Connecting joint of structural beam and fair-faced concrete wall
By using the combination of upper and lower rows of connecting ribs and foam board formwork in the connection of structural beams and clean water concrete walls, the problem that traditional anchor rib method requires openings to affect construction efficiency is solved, and efficient connection and smooth surface effect is achieved.
Patent Information
- Application Number
- CN202422765801.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-13
AI Technical Summary
In the construction of clean water concrete walls, when using the traditional anchor bar method to connect structural beams, holes need to be made in the formwork, resulting in high construction accuracy requirements and affecting construction efficiency.
The connecting ribs are arranged at intervals between the upper and lower rows. When the structural beam is poured, the lower connecting ribs are bent upwards. Combined with foam boards or extruded boards as additional templates to avoid pre-opening, connect with connecting ribs, cover the joint positions with plastic film, and use a stopper to support the additional templates to ensure construction accuracy and efficiency.
It realizes connection without pre-opening, improves construction efficiency, ensures the close connection between structural beams and clean water concrete walls and surface flatness, and avoids slurry leakage.
Smart Images
Figure CN223305175U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of concrete component connection, in particular to a connection node between a structural beam and a plain concrete wall. Background Art
[0002] The quality requirements for bonding new and old concrete require not only high bond strength but also the prevention of cracking at the interface when the new and old concrete shrink. Because the old concrete has already completed its shrinkage, while the new concrete has just begun, the shrinkage of the new and old concrete will inevitably cause shear or tensile cracks at the interface. This not only prevents the new and old concrete from working together, but also compromises the impermeability and durability of the reinforced concrete.
[0003] Construction sites often use anchor bars to strengthen the bond between new and old concrete. This method involves pre-embedding anchor bars into the old concrete to connect it to the new concrete. After embedding the anchor bars, holes corresponding to the anchor bars must be drilled in the formwork. These holes must be drilled with high precision to prevent the anchor bars from passing through.
[0004] During the construction of buildings with exposed concrete walls as exterior decorative surfaces, the exterior walls need to be connected to the main structure, and the connection volume is large. The traditional anchor reinforcement method is used for construction, and many template opening operations are required, which affects construction efficiency. Utility Model Content
[0005] The purpose of the utility model is to provide a connection node between a structural beam and a plain concrete wall, so as to solve the problem in the above-mentioned background technology that when connecting two concrete components by the anchor reinforcement method, corresponding holes need to be opened on the template, the construction accuracy requirements are high, and the construction efficiency is affected.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A connection node between a structural beam and a bare concrete wall, comprising a structural beam, a wall, connecting bars, and a beam side form; the inner end of the connecting bar is pre-embedded in the structural beam, and the outer end extends out of the structural beam and is connected to the wall; the beam side form is arranged on the outer side of the structural beam;
[0008] The connecting bars include two rows of steel bars spaced apart from each other; when the structural beam is cast, the outer ends of the connecting bars in the lower row are bent upward and fit against the outer wall of the structural beam, while the connecting bars in the upper row extend straight; when the structural beam is cast, both the connecting bars in the upper row and the connecting bars in the lower row are arranged straight;
[0009] The beam side formwork includes a main formwork and an additional formwork. The additional formwork is arranged on the main formwork and corresponds to the upper row of connecting ribs. The additional formwork is a foam board or an extruded board.
[0010] Furthermore, a barrier rod is rotatably provided on the outer side of the main template, and the barrier rod has two position states: corresponding to the additional template or misaligned.
[0011] Furthermore, a plastic film is attached to the inner side of the additional template, and the plastic film covers the connection position between the main template and the additional template.
[0012] Furthermore, both ends of the connecting bar are respectively connected to the steel bars in the structural beam and the steel bars in the wall.
[0013] Furthermore, a connecting section is provided between the wall and the structural beam. The connecting section is a concrete structure, the top and bottom surfaces of which are flush with the structural beam, and the side surfaces are respectively in contact with the structural beam and the wall.
