Seismic response of reinforced concrete walls with lap

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Seismic response of reinforced concrete walls with lap ...

Nov 21, 2016  10%  Recent lap-splice failures in reinforced concrete walls in the field (Song et al. 2012) and the scarcity of experimental data revealed the need for this investigation. The objective of this investigation was to produce data to help understand the response of walls with lap splices to lateral loads.

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Seismic Response of Reinforced Concrete Walls with Lap ...

Seismic Response of Reinforced Concrete Walls with Lap Splices Six large-scale reinforced concrete structural walls were subjected to increasing displacement reversals up to failure. The effects of the presence of lap splices, splice length (60 bar diameters and 40 bar diameters), and boundary-element confinement were studied.

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Seismic response of reinforced concrete walls with lap ...

Request PDF Seismic response of reinforced concrete walls with lap splices Six large-scale reinforced concrete structural walls were subjected to increasing displacement reversals up to failure.

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Investigator: Santiago Pujol Students: Enrique Villalobos ...

The presence of lap splices reduced the drift capacity by 16% to 40%. Confining reinforcement caused an increase of the drift capacity ranging from 20% to 67%. Concrete-surface unit tensile strains increments of 100% were observed at the base of the walls with lap splices. In regions of nearly constant moment

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Seismic Response of Reinforced Concrete Walls NIST

Aug 20, 2018  Reinforced Concrete Wall Models for Seismic Response This task will connect and overlap with the three constituent communities involved in the nonlinear seismic analysis of reinforced concrete walls: the design community, commercial software vendors, and academic researchers.

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Effects of longitudinal reinforcement discontinuities on ...

Sep 23, 2020  10%  Lap splices and bar cutoffs introduce reinforcement discontinuities in reinforced concrete structures. A two-step approach was used to investigate the effect of longitudinal reinforcement discontinuities on the seismic performance of reinforced concrete structural walls. In the first step, six cyclic tests on small-scale reinforced concrete structural walls were conducted to study

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Cyclic response of reinforced concrete walls with ...

keywords = "Anchorage, Cyclic loads, Lap splice, Mechanical coupler, Plastic hinges, Reinforced concrete, Seismic design, Shear walls", author = "Sriram Aaleti and Brueggen, {Beth L.} and Benton Johnson and French, {Catherine E.} and Sri Sritharan",

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Seismic response of reinforced concrete wall buildings ...

May 01, 2021  Maffei J, Bonelli P, Kelly D, Lehman DE, Lowes LN, Moehle J, et al. Recommendations for seismic design of reinforced concrete wall buildings based on studies of the 2010, Maule, Chile Earthquake. NIST GCR 14-917-25.

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Seismic Response of Reinforced Concrete Bridge Pier Walls ...

Jun 29, 2000  Pier wall cases that need retrofit were identified based on the expected seismic response. A practical approach to relate the confinement reinforcement in the plastic hinge zones of bridge pier walls to the displacement ductility capacity was developed based on the results of the parametric study.

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Seismic Response of Reinforced Concrete Frame-Shear Wall ...

Oct 31, 2020  In ductility-based seismic design, the coupling beam is the main energy dissipator in reinforced concrete (RC) frame-shear wall. Before the wall limbs are damaged, the coupling beam yields and consumes most of the energy.

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Seismic Design of Cast-in-Place Concrete Special ...

Seismic Design of Cast-in-Place Concrete Special Structural Walls and Coupling Beams: A Guide for Practicing Engineers The basic structural elements of an earthquake-resistant building are diaphragms, vertical framing elements, and the foundation. In reinforced concrete buildings, the vertical elements are usually either moment-resisting frames or

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Cyclic response of reinforced concrete walls with ...

keywords = "Anchorage, Cyclic loads, Lap splice, Mechanical coupler, Plastic hinges, Reinforced concrete, Seismic design, Shear walls", author = "Sriram Aaleti and Brueggen, {Beth L.} and Benton Johnson and French, {Catherine E.} and Sri Sritharan",

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Experiments on seismic retrofit and repair of reinforced ...

