Abstract
The topicality of studied subject is based on inappropriate usage of different materials in wooden structures, since using metal joint in wooden construction leads to reduction of construction working life cycle. In this regard, a study of several options for wooden screw carving was conducted in order to determine the most appropriate one (screw). There are several different types of carving, such as: trapezoidal, triangular, rectangular, etc. The most appropriate ones are trapezoidal and triangular-section threads for wooden screws. The effectiveness of a wooden screw thread was determined from the conditions (capacity) of shear fracture and bearing stress. After analyzing the results of calculations of the specific capacity for shear fracture and bearing stress, it can be concluded that the value of specific bearing capacity for shear fracture is less than the value of bearing stress by 1.3%. Therefore, a further comparison of the trapezoidal thread and the triangular cross-section will proceed from the spalling conditions. It has been found that the most effective thread is a triangular cross-section. Based on the results of calculations, a mathematical model has been established that describes the dependence of the carrying capacity on the screw diameter.
Highlights
IntroductionIn buildings made of wood, one of the elements of heat loss are metal compounds which lead to in energy consumption increase
In buildings made of wood, one of the elements of heat loss are metal compounds which lead to in energy consumption increase.There are several types of joints: pin, glutinous, connections on the mechanical joints
At least a quarter of the cylindrical tree nail must be made in the form of bolts and studs that would compress the connection
Summary
In buildings made of wood, one of the elements of heat loss are metal compounds which lead to in energy consumption increase. No deformation of the walls of wooden buildings which is an obvious consequence of uniform shrinkage; the impossibility of formation of cold bridge (when using pins made of metal are often at the location of the fastener forms a cold bridge reducing the comfort in the building and increases the value of the cost of heating the building); resistance to changes in temperature and humidity parameters of the environment. There is no information on the calculation thread with tree nail in the scientific technical and regulatory Russian literature. In this regard, we conducted a study of several types of carving on wooden screws. Objectives are to investigate and analyze wood screw connections in constructions
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
