|Table of Contents|

Effect analysis of steel-concrete composite beam caused by sudden change of temperature(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2013年01期
Page:
20-26
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Effect analysis of steel-concrete composite beam caused by sudden change of temperature
Author(s):
ZHOU Yong-chao1;  HU Sheng-neng2;  SONG Lei3;  LI Zi-qing1
1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. School of Civil Engineering and Communications, North China University of Water Resources and Electric Power, Zhengzhou 450011, Henan, China; 3. Xi'an Municipal Engineering Design and Research Institute Co., Ltd., Xi'an 710068, Shaanxi, China
Keywords:
bridge engineering;  steel-concrete composite beam;  elastic theory;  temperature gradient;  sudden change of temperature;  interfacial force;  relative slide deformation
PACS:
U448.34
DOI:
-
Abstract:
The temperatures of steel-concrete composite beam cross-sections under nature condition were tested, the formulae of steel-concrete composite beam interfacial shear force, shear stress, relative slide strain and deformation, flexural deformation curvature were derived by using temperature gradient calculation model and elastic theory. Analysis result shows that there is temperature difference in the cross-section, and the temperature distribution of concrete flange slab is uneven. The maximum interfacial shear force is at the midspan and decreases to zero at the end of beam. The maximum interfacial shear stress, relative slide strain and deformation are at the end of beam and decrease to zero at the midspan. Interfacial force and deformation are linearly proportional to temperature difference, and the slope is associated with the temperature distribution modes of concrete slab. The temperature distribution mode and thickness of concrete slab are the main influence factors of interfacial force and deformation. 1 tab, 11 figs, 17 refs.

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Last Update: 2013-03-30