反复荷载作用下等径离心成型预应力钢纤维混凝土电杆试验研究  

Experimental on behaviors of equal-diameter centrifugal shaping prestressed steel fiber reinforced concrete pole under repetitive loading

作　　者：潘丽云[1] 张晓燕[1] 赵顺波[1] 高润东[1] 

机构地区：[1]华北水利水电学院工程材料与结构研究所,河南郑州450011

出　　处：《河南科学》2005年第5期708-711,共4页Henan Science

基　　金：河南省自然科学基金资助项目(0511051700);河南省电力公司科技计划项目

摘　　要：通过试验研究了等径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比较高,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.研究成果将为计划采用此类杆段的漯河～淮阳220 kV线路工程建设提供科研依据.Tests are carried out to study the repetitive loading behaviors of equal-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 220 kV transmission line project from Luohe to Huaiyang in Henan province.

关 键 词：预应力钢纤维混凝土 等径电杆 离心成型 加卸载 裂缝 挠度 

分 类 号：TU528.572[建筑科学—建筑技术科学]