单向及双向布篾工程竹材-钢填板连接件力学性能研究

李智; 李百鹏; 彭洋; 王睿

doi:10.13204/j.gyjzG22110502

单向及双向布篾工程竹材-钢填板连接件力学性能研究

doi: 10.13204/j.gyjzG22110502

李智^1,2,
李百鹏³,
彭洋^3, ,,
王睿⁴

1. 浙江大学建筑工程学院, 杭州 310058;
2. 浙江大学平衡建筑研究中心, 浙江大学建筑设计研究院有限公司, 杭州 310058;
3. 南京工业大学土木工程学院, 南京 211816;
4. 浙江大学-伊利诺伊大学厄巴纳香槟校区联合学院, 浙江海宁 314400

基金项目:

国家重点研发计划（2019YFD1101002）；国家自然科学基金项目（51878343）。

详细信息

作者简介:
李智,男,1986年出生,博士,副研究员。

通讯作者:
彭洋,yang.peng@njtech.edu.cn。

计量
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- 被引次数: 0
出版历程
- 收稿日期: 2022-11-05
- 网络出版日期: 2023-10-17

Experimental Research on Mechanical Properties of Connections Between Steel Plates and Unidirectional and Multidirectional Laminated Engineered Bamboo

LI Zhi^1,2,
LI Baipeng³,
PENG Yang^{3
, ,},
WANG Rui⁴

1. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China;
2. Center for Balance Architecture, Architectural Design & Research Institute of Zhejiang University Co., Ltd., Hangzhou 310058, China;
3. College of Civil engineering, Nanjing Tech University, Nanjing 211816, China;
4. Zhejiang University/University of Illinois at Urbana-Champaign Institute, Haining 314400, China

摘要

摘要: 研究了工程竹结构中螺栓及空芯铆钉连接件的力学性能，为其在工程竹结构中的应用提供理论与技术支撑。采用三点弯曲试验测试了不同直径的4.8级、8.8级螺栓和空芯铆钉的名义屈服强度和塑性弯矩。采用半孔法测试了不同类型竹材在主纤维方向和次纤维方向的销槽承压强度。采用单调拉伸和滞回试验测试了钢填板螺栓和空芯铆钉连接件的承载力、刚度和延性指标，并将试验测得的承载力值与基于延性和脆性破坏模型下的钢-竹节点的承载力估算值进行比较，确定了合适的承载力估算公式。研究结果表明：竹材是一种各向异性表征明显的脆性工程材料；钢材的屈服破坏和竹材的剪切破坏是钢-竹连接的主要破坏模式。通过合理的连接件设计和双向布篾，可使竹连接件形成以钢材屈服为主的延性破坏模式，并且可通过相应的屈服模型，估算竹-钢填板连接件承载能力。
- 工程竹材 /
- 钢填板 /
- 连接件 /
- 力学性能 /
- 屈服模型
Abstract: The mechanical properties of bolts and hollow rivet connectors in engineering bamboo structures were studied to provide theoretical and technical support for applying the above connectors in glubam designs. The nominal yield strength and a plastic bending moment of grade 4.8 and 8.8 bolts, hollow rivets of different diameters were tested by using the three-point bending method. The semi-hole method tested the embedment strength of different types of bamboo in the main-fiber and the less-fiber directions. Monotonic and hysteretic tests tested the bearing capacity, stiffness, and ductility of the bamboo-steel-bamboo connections. The bearing capacity values measured by the test were compared with the bearing capacity estimation values through corresponding failure modes, and the appropriate estimation formula was determined. The experimental results showed that bamboo was a brittle engineering material with pronounced anisotropy. The yield failure of steel and the shear failure of bamboo were the main failure modes of bamboo-steel-bamboo connections studied herein. Through proper connector design and cross-laminated strips, the above connectors could form a ductile failure mode dominated by steel yielding. Through the corresponding yield model, the bearing capacity of the bamboo-steel-bamboo connection could be estimated.
- engineered bamboo /
- steel plate /
- connection /
- mechanical properties /
- yield model

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