T/BJTJ 001-2024 New technology standard for application of hot rolled ribbed high strength steel bars

Scope

Main technical content: In recent years, with the introduction of a series of policies by the state to strengthen the promotion and application of high-strength reinforcing steel, the output and growth rate of high-strength reinforcing steel in China, as well as the proportion of high-strength reinforcing steel in the total annual output of reinforcing steel, have been increasing year by year. Multiple ministries and commissions, including the Ministry of Housing and Urban-Rural Development, have emphasized or stipulated the priority use of high-strength reinforcing steel and the elimination of Grade II and lower strength reinforcing steel. The application of high-strength reinforcing steel can reduce the logistics transportation and construction reinforcing steel processing and connection workload during the construction phase, thereby saving energy and resources such as land, coal, water, and ore, and reducing the emissions of harmful gases and waste residues like CO2 and SO2; during the use phase, it can reduce the energy consumption of building heating, lighting, household appliances, and ventilation, reduce maintenance and operating costs, and achieve reduced project costs, generating significant direct or indirect economic benefits. The promotion and application of high-strength reinforcing steel is in line with China's national policy of sustainable development. It will promote the conservation and rational utilization of energy and fuel, contribute to the scientific development of engineering construction, and play a crucial role in promoting the structural adjustment and transformation and upgrading of the steel industry, eliminating outdated production forces, and implementing sustainable development. The development of HRB635 (E) hot-rolled ribbed high-strength reinforcing steel can further address the problem of "thick beams and heavy columns" in building structures, increase building floor area, enhance structural design flexibility, improve building fu

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