Safety protection device for full-scale test of suspended formwork system

Abstract

The utility model discloses a safety protection device for a full-scale test of a suspended formwork system, which relates to the technical field of formwork engineering construction and comprises a plurality of back shore components, a sand box component with a rectangular structure is arranged outside the back shore components in a surrounding manner, and the sand box component comprises a plurality of sand box single bodies. Every two horizontally adjacent sand box single bodies on the side edge are fixedly connected through a connecting piece, and every two vertically adjacent sand box single bodies on the corner are fixedly connected through a bevel connecting plate and a connecting piece. By adopting the safety protection device for the full-scale test of the suspended formwork system, when a structure or a device in the test encounters an emergency situation of failure or even damage, the device can quickly provide sufficient buffer protection for parts which possibly fall, so that safety threats to testers and the surrounding environment are effectively avoided, and the safety of the test personnel is ensured. And the overall safety of the test is obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of formwork engineering construction technology, and in particular to a safety protection device for full-scale testing of suspended formwork systems. Background Technology

[0002] In formwork engineering, when faced with limited ground space or insufficient foundation bearing capacity, suspended formwork technology can be used for concrete pouring without relying on a ground support system. The suspended formwork system includes main beams, secondary beams, hangers, main joists, secondary joists, and formwork components. The formwork and main and secondary joists directly bear the weight of the cast-in-place reinforced concrete, construction equipment, and personnel. These loads are transferred to the main and secondary beams through the hangers and ultimately distributed to the supports or surrounding load-bearing structures.

[0003] However, current standards for the selection and design of suspended formwork systems are not yet perfect, making stress performance analysis of the suspended formwork system particularly important when designing a suspended formwork scheme. Especially in high-risk concrete engineering projects, mechanical calculations alone are insufficient to fully assess the safety and stability of the suspended formwork system. Therefore, it is necessary to conduct full-scale tests of the suspended formwork system in conjunction with the on-site construction plan, aiming to directly verify its performance in practical applications. Full-scale tests of suspended formwork systems cover loading and unloading phases, involving significant loads. To ensure the safe conduct of the tests, a complete set of safety protection devices for full-scale testing is crucial. Utility Model Content

[0004] The purpose of this invention is to provide a safety protection device for full-scale testing of suspended formwork systems, which solves the problem that mechanical calculations alone are insufficient to fully assess the safety and stability of suspended formwork systems. It combines on-site construction plans to carry out full-scale testing of suspended formwork systems and ensures that the full-scale testing of suspended formwork systems can be conducted safely.

[0005] To achieve the above objectives, this utility model provides a safety protection device for full-scale testing of a suspended mold system, including several top support components. A rectangular sand box assembly is provided around the outside of the several top support components. The sand box assembly includes several individual sand boxes. Two horizontally adjacent sand box units on the side are fixedly connected by connectors, and two vertically adjacent sand box units at the corners are fixedly connected by a corner connecting plate and the connectors.

[0006] Preferably, the top support assembly includes an electric hydraulic cylinder, and a conical rubber pad is fixedly provided at the upper end of the electric hydraulic cylinder, and a rubber dust cover is provided on the outside of the conical rubber pad.

[0007] Preferably, the sand box unit includes a pressure plate, a transverse back rib is fixedly connected to the upper part of the pressure plate, side connecting plates are fixedly connected to both sides of the pressure plate, a partition is fixedly installed in the middle of the pressure plate, the two ends of the partition are fixedly connected to the side connecting plates, and a bottom plate is fixedly connected to the bottom of the pressure plate.

[0008] Preferably, a plurality of corner braces are provided between the base plate and the bearing plate, and all of the corner braces are configured as triangular structures.

[0009] Preferably, the side connecting plate has several through holes, and the connector passes through two of the interconnected through holes to fix the two side connecting plates together.

[0010] Preferably, the corner connecting plate has two rows of through holes, and the connector passes through the two through holes and the first through hole to fix the corner connecting plate and the side connecting plate.

[0011] Therefore, this utility model employs the aforementioned safety protection device for full-scale testing of a suspended formwork system. In emergency situations where the structure or device during testing encounters failure or even damage, this device can quickly provide sufficient buffer protection for potentially falling components, effectively avoiding safety threats to testing personnel and the surrounding environment, and significantly improving the overall safety of the test. Furthermore, this device can provide temporary support for the test load during operation by the testing personnel.

