SIGLELD:D48252/84 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Pedreschi, R.F.

English

This thesis presents the results of a study into the behaviour
of post-tensioned brickwork beams. A total of 51 full-scale beams
were tested. The following variables were considered:

(i) brick strength,

(ii) mortar grade,

(iii) steel area and prestress force,

(iv) shear span/effective depth ratio.

The effect of these variables on the deflection, cracking and
ultimate load were studied. A comprehensive series of small
specimen tests were also undertaken to determine the material
properties of the brickwork. A computer programme was developed
to predict the flexural behaviour of the beams, using the non-linear
stress/strain relationship of brickwork obtained from the small
specimen tests and taking tension-stiffening into account. The
theoretical method was then compared with the experimental results.
An expression for predicting the average crack width in the beams
was also developed.

A limited investigation into the shear strength of post-tensioned
brickwork beams was carried out, the variables studied being the
shear span/effective depth ratio, % of steel and the influence of
shear reinforcement. It is shown that the plastic method for
predicting the shear strength of prestressed concrete beams can be
applied to prestressed brickwork beams

Pedreschi, Remo Francesco

Edinburgh Research Archive

A study of the behaviour of post-tensioned brickwork beams

This thesis presents the results of a study into the behaviour
of post- tensioned brickwork beams. A total of 51 full -scale beams
were tested. The following variables were considered:

(i) brick strength,
(ii) mortar grade,
(iii) steel area and prestress force,
(iv) shear span /effective depth ratio.

The effect of these variables on the deflection, cracking and
ultimate load were studied. A comprehensive series of small
specimen tests were also undertaken to determine the material
properties of the brickwork. A computer programme was developed
to predict the flexural behaviour of the beams, using the non -linear
stress /strain relationship of brickwork obtained from the small
specimen tests and taking tension -stiffening into account. The
theoretical method was then compared with the experimental results.
An expression for predicting the average crack width in the beams
was also developed.

A limited investigation into the shear strength of post -tensioned
brickwork beams was carried out, the variables studied being the
shear span /effective depth ratio, % of steel and the influence of
shear reinforcement. It is shown that the plastic method for
predicting the shear strength of prestressed concrete beams can be
applied to prestressed brickwork beams

Study of the behaviour of post-tensioned brickwork beams

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A study of the behaviour of post-tensioned brickwork beams.

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