Cyclic Tests of Joints of Glued Wooden Structures

Abstract

The use of large-span structures made of glued wood in countries with large timber reserves in Finland, Sweden, Norway, Russia, the USA and Canada has shown that this can be quite interesting and expressive from the architectural position of the building. Sports facilities, sports and sports facilities, sports facilities, sports and cultural facilities. The practice of building bridges made of glued wood in these countries shows that they have been in operation for decades without additional operating costs. Glued wood in modern conditions, when productive flame retardants are used that protect it from fire, antiseptics from possible decay expand the scope of such structures. One of the important obstacles to the limiting applications of large-span glued wooden structures is the complexity of the solution nodes. Bearing structures experience difficulties when exposed to static and cyclic loads. Cyclic loads can be caused by wind loads, production equipment, traffic, and seismic processes. Reinforcement in wood, reinforcement and reinforcement under load. Wood and metal are resistant to cyclic loads. Studies will be conducted at the border of the elements to be glued. This article presents the results of tests for the effects of static and cyclic loads on reinforcement from a 14 mm reinforcing bar of class A5 on FRF-50T along natural-sized glued wood fibers. Certain coefficients of the endurance of the compound when exposed to cyclic loads with two load asymmetry coefficients p = 0.5 and p = 0.2.

Genetic diversity and differentiation among populations of the pedunculate oak (Quercus robur) at the eastern margin of its range based on a new set of 95 SNP loci

“…At least two main reasons may be responsible for the absence of an obvious relation of genetic diversity and pedunculate oak population sizes. The reduction in the area of populations became significant only in the last millennium due to the increasing economic development of the territory (Kozharinov and Borisov 2012;Aruova et al 2020). A study of historical data showed that relatively abundant broad-leaved forests existed in the east section of the Russian Plain even until the end of the eighteenth century (Gorchakovsky 1968).…”

Modeling the effect of skidded timber bunches on forest soil compaction

“…27 Thus, the obtained data on compaction and recommendations on forest transportation can be applied in simulating the design of an innovative skidder, which allows for increasing the productivity of the skidding system. 28,29 However, the question of whether these wood covers provide sufficient protection in all situations is disputable. Another argument to consider is the displacement of nutrients in forest plantations, since all organic matter usually spread throughout the plantation is now concentrated on the skidding trails.…”

“…27 Thus, the obtained data on compaction and recommendations on forest transportation can be applied in simulating the design of an innovative skidder, which allows for increasing the productivity of the skidding system. 28,29…”

Rotational Stiffness and Carrying Capacity of Timber Frame Corners with Dowel Type Connections

“…Joints of wooden frame elements can be addressed in several ways. One can use glued joints [ 30 , 31 , 32 ], for example, by means of glued steel bars. Another possibility is to form a frame connection from a post, which is arranged in a V-shape [ 33 ].…”