This project belongs to the field of ancient building protection and repair technology and new technology development for building energy-saving transformation. The research objects are brick buildings in service in historical buildings in Shanghai City and multi-storey brick buildings built in the 1980s. Combined with the reliability testing and identification of such buildings and typical engineering examples of building energy-saving transformation, a key technological innovation system for testing and identification of brick structures in service historical buildings has been formed. Supported by the Municipal Science and Technology Commission's Science and Technology Research Plan (062512028) and the Science and Technology Innovation Action Plan (08DZ 1203802), the following 5 major innovative technological achievements have been obtained:
① A safety appraisal model and quantitative control indicators based on the actual strength of brick masonry structures in the current state of service historical buildings were established, and a resistance detection device for thick wall brick masonry structures was developed. Supporting results: Authorized 1 utility model patent (ZL200820154561.7), published 5 academic papers in related disciplines, 2 papers were included by EI, and cited 21 times.
② The durability identification and residual service life calculation methods are given that are consistent with the time-varying laws of bricks used in historical buildings in service. Supporting achievements: 1 invention patent (ZL200810201888.x) was authorized, 5 academic papers in related disciplines were published, 4 papers were included by EI, and 17 citations were cited.
③ The concept and method for identifying the applicability of historical buildings in service with the cultural value of protecting buildings as an important influencing factor are proposed. Supporting achievements: Published 1 monograph "Historical Architecture of Yuanyong Hujiang University", published 2 academic papers on related majors in the "Journal of Architecture", and were cited 8 times.
④ Developed rapid testing of thermal performance of walls of historical buildings in service, ground source heat pump testing and solar collector technology. Supporting achievements: 3 invention patents were authorized (ZL200810034837.2;ZL201210026702.8;ZL201010561013.8), 2 utility model patents were authorized (ZL200720198640.3; ZL2009208447.2), and 8 academic papers were published in related disciplines, 6 were included in EI, 2 were included in ISTP, and were cited 5 times.
③ Develop energy-saving renovation technology for sprayed polymer mortar suitable for internal insulation of exterior walls of historical buildings and a method for rapid ultrasonic testing of thermal conductivity of insulation materials. Supporting achievements: 1 invention patent was authorized (ZL200910200252.8), 1 utility model patent was authorized (ZL200920212895.x), 10 academic papers were published in related disciplines, 5 were included in EI, 3 were included in ISTP, and were cited 6 times.
Main technical characteristics:
① Study the existing bearing capacity based on the existing state identification method of brick structures;② Select raw materials for brick structures of historical buildings in service and use the original process to lay brick masonry for testing;③ Study the applicability testing and identification method of historical buildings in service from the perspective of architecture;④ Develop a thermal performance and resistance testing device for thick masonry for direct on-site inspection; ④ Adopt small machinery and external wall internal insulation spraying process, and organically combine ground source heat pump and solar energy collection and energy-saving equipment with the style of historical buildings.
This research has obtained secondary innovation models such as reliability testing and identification of brick structures in service history and new technologies, new methods, new devices, and new perspectives for building energy-saving transformation. It has formed 5 innovative technical research results and obtained 5 authorized invention patents., authorized 4 utility model patents, and published a total of 56 academic papers, of which 29 were included in EI/ISTP and cited 57 times. Expert appraisal and consultation report conclusions show that the overall technology of this research result has reached the international advanced level (see annex). The research results have been technical practice and engineering application in five relevant scientific research and production units. In the past three years, several reliability identification and energy-saving renovation projects of brick structures of historical buildings in service have been completed. The cumulative added output value of the application units has been 127.14 million yuan. The profit is 62.85 million yuan and the new tax revenue is 10.81 million yuan. It has achieved good economic and social benefits, playing a demonstration role in the protection and repair of historical buildings in service and its energy-saving renovation projects.