Reinforced concrete walls are commonly selected as the lateral resisting systems in seismic design of buildings. The design procedure requires reliable/robust models to predict the wall response.

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EXPERIMENTS ON SEISMIC RETROFIT AND REPAIR OF

The walls were designed and detailed to simulate non-ductile reinforced concrete construction of the 1960’s, having lap splices of the longitudinal reinforcement in the potential plastic hinge region, and having inadequate confinement of the boundary regions.

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PB93214518 REPORT NO. 2.4 (b) -1 ...

out-of-plane seismic response of reinforced masonry walls. The work is Task 2.4(b) of the U.S. part of the U.S.-Japan Coordinated Program for Masonry Building Research. The analytical model is contained in a stand-alone computer program, WALLY, which can be used for the analysis of the out-of-plane seismic response of masonry walls of arbitrary

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Special Collection on Recent Advances in Reinforced ...

Sep 09, 2018  This special collection of 10 papers highlights recent advances in seismic design of reinforced concrete walls. Some of the studies originated as a result of the observed damage to structural walls in the Chile and Christchurch earthquakes. ... the study examines how accurately the strength and deformation capacity of walls with lap splices can ...

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Seismic Retrofit and Strengthening of Deficient Reinforced ...

deficient reinforced concrete shear wall structures is presented. In the proposed analytical model, bond stress-slip models are used to model the bond behaviour between concrete and steel in reinforced concrete structural elements. The proposed models are correlated with experimental beam and shear wall test data obtained from the literature.

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Reinforced Concrete Failure Mechanisms

• Seismic reinforcement details have changed dramatically over the past few decades; older concrete hydraulic structures may be more vulnerable to seismic events • Use w/ caution modern codes when computing capacity of older reinforced concrete structures • Typical event tree presented for reinforced concrete buttresses and piers

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Seismic Response of Fiber-Reinforced Concrete Coupled Walls

May 01, 2016  Title: Seismic Response of Fiber-Reinforced Concrete Coupled Walls Author(s): Rémy D. Lequesne, Gustavo J. Parra-Montesinos, and James K. Wight Publication: Structural Journal Volume: 113 Issue: 3 Appears on pages(s): 435-445 Keywords: confinement; coupled wall; coupling beam; earthquake; fibers; reinforced concrete (RC); shear Date: 5/1/2016 Abstract: The behavior of

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Tests on Thin Reinforced Concrete Walls Subjected to In ...

Dec 08, 2019  The present data paper describes an experimental campaign on five thin T-shaped reinforced concrete walls (DOI: 10.6084/m9.figshare.3490754.v2), which includes: details on the test units, materials, test setup, loading protocol, instrumentation, main features of each unit's response, organization of the provided test data, and examples of derived data.

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Sustainability Free Full-Text Seismic and Energy ...

This work proposes an innovative integrated retrofitting system aiming to improve both the seismic and energy performance of existing reinforced concrete and masonry buildings. The system is based on engineered insulating concrete form panels, installed on the outside of existing buildings as a shell exoskeleton. A key major advantage of the proposed system is that it addresses the ...

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Seismic Response of Reinforced Concrete Walls NIST

Aug 20, 2018  Recent Results: None - this is a new project. Standards and Codes: Improved Reinforced Concrete Wall Models for Seismic Response The results of the task will be formulated to provide guidance in building code provisions on acceptable methods of analysis of reinforced concrete walls, for inclusion in future versions of ASCE 41[1], ASCE 7[2] and ACI 318

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Seismic Response of Reinforced Concrete Bridge Pier Walls ...

Jun 29, 2000  Pier wall cases that need retrofit were identified based on the expected seismic response. A practical approach to relate the confinement reinforcement in the plastic hinge zones of bridge pier walls to the displacement ductility capacity was developed based on the results of the parametric study.