[0012] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment of a safety protection device for full-scale testing of a suspended mold system according to this utility model;

[0014] Figure 2 This is a structural schematic diagram of a sand box unit of a full-scale test safety protection device for a suspended mold system according to this utility model;

[0015] Figure 3 This is a schematic diagram of the angled connecting plate of a full-scale test safety protection device for a suspended mold system according to this utility model;

[0016] Figure 4 This is a schematic diagram of the top support component of a full-scale test safety protection device for a suspended mold system according to this utility model;

[0017] Figure 5 This is a schematic diagram of the connection between adjacent sandbox units of a full-scale test safety protection device for a suspended mold system according to this utility model. Figure 1 ;

[0018] Figure 6 This is a schematic diagram of the connection between adjacent sandbox units of a full-scale test safety protection device for a suspended mold system according to this utility model. Figure 2 ;

[0019] Figure 7 This is an assembly drawing of the test suspension system and safety protection device, representing an embodiment of the full-scale test safety protection device for a suspension system according to this utility model.

[0020] Reference numerals: 1. Top support assembly; 11. Electric hydraulic cylinder; 12. Conical rubber pad; 13. Rubber dust cover; 2. Sand box assembly; 3. Sand box unit; 31. Pressure plate; 32. Transverse back rib; 33. Side connecting plate; 331. Through hole one; 34. Partition plate; 35. Base plate; 36. Angle brace plate; 4. Connector; 5. Angle connecting plate; 51. Through hole two; 6. Test hanging mold system. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] Example

[0024] See also Figure 1-7 This utility model provides a safety protection device for full-scale testing of a suspended mold system, including several top support components 1. A rectangular sand box assembly 2 surrounds the top support components 1. The sand box assembly 2 includes several individual sand box units 3, which are made of aluminum profiles or welded steel plates. Two horizontally adjacent sand box units 3 on the sides are fixedly connected by connectors 4, and two vertically adjacent sand box units 3 at corners are fixedly connected by corner connecting plates 5 and connectors 4. In this embodiment, the connector 4 is a pin.

[0025] like Figure 2As shown, the sand box unit 3 includes a pressure plate 31. A transverse back rib 32 is fixedly connected to the upper part of the pressure plate 31. Side connecting plates 33 are fixedly connected to both sides of the pressure plate 31. Several through holes 331 are opened on the side connecting plates 33. Connectors 4 pass through two interconnected through holes 441 to fix the two side connecting plates 33 together. A partition 34 is fixedly installed in the middle of the pressure plate 31. The two ends of the partition 34 are fixedly connected to the side connecting plates 33. A bottom plate 35 is fixedly connected to the bottom of the pressure plate 31. Multiple corner bracing plates 36 are provided between the bottom plate 35 and the pressure plate 31. The multiple corner bracing plates 36 are all set in a triangular structure. After assembly, the sand box unit 3 is filled with sand. The width (DW1) of the bottom plate 35 of the sand box unit 3 should be greater than the width (DW2) of the side connecting plates 33. The length (DL) of the sand box unit 3 can be selected according to a certain module (300mm, 500mm, etc.).

[0026] like Figure 3 As shown, the angle connecting plate 5 is made of aluminum profile or cold-bent steel plate. The height (BH) of the angle connecting plate 5 is the same as the height (DH) of the sand box unit 3, and the length (BL) of the two limbs of the angle connecting plate 5 is the same as the width (DW2) of the side connecting plate 33 of the sand box unit 3. Two rows of through holes 51 are provided on the two limbs of the angle connecting plate 5. The connector 4 passes through the connected through holes 51 and through holes 331 to fix the angle connecting plate 5 and the side connecting plate 33. The diameter and position of the through holes 51 should correspond one-to-one with the through holes 331 on the side connecting plate 33.

[0027] like Figure 4 As shown, the top support assembly 1 includes an electric hydraulic cylinder 11. A conical rubber pad 12 is fixedly installed at the upper end of the electric hydraulic cylinder 11, and a rubber dust cover 13 is installed on the outside of the conical rubber pad 12. When the lifting rod of the electric hydraulic cylinder 11 pushes out of the sand surface, the conical rubber pad 12 can prevent sand from accumulating on its top, and the rubber dust cover 13 can prevent damage to the cylinder caused by sand particles entering the gap of the lifting rod.

[0028] This embodiment describes a cast-in-place station slab in a tunnel-excavated station project, which is a non-load-bearing structure closely attached to the upper part of an existing railway line section. Since it is not possible to erect a full-span scaffold for formwork assembly and concrete pouring, a suspended formwork method is required for the construction of the station slab. As this construction node is a high-risk project, in order to verify the reliability of the suspended formwork design scheme, a full-scale test of the suspended formwork system was carried out. The test suspended formwork system 6 has a formwork length and width of 4.2m × 3.2m.

[0029] The full-scale test safety protection device of the suspended mold system used in this embodiment has dimensions of 5m × 4m. The length (DL) module of the sand box unit 3 is 500mm, the height (DH) is 400mm, and it is made of welded steel plate with a pin hole diameter of 20mm. The angle connecting plate 5 is made of cold-formed steel plate. The width (DW2) of the side connecting plate 33 is 75mm, the width (DW1) of the bottom plate 35 is 150mm, and the diameters of the through holes 331 and 51 are both 75mm. The height (BH) of the angle connecting plate 5 is 400mm, and the length of its two limbs (BL) is 75mm.

