Tests of bare and concrete-filled CHS T-joints with concave chord under axial compression
Tests of bare and concrete-filled CHS T-joints with concave chord under axial compression
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裸露和混凝土填充 CHS T 型接头凹弦轴压试验
DOI：
10.1016/j.conbuildmat.2015.04.056
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发表时间：
2015-09
影响因子：
7.4
通讯作者：
Chaoyang Wang
中科院分区：
文献类型：
--
作者：
Yu Chen;Ran Feng;Chaoyang Wang
进行了一系列凹弦T型钢管混凝土节点和裸T型钢管混凝土节点的轴压试验。通过将弦杆构件热轧弯曲成3种不同曲率半径，对支撑构件施加轴向压力，共制作了16个试件，其中6个试件为凹弦杆裸节点，6个试件为凹弦杆内填充混凝土节点，4个试件为直弦杆裸节点和直弦杆内填充混凝土节点。给出了节点的承载力、破坏形态、轴力-竖向位移曲线、轴力-弦杆变形曲线和应变分布曲线。分析了凹形弦杆曲率半径和弦杆内填充混凝土对节点强度和受力性能的影响。结果表明，凹弦T型相贯节点的极限承载力普遍高于传统的直弦T型相贯节点。在弦杆中填充混凝土后，内凹型T型钢管节点的极限承载力得到了显著提高，且大β比T型钢管节点的极限承载力提高幅度要比小β比T型钢管节点大得多。通过试验强度与设计强度的对比可以看出，无论是传统的T形钢管裸节点还是T形钢管裸节点，现行的设计规范都偏于保守。
A series of tests were conducted on bare and concrete-filled circular hollow section (CHS) T-joints with concave chord under axial compression. A total of 16 specimens were fabricated by hot-rolled bending the chord members into curvature with three different radii to apply axial compression force to the brace members, in which 6 specimens were tested with bare concave chord, 6 specimens were tested with concrete filled in the concave chord only, and 4 traditional bare and concrete-filled CHS T-joints with straight chord were also tested for comparison. The joint strengths, failure modes, axial load–vertical displacement curves, axial load–chord deformation curves and strain distribution curves of all specimens are reported. The effects of curvature radius of concave chord and concrete filled in the chord member on the joint strength and behaviour were evaluated. It is shown from the comparison that the ultimate strengths of the CHS T-joints with concave chord are generally larger than those of the traditional CHS T-joints with straight chord. Furthermore, the ultimate strengths of CHS T-joints with concave chord are significantly enhanced by filling the concrete in the chord member only, and the enhancement of the ultimate strengths of the CHS T-joints with largeβratio is much more pronounced than that of the CHS T-joints with smallβratio. It can be generally concluded from the comparison between the test strengths and the design strengths that the current design rules are generally conservative for both traditional bare CHS T-joints with straight chord and bare CHS T-joints with concave chord.
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影响因子：
4.1
作者：
Sakai, Y;Hosaka, T;Mitsuki, K
通讯作者：
Mitsuki, K
钢管混凝土CHS连接试验研究与设计
影响因子：
4.1
作者：
陈驹
通讯作者：
陈驹
DOI：
10.1201/b18121-13
发表时间：
2009-04
期刊：
--
影响因子：
--
作者：
C. Arya
通讯作者：
C. Arya
影响因子：
5.5
作者：
M. Fong;Siu-Lai Chan;B. Uy
通讯作者：
M. Fong;Siu-Lai Chan;B. Uy
影响因子：
5.5
作者：
Wei Shen;Yoo Sang Choo
通讯作者：
Wei Shen;Yoo Sang Choo