Connecting joint structure of light prefabricated beam and light prefabricated wall
By designing detachable lightweight prefabricated wall notch and bolt anchor head anchoring technology, the inconvenient operation and material waste of the connection node structure between lightweight prefabricated beams and walls is solved, and efficient, good-strength construction and crack-free concrete molding are achieved.
Patent Information
- Application Number
- CN202420207476.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The existing node structure connecting prefabricated walls and prefabricated beams is inconvenient to operate under light prefabricated conditions, resulting in the disconnection of steel bars and waste of material, poor integrity and strength, and inconsistent concrete pouring time is prone to cracks.
A connection node structure between light prefabricated beams and light prefabricated walls is designed. Light prefabricated walls and light prefabricated beams with a fully prefabricated structure are designed. The top of the light prefabricated walls is equipped with detachable vertical horizontal ribs, and the ends of the light prefabricated beams are overlapped by In the gap, anchoring is carried out through bolt anchor heads to avoid collision and disconnection of steel bars and realize automated construction.
It improves the operational convenience and automation of construction, saves labor and materials, ensures the complete forming of concrete, and avoids crack problems caused by the combination of new and old concrete.
Smart Images
Figure CN222206962U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of assembled buildings, and in particular relates to a connection node structure of a light prefabricated beam and a light prefabricated wall. Background Art
[0002] At present, in the prefabricated building system, most of the prefabricated components are single types, especially the prefabricated beam structures are mostly divided according to spans, with one prefabricated component for each span. When the walls at both ends of the prefabricated beam are also prefabricated, there are many collisions at the connection nodes where the beams and walls meet because the original horizontal distribution reinforcement and horizontal stirrups in the prefabricated walls interfere with the longitudinal reinforcement of the prefabricated beams.
[0003] To facilitate on-site construction, when all prefabricated components are concrete prefabricated components, the concrete within the cross-section of the beam on the concrete prefabricated wall is not prefabricated. This part of the concrete on the wall needs to be poured later, and the beam needs to be prefabricated as a composite beam. Part of the composite beam is prefabricated in the factory and part is cast on site. The lower part of the composite beam is transported to the site after the concrete pouring in the factory is completed. The lower longitudinal reinforcement of the composite beam needs to be disconnected and then connected with another section of steel bars on site using a mechanical sleeve. After the composite beam is placed in place, the upper longitudinal reinforcement of the beam is tied on site. After the tying is completed, the remaining concrete is poured. However, this connection node structure requires the disconnection of steel bars, which is inconvenient to operate, and the reinforcement method wastes materials. At the same time, the integrity is not as good as before, and it is easy to fail to reach the original strength; at the same time, there will be problems such as inconsistent concrete pouring time, which will lead to the combination of new and old concrete, and cracks are easy to occur.
[0004] In addition, when both the wall and the beam are cast-in-place or one is cast-in-place, wooden formwork is used on site. However, the on-site manual steel bar binding process is quite random and cannot save labor, and cannot be industrialized in the factory. Therefore, when the prefabricated components are light prefabricated beams and light prefabricated walls, because there is no concrete in the light prefabricated walls and light prefabricated beams and the concrete is cast and formed at one time on site, the existing prefabricated wall-beam nodes cannot be used for light prefabricated walls and light prefabricated beams, so new light prefabricated wall-beam nodes are required. Utility Model Content
[0005] In order to solve the above technical problems: the existing prefabricated wall and prefabricated beam connection nodes require the disconnection of the structural longitudinal reinforcement of the prefabricated beam connection nodes, which is inconvenient to operate and wastes materials in the reinforcement method. At the same time, the integrity is not as good as before and it is easy to fail to reach the original strength. At the same time, there will be problems such as inconsistent concrete pouring time leading to the combination of new and old concrete, which is easy to cause cracks.
