Connecting joint of fabricated wallboard structure

Abstract

The utility model discloses a connecting node of an assembly type wallboard structure, which comprises two prefabricated wallboards in butt joint, longitudinal steel bars and horizontal steel bars are arranged in the prefabricated wallboards, one prefabricated wallboard or two prefabricated wallboards are provided with a prefabricated outer template at the butt joint position, the prefabricated outer template is positioned on the side surface, facing outdoors, of the prefabricated wallboards, and the prefabricated outer template is provided with an outer template. A post-cast concrete section formed by cast-in-place concrete is arranged on the inner side of the prefabricated outer formwork, truss steel bars which are sequentially arranged from top to bottom are anchored on the prefabricated outer formwork, parts of the truss steel bars are embedded in the post-cast concrete section, parts of the horizontal steel bars are embedded in the post-cast concrete section, additional longitudinal bars and additional hoops are further arranged in the post-cast concrete section, and the additional longitudinal bars and the additional hoops are connected with the truss steel bars. The lower ends of the additional longitudinal bars are welded to the wall longitudinal bars on the lower layer in a single-face mode, and the additional longitudinal bars and the additional hoops are bound together. When cast-in-place is carried out, an outdoor formwork does not need to be additionally built, construction is faster, the strength of connecting joints is high, and the workload of on-site wet operation can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of assembled walls, and in particular to a connection node of an assembled wall panel structure. The connection node can be used in multi-story buildings, and is particularly suitable for fully assembled residences, apartments and office buildings. Background Art

[0002] In recent years, prefabricated buildings have developed rapidly in my country. Domestic and foreign scholars have conducted multi-faceted research on the system innovation of prefabricated wall panel structures and the boundary connection technology of prefabricated wall panels, and have achieved certain results.

[0003] In the prefabricated wall panel structure, the connection nodes between prefabricated wall panels are one of the important technologies that need attention and breakthroughs.

[0004] At present, the connection nodes in prefabricated wall panel structures can be divided into two types: dry connection and wet connection. Commonly used dry connections on construction sites include bolt connection, box connection, connection plate welding, etc. Dry connection has the advantages of fast construction speed, low construction process difficulty, energy saving and environmental protection. Dry connection can be made into three types: hinged connection, semi-hinged connection and rigid connection. However, the force transmission of dry connection joints is different from that of cast-in-place concrete, and it is usually difficult to achieve the same as cast-in-place.

[0005] Therefore, wet connection is selected in many connection nodes of prefabricated wall panel structures. Wet connection refers to the connection method of using cast-in-place concrete or grouting to fill the splicing parts of the main longitudinal force-bearing steel bars between prefabricated components. However, in order to meet the requirements of earthquake-resistant design and construction, the existing connection nodes using wet connection need to have a large wet connection area, which requires a large number of formworks to be erected on site, a large area of ​​on-site concrete pouring, and a large workload of wet operations, which cannot reflect the advantages of prefabricated buildings.

[0006] Therefore, it is hoped to study a fully assembled wall panel system with only a small amount of wet work on site and the connections between prefabricated wall panels can meet the seismic design requirements. Utility Model Content

[0007] The utility model aims to provide a connection node of an assembled wall panel structure, which does not need to set up an outdoor formwork during on-site pouring, and the construction is faster. The connection node has high strength and can reduce the workload of wet operations on site.

[0008] The purpose of the utility model is achieved through the following technical solutions:

[0009] A connection node of an assembled wall panel structure, comprising two prefabricated wall panels connected relative to each other, wherein longitudinal reinforcement and horizontal reinforcement are arranged in the prefabricated wall panels, and characterized in that: one of the prefabricated wall panels or two prefabricated wall panels are provided with a prefabricated outer formwork for on-site pouring of a post-cast concrete section at the joint, the prefabricated outer formwork is located on the side of the prefabricated wall panel facing the outdoors, the inner side of the prefabricated outer formwork is a post-cast concrete section formed by pouring concrete on-site, truss reinforcement bars arranged in sequence up and down are anchored on the prefabricated outer formwork, part of the truss reinforcement bars are buried in the post-cast concrete section, part of the horizontal reinforcement bars pass through the prefabricated wall panels and are buried in the post-cast concrete section, additional longitudinal reinforcement and additional hoop are also provided in the post-cast concrete section, the lower end of the additional longitudinal reinforcement is single-sidedly welded to the wall longitudinal reinforcement of the lower layer, and the additional longitudinal reinforcement and the additional hoop are bound together.

