A combined cornice with a pressure top purlin, an outer wall cornice and a construction method thereof

Abstract

This invention proposes a combined capping purlin, an exterior wall capping, and its construction method. Addressing the problems of slow construction progress, ring beam misalignment, and poor building sealing in existing exterior wall capping systems, this invention punches holes in the surface of the capping purlin to create grouting holes. This allows for a streamlined construction process—assembly followed by grouting—shortening the construction period. Simultaneously, during the capping beam grouting process, the purlins support the formwork, ensuring the straightness of the capping. During grouting, grout fills the interior of the capping purlin, using the bent sheet metal on the sidewalls of the holes as studs to integrate the capping purlin and capping beam into a single unit. This ensures the airtightness, watertightness, and load-bearing strength of the capping. Furthermore, while maintaining sufficient load-bearing strength, the thickness of the capping purlin can be reduced, lowering costs.

Description

Technical Field

[0001] This invention relates to the field of light steel building technology, and in particular to a composite slab capping purlin, an exterior wall slab, and a construction method thereof. Background Technology

[0002] Light steel structures using color-coated steel sheet exterior walls typically have a low brick wall about one meter high around the perimeter. According to regulations, structural columns are installed every four meters along this low brick wall, and a concrete capping beam is poured at the top. At the junction of the low brick wall and the color-coated steel sheet wall, a purlin is installed to secure the sheet metal and also serves as the bottom frame of the windows. This practice means that the purlin installation must wait until the capping concrete capping beam is completed, severely impacting construction progress. Furthermore, the formwork for the capping beam is prone to misalignment, causing the top of the low wall to be uneven. Additionally, the large gaps between the capping beam and the purlins result in poor building sealing. Summary of the Invention

[0003] The purpose of this invention is to propose a capping purlin with perforations on the web surface, and to solve the problems of slow construction progress, ring beam deviation and poor building sealing in the prior art by using this capping purlin in the light steel exterior wall.

[0004] To achieve the above objectives, the present invention proposes a composite purlin for use in slabs, wherein holes are punched in the web surface of the purlin, and the sheet metal at the hole location is bent inwards after punching, serving as a stud for bonding with concrete.

[0005] Furthermore, foam strips are attached to the inner sides of the flanges on both sides of the purlin.

[0006] Furthermore, the bent sheet metal is bent inward on both sides of the hole perpendicular to the flange; the length of the bent surface is 50mm, and the bending angle is a right angle.

[0007] The present invention also proposes a combined light steel exterior wall platform, including a low wall, structural column reinforcement, ring beam reinforcement and capping purlin;

[0008] The reinforcing bars of the structural column are inserted into the low wall, with their ends extending out of the end face of the low wall; the reinforcing bars of the ring beam are installed above the low wall and fixedly connected to the ends of the reinforcing bars of the structural column; after the capping purlin is pre-installed above the ring beam reinforcing bars, concrete is poured into it through the holes in the web of the capping purlin to complete the pouring of the capping beam and the filling of the concrete inside the capping purlin.

[0009] Furthermore, the flanges on both sides of the capping purlin are respectively fixed to the outer and inner sloping edges by bolts; the bolts are screwed into the foam strip inside the capping purlin.

[0010] This invention also proposes a construction method for a combined light steel exterior wall platform, comprising the following steps:

[0011] Step 1: Build a low wall and fix the structural column steel bars inside;

[0012] Step 2: Install ring beam reinforcement bars above the low wall, and fix the ring beam reinforcement bars to the ends of the structural column reinforcement bars;

[0013] Step 3: Install purlin support templates on both sides of the low wall;

[0014] Step 4: Using the purlin support formwork, install the capping purlin above the ring beam reinforcement;

[0015] Step 5: Pour concrete into the coping beam through the holes on the surface of the coping purlin web to complete the pouring of the coping beam and the filling of the coping purlin with concrete.

[0016] Step 6: Remove the template and finish the edges of the assembly table.

[0017] Furthermore, in step 5, the casting of the capping beam relies on the purlin support template.

[0018] Furthermore, in step 5, the concrete is poured to be flush with the surface of the capping purlin, and the sheet metal punched in the web hole of the capping purlin serves as a stud bonded to the concrete.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] 1. This invention enables the pre-assembly and post-grouting of the exterior wall purlins by creating holes on the purlin surface as grouting holes. This eliminates the need to install the capping purlins after the capping beam has been poured, thus accelerating the construction cycle and making the construction process more reasonable.

[0021] 2. The pre-assembly and post-grouting design of the exterior wall platform of this invention allows the purlins to support the formwork during the grouting process of the capping beam, ensuring the straightness of the capping.

[0022] 3. The pre-assembly and post-grouting design of the exterior wall platform of this invention also realizes the pouring of concrete inside the capping purlin. By using the bent sheet metal of the hole sidewall as a stud, the capping purlin and capping beam are poured into a whole, ensuring the airtightness, watertightness and stress strength of the capping.

[0023] 4. Based on the overall integrity of the capping structure of this invention, it has a good stress-bearing structure. Therefore, the thickness of the strip can be reduced, thereby reducing the amount of material used.

[0024] 5. In this invention, foam strips are attached to the inner side of the flanges on both sides of the capping purlin. During the assembly and finishing process, this ensures that the nails will not reach the concrete and thus prevent them from being driven in. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the top purlin in an embodiment of the present invention;

[0026] Figure 2 This is a top view of the top purlin in an embodiment of the present invention;

[0027] Figure 3 This is a side view of the top purlin in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the overall structure of the exterior wall platform in an embodiment of the present invention. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be further described below.

