Ultrahigh outer wall steel formwork single-side formwork supporting device and construction method thereof

Abstract

The invention provides an ultrahigh outer wall steel formwork single-side formwork supporting device and a construction method thereof. The ultrahigh outer wall steel formwork single-side formwork supporting device comprises an upper structure and a lower structure. The upper structure comprises a customized steel formwork, channel steel secondary keels are welded to the back face of the customized steel formwork, the triangular supporting frames are connected with the channel steel secondary keels in a welding mode and connected with the lower structure in a bolt connection mode, and the triangular supporting frames are connected through transverse reinforcing square steel. The transverse reinforcing square steel is fixedly connected with the triangular supporting frame through a long screw and a nut. The lower structure comprises a plurality of supporting stand columns, and the supporting stand columns are connected through transverse connecting nodes. And the lower structure of the formwork supporting device is fixedly connected with the bottom plate and the first-layer wall body through the connecting nodes. Efficient and safe construction in a narrow space tightly attached to a foundation pit supporting pile can be achieved, the device is suitable for a low-height bottom layer wall and particularly suitable for an ultrahigh outer wall, modular design is adopted for the device, all parts can be customized, the device is matched with a hoisting mode to be installed and spliced on site, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and in particular relates to a single-sided support device for ultra-high exterior wall steel formwork and its construction method. Background Technology

[0002] With the development of urbanization, urban land space is becoming increasingly scarce, and the land utilization rate within the land use boundary is increasing. The structure is expanding outward and downward at the same time, which makes it possible for the basement structure to be "close" to the foundation pit support piles. In some designs, the spacing is even only 20cm. In this area, it is impossible to carry out a series of operations such as waterproofing and formwork from the outside when constructing the basement exterior wall, so only the formwork can be constructed on the inside.

[0003] Existing tool-type and movable single-sided formwork devices are often limited to low-height, low-rise walls. While traditional single-sided formwork methods, such as installing reinforcing bars in the support structure and welding tie rods, and setting diagonal bracing on one side, can achieve multi-story single-sided formwork, they are complex to construct, occupy a large area, have low construction efficiency, and pose significant safety hazards. Therefore, this invention proposes a single-sided formwork device for ultra-high exterior walls using steel formwork and its construction method. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a single-sided formwork support device for ultra-high exterior wall steel formwork and its construction method, which solves the problems of poor applicability, complex construction, and large site occupancy of traditional formwork support devices.

[0005] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0006] A single-sided formwork support device for ultra-high exterior wall steel formwork includes an upper structure and a lower structure connected by bolts. The upper structure includes a custom steel formwork with multiple channel steel secondary keels welded to its back. Multiple triangular support frames are welded to the channel steel secondary keels and evenly spaced. The triangular support frames are connected together by transverse reinforcing square steel, which is also bolted to the triangular support frames. The triangular support frames are also bolted to the lower structure. The lower structure includes multiple support columns connected by transverse connection nodes. The support columns are fixed to the base plate and the first-floor wall through these connection nodes.

[0007] Furthermore, the customized steel formwork is either a single piece or composed of multiple pieces spliced ​​together, and lifting lugs are provided on the customized steel formwork.

[0008] Furthermore, the transversely reinforcing square steel is connected and fixed to the hypotenuse of the triangular support frame by a long screw and a nut.

[0009] Furthermore, the upper structure and the lower structure cooperate with each other for single-sided formwork support of the first-floor wall, or the upper structure alone is used for single-sided formwork support of the first-floor wall.

[0010] Furthermore, the connection node includes a convex connector, a pre-embedded concave connector, and a pin; the convex connector includes a connecting base plate, on which a protrusion A with a pin mounting hole is provided; the pre-embedded concave connector includes a screw rod, on which a connecting top plate is provided; the connecting top plate is provided with two protrusions B that match the protrusion A and have pin mounting holes; the screw rod portion of the pre-embedded concave connector is pre-embedded in the base plate or the first-floor wall, and the connecting base plate portion of the convex connector is welded to the supporting column; when the supporting column is connected to the base plate or the first-floor wall, the protrusion A is inserted between the two protrusions B and fixed by the pin.