[0010] Furthermore, the end of the horizontal steel bar embedded in the post-cast concrete section is provided with a vertically bent hook.

[0011] Furthermore, the horizontal steel bars include horizontal steel bars on the outside of the wall and horizontal steel bars on the inside of the wall. The horizontal steel bars on the outside of the wall and the horizontal steel bars on the inside of the wall are respectively close to the outer side and inner side of the prefabricated wall panel, and part of the horizontal steel bars on the outside of the wall extends into the prefabricated outer formwork.

[0012] Furthermore, the joints of the two prefabricated wall panels that are connected to each other are filled with waterproof grease.

[0013] Furthermore, it also includes a reinforcing hoop, a part of which is embedded in the prefabricated wall panel, and the other part is embedded in the post-cast concrete section.

[0014] Furthermore, the additional longitudinal reinforcement is arranged on the inner sides of the four corners of the additional hoop.

[0015] Furthermore, the truss reinforcement is in a V-shape, an end portion of which is embedded in the prefabricated outer formwork, and the remaining portion is embedded in the post-cast concrete section.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The utility model provides a prefabricated outer formwork prefabricated together with the prefabricated wall panel, and the prefabricated outer formwork is located on the side of the prefabricated wall panel facing the outside. When pouring, the prefabricated outer formwork can be used as the outdoor side formwork of the post-poured concrete section, so there is no need to build an outdoor formwork separately, which reduces the construction of on-site formwork and makes the construction faster.

[0018] 2. The utility model is provided with truss steel bars, additional longitudinal bars and additional hoops at the post-cast concrete section of the connection node, and part of the horizontal steel bars extends into the post-cast concrete section, so that the strength of the connection node is higher. Therefore, while meeting the design strength, the area of ​​the post-cast concrete section can be designed to be smaller, thereby reducing the workload of wet work on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the connection node of the first embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the first embodiment of the utility model when the connection nodes are not yet connected;

[0021] Figure 3 This is a schematic diagram of the structure of the connection node of the second embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the second embodiment of the utility model when the connection nodes are not yet connected;

[0023] Figure 5 This is a schematic diagram of the structure of the connection node of the third embodiment of the present utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the third embodiment of the utility model when the connection nodes are not yet connected;

[0025] Figure 7 This is a schematic diagram of the structure of the connection node of the fourth embodiment of the present utility model;

[0026] Figure 8 It is a structural diagram of the fourth embodiment of the present utility model when the connection nodes are not yet connected.

[0027] Meaning of reference numerals in the figure:

[0028] 1- Prefabricated wall panels; 2- Longitudinal reinforcement; 3- Horizontal reinforcement inside the wall; 4- Horizontal reinforcement outside the wall; 5- Post-cast concrete section; 6- Prefabricated external formwork; 7- Truss reinforcement; 8- Additional hoop; 9- Additional longitudinal reinforcement; 10- Waterproof paste; 11- Reinforcement hoop; 12- Hook. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with embodiments.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and 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 present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] Embodiment 1:

[0034] like Figure 1 and Figure 2 The connection node of the assembled wall panel structure of the first embodiment is shown, which is a vertical connection node of an L-shaped wall, and includes two prefabricated wall panels 1 that are connected to each other, and the two prefabricated wall panels 1 are vertically connected to each other.

[0035] Longitudinal steel bars 2 and horizontal steel bars are provided in the prefabricated wall panel 1, wherein the horizontal steel bars include horizontal steel bars 4 on the outside of the wall and horizontal steel bars 3 on the inside of the wall. The horizontal steel bars 4 on the outside of the wall and the horizontal steel bars 3 on the inside of the wall are respectively close to the outer side surface and the inner side surface of the prefabricated wall panel 1, and the longitudinal steel bars 2 are also arranged close to the outer side surface and the inner side surface of the prefabricated wall panel 1.

[0036] One of the prefabricated wall panels 2 is provided with a prefabricated outer formwork 6 at the joint, which is prefabricated and formed together with the prefabricated wall panel 1. The prefabricated outer formwork 6 is located on the side of the prefabricated wall panel 1 facing the outdoors and is used as a formwork for the outdoor side of the post-cast concrete section. The other prefabricated wall panel 1 is provided with a reinforcing hoop 11 perpendicular thereto at the joint, a part of which is embedded in the prefabricated wall panel 1 and the other part extends out of the prefabricated wall panel.