[0006] The utility model provides the following technical solutions:
[0007] A connection node structure of a light prefabricated beam and a light prefabricated wall comprises a light prefabricated wall and a light prefabricated beam. The light prefabricated wall is a fully prefabricated structure. A notch is arranged on the top of the light prefabricated wall. The notch is provided with detachable non-prefabricated horizontal reinforcements perpendicular to the height direction of the wall. The end of the light prefabricated beam is overlapped in the notch of the light prefabricated wall.
[0008] Furthermore, the lightweight prefabricated wall includes a plurality of first longitudinal bars along the height direction of the wall and a plurality of first wall stirrups perpendicular to the first longitudinal bars, and the plurality of first wall stirrups fix the plurality of first longitudinal bars together.
[0009] Furthermore, the lightweight prefabricated wall also includes a first truss arranged between the first longitudinal reinforcements.
[0010] Furthermore, the lightweight prefabricated wall includes a second truss along the height direction of the wall and a plurality of second wall stirrups perpendicular to the height direction of the second truss, and the plurality of second wall stirrups fix the second trusses together.
[0011] Furthermore, the lightweight prefabricated beam includes a plurality of second longitudinal bars along the length direction of the beam body, beam stirrups perpendicular to the second longitudinal bars, waist bars parallel to the second longitudinal bars are arranged between the upper and lower second longitudinal bars, and the beam stirrups fix the second longitudinal bars and waist bars together.
[0012] Furthermore, the lightweight prefabricated beam also includes a plurality of bayonet connection plates, which are arranged below the waist reinforcement at the connection between the waist reinforcement and the beam stirrups.
[0013] Furthermore, bolt anchor heads are provided at the ends of the second longitudinal reinforcement and waist reinforcement.
[0014] Furthermore, the end of the waist reinforcement is located inside the end of the second longitudinal reinforcement.
[0015] Furthermore, the ends of the light prefabricated beams are free ends without beam stirrups, wherein the depth of the second longitudinal reinforcement extending into the notch of the light prefabricated wall is at least the basic anchorage length l abe 0.4 times of.
[0016] Furthermore, the depth of the waist reinforcement extending into the notch of the lightweight precast wall is at least the basic anchorage length l abe 0.4 times of.
[0017] Compared with the prior art, the utility model has the following beneficial effects:
[0018] (1) The light prefabricated beam of the utility model is a fully prefabricated structure, and the light prefabricated wall is a partially prefabricated structure, wherein the horizontal reinforcement in the notch of the light prefabricated wall is a non-prefabricated structure and can be disassembled. After the light prefabricated wall is installed, the end of the light prefabricated beam is overlapped in the notch, and then the horizontal reinforcement in the notch is installed and assembled, without cutting the longitudinal reinforcement of the light prefabricated beam. The operation is convenient, the degree of automation is high, labor and material are saved, and the strength is good. After the installation of the light prefabricated wall and the light prefabricated beam is completed, concrete pouring is carried out, and the concrete pouring is formed in one piece without cracks.
[0019] (2) Bolt anchor heads are provided at the ends of the second longitudinal reinforcement and waist reinforcement. The bolt anchor heads are used to anchor the second longitudinal reinforcement and waist reinforcement, so that the second longitudinal reinforcement and waist reinforcement of the light prefabricated beam are straight steel bars, thereby avoiding the collision between the second longitudinal reinforcement and waist reinforcement of the light prefabricated beam and the steel bars in the light prefabricated wall, and facilitating the on-site installation and construction of the light prefabricated beam. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic elevation diagram of the connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall in the first embodiment of the utility model;
[0021] Figure 2 It is a cross-sectional schematic diagram of a connection node structure of a lightweight prefabricated beam and a lightweight prefabricated wall in a first embodiment of the present utility model, viewed from a top view;
[0022] Figure 3 It is a cross-sectional schematic diagram of a light prefabricated beam of Embodiment 1 of the present utility model from a side view angle;
[0023] Figure 4 This is a schematic elevation diagram of the construction step 1 of the connection node structure of the first embodiment of the utility model;
[0024] Figure 5 This is a schematic elevation view of the second construction step of the connection node structure of the first embodiment of the utility model;
[0025] Figure 6 This is a vertical schematic diagram of the construction step three of the connection node structure of the first embodiment of the utility model;
[0026] Figure 7 This is a schematic elevation diagram of a connection node structure of a lightweight prefabricated beam and a lightweight prefabricated wall in Embodiment 2 of the present utility model;
[0027] Figure 8 It is a cross-sectional schematic diagram of a connection node structure of a lightweight prefabricated beam and a lightweight prefabricated wall in a second embodiment of the present utility model from a top view angle;
[0028] Reference numerals:
[0029] 1-First type of wall; 11-Exterior wall longitudinal reinforcement; 12-Middle longitudinal reinforcement; 13-Interior wall longitudinal reinforcement; 14-Wall stirrup one; 15-Wall stirrup two; 16-First truss; 2-Notch; 3-Light precast beam; 31-Upper longitudinal reinforcement; 32-Waist reinforcement; 33-Lower longitudinal reinforcement; 34-Beam stirrup; 35-Bayonet connection plate; 4-Bolt anchor head; 5-Second type of wall; 51-Second truss; 52-Wall stirrup three. DETAILED DESCRIPTION
[0030] The technical solution of the utility model will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of the utility model.
