Connecting structure of original structural slab and newly-added concrete beam
By using a combination of connection components and structural adhesives between the newly added beams and the original structural panels, the problem of insufficient connection strength was solved and the seismic performance was improved.
Patent Information
- Application Number
- CN202422731539.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-08
AI Technical Summary
In the existing technology, the connection strength between the newly added beams and the original structural panels is insufficient. Especially in houses with low seismic fortification intensity, the bolt connection cannot meet the seismic requirements, and there is an urgent need to improve the connection strength.
The connection components used include connecting frames, fixing layers, vertical bars, transverse bars, upper beam iron, lower beam iron, connecting bars, torsional waist bars and stirrups. Through the combined use of these components, the connection fixation and stability between the newly added beam and the original structural plate are enhanced, and the connection strength is enhanced by using structural adhesive.
The connection tightness and seismic performance between the newly added beams and the original structural panels are improved, and the seismic strength and stability of the overall structure are enhanced.
Smart Images
Figure CN223387022U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of old house reconstruction, and in particular to a connection structure between an original structural plate and a newly added concrete beam. Background Art
[0002] Many old residential communities and preserved historic buildings exist within urban areas across the country. Due to age, construction techniques, and other factors, these structures often use older, less robust precast floor slabs, lacking seismic performance and robustness. However, due to cost, historical, and cultural factors, these structures cannot be demolished and rebuilt. Therefore, effectively reinforcing these precast floor slabs is crucial for improving their safety.
[0003] During building reinforcement and renovation, the connection between new beams and existing structural panels is crucial. When connecting these beams, the building's seismic fortification intensity level must be determined first, and then the connection structure between the new beams and existing structural panels must be selected. Currently, bolts are commonly used to connect these beams to existing structural panels.
[0004] However, when the seismic fortification intensity level of the original building is low, the bolt connection between the newly added beams and the original structural panels alone cannot achieve the required seismic fortification intensity level. Therefore, it is urgent to design a connection structure that can effectively improve the connection strength between the newly added beams and the original structural layer. Utility Model Content
[0005] In order to improve the connection strength between the newly added beams and the original structural layer, the present application provides a connection structure between the original structural plate and the newly added concrete beams.
[0006] This application provides a connection structure between the original structural plate and the newly added concrete beam, which adopts the following technical solution:
[0007] A connection structure between an original structural slab and a newly added concrete beam, comprising a connection assembly provided on the newly added beam and connected to the original floor slab, the connection assembly comprising:
[0008] A connecting frame is provided on the newly added beam and passes through the original floor slab to connect to the end of the original floor slab away from the newly added beam. Multiple groups of the connecting frames are provided at intervals along the length direction of the newly added beam;
[0009] The fixing layer is arranged on one end of the original floor slab away from the newly added beam and is connected to the connecting frame passing through the original floor slab so that the connecting frame is fixed on the original floor slab. The fixing layer is connected to multiple groups of connecting frames.
[0010] By adopting the above technical solution, multiple groups of connecting frames are fixed through one end of the original floor slab by the fixing layer, and one end of the multiple groups of connecting frames located at the bottom of the original floor slab is pre-embedded in the newly added beam, and then the newly added beam is hoisted and fixed by the fixing layer and the original floor slab, thereby improving the connection tightness between the newly added beam and the original floor slab, and ultimately improving the connection strength between the newly added beam and the original structural layer.
[0011] Furthermore, the connecting frame includes:
[0012] Vertical reinforcement, multiple groups of vertical reinforcement are arranged at intervals on the newly added beams, and the vertical reinforcement passes through the original floor slab;
[0013] a first transverse reinforcement, the first transverse reinforcement being arranged on an end of the vertical reinforcement away from the newly added beam and connected to the plurality of groups of vertical reinforcements, the first transverse reinforcement being pre-embedded in the fixed layer;
[0014] The second transverse reinforcement is arranged on one end of the vertical reinforcement away from the first transverse reinforcement and is connected with multiple groups of vertical reinforcements. The second transverse reinforcement is pre-embedded in the newly added beam.
