Tieling Cement Prefabricated House Installation
The installation process of cement prefabricated houses in Tieling mainly includes three key steps: the preparation stage, foundation treatment, and component hoisting and connection. Here is a detailed scientific explanation of the installation process:
1. Preparation Stage: Dual Verification of Materials and Equipment
Before installation, all prefabricated components must undergo strict inspection, with a focus on confirming whether their dimensions, specifications, and strength meet the design standards. In particular, it is necessary to check whether the positions of reserved sleeves, the diameters and quantities of reinforcing bars are consistent with the drawings. For example, the reserved reinforcing bars in the columns must be precisely aligned with the sleeves in the beams and slabs to avoid misalignment during later connections. At the same time, auxiliary materials such as cement mortar and sealant need to be prepared, and the lifting capacity and operating radius of hoisting equipment (such as truck cranes or tower cranes) should be adjusted to ensure that they can cover the hoisting needs of all components. If sleeve grouting connections are used, special grouting materials should be prepared in advance and their fluidity tested.
2. Foundation Treatment: Dual Guarantee of Precision and Stability
The foundation should be selected as either an independent concrete foundation or a strip foundation according to the geological conditions. Before pouring, the dimensions and elevations of the foundation base should be rechecked with a total station, with an error controlled within ±5mm. For example, a two-story villa requires enlarged foundations at the positions of the four corner columns to disperse the upper loads. The foundation surface should be roughened to enhance the bond strength with the prefabricated components, and connection steel plates or anchor bolts should be pre-embedded at key positions to provide a reference for the positioning of subsequent components. During winter construction in Tieling, antifreeze should be added to the concrete and covered with insulation film to prevent frost heave damage.
3. Component Hoisting and Connection: The Core Link of Structural Safety
Hoisting should follow the principle of "bottom-up and main-to-secondary", usually starting from the corner columns and gradually progressing towards the center. During column hoisting, guy ropes should be used for temporary fixation, and the verticality should be adjusted with a laser level, with a deviation not exceeding H/1000 (H is the column height). Beam-slab connections can use high-strength bolt fastening or sleeve grouting processes, among which sleeve grouting should be completed within 40 minutes, and the gaps between components should be kept uniform. Wall gaps should be filled with polyurethane sealant, and 5mm deformation joints should be reserved around window frames to prevent cracking caused by temperature stress. Tieling New Home Cement House Factory once achieved the rapid construction of a two-story villa in 2 hours through modular design. The key technology lies in the high standardization of prefabricated components and the use of dry connection joints, which reduces the amount of on-site wet work.
Installation Precautions: The entire process should be operated by certified welders and grouting workers, and video records should be kept for future reference. After installation, a load-bearing capacity test should be carried out to ensure structural safety before interior decoration can proceed.