[0011] Furthermore, the transverse connection node includes a concave connector and a connecting rod; the concave connector includes a connecting plate, on which two protrusions C with pin mounting holes are provided, and both ends of the connecting rod are provided with protrusions D with pin mounting holes; the connecting plate portion of the concave connector is welded to the supporting column, and the concave connectors on two adjacent supporting columns are connected by a connecting rod, and the protrusions D at both ends of the connecting rod are inserted between the two protrusions C and fixed by pins.

[0012] A construction method for the above-mentioned single-sided support device for ultra-high exterior wall steel formwork includes the following steps: S1: When constructing the first-floor walls and floor slab, pre-embed recessed connectors; S2: Install and fix the support column, weld protruding connectors to the bottom of the support column and the side near the wall, and fix the protruding connectors to the pre-embedded recessed connectors on the base plate and the wall with pins; weld recessed connectors to the side of the support column, and fix the connecting rod between the recessed connectors with pins. S3: Install the superstructure. The superstructure is installed in place on the ground as a whole by hoisting. S4: Use bolts to connect and fix the triangular support frame to the support column to ensure the integrity of the device.

[0013] The present invention has the following beneficial effects: 1. Improved construction efficiency and safety: The single-sided formwork support device and construction method for ultra-high exterior wall steel formwork provided by this invention can achieve efficient and safe construction in a narrow space close to the foundation pit support piles, solving the problems of complex construction, low efficiency and great safety hazards of traditional single-sided formwork support methods.

[0014] 2. High adaptability: This device is not only suitable for low-rise ground walls, but also has an effective single-sided formwork solution designed for ultra-high exterior walls, which broadens the scope of application.

[0015] 3. Stable structure: The combination design of customized steel formwork, channel steel secondary keel, triangular support frame and horizontally reinforcing square steel, as well as the firm connection of connectors, ensures the horizontal stability and overall structural strength of the entire formwork support device, thereby improving construction quality and safety.

[0016] 4. Easy to install and adjust: This device adopts a modular design, and all parts can be customized. It can be installed and assembled on site using hoisting methods, which facilitates quick on-site assembly and adjustment, reducing construction difficulty and labor requirements.

[0017] In summary, the single-sided support device and construction method for ultra-high exterior wall steel formwork provided by this invention effectively solves many problems in the prior art and improves construction efficiency and safety. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the single-sided support device for ultra-high exterior wall steel formwork described in this invention; Figure 2 This is a schematic diagram of the upper structure of the single-sided support device for ultra-high exterior wall steel formwork described in this invention; Figure 3 This is a schematic diagram of the lower structure of the single-sided support device for ultra-high exterior wall steel formwork described in this invention; Figure 4 This is a side view of the single-sided support device for ultra-high exterior wall steel formwork described in this invention; Figure 5 This is a schematic diagram of the connection node described in this invention; Figure 6 This is a schematic diagram of the lateral connection node described in this invention.

[0019] In the diagram: 1 - Customized steel formwork; 2 - Channel steel secondary keel; 3 - Triangular support frame; 4 - Horizontal reinforcing square steel; 5 - Support column; 6 - Connection node; 7 - Horizontal connection node; 101 - Long threaded rod; 102 - Nut; 601 - Protruding connector; 602 - Embedded concave connector; 603 - Pin; 701 - Concave connector; 702 - Connecting rod. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0021] The single-sided support device for ultra-high exterior wall steel formwork of the present invention includes an upper structure and a lower structure.

