A disassembly-free integrated beam-column joint finished product prefabricated component

Abstract

The utility model discloses a dismantling -free integrated beam column node finished product prefabricated component, including multilateral finished product prefabricated frame, the outer side of multilateral finished product prefabricated frame is provided with beam end cast -in -situ area template lap joint step, the lower surface of multilateral finished product prefabricated frame is provided with column end cast -in -situ area template positioning groove, the beam end cast -in -situ area template lap joint step with column end cast -in -situ area template positioning groove between is provided with arc transition section. The device sets "the splicing beam column node template -enhanced node stress -optimization finished product decoration " three -fold function in one, can realize the effect such as promotion construction efficiency, improve node performance and enhance architectural aesthetics.

Description

Technical Field

[0001] This utility model relates to the field of building construction, specifically to a prefabricated component for an integrated beam-column joint that can be disassembled without dismantling. Background Technology

[0002] Traditionally, the formwork for concrete beam-column joints is created by splicing beam and column formwork together to form the pouring space. This formwork construction method has the following drawbacks:

[0003] 1. Long construction period: Traditional beam-column joint construction requires on-site formwork erection and dismantling, which is complicated, has a long construction period (accounting for 20%-30% of the main construction period), high formwork loss rate (about 15%), few material turnovers and generates a large amount of construction waste.

[0004] 2. Insufficient joint performance: The precision of on-site formwork is difficult to control, which can easily lead to insufficient concrete pouring in the core area of ​​the joint and deviation in the positioning of reinforcing bars, affecting seismic performance; subsequent plastering and decoration will increase costs and pose risks of cracking and falling off.

[0005] 3. Limitations in aesthetic effect: Traditional construction joints have rough surfaces, requiring secondary decoration to achieve a beautiful appearance, which cannot meet the needs of buildings such as fair-faced concrete and industrial style for the original aesthetics of the structure. Utility Model Content

[0006] To address the aforementioned issues, this utility model discloses a prefabricated, non-disassembly integrated beam-column joint component. This device integrates three functions: "non-splicing beam-column joint template - enhanced joint stress - optimized finished product decoration," which can improve construction efficiency, enhance joint performance, and improve architectural aesthetics.

[0007] A precast, non-removable integrated beam-column joint component includes a polygonal precast frame. The outer surface of the polygonal precast frame is provided with a formwork overlap step for the cast-in-place area at the beam end. The lower surface of the polygonal precast frame is provided with a formwork positioning groove for the cast-in-place area at the column end. An arc-shaped transition section is provided between the formwork overlap step for the cast-in-place area at the beam end and the formwork positioning groove for the cast-in-place area at the column end.

[0008] Preferably, the inner side and / or upper surface of the polygonal prefabricated frame are connected with reserved bent anchor bars.

[0009] Preferably, the material of the polygonal precast frame is fiber-reinforced cementitious composite (FRP) or high-precision precast concrete.

[0010] Preferably, the formwork overlap steps in the cast-in-place area at the beam end are L-shaped structures.

[0011] Preferably, the template positioning groove in the cast-in-place area at the column end is an inverted U-shaped structure.

[0012] Preferably, the arc-shaped transition section has a concave structure.

[0013] Preferably, the edges of the prefabricated components of the non-removable integrated beam-column joint are provided with aluminum alloy or brass edge trims.

[0014] Compared with the prior art, this application has the following beneficial effects.

[0015] 1. No splicing required for beam and column joint formwork: Precast components serve as formwork support, joint stress transfer, and permanent decorative surface layer, eliminating the need for formwork erection and secondary decoration procedures.

[0016] 2. Tenon and mortise interlocking shear resistance structure: The precast components of the non-removable integrated beam-column joint are interlocked with the precast beam formwork and precast column formwork through tenon-groove interlocking, combined with sawtooth shear keys, to improve the shear strength of the interface between new and old concrete.

[0017] 3. Decorative surface layer prefabrication in the factory: The surface texture, color and edge details of the prefabricated components are produced in a standardized manner in the factory, realizing the precise presentation of "structure as decoration". Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a side view of the connection between the template of the present invention and the cast-in-place area of ​​the beam-column joint;

[0021] Figure 3 This is a schematic diagram of the top surface structure of the connection between the template of the cast-in-place area of ​​the beam-column joint and the present invention;

[0022] Figure 4 This is a schematic diagram of the surface after the casting of this utility model is completed;

[0023] Figure 5 This is a schematic diagram of the cross-section after the casting of this utility model is completed;

[0024] In the figure, 1. Precast integrated beam-column joint components that can be dismantled without dismantling; 1-1. Formwork overlap step in the cast-in-place area of ​​the beam end; 1-2. Formwork positioning groove in the cast-in-place area of ​​the column end; 2. Beam formwork; 2-1. Beam side formwork; 2-2. Beam bottom formwork; 3. Reserved bent anchor bars; 4. Column formwork; 5. Main beam; 6. Main column. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] This utility model discloses a method such as Figure 1-5 The precast integrated beam-column joint shown is a component that can be disassembled without disassembly. The component consists of four parts: precast beam end components, precast column end components, steel reinforcement connection components, and cast-in-place concrete core area.

