Research and development of materials and components: we have developed a wall system with light insulation decoration function, C35 ~ C50 low energy consumption and high-performance concrete precast components, light gypsum insulation mortar and environmental protection gypsum putty suitable for the decoration system of the inner side of the outer wall and the inner partition wall of precast buildings, and sleeve grouting connection of 500MPa and 600MPa high-strength reinforcement Slurry anchor lap joint and mechanical connection technology, etc.

Since 2010, Shanghai Construction Technology Co., Ltd.

Experimental study on seismic performance of cast concrete structures 02 technical highlights of overcoming difficulties presents sleeve grouting quality detection technology for cast concrete structures.

With the latest architectural scientific achievements, Shanghai Jianke serves the urban and rural construction in Shanghai and the whole country.

Based on years of research and development of precast buildings, Shanghai Jianke has established a technical system covering structure and enclosure system, material parts, testing and quality control, and formed a large number of invention patents and standards.

relevant research results are listed in engineering structures, Journal of civil engineering, Journal of building structures More than 40 papers have been published in domestic and foreign academic journals such as building structure, and the monograph quality control, inspection and evaluation, performance improvement of reinforced joint sleeve grouting has been published.

has integrated its internal advantages, comprehensively carried out research on precast buildings and achieved a series of results.

Sleeve joint test precast frame column test precast shear wall test precast frame structure test drilling injection supplementary grouting technology drilling injection supplementary grouting repair sleeve grouting defects construction method concrete vertical member horizontal joint quality detection technology for the structure of horizontal joint connection of stressed members of precast integral concrete structure New and practical small-diameter high-frequency transducer ultrasonic method and ipsilateral uncoupled ultrasonic method are developed, which can effectively detect the quality of horizontal joints of concrete vertical members, better adapt to the structural characteristics of bottom joints, simple operation and reliable results.

The influence of sleeve grouting defects on the mechanical properties of precast concrete components and structures is studied through experiments, The effectiveness of remediation technologies such as direct supplementary grouting method and broken repair method at the level of joints, components and structures is verified, an enterprise construction method is formed, and a portable intelligent supplementary grouting instrument is developed, which provides key technical support for the evaluation and improvement of mechanical properties of precast concrete structures.

Composite surface roughness evaluation precast component on-site entity detection composite surface roughness detector post cast concrete composite surface defect detection technology for various defects that may exist on various post cast concrete composite surfaces of assembled monolithic concrete structures, a phased array ultrasonic imaging method is developed, which can realize continuous flat measurement and scanning in one side area, Effectively detect holes, voids, floating soil impurities and other defects on the joint surface.

Shanghai Construction Scientific Research Institute has developed four effective sleeve grouting quality detection methods, including embedded sensor method, embedded steel wire drawing method, borehole endoscope method and X-ray digital imaging method, forming a comprehensive range of pre, in-process The complete set of technology for post grouting quality control is of great significance to effectively ensure the sleeve grouting quality of assembled monolithic concrete buildings and promote the healthy development of assembled monolithic concrete buildings.

U Bar Anchor

Representative topics include “Research on key technologies for inspection of assembled monolithic concrete structures” (Science and technology plan project of the Ministry of housing and urban rural development), “Research on inspection technology of assembled monolithic concrete buildings” (Science and technology research project of Shanghai Science and Technology Commission), “Research on inspection technology of high-rise cast concrete structures” (Science and technology research project of Shanghai Science and Technology Commission) “Research on nondestructive testing and health monitoring system for key nodes of precast public buildings” (scientific and technological research project of Shanghai Municipal Commission of science and Technology), “Research on detection and evaluation technology of sleeve grouting and caulking materials of precast concrete structures” (project of Shanghai Municipal Commission of housing and urban rural development), etc.

Laboratory testing of precast defective laminated plates ， field testing of laminated plates ， testing of 200mm thick double-sided laminated shear walls 03 pursuing the transformation of outstanding scientific and technological achievements Shanghai construction technology has undertaken 8 major national, ministerial and municipal scientific research topics related to precast buildings and 5 group scientific research and innovation topics.

It is the only comprehensive scientific research, development and technical service institution in the construction industry in Shanghai.

Evaluation and treatment of sleeve grouting defects in precast concrete structures by embedded sensor method, embedded steel wire drawing method, borehole endoscope method, X-ray digital imaging method.

Published papers and monographs, authorized 15 invention patents, and authorized 12 utility model patents..

Development of structure and enclosure system: the structural system of precast concrete residential buildings and the external enclosure system of precast integral concrete buildings have been developed.

Detection and quality control research: the detection technology of key connecting nodes, components and structures of assembled monolithic concrete buildings has been developed, mainly including embedded sensor method, embedded steel wire drawing method, borehole endoscope method and X-ray digital imaging method for sleeve grouting quality detection, Small diameter high-frequency transducer ultrasonic method and ipsilateral uncoupled ultrasonic method for quality detection of horizontal joints of vertical components, roughness evaluation method and phased array ultrasonic imaging method for surface roughness and construction quality detection of precast components, etc.

Small diameter high-frequency transducer ultrasonic method ipsilateral uncoupled ultrasonic method for detecting the roughness of concrete composite components, a concrete composite surface roughness sounding ruler and a composite surface roughness detector are developed, and an evaluation method for the roughness of the joint surface of precast concrete components is proposed, which can quantitatively evaluate the forming quality of the rough surface of precast components.