An Evaluation of Overstrength Factor of Seismic Designed Low Rise RC Buildings

Zahid, Mohd Zulham Affandi Mohd; Dwiputra, Robert; Shahrin, Fatehah

doi:10.1016/j.proeng.2013.02.008

Cited by 11 publications

(5 citation statements)

References 3 publications

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“…Ductility also depends on the overstrength ratio (αu/α1), which is defined as the ratio between the ultimate strength of a structure and its first yielding strength. The importance of overstrength has been proven by experimental and numerical research on the performance of buildings during severe earthquakes (Zahid et al 2013). The EC8-1 states that the overstrength ratio of existing buildings must be verified.…”

Section: Nomenclaturementioning

confidence: 99%

“…Considering different element configurations to represent typical RC buildings is the common approach followed in these studies. Also, in (Zahid et al 2013), the authors obtained both the behaviour and overstrength factors for regular and irregular buildings designated according to different European codes. However, they did not vary the geometry nor the reinforcement ratio of the elements.…”

Section: State Of the Artmentioning

confidence: 99%

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Influence of the constructive features of RC existing buildings in their ductility and seismic performance

Requena-Garcia-Cruz

Morales‐Esteban

Neyra

et al. 2020

Bull Earthquake Eng

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Section: Nomenclaturementioning

confidence: 99%

Section: State Of the Artmentioning

confidence: 99%

Influence of the constructive features of RC existing buildings in their ductility and seismic performance

Requena-Garcia-Cruz

Morales‐Esteban

Neyra

et al. 2020

Bull Earthquake Eng

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show abstract

“…It has distinct signatures in both its velocity and displacement forms, (Figure 1), which is unobservable in the far-field motion. Numerous sources already discussed the major impact of near-field ground motion with pulse (or fling-step) on the multi-story RC frames (e.g., Rashidi et al, 2019;Zahid, Majid, and Faisal, 2017;Champion and Liel, 2012;Majid et al, 2010). However, these studies do not particularly explain the effect of the displacement fling-step pulse on the concrete frames.…”

Section: Introductionmentioning

confidence: 99%

Near-Collapse Probability of RC Frames in Indonesia Under Repeated Earthquakes Containing Fling-Step Effect

Faisal¹,

Anshari²,

Nazri³

et al. 2023

IJTech

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The velocity pulse and displacement fling-step pulse signatures may be present in a nearfield earthquake ground motion record. It is generally known that near-field ground motion with pulse effects accelerated the building drift. The damage of building can also occur as a result of two or three earthquakes within the building's lifespan. The repeated earthquakes could cause minor to severe damage to the building, including structural collapse. This includes earthquakes with flingstep pulse, which impact is underexamined in the existing studies. Therefore, the objective of this study is to assess the impact of repeated earthquakes with displacement of the fling-step pulse on the near-collapse probability of 5-, 10-, 15 and 20-story concrete frames. Based on the response modification factor R = 8, 5, and 3, the frames are classified as special, intermediate, and ordinary, respectively. The result shows that the near-collapse probability of repeated earthquakes is more likely to occur on the concrete frames which reaches intensity measure of 27.0% than the effect of single earthquakes.

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“…Previous literature (Zahid et al 2013;Ergun et al 2015;Allahvirdizadeh et al 2017;Bojorquez et al 2017;Mosleh et al 2017;Loulelis 2017) have employed deterministic approaches for the performance evaluation of buildings subjected to seismic excitations. But a probabilistic approach for the better estimate of the performance is always profound because the deterministic approach does not take account of the uncertainties associated with earthquake load and structural capacity.…”

Section: Introductionmentioning

confidence: 99%

Implications of Importance Factor on Seismic Design from 2000 SAC-FEMA Perspective

Dhir

Zade

Basu³

et al. 2020

ASCE-ASME J. Risk Uncertainty Eng. Syst., Part A: Civ. Eng.

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The seismic design of buildings uses global ductility factor and occupancy importance factor (IF) as two major fixed parameters in defining the safety of the structure. The study of performance variation of the structure with global ductility factor is available but, there is hardly any study that provides information regarding the increase in the level of safety achieved by increasing the IF values. Being a building categorical dependent parameter, IF is used by the international seismic design codes for increasing the design loads of the structure. The change in the level of safety achieved through the variation in the value of the IFs for reinforced concrete (RC) framed buildings will perhaps be an important useful representation of the stakeholders for the approximate damage cost estimation. This article performs the structural safety assessment against seismic load using a standard structural reliability method with second-order hazard approximation to evaluate the effect of the IF on the level of safety and the cost associated with the building. Results show that, an overall reduction of 50-60% in the 3 damage index of the selected buildings can be achieved by increasing the IF from a value of 1.0 to 2.0 with a consequent increase in the cost of the building.

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An Evaluation of Overstrength Factor of Seismic Designed Low Rise RC Buildings

Cited by 11 publications

References 3 publications

Influence of the constructive features of RC existing buildings in their ductility and seismic performance

Influence of the constructive features of RC existing buildings in their ductility and seismic performance

Near-Collapse Probability of RC Frames in Indonesia Under Repeated Earthquakes Containing Fling-Step Effect

Implications of Importance Factor on Seismic Design from 2000 SAC-FEMA Perspective

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