[0015] By adopting the above technical solution, the fixed layer located on the upper surface of the original floor slab fixes the first transverse reinforcement, and the fixed layer and the first transverse reinforcement jointly fix multiple groups of vertical reinforcements. The newly added beam and the second transverse reinforcement in the newly added beam are hoisted and fixed through the multiple groups of vertical reinforcements, thereby improving the connection strength between the newly added beam and the original floor slab.
[0016] Furthermore, a plurality of groups of beam upper irons are arranged at intervals in the fixed layer along the width direction of the fixed layer. The beam upper irons are arranged on the original floor slab and support the plurality of groups of first transverse reinforcements.
[0017] By adopting the above technical solution, multiple groups of beam irons support the bottom of the first transverse reinforcement, thereby improving the fixed support effect of the fixed layer on the first transverse reinforcement. At the same time, the beam irons are connected to multiple groups of first transverse reinforcements, thereby improving the connection strength between multiple groups of first transverse reinforcements, and ultimately improving the supporting force of the original floor slab on the fixed layer.
[0018] Furthermore, a plurality of groups of beam under-irons are arranged at intervals along the width direction of the newly added beam, and the plurality of groups of beam under-irons are all connected to the second transverse reinforcement, and the second transverse reinforcement supports the plurality of groups of beam under-irons.
[0019] By adopting the above technical solution, the second transverse reinforcement supports multiple groups of beam under-iron, and multiple groups of second transverse reinforcement jointly support the beam under-iron, thereby enabling multiple groups of vertical reinforcements on the connecting frames to exert force on the newly added beams, thereby improving the connection effect of the fixed layer on the newly added beams.
[0020] Furthermore, a plurality of groups of connecting bars are tied to the vertical bars at intervals. The connecting bars are arranged along the length direction of the newly added beam and are used to enhance the connection strength between the newly added beam and the vertical bars.
[0021] By adopting the above technical solution, the connecting bars are used to enhance the stability of the vertical bars on multiple groups of connecting frames. The connecting bars are pre-embedded in the newly added beams, ultimately improving the connection stability of the vertical bars to the newly added beams.
[0022] Furthermore, multiple groups of anti-torsion waist reinforcements are cross-tied between the multiple groups of vertical reinforcements, and the multiple groups of anti-torsion waist reinforcements are used to prevent torsion between the multiple groups of vertical reinforcements.
[0023] By adopting the above technical solution, multiple groups of mutually crossed anti-torsion waist reinforcements facilitate fixing the positions of multiple groups of vertical reinforcements, thereby reducing the probability of torsion between the multiple groups of vertical reinforcements.
[0024] Furthermore, stirrups are provided on the side of the multiple groups of vertical bars away from the original floor slab, and the stirrups are tied together with the multiple groups of vertical bars and are used to prevent the multiple groups of vertical bars from approaching or moving away from each other.
[0025] By adopting the above technical solution, stirrups are used to tie and fix multiple groups of vertical bars on the side away from the original floor slab, thereby reducing the probability of deformation of the multiple groups of vertical bars.
[0026] Furthermore, a plurality of installation holes for placing vertical bars are provided at intervals on the original floor slab, and structural adhesive for enhancing the connection strength between the original floor slab and the vertical bars is poured into the gaps between the vertical bars and the installation holes.
[0027] By adopting the above technical solution, the structural adhesive enhances the connection strength between the vertical reinforcement and the original floor slab, thereby reducing the probability of the vertical reinforcement slipping relative to the installation hole.
[0028] Furthermore, a pouring port is provided on the original floor slab to facilitate pouring concrete into the newly added beam. The pouring port passes through the original floor slab and is communicated with the interior of the fixed layer.
[0029] By adopting the above technical solution, after the installation of the templates of the newly added beams and the fixed layer is completed, concrete is poured on the upper surface of the original floor slab. The concrete flows from the fixed layer into the template of the newly added beam through the pouring port, thereby facilitating the concrete pouring of the newly added beam.
[0030] In summary, this application includes at least one of the following beneficial technical effects:
[0031] The fixing layer is used to fix one end of multiple connecting frames passing through the original floor slab. The end of the multiple connecting frames located at the bottom of the original floor slab is pre-buried in the newly added beam. Then, the newly added beam is hoisted and fixed by the fixing layer and the original floor slab, thereby improving the connection tightness between the newly added beam and the original floor slab, and ultimately improving the connection strength between the newly added beam and the original structural layer. BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Figure 1It is a schematic diagram of the cross-sectional structure of this application.
