A review of research on seismic behaviour of irregular building structures since 2002

Stefano, Mario De; Pintucchi, Barbara

doi:10.1007/s10518-007-9052-3

Cited by 201 publications

(95 citation statements)

References 44 publications

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“…Basu and Jain (2004) presented the definition of center of rigidity for rigid floor diaphragm buildings has been extended to unsymmetrical buildings with flexible floors. Stefano et al (2007) presents an overview of the progress in research regarding seismic response of plan and vertically irregular building structures. Dai Junw et al (2009) shown some analytical results from 3D temporal characteristics of the responses of an RC frame building subjected to both a large aftershock and the main shock of Wenchuan M s =8.0 earthquake.…”

Section: Torsionmentioning

confidence: 99%

Seismic Behavior and Retrofit of Infilled Frames

Tabeshpour¹,

Azad²

2012

Earthquake-Resistant Structures - Design, Assessment and Rehabilitation

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Section: Torsionmentioning

confidence: 99%

Seismic Behavior and Retrofit of Infilled Frames

Tabeshpour¹,

Azad²

2012

Earthquake-Resistant Structures - Design, Assessment and Rehabilitation

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“…It can be observed that Model-3 is susceptible to largest lateral displacements due to seismic forces. The reason behind this is that the discontinuous portion of the frame carries largest mass among Model [1][2][3]. On the contrary, this mass discontinuity decreases the total stiffness of the certain story level.…”

Section: Analysis and Resultsmentioning

confidence: 99%

“…Stefano & Pintucchi [2] presented a review of the research on the seismic behavior of both plan and vertically irregular building structures. Tremblay and Poncet [3] examined the influence of mass irregularity for several eight-story structures with different mass discontinuity patterns.…”

Section: Introductionmentioning

confidence: 99%

Effect of position of irregularity in concrete frame on response to seismic forces

et al. 2017

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This paper deals with the irregular profile of concrete frame building along vertical direction comprising of mass discontinuity and overhanging mass. The underlying fact of the paper is the effect of seismic force in concrete frames with different types of irregularities including mass discontinuity and overhanging mass. For each successive model, the position of overhanging mass and mass discontinuity is kept variable to make the study effective. This study delineates the vulnerable effect of mass discontinuity and overhanging mass in concrete frame buildings. To attain the nonlinear property of each element of frame, pushover analysis method along with the equivalent static force method has been adopted for the present study. UBC97 code has been used here for linear static analysis while the parameters for nonlinear static analysis are arrogated from FEMA356 and ATC40. Investigations on different frames exhibit that the location of mass discontinuity and overhanging mass can be a key matter to avoid risks due to earthquake. While considering the design of such frames which have irregularities, designer must think about the position of irregularity. Basically, vulnerability increases in case of mass discontinuity if the irregularity is in lower stories. Moreover, vulnerability increases in case of overhanging masses if the irregularity is in higher stories.

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“…Some research is still under development in this field (for state-of-the-art reports, refer to Anagnostopoulos et al 2013 and to previous reviews by Rutenberg 1992Rutenberg , 2002Rutenberg and De Stefano 1997;De Stefano and Pintucchi 2008), even if the assumptions made for formulating such models involve many simplifications.…”

Section: Brief Review Of the Assessment Methods Of Induced Torsional mentioning

confidence: 99%

“…In the former case, methods considering uni-directional eccentricity, strength and ground motion were developed, subsequently improved considering these parameters in both principal directions. Concerning the multistorey models, some simplified shear-type models have been developed as well as detailed plastic hinge type models (see reviews by Rutenberg 1992Rutenberg , 2002Rutenberg and De Stefano 1997;De Stefano and Pintucchi 2008;Anagnostopoulos et al 2013).…”

Section: Brief Review Of the Assessment Methods Of Induced Torsional mentioning

confidence: 99%

Pushover Analysis for Plan Irregular Building Structures

Stefano

Mariani

2014

Perspectives on European Earthquake Engineering and Seismology

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Nonlinear static procedures (NSPs), also known as "pushover methods", represent the most used tool in the professional practice for assessment of seismic performance of building structures. Most of the methods subscribed by major seismic codes for seismic analysis of new or existing buildings have been originally defined for simple regular structures.Nevertheless, perfect regularity is an idealization that very rarely occurs and, in principle, the concept of irregularity itself is a fuzzy one. Most codes attempt to give a definition to the concept of "regularity", considering issues related to the distribution of mass, stiffness and strength in the building, both in plan and in elevation. Real buildings rarely comply with these regularity requirements, resulting in a barely reliable application of the basic NSPs. Code specifications concerning irregular structures are in need of improvement and they do not provide for clear and specific guidelines for the seismic analysis of such structures. Therefore the problem of the seismic evaluation of irregular structures is still an open one and basic issues need to be further explored.The present paper aims at providing a wide outlook on the problem of the seismic assessment of plan irregular building structures. Firstly, a brief review of the elastic and inelastic methods for the assessment of the torsional effects induced by in-plan irregularity is presented, mainly aimed at the definition of the variables governing the problem. Then, the basic features of the most important NSPs are discussed, followed by the description of the recent improvements developed for irregular structures. Since there is not yet a fully satisfactory solution, pros and cons of the various approaches are outlined, highlighting the most promising methods and the issues that are yet to be investigated. Finally, recommendations for code improvement are suggested.

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A review of research on seismic behaviour of irregular building structures since 2002

Cited by 201 publications

References 44 publications

Seismic Behavior and Retrofit of Infilled Frames

Seismic Behavior and Retrofit of Infilled Frames

Effect of position of irregularity in concrete frame on response to seismic forces

Pushover Analysis for Plan Irregular Building Structures

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