Response Modification Factors for RC Case-Study Buildings with Structural Walls

2009 ◽  
Vol 25 (4) ◽  
pp. 803-819 ◽  
Author(s):  
Taewan Kim ◽  
Douglas A. Foutch ◽  
James Wilcoski ◽  
James M. LaFave
Keyword(s):  
Shear Wall ◽  
Load Resistance ◽  
Evaluation Framework ◽  
Rational Approach ◽  
Structural Walls ◽  
Steel Moment Frame ◽  
Response Modification Factor ◽  
Confidence Levels ◽  
Performance Based Evaluation ◽  
Rc Shear Wall

A rational approach for determining the response modification factor, [Formula: see text], has been applied to reinforced concrete (RC) shear wall buildings designed under current codes and standards of practice. The approach is founded upon the performance-based evaluation framework from the SAC project; however, new values for various parameters were derived specifically for RC shear wall buildings because the SAC parameters were for steel moment frame buildings. Typical RC shear wall buildings were designed consisting of solid, flexure-dominated structural walls for lateral load resistance and a flat plate floor system for gravity loads. The performance of each building was then evaluated by calculating the confidence level of achieving the design objective. The buildings designed per the current [Formula: see text]-value of 6 demonstrated good performances, meaning that the confidence levels of avoiding collapse were greater than the target value of 90%. The confidence levels for shear wall buildings with greater [Formula: see text]-values were also determined, suggesting that further study could provide the basis for justifying an [Formula: see text]-value of 7 for the special RC shear wall structural system.

scholarly journals Seismic Performance of Existing RC Structural Walls Retrofitted in Flexure by Wall End Plate

2021 ◽  
Vol 13 (2) ◽  
pp. 509
Author(s):  
Su-Yong Kim ◽  
Uijin Cho ◽  
Joo-Hong Chung ◽  
Baek-Il Bae ◽  
Chang-Sik Choi
Keyword(s):  
Shear Wall ◽  
Steel Plates ◽  
Wall Structure ◽  
Lateral Loads ◽  
Apartment House ◽  
Structural Walls ◽  
Flexural Performance ◽  
Rc Structural Walls ◽  
Rc Shear Wall ◽  
Real Scale

A study was conducted for the flexural retrofit of an old apartment house composed of a reinforced concrete (RC) shear wall structure. For the shear wall, a vertical retrofit was performed to both ends of the wall targeting the slender wall to improve the flexural performance. The retrofit materials were steel plate, epoxy, and non-shrink grout, and they were connected to the existing shear wall using post-installed chemical anchors. The concrete at the wall ends was broken and retrofitted as much as necessary to maintain the shear wall’s length. The points to be noted are the fracture of the welded part of the flexural retrofit and the chemical anchor’s pulling. After the real scale specimen was fabricated by simulating the existing shear wall, the retrofit effect was experimentally verified by breaking the wall ends, retrofitting the ends, and applying repeated cyclic lateral loads. A total of three specimens were fabricated and retrofitted using steel plates and steel tubes. Since this experiment evaluated the flexural performance, the experiment was performed with a cantilever setting. The flexural retrofit effect using steel was analyzed through the load–displacement relationship, stiffness degradation, and energy dissipation, and through this, the bond of the retrofit and the behavior of the wall were verified.

Finite Element Simulation of RC Shear Wall Components

2012 ◽  
Vol 170-173 ◽  
pp. 3594-3597
Author(s):  
Hai Tao Wan ◽  
Peng Li
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Shear Wall ◽  
Lateral Force ◽  
Skeleton Curve ◽  
Structure Damage ◽  
Wall Structures ◽  
Element Simulation ◽  
Rc Shear Wall ◽  
Wall Components

Reinforced concrete (RC) shear wall component is a very important lateral force-resisting member which is widely used in China. Its seismic behavior has a great impact on the seismic performance of the overall structure. Damage of some RC shear wall structures under the earthquake is caused by the damage of shear wall components, So shear wall components are an essential seismic members. However, the test datum are not enough to study the performance of RC shear wall components, Therefore, Finite element simulation of RC shear wall components is performed by software ABAQUS in the paper. Through comparing with the finite element simulation and the test of load - displacement skeleton curve, failure mode and steel bar strain, the result shows that the finite element simulation can more accurately simulate the situation of the test, verifying the finite element simulation is the most important research tool besides test.

