Low-Cost 3D Imaging and Measurement Techniques for Documentation of Meram Masonry Arch Bridge in Turkey

Abstract

A lot of historical masonry arch bridges that have different architect and ages had been built in Turkey. Some of them have still been used, the others have been broken down due to natural or human effects. These bridges have complex shapes and difficult conditions to measuring. The close-range photogrammetry and photogrammetric dense point cloud methods enable to creating 3D model of a great number of historical bridges with fast, low-cost and high accuracy. The Meram Bridge is inside the Konya Metropolitan Municipality. It has still serve to public usage, today. It's dimensions are 29.5m long and 4.5m width, and has five arches. It has been restored many times so far. Though it has not been known when it was built, but it is probably belong to period of Seljuk Empire and Karamannid state during 13-14 century (BC). In this study, historical Meram bridges have been measured and 3D model was created. After given some literature review about the masonry arch bridges in Turkey, the 3D model of Meram Bridge was created. Its dimensions were given on the orthophoto images.

Quantifying the effect of geometric uncertainty on the structural behaviour of arches developed from direct measurement and Structure-from-Motion (SfM) photogrammetry

“…Time-of-flight scanners, which are more relevant to applications of masonry structures, measure distance by timing the emission of a pulse of laser energy to the detection of the reflected signal [25]. Both SfM photogrammetry and TLS have been employed with success to accurately and rapidly obtain structural surveying of complex in geometry masonry structures [26][27][28][29].…”