Wall single-side formwork supporting assembly

Abstract

The utility model discloses a wall unilateral formwork supporting assembly which comprises a pre-buried fixing steel bar, a fixing support and inclined supporting rods, the pre-buried fixing steel bar is vertically arranged on a raft foundation, the fixing support is bolted on the pre-buried fixing steel bar and is provided with three connectors which are sequentially raised from bottom to top, each connector is connected with one inclined supporting rod, and the inclined supporting rods are connected with the fixing support. The lower end of the inclined supporting rod is connected with the connector through a screw rod I, an upper limiting nut and a lower limiting nut are arranged on the screw rod I, a screw rod II is inserted into the upper end of the inclined supporting rod, a lower limiting nut is arranged on the screw rod II, the upper end of the screw rod II is located in the middle of the vertical main edges, and the screw rod II, the vertical main edges and the screw rod II are connected through bolts. The formwork is adjustable in length, flexible in construction, easy to assemble, capable of being supported by a single person, capable of accurately adjusting the position of the formwork, good in formwork reinforcing stability and safe and reliable in construction quality. Meanwhile, supporting legs with different angles can be selected according to different distances, and the device can be suitable for narrow working faces.

Description

Technical Field

[0001] This utility model belongs to the field of building construction technology, and specifically relates to a single-sided formwork support component for walls. Background Technology

[0002] Currently, in the construction of the basement exterior walls of building main structures, due to site constraints and the close proximity of the foundation pit support and exterior wall structure, there is insufficient space for formwork on the outer side of the exterior wall, resulting in single-sided formwork support only on the inner side. A traditional method for single-sided formwork support involves using a triangular truss brace made of welded steel sections to support the back brace and formwork. The corner supports are fixed to the raft slab, and the triangular truss brace relies on its own weight and supporting force to support the back brace and formwork. Installation and dismantling require 2-3 people working together, and heavier structures require mechanical hoisting. Furthermore, the triangular truss brace is affected by site conditions and pre-embedded positioning; because the triangular truss structure is not adjustable, installation is either impossible or difficult, resulting in poor construction flexibility. This structure is suitable for open site conditions, requires customization before construction, and is costly. Another construction method involves using multiple steel pipes to be diagonally supported on the concrete raft slab, with the other end using top screws to be diagonally supported on the back rib of the formwork to achieve the purpose of jacking back. This method uses readily available materials, is relatively flexible in its support, can be operated by a single person, and is somewhat arbitrary in its support, with no standard practice and poor stability. Although it is applicable to any working condition, the safety and reliability of this method cannot be guaranteed, and there are potential safety hazards. Utility Model Content

[0003] This utility model provides a single-sided wall formwork support component to solve the technical problems existing in the prior art. It can be erected by a single person, the length can be adjusted according to the site, the support stability is good, it is safe and reliable, the materials are readily available, the cost is low, and it can be used in small spaces.

[0004] The technical solution adopted by this utility model to solve the technical problems existing in the prior art is as follows: a single-sided formwork support assembly for a wall, wherein the back of the formwork is provided with a horizontal secondary rib, and a vertical main rib is provided behind the horizontal secondary rib. The vertical main ribs are arranged in groups of two and connected by steel strips. The support assembly includes pre-embedded fixed steel bars, fixed supports, and diagonal braces. The pre-embedded fixed steel bars are vertically arranged on the raft foundation. The fixed supports are bolted to the pre-embedded fixed steel bars. There are three joints that rise sequentially from bottom to top. Each joint is connected to a diagonal brace. The lower end of the diagonal brace is connected to the joint through a screw rod I. The screw rod I is provided with two limiting nuts. The upper end of the diagonal brace is inserted into a screw rod II. The screw rod II is provided with a lower limiting nut. The upper end of the screw rod II is located in the middle of a group of vertical main ribs. The three are connected by a pin.

[0005] The fixed support is provided with a support part and a connecting part. The support part adopts a right-angled triangle structure, with one right-angled side touching the ground and being bolted to the pre-embedded fixed steel bar, and the other right-angled side being set vertically and facing away from the template. The connecting part consists of three joints that rise sequentially from bottom to top, and the lower end of the joints is fixedly connected to the back of the vertical side of the support part.