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Seismic Response of Fiber-Reinforced Concrete Coupled

hardening, high-performance fiber-reinforced concrete (HPFRC) in coupling beams and walls was evaluated as a means to reduce diagonal and confinement reinforcement. The Specimen CW-1 walls were constructed with reinforced concrete (RC) designed to satisfy ACI Building Code (ACI 318-08) seismic provisions. The walls in Specimen CW-2 were ...

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MacSphere: Seismic Rehabilitation of RC Structural Walls

Research on rehabilitation of reinforced concrete (RC) structural walls with both deficient shear reinforcement and lap splice detailing is still needed.

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EXPERIMENTS ON SEISMIC RETROFIT AND REPAIR OF

The walls were designed and detailed to simulate non-ductile reinforced concrete construction of the 1960’s, having lap splices of the longitudinal reinforcement in the potential plastic hinge region, and having inadequate confinement of the boundary regions.

Get Price

Model development and seismic performance evaluation of ...

Aug 16, 2021  Reinforced concrete columns in these buildings feature shortcomings (e.g., shorter lap splices, splices located in the plastic hinge zone, and minimal confinement) which increase their seismic ...

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Special Collection on Recent Advances in Reinforced ...

Sep 09, 2018  This special collection of 10 papers highlights recent advances in seismic design of reinforced concrete walls. Some of the studies originated as a result of the observed damage to structural walls in the Chile and Christchurch earthquakes. ... the study examines how accurately the strength and deformation capacity of walls with lap splices can ...

Get Price

SEISMIC EVALUATION A ND RETROFIT OF REINFORCED

on thin walls containing lap splices at their bases are summarized, emphasizing the poor seismic performance of this type of construction. The effects of wall thickness and reinforcement detailing of deficient reinforced concrete walls are also presented. The improved performance of deficient shear walls

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Reinforced Concrete Failure Mechanisms

• Seismic reinforcement details have changed dramatically over the past few decades; older concrete hydraulic structures may be more vulnerable to seismic events • Use w/ caution modern codes when computing capacity of older reinforced concrete structures • Typical event tree presented for reinforced concrete buttresses and piers

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Simulation of Nonlinear Seismic Response of Reinforced ...

squat walls. Keywords: Shear walls, reinforced concrete, macro-models, nonlinear response, shear modeling 1. INTRODUCTION The use of reinforced concrete shear-wall buildings is quite common in earthquake-prone regions since their seismic behavior has been demonstrated to be adequate during past severe earthquakes,

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Seismic Retrofit and Strengthening of Deficient Reinforced ...

deficient reinforced concrete shear wall structures is presented. In the proposed analytical model, bond stress-slip models are used to model the bond behaviour between concrete and steel in reinforced concrete structural elements. The proposed models are correlated with experimental beam and shear wall test data obtained from the literature.

Get Price

Seismic Response and CFRP Retrofit of Poorly Detailed ...

Jun 03, 2012  The reversed cyclic loading behavior of full-scale shear wall specimens was investigated before and after retrofit. The wall specimens were designed and detailed to simulate nonductile reinforced concrete construction of the 1960s, having lap splices of the longitudinal reinforcement in the potential plastic hinge region, and having inadequate confinement of the boundary regions.

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Evaluation of seismic performance of as‐built and ...

Jun 16, 2021  Abstract Several studies have looked at the development of hinge models to simulate the hysteretic response of flexure- and shear-critical reinforced concrete ... Evaluation of seismic performance of as-built and retrofitted reinforced concrete frame structures with LAP splice deficiencies. Eyitayo A. Opabola, Corresponding Author.

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Seismic Resistance of Reinforced Concrete Frame Structures ...

4. Retrofit oflightly reinforced concrete frames, flat plates and unreinforced masonry. 5. Enhancement of the IDARC (inelastic damage analysis of reinforced concrete) computer program. 6. Research infilled frames, including the development of an experimental program, devel­ opment of analytical models and response simulation. 7.

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