Dynamic Interaction Between Rigid Surface Foundations on Multi-Layered Half Space

Lin, Chun-Ting

doi:10.1142/s0219455415500042

Cited by 16 publications

(7 citation statements)

References 36 publications

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“…Chen [11] calculated the dynamic reaction by the numerical approach technique for a bunch of solid surface foundations. The formulation is completely stable and computationally simple with algebraic calculations.…”

Section: Introductionmentioning

confidence: 99%

Dynamic response of a footing adjacent to dynamically loaded footing on gypseous soil

Al-Ezzi

Zakaria

2020

SN Appl. Sci.

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This paper presents an experimental study on the dynamic response of a circular foundation, underneath the have an impact on of a dynamic load that outcomes from the placement of a neighbouring footing said as (vibration source), having square-shaped and excited by way of a known source of vibration placed on top of it. The cause is to evaluate the effect of dynamic motion closely by group called the second foundation. Both foundations were founded on collapsible soil (gypseous soil) with a content of gypsum 65%. The research is conducted in dry and soaked conditions with an oversized experimental programme. The first base (source vibration) and also the second base are made of steel, with the size of 80 × 80 × 40 and the circular shape of 80 mm diameter. Subsequently, the soil had been prepared in layers in steel containers with 1000 × 500 × 500 mm, then the two foundations positioned centrally over the underside. The first footing excited by the rotating mass type mechanical oscillator to come back up with vertical harmonic loading, produces a related have an impact on of dynamic loads and also the 2nd base is loaded with only static weight under dynamic excitement. The checks are conducted beneath dynamic response for 3 frequencies (12,18,24) Hz, Displacement amplitude and acceleration of the 2nd foundation are examined, at a special distance between the inspiration (2B, 4B, 6B). The results have shown that when the space between the inspiration increases, the amplitude and also the acceleration for the second foundation decreases. Furthermore, the value of these parameters at dry condition is larger than their value at soaked states.

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Section: Introductionmentioning

confidence: 99%

Dynamic response of a footing adjacent to dynamically loaded footing on gypseous soil

Al-Ezzi

Zakaria

2020

SN Appl. Sci.

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“…In the assessment it is separated in several sub-square-regions from the foundation-footing interface. By using the Green feature acquired through the transform and accurate integration method of Fourier-Bessel, the dynamic reaction of each sub-region is calculated [12].…”

Section: Introductionmentioning

confidence: 99%

The Action of Vibrating Foundation on Adjacent Static – Load Foundation Having Rectangular Shape

El-ezzi¹,

Zakaria²

2020

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This paper presents an experimental study on the dynamic response of the rectangular foundation, under effect of dynamic load which results from an adjacent footing called (the source of vibration), having square shape and excited by a well-known source of vibration put on the top it. The purpose being to study the effect of dynamic motion on a nearby foundation called a second foundation. Both foundations are founded on collapsible soil (gypseous soil) with a content of gypsum 60%. The research is conducted in dry and soaked conditions with a large experimental program. The first basis (source vibration) and the second footing are made out of steel, respectively in the sizes (80x80x40), (160x40x40) mm with (L/ B= 4). After that the soil had been prepared in layers in steel containers with (1000x 500x500) mm, then the two foundations positioned centrally over the ground. The first footing excited by the rotating mass type mechanical oscillator to generate vertical harmonic loading, produces a comparable impact of dynamic loads and the second footing is loaded with only static weight under dynamic excitement. The tests were conducted under dynamic response for three frequencies (10, 20, 30) Hz, Displacement amplitude and acceleration of the second foundation were determined, at a different distance between the foundation (2B, 4B, 6B). The results have shown that, when the distance between the foundation increases, the amplitude and the acceleration for the second foundation decreased. Furthermore, the value of these parameters at dry state is higher than their value at soaked state.

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“…Most methods for studying the dynamic SSI in the layered medium can be divided into four types as follows: the finite element method (FEM) 4 ; the boundary element method (BEM) [5][6][7][8][9][10] ; the semi-analytical method [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] ; the approximation methods by using simplified hypotheses or physical models. [27][28][29][30] The semi-analytical method is based on the discretization of the soil-foundation interface and the Green function.…”

Section: Introductionmentioning

confidence: 99%

Transient analysis of three‐dimensional dynamic interaction between multilayered soil and rigid foundation

Han

Yang

Fang

et al. 2020

Numerical Meth Engineering

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The study of dynamic soil‐structure interaction is significant to civil engineering applications, such as machine foundation vibration, traffic‐induced vibration, and seismic dynamic response. The scaled boundary finite element method (SBFEM) is a semi‐analytical algorithm, which is used to solve the dynamic response of a three‐dimensional infinite soil. It can automatically satisfy the radiation boundary condition at infinity. Based on the dynamic stiffness matrix equation obtained by the modified SBFEM, a continued fraction algorithm is proposed to solve the dynamic stiffness matrix of layered soil in the frequency‐domain. Then, the SBFEM was coupled with the finite element method (FEM) at the interface to solve the dynamic stiffness matrices of the rigid surface/buried foundation. Finally, the mixed‐variable algorithm was used to solve the three‐dimensional transient dynamic response of the foundation in the time domain. Numerical examples were performed to verify the accuracy of the proposed algorithm in solving the dynamic stiffness matrix of the infinite domain in the frequency domain and the dynamic transient displacement response of the foundation in the time domain. Compared with the previous numerical integration technique, the dynamic stiffness matrix in the frequency domain calculated by using the proposed algorithm has higher accuracy and higher efficiency.

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Dynamic Interaction Between Rigid Surface Foundations on Multi-Layered Half Space

Cited by 16 publications

References 36 publications

Dynamic response of a footing adjacent to dynamically loaded footing on gypseous soil

Dynamic response of a footing adjacent to dynamically loaded footing on gypseous soil

The Action of Vibrating Foundation on Adjacent Static – Load Foundation Having Rectangular Shape

Transient analysis of three‐dimensional dynamic interaction between multilayered soil and rigid foundation

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