[0037] The joint between the prefabricated outer formwork 6 and the prefabricated wallboard 1 is filled with waterproof paste 10. The inner side of the prefabricated outer formwork 6 is a post-cast concrete section 5 formed by pouring concrete on site, and the part of the reinforcing hoop 11 extending out of the prefabricated wallboard 1 is buried in the post-cast concrete section 5.

[0038] A plurality of truss steel bars 7 are anchored on the prefabricated outer formwork 6, and the plurality of truss steel bars 7 are arranged in sequence up and down. The truss steel bars 7 of this embodiment are V-shaped, and their ends are embedded in the prefabricated outer formwork 6, and the remaining parts are embedded in the post-cast concrete section 5. The truss steel bars 7 can strengthen the connection between the new and old concrete.

[0039] In this embodiment, part of the horizontal reinforcement 4 on the outside of the wall extends into the prefabricated outer formwork 6, which can increase the strength of the prefabricated outer formwork 6. Part of the horizontal reinforcement 3 on the inside of the wall passes through the side of the prefabricated wall panel 1 and is embedded in the post-cast concrete section 5. The end of the horizontal reinforcement 3 on the inside of the wall embedded in the post-cast concrete section is provided with a vertically bent hook 12, which can strengthen the connection.

[0040] A plurality of additional longitudinal bars 9 and a plurality of additional hoops 8 are also provided in the post-cast concrete section 5. The additional hoops 8 are arranged in sequence from top to bottom. The additional longitudinal bars 9 are arranged inside the four corners of the additional hoops 8. The additional longitudinal bars 9 and the additional hoops 8 are tied together. The lower end of the additional longitudinal bars 9 is single-sidedly welded to the wall longitudinal bars of the lower layer.

[0041] The construction steps of the connection nodes of the assembled wall panel structure of this embodiment are as follows:

[0042] Step 1. In a factory, a prefabricated wall panel 1 is prepared, wherein longitudinal steel bars 2 and horizontal steel bars are arranged inside the prefabricated wall panel 1, and a prefabricated outer formwork 6 is formed on the corresponding prefabricated wall panel 1, and a truss steel bar 7 is anchored on the prefabricated outer formwork 6, and a reinforcing hoop 11 is anchored on another prefabricated wall panel 1, and a part of the horizontal steel bar 3 on the inner side of the wall extends to the inner side of the prefabricated outer formwork 6;

[0043] Step 2. hoist and install the prefabricated wall panel 1 in place at the construction site, temporarily fix it, and fill the joint between the prefabricated outer formwork 6 and the prefabricated wall panel 1 with waterproof paste 10;

[0044] Step 3. Arrange the additional hoops 8 in the recesses formed on the inner side of the prefabricated outer template 6 according to the actual number;

[0045] Step 4. Insert the additional longitudinal reinforcement 9, and weld the lower end of the additional longitudinal reinforcement 9 to the lower wall longitudinal reinforcement on one side;

[0046] Step 5. Tie and position the additional longitudinal reinforcement 9 and the additional hoop 8;

[0047] Step 6. Seal the template inside the notch, and use the prefabricated outer template 6 as the outer template of the notch;

[0048] Step 7: pouring concrete or grouting material into the recess to form a post-cast concrete section 5.

[0049] Embodiment 2:

[0050] like Figure 3 and Figure 4 The connection node of the assembled wall panel structure of the second embodiment is shown, which is a vertical connection node of an L-shaped wall. Among the two prefabricated wall panels 1 connected to each other, one prefabricated wall panel 1 is L-shaped and the other is straight-line shaped.

[0051] The two prefabricated wall panels 1 are provided with prefabricated outer formwork 6 at the joint, which is formed together with the prefabricated wall panels 1 and used as the post-cast concrete section formwork. The joint between the two prefabricated outer formworks 1 is filled with waterproof paste 10. The inner side of the prefabricated outer formwork 6 is the post-cast concrete section 5, and a plurality of truss steel bars 7 arranged in sequence up and down are anchored on the prefabricated outer formwork 6, and part of the truss steel bars 7 is buried in the post-cast concrete section 5.

[0052] Parts of the horizontal reinforcement bars 3 on the inner wall side of the two prefabricated wall panels 1 extend into the post-cast concrete section 5 and form hooks 12. Parts of the horizontal reinforcement bars 4 on the outer wall side of the two prefabricated wall panels 1 extend into the prefabricated outer formwork 6.

