Seismic response of irregular multi-storey buildings with flexible inelastic diaphragms

Masi, Angelo; Dolce, Mauro; Caterina, F.

doi:10.1002/(sici)1099-1794(199706)6:2<99::aid-tal81>3.0.co;2-x

Cited by 11 publications

(4 citation statements)

References 1 publication

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“…One should derive that a single strength value cannot be representative of more than one storey, which represents the maximum extent of the so-called homogenous areas. Indeed, in some cases, more homogenous areas should be set for a single storey, so that any possible irregularity in the plan due to the concrete strength variability [28,29] is not neglected. Moreover, also in the case of seismic evaluation, dealing with high within-storey variability using the mean value could be not on the safe side due to the different role of concrete strength in determining the capacity of structural members (e.g., ductile versus fragile members).…”

Section: Analysis Of Within-building Variabilitymentioning

confidence: 99%

Analysis of a Large Database of Concrete Core Tests with Emphasis on Within-Structure Variability

2019

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In reinforced concrete (RC) structures, the compressive strength of concrete can play a crucial role in seismic performance and is usually difficult to estimate. Major seismic codes prescribe that concrete strength must be determined essentially from in situ and laboratory tests. Mean values obtained from such tests are the reference design values when assessing existing structures under seismic actions. The variability of concrete strength can also play an important role, generally requiring that various homogeneous domains are identified in a single structure, in each of which a specific mean value should be assumed as representative. This study analyzes the inter- and intra-variability of the concrete strength of existing buildings using a very large database made up of approximately 1600 core tests extracted from RC buildings located in the Basilicata region (Southern Italy). The analysis highlighted that concrete strength variability was dependent on the structures’ dimensions as well as on the number of storeys. Moreover, the concrete strength of cores extracted from columns was found to be, on average, lower than that from beams, thus justifying the usual practice to extract cores mainly from columns, which results in a conservative approach as well as a more feasible one. Finally, some case studies were analyzed, specifically focusing on the effects of the within-storey variability. Conservative strength values, to be used especially in the case of vertical members subjected to high axial loads, are suggested.

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Section: Analysis Of Within-building Variabilitymentioning

confidence: 99%

Analysis of a Large Database of Concrete Core Tests with Emphasis on Within-Structure Variability

2019

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“…According to technical literature [28,22], and to the classical theory of structural dynamics, the performance of this building class in terms of both static and dynamic behavior can be well represented by 2D models. If the slabs exhibit sufficiently in plan stiffness to be modeled as rigid [30] and the structure is regular both in plan and elevation the seismic action is uniformly distributed to all frames. In this hypothesis an adequate pseudo 3D model can be obtained defining by a 2D-model in which all the plane frames present in the related direction are lined up and slaved at each floor [28].…”

Section: Modelling and Properties Of Rc Framesmentioning

confidence: 99%

Evaluation of the infill influence on the elastic period of existing RC frames

Perrone

Leone

Aiello

2016

Engineering Structures

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“…Abrupt discontinuity is said to exist with the presence of a cut-out or open areas that is Ͼ50% of the gross enclosed diaphragm area and variation in stiffness is said to exist when there is a changes in effective diaphragm stiffness of more than 50% from one story to the next. This problem is more severe with flexible diaphragms (Masi et al 1997). Thus, in this paper, for rigid diaphragms, diaphragm action is neglected.…”

Section: Diaphragm Continuity (Dc)mentioning

confidence: 99%

Seismic Vulnerability Assessment of Reinforced Concrete Buildings Using Hierarchical Fuzzy Rule Base Modeling

Tesfamariam

Saatçioğlu

2010

Earthquake Spectra

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A reliable building vulnerability assessment is required for developing a risk-based assessment and retrofit prioritization. Tesfamariam and Saatcioglu (2008) proposed a simple building vulnerability module where the building performance modifiers are in congruence with FEMA 154. This paper is an extension of the building vulnerability assessment that include detailed performance modifier in congruence with FEMA 310 that is represented in a heuristic based hierarchical structure. Some of the input parameters are obtained through a walk down survey and are subject to vagueness uncertainty that is modelled through fuzzy set theory. A knowledge base fuzzy rule base modeling is developed and illustrated for reinforced concrete buildings damaged in the 1 May 2003 Bingöl, Turkey earthquake.

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Seismic response of irregular multi-storey buildings with flexible inelastic diaphragms

Cited by 11 publications

References 1 publication

Analysis of a Large Database of Concrete Core Tests with Emphasis on Within-Structure Variability

Analysis of a Large Database of Concrete Core Tests with Emphasis on Within-Structure Variability

Evaluation of the infill influence on the elastic period of existing RC frames

Seismic Vulnerability Assessment of Reinforced Concrete Buildings Using Hierarchical Fuzzy Rule Base Modeling

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