|Table of Contents|

Bending Fatigue Behavior of High-performance Concrete Simply-supported Beams(PDF)

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

Issue:
2008年01期
Page:
96-101
Research Field:
Publishing date:
2008-03-20

Info

Title:
Bending Fatigue Behavior of High-performance Concrete Simply-supported Beams
Author(s):
XIAO Jian-zhuang;  CHEN De-yin;  ZHA Quan-fan
Department of Architectural Engineering, Tongji University, Shanghai 200092, China
Keywords:
high-performance concrete;  simply-supported beam;  bending fatigue behavior;  deflection;  strain of steel bar
PACS:
TU502.6
DOI:
-
Abstract:
Based on the static and fatigue bending tests of 10 simply-supported beams under three-point loading, the strength grade of concrete, two types of steel bars and different load levels were studied for the fatigue behavior of high-performance concrete beams. Through analyzing the mid-span deflection of beams, strains of concrete in compressive zone and strains of steel bars in tensile zone, as well as crack development regularity of the beams, the fatigue damage process of high-performance concrete beams under flexural repeated loading were observed. The equation of fatigue life and deflection calculation formula of beams after fatigue loading of high-performance concrete beams were put forward by combining the fatigue damage analysis of materials both for high-performance concrete and steel bars. Meanwhile, theoretical fatigue life and deflection were compared with test ones. Finally, the difference between bending fatigue behavior of high-performance concrete beams and that of normal strength concrete beams was comparatively analyzed.

References:

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Last Update: 2008-03-20