A construction formwork for curved eaves of buildings

Abstract

This invention provides a construction template for an arched eaves of a building, comprising a bottom mold, end molds, and side molds. The bottom mold is supported by scaffolding under the eaves, and end molds for the eaves are provided at both ends of the bottom mold. The side molds are located on the outer side of the eaves, with their ends connected to the end molds. The side molds include flexible templates, support rods, and U-shaped connectors. The support rods are evenly distributed, and any two adjacent support rods are connected by U-shaped connectors. In response to changes in the opening of the U-shaped connectors by external force, the curvature of the arc corresponding to the side mold changes accordingly. The flexible templates are close to the inner side of the support rods to form the outer arc surface of the eaves. A flexible template is provided inside the support rods to form the outer arc surface of the eaves. The U-shaped connectors connect the support rods, allowing adjustment of the opening of the U-shaped connectors under external force. This allows for adaptation to different curved surfaces when the opening of the U-shaped connectors changes.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, specifically relating to a construction template for an arched eaves of a building. Background Technology

[0002] Modern architectural designs are unique and have high requirements for aesthetic quality, resulting in greater technical standards and construction difficulties, as well as more complex construction processes. In particular, the curved fair-faced concrete exterior wall structure with variable curvature radius has many variations and strict requirements for appearance quality. Appropriate formwork support systems and construction methods must be used to ensure the construction quality of the curved structure.

[0003] Existing technologies for formwork on cantilevered curved surfaces of buildings include two types: steel formwork and wooden formwork. Steel formwork requires the design of steel molds of different heights and curvatures according to the curvature of the curved surface, resulting in very high manufacturing costs and long manufacturing cycles. Moreover, steel formwork is usually not reusable and is not suitable for projects with tight schedules and high cost control requirements. The joints of the curved surface are prone to grout leakage, causing quality defects such as honeycomb and pitted surfaces. On the other hand, wooden formwork usually decomposes the curved wall into several straight formwork sections for support, which can easily cause defects such as uneven curved surfaces (with sharp edges), structural dimensional deviations, formwork joints, and misalignments, increasing the difficulty of construction and secondary repairs, and may even affect the handover and acceptance.

[0004] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a construction template for curved eaves of buildings.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A construction template for an arched eaves of a building includes a bottom formwork, end formwork, and side formwork. The bottom formwork is supported by scaffolding under the eaves, and end formwork for the eaves is provided at both ends of the bottom formwork. The side formwork is located on the outside of the eaves, and its two ends are connected to the end formwork.

[0008] The side mold includes a flexible template, support rods, and U-shaped connectors. The support rods are evenly distributed, and any two adjacent support rods are connected by U-shaped connectors. In response to changing the opening of the U-shaped connectors by external force, the curvature of the arc corresponding to the side mold changes accordingly. The flexible template is close to the inner side of the support rods to form the outer arc surface of the eaves.

[0009] Preferably, the diameter of the arc portion corresponding to the U-shaped connector is adapted to the outer diameter of the support rod, and there are no fewer than two U-shaped connectors between any two adjacent support rods.

[0010] Preferably, the U-shaped connector has arc-shaped portions at both ends that extend along the outer wall of the support rod, and the arc-shaped portions are fixed to the outer wall of the support rod by welding.

[0011] Preferably, bolts are provided at both ends of each support rod on the flexible template, and mounting holes are provided on the support rods along the direction perpendicular to the flexible template. The bolts are connected to nuts after passing through the mounting holes.

[0012] Preferably, the flexible template is a cold-rolled steel plate with a thickness of 1-3mm.

[0013] Preferably, the construction template further includes a positioning rod, one end of which is fixed to the scaffolding corresponding to the outer side of the eaves, and the other end is attached to the scaffolding through an arc-shaped plate and erected to the outer side of the corresponding support rod.

[0014] Preferably, at least two horizontally distributed crossbeams are provided on the scaffolding, with the two crossbeams corresponding to the upper and lower edges of the side formwork, respectively, and the positioning rod is connected to the crossbeams accordingly.

[0015] Preferably, one end of the positioning rod is fixed to the cross frame by a fastener;

[0016] The other end of the positioning rod is slidably fitted with a stud along its axial direction. The stud is fixed to the arc-shaped plate, and a limiting baffle that stops the positioning rod is threaded onto the outside of the stud.

[0017] Beneficial effects: A flexible template is set on the inner side of the support rod to form the outer arc surface of the eaves. The U-shaped connector connects the support rod, so the opening degree of the U-shaped connector can be adjusted under the action of external force. When the opening of the U-shaped connector changes, the angle of the two adjacent support rods changes, so as to realize the curvature of the arc corresponding to the side mold. The flexible template can change according to the change of the side mold and is supported by the support rod, so as to adapt to different arc surfaces. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. Wherein:

[0019] Figure 1 This is a simplified structural diagram of the construction template provided in a specific embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the connection structure of the support rod in a specific embodiment of the present invention.

