碳纤维布加固钢筋混凝土电杆承载力试验研究  

EXPERIMENTAL RESEARCH ON THE BEARING CAPACITY OF REINFORCED CONCRETE POLE STRENGTHENED BY CARBON FIBER REINFORCED POLYMER

作　　者：柯晓军[1,2] 陈宗平[2] 夏开全[3] 刘思远[3] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055 [2]广西大学土木建筑工程学院,南宁530004 [3]中国电力科学研究院,北京100055

出　　处：《工业建筑》2012年第4期69-72,共4页Industrial Construction

摘　　要：为了揭示采用碳纤维布(CFRP)加固钢筋混凝土电杆后的破坏机理和承载性能,完成4根混凝土电杆的试验研究,其中3根为碳纤维布加固的电杆和1根作对比的未加固电杆。通过试验观察各试件的受力全过程和破坏形态,获取荷载-位移全过程曲线和极限承载力等重要参数。研究结果表明:碳纤维布加固后,混凝土电杆的破坏过程没有明显预兆,破坏过程迅速,破坏形态表现为碳纤维被拉断;碳纤维布加固后,钢筋混凝土电杆的极限承载力有显著提高,提高的程度与碳纤维布粘贴层数有关,随着碳纤维布粘贴层数的增加,极限承载能力也跟着提高,但提高的程度与碳纤维布粘贴层数不呈比例。In order to reveal the failure mechanism and bearing capacity of extended service reinforced concrete pole strengthened with carbon fiber reinforced polymer（CFRP）,4 reinforced concrete poles were designed for bending test,including three reinforced concrete poles strengthened by CFRP and one common reinforced concrete pole.According to the test,the whole failure process,failure pattern,the complete loading-displacement curve and the ultimate bearing capacity were obtained.Experimental results showed that the failure progress of CFRP strengthening reinforced concrete pole was very rapid and no premonition,CFRP fracture was the final failure pattern of specimens.The concrete pole bearing capacity was improved apparently by CFRP strengthening technology.With the layer of CFRP increasing,the bearing capacity was improved,but the improvement was not linear.

关 键 词：碳纤维布(CFRP) 钢筋混凝土电杆 加固 承载能力 

分 类 号：TU375[建筑科学—结构工程]