[0022] like Figure 1 , 2As shown in Figure 4, the upper structure includes a custom steel formwork 1, channel steel secondary keels 2, triangular support frames 3, and horizontally reinforcing square steel 4. The custom steel formwork 1 can be a single piece or assembled from multiple pieces. The custom steel formwork 1 is equipped with lifting lugs and is installed by hoisting in practical applications. Multiple channel steel secondary keels 2 are welded to the back of the custom steel formwork 1. The vertical right-angled sides of multiple triangular support frames 3 are welded to the channel steel secondary keels 2 and are evenly spaced. The horizontal right-angled sides of the triangular support frames 3 are bolted to the lower structure. The triangular support frames 3 are connected together by horizontally reinforcing square steel 4 to ensure their horizontal stability. The horizontally reinforcing square steel 4 is connected and fixed to the diagonal side of the triangular support frame 3 by long screws 101 and nuts 102.

[0023] like Figure 1 , 3 As shown, the lower structure includes multiple supporting columns 5, which are connected by transverse connecting nodes 7. The upper structure and the lower structure are connected by bolts. Specifically, the triangular support frame 3 of the upper structure is connected and fixed to the supporting columns 5 of the lower structure by bolts.

[0024] like Figure 3 , 6 As shown, the transverse connecting node 7 includes a concave connector 701 and a connecting rod 702. The concave connector 701 includes a connecting plate with two protrusions C, each with a pin mounting hole. The connecting rod 702 has protrusions D at both ends, each with a pin mounting hole. The connecting plate portion of the concave connector 701 is welded and fixed to the supporting column 5. The concave connectors 701 on two adjacent supporting columns 5 are connected by the connecting rod 702. Specifically, the protrusions D at both ends of the connecting rod 702 are inserted between the two protrusions C and fastened by pins 603 and matching fastening limiters, thereby achieving the connection between the supporting columns 5.

[0025] like Figure 1 , 2 As shown, the upper and lower structures work together for single-sided formwork of the first-floor wall, and the upper structure can also be used alone for single-sided formwork of the first-floor wall, and can be reused repeatedly.

[0026] like Figure 4 , 5As shown, the lower structure of the formwork support device is connected and fixed to the base plate and the first-floor wall through connection node 6. Connection node 6 includes a convex connector 601, a pre-embedded concave connector 602, and a pin 603. The convex connector 601 includes a connecting base plate with a protrusion A and a pin mounting hole. The pre-embedded concave connector 602 includes a screw rod with a connecting top plate. The connecting top plate has two protrusions B that match the protrusion A, and each of the protrusions B has a pin mounting hole. The screw rod of the pre-embedded concave connector 602 is pre-embedded in the base plate or the first-floor wall. The connecting base plate of the convex connector 601 is welded and fixed to the support column 5. When the support column 5 is connected to the base plate or the first-floor wall, the protrusion A is inserted between the two protrusions B and the connection is achieved by the pin 603 and the matching fastening limiter, thereby realizing the connection between the formwork support device and the base plate and the first-floor wall.

[0027] The convex connector 601, the pre-embedded concave connector 602, the concave connector 701, and the connecting rod 702 are all integrated structures.

[0028] The construction method of the single-sided formwork support device for ultra-high exterior wall steel formwork of the present invention includes the following process; S1: When constructing the first-floor walls and base slab, pre-embed the recessed connector 602 to ensure that the protruding connector 601 on the subsequent support column 5 is accurately connected and fixed to it. S2: Install and fix the support column 5, weld the protruding connector 601 to the bottom of the support column 5 and the side near the wall, and fix the protruding connector 601 to the pre-embedded concave connector 602 on the base plate and the wall with pins 603; weld the concave connector 701 to the side of the support column 5, and fix the connecting rod 702 between the concave connectors 701 with pins 603. S3: Install the superstructure. The superstructure is installed in place on the ground by hoisting. The customized steel formwork 1 can be installed as a whole or spliced ​​in multiple pieces according to the requirements. At the same time, the channel steel secondary keel 2 is installed and the triangular support frame 3 is connected by welding. All triangular support frames 3 are connected by horizontal reinforcing square steel 4 to enhance the overall structural strength of the superstructure. S4: Connect the upper structure to the lower structure, and use bolts to connect and fix the triangular support frame 3 to the lower support column 5 to ensure the integrity of the device.

