THE EFFECT OF THE RESISTANCE SPOT WELDING CURRENT ON WELD QUALITY AND JOINT STRENGTH

Abstract

The paper provides an innovative – simplified and economical – method for constructing a dome-shaped roof that has become quite an urgent issue due to the development in the field of construction as well as large-scale ongoing construction of churches, monastery buildings, necropolis and other domed buildings over the last years in recent years in Georgia and other countries. With respect to construction, as compared with straight-line roofing concrete and framework consumption for constructing a dome is less by approximately 25÷30%. Besides, dome-shaped roofing provides a great number of opportunities to make various architectural solutions as well as enables to maintain the architectural traditions established over the centuries. However, construction of a monolithic dome technologically is quite a complex and timeconsuming process that in the first place is explained by the fact that an appropriate mold is necessary to create before. It describes a completely innovative construction of a molding system of the dome of 12 m in diameter with thin-shielded molds in levels and with an original solution of connection and fixation of the curved edges of the cathedral the second in size in Georgia on Mount Makhata in Tbilisi being under construction. As a result, along with significant saving of materials an unmolding process of the dome after it has been composed and concreted has been extremely simplified. It has been found out that by thinshielded molds it is possible to compose separate load-bearing elements of various complexity and configuration included in the molding system. Also, the process of joining in thickened blocks of the abovementioned elements as well as their mounting and firm fixation has been simplified. It should be noted as well unlimited possibilities of increasing extremely the features of their toughness by adding the edges of simple hardness. And what is more important, use of standard materials and molding devices significantly reduces labor and material consumption connected with formation of molds.