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

卷:

40卷

期数:

2023年02期

页码:

59-68

栏目:

建筑结构

出版日期:

2023-03-30

文章信息/Info

Title:

Research on mechanical behavior of joints based on special-shaped connection in reticulated glulam shell

文章编号:

1673-2049(2023)02-0059-10

作者:

魏志鹏¹,李 军¹,李牧原²,盛 杰³,王 燕¹

(1. 青岛理工大学 土木工程学院,山东 青岛 266033; 2. 上海联创设计集团股份有限公司青岛分公司,山东 青岛 266033; 3. 滨州建筑工程施工图审查中心,山东 滨州 256600)

Author(s):

WEI Zhipeng¹, LI Jun¹, LI Muyuan², SHENG Jie³, WANG Yan¹

(1. School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, Shandong, China; 2. Shanghai Lianchuang Design Group Co., Ltd. Qingdao Branch, Qingdao 266033, Shandong, China; 3. Binzhou Construction Drawing Review Center, Binzhou 256600, Shandong, China)

关键词:

胶合木网壳;  异型连接件;  轴压性能试验;  受弯性能试验;  受力性能

Keywords:

reticulated glulam shell;  special-shaped connector;  axial compression performance test;  flexural performance test;  mechanical behavior

分类号:

TU311

DOI:

10.19815/j.jace.2021.10001

文献标志码:

A

摘要:

为了减轻节点自重同时提高结构美观性,有必要开展新型木网壳节点连接形式研究。以已提出的新型K6网壳销式连接节点作为原始方案,进行2次改进。通过轴压性能试验确定改进方案1的有效性后,对改进节点进行抗弯性能试验。在此基础上提出改进方案2,并采用有限元分析的方法研究因试验条件受限导致的难以同时施加轴压力和竖向荷载的问题。结果表明:改进方案1受安装偏差影响较小,其实际承载力未像原始方案那样低于预期承载力设计值; 节点中的异型钢连接件自重较目前应用较多的网壳节点轻20%～50%,在轴压性能试验中具有较好的弹性变形性能,抗弯性能试验中具有一定的塑性变形性能; 改进方案2节点在轴压和竖向荷载共同作用时的受力性能明显优于竖向荷载单独作用时,说明轴压力对节点抗弯承载力有利; 改进方案2节点抗弯承载力较改进方案1更有优势,经数据优化后提出的钢板厚度建议可为工程设计提供参考。

Abstract:

In order to reduce the self-weight of joints and improve the aesthetics of structures, it is necessary to carry out the research on the new connection form of reticulated timber shell joints. The new pin connection for K6 reticulated shell was taken as the original scheme, and the scheme was improved twice. After the effectiveness of the improved scheme 1 was determined by the axial compression performance test, the flexural performance test of the improved joint was carried out. On the basis, the improved scheme 2 was proposed, and the finite element analysis method was used to research the problem that it was difficult to apply axial pressure and vertical load at the same time due to the limited test conditions. The results show that the improved scheme 1 is less affected by the installation deviation, and its actual bearing capacity is not lower than the expected design value as the original scheme. The self-weight of the special-shaped steel connector in this joint is 20%-50% lighter than that of the reticulated shell joint, which is widely used at present. It has good elastic deformation performance in the axial compression performance test and certain plastic deformation performance in the flexural performance test. The joint mechanical performance of the improved scheme 2 under the combined action of axial compression and vertical load is obviously better than that under the single action of vertical load, which illustrates that the axial pressure is beneficial to the flexural capacity of the joint. The flexural capacity of the joint of improved scheme 2 is more advantageous than that of improved scheme 1. The steel plate thickness suggestion put forward after data optimization can provide reference for the engineering design.

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相似文献/References:

[1]郁有升,周其霖,韩俊良.带齿夹板钢木连接节点受力机理[J].建筑科学与工程学报,2020,37(04):60.[doi:10.19815/j.jace.2019.05065]
　YU You-sheng,ZHOU Qi-lin,HAN Jun-liang.Mechanical Mechanism of Steel-glulam Connections with Teeth on Splints[J].Journal of Architecture and Civil Engineering,2020,37(02):60.[doi:10.19815/j.jace.2019.05065]

备注/Memo

备注/Memo:

收稿日期:2021-10-09
基金项目:国家重点研发计划项目(2017YFC0703506)
作者简介:魏志鹏(1996-),男,工学硕士研究生,E-mail:weizhipeng96@163.com。
通信作者:李 军(1966-),女,工学博士,副教授,E-mail:kitjun76@qut.edu.cn。

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更新日期/Last Update: 2023-03-20