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Research on the Tension Performance of Dahurian Larch Joints Connected by Truss Plates

Author: XiJia
Tutor: ZhaoRongJun
School: Chinese Academy of Forestry
Course: Wood Science and Technology
Keywords: Larix gmelinii Tooth plate node Tooth ultimate bearing capacity The tooth plates ultimate pull bearing capacity Tooth anti- slip bearing capacity Foschi formula Ductility ratio Finite element model
CLC: S781.82
Type: Master's thesis
Year: 2009
Downloads: 39
Quote: 2
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Abstract


The tooth plates nodes is important connections in light wood frame truss structure , wide range of applications , the the clear component materials teeth plate connection performance is an important step in the wood used in modern wooden structure . Localization trend , combined with modern wood structure domestic L. gmelinii dimension lumber imports tooth plate connectors constructed node joining node tensile properties of L. gmelinii tooth plate . Test test the Larix gmelinii tensile modulus of elasticity of the lumber used to make tooth plate node , stickers strain gauge and tested according to GB50005-2003 tensile properties of the tooth plate of four constructed node . The results show that : clear tooth ultimate bearing capacity of the design value , and the tooth plate pull ultimate bearing capacity design values ??; the calculated node teeth anti- slip bearing capacity ; Foschi formula can get good results on the test curve fitting ; two two methods -Foschi formula method and tangent method can attain such the node performance parameters of various tooth plate error is small , both methods can be employed ; raised tooth plate node ductility than conservative calculation method , derived tooth plate node ductility with tooth plate node constructed parallel to grain nodes was significantly higher than the stripes node , parallel to grain node ductility ratio greater than 2.0 , the requirements on the seismic structure ductility ratio ; larch modulus of elasticity of tooth plate the impact of the performance parameters of the nodes is not constant , not significant ; using the finite element software of ANSYS 9.5 establish simulation tensile node model , in the the nodes small deformation stage , simulation results and experimental curves error of less than 5% .

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CLC: > Agricultural Sciences > Forestry > Forest harvesting and utilization > Wood Science > Various species of wood > Coniferous wood
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