[0006] The three connectors, which rise sequentially from bottom to top, are a lower connector, a middle connector, and an upper connector. The lower connector has an inclination angle of 15–30°, the middle connector has an inclination angle of 30–45°, and the upper connector has an inclination angle of 45–60°.

[0007] Both screw rod I and screw rod II are hollow structures.

[0008] The support is made of rectangular tubing welded together.

[0009] The advantages and positive effects of this utility model are as follows: The two ends of the diagonal brace are connected to the fixed end and the vertical main rib by screw rods with limiting nuts, respectively. The length is adjustable, construction is flexible, assembly is easy, and a single person can set it up. The formwork position can be precisely adjusted, the formwork reinforcement has good stability, and the construction quality is safe and reliable. At the same time, different angles of the outriggers can be selected according to different distances, making it suitable for narrow working surfaces. Furthermore, this utility model has a simple structure, readily available materials, low cost, is detachable, and is applicable to all working conditions. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a top view of the vertical main beam of this utility model;

[0012] Figure 3 This is a front view of the vertical main beam of this utility model;

[0013] Figure 4 This is a side view of the vertical main beam of this utility model;

[0014] Figure 5 This is a schematic diagram of the structure of the small-angle fixed support of this utility model;

[0015] Figure 6 for Figure 5 Top view;

[0016] Figure 7 This is a structural schematic diagram of the large-angle fixed support of this utility model;

[0017] Figure 8 for Figure 7 Top view.

[0018] In the diagram: 1-Embedded fixing steel bar; 2-Fixed support; 2.1-Lower joint; 2.2-Intermediate joint; 2.3-Upper joint; 3.1-Screw rod I; 3.2-Limiting nut; 4-Diagonal brace; 5.1-Screw rod II; 5.2-Lower limit nut; 6-Pin; 7-Vertical main rib; 8-Pin hole; 9-Steel strip; 10-Horizontal secondary rib; 11-Formwork; 12-Positioning bar; 13-Limiting inner support strip; 14-External wall steel bar; 15-Mortar waterproof protective layer; 16-Waterproof membrane; 17-Leveling mortar layer; 18-Support pile and shotcrete. Detailed Implementation

[0019] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0020] Please see Figures 1 to 8 A single-sided wall formwork support assembly, wherein the back of the formwork 11 is provided with a horizontal secondary rib 10, and a vertical main rib 7 is provided behind the horizontal secondary rib 10. The vertical main ribs 7 are arranged in groups of two, connected by steel strips 9. Multiple evenly distributed pin holes 8 are provided on the vertical main ribs 7 from top to bottom.

[0021] The support assembly includes a pre-embedded fixed steel bar 1, a fixed support 2, and a diagonal brace 4.

[0022] The pre-embedded fixing steel bar 1 is vertically set on the raft foundation.

[0023] The fixed support 2 has three joints that rise sequentially from bottom to top. Each joint is connected to a diagonal brace 4. The lower end of the diagonal brace 4 is connected to the joint via a screw rod I 3.1. The screw rod I 3.1 is provided with two limiting nuts 3.2. The upper end of the diagonal brace 4 is inserted with a screw rod II 5.1. The screw rod II 5.1 is provided with a lower limiting nut 5.2. The upper end of the screw rod II 5.1 is located in the middle of a set of vertical main ribs 7. The three are connected by a pin 6.

[0024] The more preferred solution in this embodiment is as follows:

[0025] Please see Figures 5-8 The fixed support 2 is provided with a support part and a connecting part. The support part adopts a right-angled triangle structure, with one right-angled side touching the ground and being bolted to the pre-embedded fixed steel bar 1, and the other right-angled side being set vertically, facing away from the template 11. The connecting part consists of three joints that rise sequentially from bottom to top. The lower end of the joint is fixedly connected to the back of the vertical side of the support part, making the structure stable and reliable.

[0026] The three joints, arranged from bottom to top, are the lower joint 2.1, the middle joint 2.2, and the upper joint 2.3. The lower joint 2.1 has an inclination angle of 15-30°, the middle joint 2.2 has an inclination angle of 30-45°, and the upper joint 2.3 has an inclination angle of 45-60° to accommodate sites with different bandwidths. For sites with a short distance between the inner plane of the outer wall and a pre-embedded position at half the wall height, a large-angle fixed support is selected. For sites with a long distance between the inner plane of the outer wall and a pre-embedded position at the wall height, a small-angle fixed support is selected.

