A new wall connector

Abstract

This invention provides a novel, reusable wall tie adapter that can replace cantilevered I-beams and enables multi-angle rigid connections between triangular support frames and shear walls. It includes a short steel pipe and two end plates, each annular, connected to the steel pipe via a full-circumference fillet weld. It is particularly suitable for cantilever structures with an outward extension of ≤1.5m in the external shear wall section, addressing the problems of existing wall ties that cannot achieve arbitrary angle connections, are slow to install, have poor versatility, and are costly to construct.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a new type of wall connection adapter. Background Technology

[0002] In the field of building construction, the connection between the roof eaves structure support system and the shear wall is a technical challenge and a crucial link in ensuring construction safety and quality during the construction of roof eaves structures in cast-in-place shear wall sections. Traditionally, I-beam cantilever scaffolds are used as the support system, which is costly, economical, and involves complex joint treatment. Furthermore, since the upper structure of the shear wall has not yet been constructed, the upper diagonal tie rods of the cantilevered I-beams cannot be reliably fixed in place. To respond to the theme of "intensive high-quality development" and actively promote "four new technologies" to achieve cost reduction and efficiency improvement, this utility model designs a novel wall connection adapter. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a novel, reusable wall tie adapter that can replace cantilevered I-beams and achieves multi-angle rigid connections between triangular support frames and shear walls. It is a reusable connection device used between cast-in-place shear walls and roof eaves triangular steel pipe support systems. This new wall tie adapter is simple to operate and highly versatile. It is particularly suitable for cantilever structures with an outward extension length of ≤1.5m in the external shear wall section, solving the problems of existing wall ties being unable to achieve arbitrary angle connections, slow installation, poor versatility, and high construction costs.

[0004] This utility model is achieved through the following technical solution: A novel wall-connecting adapter includes a short steel pipe and two end plates. The short steel pipe is a seamless steel pipe with an outer diameter of Ø48, a wall thickness of δ=10mm, and a length of 200mm. The end plates are annular end plates with an outer diameter of Ø48, a central through hole of Φ22mm, and a thickness of δ=10mm. The end plates are connected to the steel pipe by a full-circumferential fillet weld.

[0005] Preferably, the weld leg height between the end plate and the steel pipe is not less than 6mm.

[0006] Preferably, a cross-shaped fastener or a swivel fastener is connected to the short steel pipe.

[0007] Preferably, the welded joint between the short steel pipe and the end plate is connected by an M20 high-strength bolt, and the M20 high-strength bolt has nuts at both ends.

[0008] Preferably, the high-strength bolt is equipped with a pre-embedded bolt plastic sleeve, which includes a front bolt portion and a rear nut portion, and the nut portion is provided with a cap.

[0009] The beneficial effects of this utility model are as follows: 1. Easy installation: This new type of wall tie adapter is small in size and lightweight. It can be connected to cross fasteners and swivel fasteners at any angle in different situations. This is a feature that existing new wall ties on the market do not have.

[0010] 2. Good economic efficiency: In the construction of roof eaves, cantilevered I-beams are generally used as the load-bearing points of the eaves support system to ensure construction safety. However, the wall needs to leave a large number of holes to pass through the I-beams, and the subsequent wet work of patching these holes is extensive. The rental cost of the I-beams and the structural maintenance cost are also very high. This utility model breaks through the conventional limitations of construction methods and uses a new type of wall-connecting adapter to replace the cantilevered I-beams. Only the new wall-connecting adapter of this invention needs to be customized once, and it can be reused. The other materials used are all conventional materials that are readily available on site and easy to rent, which can greatly reduce material rental costs, save construction time and costs, and effectively reduce the risk of external wall leakage.

[0011] 3. High Adaptability: Existing new wall ties on the market suffer from low strength and rigidity, and limited functionality. They cannot achieve various connection methods at arbitrary angles with cross couplers and swivel couplers in different situations, and their versatility is weak. This new wall tie adapter can achieve various connection methods at arbitrary angles with cross couplers and swivel couplers in different situations. The device is made of readily available and inexpensive materials, has extremely high versatility, and can effectively utilize existing tie rod holes in shear walls. It is typically used in conjunction with conventional steel pipes, couplers, high-strength bolts, pre-embedded bolt plastic sleeves, etc., greatly reducing the safety hazards of high-altitude installation of cantilevered I-beams. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the support system structure (embedded type) of the roof eaves structure of this utility model at the external shear wall.

[0013] Figure 2 This is a schematic diagram of the support system structure (through-wall type) of the roof eaves structure of this utility model at the external shear wall.

[0014] Figure 3 This is a schematic diagram of the horizontal tie structure of the support system of this utility model (through-wall type).

[0015] Figure 4 This is a schematic diagram of the horizontal tie structure of the support system of this utility model (pre-embedded type).

[0016] Figure 5 This is a structural schematic diagram of the wall-connecting adapter of this utility model.

[0017] Figure 6 This is a structural schematic diagram of the pre-embedded bolt plastic sleeve of this utility model.