[0033] Figure numerals: 1. Original floor plate; 11. Mounting hole; 2. Connection assembly; 21. Connection frame; 211. Vertical reinforcement; 212. First transverse reinforcement; 213. Second transverse reinforcement; 22. Fixed layer; 3. Upper iron of beam; 4. Lower iron of beam; 5. Connection reinforcement; 6. Torsional waist reinforcement; 7. Stirrups; 8. New beam. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1 This application is described in further detail.
[0035] The embodiment of the present application discloses a connection structure between an original structural plate and a newly added concrete beam.
[0036] Reference Figure 1 A connection structure between an original structural plate and a newly added concrete beam includes a connection component 2 arranged on a newly added beam 8 and connected to an original floor plate 1.
[0037] Reference Figure 1 The newly added beam 8 is located on the lower surface of the original floor slab 1. The newly added beam 8 is used to support the bottom of the original floor slab 1. The newly added beam 8 is tightly fitted on the bottom of the original floor slab 1 through the connecting component 2, and finally the original floor slab 1 and the newly added beam 8 form a whole, wherein the opposite ends of the newly added beam 8 are fixedly connected to the wall respectively. At the same time, the bending strength of the newly added beam 8 is relatively high. By connecting the original floor slab 1 and the newly added beam 8 into a whole, the seismic strength of the bottom of the original floor slab 1 is improved.
[0038] Reference Figure 1 The connection assembly 2 includes a connecting frame 21 and a fixing layer 22. The connecting frame 21 is pre-embedded and installed on the newly added beam 8. The connecting frame 21 passes through the original floor slab 1 and is connected to the end of the original floor slab 1 away from the newly added beam 8. Multiple groups of connecting frames 21 are installed at intervals along the length direction of the newly added beam 8, so as to improve the connection strength between the newly added beam 8 and the original floor slab 1; the fixing layer 22 is arranged on the end of the original floor slab 1 away from the newly added beam 8, and the fixing layer 22 is fixedly connected to the connecting frame 21 passing through the original floor slab 1, so that the connecting frame 21 is fixed on the original floor slab 1, wherein the length direction of the fixing layer 22 is parallel to the length direction of the newly added beam 8, and the fixing layer 22 is connected to multiple groups of connecting frames 21; the fixing layer 22 of this embodiment is cast in concrete.
[0039] Reference Figure 1The connecting frame 21 includes vertical bars 211, first transverse bars 212 and second transverse bars 213. There are multiple groups of vertical bars 211, and the multiple groups of vertical bars 211 are installed on the newly added beam 8 at intervals along the width direction of the newly added beam 8. The vertical bars 211 pass through the original floor slab 1, and most of the vertical bars 211 are located in the newly added beam 8; the first transverse bar 212 is fixedly installed on the end of the vertical bar 211 away from the newly added beam 8, the first transverse bar 212 is fixedly connected to the multiple groups of vertical bars 211, and the first transverse bar 212 is pre-buried in the fixed layer 22; the second transverse bar 213 is fixedly installed on the end of the vertical bar 211 away from the first transverse bar 212, the second transverse bar 213 is connected to the multiple groups of vertical bars 211, and the second transverse bar 213 is pre-buried in the newly added beam 8.
[0040] Reference Figure 1 In the fixed layer 22, multiple groups of beam irons 3 are installed at intervals along the width direction of the fixed layer 22. The axes of the beam irons 3 are parallel to the length direction of the fixed layer 22. The multiple groups of beam irons 3 are fixedly installed on the end of the first transverse reinforcement 212 close to the original floor slab 1. The beam irons 3 are fixedly installed on the upper surface of the original floor slab 1. The multiple groups of beam irons 3 are supported and fixed by the upper surface of the original floor slab 1. The multiple groups of beam irons 3 support the multiple groups of first transverse reinforcements 212, thereby fixing the multiple groups of vertical reinforcements 211 on the original floor slab 1.