[0014] Furthermore, the inner and outer side surfaces of the main template and the additional template are arranged flush.
[0015] Furthermore, the end portion of the connecting rib located inside the wall is bent to form a bent portion.
[0016] The utility model has the following beneficial effects:
[0017] 1. The utility model provides a connection node between a structural beam and a plain concrete wall, in which two rows of connecting bars are arranged upper and lower. When the structural beam is cast, the connecting bars in the lower row are bent upward so that the lower connecting bars do not need to pass through the beam side formwork; the beam side formwork is split into a main formwork and an additional formwork, and a foam board or an extruded board is used as the additional formwork, which is opposite to the connecting bars in the upper row. The connecting bars can be directly inserted into the holes on site without pre-drilling holes, thereby reducing construction accuracy and improving construction efficiency.
[0018] 2. The utility model provides a connection node between a structural beam and a plain concrete wall, wherein a plastic film is attached to the inner side of an additional formwork, and the plastic film covers the connection position between the main formwork and the additional formwork to prevent mortar leakage at the joint position.
[0019] 3. The utility model provides a connection node between a structural beam and a plain concrete wall. A retaining rod is provided on the outside of the main formwork, which can provide support for the additional formwork, prevent it from displacement, and ensure the casting effect of the structural beam. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the installation of the beam side formwork involved in the present utility model;
[0021] Figure 2 This is a schematic diagram of the connection between the structural beam and the vertical wall involved in the present utility model;
[0022] Figure 3 This is a schematic diagram of the connection between the structural beam and the inclined wall involved in the present utility model.
[0023] In the figure: 1-structural beam, 2-wall, 3-connecting reinforcement, 4-main formwork, 5-additional formwork, 6-connecting section. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0025] like Figure 1 、 2 As shown, the utility model provides a connection node between a structural beam and a plain concrete wall, comprising a structural beam 1, a wall 2, connecting ribs 3 and a beam side form; the inner end of the connecting rib 3 is embedded in the structural beam 1, and the outer end extends out of the structural beam 1 and is connected to the wall 2, and the connecting rib 3 comprises two rows of upper and lower rows of steel bars arranged at intervals. When the structural beam 1 is cast, the outer ends of the lower row of connecting ribs 3 are bent upward and fit against the outer wall of the structural beam 1, and the upper row of connecting ribs 3 extends straight out; when the casting of the structural beam 1 is completed, the upper row of connecting ribs 3 and the lower row of connecting ribs 3 are both arranged straight; the beam side form is arranged on the outside of the structural beam 1 and is used for casting the structural beam 1, comprising a main formwork 4 and an additional formwork 5, the additional formwork 5 is arranged on the main formwork 4, and corresponds to the upper row of connecting ribs 3, and the upper row of connecting ribs 3 is punched out from the additional formwork 5.
[0026] like Figure 2 、 3 As shown, wall 2 can be a vertical concrete wall or an inclined concrete wall. The outer side of structural beam 1 is a vertical surface. A connecting section 6 is provided between wall 2 and structural beam 1. Connecting section 6 is a concrete structure. Its top and bottom surfaces are flush with structural beam 1, and its side surfaces are respectively aligned with structural beam 1 and wall 2, tightly connecting structural beam 1 and wall 2 into one.
[0027] The additional formwork 5 is a foam board or an extruded board, and the upper row of connecting ribs 3 can be temporarily perforated without pre-perforation, which reduces the difficulty of construction. The main formwork 4 and the additional formwork 5 are connected. Preferably, a baffle is provided on the outside of the main formwork 4. After the additional formwork 5 is installed in place, the baffle is rotated to the outside of the additional formwork 5 to prevent the additional formwork 5 from being offset. When removing the accessory formwork, the baffle is first rotated to dislocate the baffle from the additional formwork 5, so as to achieve rapid disassembly of the additional formwork 5. A plastic film is attached to the inside of the additional formwork 5, and the plastic film covers the connection position of the main formwork 4 and the additional formwork 5 to prevent leakage at the joint position. The inner and outer sides of the main formwork 4 and the additional formwork 5 are flush to ensure the surface flatness of the structural beam 1.