[0030] (1) The installation steps of the device are as follows:

[0031] The first step is to determine the required number of sand box units 3 based on the maximum outer dimension of the test hanging mold system 6 and the module of the sand box unit 3, and then determine the length and width dimensions of the sand box unit 3 based on the required number of sand box units 3. The length and width dimensions of the sand box unit 3 should be slightly larger than the maximum outer dimension of the test hanging mold system 6.

[0032] The second step involves using surveying and layout to determine the position of the sand box unit 3 on a ground with a certain load-bearing capacity (such as a hardened concrete surface). The sand box units 3 are then placed according to the surveying and layout lines. Adjacent sand box units 3 and the angled connecting plate 5 are connected using pins. Figure 5 , Figure 6 As shown.

[0033] The third step is to place the top support assembly 1 inside the sand box unit 3. It should be ensured that the top support assembly 1 is evenly distributed at the center, each vertex, and the bottom of each side of the test hanging mold template. After the device is installed, fill the sand box unit 3 with sand, and the surface of the sand is higher than the top surface of the electric hydraulic cylinder 11.

[0034] (2) The experimental operation method and steps are as follows:

[0035] ① Installation stage of the test suspended formwork system: The lower structure (main ribs, secondary ribs, formwork, etc.) of the test suspended formwork system 6 is installed on the sandy surface, such as... Figure 7 As shown, the lower end of the suspension rod is connected to the lower template system according to the design scheme of the suspended formwork system. The lower template system of the test suspended formwork system 6 is lifted to a certain height above the sand surface using an electric hydraulic cylinder 11. The upper structure of the test suspended formwork system 6 is connected according to the design scheme of the suspended formwork system (not shown in the figure), and the upper structure is fixed to the full-scale test device of the suspended formwork system according to the test scheme.

[0036] ② Loading stage: Before loading, the push rod of the electric hydraulic cylinder 11 should be pushed to the bottom of the template. After loading is completed, the test personnel should retreat to a safe area, operate the electric hydraulic cylinder 11 to retract the push rod, so that the test hanging mold system 6 is suspended in the air, and record the reading after the position sensor reading stabilizes.

[0037] ③Unloading stage: Operate the electric hydraulic cylinder 11 to continuously raise the top rod and bear the weight of the lower structure of the test formwork system 6 and the weight of the poured concrete, so as to relieve the main and secondary beams. Remove the connection between the top of the top rod and the secondary beam, and then remove the other components of the test formwork system 6 and the test reinforced concrete components.

[0038] Therefore, this utility model employs the aforementioned safety protection device for full-scale testing of a suspended formwork system. In emergency situations where the structure or device during testing encounters failure or even damage, this device can quickly provide sufficient buffer protection for potentially falling components, effectively avoiding safety threats to testing personnel and the surrounding environment, and significantly improving the overall safety of the test. Furthermore, this device can provide temporary support for the test load during operation by the testing personnel.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A safety protection device for full-scale testing of a suspended mold system, characterized in that: It includes several top support components, and a rectangular sand box assembly is provided around the outside of the several top support components. The sand box assembly includes several individual sand box units. Two sand box units that are horizontally adjacent on the side are fixedly connected by a connector, and two sand box units that are vertically adjacent at the corner are fixedly connected by a corner connecting plate and the connector.

2. The safety protection device for full-scale testing of a suspended mold system according to claim 1, characterized in that: The top support assembly includes an electric hydraulic cylinder, and a conical rubber pad is fixedly installed at the upper end of the electric hydraulic cylinder. A rubber dust cover is installed on the outside of the conical rubber pad.

3. The safety protection device for full-scale testing of a suspended mold system according to claim 2, characterized in that: The sand box unit includes a pressure plate, a transverse back rib is fixedly connected to the upper part of the pressure plate, side connecting plates are fixedly connected to both sides of the pressure plate, a partition is fixedly installed in the middle of the pressure plate, the two ends of the partition are fixedly connected to the side connecting plates, and a bottom plate is fixedly connected to the bottom of the pressure plate.

4. The safety protection device for full-scale testing of a suspended mold system according to claim 3, characterized in that: Multiple corner braces are provided between the base plate and the bearing plate, and all of the corner braces are configured as triangular structures.

5. A safety protection device for full-scale testing of a suspended mold system according to claim 4, characterized in that: The side connecting plate has several through holes, and the connector passes through two of the through holes to fix the two side connecting plates together.

6. A safety protection device for full-scale testing of a suspended mold system according to claim 5, characterized in that: The angle connecting plate has two rows of through holes. The connector passes through the two through holes and the first through hole to fix the angle connecting plate and the side connecting plate.

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