Torsional Behavior Numerical Analysis and Torsion Bearing Capacity Calculation of Circular-end Elliptical Concrete-filled Steel Tube(PDF)
《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]
- Issue:
- 2018年03期
- Page:
- 7-15
- Research Field:
- Publishing date:
Info
- Title:
- Torsional Behavior Numerical Analysis and Torsion Bearing Capacity Calculation of Circular-end Elliptical Concrete-filled Steel Tube
- Author(s):
- WANG Jing-feng; YU Zhong-hua; SHEN Qi-han; JIANG Han
- School of Civil and Hydraulic Engineering, Hefei University of Technology
- Keywords:
- circular-end elliptical concrete-filled steel tube; torsional behavior; finite element analysis; force mechanism; torsion bearing capacity
- PACS:
- -
- DOI:
- -
- Abstract:
- In order to explore the calculation method of torsional behavior and torsion bearing capacity of circular-end elliptical concrete-filled steel tube members, the finite element analysis model of circular-end elliptical concrete-filled steel tube members under pure torsion was established by using ABAQUS. In order to solve the constitutive relation of core concrete, a new equivalent method for the constitutive relationship of circular-end elliptical steel tube core concrete was presented. The feasibility of the equivalent method and the accuracy of the numerical analysis model were verified by the existing experimental results. The parameter analysis on the performance of circular-end elliptical concrete-filled steel tube members subjected to pure torsion was carried out. The research parameters included steel strength, concrete strength, steel ratio, longshort axis ratio and section area. The force mechanism of circular-end elliptical concrete-filled steel tube members under pure torsion was revealed. A simplified formula for calculating torsion bearing capacity of circular-end elliptical concrete-filled steel tube members was presented. The research results show that the torsion bearing capacity of members increases with the increase of steel strength, section area and steel ratio, and decreases with the increase of long-short axis ratio. The research results will provide a reference for the design of the circular-end elliptical concrete-filled steel tube members.
Last Update: 2018-05-31