摘要
本文回顾了国内外木结构钉连接的研究进展,首先介绍了用以分析钉连接承载性能的屈服理论及其建立与发展,然后从连接形式、衰退效应、抗侧力与抗拔力共同作用、其他连接形式和钉连接形式的性能比较等四大方面阐述了国内对外钉连接侧向承载性能的研究。研究表明:不同的钉子性能和施工工艺会导致钉连接承载性能的差异;设计钉连接时,需考虑其群体效应和楔入效应;反复荷载作用、荷载持续效应、环境的温湿度变化以及腐蚀等因素都会降低钉连接的承载力和刚度;钉连接的抗侧力和抗拔力相互影响并共同作用;木螺钉等因其钉杆上的螺纹而具有较强的抗拔能力,从而也提高了钉连接的抗侧力性能;钉胶结合可大大增强钉连接的承载力和刚度。
This paper is focus on the nail connection of wood structures. A brief introduction about the yield theory which is used for predicting the lateral resistance of dowel-type connections is given. And the theorization and development of the yield theory are presented in detail. Some researches on the nail connection of wood structures, such as the specimen configuration, the decline effect, the combine resistance of lateral loading and pulling, the performance comparison between nail connection and other connection are reviewed in aspects. Different nail properties and constructional details will induce variant load：carrying properties of nail connection; the group effect and the wedge effect should be considered in design of nail connection; the lateral resistance and the draw resistance will interact; repetitive loading, load duration effect, temperature and relative humidity variety, and the molder of wood member will reduce the carrying capacity and the stiffness of nail connection with variant degree ; the screw nail connection has higher draw resistance and lateral resistance for its thread around nail rod, comparing with the common nail connection; the nail-glue combination can enhance the carrying capacity and the stiffness of nail connection greatly.
出处
《结构工程师》
2009年第4期152-157,共6页
Structural Engineers
基金
国家自然科学资金资助项目(50508012)
温州市科技局资助项目(S2004A013)
关键词
木结构
销连接
钉连接
屈服理论
wood structure
dowel-type fastener
nail connection
yield theory
