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Soil structure interaction

About: Soil structure interaction is a research topic. Over the lifetime, 3653 publications have been published within this topic receiving 48890 citations.


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TL;DR: In this article, a simplified solution procedure is proposed for estimating the dynamic response of a pile group partially embedded in a layered saturated soil and subjected to horizontal harmonic loading, based on the dynamic interaction factor, the horizontal impedance of the pile group is obtained by using the superposition principle.
Abstract: A simplified solution procedure is proposed for estimating the dynamic response of a pile group partially embedded in a layered saturated soil and subjected to horizontal harmonic loading. In the proposed procedure, the transfer matrix method is first applied to solve the vibration equation of a single pile, from which the stiffness of the single pile is obtained. The existing lateral displacement of the saturated half-space is introduced to build the attenuation function, and the balance equation of passive pile is built accordingly. The simple Winkler model is used to derive the dynamic pile-soil-pile interaction factor. Based on the dynamic interaction factor, the horizontal impedance of the pile group is obtained by using the superposition principle. The calculated dynamic interaction factor and impedance of the pile group are in agreement with earlier results for an idealized case, verifying the correctness of the proposed method. The main parameters, such as the embedment ratio, pile separat...

32 citations

Journal ArticleDOI
TL;DR: In this article, a finite element modelling of the plane frame-combined footing-soil system, subjected to biaxial loading has been discussed, where the formulation of an isoparametric interface/joint element is used to model the interface characteristics of the foundation beam and the soil medium.

32 citations

Journal ArticleDOI
TL;DR: In this paper, the analysis of full-height bridge abutments on pile foundations, installed through soft soils, with a commercially available finite element software and soil model is presented.

32 citations

01 Jan 2004
TL;DR: In this paper, a thorough state-of-the-art on the soil-structure-interaction issues of integral bridges and culverts is provided, focusing on the earth pressure behind integral-bridge abutments.
Abstract: A thorough state of the art on the soil-structure-interaction issues of integral bridges and culverts is provided, focusing on the earth pressure behind integral-bridge abutments. The procedure of the Swedish design code for estimating the earth pressure response to integral bridge abutment movement is found to be conservative compared to the one of the British code and to some recent experimental studies. The influence of soil stiffness and different ways of acquiring this parameter are discussed. Upon comparison of several methods for the determination of the elasticity modulus of soil, it can be concluded that the E s values of Duncan et al.'s SCI method are much more conservative than the E t values by Duncan et al.'s hyperbolic equation and Pettersson et al.'s Method 2. Also, there are significant differences between that Method 2 and Lehane et al.'s and Lade et al.'s methods. The results of the bending moment calculations done on three culverts with different height-to-span ratios suggest that live-load moments are very sensitive to the stiffness of the backfill soil. The bending moments due to live loads are also sensitive to cover depths. For low covers, the moments are much more sensitive to changes in cover depth. This demonstrates how and when arching effects actually take place. The moment calculations for a typical slab-frame bridge reveal that the moments at the abutment front are reduced significantly as the soil stiffness changes from very low to high. The effect of change of the parameter in the passive soil-response formula of the Swedish bridge design code on moments is also significant.

32 citations

01 Sep 2007
TL;DR: In this article, a study on probabilistic performance evaluation methodologies, development of a multiplatform and hybrid simulation framework, verifications of numerical models of structural and geotechnical systems in comparison with measured data, and the derivation of fragility curves of a bridge in Central and Eastern United States.
Abstract: This report presents research on the probabilistic seismic performance evaluation of a structural-geotechnical interacting system. The system comprises a bridge, its foundation, and the supporting soil. The investigation includes a study on probabilistic performance evaluation methodologies, development of a multiplatform and hybrid simulation framework, verifications of numerical models of structural and geotechnical systems in comparison with measured data, and the derivation of fragility curves of a bridge in Central and Eastern United States. Seismic performance evaluation procedures are studied using a benchmark threestory, reinforced concrete (RC) building structure. Three probabilistic performance evaluation methods are applied: the Monte Carlo simulation, response surface, and SACFEMA methods. The analysis of benchmark structure shows that the effect of random variability in structural materials is small compared to the effect of input ground motion. When Peak Ground Acceleration (PGA) is used as an intensity measure, the derived vulnerability curves highly depend on ground motion sets. Three different simulation methods results in similar vulnerability curves. The computational cost are the most expensive when the Monte Carlo simulation is adopted. Methodologies for soil-structure-interaction analysis are introduced, including the newly developed multiplatform, multiresolution hybrid simulation framework. These methodologies and numerical models of soil-structure-interaction systems are verified through comparison with field measurements and experimental results. The soil-structure interacting system is verified through analyses of a heavily instrumented bridge which recorded several sets of ground motions. The verification study of soil-structure interacting system shows that detailed and meticulously developed analytical models are capable of replicating measurements of the response of complex bridge systems subjected to strong ground motion. Seismic vulnerability curves of a reference bridge in the Central and Eastern United States (CEUS) are derived employing the aforementioned methods with and without soilstructure interaction. A typical highway over-crossing bridge representing one of the most common bridge types in the CEUS is selected. Four different approaches of SoilStructure Interaction (SSI) are tried: (a) Abutments and foundations are assumed to be fixed, (b) Conventional lumped spring approaches are adopted to model abutments and foundations, (c) Lumped springs for abutments and foundations are estimated from Finite Element (FE) analysis of geotechnical system, and (d) Multiplatform simulation is conducted. All four of the methods shows that abutment bearings in transverse direction are most vulnerable components. Failure probability of the bridge system is highly dependent on the failure probability of abutment bearings. Considering that simplified methods for SSI analysis include larger assumptions than fully coupled methods and that the multiplatform simulation is verified with measured responses from instrumented bridge, the use of multiplatform simulation is suggested if computational power and resources for FE modeling are affordable.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202378
2022179
2021209
2020174
2019182
2018190