scholarly journals Seismic analysis of buildings on different types of soil with and without shear wall: A review

2019 ◽  
Author(s):  
Runbahadur Singh ◽  
Oshin Victor ◽  
Shilpa Indra Jain
Keyword(s):  
Seismic Analysis ◽  
Shear Wall ◽  
Different Types

Measured natural periods of concrete shear wall buildings: insights for the design of Canadian buildings

2012 ◽  
Vol 39 (8) ◽  
pp. 867-877 ◽  
Author(s):  
Damien Gilles ◽  
Ghyslaine McClure
Keyword(s):  
Seismic Analysis ◽  
Dynamic Properties ◽  
Response Spectrum ◽  
Shear Wall ◽  
Mode Shapes ◽  
Design Stage ◽  
Base Shear ◽  
Period Equation ◽  
Input Load ◽  
Structural Engineers

Structural engineers routinely use rational dynamic analysis methods for the seismic analysis of buildings. In linear analysis based on modal superposition or response spectrum approaches, the overall response of a structure (for instance, base shear or inter-storey drift) is obtained by combining the responses in several vibration modes. These modal responses depend on the input load, but also on the dynamic characteristics of the building, such as its natural periods, mode shapes, and damping. At the design stage, engineers can only predict the natural periods using eigenvalue analysis of structural models or empirical equations provided in building codes. However, once a building is constructed, it is possible to measure more precisely its dynamic properties using a variety of in situ dynamic tests. In this paper, we use ambient motions recorded in 27 reinforced concrete shear wall (RCSW) buildings in Montréal to examine how various empirical models to predict the natural periods of RCSW buildings compare to the periods measured in actual buildings under ambient loading conditions. We show that a model in which the fundamental period of RCSW buildings varies linearly with building height would be a significant improvement over the period equation proposed in the 2010 National Building Code of Canada. Models to predict the natural periods of the first two torsion modes and second sway modes are also presented, along with their uncertainty.

scholarly journals Non-Linear Seismic Analysis of Steel Plate Shear Wall Subjected to Blast Loading

2020 ◽  
Vol 955 ◽  
pp. 012025
Author(s):  
Prashant Sunagar ◽  
Manish S Dharek ◽  
K Nruthya ◽  
K S Sreekeshava ◽  
B Nagashree ◽  
...  
Keyword(s):  
Steel Plate ◽  
Seismic Analysis ◽  
Blast Loading ◽  
Shear Wall ◽  
Steel Plate Shear Wall ◽  
Non Linear

Effects of Seismic Incident Directionality on Ground Motion Characteristics and Responses of a Single-Mass Bi-Degree-of-Freedom System

2021 ◽  
pp. 2150119
Author(s):  
Jun Gong ◽  
Xudong Zhi ◽  
Feng Fan ◽  
Shizhao Shen ◽  
Da Qaio ◽  
...  
Keyword(s):  
Ground Motion ◽  
Large Scale ◽  
Seismic Analysis ◽  
Ground Motions ◽  
Propagation Distance ◽  
Degree Of Freedom ◽  
Different Types ◽  
Single Mass ◽  
Motion Characteristics ◽  
The Impact

To investigate the variability of ground motion characteristics (GMC) with the angle of seismic incidence (ASI) and the impact of seismic incident directionality on structural responses, first, a large-scale database of recorded ground motions was used to analyze the causes of GMC variability due to the seismic incident directionality effect (SIDE). Then a single-mass bi-degree-of-freedom system (SM-BDOF-S) with different types of symmetrical sections was selected to explore the influence mechanism of SIDE on the seismic responses. The results illustrated that the GMC has substantial variability with the ASI, which is independent of the earthquake source, propagation distance, and site condition, and exhibits complex random characteristics. Additionally, a classification method for ground motions is proposed based on this GMC variability to establish a criterion for selecting ground motions in seismic analysis considering the SIDE. Moreover, for an SM-BDOF-S, the response spectral plane is proposed to explain the transition behavior of spectral responses that are very similar among different stiffness ratios, but divergent for different types of ground motions. The influence of SIDE on structures is determined by their stiffness and stiffness ratio in the [Formula: see text]- and [Formula: see text]-directions, as well as the type of ground motion.

