Curtain wall keel and curtain wall construction method

Abstract

The invention relates to the technical field of curtain wall construction, in particular to a curtain wall keel and a curtain wall construction method. According to the method, the curtain wall design model is constructed, field measurement and calibration are carried out to ensure the accuracy of the curtain wall design model, the corresponding main keels and the auxiliary keels are welded in advance according to the codes set in the curtain wall design model and are hoisted to the corresponding positions of the building outer wall, structured splicing and fixing are achieved, the splicing efficiency is higher and more accurate, and the construction efficiency is improved. The shape of an original curtain wall keel is changed, the top of the top-layer curtain wall keel is fixed to the bottom of a building top-layer concrete beam, the bottom of the top-layer curtain wall keel is fixed to a lower-layer structure of a top-layer main keel, and the top-layer curtain wall keel is prevented from damaging a heat preservation layer structure of a building outer wall in the fixing construction process.

Description

Technical Field

[0001] The invention relates to the technical field of curtain wall construction, in particular to a curtain wall keel and a curtain wall construction method. Background Art

[0002] Building curtain wall refers to the non-load-bearing exterior wall enclosure of a building, which is usually composed of panels (glass, metal plates, stone slabs, ceramic plates, etc.) and the supporting structure behind it; most existing low-rise buildings adopt a design method that combines glass curtain walls and plate curtain walls. Glass curtain walls are fixed between floors, and plate curtain walls are installed on the exterior walls of the floor slabs, which can be beautiful and practical; the plate curtain wall needs to be fixed to the exterior wall of the building through curtain wall keels. Traditional curtain wall keels are mostly clamped on the exterior walls of the floor slabs, and the top of the top curtain wall keel is mostly connected to the upper part of the building structure through anchor bars. The anchor bars can easily damage the insulation layer structure and affect the building insulation effect. If the top curtain wall keel is passed straight to the top and fixed to the top of the building, the keel will have a large deadweight and is easy to deform, and the embedded parts will have higher bearing capacity requirements and higher costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the existing top curtain wall keel is easily damaged when being connected to the building exterior wall.

[0004] In order to solve the above problems, the present invention provides a construction method that can improve the fixing strength of curtain wall keels without damaging the thermal insulation layer structure of the building exterior wall. The specific scheme is: A curtain wall keel and curtain wall construction method, comprising the following steps: Step 1: Determine the positions of the main keels and secondary keels of the curtain wall according to the architectural design drawings, and construct a curtain wall design model based on the building structure, main keels, secondary keels and curtain wall; Step 2: On-site measurement and calibration of the curtain wall design model; Step 3: Encode each curtain wall, main keel and secondary keel in the curtain wall design model, prefabricate the curtain wall according to the curtain wall design model, and make the main keel and secondary keel on site; Step 4: According to the set code in the curtain wall design model, pre-weld and fix each main keel to the corresponding secondary keel on the ground; Step 5: hoist the main keel and secondary keel of the top floor to the corresponding position of the top of the building exterior wall, and fix the top of the main keel of each top floor to the bottom of the concrete beam of the top floor of the building, and fix the bottom of the main keel of each top floor to the lower structure of the main keel of the top floor; Step 6: Weld and fix the adjacent secondary keels on the top layer; Step 7: hoist the main keels and secondary keels of the remaining layers to the corresponding positions of the building exterior wall in sequence, and weld and fix the adjacent secondary keels on the same layer; Step 8: Install each curtain wall onto the corresponding secondary keel according to the codes set in the curtain wall design model.

[0005] The present invention adopting the above technical solution, compared with the prior art, has the following beneficial effects: The present invention constructs a curtain wall design model and calibrates it on-site to ensure the accuracy of the curtain wall design model. According to the codes set in the curtain wall design model, the corresponding main keels and secondary keels are pre-welded and hoisted to the corresponding positions on the building exterior wall to achieve structured splicing and fixation, with higher and more accurate splicing efficiency. It changes the shape of the original curtain wall keel, fixes the top of the top-layer curtain wall keel to the bottom of the building top concrete beam and the bottom to the lower structure of the top-layer main keel, avoiding the anchor bars of the top-layer curtain wall keel from damaging the thermal insulation layer structure of the building exterior wall.

[0006] As a preference, a further technical solution of the present invention is: The main keel of the top layer is formed by buckling two L-shaped support rods in opposite directions. The top and bottom of the main keel of the top layer are respectively fixed to the bottom of the top-layer concrete beam and the lower structure of the top-layer main keel through post-embedded parts. The two L-shaped support rods, the top-layer concrete beam and the lower structure of the top-layer main keel form a main keel of the top layer in a structure similar to the Chinese character "互" (mutual), enabling the top of the main keel of the top layer to be fixed to the bottom of the top-layer concrete beam. At the same time, the bottom of the main keel of the top layer can be fixed to the lower structure of the top-layer main keel, and the main keel structure of the "互" - shaped structure is more firm.

