|Table of Contents|

Design Method Research and Reliability Analysis of Concrete-filled Steel Tubular Columns with Inner Steel Under Axial Compression(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2020年06期
Page:
11-20
Research Field:
Publishing date:

Info

Title:
Design Method Research and Reliability Analysis of Concrete-filled Steel Tubular Columns with Inner Steel Under Axial Compression
Author(s):
WANG Wen-da;  LI Xian-jun;  FAN Jia-hao
School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China)
Keywords:
CFST column with inner steel;  axial compressive member;  finite element analysis;  design method;  reliability analysis
PACS:
TU398
DOI:
-
Abstract:
In order to make the concrete-filled steel tubular(CFST)members with inner steel has moment and laws to follow in practical engineering, the numerical model was established by ABAQUS, the reliability of numerical simulation was verified by comparing simulation results with experimental results. Based on the mechanical properties and working mechanism of CFST, the influences of various influencing parameters, such as concrete strength, steel pipe strength, built-in section steel strength, steel ratio of steel pipe and steel ratio of built-in section steel on the bearing capacity of components were analyzed. Based on the formula proposed, the influence of different load effect ratios ψ on the reliability of this type of component was analyzed. Considering the actual engineering parameters, the calculation formula of the strength and bearing capacity of the short columns of CFST with inner steel under axial compression was proposed, and the design method of this kind of component was suggested. Taking the stability coefficient φ as a parameter, the calculation formula of the stability and bearing capacity of the long columns of CFST with inner steel was proposed. The research results show that based on the calculation method proposed, the reliability index of the bearing capacity of this kind of component basically meets the requirements of the unified standard.

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Last Update: 1900-01-01