输电铁塔受拉角钢构件块剪及其计算方法试验研究
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摘要
通过对不同规格、材质、螺栓端距、螺栓间距等情况下受拉角钢构件的承载力试验,研究块剪的破坏特征。结果表明:单排螺栓连接情况下块剪对构件受拉承载力起控制作用,必须验算块剪,特别是对于一些小规格构件,而双排螺栓连接构件一般可不验算块剪。同时通过试验结果与DL/T 5154—2012《架空输电线路杆塔结构设计技术规定》计算方法及其修正方法的计算结果的对比,推荐采用修正方法进行受拉角钢构件的块剪计算,其计算结果与试验结果更为相符,也更能有效提高构件的安全性能。
In the paper,the failure characteristics of block shear were studied through bearing capacity tests of angle steel members with different specifications,materials,bolt end spacing and bolt spacing. The results showed that the block shear played a controlling role in the tension bearing capacity of members under the condition of single row bolt connection. It was necessary to check the block shear,especially for some small size members. While the double-row bolted connections could not be checked block shear. At the same time,by comparing the test results with the calculation results of the current standard calculation method and the revised method in China,it was recommended that the revised method should be used to calculate the block shear of the tensile angle steel members. The calculation results were more consistent with the actual test results and could effectively improve the safety performance of the members.
In the paper,the failure characteristics of block shear were studied through bearing capacity tests of angle steel members with different specifications,materials,bolt end spacing and bolt spacing. The results showed that the block shear played a controlling role in the tension bearing capacity of members under the condition of single row bolt connection. It was necessary to check the block shear,especially for some small size members. While the double-row bolted connections could not be checked block shear. At the same time,by comparing the test results with the calculation results of the current standard calculation method and the revised method in China,it was recommended that the revised method should be used to calculate the block shear of the tensile angle steel members. The calculation results were more consistent with the actual test results and could effectively improve the safety performance of the members.
引文
[1]车达,韩大刚,杨洋,等.输电铁塔受拉构件块剪计算方法研究[J].山东电力技术,2018,45(7):44-49.
[2]李从春.螺栓连接板件受拉性能及承载力分析[D].重庆:重庆大学,2008.
[3]TEH L H,YAZICI V.Unconventional Block Shear Failures of Bolted Connections in Cold-Reduced Steel Sheets[J].Engineering Structures,2013,56(11):567-571.
[4]LKULAK G L,GRONDIN G Y.Block Shear Failure in Steel Members:A Review of Design Practice[J].Engineering Journal,2001,38(4):199-203.
[5]GROSS J M,ORBISON J G,ZIEMIAN R D.Block Shear Tests in High-Strength Steel Angles[J].Engineering Journal,1995,32(3):117-122.
[6]国家能源局.架空输电线路杆塔结构设计技术规定:DL/T5154-2012[S].北京:中国计划出版社,2012.
[7]中华人民共和国建设部.钢结构设计规范:GB 50017-2003[S].北京:中国计划出版社,2003.
[8]中华人民共和国住房和城乡建设部.钢结构设计标准:GB50017-2017[S].北京:中国建筑工业出版社,2017.
[9]American Society of Civil Engineers.Design of Latticed Steel Transmission Structure:ASCE 10-97[S].Reston:American Society of Civil Engineers,2000.
[10]British Standards Institution.Overhead Electrical Lines Exceeding AC 1 kV(Part 1:General Requirements:Common Specifications):BS/EN 50341-1:2012[S].London:BSI,2012.
[11]国家能源局.输电线路铁塔制图和构造规定:DL/T 5442-2010[S].北京:中国电力出版社,2010.
[2]李从春.螺栓连接板件受拉性能及承载力分析[D].重庆:重庆大学,2008.
[3]TEH L H,YAZICI V.Unconventional Block Shear Failures of Bolted Connections in Cold-Reduced Steel Sheets[J].Engineering Structures,2013,56(11):567-571.
[4]LKULAK G L,GRONDIN G Y.Block Shear Failure in Steel Members:A Review of Design Practice[J].Engineering Journal,2001,38(4):199-203.
[5]GROSS J M,ORBISON J G,ZIEMIAN R D.Block Shear Tests in High-Strength Steel Angles[J].Engineering Journal,1995,32(3):117-122.
[6]国家能源局.架空输电线路杆塔结构设计技术规定:DL/T5154-2012[S].北京:中国计划出版社,2012.
[7]中华人民共和国建设部.钢结构设计规范:GB 50017-2003[S].北京:中国计划出版社,2003.
[8]中华人民共和国住房和城乡建设部.钢结构设计标准:GB50017-2017[S].北京:中国建筑工业出版社,2017.
[9]American Society of Civil Engineers.Design of Latticed Steel Transmission Structure:ASCE 10-97[S].Reston:American Society of Civil Engineers,2000.
[10]British Standards Institution.Overhead Electrical Lines Exceeding AC 1 kV(Part 1:General Requirements:Common Specifications):BS/EN 50341-1:2012[S].London:BSI,2012.
[11]国家能源局.输电线路铁塔制图和构造规定:DL/T 5442-2010[S].北京:中国电力出版社,2010.