Ring-Shaped Lateral Bracing System for Steel Structures

2019 ◽  
Vol 20 (2) ◽  
pp. 493-503 ◽  
Author(s):  
Abbas Shamivand ◽  
Jalal Akbari
Keyword(s):  
Steel Structures ◽  
Lateral Bracing ◽  
Bracing System

scholarly journals Seismic Performance of Bracing, Diagrid and Outrigger System

2020 ◽  
Vol 9 (7) ◽  
pp. 32-36
Keyword(s):  
Seismic Performance ◽  
Tall Buildings ◽  
Lateral Load ◽  
Lateral Loads ◽  
Steel Buildings ◽  
Efficient System ◽  
Effective System ◽  
Tension And Compression ◽  
Lateral Bracing ◽  
Bracing System

In this paper bracing, diagrid and outrigger system have been analyzed for comparing the seismic performance of multistorey buildings. Bracing system is a very efficient system which can be used as a lateral load resisting system in concrete and steel buildings, in this system lateral loads are transferred through lateral bracing by undergoing in tension and compression .diagrid is another effective and efficient system that can be used as lateral load resisting system in steel and concrete tall buildings, in this system lateral loads are transferred by inclined members of the building. Another very effective system which commonly used for resisting lateral loads in concrete and steel high rise building is outrigger system, in this system lateral loads will be resisted by outrigger belt truss and core shear wall. Location and number of outrigger and type of bracing is very important which needs to be optimized in this system. In this paper comparison of bracing, diagrid and outrigger system have been studied on a 24 storey by using a standard package of ETABS 2017.

scholarly journals SEISMIC BEHAVIOR OF STEEL MONORAIL BRIDGES UNDER TRAIN LOAD DURING STRONG EARTHQUAKES

2013 ◽  
Vol 07 (02) ◽  
pp. 1350006 ◽  
Author(s):  
C. W. KIM ◽  
M. KAWATANI ◽  
T. KANBARA ◽  
N. NISHIMURA
Keyword(s):  
Seismic Behavior ◽  
Analytical Study ◽  
Seismic Energy ◽  
Dynamic Responses ◽  
Additional Mass ◽  
Plastic Deformations ◽  
Strong Earthquakes ◽  
Lateral Bracing ◽  
Bracing System ◽  
Conventional Type

This paper investigated dynamic responses of steel monorail bridges incorporating train-bridge interaction under strong earthquakes. Two types of steel monorail bridges were considered in the study: a conventional type with steel track-girder; an advanced type with composite track-girder and simplified lateral bracing system. During strong earthquakes, monorail train was assumed standing on the track-girder of monorail bridges. Observations through the analytical study showed that considering the monorail train as additional mass rather than a dynamic system in numerical modeling overestimated effect of the train load on seismic performance of monorail bridges. Earlier plastic deformations at the end bracing of the girder system absorbed seismic energy and reduced the stress at the pier base.

scholarly journals Effect of the Bracing System on the Probability of Collapse of Steel Structures under Maximum Credible Earthquake

2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Alireza Kianmehr
Keyword(s):  
Residential Buildings ◽  
Hazard Analysis ◽  
Fragility Curves ◽  
Steel Structures ◽  
Structural Members ◽  
Braced Frame ◽  
Ductile Behavior ◽  
Bracing System ◽  
Eccentric Bracing ◽  
Different Characteristics

Simple bracing frames can be divided into two types in terms of concentric or eccentric. Concentric bracing frames are frames that intersect with other structural members at one point in the structure along the bracing members. Otherwise, the braced frame will be eccentric. It is said empirically that due to this type of shaping, eccentric bracing frames exhibit more ductile behavior and concentric bracing frames exhibit more stiff behavior. This behavioral difference caused this study to be numerically computing for five frames, including unique concentric and eccentric bracing frames of 5 and 10 stories and an ordinary 5-story concentric bracing frame. Their tensions and drift ratios should be acceptable for the use of residential buildings. Using the primary two steps of the new PEER probabilistic framework, namely, probabilistic seismic hazard analysis and structural analysis, which leads to the drawing of fragility curves, the probability of collapse is obtained to compare the safety capability of these frames according to their different characteristics against earthquakes. The results show that increasing the ductility or increasing the number of floors or the height of these systems can reduce collapse. Also, according to the results of the probability of collapse obtained in frames with 5-story concentric bracing frames, it can be said that some of the current regulations, which work based on previous approaches of analysis, can lead to unsafe structures with a high probability of collapse.

scholarly journals Effect of Standard No. 2800 Rules for Moment Resisting Frames on the Elastic and Inelastic Behavior of Dual Steel Systems

2017 ◽  
Vol 7 (6) ◽  
pp. 2139-2146 ◽  
Author(s):  
H. Veladi ◽  
H. Najafi
Keyword(s):  
Steel Structures ◽  
Lateral Load ◽  
Nonlinear Static Analysis ◽  
Inelastic Behavior ◽  
Braced Frame ◽  
Moment Resisting Frames ◽  
Seismic Design Code ◽  
Moment Resisting ◽  
Bracing System ◽  
Steel Braced Frame

According to most valid Design Codes including the Iranian Seismic Design Code (Standard No. 2800), moment resisting frames in dual systems must have the ability of resisting the 25% of the total lateral load of the dual system independently. This study is conducted to investigate the implementation of this rule for dual steel structures with two types of steel braced frame. Also, its effect on the strength of the structure and the distribution of lateral load between the frames and the bracing system is evaluated. In order to investigate the effect of that rule, structural models with 5, 10 and 15 floors are modeled. Nonlinear static analysis is employed and results are discussed. Following the Standard No. 2008 seems to increase the structure’s lateral resistance and decrease the number of elements entered into the inelastic behavior stage. In general, the structure has a more desirable inelastic behavior.

scholarly journals Seismic performance investigation of new lateral bracing system called “OGrid-H”

2019 ◽  
Vol 1 (4) ◽  
Author(s):  
Maryam Boostani ◽  
Omid Rezaifar ◽  
Majid Gholhaki
Keyword(s):  
Seismic Performance ◽  
Lateral Bracing ◽  
Bracing System

On the characteristics and seismic study of Hat Knee Bracing system, in steel structures

2012 ◽  
Vol 13 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Issa JafarRamaji ◽  
Massood Mofid
Keyword(s):  
Steel Structures ◽  
Bracing System

Design for lateral stability of slender timber beams considering slip in the lateral bracing system

Structures ◽  
2018 ◽  
Vol 16 ◽  
pp. 157-163
Author(s):  
Anders Klasson ◽  
Roberto Crocetti ◽  
Ivar Björnsson ◽  
Eva Frühwald Hansson
Keyword(s):  
Lateral Stability ◽  
Lateral Bracing ◽  
Bracing System ◽  
Timber Beams

Redistribution of internal forces in the lateral bracing system / Schnittgrößenumlagerungen bei der Gebäudeaussteifung

Mauerwerk ◽  
2015 ◽  
Vol 19 (6) ◽  
pp. 441-452
Author(s):  
Kenan Michel ◽  
Wolfram Jäger ◽  
Frank Steinigen
Keyword(s):  
Internal Forces ◽  
Lateral Bracing ◽  
Bracing System
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