Structural design of long-span steel-glulam composite roof and experimental study on flexural properties

被引：0

作者：

Zhang X. ^{[1
]}

Liu W. ^{[1
]}

Ren Q. ^{[1
]}

Zhou J. ^{[2
]}

Li Z. ^{[3
]}

Wang J. ^{[1
]}

Li Y. ^{[1
]}

Liu Z. ^{[1
]}

Yang X. ^{[1
]}

机构：

[1] China Architecture Design & Research Group, Beijing

[2] Suzhou Crownhomes Wood Structure Technology Co., Ltd, Suzhou

[3] School of Civil Engineering, Institute of Disaster Prevention, Sanhe

来源：

Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷

关键词：

glulam wood structure; long span string beam; mechanical behavior; static load test; steel and wood composite structure;

D O I：

10.14006/j.jzjgxb.2023.S1.0018

中图分类号：

学科分类号：

摘要：

Based on a large-scale museum project, a large-span steel-wood composite tensed-string roof with a maximum span of 41. 5 m was proposed. It is obtained by analyzing the overall structure that the maximum inter-story displacement ratio is 1 / 370 under frequent earthquakes, and the stress ratio of most components is below 0. 8. Aiming at this structural form, one 1: 3 scaled steel-wood composite string beam was designed. The mechanical performance and force mechanism were studied by static load test, and the bearing capacity, strain, deflection and other indexes were analyzed. The test results show that when the load increases to 2 times the design load, the joint tends to open, but there is no major damage on the whole. The section generally meets the assumption of flat section. The prestressed cable can work cooperatively with the wooden beam, and the strain of the cable increases linearly with the load level. The prestressed steel cable of the wooden beam enhances the tension area of the wooden beam. The neutral axis of the beam is inclined to the tension area as a whole, and the prestress can effectively reduce the tension of the wood beam. © 2023 Science Press. All rights reserved.

引用

页码：157 / 164

页数：7

共 24 条

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