[0021] In the diagram: 1. Eaves; 2. Flexible formwork; 3. End formwork; 4. Support rod; 5. U-shaped connector; 6. Positioning rod; 7. Horizontal frame; 8. Stud; 9. Limiting plate; 10. Curved plate; 11. Bolt. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0023] In the description of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "connected" and "linked" used in this invention should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0025] like Figure 1-2 As shown, a construction template for an arched eaves of a building includes a bottom mold, end molds 3 and side molds. The bottom mold and end molds are common templates, specifically ordinary wooden molds or steel molds. Scaffolding is erected on the outer side below the eaves 1. The ground is supported under the eaves 1 by the scaffolding to form the lower surface of the eaves 1. The end molds 3 of the eaves 1 are provided at both ends of the bottom mold. The side molds are set on the outer side of the eaves 1, and their two ends are connected to the end molds to form the outer arc surface of the eaves 1.

[0026] The side mold includes a flexible template 2, support rods 4, and U-shaped connectors 5. The flexible template 2 can deform under external force to adapt to the curved outer surface with different curvatures. Multiple support rods 4 are distributed at equal intervals, and any two adjacent support rods 4 are connected by U-shaped connectors 5. The two ends of the U-shaped connectors 5 are fixed to the outer wall of the support rods 4. The U-shaped connectors 5 can be steel bars with a diameter of 8-16mm, so that the U-shaped connectors 5 can deform under external force, thereby adjusting the support rods 4. In response to changing the opening of the U-shaped connectors 5 by external force, the curvature of the arc corresponding to the side mold changes accordingly. The flexible template 2 is close to the inner side of the support rods 4 to form the outer arc surface of the eaves 1.

[0027] In an optional embodiment, the diameter of the arc portion corresponding to the closed end of the U-shaped connector 5 is adapted to the outer diameter of the support rod 4, so that the inner sides of the support rod 4 and the U-shaped connector 5 are located on the same curved surface, ensuring the support capacity for the flexible template 2. There are no fewer than two U-shaped connectors 5 between any two adjacent support rods 4, with at least one U-shaped connector 5 at each end of the support rod 4. The U-shaped connector 5 is made of steel bar, has a shape-determinable strength, and can be deformed by manual bending, thereby forming a support structure to support the flexible template 2. The U-shaped connector 5 connects the support rods 4 into a whole, making the support structure of the flexible template more stable. The U-shaped connector 5 can be deformed multiple times, thus achieving the purpose of reuse.

[0028] In this embodiment, 5-10 support rods 4 form a group. Adjacent support rods 4 within the same group are connected by U-shaped connectors 5. Support rods 4 between adjacent groups are hinged in a detachable manner, specifically by hinges, with the hinges secured to the support rods 4 by bolts 11. This allows for modular assembly and transportation, reducing construction difficulty.

[0029] In this embodiment, the U-shaped connector 5 has arc-shaped portions at both ends, which increase the contact area with the support rod 4. The arc-shaped portions are fixed to the outer wall of the support rod 4 by welding.

[0030] In an optional embodiment, the flexible template 2 is fixed to the support rod 4 by bolts 11 so that the support rod 4 is close to the flexible template 2. The flexible template 2 is provided with bolts 11 corresponding to both ends of each support rod 4. The support rod 4 is provided with mounting holes, which penetrate the support rod 4 in a direction perpendicular to the flexible template 2. The bolts 11 pass through the mounting holes and are connected to nuts. The nuts are tightened to fix the flexible template 2 to the inside of the support rod 4.

[0031] In this embodiment, the flexible template 2 is provided with screw holes corresponding to the bolts 11, so that the bolts 11 can pass through the flexible template 2 and connect to the support rods 4.

[0032] Alternatively, bolt 11 can be welded and fixed to the flexible template 2.

[0033] The support rod 4 is a hollow tube, and the inner diameter of the mounting hole is larger than the outer diameter of the bolt 11, so that the bolt 11 can be finely adjusted when different curvatures are adjusted.

[0034] In this embodiment, the flexible template 2 is made of cold-rolled steel plate with a thickness of 1-3mm. The flexible templates 2 of adjacent sets of support rods 4 overlap each other, with an overlap of not less than 5cm.

[0035] The width of the flexible template 2 is the same as the length of the support rod 4. The flexible templates 2 of two adjacent sets of support rods 4 can be detachably fixed by screws at the overlapping part.

[0036] In an optional embodiment, the construction template further includes a positioning rod 6, which is used to support the support rod 4 on the outside, thereby ensuring that the side formwork does not deform during the pouring process.

[0037] By setting up scaffolding as the load-bearing part of the support positioning rod 6, specifically, a scaffolding is set up on the outside of the eaves 1 and connected to the bottom of the eaves 1 as a whole. One end of the positioning rod 6 is fixed on the corresponding scaffolding on the outside of the eaves 1, and the other end is connected to the outside of the corresponding support rod 4 by the arc plate 10. This is used to position the support rod 4 and prevent the support rod 4 from being unstable.

