抄録
The experiment of timber structures often extends to the large deformation area. However, an appropriate measuring method of large deformation is not in existence. We carried out the static loading test to the rebuilt timber truss bridge of the length of 36m. In this test, a three-dimensional measuring system that used wired displacement transducers was developed. The two kinds of vertical displacements obtained from transducers and a surveying instrument by numerical calculation showed almost good agreement.