[0031] It should be noted that the terms "center", "up", "down", "horizontal", "left", "right", "front", "back", "lateral", "longitudinal", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0032] Embodiment 1
[0033] Combined with Figure 1 , Figure 2 , Figure 3 As shown, the utility model provides a connection node structure of a light prefabricated beam and a light prefabricated wall, including a light prefabricated wall and a light prefabricated beam 3. A detachable notch structure is provided in the light prefabricated wall, and the notch is used to overlap the end of the light prefabricated beam 3.
[0034] "Light prefabrication" is a prefabricated assembly process with integrated formwork (double-sided free of disassembly), integrated steel bars, and integrated insulation. Through the optimization and innovation of materials, processes, procedures, and methods, the steel bars, insulation, and formwork of the building body are assembled into building components in the factory, assembled into a steel bar formwork skeleton on site, and poured in one-time concrete. This utility model only describes the steel bar structure in the light prefabricated wall and light prefabricated beam components, and does not introduce the rest.
[0035] The light prefabricated wall of this embodiment includes a first wall 1. When the light prefabricated wall is the first wall 1, it includes both longitudinal reinforcement and a vertical first truss 16. Figure 2 As shown, the light prefabricated beam 3 of this embodiment and the first wall 1 are an "I"-shaped structure when viewed from a top view, and the thickness of the wall is equal to the width of the beam.
[0036] Specifically, the first wall 1 is a steel bar structure, including a plurality of first longitudinal bars along the height direction of the wall, and a plurality of first wall stirrups perpendicular to the first longitudinal bars, such as Figure 1 As shown, the first longitudinal reinforcement includes an outer wall longitudinal reinforcement 11, an inner wall longitudinal reinforcement 13 and a middle longitudinal reinforcement 12 located between the outer wall longitudinal reinforcement 11 and the inner wall longitudinal reinforcement 13, and the first wall stirrup includes a wall stirrup 14 and a wall stirrup 2 15. The length of the wall stirrup 14 is greater than that of the wall stirrup 2 15. Multiple wall stirrups 14 and wall stirrups 2 15 together fix the outer wall longitudinal reinforcement 11, the inner wall longitudinal reinforcement 13 and the middle longitudinal reinforcement 12 together.
[0037] The first type of wall 1 also includes a vertical first truss 16, which is used to hold the steel mesh molds on both sides of the wall (the steel mesh molds are non-stress-bearing structures, which are prefabricated structures and are used to constrain concrete). Therefore, the outer wall longitudinal reinforcement 11, the inner wall longitudinal reinforcement 13, the middle longitudinal reinforcement 12, the wall stirrup 14, the wall stirrup 2 15, and the first truss 16 together constitute the first type of wall 1.
