Pedreschi, Remo Francesco

2019-02-15T14:16:17Z

2019-02-15T14:16:17Z

1983

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.

http://hdl.handle.net/1842/33500

The University of Edinburgh

Annexe Thesis Digitisation Project 2019 Block 22

Study of the behaviour of post-tensioned brickwork beams

Thesis or Dissertation

Doctoral

PhD Doctor of Philosophy