Reaction wall formwork reinforcing structure
Through the combination of components such as pull rods and back corrugated components, the problem of load impact on the reaction wall formwork when pouring concrete is solved, the high-precision installation of the load hole module and the stability of the formwork is achieved, and the height of the reaction wall is ensured. Accuracy of construction and test data.
Patent Information
- Application Number
- CN202421123399.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-22
AI Technical Summary
When pouring concrete, the reaction wall formwork is susceptible to external load due to the poor stiffness and stability of the load hole module, resulting in a decrease in the accuracy of the load hole pre-embedding, affecting the accuracy of the test data.
The pull rod member, positioning plug, multi-layer plywood, vertical back, horizontal back and fastening steel plate and other components are used to penetrate the central hole of the load hole module and tighten it through the nut and back to ensure that the template and The stable connection of the wall reduces the impact of external load on accuracy.
It effectively improves the installation accuracy of the loading hole module and the strength of the template, ensures high-precision construction of the reaction wall, and improves the reliability and safety of the test data.
Smart Images
Figure CN222314575U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reaction wall formwork installation and construction in the field of construction, in particular to a reaction wall formwork reinforcement structure. Background Art
[0002] Reaction walls and reaction pedestals are important facilities in seismic laboratories for quasi-static or quasi-dynamic tests of various structural components and structural systems. Many loading holes are embedded in the concrete structure of reaction walls and reaction pedestals to fix test instruments and equipment. The embedded loading holes must have extremely high accuracy (designed to be millimeter-level) in terms of installation positioning, verticality, and flatness of the loading hole end plates to ensure that relevant instruments and equipment are accurately installed and test data is accurate during the test.
[0003] The loading holes of the reaction wall are pre-buried and installed before concrete pouring, and the loading holes are formed on the wall after concrete pouring. During the construction process, the reaction wall formwork uses a water-coated multi-layer board, the formwork is close to the loading hole end plate, the loading hole is used as the inner support of the wall board formwork, and the tension screw passing through the loading hole is used as the outer pull of the wall formwork to achieve the reinforcement of the reaction wall formwork.
[0004] Since the lower part of the loading hole module bracket in the reaction wall is fixed in the concrete and the upper part is free in a cantilever state, its own rigidity and stability are poor. After the formwork is set up, the loading hole and the reaction wall formwork become an integral whole. When pouring concrete, it is affected by external loads and the loading hole module is easily disturbed, which directly affects the accuracy of the pre-embedded loading hole. Utility Model Content
[0005] The purpose of the utility model is to remedy the defects of the prior art and provide a reaction wall formwork reinforcement structure to eliminate the conventional practice, that is, after the loading hole module is installed, when the reaction wall formwork is supported and the reaction wall concrete is poured, the influence of external loads on the accuracy of the loading hole module is eliminated, so as to meet the accuracy of the pre-embedded loading holes of the reaction wall and the strength of the formwork.
[0006] The utility model is realized by the following technical solutions:
[0007] A reaction wall formwork reinforcement structure includes a tie rod, a loading hole module and a multi-layer plywood, the tie rod passes through the central hole of the loading hole module, and the two ends of the tie rod pass through the loading hole module respectively, and positioning plugs are respectively provided at the two ends of the loading hole module, and nuts are screwed into the outer sides of the two positioning plugs on the tie rod, and the nuts are tightened after they are pressed against the positioning plugs; the two ends of the tie rod pass through the multi-layer plywood respectively, and the board surface of the multi-layer plywood is tightly attached to the end plates at the two ends of the loading hole module, and vertical back ribs, horizontal back ribs and fastening steel plates are sequentially installed on the back side of the multi-layer plywood on the tie rod, and nuts are provided on the outer side of the fastening steel plate on the tie rod, and nuts are tightened after they are pressed against the fastening steel plate.
[0008] The rear end of the tie rod is fixedly connected to the fixed wall through a connecting rod, and the connecting rod and the tie rod are connected through an internal threaded sleeve.
[0009] The tie rod is a rod with externally threaded threads at both ends, and the diameter of the tie rod is smaller than the central hole diameter of the loading hole module.