[0038] The first type of wall 1 is a partially prefabricated wall, and there are no wall stirrups 14 and 15 in the gap. The wall stirrups in the gap are not automatically welded in the factory. This part of the wall stirrups should be manually tied on-site by on-site construction workers after the light prefabricated beam 3 falls and is installed in place; the rest of the first type of wall 1 is automatically welded together in the factory.
[0039] The light prefabricated beam 3 is a steel bar structure, and the light prefabricated beam 3 is a fully prefabricated beam, which does not need to be divided into a prefabricated layer and a cast-in-place layer, and does not need to be additionally tied with steel bars on site. The steel bars in the light prefabricated beam 3 of this embodiment do not need to be cut or reinforced.
[0040] The connection node structure between the light prefabricated beam 3 and the light prefabricated wall of this embodiment does not need to cut off the longitudinal reinforcement of the light prefabricated beam 3, is easy to operate, has a high degree of automation, saves labor and materials, and has good strength.
[0041] like Figure 1 As shown, the light prefabricated beam 3 includes a plurality of second longitudinal bars along the length direction of the beam body, a plurality of beam stirrups 34 perpendicular to the second longitudinal bars, the second longitudinal bars include upper longitudinal bars 31 and lower longitudinal bars 33, waist bars 32 parallel to the second longitudinal bars are arranged between the upper longitudinal bars 31 and the lower longitudinal bars 33, the number of rows of waist bars 32 is two, the length of waist bars 32 is shorter than the length of the second longitudinal bars, and the end of waist bars 32 is located inside the end of the second longitudinal bars. A plurality of beam stirrups 34 fix and connect the upper longitudinal bars 31, the lower longitudinal bars 33, and the waist bars 32 as a whole.
[0042] The spacing of the stirrups 34 on the light prefabricated beam 3 near the first wall 1 is smaller than the spacing of the stirrups 34 on the beam far from the first wall 1 .
[0043] Bolt anchor heads 4 are provided at the ends of the upper longitudinal reinforcement 31, the lower longitudinal reinforcement 33 and the waist reinforcement 32. The upper longitudinal reinforcement 31, the lower longitudinal reinforcement 33 and the waist reinforcement 32 are anchored by the bolt anchor heads 4, so that the upper longitudinal reinforcement 31, the lower longitudinal reinforcement 33 and the waist reinforcement 32 of the light prefabricated beam 3 are all straight steel bars, thereby avoiding the collision between the upper longitudinal reinforcement 31, the lower longitudinal reinforcement 33 and the waist reinforcement 32 in the light prefabricated beam 3 and the steel bars in the first wall 1, and facilitating the on-site installation and construction of the light prefabricated beam 3.
[0044] The depth L1 of the upper longitudinal reinforcement 31 and the lower longitudinal reinforcement 33 of the light prefabricated beam 3 extending into the inner side of the first wall 1 is at least the basic anchoring length l abe The depth L2 of the waist reinforcement 32 extending into the first wall 1 is at least 0.4 times of the basic anchoring length l abe The beam body extending into the wall is a free end, and this part has no stirrups 34.
[0045] like Figure 3 As shown, a bayonet connection piece 35 is provided below the intersection of the waist reinforcement 32 and each beam stirrup 34, wherein, as shown in FIG. Figure 2 As shown, in the dense area of the beam stirrups 34, a bayonet connection piece 35 can be provided for each beam stirrup 34, and multiple bayonet connection pieces 35 are used to carry the waist reinforcement 32. Thus, the upper longitudinal reinforcement 31, the lower longitudinal reinforcement 33, the waist reinforcement 32, the beam stirrups 34, and the bayonet connection pieces 35 together form the light prefabricated beam 3.
[0046] Construction steps
[0047] Step 1, such as Figure 4 As shown, the first wall 1 component is installed, wherein the connection range between the first wall 1 and the light prefabricated beam 3 is the gap 2, and the wall stirrup 1 14 and the wall stirrup 2 15 in the gap 2 are not prefabricated;
[0048] Step 2, such as Figure 5 As shown, a light prefabricated beam 3 component is overlapped at the gap 2 of the first wall 1;
[0049] Step three, such as Figure 6 As shown, wall stirrups 14 and 15 are manually tied around the gap 2 of the first wall 1 .
