Static Soil–Structure Interaction Effects in Seismic-Isolated Bridges

Dicleli, Murat; Albhaisi, Suhail; Mansour, Mohamad

doi:10.1061/(asce)1084-0680(2005)10:1(22)

Cited by 24 publications

(6 citation statements)

References 6 publications

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“…In 1995, Zayas et al [6] performed a finite element analysis of the seismic response of industrial storage tanks with FPB, and the results showed that FPB can not only reduce the risk of leakage or damage to the structure during an earthquake but also make the structure design more economical and reasonable. Dicleli [7,8] and Ingham [9] investigated the use of FPB for bridges in terms of strengthening techniques and economic benefits. The results showed that FPB can effectively attenuate seismic effects and is less costly than conventional structural ring springs, which were initially common in various mechanical components, such as artillery automatic floaters, slab casters buffers, and machine gun launchers [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Research on the Seismic Isolation Effect of the Ring Spring–Friction Pendulum Bearing in the Dakai Underground Subway Station

Zhang

Jia

2023

Applied Sciences

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During strong earthquakes, the vertical seismic force becomes an essential factor affecting shallow underground structures that cannot be ignored. In this situation, it is proposed that ring spring–friction pendulum two-way seismic isolation bearings be set up at the bottom of such structures. Targeting the Dakai underground station and the Kobe earthquake, a soil-structure force model was established based on the damage to the underground structure and dynamic simulation was carried out using Abaqus software. The advantages of the ring spring–friction pendulum bearing over the ring spring bearing alone and the friction pendulum bearing alone were compared. The simulation results showed that the structure displayed a good seismic isolation effect in both horizontal and vertical directions after setting the ring spring–friction pendulum bearing. The deflection in the midspan of the roof reduced to less than 5 cm, the horizontal relative displacement of the structure reduced to less than 3 cm, there was no obvious damage to the structure, the axial pressure ratio of the mid-pillar reduced to less than 0.5, the axial force on the mid-pillar reduced by more than 50%, and the shear force reduced by more than 30%. In addition, by comparing the damage to the structure after setting the annular spring bearing and the friction pendulum bearing, we found that a vertical seismic isolation device is more crucial than a horizontal seismic isolation device for shallow underground structures. Setting a vertical damping device can make the structure retain part of the ductility and reduce the damage to the structure, so the ground vertical seismic mitigation design should be strengthened when a shallow underground structure is designed.

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Section: Introductionmentioning

confidence: 99%

Research on the Seismic Isolation Effect of the Ring Spring–Friction Pendulum Bearing in the Dakai Underground Subway Station

Zhang

Jia

2023

Applied Sciences

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“…Piles are often used in groups and the load transfer mechanism in group piles is generally different from that of a single pile due to the pile-soil and pile-pile interaction effects which has been described by previous researchers [1][2][3][4][5][6][7]. Previous studies indicated that the interaction between soil and structure has a significant effect on the responses of foundation and structure [8][9][10][11]. The pile-soil-pile interaction is a complicated phenomenon which can be significantly influenced by many factors, such as the load-deformation properties and the shear strength characteristics of both pile and surrounding soils.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Axially Loaded Pile Group Near a Sloping Ground

Alinejad

Bayat²,

Nadi³

et al. 2023

Period. Polytech. Civil Eng.

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Understanding the axial loading response of pile group located near the crest of the slope is of practical value to structural design. In this paper, a large-scale test setup (1.8 m × 0.90 m × 0.90 m) has been developed to investigate the response of pile group (2 × 2) located near the crest of the slope under axial loading. This paper presents a series of physical modelling tests performed to investigate the effects of slope angles, distance of the pile group from the slope crest, embedment length of the pile group and pile diameter on the axial loading response of pile groups. The results show that the response of pile group located near the crest of the slope approaches to the level ground condition with increasing edge distance from slope crest. In addition, the horizontal displacement of pile group towards the slope face increases with decreasing distance of pile group from the slope crest or embedded length of piles or with increasing slope angle. Furthermore, increasing pile diameter results in a low increase in the horizontal displacement for edge distances less than 3 dp (dp = pile diameter). However, the horizontal displacement is almost independent of pile diameter at edge distances greater than 3 dp. Higher embedded length results in the response of pile group approaches to the response of pile group located on the level ground at a shorter edge distance from the slope crest.

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“…Until recently, the general concession between engineers and researchers was that the soil structure interaction (SSI) effects are beneficial to the response of structures because SSI provides additional flexibility and damping to the structures or naturally isolates them from the shaking ground [7]. In the field of seismic behavior of isolated structures, many studies [6][7][8][9][10][11][12][13][14][15] have investigated the effect of SSI on continuous bridges isolated with rubber bearings. Considering the previous studies on SSI effects on base isolated structure, it is clear that very limited research has been done on SSI effect on seismic behavior of multi-degree-freedom structure isolated with FPS.…”

Section: Introductionmentioning

confidence: 99%