The Research Of New Steel Bar Connector

With the development of today’s society, human housing requirements from the past cover wind, rain, living rose to ecological energy conservation, Habitat height of environmental protection. China must speed up the process of modernization of housing industry to meet market requirements, the construction of a building to meet the needs of people’s lives, and reflect the housing personalized. Housing industry modernization level of the main criteria from two aspects:one is the traditional housing construction methods need to be changed to improve the level of industrialized production and on-site assembly, site construction work volume to minimize and avoid; industrialization production, on-site prefabricated assembly, interior decoration and the use of prefabricated assembly. The housing industry focus on the industrialization of the housing. In Western developed countries, the housing industry has formed a standardization, industrialization, and has gone through from lower to higher by domestic manufacturers system, the development of the whole residential sector, the residential parts of the whole society, a common process. Residential industrialized universal system has the following characteristics:1.according to the parts, components, standards of specialization, industrial production, mechanization and automation of the construction industry production, reducing the cost of the use of human labor, thus raising labor productivity, also reduces the building production the cost;2. parts, components in the factory precast production with reasonable logistics and transport, on-site to achieve the combination can be installed, reducing labor costs, saving construction time, shorten the construction period;3.The number of housing as a final product of the construction industry, involved in the development process of the industrialization of the entire housing industry parts, components, installation equipment, and other more complex types. This makes even parts, component standardization, industrial production, it will not cause the monotony of similar. Designers can take advantage of a wide variety of parts, components, combinations of residential products to meet the owners needs, personalized to meet market demand and the construction industry. Evaluate the performance of a residential main reference comfort, safety, durability, economy and other aspects.Prefabricated concrete structural engineering instance, due to the structural integrity and seismic capacity of poor in the earthquake had damaged or even collapse, such as the famous Ronan Point progressive collapse, greatly influenced the fabricated concrete structures in the construction industry of the application. Prefabricated concrete structures is an important means of the housing industry, in which the prefabricated structural system of concrete structures, the joints between the precast structural integrity, load conduction, seismic energy consumption plays an important role in especially the connection of the bearing components.Prefabricated concrete structures is an important means of the housing industry,in which the prefabricated structural system of conerete structures,the joints between the preeast structural integrity,load conduction,seismic energy consumption poays an important role in especially the connection of the bearing components.Therefore,in the construction of the housing industry topromote the applcation of prefabricated concrete structures,designselection and construction of proper connections essential to prefabricated concrete structure.According to the national industry technical standards《Technical specification for mechanical splicing of steel reinforcing bars》JGJ107-2010)The provisions of section4.0.3,paragraph2,Reinforced joints are advised to avoid the requirements for scismic framework of the beam end,,column stirrups encryption District.Joints of Class Ⅱ or Class Ⅰ connector can not be avoided,should be used,and the percentage of joints should not be greater than50%.Since the assembly of monolithic concrete structure split the design is difficult to meet the above requirements,therefore,whether the technical breakthrough in the national industr technical standards,as the key technical problems that promote the use of prefabricated soncrete strctures in S henYang.The core technology of prefabricated concrete structure reinforced column-colunm conneections,connection technology is the introduction of Japanese steel casing connection technology.Due to ehe high cost of casing connection,a direct impact on the cost of the prefabricated concrete structures,the promotion of prefabricated concrete structures in Shenyang,,and create favorable conditions for promoting prefabrieated concrete structure in the practical application of the Shenyang region.Project through the form of scismic performance of this new column-column connections technical indicators,and lay the foundation for the promotion of this new practical and economical columical column-column connections in the form of prefabricated concrete structure,to solve the problems of prefabrieated concrete the strcture of the high cost of technical problems.