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采用胶合竹梁、双组份环氧树脂胶黏剂,不同直径和长度的公制螺纹杆,进行胶合竹顺纹双端植筋拉伸试件制备及测试,初步分析研究了植入深度和植筋杆直径2个因素对胶合植筋强度和破坏模式的影响。抗拉试验破坏模式主要为植筋杆的拔出破坏和螺纹杆的韧性断裂破坏2种模式,其中植筋杆的拔出破坏位于胶合竹/胶黏剂界面;胶合竹顺纹双端植筋的破坏载荷及名义剪切强度随螺纹杆直径和植入深度增加而增大;胶合竹基材较胶合木基材渗透性差,植筋杆受力不能很好地传递到竹材内部,是影响抗拔载荷主要因素之一。
Using glulam bamboo beam, two-component epoxy adhesive, different diameter and length of the metric screw rod, glued bamboo grain double-ended tensile test specimens were prepared and tested, preliminary analysis of the implant depth and plant Influence of Two Factors on the Strength and Failure Mode of Glued Bar. Tensile test failure modes mainly include pull-out failure of anchorage bar and ductile fracture failure of thread rod, in which pull-out damage of anchorage-bar is located at the interface of adhesive bamboo / adhesive; The destructive load and the nominal shear strength increase with the increase of screw rod diameter and implant depth; the permeability of glued bamboo substrate is worse than that of glued wood substrate, and the stress of anchorage rod can not be well transmitted to the interior of bamboo, Pulling load one of the main factors.