|Table of Contents|

Calculation method of ultimate bearing capacity for plain concrete column(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2015年02期
Page:
22-31
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Calculation method of ultimate bearing capacity for plain concrete column
Author(s):
LIN Shang-shun12 CHEN Bao-chun2
1. School of Civil Engineering, Fujian University of Technology, Fuzhou 350118, Fujian, China; 2. School of Civil Engineering, Fuzhou University, Fuzhou 350116, Fujian, China
Keywords:
bridge engineering plain concrete column ultimate bearing capacity slenderness eccentricity
PACS:
U448.22
DOI:
-
Abstract:
The tests of ultimate bearing capacity for 19 plain concrete columns were carried out. The reasonable scopes of slenderness and eccentricity of plain concrete columns were proposed. The bearing capacities of test columns were calculated by nonlinear finite element method. A calculation method of ultimate bearing capacity for plain concrete column was presented by theoretical analysis and regression of test data. Calculation result shows that when the slendernesses of test columns are higher than 15 and the eccentricities are 0.3, their failure modes are section tensile failure, which can not play full material performance of compression. When the slendernesses are not higher than 15 and the eccentricities are not higher than 0.3, their failure modes are section compression failure. The mean ratio of calculated values by the finite element method to test values is 0.995, the variance is 0.001 8, so the calculated value fits well with test value, and the finite element method can be used for the parameter analysis of plain concrete column. Based on considering the coupling influence of slenderness and eccentricity on bearing capacity, in the proposed calculation method of ultimate bearing capacity, the mean ratio of calculated values by the proposed method and the finite element method is 0.976, the variance is 0.003, which indicates that the proposed method has high precision and high safety. 2 tabs, 17 figs, 20 refs.

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Last Update: 2015-04-30