[0027] Both screw rod I 3.1 and screw rod II 5.1 are hollow structures, which are lightweight and easy to install.

[0028] The support is made of rectangular tubes welded together, which has good stability and is easy to manufacture.

[0029] Construction method of this utility model:

[0030] Step 1: Before pouring the raft foundation, set up pre-embedded fixing steel bars 1 according to the wall height, and then determine the size of the fixing support 2 according to the support distance. If the distance between the inner plane of the outer wall is short and the pre-embedded position is half the wall height, select a large-angle fixing support. If the distance between the inner plane of the outer wall is long and the pre-embedded position is the wall height, select a small-angle fixing support.

[0031] The pre-embedded fixing steel bar 1 is used to fix the position of the fixing support 2. The pre-embedded fixing steel bar 1 and the fixing support 2 form a fixed limiting end. The fixing support 2 is made of square steel welded together. The back is fixed with joints of different angles. The joints are made of steel pipes. The inclination angle of the joint is determined according to the size of the working surface. If the working surface is wide, a small angle joint is selected. If the working surface is small, a large angle joint is selected.

[0032] Step 2: Construct the leveling mortar layer 17 on the retaining structure surface on the support piles and shotcrete 18.

[0033] Step 3: After the leveling mortar layer 17 is completed, gradually install the waterproof membrane 16, the mortar waterproof protective layer 15, and the external wall steel reinforcement 14.

[0034] Step 4: Install positioning bars 12 and limiting inner bracing bars 13 on the inner side of the outer wall to restrict the inward displacement of the formwork.

[0035] Step 5: Fix the transverse secondary rib 10 and template 11 into a whole and install them close to the limiting inner support strip 13.

[0036] Step 6: Assemble screw rod I3, diagonal brace 4, and screw rod II5 together, and connect them to the vertical main rib 7 using pin 6, so that the vertical main rib 7 is vertical and in contact with the horizontal secondary rib 10. Diagonal brace 4 is readily available on site.

[0037] Step 7: Adjust the limit nut 3.2 on the screw rod I3 to tighten the vertical main rib 7 and the horizontal secondary rib 10.

[0038] Step 8: Fine-tune the lower limit nut 5.2 to make the vertical main rib 7 vertical. At this time, the diagonal brace 4 provides effective support for the template 11.

[0039] Step 9: Repeat steps 6 to 8 to complete the installation one by one. After acceptance, pour concrete.

[0040] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and these all fall within the protection scope of the present invention.

Claims

1. A single-sided wall formwork support assembly, wherein the back of the formwork is provided with horizontal secondary ribs, and a vertical main rib is provided behind the horizontal secondary ribs, the vertical main ribs being arranged in groups of two and connected by steel strips. Its features are, The support assembly includes pre-embedded fixed steel bars, fixed supports, and diagonal braces. The pre-embedded fixing steel bars are vertically installed on the raft foundation. The fixed support is bolted to the pre-embedded fixed steel bar and has three joints that rise sequentially from bottom to top. Each joint is connected to a diagonal brace. The lower end of the diagonal brace is connected to the joint via a screw rod I. The screw rod I has two limiting nuts, one above the other. The upper end of the diagonal brace is inserted with a screw rod II, which has a lower limiting nut. The upper end of the screw rod II is located in the middle of a set of vertical main ribs. The three are connected by a pin.

2. The wall single-sided formwork support assembly according to claim 1, characterized in that, The fixed support is provided with a support part and a connecting part. The support part adopts a right-angled triangle structure, with one right-angled side touching the ground and being bolted to the pre-embedded fixed steel bar, and the other right-angled side being set vertically and facing away from the template. The connecting part consists of three joints that rise sequentially from bottom to top, and the lower end of the joints is fixedly connected to the back of the vertical side of the support part.

3. The wall single-sided formwork support assembly according to claim 1, characterized in that, The three connectors, which rise sequentially from bottom to top, are a lower connector, a middle connector, and an upper connector. The lower connector has an inclination angle of 15–30°, the middle connector has an inclination angle of 30–45°, and the upper connector has an inclination angle of 45–60°.

4. The wall single-sided formwork support assembly according to claim 1, characterized in that, Both screw rod I and screw rod II are hollow structures.

5. The wall single-sided formwork support assembly according to claim 2, characterized in that, The support is made of rectangular tubing welded together.

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