Effect of Soil-Structure Interaction on the Seismic Response of Existing Low and Mid-Rise RC Buildings

Öz, İbrahim İlker; Şenel, Şevket Murat; Palancı, Mehmet; Kalkan, Ali

doi:10.3390/app10238357

Cited by 36 publications

(20 citation statements)

References 16 publications

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“…For example, a study on instrumented buildings in California (USA) showed that the torsional responses of the supporting structure and/or the in-plane flexibility of floor diaphragms can increase by not negligible factors the seismic-induced force demands on elastic acceleration-sensitive non-structural components . Similarly, it is known that soil-structure interaction (SSI) can affect the acceleration response of the buildings (e,g, Karapetrou et al, 2015;Karatzetzou et al, 2015;de Silva et al, 2019;Fathi et al, 2020;Oz et al, 2020, Hamidia et al, 2021Brunelli et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Validation of a practice-oriented floor spectra formulation through actual data from the 2016/2017 Central Italy earthquake

Abbati

Cattari

Lagomarsino

2022

Preprint

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Analytical expressions for the floor spectra evaluation play a key role for a correct definition of the seismic input induced to non-structural elements or local mechanisms in existing buildings. They have to be able to properly assess the possible amplification phenomena, but also to correctly describe the effects of nonlinearities due to structural damage. Due to the complexity of such phenomena, data on existing structures hit by earthquakes constitute a precious source for a better understanding of the topic and the validation of analytical expressions. In this framework, the paper aim is twofold. On one hand, it evaluates the entity of seismic amplification through experimental evidence from in-situ measurements on existing monitored structures. On the other hand, it presents the application of an analytical expression for the floor spectra already developed by the Authors to two unreinforced masonry (URM) buildings. The case-studies are the former Fabriano courthouse (Ancona, Italy) and the Pizzoli’s town hall (L’Aquila, Italy). They were both hit by the 2016/2017 earthquake in Central Italy and are permanently monitored by the Italian seismic monitoring system of the Italian Department of Civil Protection (DPC). With the aim of the validation, the paper shows the comparison between experimental and analytical floor spectra for various minor events and mainshocks of the Central Italy earthquake. Since the two case-studies exhibited different damage level (from slight to moderate, respectively), the comparison allowed to verify the reliability of the expression both in the pseudo-elastic and moderate nonlinear fields.

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Section: Introductionmentioning

confidence: 99%

Validation of a practice-oriented floor spectra formulation through actual data from the 2016/2017 Central Italy earthquake

Abbati

Cattari

Lagomarsino

2022

Preprint

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“…Moreover, Ref. [21] investigated the effects of SSI on several residential RC buildings with different capacity design principles founded on four different soil conditions and applying 20 acceleration records. Furthermore, Ref.…”

Section: Introductionmentioning

confidence: 99%

A Novel Framework to Assess Soil Structure Interaction (SSI) Effects with Equivalent Fixed-Based Models

Forcellini

2021

Applied Sciences

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Soil structure interaction (SSI) effects have been extensively studied with advanced numerical simulations even if these approaches are time consuming and require much effort to perform. In particular, when SSI models are compared with fixed based ones, two main effects need to be considered: period elongation and damping increase. The paper proposes numerical models to build fixed based models calibrated on these two parameters and perform complex SSI analyses. A new framework that may be used to assess SSI with equivalent fixed-based models is herein presented and validated with non-linear dynamic numerical simulations. Opensees was performed to reproduce non-linear numerical simulations by considering hysteretic materials and advanced soil models.

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“…The seismic behavior of a building is directly related to the interaction between the three interconnected systems, which are superstructure, foundation and soil medium surrounding the foundation system [1]. The most significant increase in drift demands occurred in first stories and the results corresponding to fixed-base, stiff and moderate cases are closer to each other with respect to soft soil cases [2] indicated that effect of soil-structure interaction on the seismic performance of new buildings is limited with respect to old buildings [3] examined the seismic performance of empirical buildings with SSI [4] and showed that the seismic performance of buildings varied significantly depending on the soil conditions. The site amplification values estimated by considering the local depth of the bedrock surface layer were generally smaller than the seimic accelaration amplification values from the Indonesian seismic building code 1726-2012, there appears to exist a tendency of lower levels of amplification mean regression, in particular for the soft soil site class according to Delfebriyadi et al [5].…”

Section: Introductionmentioning

confidence: 99%

Seismic Response for Building Frames in the Wetlands Area

Anon¹,

Tjitradi²,

Taufik³

et al. 2021

International Journal of Civil Engineering and Technology (Ijciet)

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The objective of this paper is to perform the design practice for the structures of stilt building construction, based on the seismic design methodology. Firstly, the design requirements and design constraints are determined according to the site of the building within the Banjarmasin city of the wetlands area and compared with the other zones. Based on the latest Indonesia earthquake design code, the city of Banjarmasin is in the lightest earthquake hazard area so it is considered to neglect the seismic load in earthquake resistance. Actually, South Kalimantan region, mostly as wetland area, has experienced earthquakes several times. On the entire area, the land has a soft soil condition which has the potential to damage buildings in the event of an earthquake due to the amplification of earthquake vibrations. Then, a practical design chart of the basic earthquake load response spectrum has been analyzed. Apart from that, a design practice of varying soil strata is generally considered by the latest code for earthquake engineering design SNI-1726SNI- -2019 The results indicate that the earthquake response spectrum design charts for all areas in the low risk zone, as the soft soil ground strata, affected into the seismic load design of earthquake force should be taking into account for design practice. The base shear for the stilt structure of multy story building should be designed as approximately one thirteith of total weight of the building structure.

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Effect of Soil-Structure Interaction on the Seismic Response of Existing Low and Mid-Rise RC Buildings

Cited by 36 publications

References 16 publications

Validation of a practice-oriented floor spectra formulation through actual data from the 2016/2017 Central Italy earthquake

Validation of a practice-oriented floor spectra formulation through actual data from the 2016/2017 Central Italy earthquake

A Novel Framework to Assess Soil Structure Interaction (SSI) Effects with Equivalent Fixed-Based Models

Seismic Response for Building Frames in the Wetlands Area

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