As a specialized device requiring high security and protection, the installation of single-leaf stainless steel waterproof vault (cultural relics vault) doors necessitates comprehensive consideration of multiple dimensions, including material strength, structural stability, connection methods, and waterproofing, to ensure long-term stable operation and the fulfillment of core functions such as waterproofing, anti-theft, and fireproofing.
The wall material must possess sufficient strength and durability. Single-leaf stainless steel waterproof vault (cultural relics vault) doors are typically used in environments such as cultural relic warehouses, vaults, and flood control facilities. Given the significant weight of the door and its need to withstand external impacts or water pressure, the wall must be constructed using reinforced concrete, solid brickwork, or high-strength steel structures. This ensures that the door does not crack or deform under repeated opening and closing or external pressure. For brickwork walls, solid bricks of MU10 or higher should be used, with mortar strength not less than M7.5 to prevent the door frame from becoming unstable due to loose wall material.
The wall structure must possess overall stability. The connection between the door frame and the wall is a crucial aspect of installation. If the wall has hollow areas, cracks, or is at risk of settlement, it will lead to uneven stress on the door frame, affecting the door's sealing and security performance. Before installation, a structural inspection of the wall is necessary to ensure there is no structural damage. For newly constructed walls, a door opening must be pre-drilled, and structural columns and ring beams must be installed to enhance the rigidity of the surrounding structure. For existing walls, if there is localized damage, reinforcement treatment is required first, such as using carbon fiber reinforcement or adding steel structural supports.
The door frame fixing method must be scientifically sound and reasonable. Single-leaf stainless steel waterproof vault (cultural relics vault) doors typically connect their frames to the wall using chemical anchors, expansion bolts, or welding. Chemical anchors are suitable for concrete walls. Their anchoring depth needs to be determined based on the door frame dimensions and load calculations, generally not less than 10 times the anchor diameter. Expansion bolts are suitable for masonry walls, but must avoid brick joints to ensure effective engagement between the bolt and the brickwork. Welding is mostly used for steel structure walls; the weld quality must meet GB50205 standards to avoid defects such as incomplete welds and porosity. The contact surfaces between the door frame and the wall must be filled with high-strength structural adhesive or cement mortar to eliminate gaps and prevent door wobbling.
Waterproofing is a core requirement of wall structure requirements. The waterproofing performance of a single-leaf stainless steel waterproof vault (cultural relics vault) door depends not only on the door's own sealing design but also on the coordinated waterproofing of the wall and door frame. The joint between the door frame and the wall must be filled with waterproof sealant. The sealant should possess weather resistance, elasticity, and adhesion, such as polysulfide sealant or silicone sealant. For underground warehouses or flood-prone areas, waterproof membrane or water-stop steel plates should be added at the joints to form multiple lines of waterproofing. A concrete water-retaining sill must be installed at the bottom of the wall, with a height of no less than 200mm and a width consistent with the door frame, to prevent ground water from seeping into the door.
The dimensions of the pre-reserved opening in the wall must be precisely controlled. The door opening size should be slightly larger than the outer diameter of the door frame to allow for installation and adjustment space. However, excessive gaps can easily lead to door frame deformation, while insufficient gaps will affect installation efficiency. Generally, the width and height deviation of the door opening should not exceed ±5mm, the diagonal deviation should not exceed ±10mm, the verticality deviation should not exceed 3mm/2m, and the flatness deviation should not exceed 5mm/2m, ensuring a tight fit between the door frame and the wall after installation.
The wall must meet additional requirements for fire prevention and burglarproofing. If the warehouse door requires fire resistance, the wall should be made of fire-resistant materials or have an additional fire-resistant layer, such as fire-resistant gypsum board or fire-resistant rock wool, to ensure that the fire resistance rating of the wall is not lower than that of the door. For scenarios with high security requirements, the wall and door should form an integrated protective structure, such as using reinforced concrete to encase the door frame or adding anti-theft steel plates to prevent bypassing the door by breaking through the wall.
Post-installation testing and acceptance are essential. After installation, a comprehensive inspection is required, including the verticality, horizontality, sealing, and opening flexibility of the door frame. A water spray test should be conducted to verify waterproofing performance; after 30 minutes of continuous water spraying, there should be no leakage at the joint between the door frame and the wall. Professional tools should be used to test the door's impact resistance to ensure it meets design standards. Only after passing acceptance can the door be put into use, and regular maintenance and inspections are necessary to ensure long-term safe operation.