scholarly journals Analisis Pengaruh Lokasi Dinding Geser Terhadap Pergeseran Lateral Bangunan Bertingkat Beton Bertulang 5 Lantai

2021 ◽  
Vol 4 (1) ◽  
pp. 16
Author(s):  
Leonardus Setia Budi Wibowo ◽  
Dermawan Zebua
Keyword(s):  
Lateral Displacement ◽  
Shear Walls ◽  
Seismic Loading ◽  
Shear Wall ◽  
Structural System ◽  
Earthquake Force ◽  
Earthquake Resistant ◽  
Story Drift ◽  
Frame System ◽  
Rc Shear Wall

Indonesia is one of the countries in the earthquake region. Therefore, it is necessary to build earthquake-resistant buildings to reduce the risk of material and life losses. Reinforced Concrete (RC) shear walls is one of effective structure element to resist earthquake forces. Applying RC shear wall can effectively reduce the displacement and story-drift of the structure. This research aims to study the effect of shear wall location in symmetric medium-rise building due to seismic loading. The symmetric medium rise-building is analyzed for earthquake force by considering two types of structural system. i.e. Frame system and Dual system. First model is open frame structural system and other three models are dual type structural system. The frame with shear walls at core and centrally placed at exterior frames showed significant reduction more than 80% lateral displacement at the top of structure.

Experimental validation of RC shear wall structures with hybrid coupling beams

2018 ◽  
Vol 111 ◽  
pp. 14-30 ◽  
Author(s):  
Tao Wang ◽  
Qingxue Shang ◽  
Xiaoting Wang ◽  
Jichao Li ◽  
Zi’ang Kong
Keyword(s):  
Experimental Validation ◽  
Shear Wall ◽  
Coupling Beams ◽  
Hybrid Coupling ◽  
Wall Structures ◽  
Rc Shear Wall

scholarly journals Fragility Functions for RC Shear Wall Buildings in Australia

2019 ◽  
Vol 35 (1) ◽  
pp. 333-360 ◽  
Author(s):  
Ryan Hoult ◽  
Helen Goldsworthy ◽  
Elisa Lumantarna
Keyword(s):  
Reinforced Concrete ◽  
Site Response ◽  
Shear Wall ◽  
Fragility Functions ◽  
Building Stock ◽  
Seismic Region ◽  
High Rise ◽  
Capacity Spectrum ◽  
Damage Data ◽  
Rc Shear Wall

This research investigates the development of analytical fragility functions for reinforced concrete shear wall buildings in Australia. A building stock for the city of Melbourne is used in conducting an assessment of these types of structures. The assessment uses the best information available for selecting the building parameters applicable to the low-to-moderate seismic region, site soil class, expected earthquake ground motions, and site response. The capacity spectrum method is used to derive vulnerability functions for low-, mid-, and high-rise reinforced concrete shear wall buildings. Although there is a paucity of earthquake damage data available in Australia, some comparisons are made using the results from the fragility functions derived here to the damage data from the Newcastle earthquake in 1989.

Seismic Design and Construction Practices for RC Structural Wall Buildings

2012 ◽  
Vol 28 (1_suppl1) ◽  
pp. 245-256 ◽  
Author(s):  
Leonardo M. Massone ◽  
Patricio Bonelli ◽  
René Lagos ◽  
Carl Lüders ◽  
Jack Moehle ◽  
...  
Keyword(s):  
Linear Models ◽  
Principal Direction ◽  
Response Spectrum ◽  
Three Dimensional ◽  
Load Resistance ◽  
Floor Plan ◽  
Structural Walls ◽  
Cross Sectional ◽  
Structural Wall ◽  
Wall Area

Reinforced concrete buildings utilizing structural walls for lateral load resistance are the predominant form of construction in Chile for buildings over four stories. Typical buildings include a large number of walls, with ratios of wall cross-sectional area to floor plan area of roughly 3% in each principal direction. Based on the good performance of RC buildings in the March 1985 earthquake, requirements for closely spaced transverse reinforcement at wall boundaries were excluded when Chile adopted a new concrete code in 1996 based on ACI 318-95. In recent years, use of three-dimensional linear models along with modal response spectrum analysis has become common. Since 1985, nearly 10,000 new buildings have been permitted. Although the newer buildings have similar wall area to floor plan areas as older buildings, newer walls are thinner and buildings are taller, leading to significantly higher wall axial load ratios.

Sign in / Sign up

Export Citation Format

Share Document