[0010] The vertical back ribs are vertical reinforcement components behind the reaction wall formwork, and are closely attached to the back of the multi-layer plywood; the horizontal back ribs are horizontal reinforcement components of the reaction wall formwork, and are closely attached to the vertical back ribs.
[0011] The fastening steel plate is a square component formed by cutting and processing a steel plate. A circular hole is arranged at the center of the fastening steel plate, and the hole diameter matches the diameter of the tension rod. The steel plate presses the horizontal back rib.
[0012] The positioning plug is a component made of round steel, and is provided with an inner circle, the hole diameter of the inner circle matches the diameter of the tie rod.
[0013] The advantages of the utility model are: after the reaction wall formwork and the loading hole module are fixed by using tension rods, back ribs, fastening steel plates, nuts, etc., the utility model is connected to another rod through a sleeve and fixed on the built concrete wall, thereby realizing the fixation of the reaction wall formwork. It technically solves the usual practice, that is, after the loading hole module is installed, when supporting the reaction wall formwork and pouring the reaction wall concrete, the influence of external loads on the accuracy of the loading hole module is met, the accuracy of the pre-embedded loading holes of the reaction wall and the strength of the formwork are met, the quality is guaranteed, and it is safe and reliable, providing a new process technology for the high-precision construction of the reaction wall. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a side view of the reaction wall formwork reinforcement structure of the utility model.
[0015] Figure 2 It is a large-scale drawing of the reaction wall formwork reinforcement structure of the utility model.
[0016] Figure 3 It is an axonometric drawing of a positioning plug of a reaction wall formwork reinforcement structure of the utility model.
[0017] Figure 4 It is a plan view of the fastening steel plate of the reaction wall formwork reinforcement structure of the utility model.
[0018] The numbers in the figure are: 1. tension rod, 2. positioning plug, 3. nut one, 4. fastening steel plate, 5. horizontal back rib, 6. vertical back rib, 7. multi-layer plywood, 8. loading hole module, 9. fixed wall, 10. nut two, 11. connecting rod, 12. internal threaded sleeve. DETAILED DESCRIPTION
[0019] like Figure 1 , 2 As shown, a reaction wall formwork reinforcement structure includes a tie rod 1, a loading hole module 8 and a multi-layer plywood 7, the tie rod 1 passes through the central hole of the loading hole module 8, and the two ends of the tie rod 1 pass through the loading hole module 8 respectively, and positioning plugs 2 are respectively provided at the two ends of the loading hole module 8, and nuts 3 are screwed into the outer sides of the two positioning plugs 2 on the tie rod 1, and the nuts 3 are tightened after resisting the positioning plugs 2; the two ends of the tie rod 1 pass through the multi-layer plywood 7 respectively, and the board surface of the multi-layer plywood 7 is tightly attached to the end plates at the two ends of the loading hole module 8, and the vertical back ribs 6, the horizontal back ribs 5 and the fastening steel plate 4 are sequentially installed on the back side of the multi-layer plywood 7 on the tie rod 1, and nuts 10 are provided on the outer side of the fastening steel plate 4 on the tie rod 1, and the nuts 10 are tightened after resisting the fastening steel plate 4.
[0020] The rear end of the tie rod 1 is fixedly connected to the fixed wall 9 via a connecting rod 11 , and the connecting rod 11 and the tie rod 1 are connected via an internal threaded sleeve 12 .
[0021] The tie rod 1 is a rod with externally threaded threads at both ends, and the diameter of the tie rod 1 is smaller than the central hole diameter of the loading hole module 8 .
[0022] The vertical back ribs 6 are vertical reinforcement components behind the reaction wall formwork, and are closely attached to the back of the multilayer plywood 7 ; the horizontal back ribs 5 are horizontal reinforcement components of the reaction wall formwork, and are closely attached to the vertical back ribs 6 .
[0023] like Figure 4 As shown, the fastening steel plate 4 is a square component cut from a steel plate. A circular hole is provided in the center of the fastening steel plate 4, and the hole diameter matches the diameter of the tension rod. The steel plate presses the horizontal back rib.
[0024] like Figure 3 As shown, the positioning plug 2 is a component made of round steel, and the positioning plug 2 is provided with an inner circle, and the inner circle hole diameter matches the diameter of the tension rod.