[0030] Example 1: As Figure 4 As shown, the present invention proposes a combined light steel exterior wall platform, including a low wall 1, structural column reinforcement, ring beam reinforcement 2, capping purlin 3, and platform edge trim 4;

[0031] Based on the problems of slow construction progress, ring beam deviation and poor building sealing in the traditional external wall terrace, the present invention improves the assembly process of the capping purlin 3 and the external wall terrace.

[0032] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the composite platform uses a capping purlin 3. Holes are punched in the web surface of the purlin. After the sheet metal at the hole location is bent, it is bent inwards on both sides perpendicular to the flange, serving as studs 5 for bonding with the concrete. The length of the bent surface is 50mm, and the bending angle is a right angle. 30mm thick foam strips are attached to the inner side of the flanges on both sides of the purlin to ensure that the studs do not reach the concrete during the assembly of the platform edge finishing 4, thus preventing the studs from being unable to penetrate.

[0033] When the aforementioned coping purlin 3 is applied to the exterior wall terrace, the structure is as follows: Figure 4 As shown, the specific assembly steps are as follows:

[0034] Step 1: Build a low wall 1, and install fixed structural steel bars every four meters inside the wall;

[0035] Step 2: Install the ring beam reinforcement 2 above the low wall 1, and fix the ring beam reinforcement 2 to the end of the structural column reinforcement;

[0036] Step 3: Install purlin support formwork on both sides of the low wall 1;

[0037] Step 4: Using purlins to support the formwork, install capping purlins 3 above the ring beam reinforcement 2;

[0038] Step 5: Pour concrete into the capping beam through the holes on the surface of the web of the capping purlin 3, completing the pouring of the capping beam and the filling of the concrete inside the capping purlin 3. Figure 4 In order to facilitate the display of the interior of the capping purlin 3, the concrete poured inside the capping purlin 3 is not shown; the pouring of the capping beam relies on the purlin support formwork to ensure the straightness of the capping, and the concrete is poured to be flush with the surface of the capping purlin 3. The sheet metal punched in the web hole of the capping purlin 3 serves as the stud 5 that is bonded to the concrete, enhancing the water tightness and air tightness of the building.

[0039] Step 6: Remove the template, and fix the outer and inner sloping edges of the capping purlin 3 with bolts respectively (not shown in the figure); tighten the bolts into the foam strip 6 inside the capping purlin 3.

[0040] Step 7: Install the outer wall panel 7 on the edge of the platform, and install the wall purlin 8 on the inside of the outer wall panel 7.

[0041] The above are merely preferred embodiments of the present invention and do not constitute any limitation on the present invention. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and content disclosed in the present invention without departing from the scope of the present invention shall be deemed to have remained within the protection scope of the present invention.

Claims

1. A composite purlin for platform use, characterized in that, Grouting holes are formed by punching holes in the web surface of the capping purlin. The sheet metal at the hole location is bent inwards after punching, serving as a stud for bonding with the concrete. The sheet metal is bent inward on both sides of the hole perpendicular to the flange; the length of the bent surface is 50mm and the bending angle is a right angle.

2. The combined platform purlin according to claim 1, characterized in that, Foam strips are attached to the inner sides of the flanges on both sides of the top purlin.

3. A composite light steel exterior wall platform, using the coping purlin as described in any one of claims 1-2, characterized in that, This includes the reinforcement of low walls, structural columns, ring beams, and capping purlins; The reinforcing bars of the structural column are inserted into the low wall, with their ends extending out of the end face of the low wall; the reinforcing bars of the ring beam are installed above the low wall and fixedly connected to the ends of the reinforcing bars of the structural column; after the capping purlin is pre-installed above the ring beam reinforcing bars, concrete is poured into it through the holes in the web of the capping purlin to complete the pouring of the capping beam and the filling of the concrete inside the capping purlin.

4. The combined light steel exterior wall platform according to claim 3, characterized in that, The flanges on both sides of the capping purlin are fixed to the outer and inner sloping edges respectively by bolts; the bolts are screwed into the foam strip inside the capping purlin.

5. A method for constructing a modular light steel exterior wall platform, comprising constructing the modular light steel exterior wall platform as described in claim 3, characterized in that, Includes the following steps: Step 1: Build a low wall and fix the structural column steel bars inside; Step 2: Install ring beam reinforcement bars above the low wall, and fix the ring beam reinforcement bars to the ends of the structural column reinforcement bars; Step 3: Install purlin support templates on both sides of the low wall; Step 4: Using the purlin support formwork, install the capping purlin above the ring beam reinforcement; Step 5: Pour concrete into the coping beam through the holes on the surface of the coping purlin web to complete the pouring of the coping beam and the filling of the coping purlin with concrete. Step 6: Remove the template and finish the edges of the assembly table.

6. The construction method of the combined light steel exterior wall platform according to claim 5, characterized in that, In step 5, the casting of the capping beam relies on the purlin support formwork.

7. The construction method of the combined light steel exterior wall platform according to claim 5, characterized in that, In step 5, the concrete is poured to be flush with the surface of the capping purlin, and the sheet metal punched in the web hole of the capping purlin serves as a stud bonded to the concrete.

Images