[0038] In order to install the positioning rod 6 and make the positioning rod 6 correspond to the support rod 4, at least two horizontally distributed crossbeams 7 are provided on the scaffold. The two crossbeams 7 correspond to the upper and lower edges of the side formwork, respectively. The crossbeams 7 can be spliced ​​from scaffold steel pipes and only need to extend along the horizontal plane where the upper and lower edges of the side formwork are located. The positioning rod 6 is connected to the crossbeams 7 accordingly.

[0039] Each crossbar is provided with a positioning rod 6 corresponding to the support rod 4. The positioning rod 6 preferably extends in the vertical direction along the arc tangent of the corresponding support rod 4 position.

[0040] The main body of the positioning rod 6 is the steel pipe of the scaffold. One end of the positioning rod 6 is fixed to the horizontal frame 7 through ordinary scaffold connecting fasteners. The positioning rod 6 points horizontally to the support rod 4. The other end of the positioning rod 6 is slidably fitted with a stud 8 along its axis. The stud 8 can extend and retract inside the positioning rod 6. The stud 8 is fixed to the arc plate 10. The stud 8 is externally threaded with a limiting plate 9 to stop the positioning rod 6. The limiting plate 9 adjusts the relative position through the thread to ensure the length of the positioning rod 6, thereby tightening the support rod 4.

[0041] In this embodiment, the diameter of the support rod is adjusted according to the corresponding rate of change of the steel pipe with a diameter of 50-200mm.

[0042] Based on the above construction template, the construction method for the arched eaves 1 includes the following steps:

[0043] Step S1: First, the steel reinforcement cage is tied for the building and the eaves section 1.

[0044] Step S2: Erect scaffolding. The scaffolding is erected up to the lower surface of the eaves 1 section to support the bottom surface. The bottom formwork of the eaves 1 is spliced ​​with the main body of the building.

[0045] Step S3: Place the end mold 3 accordingly, adjust the curvature of the side mold by bending the U-shaped connector 5 according to the curvature of the outer arc surface of the eaves 1, and fix the flexible template 2 and the support rod 4 with bolts 11.

[0046] Step S4: After placing the side mold in the corresponding position, it is supported from the outside to the inside of the support rod 4 by the positioning rod 6.

[0047] Step S5: Pour concrete to integrate the eaves 1 and the main building structure.

[0048] In this embodiment, a release agent is applied to the inside of the flexible template 2.

[0049] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention shall be within the scope of protection of the pending claims of the present invention.

Claims

1. A construction formwork for an arched eaves of a building, characterized in that, It includes a bottom mold, end molds and side molds. The bottom mold is supported by scaffolding under the eaves, and the end molds of the eaves are provided at both ends of the bottom mold. The side molds are set on the outside of the eaves, and their two ends are connected to the end faces respectively. The side mold includes a flexible template, support rods, and U-shaped connectors. The support rods are evenly distributed, and any two adjacent support rods are connected by U-shaped connectors. In response to changing the opening of the U-shaped connectors by external force, the curvature of the arc corresponding to the side mold changes accordingly. The flexible template is close to the inner side of the support rods to form the outer arc surface of the eaves. The diameter of the arc portion corresponding to the closed end of the U-shaped connector is adapted to the outer diameter of the support rod, so that the inner sides of the support rod and the U-shaped connector are located on the same curved surface, and there are no fewer than two U-shaped connectors between any two adjacent support rods.

2. The construction formwork for the arched eaves of a building according to claim 1, characterized in that, The U-shaped connector has arc-shaped portions at both ends that extend along the outer wall of the support rod, and the arc-shaped portions are fixed to the outer wall of the support rod by welding.

3. The construction formwork for the arched eaves of a building according to claim 1, characterized in that, Each of the flexible templates has bolts at both ends corresponding to each support rod. The support rods have mounting holes that extend through them in a direction perpendicular to the flexible template. The bolts pass through the mounting holes and are then connected to nuts.

4. The construction formwork for the arched eaves of a building according to claim 3, characterized in that, The flexible template is made of cold-rolled steel plate with a thickness of 1-3mm.

5. The construction formwork for the arched eaves of a building according to claim 1, characterized in that, The construction template also includes a positioning rod, one end of which is fixed to the scaffolding corresponding to the outer side of the eaves, and the other end is attached to the scaffolding through an arc-shaped plate to the outer side of the corresponding support rod.

6. The construction formwork for the arched eaves of a building according to claim 5, characterized in that, At least two horizontally distributed crossbeams are provided on the scaffolding, with the two crossbeams corresponding to the upper and lower edges of the side formwork, respectively, and the positioning rods are connected to the crossbeams accordingly.

7. The construction formwork for the arched eaves of a building according to claim 6, characterized in that, One end of the positioning rod is fixed to the cross frame by a fastener; The other end of the positioning rod is slidably fitted with a stud along its axial direction. The stud is fixed to the arc-shaped plate, and a limiting baffle that stops the positioning rod is threaded onto the outside of the stud.

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