Bolted Moment Connections with End-Plates in Structural Steel Frames

2010 ◽  
Author(s):  
I. Khan-Kernahan ◽  
A.K. Sharma
Keyword(s):  
Structural Steel ◽  
Steel Frames ◽  
Moment Connections

Use of Structural Steel Frames for Structural Restoration of URM Historical Buildings in Seismic Areas

2017 ◽  
Vol 11 (04) ◽  
pp. 1750012
Author(s):  
Vail Karakale
Keyword(s):  
Structural Steel ◽  
Seismic Performance ◽  
Steel Frames ◽  
Masonry Building ◽  
Lateral Stiffness ◽  
Historic Buildings ◽  
Structural System ◽  
Historical Buildings ◽  
Structural Restoration ◽  
Historical Masonry

Historic buildings and monuments are an important part of our cultural heritage that must be protected and their sustainability ensured, especially when earthquakes occur. In this paper, a technique that uses structural steel frames is proposed as one way of strengthening unreinforced masonry (URM) in historical buildings. The idea underpinning this technique is to reduce the earthquake displacement demand on non-ductile URM walls by attaching steel frames to the building floors from inside. These frames run parallel to the structural system of the building and are fixed at their base to the existing foundation of the building. Furthermore, they are constructed rapidly, do not occupy architectural space, save the building’s historic fabric, and can be easily replaced after an earthquake if some minor damage ensues. The proposed technique was applied to a five-story historical masonry building in Istanbul. The results of seismic performance analysis indicate that even though the building has plan irregularities, the proposed steel frames are able to effectively enhance the building’s seismic performance by reducing inter-story drifts and increasing lateral stiffness and strength.

Investigating the environmental impact of reinforced-concrete and structural-steel frames on sustainability criteria in green buildings

2021 ◽  
pp. 103184
Author(s):  
Nima Ranjbar ◽  
Amirhossein Balali ◽  
Alireza Valipour ◽  
Akilu Yunusa-Kaltungo ◽  
Rodger Edwards ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Environmental Impact ◽  
Structural Steel ◽  
Steel Frames ◽  
Green Buildings ◽  
Sustainability Criteria

Analysis of Flexibly Connected Steel Frames

1975 ◽  
Vol 2 (3) ◽  
pp. 280-291 ◽  
Author(s):  
M. John Frye ◽  
Glenn A. Morris
Keyword(s):  
Structural Analysis ◽  
Structural Steel ◽  
Stiffness Matrix ◽  
Steel Frames ◽  
Analysis Procedure ◽  
Steel Framing ◽  
Internal Forces ◽  
The Moment ◽  
Pinned Connections ◽  
Fixed End

A procedure is presented for analyzing steel frames with any combination of pinned connections, fixed connections, connections with any specified flexibility characteristics, or any of seven commonly used connection types. A method is outlined for expressing, in a nondimensional form, the moment–rotation characteristics for all connections of a given type. The dimensionless relationships are listed for the commonly used structural steel framing connection types. The incorporation of connection deformations into a linear structural analysis, by modifying the stiffness matrix and fixed-end-force vectors for each member, is demonstrated.An iterative nonlinear analysis procedure is described in which repeated modifications are made to assumed flexibility characteristics for all connections in a structure. When a suitable set of connection flexibility characteristics has been arrived at, a single analysis is performed to determine the correct structural deflections and internal forces.

Multi-layer welding robots for structural steel frames

1988 ◽  
Vol 2 (10) ◽  
pp. 917-921
Author(s):  
O Sato ◽  
S Shimizu ◽  
S Nakayama ◽  
S Furuya ◽  
S Fujiwara
Keyword(s):  
Structural Steel ◽  
Steel Frames
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