[0025] The multi-layer plywood 7 is a commercially available film-coated board, and its strength, rigidity and surface meet the requirements of plain concrete.
[0026] The tie rod is 60mm in diameter, 10mm thick steel pipe, and 1500mm in length; the positioning plug is inserted into the loading hole with an outer diameter of 80mm on one side and an outer diameter of 90mm on the other side, an inner diameter of 60mm, and a thickness of 45mm; the nut is 60mm in diameter and 12mm in thickness. The multi-layer plywood is 18mm film-faced board. The horizontal back ribs and vertical back ribs are 40mm×40mm×2mm square steel. The fastening steel plate is 200mm×200mm×18mm, and the center hole diameter is 65mm.
[0027] The above dimensions are for reaction wall thickness of 900mm and loading hole inner diameter of 80mm. If the reaction wall thickness or loading hole length and hole diameter are different, the above dimensions should be adjusted appropriately.
[0028] Specific construction steps:
[0029] 1. Connect and install the tie rod 1 and the loading hole module 8
[0030] After the loading hole module 8 is installed and accepted, the tie rod 1 passes through the loading hole module 8, positioning plugs 2 are set at both ends of the loading hole module 8, and nuts 3 are tightened against the positioning plugs 2 to make the loading hole module 8 and the tie rod 1 tightly integrated.
[0031] 2. Connect and install the tie rod 1 and the concrete fixed wall 9
[0032] The rear end of the tie rod 1 is provided with an internal threaded sleeve 12, and is connected to another connecting rod fixed on the built fixed wall 9. Usually, each loading hole module 8 is fixed with four tie rods 1.
[0033] 3. Connect and install the tie rod 1 to the formwork system
[0034] When installing the formwork, the multi-layer plywood surface 7 is close to the end plate of the loading hole module, and the horizontal back ribs 6 and the vertical back ribs 5 are installed on the back of the multi-layer plywood 7. After the fastening steel plate 4 passes through the tie rod 1, the nut 10 is screwed into the thread of the tie rod 1 to fasten the horizontal back ribs 6 and the vertical back ribs 5 to complete the installation of the reaction wall formwork.
Claims
1. A reaction wall formwork reinforcement structure, characterized in that: It includes a tie rod, a loading hole module and a multi-layer plywood. The tie rod passes through the central hole of the loading hole module, and the two ends of the tie rod pass through the loading hole module respectively. Positioning plugs are respectively provided at the two ends of the loading hole module. Nuts are screwed into the outer sides of the two positioning plugs on the tie rod respectively, and the nuts are tightened after they are pressed against the positioning plugs; the two ends of the tie rod pass through the multi-layer plywood respectively, and the board surface of the multi-layer plywood is tightly attached to the end plates at the two ends of the loading hole module. Vertical back ribs, horizontal back ribs and fastening steel plates are installed in sequence on the back side of the multi-layer plywood on the tie rod, and nuts are provided on the outer side of the fastening steel plate on the tie rod. Nuts are tightened after they are pressed against the fastening steel plate.
2. A reaction wall formwork reinforcement structure according to claim 1, characterized in that: The rear end of the tie rod is fixedly connected to the fixed wall through a connecting rod, and the connecting rod and the tie rod are connected through an internal threaded sleeve.
3. The reaction wall formwork reinforcement structure according to claim 1, characterized in that: The tie rod is a rod with externally threaded threads at both ends, and the diameter of the tie rod is smaller than the central hole diameter of the loading hole module.
4. The reaction wall formwork reinforcement structure according to claim 1, characterized in that: The vertical back ribs are vertical reinforcement components behind the reaction wall formwork, and are closely attached to the back of the multi-layer plywood; the horizontal back ribs are horizontal reinforcement components of the reaction wall formwork, and are closely attached to the vertical back ribs.
5. The reaction wall formwork reinforcement structure according to claim 1, characterized in that: The fastening steel plate is a square component formed by cutting and processing a steel plate. A circular hole is arranged at the center of the fastening steel plate, and the hole diameter matches the diameter of the tension rod. The steel plate presses the horizontal back rib.
6. The reaction wall formwork reinforcement structure according to claim 1, characterized in that: The positioning plug is a component made of round steel, and is provided with an inner circle, the hole diameter of the inner circle matches the diameter of the tie rod.