选取试样尺寸、螺栓直径及含水率作为影响因素，对重组竹平行纹理方向的销槽承压性能进行了研究。结果表明：试样尺寸在满足设计最小值的前提下，对销槽承压强度无显著影响；试样的刚度不受长度的影响，但随厚度的增大而增大；随着螺栓直径的增大，销槽承压强度呈减小趋势，而试样的刚度呈增大趋势，并在螺栓直径≥12 mm后渐趋于稳定；随着含水率的增大，试样的刚度和销槽承压强度均呈下降趋势，含水率达到17%时，开始趋于稳定。
Abstract
In this paper, the bearing properties of dowel parallel to grain were studied based on dimension, bolt diameter and moisture content as test parameters. The results showed that there was no dimension effect on the dowelbearing strength when the dimensions reach the minimum requirements. The stiffness increased with thickness increasing, but it was not affected by length. With the bolt diameter increasing, the tested dowelbearing strength showed a decreasing trend, however, the stiffness showed an increasing trend and became more constant when the bolt diameters were bigger than 12 mm. In addition, the dowelbearing strength and stiffness decreased with moisture content increasing, and they became constant gradually when the moisture content was up to 17%.
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参考文献
［1］Smith I, Whale L R J, Anderson C, et al. Design properties of laterally loaded nailed or bolted wood joints[J]. Canadian Journal of Civil Engineering, 1988, 15(4):633-643.
［2］American Forest and Paper Association (AF&PA). National design specification for wood construction[S]. Washington D C:American Forest and Paper Association, 1991.
［3］American Society of Civil Engineers (ASCE). Load and resistance factored design for engineered wood construction[S]. Washington D C: American Society of Civil Engineers, 1996.
［4］Wilkinson T L. Dowel bearing strength (Research paper FPLRP505)[R]. Madison:Forest Products Laboratory, Forest Service, Department of Agriculture, 1991.
［5］刘柯珍. 落叶松胶合木梁柱连接节点设计与承载性能评价[D].北京：中国林业科学研究院，2011.
Liu K Z. Connection design and bearing performance evaluation for larch laminated wood beams and columns[D]. Beijing:Chinese Academy of Forestry, 2011.
［6］徐德良, 刘伟庆, 倪庚东. 木材-钢夹板螺栓连接的承载能力试验研究[J]. 江苏建筑, 2009(3):18-20,33.
Xu D L, Liu W Q, Ni G D. Experimental study on bearing capacity of bolted steelwoodsteel connections in timber structures[J]. Jiangsu Construction, 2009(3):18-20,33.
［7］徐德良, 刘伟庆, 杨会峰,等. 木材-钢填板螺栓连接的承载能力试验研究[J]. 南京工业大学学报:自然科学版, 2009, 31(1):87-91,96.
Xu D L, Liu W Q, Yang H F, et al. Experimental study on bearing capacity of bolted woodsteelwood connections in timber structures[J]. Journal of Nanjing University of Technology：Natural Sciences Edition, 2009, 31(1):87-91,96.
［8］ASTM. D576497a. Standard test method for evaluating dowelbearing strength of wood and woodbased products[S]. West Conshohocken P A:American Society for Testing and Materials,1997.
［9］Rammer D R, Winistorfer S G. Effect of moisture content on dowelbearing strength[J]. Wood and Fiber Science, 2001, 33(1):126-139.
［10］Rammer D R. Paralleltograin dowelbearing strength of two Guatemalan hardwoods[J]. Forest Products Journal,1999, 49(6):77-87.
［11］Whale L R J, Smith I. The derivation of design classes for nailed and bolted joints in Eurocode 5[C]// International Council for Building Research Studies and Documentation, Working Commission W18Timber Structures, 1988.
［12］Sawata K, Yasumura M. Determination of embedding strength of wood for doweltype fasteners[J]. Journal of Wood Science, 2002, 48(2):138-146.
［13］Fahlbusch H. A contribution to the problem of the bearing strength of bolts in wood under static loads (Report No. 49-09)[R]. Braunschweig, Germany:Institute for Mechanical Construction and Carpentry,1949.
［14］Winistorfer S G. Validation of the European yield model for nailed connections[C]// Proceedings of the Structures Congress 94. Atlanta, 1994.
［15］Koponen S. Embedding characteristics of wood in the grain direction[R]. Espoo, Finland: Helsinki University of Technology, Laboratory of Structural Engineering and Building Physics, 1991.
［16］尹思慈. 木材学[M].北京:中国林业出版社, 1996.
基金
收稿日期：2012-07-02修回日期：2012-10-18
基金项目：国家林业公益性行业科研专项项目（200904034）
第一作者：任海青，研究员。
Email： renhq@caf.ac.cn。
引文格式：任海青,李霞镇,钟永，等. 重组竹平行纹理方向销槽承压性能的影响因素[J]. 南京林业大学学报：自然科学版，2013，37（5）：103-107.
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