工程力学 ›› 2019, Vol. 36 ›› Issue (1): 96-103,118.doi: 10.6052/j.issn.1000-4750.2017.11.0792

• 土木工程学科 • 上一篇    下一篇

重组竹钢夹板螺栓连接承载力试验研究

崔兆彦1, 徐明1, 陈忠范1, 王飞2   

  1. 1. 东南大学混凝土及预应力混凝土结构教育部重点试验室, 江苏, 南京 210096;
    2. 安徽省电力设计院有限公司, 安徽, 合肥 230001
  • 收稿日期:2017-11-01 修回日期:2018-01-30 出版日期:2019-01-29 发布日期:2019-01-10
  • 通讯作者: 徐明(1972-),男,黑龙江人,博士,研究员级高工,东南大学土木工程学院实验中心副主任,主要从事工程竹力学性能及抗火性能研究(E-mail:xuming@seu.edu.cn). E-mail:xuming@seu.edu.cn
  • 作者简介:崔兆彦(1989-),男,山东人,博士生,主要从事工程竹节点力学性能及抗火性能研究(E-mail:cuizyan111@163.com);陈忠范(1961-),男,江苏人,教授,博士,博导,主要从事防灾减灾及防护工程研究(E-mail:101003944@seu.edu.cn);王飞(1992-),男,安徽人,助理工程师,硕士,主要从事重组竹螺栓节点抗火性能研究(E-mail:404773118@qq.com).
  • 基金资助:
    国家重点研发计划项目(2017YFC0703503);江苏省自然科学基金项目(BK20151406)

EXPERIMENTAL STUDY ON BEARING CAPACITY OF BOLTED STEEL-PSB-STEEL CONNECTIONS

CUI Zhao-yan1, XU Ming1, CHEN Zhong-fan1, WANG Fei2   

  1. 1. Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing, Jiangsu 210096, China;
    2. Anhui Electric Power Design Institute Ltd, Hefei, Anhui 230001, China
  • Received:2017-11-01 Revised:2018-01-30 Online:2019-01-29 Published:2019-01-10

摘要: 螺栓连接因其制作简单、安全可靠和施工方便的优点在现代竹木结构建筑中应用广泛。为研究重组竹钢夹板螺栓连接力学性能,对12组试件进行单轴拉伸试验研究与分析,探讨了厚径比、间距、端距等因素对螺栓连接破坏形态及承载能力的影响规律。研究结果表明:当试件厚径比为5.0~5.7时,单螺栓连接和多螺栓连接破坏形态均表现为单铰屈服模式,当试件厚径比为8.0~10.0时,破坏形态均表现为双铰屈服模式;随着螺栓直径、端距和间距增加,螺栓连接承载力逐渐增加,单列螺栓布置的螺栓连接延性较好,而增加螺栓列数虽然可以提高螺栓连接初始刚度但延性变差;通过将螺栓连接试验结果与国内《木结构设计规范》、《木结构设计手册》和Eurocode 5计算公式计算结果对比分析,国内规范计算结果较为保守,Eurocode 5计算公式具有更好的适用性。

关键词: 重组竹, 钢夹板螺栓连接, 静力试验, 破坏形态, 承载能力

Abstract: Because of the advantage of the simple fabrication, high security and construction convenience, the bolted connection is widely applied in modern engineered bamboo and wood structures. In order to investigate the mechanical behavior of the bolted steel-Parallel strand bamboo-steel connections, twelve groups of specimens were tested under uniaxial tensile load. The effects of thickness to diameter ratio, fastener spacing and the end distance on the failure modes and the bearing capacity were reported in the paper. The results indicate that the failure mode of single and multi-bolted connections is the occurrence of one plastic hinge when the thickness to diameter ration is 5.0-5.7, and the occurrence of two plastic hinges when the thickness to diameter ration is 8.0-10.0. As the fastener diameter, spacing or the end distance increases, the bearing capacity gradually increases. The bolted connections with one column show good ductility, which gets worse as the number of columns increases. Comparing the experimental results with the calculations using the domestic code for wood structure, wood structure design manual and Eurocode 5, it was found that the domestic code is conservative and the Eurocode 5 has better applicability.

Key words: PSB, steel-PSB-steel connection, static test, failure mode, bearing capacity

中图分类号: 

  • TU366.3
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