LIMIT STATES DESIGN OF CRANE RUNWAY GIRDERS
Current time: 04-11-2021, 02:12 AM
Users browsing this thread: 1 Guest(s)
Author: poolmand
Last Post: poolmand
Replies 0
Views 247

LIMIT STATES DESIGN OF CRANE RUNWAY GIRDERS
#1
LIMIT STATES DESIGN OF CRANE RUNWAY GIRDERS

Author(s)/Editor(s): N S TRAHAIR | Size: 503 KB | Format: PDF | Quality: Original preprint | Year: Jan 2021 | pages: 17 
 Publisher: School of Civil Engineering, The University of Sydney


[Image: 49405622570523094630.png]


[Image: info.png]

RESEARCH REPORT R967
Steel crane runway girders are subjected to torsion by their eccentric loads. The twist rotation of the principal axes caused by torsion induces additional bending moments, and reduces the resistance to lateral buckling. There is little guidance on how to design for torsion, and design procedures are often intuitive, with varying degrees of rationality and precision.
This paper seeks to establish a logical procedure for designing crane runway girders which is based on an extension of the limit states methods of designing for biaxial bending. An additional term for the ratio of the design torque to the section torsion resistance is included in the interaction equations. Proposals are made for determining this section resistance. Research has shown that this addition can allow for the reduction in the lateral buckling resistance caused by the twist rotations. A linear elastic analysis of the twist rotations is used to determine the moment increases caused by torsion.
An example of the proposed method is developed and illustrated by a design example. The small twist rotations are not enough to have a major effect on the bending moments. The additional torsion term is also small, and the design capacity is primarily governed by the resistance to lateral buckling.

[Image: download.png]
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************



[Image: password.png]
***************************************
Content of this section is hidden, You must be registered and activate your account to see this content. See this link to read how you can remove this limitation:

http://forum.civilea.com/thread-27464.html
***************************************




This post has been made by CivilEA Post-Generator V2.3.1
[-] The following 13 users say Thank You to poolmand for this post:
  • babakfeyzi, PinkPant, cace-01, jcbv, oanm2000, kowheng, subin91, zrilek, malc, Dell_Brett, tomtumx, bluefish80, Wijono
Reply


Possibly Related Threads…
Thread Author Replies Views Last Post
Crane Runway Girders 2nd Edition poolmand 0 252 04-05-2021, 10:21 AM
Last Post: poolmand
Plate Girders Design mowafi3m 0 1,490 04-10-2016, 08:34 PM
Last Post: mowafi3m
Direct Methods for Limit States in Structures and Materials cace-01 2 2,536 05-23-2014, 08:26 PM
Last Post: cace-01
Limit States of Materials and Structures: Direct Methods ir_71 1 2,279 03-20-2014, 12:01 PM
Last Post: andersen3



Users browsing this thread: 1 Guest(s)