西安交通大学土木工程系,西安,710049
网络首发:2013-09-10,
纸质出版:2013
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周磊 1, 汪楚清 1, 孙清 1, 等. 玻璃纤维增强复合材料输电塔节点承载力试验研究及有限元分析[J]. 西安交通大学学报, 2013,47(9):112-118+125.
Experimental Study and Finite Element Analysis on Ultimate Bearing Capacity of Joint of Glass Fiber Reinforced Polymer for Transmission Tower[J]. 2013, 47(9): 112-118+125.
周磊 1, 汪楚清 1, 孙清 1, 等. 玻璃纤维增强复合材料输电塔节点承载力试验研究及有限元分析[J]. 西安交通大学学报, 2013,47(9):112-118+125. DOI: 10.7652/xjtuxb201309019.
Experimental Study and Finite Element Analysis on Ultimate Bearing Capacity of Joint of Glass Fiber Reinforced Polymer for Transmission Tower[J]. 2013, 47(9): 112-118+125. DOI: 10.7652/xjtuxb201309019.
为了推广玻璃纤维增强复合材料(GFRP)在输电线路中的应用
对GFRP进行了材料力学性能试验
获得了基本力学性能参数; 进行了6个足尺寸GFRP节点试验
获得了节点构件的受力性能及破坏模式; 对试验模型进行了有限元分析
数值结果与试验结果吻合较好。试验与数值分析结果表明: GFRP具有很高的拉伸强度
并且顺纤维方向的拉伸强度远远大于垂直纤维方向的拉伸强度; GFRP节点承载力高
可满足输电塔的安全要求
为方便GFRP节点设计
建议取主材轴向应变5×10
-3
作为此种GFRP节点极限承载力临界值; 节点的薄弱部位位于钢套管与复合材料管的连接处
节点连接方式是影响节点极限承载力的主要因素。
To popularize the application of glass fiber reinforced polymer(GFRP)to power transmission tower
its mechanical properties are tested to obtain the fundamental mechanical parameters
and the performances and failure patterns of six full-scale GFRP connection joints are investigated. Static behaviors of the joints are also analyzed by the finite element model. Both experimental and numerical results show that GFRP material is endowed with high tensile strength
its tensile strength in parallel fiber direction gets extremely higher than that in transverse fiber direction
and GFRP joint with high bearing capacity can be used in transmission tower safely. The strain of 5×10
-3
is suggested as critical value of GFRP joint ultimate st
rength for design. The weakest part of this joint is located in the connection of GFRP tube and steel bush
and the connection type becomes the main factor affecting the joint ultimate strength.
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