey wall-frame structure under dynamic loadings

Qaftan

Toma‐Sabbagh

Weekes

et al. 2020

Soil Dynamics and Earthquake Engineering

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“…These springs are only activated once the expansion joint is closed and the deck makes contact with the abutment. The expansion joint is modelled using a gap element with an opening of 0.3 m and compressive stiffness equal to the stiffness of the deck [14]. Furthermore, the elastomeric bearings are modelled with multi-linear plastic springs with horizontal stiffness given by eqn (1) [2]:…”

Section: Numerical Modelmentioning

confidence: 99%

Impacts of Transverse Earthquakes on Seismic Response of Bridges With Rocking Foundations and Various Shear Keys

El-Hawat

Fatahi

Mosavi

2020

WIT Transactions on the Built Environment

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Rocking foundations are proven to be an effective base isolation technique that improves the seismic performance of bridges and minimises the damage at the piers during large earthquakes. However, due to the foundations ability to uplift, the subsequent reduction of the pier's stiffness leads to larger column drifts and deck displacements. This not only attracts larger stresses to the transverse direction of the deck, but also at the abutment which, if not carefully considered, can lead to severe damages. Therefore, this study will investigate the seismic response of bridges with rocking pile foundations subjected to transverse earthquake excitations and compare it to the response of conventional fixed base bridges. Two separate shear key performance levels are investigated for each bridge: (1) non-linear shear keys that break off; and (2) shear keys that remain rigid. 3D numerical models of the bridges are developed using finite element software with consideration of soil-structure interaction. Moreover, non-linear time history analyses are performed on the bridges using four ground-motion records, where their dynamic response are then compared. Results show that the conventional bridges collapsed due to the development of plastic hinging at the piers. However, the bridges with the rocking pile foundations experienced significant deck displacements which caused flexural plastic hinging of the deck and the subsequent collapse of the bridge. Moreover, when the shear keys failed, the deck experienced large displacements at the abutment which caused the bearing to rupture and displace permanently with the risk of unseating and span failure. Bridges with this foundation system will require additional design provisions to prevent such failures from occurring.

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Three-Dimensional Response of Neighboring Buildings Sitting on Pile Foundations to Seismic Pounding

Cited by 67 publications

References 36 publications

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

The Moment-Independent Importance Analysis of Structural Seismic Requirements Based on Orthogonal Polynomial Estimation

Validation of a finite element modelling approach on soil-foundation-structure interaction of a multi-storey wall-frame structure under dynamic loadings

Impacts of Transverse Earthquakes on Seismic Response of Bridges With Rocking Foundations and Various Shear Keys

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