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| Study on deflection and additional bending moment of slip-joint connection for multi-pyramidal steel pole considering stiffness reduction |
| Received:May 27, 2022 Revised:July 24, 2022 |
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| DOI：10.7511/jslx20220527001 |
| KeyWord:transmission line steel pole slip-joint connection Section moment of inertia deflection additional bending moment |
| Author | Institution |
| 潘峰 |
中国能源建设集团浙江省电力设计院有限公司, 杭州 |
| 陈远 |
大连海事大学土木工程学系, 大连 |
| 蔡勇 |
国网浙江省电力有限公司, 杭州 |
| 包玉南 |
中国能源建设集团浙江省电力设计院有限公司, 杭州 |
| 徐锃 |
中国能源建设集团浙江省电力设计院有限公司, 杭州 |
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| Abstract: |
| Multi-pyramid steel pipe poles are widely used in transmission lines around cities.A flange connection is usually used for pipe to pipe connection,and slip-joint connection is not widely used.In view of the relatively few research on the calculation method of deflection of multi-pyramid steel pipe poles,this paper will derive the common load (bending moment M,horizontal force P and uniformly distributed force q) according to the theory of differential equation of the deflection curve of a beam and the reduction of stiffness of a slip-joint joint and additional bending moment of a multi-pyramid slip-joint steel poles.Finally,typical nested steel pipe rods are selected for comparative analysis,and some important conclusions are drawn.This paper makes a detailed study on the deflection calculation of slip-joint steel poles,which can be used as a reference for the design of slip-joint connections of steel poles of transmission lines. |
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