输电铁塔单双角钢变换节点试验研究与承载力计算方法_杨垂玮VIP免费

Steel Construction. 2017 ( 6) ，Vol. 32，No. 222输电铁塔单双角钢变换节点试验研究与承载力计算方法*杨垂玮1孟宪乔1兰志文2陈旭阳2许渊2( 1． 中国能源建设集团安徽省电力设计院有限公司，合肥230601; 2． 南昌大学建筑工程学院，南昌330031)摘要: 主要针对架空输电线路铁塔设计中常用的单双角钢变换节点进行承载力研究，建立其力学模型，对节点强度和稳定性进行理论分析，提出节点水平连接板板厚的计算方法，给出节点荷载传递系数。对不同板厚的单双角钢变换节点进行足尺试验和有限元分析，并将试验结果与有限元结果进行对比分析，二者吻合较好，验证了单双角钢变换节点的荷载传递机理，同时验证了水平连接板设计计算方法的可行性。关键词: 角钢塔; 单双角钢变换节点; 承载力; 有限元; 足尺模型试验DOI:10. 13206 /j． gjg201706010BEAＲING CAPACITY CALCULATION METHOD AND EXPEＲIMENTAL STUDYOF THE KEY CONVEＲSION JOINTS OF SINGLE-ANGLE AND DUAL-ANGLESTEEL FOＲ POWEＲ TＲANSMISSION TOWEＲYang Chuiwei1Meng Xianqiao1Lan Zhiwen2Chen Xuyang2Xu Yuan2( 1． Anhui Electric Power Design Institute of China Energy Engineering Group，Hefei 230601，China;2． College of Architectural and Civil Engineering，Nanchang University，Nanchang 330031，China)ABSTＲACT: The paper focused on the bearing capacity of the key conversion joint of single-angle and dual-angle steel inthe ultra-high-voltage power transmission tower design． The mechanical model was built to conduct a theoretical analysis onthe strength and stability of key conversion joints，a method to calculate the thickness of horizontal connection plate for thejoints was also presented，so as to obtain the joint load transfer coefficient． The full-scale test and the finite elementanalysis for the conversion joints of single angle-and dual-angle steel with different plate thickness were conducted．Meanwhile，a comparative analysis on the experimental and finite results was implemented to figure out the source of erroran...