Luzhou Prefabricated Panel House Reinforcement
Reinforcement methods for prefabricated panel houses in Luzhou include section enlargement reinforcement, carbon fiber sheet bonding reinforcement, structural load path modification reinforcement, prefabricated panel replacement, and post-hole-opening reinforcement. The appropriate method should be selected based on actual needs and conditions.
Section Enlargement Reinforcement: This method involves adding a reinforced concrete overlay of no less than 40mm thickness on the surface or bottom of the prefabricated panel to form a rigid floor or roof. Pouring on the panel surface is usually preferred for its relative ease of construction. If special circumstances require pouring an overlay on the panel bottom, the bottom surface must be roughened to enhance the bond between the old and new concrete, and spraying construction should be employed to ensure quality. This method effectively improves the load-bearing capacity and overall stiffness of the prefabricated panel.
Carbon Fiber Sheet Bonding Reinforcement: Structural adhesive is used to bond carbon fiber sheets along the span direction to the tensioned bottom surface of the panel. Carbon fiber sheets are characterized by their lightweight and high strength, adding minimal weight to the original structure and not affecting its appearance while significantly enhancing its load-bearing capacity and stiffness. In Luzhou, there have been relevant carbon fiber reinforcement project cases and technical sharing, providing references and insights for the practical application of this method.
Structural Load Path Modification Reinforcement: Beams and columns are added beneath the prefabricated panel to modify the structural load path, reduce the panel's bending moment, and thereby improve its load-bearing capacity and achieve reinforcement. This method is suitable for situations where the structural load distribution is unreasonable and requires adjustment to enhance structural performance.
Prefabricated Panel Replacement: High-strength, high-performance prefabricated panel materials are selected to replace the original panels, directly improving the overall strength and stability of the house. For connection points with weak links, reinforcement methods such as adding connecting reinforcement and strengthening connection nodes can be employed to ensure a secure connection between the new and old prefabricated panels.
Post-Hole-Opening Reinforcement: When holes need to be opened in the prefabricated panel, internal force analysis and load-bearing capacity verification must be conducted first. Based on the calculation results, an appropriate reinforcement method should be selected to reinforce the hole and ensure the structural safety of the prefabricated panel after hole opening.
