|Table of Contents|

Local Stability of I-section Steel-concrete Continuous Composite Beam Web(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2009年04期
Page:
35-39
Research Field:
Publishing date:
2009-12-20

Info

Title:
Local Stability of I-section Steel-concrete Continuous Composite Beam Web
Author(s):
JIANG Li-zhong;  LIU Hai-feng;  LI Xing
School of Civil Engineering and Architecture, Central South University, Changsha 410075, Hunan, China
Keywords:
I-section steel-concrete continuous composite beam;  web;  bearing capacity;  instability model;  local stability
PACS:
TU398
DOI:
-
Abstract:
The mechanical behaviors of continuous composite beam web in negative moment area under the load of complicated stress were studied, and the calculation model of local stability under the load of complicated stress was proposed, meanwhile, the corresponding calculation formulas of limited buckling stress were built. Based on the stability characteristics of composite beam web, according to the relevant equations under the action of eccentric compression and shear, the elastic buckling factors of I-section composite beam web under the complicated stress state were calculated. Furthermore, using potential energy principle, the limited stresses of continuous composite beam web in negative moment area were analyzed, and the limiting height to thickness ratio was also determined for webs without stiffing ribs in the elastic stage. The calculated results show that the method has broad applicability, and in most cases, the restrictions of height to thickness ratio can be relaxed, and it can provide reference for the reasonable optimization design of I-section composite beams web in negative moment area.

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Last Update: 2009-12-20