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International Concrete Abstracts Portal

Showing 1-5 of 9 Abstracts search results

Document: 

SP310-32

Date: 

March 17, 2017

Author(s):

Rolf Breitenbücher; Günther Meschke; Fanbing Song; Michael Hofmann; Yijian Zhan

Publication:

Symposium Papers

Volume:

31

Abstract:

To investigate the behaviour of precast tunnel lining segments subjected to concentrated loads on a small scale, laboratory tests on concrete prisms under partial-area loading in conjunction with numerical analyses were performed. Various parameters influencing the load-bearing and fracture behaviour of plain concrete (PC) and steel-fibre-reinforced concrete (SFRC) under concentrated loads are considered, including fibre properties (dimension, aspect ratio, tensile strength), fibre dosage and orientation, area ratio and eccentricity of load. The effects of these parameters on the ultimate bearing capacity, stress-displacement behaviour, failure mode and crack characteristics are analysed and discussed. Parallel to the experimental investigations, numerical simulations using a continuum coupled damageplasticity model for triaxially loaded cementitious material were performed. It is shown that the numerical analysis is able to realistically capture the structural behaviour and the crack pattern of partially loaded PC and SFRC specimens.

Document: 

SP31-01

Date: 

January 1, 1972

Author(s):

E. Rosenblueth and L. Esteva

Publication:

Symposium Papers

Volume:

31

Abstract:

A strategy is suggested for the evolution of building codees towards their ideal format; reliability optimization.

DOI:

10.14359/17921

Document: 

SP31-06

Date: 

January 1, 1972

Author(s):

Ernst Basler

Publication:

Symposium Papers

Volume:

31

Abstract:

Structural safety is analyzed by means of a simple model of the design procedure. All potential uncertainties which may affect the safety are classified in 9 groups of errors. The characteristics of three different measures of structural safety are briefly discussed and particular emphasis is given to a new yardstick for safety, the "coefficient of variation of a structural design."

DOI:

10.14359/17926

Document: 

SP31-05

Date: 

January 1, 1972

Author(s):

Jack R. Benjamin and Haresh C. Shah

Publication:

Symposium Papers

Volume:

31

Abstract:

The purpose of this paper is to provide the structural engineer with a simple probabilistic forecast of structural response. The procedure fits within all existing codes and is simple to understand and use.

DOI:

10.14359/17925

Document: 

SP31-04

Date: 

January 1, 1972

Author(s):

C. Allin Cornell

Publication:

Symposium Papers

Volume:

31

Abstract:

This paper presents a number of illustrations of the development of equations and numerical values of coefficients of variations for use in probability-based structural codes. . .Several different functional forms of equations are illustrated, and several different sources of uncertainty are included (material properties, member dimensions, and equation inaccuracies). The results provide characteristic values of these resistances. General conclusions are drawn as to the kinds of information which committees should report and as to what factors must be considered in the evaluation of coefficients of variation as mesaures of uncertainty. . .A two-phrase implementation of probability-based codes is recommended.

DOI:

10.14359/17924

12

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