Precast concrete superposed beam and steel bar truss floor support plate support-free connecting node
By setting angle steel and screw connections between precast concrete beams and reinforced truss floor decks, the problems of support requirements and construction joints in traditional connection nodes are solved, support-free construction and waterproofing effects are achieved, and construction efficiency and structural stability are improved.
Patent Information
- Application Number
- CN202422817599.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-19
AI Technical Summary
The connection nodes between traditional precast concrete beams and reinforced truss floor slabs require a lot of support, and there are problems with construction joints and waterproofing, which limits their scope of application.
Connectors are set in the precast concrete beams, the vertical legs of the angle steel are welded to the connectors, and the horizontal legs are connected to the steel truss floor deck with screws to form a supporting structure, avoiding the use of traditional supports.
It realizes the connection without support, simplifies the construction process, improves construction efficiency, enhances the integrity and waterproof performance of the structure, and expands the scope of application.
Smart Images
Figure CN223398231U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building structures, in particular to a support-free connection node of a precast concrete composite beam and a steel bar truss floor deck. Background Art
[0002] A reinforced truss is a truss structure constructed from steel bars, commonly used for support and load-bearing in buildings, bridges, and industrial facilities. It utilizes the geometric properties of triangles to effectively distribute loads, thereby improving structural stability and strength. Compared to traditional concrete structures, a reinforced truss reduces material usage and overall weight. Prefabricated components can be manufactured in a factory and assembled on-site, improving construction efficiency.
[0003] Traditional nodes are cast-in-place concrete beams, and the steel bars at the ends of the beams extend into the steel truss floor decking. Traditional nodes require a lot of support under the steel truss floor decking, which is time-consuming and labor-intensive. In addition, since the steel truss floor decking is cast for the second time, there is a construction joint between it and the once-cast beams, which is prone to waterproofing problems, limiting its application on roofs or other water-facing surfaces.
[0004] Therefore, there is an urgent need to construct a connection node between the composite beam and the steel truss that has wide applicability, no vertical construction joints, is effectively waterproof, and can be support-free. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the prior art by providing a support-free connection node between precast concrete composite beams and steel truss floor decks. By providing connectors in the precast concrete beams, the vertical legs of the angle steel are welded to the connectors, while the horizontal legs are connected to the steel truss floor decks using screws, allowing the angle steel to perform a supporting function, eliminating the need for extensive support.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] The utility model provides a support-free connection node between a precast concrete composite beam and a steel truss floor deck, comprising a precast concrete composite beam, a steel truss floor deck and angle steel;
[0008] The angle steel includes a horizontal limb and a vertical limb. The vertical limb is fixed to the side wall of the precast concrete composite beam by a connecting piece, and the horizontal limb is fixed to the bottom of the steel truss floor deck by a screw assembly. The angle steel is used to fix the precast concrete composite beam and the steel truss floor deck to facilitate concrete pouring.
[0009] Furthermore, the connecting member is an anchor plate, and the anchor plate is embedded in the interior of the precast concrete composite beam.
[0010] Furthermore, the vertical limb is welded to the anchor plate.
[0011] Furthermore, the two anchor plates are fixed as a group and symmetrically embedded in the precast concrete composite beam.
[0012] Furthermore, holes are provided on the steel bar truss floor deck, and through holes are provided on the horizontal limbs.
[0013] Furthermore, the screw assembly includes a screw and a nut, and the screw passes through the holes on the steel truss floor deck and the through holes on the horizontal limbs in sequence and is fixed with the nut.
[0014] Furthermore, the angle steels are symmetrically arranged on both sides of the precast concrete composite beam.
[0015] Furthermore, the steel truss floor deck is provided with a truss upper chord steel bar, and the truss upper chord steel bar is a connecting steel bar between the prefabricated concrete composite beam and the steel truss floor deck.
[0016] Furthermore, the precast concrete composite beam is provided with precast beam top longitudinal reinforcement and precast beam stirrups inside.
[0017] Furthermore, the longitudinal reinforcement at the top of the precast beam is fixed to the four corners of the precast concrete composite beam, and the stirrups of the precast beam are fixed around the inside of the precast concrete composite beam.
[0018] Compared with the prior art, the present invention has the following advantages and beneficial effects:
[0019] 1. The utility model sets connectors in precast concrete beams, welds the vertical limbs of the angle steel to the connectors, and connects the horizontal limbs to the steel truss floor deck with screws, so that the angle steel plays a supporting role and eliminates the need for a large amount of support.
[0020] 2. This new type of structure is easy to manufacture and construct, has a safe and reliable structure, and has a wide range of applications. It enables the support-free construction of steel truss floor decks, facilitating the pre-embedding and passage of mechanical and electrical pipelines. It has strong applicability, good mechanical integrity, and significantly improves on-site construction efficiency. During use, the steel truss floor deck can serve as tensile reinforcement for the floor slab, increasing the floor slab's rigidity and saving steel. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 This is a structural schematic diagram of a support-free connection node between a precast concrete composite beam and a reinforced steel truss floor deck.
[0022] Description of the markings in the figure:
[0023] 1- Precast concrete composite beam, 2- Reinforced truss floor deck, 3- Concrete, 4- Angle steel, 5- Screw, 6- Nut, 7- Precast beam top longitudinal reinforcement, 8- Precast beam stirrups, 9- Truss upper chord reinforcement. DETAILED DESCRIPTION
[0024] The specific implementation methods of the present invention are described in detail below through examples. These examples are implemented on the premise of the scheme described in the present invention, and provide detailed implementation methods and specific operating processes, but the protection scope of the present invention is not limited to the following examples.
