摘要
通过试验研究了拔稍离心成型预应力钢纤维混凝土电杆在反复荷载作用下的裂缝的开展与闭合,变形性能和极限承载力等受力性能.结果表明:电杆的抗裂度和卸载系数较高,表现出良好的裂缝闭合性能和变形回复性能,裂缝呈短细非贯通分布状态,并呈现出一定的延性破坏性质.研究成果为此类杆的线路工程建设提供了科研依据.
Tests are carried out to study the repetitive loading behaviors of unequal-diameter centrifugal shaping presressed steel fiber reinforced concrete pole, mainly including the crack developing and closing, deformation and ultimate resistance. It is proved that the cracking-strength and the unloading coefficient of the pole is higher, the performance of crack closing and deformation recovery is well, the crack distribution states short-thin and unlinked up, and the ductile failure property is improved. It can be used as basis of construction of the transmission line project.
出处
《建筑技术开发》
2005年第8期78-80,共3页
Building Technology Development
基金
河南省自然科学基金，河南省电力公司资助项目
关键词
预应力钢纤维混凝土
电杆
离心成型
加卸载
裂缝
挠度
Presressed steel fiber reinforced concrete
Unequal-diameter pole
Centrifugal shaping
Repetitive loading
Crack
Deflection
