DISPLACEMENT ESTIMATION OF A RC BEAM TEST BASED ON TSS ALGORITHM

Graça Almeida
Universidade Nova de Lisboa, Instituto Superior de Engenharia de Lisboa
Portugal

Hugo Biscaia
Universidade Nova de Lisboa
Portugal

Fernando Melicio
Instituto Superior de Engenharia de Lisboa
Portugal

Carlos Chastre
Universidade Nova de Lisboa
Portugal

José Fonseca
Universidade Nova de Lisboa
Portugal

Abstract:
The traditional methodology used in civil engineering measurements requires a lot of equipment and a very complex procedure especially if the number of target points increase. Since the beginning of the current century, several studies have been conducted in the area of photogrametry using digital image correlation associated with block motion algorithms to estimate displacements in reinforced concrete (RC) beams during a load test. Using image processing techniques it is possible to measure the whole area of interest and not only a few points of the tests materials. In this paper, block matching algorithms are used in order to compare the results from photogrametry techniques and the data obtained with linear voltage displacement transducer (LVDT) sensors during the load tests of RC beams which are very common to find in civil engineering laboratories.