Joint at junction of FPS external wall panel and steel column

Abstract

The utility model provides a node at the junction of an FPS external wall panel and a steel column, the external wall panel is a steel skeleton light wall panel, the node is formed at the junction when meeting a rectangular steel column, and four internal corners are formed between the rectangular steel column and the external wall panel; a polyurethane foaming agent is adopted to fill gaps among the joints, the external wall panels and the rectangular steel columns to form joints, gypsum mortar is embedded in the gaps, facing the indoor side, of the joints, and a weather-proof silicone sealant is embedded in the gaps, facing the outdoor side, of the joints; a fireproof coating is arranged outside the rectangular steel column, a layer of steel wire mesh is coated outside the fireproof coating, and the steel wire mesh is connected with the plugging structure; alkali-resistant glass fiber gridding cloth is fully laid on the side, facing the outdoor, of the rectangular steel column and the wall face of the outer wall board, alkali-resistant glass fiber gridding cloth is fully laid on the side, facing the indoor, of the rectangular steel column, the side, facing the internal corner, of the rectangular steel column extends towards the wall face of the outer wall board along the internal corner, and a lap joint section which is in lap joint with the wall face of the outer wall board is formed. The anti-cracking and anti-water-seepage floor is good in coating effect and capable of effectively preventing cracking and water seepage.

Description

Technical Field

[0001] This utility model relates to the field of construction, and more specifically to a joint between an FPS exterior wall panel and a steel column. Background Technology

[0002] Lightweight steel frame wall panels (hereinafter referred to as "FPS wall panels") are high-quality prefabricated wall panels with excellent comprehensive performance, made of light steel frame and sandwich panels. FPS wall panels have broad application prospects in the field of prefabricated buildings, and are a prefabricated, highly adaptable, low-cost, and high-performance building exterior wall material. The rational use of FPS wall panels can reduce construction costs, improve construction efficiency, enhance construction quality, and eliminate the heavy scaffolding and formwork procedures in construction.

[0003] However, the traditional cladding method for FPS exterior wall panels at the connection nodes with the outer steel columns of prefabricated steel structures has quality problems such as easy water seepage, easy cracking, and poor cladding effect, which seriously affects the promotion and application of FPS exterior wall panels in the field of prefabricated steel structure buildings. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a joint at the junction of FPS exterior wall panel and steel column, which can effectively prevent cracking and water seepage, and improve the covering effect.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A joint at the junction of an FPS exterior wall panel and a steel column has the following structural features:

[0007] Includes exterior wall panels, rectangular steel columns, alkali-resistant fiberglass mesh, sealing structure, weather-resistant silicone sealant, fireproof coating, and wire mesh;

[0008] The exterior wall panel is a lightweight steel-framed wall panel. At the junction with rectangular steel columns, nodes are formed. The rectangular steel columns protrude outwards relative to the exterior wall panel towards the interior and exterior, forming four internal corners with the exterior wall panel. At the nodes, polyurethane foam is used to fill the gaps between the exterior wall panel and the rectangular steel column to form joints. The gaps on the interior side of the joint are filled with gypsum mortar, and the gaps on the exterior side are filled with weather-resistant silicone sealant, together forming the sealing structure at the nodes. A fire-retardant coating is applied to the exterior of the rectangular steel column, and a layer of wire mesh is wrapped around the fire-retardant coating, connecting the wire mesh to the sealing structure. On the exterior side, the column surface of the rectangular steel column and the wall surface of the exterior wall panel are fully covered with alkali-resistant fiberglass mesh. On the interior side, the column surface of the rectangular steel column is also fully covered with alkali-resistant fiberglass mesh, extending along the internal corners towards the wall surface of the exterior wall panel, forming an overlapping section on the exterior wall panel.

[0009] The structural features of this utility model also lie in:

[0010] The length of the overlapping section is 375mm.

[0011] The wire mesh is galvanized wire mesh.

[0012] The fire-retardant coating is a non-intumescent fire-retardant paint.

[0013] The joints are filled with M7.5 gypsum mortar into the gaps on the indoor side.

[0014] Compared with existing technologies, the beneficial effects of this utility model are reflected in:

[0015] This invention utilizes polyurethane foam to fill the joints and embed gypsum mortar and weather-resistant silicone sealant to form a sealing structure at the joints. This effectively prevents dust, moisture, and water from entering the joints, thus improving the construction quality at the joints. It offers excellent sealing, waterproof and seepage-proof performance, durability, and high fire safety. By wrapping the rectangular steel column with wire mesh, the probability of cracks appearing at the wall-column connection joints is significantly reduced, enhancing the overall integrity of the wall-column connection joints. By fully covering the rectangular steel column surface and the exterior wall panel surface facing outwards with alkali-resistant fiberglass mesh, and also fully covering the rectangular steel column surface facing inwards with alkali-resistant fiberglass mesh, extending along the inside corners towards the exterior wall panel surface to overlap the exterior wall panel surface, the alkali-resistant fiberglass mesh improves the crack resistance and corrosion resistance of the joints. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a magnified schematic diagram of the local structure at the node.