The Quasi-Frame-Shear-Wall Method for Reinforcement of Concrete-Masonry Mixed Structures

2011 ◽  
Vol 368-373 ◽  
pp. 2060-2064
Author(s):  
Ji Tong Jiang ◽  
Wei Liu ◽  
Hong Qiu Guo ◽  
Song Yang ◽  
De Run Du
Keyword(s):  
Seismic Analysis ◽  
Shear Wall ◽  
Wall Structure ◽  
Original Structure ◽  
Transmission Route ◽  
Force Transmission ◽  
Mixed Structure ◽  
Concrete Masonry ◽  
Reinforcement Measures ◽  
Wall Method

Based on seismic analysis of concrete-masonry mixed structure, a new strengthening method will be introduced. In order to find the effective and reasonable reinforcement measures to adjust to the characteristics of the mixed structure, the method of equivalent stiffness should apply to the structure, it can change the original unreasonable force transmission route, and then transform and reinforce the original structure into a quasi-frame-shear wall structure whose force transmission route is similar to frame-shear wall structure. This could be a reference to similar projects.

Retrofit of Artificially Perforated Shear Wall in Existing Dominant Wall Structure

2007 ◽  
Vol 348-349 ◽  
pp. 917-920
Author(s):  
Chang Sik Choi ◽  
Yun Cheul Choi ◽  
Hyun Ki Choi ◽  
M.S. Lee
Keyword(s):  
Carbon Fiber ◽  
Axial Stress ◽  
Shear Wall ◽  
Seismic Retrofit ◽  
Lateral Loading ◽  
The Other ◽  
Steel Plates ◽  
Wall Structure ◽  
Test Results ◽  
Different Types

A series of three shear wall specimens were tested under constant axial stress and reversed cyclical lateral loading in order to evaluate the seismic retrofit that had been proposed for the shear wall with the opening induced by remodeling. One of these specimens was tested in the as-built condition and the other two were retrofitted prior to testing. The retrofit involved the use of carbon fiber sheets and steel plates (a thickness of 3mm) over the entire face of the wall. The test results showed that the failed specimens had shear fractures and that two different types of retrofitting strategies had different effects on the strengths of each specimen.

Seismic Damage Characteristics of RC Shear Wall with Diagonal Profile Steel Braces by Experiment

2007 ◽  
Vol 340-341 ◽  
pp. 1115-1120
Author(s):  
Shi Yun Xiao ◽  
Hong Nan Li ◽  
Yan Gang Zhao ◽  
Jing Wei Zhang
Keyword(s):  
Mechanical Model ◽  
Shear Walls ◽  
Shear Wall ◽  
Seismic Damage ◽  
Cyclic Loads ◽  
Load Carrying Capacity ◽  
Load Carrying ◽  
Different Types ◽  
Rc Shear Wall ◽  
Theoretical Results

This paper focuses on an experimental investigation and theoretical analysis of different types of RC shear wall with the profile steel braces in two side columns and diagonal profile steel braces of walls subjected to applied repeated cyclic loads. Fifteen RC shear walls with different shear span ratio are tested and their aseismic charactertics are studied. The effect of profile steel bracings on failure property, bearing capacity, ductility and hysteretical characteristic of shear wall is investigated based on experimental results. It is shown that adding the profile steel braces on the boundary column and inner of walls can obviously enhance the ultimate strength of specimens and improve their aseismic characteristics. Finally, the mechanical model of the shear wall is presented and the formulae for calculating the load-carrying capacity are developed. Numerical analyses indicate that the theoretical results agree well with those from experiments.

Sign in / Sign up

Export Citation Format

Share Document