Joints and wood shear walls modelling II: Experimental tests and FE models under seismic loading

2015 ◽  
Vol 101 ◽  
pp. 743-749 ◽  
Author(s):  
C. Boudaud ◽  
J. Humbert ◽  
J. Baroth ◽  
S. Hameury ◽  
L. Daudeville
Keyword(s):  
Shear Walls ◽  
Seismic Loading ◽  
Experimental Tests

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.

A Probabilistic Approach for the Assessment of LOC Events in Steel Storage Tanks Under Seismic Loading

2018 ◽  
Author(s):  
Fabrizio Paolacci ◽  
Daniele Corritore ◽  
Antonio C. Caputo ◽  
Oreste S. Bursi ◽  
Bledar Kalemi
Keyword(s):  
Numerical Models ◽  
Simple Procedure ◽  
Probabilistic Approach ◽  
Seismic Loading ◽  
Experimental Tests ◽  
Seismic Intensity ◽  
Storage Tanks ◽  
Industrial Plants ◽  
Damage States ◽  
Relationship Of

The damage states in a storage tank subjected to seismic loading can induce loss of containment (LOC) with possible consequences (fire, explosion, etc..) both for the surrounding units and people. This aspect is particularly crucial for the Quantitative Risk Analysis (QRA) of industrial plants subjected to earthquakes. Classical QRA methodologies are based on standard LOC conditions whose frequency of occurrence is mainly related to technological accident rather than natural events and are thus useless. Therefore, it is evident the necessity of establishing new procedures for the evaluation of the frequencies of occurrence of LOC events in storage tanks when subjected to an earthquake. Consequently, in this work a simple procedure founded on a probabilistic linear regression-based model is proposed, which uses simplified numerical models typically adopted for the seismic response of above ground storage tanks. Based on a set of predetermined LOC events (e.g. damage in the pipes, damage in the nozzles, etc..), whose probabilistic relationship with the local response (stress level, etc..) derives from experimental tests, the probabilistic relationship of selected response parameters with the seismic intensity measure (IM) is established. As result, for each LOC event, the cloud analysis method is used to derive the related fragility curve.

scholarly journals Blast resistance of steel plate shear walls designed for seismic loading

2020 ◽  
Vol 814 ◽  
pp. 012041
Author(s):  
Prashant Sunagar ◽  
Aravind Bhashyam ◽  
Manish S Dharek ◽  
K S Sreekeshava ◽  
R S Ramegowda ◽  
...  
Keyword(s):  
Steel Plate ◽  
Blast Resistance ◽  
Shear Walls ◽  
Seismic Loading ◽  
Steel Plate Shear Walls

Development of a New Nonbuckling Segmented Brace

2015 ◽  
Vol 15 (08) ◽  
pp. 1540012 ◽  
Author(s):  
H. Hao
Keyword(s):  
Compressive Force ◽  
Seismic Loading ◽  
Experimental Tests ◽  
Frame Structure ◽  
Structural Deformation ◽  
Frame Structures ◽  
Seismic Responses ◽  
Loading Effects ◽  
Cyclic Loading Tests ◽  
Steel Frame Structure

This paper introduces a new design of segmented nonbuckling brace member for use in frame structures to resist earthquake loading. The proposed segmented brace member consists of one or more segments connected by either tension-only or compressive force controlled joints. Because it cannot resist or can only resist a limited amount of compressive force, it is effective only under tension, but buckling would not be a failure mechanism of the brace. Its capability of mitigating seismic responses remains effective throughout the entire ground excitation duration. The other advantages of this new design include light weight, easy installation, easy replacement, controlled damage locations, and minimum or no residual structural deformation. The disadvantage is that full energy dissipations can be achieved only when it is in tension. Therefore they will be effective in a frame structure only when cross bracings are used. This paper presents experimental tests and numerical simulation results to examine the effectiveness of this innovative brace member in mitigating seismic responses of frame structures. Laboratory cyclic loading tests on a single brace member and on steel frames without bracing or with cross bracing by conventional brace or segmented brace are carried out. The testing results are analyzed and compared. The effectiveness of segmented brace members in mitigation of seismic loading effects on frame structures is demonstrated. Nonlinear response analyses are then carried out to investigate the performance of this new segmented brace applied to a steel frame structure subjected to ground motions of different amplitudes. The results demonstrate that this new design is effective in mitigating seismic loading effect throughout the entire ground motion duration.

scholarly journals Developing a Library of Shear Walls Database and the Neural Network Based Predictive Meta-Model

2019 ◽  
Vol 9 (12) ◽  
pp. 2562 ◽  
Author(s):  
Mohammad Javad Moradi ◽  
Mohammad Amin Hariri-Ardebili
Keyword(s):  
Neural Network ◽  
Numerical Models ◽  
Shear Walls ◽  
Experimental Tests ◽  
Experimental Models ◽  
Test Procedures ◽  
Meta Model ◽  
The Neural Network ◽  
The Right ◽  
Comprehensive Study

There is a large amount of useful information from past experimental tests, which are usually ignored in test-setup for the new ones. Variation of assumptions, materials, test procedures, and test objectives make it difficult to choose the right model for validation of the numerical models. Results from different experiments are sometimes in conflict with each other, or have minimum correlation. Furthermore, not all these information are easily accessible for researchers and engineers. Therefore, this paper presents the results of a comprehensive study on different experimental models for steel plate and reinforced concrete shear walls. A unique library of up to 13 parameters (mechanical properties and geometric characteristics) affecting the strength, stiffness and drift ratio of the shear walls are gathered including their sensitivity analysis. Next, a predictive meta-model is developed based on artificial neural network. It is capable of forecasting the responses for any desired shear wall with good accuracy. The proposed network can be used to as an alternative to the nonlinear numerical simulations or expensive experimental test.

CLT Shear Walls Anchored with Shear-Tension Angle Brackets: Experimental Tests and Finite-Element Modeling

2021 ◽  
Vol 147 (7) ◽  
Author(s):  
Giuseppe D’Arenzo ◽  
Daniele Casagrande ◽  
Andrea Polastri ◽  
Marinella Fossetti ◽  
Massimo Fragiacomo ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Shear Walls ◽  
Experimental Tests ◽  
Element Modeling

Seismic performance of shear wall buildings with gravity-induced lateral demands

2014 ◽  
Vol 41 (4) ◽  
pp. 323-332 ◽  
Author(s):  
Michael R. Dupuis ◽  
Tyler D.D. Best ◽  
Kenneth J. Elwood ◽  
Donald L. Anderson
Keyword(s):  
Shear Walls ◽  
Seismic Loading ◽  
Shear Wall ◽  
Building Codes ◽  
Inelastic Displacement ◽  
Architectural Features ◽  
Seismic Force ◽  
Design Characteristics ◽  
New Buildings ◽  
Gravity System

Architectural features and other irregularities in the gravity system which apply gravity-induced lateral demands to the seismic force resisting system are being incorporated in new buildings. These gravity-induced demands have raised concerns due to the perceived potential for a ratcheting effect to occur during seismic loading. This paper summarizes the results of a study to identify if there are behavioral trends not recognized within the scope of current building codes. To this end, a nonlinear, parametric study was conducted in OpenSees to investigate the inelastic response of concrete shear wall buildings with a range of design characteristics, including gravity-induced lateral demands. The results demonstrated that a seismic ratcheting effect can develop and amplify inelastic displacement demands. The effect is significantly more prevalent in coupled shear walls compared with cantilevered shear walls. An irregularity class to address buildings with gravity-induced lateral demands on the seismic force resisting system is proposed for the 2015 National Building Code of Canada.

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