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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: 

SP31-05

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: 

SP31-07

Date: 

January 1, 1972

Author(s):

S. Zundelevich and J. Benjamin

Publication:

Symposium Papers

Volume:

31

Abstract:

The theory of probability is used to solve the problem of forecasting the delfection of reinforced concrete beams. Nonhomogeneous Markov Processes are described. The development of a probabilistic method is presented in a manner which can be readily applied. In predicting deflections of reinforced concrete beams, a solution of empirical nature is used. The predictions show good agreement with labortary tests.

DOI:

10.14359/17927


Document: 

SP31-02

Date: 

January 1, 1972

Author(s):

J. Ferry Borges and M. Castanheta

Publication:

Symposium Papers

Volume:

31

Abstract:

A statistical treatment of the problem of combination of different types of loadings involves a suitable definition of each of the loads to be combined. In the idealization adopted each load is assumed constant during given intervals of time, and variable from interval to interval according to an uncorrelated stochastic process. Further, variability from structure to structure and variability in time are assumed to be equivalent. . .The results obtained give a clear understanding on how to perform the combination of loads and on how to choose the load factors. . .

DOI:

10.14359/17922


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


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