Improvement of Eurocode 8 Seismic Design Envelope for Bending Moments in RC Walls of High-rise Buildings

Pejović, Jelena; Stepinac, Mislav; Serdar, Nina; Jevrić, Marija

doi:10.1080/13632469.2020.1846004

Cited by 6 publications

(4 citation statements)

References 13 publications

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“…All EN1998-1 provisions related to the design and detailing of ductile walls have been complied. More on linear seismic design of buildings is given in (Pejovic et al 2019(Pejovic et al , 2020.…”

Section: Fig2 Base Plan Of the Buildingsmentioning

confidence: 99%

Probabilistic Seismic Loss Assessment of RC High-Rise Buildings in Southern Euro-Mediterranean Zone

Pejović

Serdar

2021

Preprint

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In this paper probabilistic seismic loss assessment of RC high rise-buildings for seismic excitation typical for Southern Euro-Mediterranean zone is presented. The loss assessment methodology developed in paper is based on a comprehensive simulation approach which takes into account ground motion (GM) uncertainty, the random effects in seismic demand as well as in predicting the damage states (DSs). The methodology is implemented on three RC high-rise buildings of 20-story, 30-story and 40-story with core wall structural system designed according to Eurocode 8. The loss functions described by a cumulative lognormal probability distribution are obtained for two intensity level for a large set of simulations (non-linear time-history analyses) based on 60 GM records with wide range of magnitudes, distance to source and different site soil conditions. The losses expressed in percent of building replacement cost for RC high-rise buildings are obtained. In the estimation of losses, both structural (S) and non-structural (NS) damage for four DSs are considered. The effect of different GM characteristics (magnitude, distance to source and site soil condition) on the obtained losses are investigated. It is checked if the estimated performance of the RC high-rise buildings fulfill limit state requirements according to Eurocode 8.

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Section: Fig2 Base Plan Of the Buildingsmentioning

confidence: 99%

Probabilistic Seismic Loss Assessment of RC High-Rise Buildings in Southern Euro-Mediterranean Zone

Pejović

Serdar

2021

Preprint

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“…The same principle of bracing can be used for tube in tube structural systems [21]. In recent years, the research conducted is mostly based on parametric analysis of different structural systems [22][23][24][25]. In [22] a parametric analysis is conducted where the main parameter being varied are the layout dimensions of the building.…”

Section: Shear Lag Effect In Tube Structural Systemsmentioning

confidence: 99%

Parametric Analysis of the Shear Lag Effect in Tube Structural Systems of Tall Buildings

Hafner¹,

Vlašić²,

Kišiček³

et al. 2020

Applied Sciences

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Horizontal loads such as earthquake and wind are considered dominant loads for the design of tall buildings. One of the most efficient structural systems in this regard is the tube structural system. Even though such systems have a high resistance when it comes to horizontal loads, the shear lag effect that is characterized by an incomplete and uneven activation of vertical elements may cause a series of problems such as the deformation of internal panels and secondary structural elements, which cumulatively grow with the height of the building. In this paper, the shear lag effect in a typical tube structure will be observed and analyzed on a series of different numerical models. A parametric analysis will be conducted with a great number of variations in the structural elements and building layout, for the purpose of giving recommendations for an optimal design of a tube structural system.

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“…Joint panel stirrups contribute to the confining pressure and shear strength required to prevent early brittle collapses; the movement between the columns and beams can be transmitted correctly with enough transverse reinforcement [5]. However, structural elements constructed against gravity loads or in line with seismic standards in the Mediterranean region usually lack transverse reinforcements in the junction [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

et al. 2022

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Using a significant number of transverse hoops in the joint’s core is one recognized way for achieving the requirements of strength, stiffness, and ductility under dynamic loading in a column joint. The shear capacity of a joint is influenced by the concrete’s compressive strength, the anchoring of longitudinal beam reinforcement, the number of stirrups in the joint, and the junction’s aspect ratio. Seismic motion on the beam may produce shear capacity and bond breaking in the joint, causing the joint to fracture. Furthermore, due to inadequate joint design and details, the entire structure is jeopardized. In this study, the specimens were divided into two groups for corner and interior beam–column joints based on the joint reinforcement detailing. The controlled specimen has joint detailing as per IS 456:2000, and the strengthened specimen has additional diagonal cross bars (modified reinforcement technique) at the joints detailed as per IS 456:200. The displacement time history curve, load-displacement response curves, load-displacement hysteretic curve, and load cycle vs. shear stress were used to compare the results of the controlled and strengthened specimens. The findings show that adding diagonal cross bars (modified reinforcing techniques) to beam–column joints exposed to cyclic loads enhances their performance. The inclusion of a diagonal cross bar increased the stiffness of the joint by giving an additional mechanism for shear transfer and ductility, as well as greater strength with minimum cracks.

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Improvement of Eurocode 8 Seismic Design Envelope for Bending Moments in RC Walls of High-rise Buildings

Cited by 6 publications

References 13 publications

Probabilistic Seismic Loss Assessment of RC High-Rise Buildings in Southern Euro-Mediterranean Zone

Probabilistic Seismic Loss Assessment of RC High-Rise Buildings in Southern Euro-Mediterranean Zone

Parametric Analysis of the Shear Lag Effect in Tube Structural Systems of Tall Buildings

Behavior of RC Beam–Column Joints Strengthened with Modified Reinforcement Techniques

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