Reinforcement Design Drawing for Prefabricated Panel Houses

Currently, there are no directly available reinforcement design drawings for prefabricated panel houses, but you can refer to the following two commonly used reinforcement methods in rural areas for design:

Reinforcement Using I-Beams as Crossbeams This method enhances the overall stability of the house by adding a steel structure main frame. During specific operations, it is necessary to select I-beams of appropriate specifications based on the length of the prefabricated panels and the room span, such as 20-type steel. Taking a common 4-meter-long prefabricated panel in rural areas and a room wall-to-wall distance of 3.75 meters as an example, three I-beams can be placed parallel below the prefabricated panels as crossbeams, with the steel and the prefabricated panels forming a cross-shaped intersection to create a horizontal support system. At the same time, I-beam columns are added at both ends of the room, and the bottoms of the columns are fixed to the load-bearing structure of the wall through chemical bolts or welding to ensure that the columns and crossbeams form a stable frame structure. The density of the steel should be adjusted according to the load requirements of the house. If the span of the prefabricated panels is large or the load-bearing requirements are high, the amount of steel can be appropriately increased or larger-specification profiles can be selected. This method significantly enhances the bending and shear resistance of the prefabricated panels by dispersing their stress points, and is particularly suitable for prefabricated panel houses with large spans and limited wall load-bearing capacity.

Adding a Layer of Concrete on Top of the Prefabricated Panels for Reinforcement This method improves the structural strength by increasing the thickness and integrity of the floor slab, but the walls need to be reinforced simultaneously. The specific steps are as follows: First, remove some of the prefabricated panels (such as in the central area of the room), and add crossbeams and vertical beams at the removal positions to form a cross-shaped beam structure as the support base for the newly added concrete layer; then lay a steel reinforcement mesh on the surface of the original prefabricated panels and tie it to the reinforcement of the newly added beams; finally, pour concrete with a strength of C25 or above to form a new floor slab layer with a thickness of not less than 8 centimeters. The newly added concrete layer needs to be reliably connected to the original prefabricated panels through planted rebars or chemical anchors to ensure that they work together under load. It is important to note that if the original house is a column-free brick wall structure, the walls may not be able to bear the newly added load due to long-term aging. In this case, it is necessary to add structural columns at the corners of the walls or in the middle of long walls, and connect the structural columns to the floor slab through ring beams to form a complete load-bearing system, reduce the vertical pressure of the floor slab on the walls, and avoid the risk of wall cracking or collapse.