[0025] The present invention is further described below with reference to the accompanying drawings and specific embodiments. Any features, such as component models, material names, connection structures, preparation methods, materials, structures, or composition ratios, that are not explicitly described in this technical solution are considered to be common technical features disclosed in the prior art.
[0026] Example 1
[0027] This embodiment provides a support-free connection node between a precast concrete composite beam and a steel truss floor deck. Figure 1 As shown, the structure comprises a precast concrete composite beam 1, a steel truss floor deck 2, and angle steel 4. The angle steel 4 is symmetrically arranged on both sides of the precast concrete composite beam 1 and on the outside of the precast concrete composite beam 1. The steel truss floor deck 2 is internally provided with truss top chord steel bars 9, which serve as connecting bars between the precast concrete composite beam and the steel truss floor deck 2. The precast concrete composite beam 1 is provided with precast beam top longitudinal bars 7 and precast beam stirrups 8.
[0028] The angle steel 4 includes a horizontal limb and a vertical limb. The vertical limb is fixed to the side wall of the precast concrete composite beam 1 using a connecting member. The connecting member is an anchor plate, which is embedded in the interior of the precast concrete composite beam 1. The vertical limb is welded to the anchor plate. Two anchor plates are fixed as a group and symmetrically embedded in the interior of the precast concrete composite beam 1. The horizontal limb is removably connected to the bottom of the steel truss floor deck 2 using a screw assembly. The angle steel 4 is used to fix the precast concrete composite beam 1 and the steel truss floor deck 2 to facilitate the pouring of concrete 3. The steel truss floor deck 2 is provided with holes, and the horizontal limb is provided with a through hole.
[0029] The screw assembly includes a screw 5 and a nut 6. The screw 5 passes through the holes on the steel truss floor deck 2 and the through holes on the horizontal limbs in sequence and is fixed with the nut 6. The angle steel 4 is fixed to the outside of the precast concrete composite beam 1.
[0030] The precast concrete composite beam 1 is provided with precast beam top longitudinal reinforcement 7 and precast beam stirrups 8. The precast beam top longitudinal reinforcement 7 is fixed to the four corners of the precast concrete composite beam 1, and the precast beam stirrups 8 are fixed to the four sides of the precast concrete composite beam 1.
[0031] The precast concrete composite beams 1 and the steel truss floor decking slabs 2 in this embodiment are both precast. After the precast concrete composite beams 1 are cast, the steel truss floor decking slabs 2 are laid, and the slab concrete 3 is cast again. This is beneficial to controlling the flatness of the slab concrete 3 and smoothing and calendering it in one go. The second casting is performed at the nodes, there are no vertical construction joints, and no waterproofing is required. It can also be used on roofs.
[0032] The above description of the embodiments is intended to facilitate understanding and use of the utility model by those skilled in the art. Those skilled in the art will readily be able to make various modifications to these embodiments and apply the general principles described herein to other embodiments without requiring inventive effort. Therefore, the utility model is not limited to the above-described embodiments. Improvements and modifications made by those skilled in the art based on the disclosure of this utility model without departing from the scope of this utility model should be within the scope of protection of this utility model.
Claims
1. A support-free connection node between a precast concrete composite beam and a steel truss floor deck, characterized in that: It comprises a precast concrete composite beam (1), a steel truss floor deck (2) and angle steel (4); The angle steel (4) comprises a horizontal limb and a vertical limb, wherein the vertical limb is fixed to the side wall of the precast concrete composite beam (1) by a connecting piece, and the horizontal limb is fixed to the bottom of the steel truss floor deck (2) by a screw assembly. The angle steel (4) is used to fix the precast concrete composite beam (1) and the steel truss floor deck (2) to facilitate the pouring of concrete (3).
2. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 1, characterized in that: The connecting member is an anchor plate, and the anchor plate is pre-buried inside the precast concrete composite beam (1).
3. The support-free connection node between a precast concrete composite beam and a steel truss floor deck according to claim 2, characterized in that: The vertical limbs are welded to the anchor plates.
4. The support-free connection node between a precast concrete composite beam and a steel truss floor deck according to claim 2, characterized in that: The two anchor plates are fixed as a group and symmetrically embedded in the precast concrete composite beam (1).
5. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 1, characterized in that: The steel bar truss floor deck (2) is provided with holes, and the horizontal limbs are provided with through holes.
6. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 5, characterized in that: The screw rod assembly comprises a screw rod (5) and a nut (6); the screw rod (5) passes through the hole on the steel truss floor deck (2) and the through hole on the horizontal limb in sequence and is fixed by the nut (6).
7. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 1, characterized in that: The angle steels (4) are symmetrically arranged on both sides of the precast concrete composite beam (1).
8. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 1, characterized in that: The steel truss floor deck (2) is provided with a truss upper chord steel bar (9), and the truss upper chord steel bar (9) is a connecting steel bar between the prefabricated concrete composite beam and the steel truss floor deck (2).
9. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 1, characterized in that: Precast beam top longitudinal reinforcement (7) and precast beam stirrups (8) are provided inside the precast concrete composite beam (1).
10. The support-free connection node between precast concrete composite beam and steel truss floor deck according to claim 9, characterized in that: The longitudinal reinforcement (7) at the top of the precast beam is fixed to the four corners of the precast concrete composite beam (1), and the precast beam stirrups (8) are fixed to the four sides inside the precast concrete composite beam (1).