[0041] Reference Figure 1 In the newly added beam 8, multiple groups of beam under-irons 4 are installed at intervals along the width direction of the newly added beam 8. The multiple groups of beam under-irons 4 are fixedly connected to the second transverse reinforcement 213. The beam under-irons 4 are located on the end of the second transverse reinforcement 213 close to the original floor slab 1. The second transverse reinforcement 213 supports the multiple groups of beam under-irons 4, and then supports the bottom of the multiple groups of beam under-irons 4 through the second transverse reinforcement 213, so that the multiple groups of beam under-irons 4 are stably fixed in the newly added beam 8.
[0042] Reference Figure 1 There are multiple groups of connecting bars 5 tied on the vertical bars 211 at intervals. The axes of the connecting bars 5 are parallel to the length direction of the newly added beam 8. The connecting bars 5 are fixedly connected to the multiple groups of vertical bars 211 in the length direction of the newly added beam 8. The multiple groups of connecting bars 5 are used to enhance the connection strength between the newly added beam 8 and the vertical bars 211.
[0043] Reference Figure 1 Since the ends of the multiple groups of vertical bars 211 away from the original floor slab 1 are longer, in order to reduce the probability of the multiple groups of vertical bars 211 directly transmitting torsion, multiple groups of anti-torsion waist bars 6 are cross-tied between the multiple groups of vertical bars 211. The axes of the anti-torsion waist bars 6 and the vertical bars 211 are connected to each other at an angle. The anti-torsion waist bars 6 are fixedly connected to the multiple groups of vertical bars 211 of the same group of connecting frames 21. The multiple groups of anti-torsion waist bars 6 are staggered and fixedly connected to each other, so as to prevent torsion between the multiple groups of vertical bars 211 and improve the stability between the multiple groups of vertical bars 211.
[0044] Reference Figure 1On the end of the multiple groups of vertical bars 211 on the same group of connecting frames 21 away from the original floor slab 1, stirrups 7 are provided. The stirrups 7 are tied to the multiple groups of vertical bars 211 to prevent the multiple groups of vertical bars 211 from approaching or moving away from each other.
[0045] Reference Figure 1 A plurality of mounting holes 11 for placing vertical reinforcements 211 are provided on the original floor slab 1 at intervals. When the vertical reinforcements 211 are installed, structural adhesive is poured into the gap between the vertical reinforcements 211 and the mounting holes 11. The structural adhesive is used to enhance the connection strength between the original floor slab 1 and the vertical reinforcements 211.
[0046] Reference Figure 1 During construction, first, mounting holes 11 are opened on the original floor slab 1, and then the vertical reinforcement 211 is passed through the mounting holes 11, and multiple groups of beam irons 3 are installed on the upper surface of the original floor slab 1 at intervals, and the first transverse reinforcement 212 is used to fix the first end of the vertical reinforcement 211, and the first transverse reinforcement 212 is pressed against the upper surface of the beam iron 3 and fixedly connected; the second transverse reinforcement 213 fixes the other end of the vertical reinforcement 211, and the beam lower iron 4 is placed on the multiple groups of second transverse reinforcement 213 and fixedly connected; at the same time, multiple groups of connecting reinforcements 5 are fixedly connected to the vertical reinforcement 211 of the multiple groups of connecting frames 21, further improving the fixity between the multiple groups of connecting reinforcements 5; then multiple groups of torsion-resistant waist reinforcements 6 are cross-tied to the vertical reinforcement 211, and the stirrups 7 are tied to the multiple groups of vertical reinforcements 211, so as to achieve the fixation of multiple groups of connecting frames 21 on the original floor slab 1.
[0047] Reference Figure 1 After the new beam 8 is filled, the fixing layer 22 is continued to be poured, thereby forming a new beam 8 that is closely connected to the original floor slab 1, and finally improving the connection strength between the new beam 8 and the original structural layer.
[0048] The working principle of the embodiment of this application is as follows:
[0049] The multiple sets of connecting frames 21 are fixed through one end of the original floor slab 1 through the fixing layer 22, and the ends of the multiple sets of connecting frames 21 located at the bottom of the original floor slab 1 are pre-buried in the newly added beam 8, and then the newly added beam 8 is jointly hoisted and fixed by the fixing layer 22 and the original floor slab 1, thereby improving the connection tightness between the newly added beam 8 and the original floor slab 1, and ultimately improving the connection strength between the newly added beam 8 and the original structural layer.