[0050] After the lightweight prefabricated beam 3 is combined with the first type of wall 1, the on-site concrete is poured in one piece without the need for secondary pouring. There is no problem of combining new and old concrete, and cracks are not easily generated.
[0051] Embodiment 2
[0052] Different from the first embodiment,
[0053] Combination Figure 7 , Figure 8As shown, the light prefabricated wall of this embodiment includes a second wall body 5. When the light prefabricated wall is the second wall body 5, the second wall body 5 only includes a vertical second truss 51 and a plurality of second wall stirrups 52 perpendicular to the height direction of the second truss 51. The plurality of second wall stirrups 52 fix the second trusses 51 together, and there is no longitudinal steel bar.
[0054] like Figure 8 As shown, the light prefabricated beam 3 of this embodiment and the second wall 5 are a "T"-shaped structure when viewed from a top view. The second wall 5 is also provided with a notch structure. The second wall stirrups 52 in the notch structure are non-prefabricated structures. The second wall stirrups 52 are manually welded after the beam and the wall are overlapped.
[0055] The depth L3 of the upper longitudinal reinforcement 31 and the lower longitudinal reinforcement 33 of the light prefabricated beam 3 extending into the inner side of the second wall 5 is at least the basic anchoring length l abe The depth L4 of the waist reinforcement 32 extending into the second wall 5 is at least 0.4 times of the basic anchoring length l abe 0.4 times of.
[0056] The above technical features constitute the best implementation example of the present utility model, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the needs of different situations.
[0057] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.
Claims
1. A connection node structure of a lightweight prefabricated beam and a lightweight prefabricated wall, characterized in that: It includes light prefabricated walls and light prefabricated beams. The light prefabricated walls are fully prefabricated structures. A notch is arranged on the top of the light prefabricated wall. The notch is provided with detachable non-prefabricated horizontal reinforcements perpendicular to the height direction of the wall. The ends of the light prefabricated beams are overlapped in the notch of the light prefabricated wall.
2. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 1 is characterized in that: The light prefabricated wall comprises a plurality of first longitudinal bars along the height direction of the wall and a plurality of first wall stirrups perpendicular to the first longitudinal bars. The plurality of first wall stirrups fix and connect the plurality of first longitudinal bars together.
3. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 2 is characterized in that: The lightweight prefabricated wall further includes a first truss disposed between the first longitudinal bars.
4. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 1 is characterized in that: The light prefabricated wall comprises a second truss along the height direction of the wall body and a plurality of second wall stirrups perpendicular to the height direction of the second truss. The plurality of second wall stirrups fix and connect the second trusses together.
5. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 2 or 4, characterized in that: The light prefabricated beam includes a plurality of second longitudinal bars along the length direction of the beam body and beam stirrups perpendicular to the second longitudinal bars. Waist bars parallel to the second longitudinal bars are arranged between the upper and lower second longitudinal bars. The beam stirrups fix the second longitudinal bars and the waist bars together.
6. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 5, characterized in that: The light prefabricated beam also includes a plurality of bayonet connection plates, which are arranged below the waist reinforcement at the connection between the waist reinforcement and the beam stirrups.
7. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 5, characterized in that: Bolt anchor heads are provided at the ends of the second longitudinal reinforcement and waist reinforcement.
8. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 7, characterized in that: The end of the waist reinforcement is located inside the end of the second longitudinal reinforcement.
9. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 8, characterized in that: The end of the light precast beam is a free end, and the depth of the second longitudinal reinforcement extending into the notch of the light precast wall is at least the basic anchorage length l abe 0.4 times of.
10. The connection node structure of the lightweight prefabricated beam and the lightweight prefabricated wall according to claim 8, characterized in that: The depth of the waist reinforcement extending into the notch of the lightweight precast wall is at least the basic anchorage length l abe 0.4 times of.