Open AccessCauses of defects in timber arches of the buildings covering and methods of strengthening
Author(s) -
Anatoliy Naichuk
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/896/1/012042
Subject(s) - arch , structural engineering , span (engineering) , rod , arch bridge , forensic engineering , engineering , materials science , geotechnical engineering , medicine , alternative medicine , pathology
The results of the survey of covering of large-span public buildings located on the territory of the Republic of Belarus, which are in exploitation from 10 to 30 years. The bearing structures of the covering were timber glued arches with spans from 48 m to 60 m. the Main defects were both through and deep cracks that appeared in the timber of the arches during exploitation. To restore the performance of timber arches with defects in the form of cracks, methods of strengthening are proposed. The effectiveness of using glued steel rods for strengthening arches with cracks was tested experimentally. For this purpose, two prototypes of semi-arches made of glued timber for a span of 26.9 m were tested: one semi-arch of a solid cross-section bxh = 100 × 670 mm; the second semi-arch with a crack on the neutral axis, reinforced with glued steel rods. As a result of tests, the ultimate load of a semi-arch with a solid cross-section is 2.4 times greater than the calculated value; and a semi – arch with a crack through the entire length is 1.8 times greater.