[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A connection structure between an original structural plate and a newly added concrete beam, characterized by: It comprises a connection component (2) arranged on a newly added beam (8) and connected to an original floor slab (1), the connection component (2) comprising: A connecting frame (21), the connecting frame (21) being arranged on the newly added beam (8) and passing through the original floor slab (1) to be connected to an end of the original floor slab (1) away from the newly added beam (8), wherein a plurality of connecting frames (21) are arranged at intervals along the length direction of the newly added beam (8); A fixed layer (22) is provided on one end of the original floor slab (1) away from the newly added beam (8) and is connected to a connecting frame (21) passing through the original floor slab (1) so that the connecting frame (21) is fixed to the original floor slab (1). The fixed layer (22) is connected to multiple groups of connecting frames (21).
2. The connection structure between the original structural plate and the newly added concrete beam according to claim 1, characterized in that: The connecting frame (21) comprises: Vertical reinforcement (211), multiple groups of the vertical reinforcement (211) are arranged at intervals on the newly added beam (8), and the vertical reinforcement (211) passes through the original floor slab (1); a first transverse reinforcement (212), the first transverse reinforcement (212) being arranged on an end of the vertical reinforcement (211) away from the newly added beam (8) and connected to a plurality of groups of vertical reinforcements (211), the first transverse reinforcement (212) being pre-buried in the fixed layer (22); A second transverse reinforcement (213), the second transverse reinforcement (213) is arranged on one end of the vertical reinforcement (211) away from the first transverse reinforcement (212) and connected to multiple groups of vertical reinforcements (211), and the second transverse reinforcement (213) is pre-buried in the newly added beam (8).
3. The connection structure between the original structural plate and the newly added concrete beam according to claim 2, characterized in that: A plurality of groups of beam irons (3) are arranged in the fixed layer (22) at intervals along the width direction of the fixed layer (22); the beam irons (3) are arranged on the original floor slab (1) and support the plurality of groups of first transverse reinforcements (212).
4. The connection structure between the original structural plate and the newly added concrete beam according to claim 3 is characterized by: Multiple groups of beam lower irons (4) are arranged at intervals in the newly added beam (8) along the width direction of the newly added beam (8), and the multiple groups of beam lower irons (4) are all connected to the second transverse reinforcement (213), and the second transverse reinforcement (213) supports the multiple groups of beam lower irons (4).
5. The connection structure between the original structural plate and the newly added concrete beam according to claim 2, characterized in that: Multiple groups of connecting bars (5) are tied to the vertical bars (211) at intervals. The connecting bars (5) are arranged along the length direction of the newly added beam (8) and are used to enhance the connection strength between the newly added beam (8) and the vertical bars (211).
6. The connection structure between the original structural plate and the newly added concrete beam according to claim 2, characterized in that: Multiple groups of anti-torsion waist reinforcements (6) are cross-tied between the multiple groups of vertical reinforcements (211), and the multiple groups of anti-torsion waist reinforcements (6) are used to prevent torsion between the multiple groups of vertical reinforcements (211).
7. The connection structure between the original structural plate and the newly added concrete beam according to claim 2, characterized in that: Stirrups (7) are provided on the side of the multiple groups of vertical bars (211) away from the original floor slab (1); the stirrups (7) and the multiple groups of vertical bars (211) are bound together and used to prevent the multiple groups of vertical bars (211) from approaching or moving away from each other.
8. The connection structure between the original structural plate and the newly added concrete beam according to claim 2, characterized in that: A plurality of mounting holes (11) for placing vertical bars (211) are provided at intervals on the original floor slab (1), and a structural adhesive for enhancing the connection strength between the original floor slab (1) and the vertical bars (211) is poured into the gaps between the vertical bars (211) and the mounting holes (11).
9. The connection structure between the original structural plate and the newly added concrete beam according to claim 1, characterized in that: The original floor slab (1) is provided with a pouring port for facilitating pouring concrete into the newly added beam (8), the pouring port passing through the original floor slab (1) and communicating with the interior of the fixed layer (22).