Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support
The current lack of standardized calculation methods for disc-buckle-type steel pipe supports, coupled with unsafe calculation length coefficients, has resulted in frequent safety incidents leading to severe casualties and economic losses. In this paper, the semi-rigidity characteristics of joints w...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2075-5309/15/11/1955 |
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| author | Fankui Zeng Guoxin Zou Meng Ji Jianhua Zhang |
| author_facet | Fankui Zeng Guoxin Zou Meng Ji Jianhua Zhang |
| author_sort | Fankui Zeng |
| collection | DOAJ |
| description | The current lack of standardized calculation methods for disc-buckle-type steel pipe supports, coupled with unsafe calculation length coefficients, has resulted in frequent safety incidents leading to severe casualties and economic losses. In this paper, the semi-rigidity characteristics of joints were investigated through the field bending test of disc-buckle steel pipe supports. Through analysis of the bending moment–rotation curves obtained from these tests, accurate initial bending stiffness values and a calculation model for semi-rigid joints were established. Numerical simulation and analytical correction method were employed to determine the effective length correction coefficient <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi mathvariant="sans-serif">μ</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></semantics></math></inline-formula> under various erection parameters while accounting for joint semi-rigidity. The findings indicate that the slenderness ratio derived by the revised effective length coefficient is 8.13% greater than the standard value, primarily because current standards fail to adequately consider the constraint effect of the crossbar. The correction coefficient proposed in this paper provides a theoretical foundation for the safe construction of disc-type steel pipe supports, and holds significant value for engineering applications. |
| format | Article |
| id | doaj-art-d2952475668546a2b693a5a5ee058ccd |
| institution | DOAJ |
| issn | 2075-5309 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-d2952475668546a2b693a5a5ee058ccd2025-08-20T03:11:22ZengMDPI AGBuildings2075-53092025-06-011511195510.3390/buildings15111955Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe SupportFankui Zeng0Guoxin Zou1Meng Ji2Jianhua Zhang3School of Civil & Architecture Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Civil & Architecture Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Civil & Architecture Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Civil & Architecture Engineering, Xi’an Technological University, Xi’an 710021, ChinaThe current lack of standardized calculation methods for disc-buckle-type steel pipe supports, coupled with unsafe calculation length coefficients, has resulted in frequent safety incidents leading to severe casualties and economic losses. In this paper, the semi-rigidity characteristics of joints were investigated through the field bending test of disc-buckle steel pipe supports. Through analysis of the bending moment–rotation curves obtained from these tests, accurate initial bending stiffness values and a calculation model for semi-rigid joints were established. Numerical simulation and analytical correction method were employed to determine the effective length correction coefficient <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msub><mrow><mi mathvariant="sans-serif">μ</mi></mrow><mrow><mn>0</mn></mrow></msub></mrow></semantics></math></inline-formula> under various erection parameters while accounting for joint semi-rigidity. The findings indicate that the slenderness ratio derived by the revised effective length coefficient is 8.13% greater than the standard value, primarily because current standards fail to adequately consider the constraint effect of the crossbar. The correction coefficient proposed in this paper provides a theoretical foundation for the safe construction of disc-type steel pipe supports, and holds significant value for engineering applications.https://www.mdpi.com/2075-5309/15/11/1955disc-buckle-type steel pipe supportcalculation length coefficientsemi-rigid jointstable bearing capacity |
| spellingShingle | Fankui Zeng Guoxin Zou Meng Ji Jianhua Zhang Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support Buildings disc-buckle-type steel pipe support calculation length coefficient semi-rigid joint stable bearing capacity |
| title | Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support |
| title_full | Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support |
| title_fullStr | Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support |
| title_full_unstemmed | Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support |
| title_short | Study on Semi-Rigid Joint Performance and Stability Bearing Capacity of Disc-Type Steel Pipe Support |
| title_sort | study on semi rigid joint performance and stability bearing capacity of disc type steel pipe support |
| topic | disc-buckle-type steel pipe support calculation length coefficient semi-rigid joint stable bearing capacity |
| url | https://www.mdpi.com/2075-5309/15/11/1955 |
| work_keys_str_mv | AT fankuizeng studyonsemirigidjointperformanceandstabilitybearingcapacityofdisctypesteelpipesupport AT guoxinzou studyonsemirigidjointperformanceandstabilitybearingcapacityofdisctypesteelpipesupport AT mengji studyonsemirigidjointperformanceandstabilitybearingcapacityofdisctypesteelpipesupport AT jianhuazhang studyonsemirigidjointperformanceandstabilitybearingcapacityofdisctypesteelpipesupport |