[0007] The post-embedded part includes chemical bolts, and the chemical bolts are used to be inserted into the bottom of the top-layer concrete beam and the outside of the top-layer concrete floor slab. Connecting the main keel of the top layer and the concrete structure through chemical bolts makes the fixed structure of the main keel of the top layer more stable.

[0008] Prefabricate the curtain wall according to the curtain wall design model, and fabricate the main keel and secondary keel on-site. Specifically: Obtain the size and shape information of the main keel, secondary keel and curtain wall in the curtain wall design model, send the size and shape information of the curtain wall to the factory, and the factory manufactures the curtain wall. On the construction site, fabricate the main keel and secondary keel according to the size and shape information of the main keel and secondary keel. The main keel and secondary keel are made of square steel pipes. Description of the Drawings

[0009] Figure 1 is a schematic diagram of the curtain wall and curtain wall keel structure of the embodiment of the present invention; Figure 2 is a side view of the connection between the top-layer curtain wall keel and the building structure of the embodiment of the present invention; Figure 3 is Figure 2 the partial enlarged view of A in

[0010] In the figure: 1. Top concrete beam; 2. Main purlin; 3. Top concrete floor slab; 4. Secondary purlin; 5. Connecting plate; 6. Screw; 7. Chemical hose. DETAILED DESCRIPTION

[0011] The present invention will be further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0012] See attached Figure 1-3 The embodiment of the present invention discloses a curtain wall keel and a curtain wall construction method, comprising the following steps: Step 1: Determine the position and shape of the main keel 2 and the secondary keel 4 of the curtain wall according to the architectural design drawings. Specifically, the architectural design drawings are provided by the construction contractor. Modeling is performed in Revit software based on the architectural design drawings to obtain a basic building model, and then the drawing model is positioned; the curtain wall and keel are designed based on the positioning results, and the curtain wall and keel design drawings are generated. The curtain wall and keel are constructed into the basic building model to obtain a curtain wall design model; Step 2: Construction personnel measure the dimensions of the building curtain wall on site and calibrate the curtain wall design model; Step 3: In the curtain wall design model, each curtain wall, main keel 2 and secondary keel 4 are coded respectively, such as curtain wall 1-1, curtain wall 1-2, curtain wall 1-3, main keel 21-1, main keel 21-2, main keel 21-3, secondary keel 41-1, secondary keel 41-2, secondary keel 41-3, etc. The codes of secondary keel 4 and main keel 2 correspond one to one, so as to facilitate the construction personnel to find and install. The curtain wall design model is sent to the factory, and the factory personnel manufacture the curtain wall according to the curtain wall design model, and manufacture the main keel 2 and secondary keel 4 on site according to the curtain wall design model. Step 4: According to the codes set for the main keel 2, the secondary keel 4 and the curtain wall in the curtain wall design model, each main keel 2 is welded and fixed to the corresponding secondary keel 4 on the ground in advance. The main keel 2 and the secondary keel 4 are made of square steel pipes. According to the sizes and shapes of the main keel 2 and the secondary keel 4 in the curtain wall design model, the square steel pipes are heated and bent on site. The curtain wall is pre-made in the factory with aluminum plates, wherein the main keel 2 of the top floor is formed by two support rods buckled forward and backward, and the two support rods are welded and fixed with square steel pipes. The two L-shaped square steel pipes and the top concrete beam and the top concrete floor slab 3 are in an "inter" shape structure, and the two adjacent main keels 2 are welded and fixed; Step 5: hoist the main keel 2 and the secondary keel 4 of the top floor to the corresponding position on the top of the building's exterior wall. Specifically, the top of the main keel 2 of each top floor is vertically fixed to the bottom of the outer side of the top concrete beam 1 of the building, and it does not contact the insulation layer of the building's exterior wall. The bottom of the main keel 2 of each top floor is fixed to the lower structure of the main keel 2 of the top floor, that is, on the outer side of the top concrete floor slab 3 below the top concrete beam 1 of the building; Step 6: After the main keel 2 and the secondary keel 4 on the top layer are installed, the adjacent secondary keels 4 on the top layer are welded and fixed; Step 7: hoist the main keels 2 and secondary keels 4 of the remaining layers to the corresponding positions of the building exterior wall in sequence according to the set positions and codes in the curtain wall design model, and weld and fix the adjacent secondary keels 4 on the same layer; Step 8. According to the code set in the curtain wall design model, install each curtain wall on the corresponding secondary keel 4. The curtain wall is made of aluminum plates in advance in the factory. Fix the columns and beams of the curtain wall and the secondary keel 4 with self-tapping screws. Then check the gap between adjacent aluminum plates to ensure that they are horizontal and vertical, and stick protective tape on both sides of the gap.

[0013] In this embodiment, the top and bottom of the main keel 2 of the top layer are respectively fixed to the bottom of the top concrete beam 1 and the outer side of the top concrete floor slab 3 through post-embedded parts. The main keel 2 of the top layer in the "mutual" shape structure allows the top of the main keel 2 of the top layer to be fixed to the bottom of the top concrete beam 1, and at the same time, the bottom of the main keel 2 of the top layer can be fixed to the outer side of the top concrete floor slab 3, and the main keel 2 of the "mutual" shape structure is more solid.

