SCE

Dismantling-free bottom formwork rebar truss floor support plate
Dismantling-free bottom formwork rebar truss floor support plate has the technical characteristics of no formwork, less support, no plastering, etc. Compared with the traditional assembled floor plate products, the products are safer, reliable and more energy-saving and environmentally friendly, which saves building materials as a whole and reduces the overall cost. Moreover, this product, with a high degree of automation production, is more convenient for construction and a new type of building material that truly meets the development requirements of green buildings. At present, the market application area in Chongqing is more than one million square meters.
The automatic production line of YJ board independently developed by the group adopts advanced modular technology and integrates advanced achievements in the field of industry and information technology, which enables automatic feeding, automatic assembly and automatic welding. The daily production capacity of a single production line can reach 5,000 square meters and the production efficiency is 5-10 times that of the traditional floor plate production line, which truly reflects the advantages of intelligent manufacturing technology.
Self-developed encased U-shaped steel-concrete composite beam
The self-developed encased U-shaped steel-concrete composite beam (referred to as U beam) is a T-shaped section composite beam composed of a wing panel and a U-shaped steel web filled with concrete through different shear connectors, which gives full play to the advantages of concrete compression resistance and steel tension resistance and makes up for their respective defects. Compared with the concrete beam, the U beam has high bearing capacity, good ductility and anti-seismic property. At the same time, the encased steel can be used as a formwork, so, no formwork is required on site, and the construction period is short. Compared with the H-shaped steel beam, the internal concrete provides support for the encased U-shaped steel to improve the local buckling performance of the encased steel, thereby enhancing the integrity, bearing capacity and deformation capacity of the member. At the same time, the web of the U-beam has a rectangular section, which avoids the obvious cold and hot bridge of the H-shaped steel composite beam and the need for secondary decoration, and the overall cost is lower.
The group independently developed a supporting intelligent production line for U-shaped steel, which enables the U-shaped steel to be formed at one time, greatly reducing the production cost, and the annual production capacity can reach 100,000 tons.
Fiber reinforced calcium silicate board
Fiber reinforced calcium silicate board and fiber cement board are green, energy-saving, environmentally friendly, fireproof, moisture-proof new building wall material made of wood fiber, Portland cement, quartz sand, auxiliary materials and other substances, which are accurately proportioned and prepared by computers and processed by automatic processes such as flow slurry molding, pressurization and pressurized curing.
The products in this system go through 12 processes, from raw material treatment, pulping to edging and testing, all of which are fully automated on the assembly lines, with a production capacity of 20 million square meters.
The material has the following performance advantages: environmental protection, fire protection, water and moisture resistance, thermal insulation, corrosion prevention, moth resistance, sound absorption, good shock resistance, light weight, high strength, good weather resistance and convenient construction.
Intelligent robot for curtain wall installation
The project of intelligent robot for curtain wall installation is a special key project of technological innovation and application development in Chongqing. It is led by Yujian Industry Group Co., Ltd. and participated by Chongqing University of Posts and Telecommunications, Chongqing Institute of Modern Construction Industry Development and Chongqing Construction Information Center for joint research.
This project is mainly aimed at the application of intelligent installation scenarios of different materials and different types of curtain walls. Currently, through phased research, it has the following functions: ① Independently identifying more than 5 types of curtain wall panels; ② Have the ability of independent identification of tension and compression; ③ Realizing the visual perception interaction function of curtain wall robot; ④ Having the function of intelligent sensing positioning.
Through the research and development of the project, the following installation functions are achieved: ① diversification of installation scenarios; ② convenient and flexible operation; ③ diversification of construction sites; Through the realization of the above functions, the following advantages are achieved: ① The construction is safer; ② The installation is more efficient; ③ The positioning is more accurate.

Case presentation

Introduction to the Case of Guangyangwan Shanhu Primary School and Middle School: Guangyangwan Shanhu Primary School covers an area of about 25.5 mu, with an enrollment scale of 24 classes and a total construction area of about 33,600 square meters; The middle school project covers an area of about 95.5 mu, with an enrollment scale of 60 classes and a total construction area of about 99,900 square meters; The project is located in the core area of the city, surrounded by land to be developed and built residential buildings and there is a large area of urban green space between the two plots. Due to large population, tight construction schedule and high quality standards, high requirements were put forward for the comprehensive control and coordination of quality, safety, construction period, and cost during the construction process. As the carrier of innovative technologies in the construction industry, BIM technology, combined with advanced technologies such as "big data, Internet, 5G, AI technology, AR/VR, IoT, cloud computing and cloud collaboration", will be used to guide this project to achieve the whole-process smart construction and smart decision-making. BIM collaboration platform is built and BIM technology is applied to effectively inspect, coordinate and optimize each stage of the project so as to improve project quality, ensure construction period, control costs, and provide technical support and solutions for project construction from the aspects of economy, rationality, and feasibility. The on-site monitoring data, tower crane data, access control system, personnel management system, dust monitoring system, etc. are integrated into the smart construction site platform of the project to realize the dynamic integration of BIM + smart construction site and complete dynamic real-time management of on-site digitalized construction site through the BIM smart construction site platform. In standard classrooms and dormitories, intelligent equipment such as ribbon board installation robot and indoor spraying robot are used to assist construction, improving building efficiency, reducing costs and ensuring construction quality.

Introduction of Yangtze River Ecological Civilization Cadre Academy: The Yangtze River Ecological Civilization Cadre Academy has a total construction area of 120,500 square meters and consists of three parts: area A (administrative office and exhibition), area B (comprehensive teaching and culture and sports) and area C (dormitory and dining hall), with a total of 38 single buildings, built according to the situation of the mountain. The entire process of this project uses BIM technology, and the benefits of some intelligent construction applications are as follows.

1. The project reduced drawing errors through BIM model creation and collision detection, etc., directly saving more than 10 days of construction time.

2. Through the platform-based collaborative design management, the project greatly improved the effectiveness of project communication and reduced the management and control costs and labor costs of the project.

3. BIM technology is used to simulate the layout of temporary facilities on the site, earthwork deduction, and flow construction simulation of the project, so that the layout can be quickly carried out during construction, indirectly saving more than 10 days of construction time.

4. During the implementation of the project, three-dimensional disclosure was carried out through various construction process simulations and complex node process simulations, which improved the construction implementation efficiency and quality control.

5. BIM technology was used in this project to design the comprehensive layout of pipeline-intensive areas, and to detect collisions and conflicts at the construction site in advance.

6. Through BIM+ assembly design, the efficiency was increased by more than two times, saving more than 20 days in the deepening design cycle.

7. Digital guiding rule and other hand-held intelligent measuring equipment were used to carry out the actual measurement work, improving the accuracy of the measurement and ensure the authenticity and effectiveness of measurement data. Intelligent construction elevator was installed to monitor and warn its operation status in real time to ensure the safe operation of equipment. The building cleaning robot is introduced to clean the indoor and outdoor flat ground of the project, so as to reduce the labor input and control the dust on the site.