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Nonlinear Finite Element Analysis of Anchored Blind-Bolted Joints  to Concrete-Filled Steel Tubular Columns

Volume 15, Number 2, February 2019, pp. 676-687
DOI: 10.23940/ijpe.19.02.p32.676687

Yihuan Wanga,b, Zhan Wanga,b, Jianrong Pana,b, and Peng Wanga

aDepartment of Civil Engineering, South China University of Technology, Guangzhou, 510640, China
bState Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510640, China

(Submitted on November 13, 2018; Revised on December 8, 2018; Accepted on January 10, 2019)

Abstract:

A nonlinear finite element analysis (FEA) on rectangular concrete-infilled tubular (CFT) column connections was conducted using the FEA software ABAQUS. In this analysis, loading path and stress distribution of the anchored blind-bolted (ABB) connections to CFT columns were clearly defined; influences of strength grade of bolts, thickness of endplates, vertical interval between bolts, diameter of bolts, and pretension on bolts on the studied connections were determined. The results of FEA indicate that the flush endplate connections of ABB CFT columns are typical semi-rigid connections. The established finite element (FE) model was verified by test results of six anchored blind-bolted flush endplate connections to CFT columns. The test results show that the model can accurately simulate mechanical performance of the ABB connections and is suitable for different forms of ABB connections to CFT columns.


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              aDepartment of Civil Engineering, South China University of Technology, Guangzhou, 510640, China

              bState Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou, 510640, China
               
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