[0028] The ends of the connecting bars 3 are connected to the steel bars in the structural beam 1 and the steel bars in the wall 2, respectively. The ends of the connecting bars 3 located inside the wall 2 are bent to form a curved portion, enhancing the connection strength. Preferably, the upper row of connecting bars 3 bend downward, while the lower row of connecting bars 3 bend upward. The curved portions of the upper and lower rows of connecting bars 3 lie on the same straight line and are parallel to the surface of the wall 2.
[0029] During construction, first tie the steel bars of the structural beam 1, embed the connecting bars 3 in the structural beam 1, and bend the lower row of connecting bars 3 that extend beyond the structural beam 1 upward; then install the casting formwork of the structural beam 1, assemble the beam side formwork, fix the main formwork 4, and then put the additional formwork 5 on the upper row of connecting bars 3. After it is installed in place, rotate the retaining rod so that it is opposite to the additional formwork 5, and then pour the concrete of the structural beam 1; after the structural beam 1 is formed, rotate the retaining rod so that it is misaligned with the additional formwork 5, remove the additional formwork 5 and the main formwork 4 in turn, and lay the lower row of connecting bars 3 flat; then, tie the steel bars of the wall 2, support the formwork, bend the ends of the connecting bars 3 and connect them to the steel bars of the wall 2; finally, pour the concrete of the wall 2 and the connecting section 6.
[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A connection node between a structural beam and a bare concrete wall, characterized by: It comprises a structural beam (1), a wall (2), connecting bars (3) and a beam side form; the inner end of the connecting bar (3) is pre-buried in the structural beam (1), and the outer end extends out of the structural beam (1) and is connected to the wall (2); the beam side form is arranged outside the structural beam (1); The connecting bars (3) include two upper and lower rows of steel bars spaced apart; when the structural beam (1) is cast, the outer ends of the connecting bars (3) in the lower row are bent upward and fit against the outer wall of the structural beam (1), and the connecting bars (3) in the upper row are extended straight; when the structural beam (1) is cast, the connecting bars (3) in the upper row and the connecting bars (3) in the lower row are both arranged straight; The beam side formwork comprises a main formwork (4) and an additional formwork (5); the additional formwork (5) is arranged on the main formwork (4) and corresponds to the upper row of connecting ribs (3); the additional formwork (5) is a foam board or an extruded board.
2. The connection node between a structural beam and a bare concrete wall according to claim 1, characterized in that: A blocking rod is rotatably arranged on the outside of the main template (4), and the blocking rod has two position states: corresponding to the additional template or misaligned.
3. The connection node between a structural beam and a bare concrete wall according to claim 1, characterized in that: A plastic film is attached to the inner side of the additional template (5), and the plastic film covers the connection position between the main template (4) and the additional template (5).
4. The connection node between a structural beam and a bare concrete wall according to claim 1, characterized in that: The two ends of the connecting bar (3) are respectively connected to the inner steel bars of the structural beam (1) and the inner steel bars of the wall (2).
5. The connection node between a structural beam and a bare concrete wall according to claim 1, characterized in that: A connecting section (6) is provided between the wall (2) and the structural beam (1); the connecting section (6) is a concrete structure, the top and bottom surfaces of which are flush with the structural beam (1), and the side surfaces thereof are respectively in contact with the structural beam (1) and the wall (2).
6. The connection node between a structural beam and a bare concrete wall according to claim 1, characterized in that: The inner and outer side surfaces of the main template (4) and the additional template (5) are both flush.
7. The connection node between a structural beam and a bare concrete wall according to claim 1, characterized in that: The end of the connecting rib (3) located inside the wall (2) is bent to form a bent portion.