[0018] In the diagram: 1-Wall ties, 11-Short steel pipe, 12-End plate, 2-Fastener, 3-High-strength bolt, 4-Nut, 5-Bolt plastic sleeve, 51-Bolt part, 52-Nut part, 53-Cap, 6-Steel pipe for support frame, 7-Shear wall, 8-Roof eaves board, 9-Reinforced concrete boss, 10-Rebar through aluminum foil bolt hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figure 1-6 As shown in the figure, this embodiment develops a novel transverse connection device between a steel pipe frame and a shear wall. This device is manufactured using a short steel pipe 11 with a length of 200mm, an outer diameter of ø48mm, and a wall thickness of 10mm, and two annular end plates 12 with the same outer diameter as the short steel pipe 11 and a thickness of 10mm. This device is highly versatile and can be reused after one-time processing. It can be used in various occasions and can be connected to other conventional support frame steel pipes 6 through traditional cross couplers or swivel couplers. Steel pipes and couplers 2 are relatively common on construction sites, and the materials are readily available. They can be flexibly rented and returned according to the site conditions. Moreover, this new wall connection device has a high turnover rate. Compared with cantilevered I-beams, it is simple to operate, greatly reduces the workload, is easily accepted by workers, and can effectively reduce construction costs.

[0021] Its core structure lies in: Short steel pipe 11: A seamless steel pipe with a diameter of Ø48, δ=10mm and a length of 200mm, which serves as the main force transmission structure.

[0022] End plate 12: Q235B annular end plate, δ=10mm. End plate 12 and short steel pipe 11 are connected by full circumferential fillet weld, and the weld leg height is not less than 6mm, which is used to diffuse local stress.

[0023] Bolt hole: A Φ22mm center through hole is provided in the center of the annular end plate 12 for matching M20 high-strength bolt 3.

[0024] Fastener 2 interface: The original pipe opening is retained, compatible with cross / rotary fasteners.

[0025] The pre-embedded bolt plastic sleeve 5 includes a front bolt part 51 and a rear nut part 52, which are matched with the size of the high-strength bolt 3 and nut 4. The nut part 52 is provided with a cover 53.

[0026] The connection steps in this embodiment are as follows: Shear wall 7 → Pre-embedded bolt plastic sleeve 5 → Insert M20 high-strength bolt 3 → Install new wall tie adapter 1 → Tighten end nut 4 → Install fastener 2 → Install triangular support frame steel pipe 6. This implementation method has the following key features: (1) Composite stress design The thickness-to-diameter ratio of the short steel pipe 11 of the adapter to the end plate 12 is 1:4.8 (10mm / 48mm), ensuring that the tensile force of the high-strength bolt 3 is evenly transmitted.

[0027] The adapter uses a short steel pipe with a wall thickness of 10mm (3.57 times that of a conventional pipe) to provide shear redundancy.

[0028] Test data: Shear bearing capacity reaches 35.2kN.

[0029] (2) Omnidirectional adjustment mechanism The rotating fastener 2 allows for continuous angle adjustment from 0° to 360°. The pipe opening is chamfered to enhance the engagement of the fastener 2 (the outer diameter of the pipe opening ring is slightly larger than the outer diameter of the steel pipe, and the stepped part is welded into a chamfer shape).

[0030] (3) Modular assembly system Pre-embedded stage: Pre-embed the cup-shaped bolt plastic sleeve 5 that goes through the tie rod → pour and protect → install M20 high-strength bolt 3 after demolding; Installation stage: Insert M20 high-strength bolt 3 into the screw hole and install the lock nut inside → fit the steel pipe adapter onto the outside of the screw and lock it with the nut → connect fastener 2 to the new steel pipe wall connection adapter 1 → erect the triangular steel pipe frame; Dismantling phase: Loosen fastener 2 → Disassemble steel pipe adapter → Disassemble high-strength bolts → Move to the next node.

[0031] This implementation method has the following key points: 1. Based on the construction process requirements in the on-site construction plan, pre-order a sufficient number of new wall tie adapters for backup.

[0032] 2. Purchase the required quantity of pre-embedded detachable M20 high-strength bolts and their non-detachable pre-embedded plastic sleeves. Steel pipes and fasteners can be rented nearby as needed on site.

[0033] 3. The premise for the stability of the steel pipe support system for the roof eaves is to first pour the outer shear wall up to the bottom of the beam, and use the pre-embedded bolts in the shear wall and the new type of wall tie adapter to achieve lateral connection, so that the support system firmly holds the shear wall.

[0034] 4. After the roof slab and eaves formwork are erected and the steel reinforcement is inspected, the next step is to pour the roof eaves slab. The pouring process should be carried out symmetrically to avoid the concentration of personnel and loads.

[0035] The technical benefits of this implementation method are as follows: 1. Safety Enhancement: Joint shear capacity > 35kN (Third-party test report number: TT2023-JG068).

[0036] 2. Shorter construction period: Installation time for a single node is 8.5 minutes (76% less than that of I-beams).

[0037] 3. General application: It can be widely used in scenarios such as curtain wall support and protective canopy construction.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new type of wall tie adapter, characterized in that, It includes a short steel pipe and two end plates. The short steel pipe is a seamless steel pipe with an outer diameter of Ø48, a wall thickness of δ=10mm, and a length of 200mm. The end plates are annular end plates with an outer diameter of Ø48, a central through hole of Φ22mm, and a thickness of δ=10mm. The end plates are connected to the steel pipe by a full-circumference fillet weld.

2. A new wall tie according to claim 1, characterized in that The weld leg height between the end plate and the steel pipe shall not be less than 6mm.

3. A new type of wall connecting adapter according to claim 1, characterized in that, The short steel pipe is connected to a cross fastener or a swivel fastener.

4. A new wall tie according to claim 1, characterized in that, The short steel pipe and the end plate are connected by M20 high-strength bolts, and the M20 high-strength bolts are provided with nuts at both ends.

5. A new type of wall connector according to claim 4, characterized in that, The high-strength bolt is equipped with a pre-embedded bolt plastic sleeve, which includes a front bolt part and a rear nut part, and the nut part is provided with a cap.

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