木结构螺栓连接试验研究及承载力设计值确定

发布时间：2018-01-24 11:08

本文关键词： 木结构销连接螺栓连接屈服模式静力试验设计值承载力　出处：《建筑结构学报》2016年04期 　论文类型：期刊论文

【摘要】：现行木结构设计规范只规定了相同强度等级木构件螺栓连接承载力的计算方法,不能满足工程实践中连接不同强度等级木构件的需要。采用东北落叶松和樟子松木材,分别进行了销槽承压试验和螺栓连接性能试验。试验验证了欧洲销连接屈服模式,并证明了在我国规范中螺栓连接设计考虑圆钢销塑性不充分发展的假定更符合实际情况。提出了销槽承压有效长度系数及螺栓连接承载力建议计算式,并引入了钢材的弹塑性强化系数,以体现钢材特性对承载力的影响。在保持与现行木结构设计规范可靠度一致的条件下,对螺栓连接的承载力设计值进行了校准,得到了对应于各种屈服模式的抗力分项系数。所提出的螺栓连接承载力建议计算式能用以计算不同强度等级木构件螺栓连接的承载力,且与现行规范的计算结果基本一致。
[Abstract]:The design specification of the wooden structure provides only the calculation method of the bearing capacity of the same strength grade wooden connecting bolts, can not meet the needs of engineering practice in different strength grade of timber structures connected. The Northeast Larch and pine wood, respectively the dowel bearing test and bolt connection performance test. Test the European pin connection yield model. And it is proved that the Chinese standard bolt pin plastic design considering the assumption is not fully developed more in line with the actual situation. The dowel bearing effective length coefficient and bolt bearing capacity formulas suggested, and the steel plastic hardening coefficient is introduced to reflect the characteristics of the steel bearing capacity. In the current conditions and wood structure design standard reliability design to keep consistent, value calibrated bearing capacity of bolted connections are obtained corresponding to various yield. The proposed partial connection coefficient of resistance is the recommended formula for calculating the bearing capacity of bolted joints. It can be used to calculate the bearing capacity of bolted joints of wood members with different strength grades, which is basically the same with the results of current codes.

【作者单位】：哈尔滨工业大学结构工程灾变与控制教育部重点实验室;哈尔滨工业大学土木工程学院;
【基金】：国家自然科学基金项目(51278154)
【分类号】：TU366.2
【正文快照】： 0引言木结构中销连接常采用钢销、硬木销、螺栓、圆钉或木螺钉等连接件,其中采用螺栓作连接件的又称为螺栓连接,是木结构销连接中应用最多的连接形式。在现行GB 50005—2003《木结构设计规范》[1]中螺栓连接设计计算假定被连接木构件的木材材质相同,且假定连接达到极限状态的

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