Construction dispute! Can the spacing of aluminum formwork reinforcement exceed 1 meter?
With the continuous development of the construction industry, aluminum formwork construction, as an advanced construction technology, has been widely used in modern construction projects. This technology, with its excellent performance and reliable construction quality, has become the preferred solution for many projects. This article will systematically introduce the core technical points, construction process, and quality control standards of aluminum formwork construction, providing practical reference guidance for practitioners.
I. Construction of Column and Wall Formwork System 1.1 Reinforcement Methods and Spacing Control Reinforcing column and wall formwork is a key aspect of ensuring construction quality. When using tie rods for reinforcement, the reinforcement spacing should be controlled at approximately 1000 mm. This spacing ensures the stability of the formwork and effectively prevents bulging during concrete pouring.
1.2 Installation Sequence and Elevation Control During construction, the installation sequence should follow "columns and walls first, then beams and slabs." After completing the column and wall formwork installation, the beam and slab formwork should be erected, and finally, elevation adjustments should be made using top supports. This sequence ensures the stability and dimensional accuracy of the overall structure. The standard component, a special PVC sleeve that also serves as an internal brace, is an important part of the reinforcement system. The tie rods must be tightened securely to ensure that the formwork system does not shift during concrete pouring.
1.3 Detailed Node Treatment and Corner Reinforcement: Special reinforcement treatment is required for the external corners of columns and walls to prevent corner deformation or grout leakage. Bottom Gap Treatment: When poor floor flatness results in large gaps at the bottom of the formwork, wooden blocks or plywood should be used to seal the bottom gaps to prevent concrete leakage and ensure the quality of the finished product.
Expansion Joint Treatment: Double-wall pre-reserved holes should be provided at expansion joint locations to facilitate the installation and tightening of bolts during formwork reinforcement. Pre-reserved openings in the channel steel should be sealed using wooden formwork. Internal Corner Installation: Internal corner formwork at the intersection of beams/slabs and columns/walls should be installed simultaneously with the wall/column formwork to ensure a smooth and tight joint.
II. Beam/Slab Formwork System Construction 2.1 Characteristics of the Support System The beam/slab formwork support system adopts an early-stripping formwork system. Its core feature is that all uprights are not interconnected, fully utilizing the rigidity of the column/wall formwork to ensure the overall stability of the frame. Diagonal bracing is used for additional reinforcement of the columns and walls to further enhance the overall integrity of the system.
2.2 Removal Principles: Formwork at the support points of the uprights can only be removed after the concrete has reached the specified strength, while the support point formwork itself remains in place. This approach ensures structural safety and improves the turnover efficiency of the formwork. The use of specialized formwork connectors ensures reliable connections between components, and the linear formwork should achieve a flat and straight finish after installation.
2.3 Pre-reserved Openings and Special Areas: Construction openings for material transfer need to be reserved during construction to facilitate material transportation in subsequent processes. Inspection and acceptance should be carried out after the top support formwork for pre-reserved openings is completed. Special areas such as air conditioning panels should use fully enclosed formwork for concrete pouring to ensure molding quality and functionality.
III. Concrete Forming Quality Control
3.1 Exterior Wall Forming Quality The forming quality of exterior wall concrete directly affects the building's appearance and waterproofing performance. Exterior walls constructed using aluminum formwork should have a smooth, flat surface, free of obvious defects, and with a uniform color.
3.2 Interior Wall Forming Quality The quality of interior wall concrete forming also needs to be strictly controlled. The wall surface should be vertical and flat, and the inside and outside corners should be square to create good base conditions for subsequent decoration projects.
IV. Standardized Management of Construction Site
4.1 Signage and Publicity: A signboard wall should be set up at the construction site to clearly display basic project information. Safety and civilized construction publicity boards and process/method publicity boards are important components of site management, effectively enhancing the quality and safety awareness of workers.
4.2 Sample Display Area: The process/method sample display area is an important carrier for technical briefings and quality control. Physical samples visually demonstrate construction standards and process requirements, facilitating understanding and implementation by workers.
4.3 Civilized Construction Facilities: The configuration of automatic washing facilities reflects the concept of green construction and effectively controls dust pollution at the construction site. Scaffolding erection should meet specifications to ensure construction safety. The use of high stools for finished steel bars protects the finished steel bars from deformation caused by trampling. Handcarts and other tools should be neatly arranged to maintain a clean and orderly site.