[0014] In this embodiment, the post-embedded parts include chemical bolts, which include screw rods 6 and chemical hoses 7. During construction, the top of the main keel 2 of the top layer is first constructed. Specifically, the top of the main keel 2 of the top layer is fixed with a connecting plate 5, bolt holes are opened around the connecting plate 5, holes are drilled at the outer position of the bottom of the top concrete beam 1, and the chemical hose 7 of the chemical bolt is placed in the concrete hole, and then the screw rod 6 of the chemical bolt is screwed into the concrete hole with the chemical hose 7, and the connecting plate 5 is fixed by rotating the nut. After the chemical hose 7 melts and solidifies, the connecting plate 5 is firmly fixed to the concrete structure through the chemical bolts; when constructing the bottom of the main keel 2 of the top layer, two connecting pipes are first vertically welded and fixed at the bottom of the main keel 2 of the top layer, and the connecting plate 5 is fixed at the far end of the connecting pipe. The connecting plate 5 is connected and fixed to the outer side of the top concrete floor slab 3 below the top concrete beam 1 of the building through the same chemical bolts, so that the fixed structure of the main keel 2 of the top layer is more stable.

[0015] In the present embodiment, the curtain wall is prefabricated according to the curtain wall design model, and the main keel 2 and the secondary keel 4 are manufactured on site, specifically: the size and shape information of the curtain wall in the curtain wall design model is obtained, the size and shape information of the curtain wall is sent to the factory, and the curtain wall is prefabricated in the factory; the size and shape information of the main keel 2 and the secondary keel 4 in the curtain wall design model is obtained, and a two-dimensional drawing is generated, and the size and shape of the main keel 2 and the secondary keel 4 are marked according to the drawing, such as the arc length, radius, distance and other information of the main keel 2 or the secondary keel 4, and the main keel 2 and the secondary keel 4 are manufactured on site using square steel pipes.

[0016] The present invention constructs a curtain wall design model and performs on-site measurement and calibration to ensure the accuracy of the curtain wall design model. According to the code set in the curtain wall design model, the corresponding main keel 2 and the secondary keel 4 are welded in advance and hoisted to the corresponding position of the building outer wall, so as to achieve structural splicing and fixation, and the splicing efficiency is higher and more accurate. The shape of the original curtain wall keel is changed, so that the top of the top curtain wall keel is fixed to the bottom of the top concrete beam 1 of the building, and the bottom is fixed to the top concrete floor slab 3, so as to avoid the top curtain wall keel from damaging the insulation layer structure of the building outer wall during construction.

[0017] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made using the contents of the present specification and its drawings are included in the scope of rights of the present invention.

Claims

1. A curtain wall keel and curtain wall construction method, characterized in that: The following steps are involved: Step 1: Determine the positions of the main keels and secondary keels of the curtain wall according to the architectural design drawings, and construct a curtain wall design model based on the building structure, main keels, secondary keels and curtain wall; Step 2: On-site measurement and calibration of the curtain wall design model; Step 3: Encode each curtain wall, main keel and secondary keel in the curtain wall design model, prefabricate the curtain wall according to the curtain wall design model, and make the main keel and secondary keel on site; Step 4: According to the set code in the curtain wall design model, pre-weld and fix each main keel to the corresponding secondary keel on the ground; Step 5: hoist the main keel and secondary keel of the top floor to the corresponding position of the top of the building exterior wall, and fix the top of the main keel of each top floor to the bottom of the concrete beam of the top floor of the building, and fix the bottom of the main keel of each top floor to the lower structure of the main keel of the top floor; Step 6: Weld and fix the adjacent secondary keels on the top layer; Step 7: hoist the main keels and secondary keels of the remaining layers to the corresponding positions of the building exterior wall in sequence, and weld and fix the adjacent secondary keels on the same layer; Step 8. Install each curtain wall on the corresponding secondary keel according to the code set in the curtain wall design model.

2. The curtain wall keel and curtain wall construction method according to claim 1, characterized in that: The main keel of the top layer is formed by two L-shaped support rods buckled together, and the top and bottom of the main keel of the top layer are respectively fixed to the bottom of the top concrete beam and the lower structure of the top main keel through post-embedded parts.

3. The curtain wall keel and curtain wall construction method according to claim 1, characterized in that: The post-embedded parts include chemical bolts, which are used to be inserted at the bottom of the top concrete beam and the outside of the top concrete floor.

4. The curtain wall keel and curtain wall construction method according to claim 1, characterized in that: The curtain wall is prefabricated according to the curtain wall design model, and the main purlin and secondary purlin are manufactured on site. Specifically, the size and shape information of the main purlin, secondary purlin and curtain wall in the curtain wall design model is obtained, and the size and shape information of the curtain wall is sent to the factory. The factory manufactures the curtain wall, and the main purlin and secondary purlin are manufactured on the construction site according to the size and shape information of the main purlin and secondary purlin. The main purlin and secondary purlin are made of square steel tubes.

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