Study on Moment-Curvature Hysteresis Relationship of Reinforced Concrete Shear Walls

In order to study and improve moment-curvature hysteresis model of reinforced concrete shear walls, experiment of reinforced concrete shear walls was conducted. Based on experiment of reinforced concrete shear walls, moment-curvature relationship is deduced and moment-curvature hysteresis curves are obtained. The existing moment-curvature hysteresis models of reinforced concrete walls are discussed and improved, and the calculated moment-curvature hysteresis curves with the modified model fit well with experimental results.

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Study on Shear-Shear Deformation Hysteresis Relationship of Reinforced Concrete Shear Walls

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.638-640.260 ◽

2014 ◽

Vol 638-640 ◽

pp. 260-264 ◽

Cited By ~ 1

Author(s):

Guang Qiang Zhou ◽

Qing Yang Liu ◽

Xin Zhang

Keyword(s):

Reinforced Concrete ◽

Shear Deformation ◽

Shear Walls ◽

Model Fit ◽

Concrete Walls ◽

Modified Model ◽

Hysteresis Curves ◽

Reinforced Concrete Walls ◽

Relationship Of ◽

Deformation Hysteresis

In order to study and improve shear-shear deformation hysteresis model of reinforced concrete shear walls, experiment of reinforced concrete shear walls was conducted. Based on experimental data, shear-shear deformation relationship is deduced and shear-shear deformation hysteresis curves are obtained. The existing shear-shear deformation hysteresis models of reinforced concrete walls are discussed and improved, and the calculated shear-shear deformation hysteresis curves with the modified model fit well with experimental results.

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Evaluation of Reinforced Concrete Members Damaged by Earthquakes

Earthquake Spectra ◽

10.1193/1.1585893 ◽

1996 ◽

Vol 12 (3) ◽

pp. 457-478 ◽

Cited By ~ 1

Author(s):

Robert D. Hanson

Keyword(s):

Reinforced Concrete ◽

Experimental Results ◽

Structural System ◽

Concrete Walls ◽

Lateral Capacity ◽

Concrete Members ◽

Reinforced Concrete Walls ◽

Crack Repair ◽

Seismic Repair ◽

Repair Techniques

A number of building authorities have included or are proposing to include loss in lateral capacity of the structural system caused by earthquake damage as a basis for requiring specific degrees of seismic repair and upgrades of the damaged members or of the entire structural system. Attempts have been made to apply this criteria through the size of cracks in reinforced concrete walls. This paper reviews experimental results which demonstrate that size of wall crack is not directly related to a reduction in wall capacity. The effectiveness of various wall crack repair techniques on restoring wall characteristics is discussed.

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Seismic performance of squat thin reinforced concrete walls for low-rise constructions

Earthquake Spectra ◽

10.1177/8755293020906841 ◽

2020 ◽

Vol 36 (3) ◽

pp. 1074-1095 ◽

Cited By ~ 2

Author(s):

Matías A Hube ◽

Hernán Santa María ◽

Orlando Arroyo ◽

Alvaro Vargas ◽

Javier Almeida ◽

...

Keyword(s):

Reinforced Concrete ◽

Seismic Performance ◽

Latin American ◽

Seismic Behavior ◽

Nonlinear Models ◽

Single Layer ◽

Experimental Results ◽

Concrete Walls ◽

Reinforced Concrete Walls ◽

Web Reinforcement

Thin reinforced concrete (RC) walls with single layer reinforcement have been used for houses and buildings in several Latin American countries. Although some design codes include recommendations for squat thin walls in low-rise constructions, its seismic performance has not been validated adequately in past earthquakes. This article presents the results of an experimental campaign of nine full-scale specimens conducted to characterize the influence of the steel type, the reinforcement ratio, and the wall thickness on the seismic behavior of squat thin RC walls with single layer reinforcement. Both welded wire and deformed bars were used as web reinforcement. Experimental results are used to develop nonlinear models to assess the seismic behavior of a prototype two-story house with welded wire reinforcement and deformed bars by means of incremental dynamic analyses. The experimental results show that the type of steel has the largest influence on wall seismic performance. The numerical results suggest that RC walls with single layer reinforcement are suitable for housing applications up to two stories in high seismicity regions, particularly walls detailed with deformed bars.

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A note on the earthquake performance of reinforced concrete shear walls

Bulletin of the New Zealand Society for Earthquake Engineering ◽

10.5459/bnzsee.2.2.193-198 ◽

1969 ◽

Vol 2 (2) ◽

pp. 193-198

Author(s):

Karl V. Steinbrugge ◽

Henry J. Degenkolb

Keyword(s):

Reinforced Concrete ◽

Shear Walls ◽

The United States ◽

Concrete Walls ◽

Reinforced Concrete Walls ◽

Structural Panel ◽

Earthquake Performance ◽

Seismic Loadings ◽

Strength And Stiffness ◽

Seismic Forces

A great many one and two story buildings as well as many buildings as tall as 10 stories or higher have cast in situ reinforced concrete walls designed to act as shear walls for resisting seismic forces. Allowable design stresses in reinforced concrete shear walls have been increased in recent years in many building codes, although in one major code they have been drastically reduced. Concurrently, modern architectural trends have often resulted in the reduction of certain reserve strength features neglected in seismic design such as "non-structural" panel walls of brick or of reinforced concrete since these elements are often replaced by glass or by insulated metal panels. This, in effect, results in greater applied seismic forces on the shear walls. The frequent elimination of deep spandrel beams in favor of thin slabs which may meet glass or metal walls also tends to increase stresses in the shear walls since the strength and stiffness of the spandrels were often neglected when interior shear walls existed. In summary, it has been the experience in the United States and in many other countries in the world that the effective factor of safety in reinforced concrete shear walled structures has often been substantially reduced for seismic loadings. In many cases, inadequate methods of analysis have neglected critical stresses at boundaries and openings.

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