[0027] The precast components are made of fiber-reinforced cementitious composite material (FRP) or high-precision precast concrete. The main body is a polygonal precast frame; in this embodiment, a rectangular frame is used as an example. The center of the frame is a hollow core area for cast-in-place concrete. Precast beam end components are set on the outer side of the rectangular frame, forming an "L"-shaped beam end cast-in-place area formwork overlap step 1-1. One end of the beam bottom formwork 2-2 overlaps on this overlap step, forming the beam formwork 2 together with the beam side formwork 2-1. After concrete pouring, the main beam 5 is formed. Precast column end components are set on the bottom surface of the rectangular frame, forming an inverted "U"-shaped column end cast-in-place area formwork positioning groove 1-2. The upper ends of the four column formwork pieces 4 are inserted into the corresponding positioning grooves 1-2. After concrete pouring, the main column 6 is formed. The steel reinforcement connection components preferably have pre-reserved bent anchor bars 3, which are set on the inner and top surfaces of the rectangular frame. The pre-reserved anchor bars (3) are Ф16mm high-strength steel bars. These pre-reserved bars in the precast beam and column components are bent and anchored into the cast-in-place portions at the beam and column ends. They are then tied together with the beam and column stirrups to achieve a rigid connection with the cast-in-place beams and columns. The surface of the precast components is a fair-faced concrete texture layer, which forms a mirror or matte surface after pouring. To meet different decorative needs, a geometric textured decorative layer can also be added: pre-cast diamond / striped three-dimensional patterns (5-10mm deep) to create an embossed effect; material splicing construction: aluminum alloy / brass edging strips are installed at the edges of the formwork to create a material contrast with the concrete body.

[0028] A concave arc-shaped transition section is set between the formwork overlap step 1-1 in the cast-in-place area at the beam end and the formwork positioning groove 1-2 in the cast-in-place area at the column end. The transition section is provided with a decorative surface layer, including a mirror polished layer, a three-dimensional textured layer or a metal edge strip. The decorative surface layer is prefabricated as an integral part of the formwork body.

[0029] Using this component to connect concrete beams and columns can improve construction efficiency, eliminating the need for formwork erection and removal at beam-column joints. The construction cycle for a single joint is shortened by 40%, and the formwork loss rate is reduced to below 5%. The shear strength of the joint core area is increased by 25%, and the rebar positioning accuracy error is ≤2mm, meeting the seismic fortification requirements of intensity 8. The surface flatness is ≤3mm / 2m, with a uniform texture, allowing it to be directly used as the final finishing layer.

[0030] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A prefabricated, non-removable, integrated beam-column joint component, characterized in that, The device includes a polygonal prefabricated frame, the outer side of which is provided with a step for overlapping the formwork of the cast-in-place area at the beam end, and the lower surface of which is provided with a positioning groove for the formwork of the cast-in-place area at the column end. An arc-shaped transition section is provided between the step for overlapping the formwork of the cast-in-place area at the beam end and the positioning groove for the formwork of the cast-in-place area at the column end.

2. The prefabricated integrated beam-column joint component without disassembly according to claim 1, characterized in that, The inner side and / or upper surface of the polygonal prefabricated frame are connected with reserved bent anchor bars.

3. The prefabricated integrated beam-column joint component without disassembly according to claim 1, characterized in that, The material of the polygonal prefabricated frame is fiber-reinforced cement-based composite material or precast concrete.

4. The prefabricated integrated beam-column joint component without disassembly according to claim 1, characterized in that, The formwork overlap steps in the cast-in-place area at the beam end are L-shaped structures.

5. The prefabricated integrated beam-column joint component without disassembly according to claim 1, characterized in that, The template positioning groove for the cast-in-place area at the column end is an inverted U-shaped structure.

6. The prefabricated integrated beam-column joint component without disassembly according to claim 1, characterized in that, The arc-shaped transition section has an inwardly concave structure.

7. The prefabricated integrated beam-column joint component without disassembly according to claim 1, characterized in that, The edges of the prefabricated components of the non-removable integrated beam-column joint are provided with aluminum alloy or brass edging strips.

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