Estimating displacement demand in reinforced concrete frames using some failure criteria

Monavari, Benyamin; Massumi, Ali

doi:10.1186/2008-6695-4-4

Cited by 15 publications

(9 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this conclusion is misleading. Horizontal movement and rotation of the foundation may amplify the lateral deformations and inter-storey drifts of the superstructure (Guin and Banerjee 1998;Tabatabaiefar 2012;Tabatabaiefar & Clifton 2016;Far 2019a), which are the most commonly used damage parameters in performance-based design (Monavari and Massumi 2012;Mohammadi et al 2015;Samimifar et al 2019). As a result, considering SSI can alter the performance level of buildings and is notably crucial for high-rise and slender buildings (Kramer 1996;Fatahi et al 2011;Tabatabaiefar et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Xiao-feng

Far

2021

Bull Earthquake Eng

View full text Add to dashboard Cite

It is conventional to assume that the role of the soil-structure interaction (SSI) is beneficial to the buildings under seismic loading. However, lessons learned from recent earthquakes revealed that this assumption could be misleading, and SSI may have different effects on the seismic response of different structural systems. In this study, an enhanced soil-structure numerical model is developed and verified using ABAQUS software to assess the impact of SSI on high-rise frame-core tube structures. The seismic responses of 20, 30, and 40-storey buildings constructed on soil class Ee (according to Australian Standards) under four earthquake acceleration records have been studied. The results in terms of maximum lateral deflections, foundation rocking, inter-storey drifts and storey shear forces for the rigid base and flexible base frame-core tube structures have been discussed and compared.Generally, SSI has a remarkable impact on the seismic behaviour of high-rise frame-core tube structures since it can increase the lateral deflections and inter-storey drifts and decrease storey shear forces of structures. However, It is worth noting that the seismic responses of soil-structure systems under near and far field earthquakes are considerably different.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Xiao-feng

Far

2021

Bull Earthquake Eng

View full text Add to dashboard Cite

show abstract

“…-structural instability due to formation of a column hinging mechanism (Figure 7) [27], -an upper limit of the inter-storey drift, equal to 2% of the storey height. This limit is also specified by Balendra [28], and closed to those adopted by seismic design codes Eurocode 8 [24], which vary between 2 and 3%.…”

Section: Failure Criteriamentioning

confidence: 99%

Study on the Influence of Stiffness of Beam–Column Connections on the Seismic Behavior of Composite Moment Resisting Frames

Khemis

Titoum

Mazoz

et al. 2021

Architecture, Civil Engineering, Environment

View full text Add to dashboard Cite

In the design of steel or composite structures, the connections are usually considered infinitely rigid or perfectly pinned. However, the real behavior of these connections is semi-rigid. Consequently, this semi-rigidity can influence the overall behavior of the composite structures, especially the moment-resisting frames. Seismically, the most critical parameter that characterizes the frames behavior is the response factor R. In this context, the research work consists of studying the semi-rigidity effect of the connections on the behavior of the composite frames by evaluating the response modification factor R by using the Pushover method. To accomplish this task, three types of portal frames of 3, 4 and 5 storeys were analyzed for different degrees of connection (beam-column). An easy and practical solution has been proposed to determine the approximate value of the coefficient behavior R for the composite frames with semi-rigid connections.

show abstract

“…In this study, the application of a constant vertical load and inverted monotonous lateral triangular loading until failure are used for non-linear static analysis. This distribution is chosen based on several authors (Mwafy and Elnashai, 2001;Monavari and Massumi, 2012;Louzai and Abed, 2015), this triangular distribution pattern offers a better estimation and prediction of the structures response. Recently, the advantage of this loading type has been demonstrated by study (Mwafy and Elnashai, 2001), after having made a comparison between three types of loadings on pushover analysis (triangular, uniform and multimodal) with a non-linear dynamic analysis under accelerogram.…”

Section: Non-linear Analysis Of the Modelsmentioning

confidence: 99%

“…Applied Technology Council, 1996;EC90. (Eurocode), 2002;Chopra and Goel, 2002;Kadid and Boumrkik, 2008;Monavari and Massumi, 2012;Dinar et al, 2014;Louzai and Abed, 2015;AitL'Hadj et al, 2017).…”

Section: Non-linear Analysis Of the Modelsmentioning

confidence: 99%

Plastic hinges mechano-reliability analysis in the beams of RC frames structures

Bouzid

Hamizi

Hannachi

et al. 2020

WJE

View full text Add to dashboard Cite

Purpose The purpose of this study is to establish a relationship between causes and effects, the respect of materials characteristics values [concrete compressive strength (fc) and steel yield stress (fy)] and the norms of the construction dispositions value (covers). This study is motivated by the post-seismic damages related to the plastification of the reinforced concrete (RC)/beams sections, named plastic hinges. The results are given by fragility curves representing the failure probability (Pf) of the plastic hinges versus covers value. Design/methodology/approach A mechanical-reliability coupling methodology is proposed and performed on three frames (three, six and nine storey). For each frame, seven covers the value of reinforcement steel bars has been taken into account in the beams. After definition of the limit state function G(x), a process of idea to twin-track; deterministic and probabilistic, is considered. Thus, numerical simulations are carried out under ETABS© software, to extract a soliciting moments Ms(x). Then, ultimate moments Mu(x), the result of reliability approach are calculated using Monte Carlo Simulations. In this step, two random variables; concrete compressive strength in 28 days of age (fc) and steel yield stress (fy), have been studied. Findings In the mechanical study, the results show that, the first plastic hinge appears at the beams for all frames. In the reliability study, the (fy) variation shows that all plastic hinges are in failure domain, nevertheless, the (fc) variation leads to have all sections in the safety domain, except A7 and B7 models. The failure probability (Pf) calculation according to (fc) and (fy) shows that an absolute error of 0.5 cm in the steel bars covers can switch the frame from the safety domain to the failure domain. Originality/value The plastic hinges reliability of the RC/ frame structures is independent on the high of the structure. The (fc) random variable according to the used distribution law does not affect the reliability (safety or failure). However, the impact of the steel yield stress variation (fy) is not negligible. The errors in covers affect considerably the strength of the elements.

show abstract

Estimating displacement demand in reinforced concrete frames using some failure criteria

Cited by 15 publications

References 5 publications

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Effects of dynamic soil-structure interaction on seismic behaviour of high-rise buildings

Study on the Influence of Stiffness of Beam–Column Connections on the Seismic Behavior of Composite Moment Resisting Frames

Plastic hinges mechano-reliability analysis in the beams of RC frames structures

Contact Info

Product

Resources

About