EXPERIMENTAL AND THEORETICAL STUDY ON THE BEHAVIOR OF THE LAMINATED ACTION OF STEEL-CONCRETE COMPOSITE BEAM IN NEGATIVE BENDING MOMENT REGION

被引：5
作者：
Liang, Xian [1 ]
Duan, Shu-Jin [1 ]
Wang, Yuan-Yuan [1 ]
Zhang, Yan-Qing [1 ]
机构：
[1] Shijiazhuang Tiedao Univ, Res Inst Struct Engn, Shijiazhuang, Hebei, Peoples R China
来源：
ADVANCED STEEL CONSTRUCTION | 2020年 / 16卷 / 03期
关键词：
Composite-laminated action beam; Cracking resistance; Slippage; Bearing capacity; Double composite beam; Experimental study;
D O I：
10.18057/IJASC.2020.16.3.3
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A new type of steel-concrete composite-laminated action beams (CLB) is developed to improve the crack resistance of top concrete slabs. It is an improved version of double steel-concrete composite beams (DCB), in which the shear stress between top concrete slab and upper steel flange is released by the uplift-restricted and slip-permitted connectors (URSP). To investigate the static mechanical behavior of CLBs in the negative moment region, an experimental test on two CLB specimens and one DCB specimen was carried out, and the theoretical study on the distribution equation of interface slip, the calculation formulas of sectional bending stiffness and ultimate bending moments was conducted. The results show that although the flexural bearing capacity of CLB is slightly lower than that of DCB, the crack resistance was markedly better than that of DCB. The slips and ultimate bending moments predicted with the simplified formulas are good in agreement with tests results. Copyright (C) 2020 by The Hong Kong Institute of Steel Construction. All rights reserved.
引用
收藏
页码：216 / 222
页数：7
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