[0029] The embodiments described above are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A single-sided support device for ultra-high exterior wall steel formwork, characterized in that, The structure includes an upper structure and a lower structure connected by bolts. The upper structure includes a custom steel template (1), on which multiple channel steel secondary keels (2) are welded to the back. Multiple triangular support frames (3) are connected to the channel steel secondary keels (2) by welding and are evenly spaced. The triangular support frames (3) are connected together by transverse reinforcing square steel (4), and the transverse reinforcing square steel (4) is connected to the triangular support frames (3) by bolts. The triangular support frames (3) are also connected to the lower structure by bolts. The lower structure includes multiple support columns (5), which are connected to each other by transverse connection nodes (7). The support columns (5) are connected to the base plate and the first floor wall by connection nodes (6).

2. The single-sided support device for ultra-high exterior wall steel formwork according to claim 1, characterized in that, The customized steel formwork (1) is either a single piece or made by splicing multiple pieces together, and the customized steel formwork (1) is equipped with lifting lugs.

3. The single-sided support device for ultra-high exterior wall steel formwork according to claim 1, characterized in that, The transverse reinforcing square steel (4) is connected and fixed to the hypotenuse of the triangular support frame (3) by a long screw (101) and a nut (102).

4. The single-sided support device for ultra-high exterior wall steel formwork according to claim 1, characterized in that, The upper and lower structures work together for single-sided formwork support of the first-floor wall, or the upper structure alone is used for single-sided formwork support of the first-floor wall.

5. The single-sided support device for ultra-high exterior wall steel formwork according to claim 1, characterized in that, The connecting node (6) includes a convex connector (601), a pre-embedded concave connector (602), and a pin (603). The convex connector (601) includes a connecting base plate, on which a protrusion A with a pin mounting hole is provided. The pre-embedded concave connector (602) includes a screw rod, on which a connecting top plate is provided. On the connecting top plate, two protrusions B that match the protrusion A and have pin mounting holes are provided. The screw rod part of the pre-embedded concave connector (602) is pre-embedded in the base plate or the first-floor wall. The connecting base plate part of the convex connector (601) is welded to the support column (5). When the support column (5) is connected to the base plate or the first-floor wall, the protrusion A is inserted between the two protrusions B and fixed by the pin (603).

6. The single-sided support device for ultra-high exterior wall steel formwork according to claim 1, characterized in that, The transverse connecting node (7) includes a concave connector (701) and a connecting rod (702); the concave connector (701) includes a connecting plate, on which two protrusions C with pin mounting holes are provided, and both ends of the connecting rod (702) are provided with protrusions D with pin mounting holes; the connecting plate part of the concave connector (701) is welded to the support column (5), and the concave connectors (701) on two adjacent support columns (5) are connected by the connecting rod (702), and the protrusions D at both ends of the connecting rod (702) are inserted between the two protrusions C and fixed by pins (603).

7. A construction method for a single-sided formwork support device for ultra-high exterior wall steel formwork as described in claim 5 or 6, characterized in that, The process includes the following: S1: When constructing the first-floor walls and floor slab, pre-embed recessed connectors (602). S2: Install and fix the support column (5), weld the protruding connector (601) to the bottom of the support column (5) and the side near the wall, and fix the protruding connector (601) to the pre-embedded concave connector (602) on the base plate and the wall with pins (603); weld the concave connector (701) to the side of the support column (5), and fix the connecting rod (702) between the concave connectors (701) with pins (603); S3: Install the superstructure. The superstructure is installed in place on the ground as a whole by hoisting. S4: Use bolts to connect and fix the triangular support frame (3) to the support column (5) to ensure the integrity of the device.

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