[0018] In the diagram, 1 is the exterior wall panel; 11 is the steel keel; 12 is the calcium silicate board; 13 is the thermal insulation lightweight polymer; 2 is the rectangular steel column; 3 is the alkali-resistant glass fiber mesh; 31 is the overlap section; 4 is the polyurethane foaming agent; 5 is the gypsum mortar; 6 is the weather-resistant silicone sealant; 7 is the fireproof coating; 8 is the wire mesh; and 9 is the lightweight plaster gypsum layer. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] Please refer to Figures 1 to 2The node at the junction of the FPS exterior wall panel and the steel column in this embodiment includes the exterior wall panel 1, the rectangular steel column 2, the alkali-resistant glass fiber mesh 3, the sealing structure, the weather-resistant silicone sealant 6, the fireproof coating 7, and the wire mesh 8.

[0021] The exterior wall panel 1 is a lightweight steel-framed wall panel, constructed from steel keel 11 and calcium silicate board 12. Its inner cavity is filled with thermal insulation lightweight polymer 13. At the junction with rectangular steel columns 2, a node is formed. The rectangular steel columns 2 protrude outwards relative to the exterior wall panel 1 towards the interior and exterior, forming four internal corners with the exterior wall panel 1. At the node, polyurethane foam 4 is used to fill the gap between the exterior wall panel 1 and the rectangular steel column 2 to form a joint. The gap facing inwards is filled with M7.5 gypsum mortar 5, and the gap facing outwards is filled with weather-resistant silicone sealant 6, together forming a joint. The sealing structure at the point; the rectangular steel column 2 is coated with a non-expansive fireproof coating to form a fireproof coating 7, and a galvanized steel wire mesh 8 is wrapped around the fireproof coating 7. The steel wire mesh 8 is connected to the sealing structure; on the side facing the outside, the column surface of the rectangular steel column 2 and the wall surface of the outer wall panel 1 are fully covered with alkali-resistant glass fiber mesh cloth 3. On the side facing the inside, the column surface of the rectangular steel column 2 is fully covered with alkali-resistant glass fiber mesh cloth 3. At the inside corner, it extends along the inside corner towards the wall surface of the outer wall panel 1 to form an overlap section 31 with a length of 375mm on the wall surface of the outer wall panel 1.

[0022] The wire mesh 8 has a flat surface and faces the interior. A lightweight plaster layer 9 is placed between the wire mesh 8 and the alkali-resistant fiberglass mesh 3.

[0023] The node with the above-mentioned structural form proposed in this embodiment is applied to specific construction, and the construction effect is good and the applicability is excellent, as reflected in:

[0024] Using alkali-resistant glass fiber mesh 3 as a reinforcing material for crack resistance and protection can improve the crack resistance and corrosion resistance of the joint between the exterior wall panel 1 and the rectangular steel column 2.

[0025] The sealing structure at the joint is formed by polyurethane foam agent 4, gypsum mortar 5 and weather-resistant silicone sealant 6. The good expansion properties of polyurethane foam agent 4 make the gap at the wall-column connection joint well filled. It has stable chemical properties, high fire safety performance and long service life. Gypsum mortar 5 and weather-resistant silicone sealant 6 can effectively prevent dust, moisture and water from entering the wall-column connection joint. This improves the construction quality of the wall-column connection joint, and has good sealing performance, excellent waterproof and seepage-proof performance and long durability.

[0026] The rectangular steel column 2 is wrapped with wire mesh 8. Taking advantage of the strong structure and high integrity of wire mesh 8, the probability of cracks appearing at the wall-column connection node is greatly reduced, and the integrity of the wall-column connection node is enhanced.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A joint at the junction of an FPS exterior wall panel and a steel column, characterized in that: Includes exterior wall panels, rectangular steel columns, alkali-resistant fiberglass mesh, sealing structure, weather-resistant silicone sealant, fireproof coating, and wire mesh; The exterior wall panel is a lightweight steel frame wall panel. It forms a node at the intersection with the rectangular steel column. The rectangular steel column protrudes outward relative to the exterior wall panel in the direction of indoor and outdoor, forming four internal corners with the exterior wall panel. At the joint, polyurethane foam is used to fill the gap between the exterior wall panel and the rectangular steel column to form a joint. The gap facing the interior is filled with gypsum mortar, and the gap facing the exterior is filled with weather-resistant silicone sealant, together forming the sealing structure at the joint. The rectangular steel column is coated with a fireproof coating, and a layer of wire mesh is wrapped around the fireproof coating. The wire mesh is connected to the sealing structure. On the exterior side, the column surface of the rectangular steel column and the wall surface of the exterior wall panel are fully covered with alkali-resistant glass fiber mesh. On the interior side, the column surface of the rectangular steel column is fully covered with alkali-resistant glass fiber mesh. At the inside corner, the mesh extends along the inside corner towards the wall surface of the exterior wall panel, forming an overlapping section on the wall surface of the exterior wall panel.

2. The joint between the FPS exterior wall panel and the steel column as described in claim 1, characterized in that: The length of the overlapping section is 375mm.

3. The joint between the FPS exterior wall panel and the steel column as described in claim 1, characterized in that: The wire mesh is galvanized wire mesh.

4. The joint between the FPS exterior wall panel and the steel column according to claim 1, characterized in that: The fire-retardant coating is a non-intumescent fire-retardant paint.

5. The joint between the FPS exterior wall panel and the steel column according to claim 1, characterized in that: The joints are filled with M7.5 gypsum mortar into the gaps on the indoor side.

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