[0053] Additional longitudinal reinforcement 9 and additional hoop 8 are also provided in the post-cast concrete section 5. The additional longitudinal reinforcement 9 is passed through the inner sides of the four corners of the additional hoop 8. The additional longitudinal reinforcement 9 and the additional hoop 8 are tied together. The lower end of the additional longitudinal reinforcement 9 is single-sidedly welded to the longitudinal reinforcement of the lower wall.

[0054] Embodiment three:

[0055] like Figure 5 and Figure 6 The connection node of the assembled wall panel structure of the third embodiment is shown, which is a vertical connection node of an L-shaped wall. The two prefabricated wall panels 1 are both in a straight line shape and are vertically butted against each other.

[0056] The two prefabricated wall panels 1 are provided with a prefabricated outer formwork 6 at the joint, and the prefabricated outer formwork 6 is formed together with the prefabricated wall panels 1 and used as a post-cast concrete section formwork. The joint between the two prefabricated outer formworks 6 is filled with waterproof paste 10. The inner side of the prefabricated outer formwork 6 is the post-cast concrete section 5, and the post-cast concrete section 5 of this embodiment is L-shaped. A plurality of truss steel bars 7 arranged in sequence up and down are anchored on the prefabricated outer formwork 6, and parts of the truss steel bars 7 are buried in the post-cast concrete section 5. Parts of the horizontal steel bars 3 on the inner side of the wall of the two prefabricated wall panels 1 are extended into the post-cast concrete section 5, and a hook 12 is formed. Parts of the horizontal steel bars 4 on the outer side of the wall of the two prefabricated wall panels 1 are extended into the prefabricated outer formwork 6.

[0057] In this embodiment, two groups of additional hoops 8 and additional longitudinal bars 9 are provided in the post-cast concrete section 5. The two groups of additional hoops 8 are respectively located at two sides of the L-shaped post-cast concrete section 5, and parts of the two groups of additional hoops 8 intersect. The additional longitudinal bars 9 are passed through the inner sides of the four corners of the additional hoops 8, the additional longitudinal bars 9 and the additional hoops 8 are tied together, and the lower ends of the additional longitudinal bars 9 are single-sidedly welded to the wall longitudinal bars of the lower layer.

[0058] Embodiment 4:

[0059] like Figure 7 and Figure 8The connection node of the assembled wall panel structure of the fourth embodiment is shown, which is a vertical connection node of a straight-line wall. Both of its two prefabricated wall panels 1 are straight-lined and butt-jointed.

[0060] The two prefabricated wall panels 1 are provided with prefabricated outer templates 6 at the joints, and the prefabricated outer templates 6 are formed together with the prefabricated wall panels 1 and used as the templates for the post-cast concrete sections. The joints between the two prefabricated outer templates 1 are filled with waterproof paste 10.

[0061] The inner side of the prefabricated outer formwork 6 is a post-cast concrete section 5, and a plurality of truss steel bars 7 arranged in sequence from top to bottom are anchored on the prefabricated outer formwork 6, and parts of the truss steel bars 7 are embedded in the post-cast concrete section 5. Parts of the horizontal steel bars 3 on the inner side of the two prefabricated wall panels 1 extend into the post-cast concrete section 5, and are formed with hooks 12. Parts of the horizontal steel bars 4 on the outer side of the two prefabricated wall panels 1 extend into the prefabricated outer formwork 6.

[0062] Additional longitudinal reinforcement 9 and additional hoop 8 are also provided in the post-cast concrete section 5. The additional longitudinal reinforcement 9 is passed through the inner sides of the four corners of the additional hoop 8. The additional longitudinal reinforcement 9 and the additional hoop 8 are tied together. The lower end of the additional longitudinal reinforcement 9 is single-sidedly welded to the longitudinal reinforcement of the lower wall.

[0063] The above-mentioned embodiments of the utility model are not intended to limit the protection scope of the utility model, and the implementation methods of the utility model are not limited to these. All other various forms of modifications, replacements or changes made to the above-mentioned structure of the utility model based on the above-mentioned contents of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above-mentioned basic technical ideas of the utility model, should fall within the protection scope of the utility model.

Claims

1. A connection node of an assembled wall panel structure, comprising two prefabricated wall panels connected to each other, wherein longitudinal steel bars and horizontal steel bars are arranged in the prefabricated wall panels, and characterized in that: One of the prefabricated wall panels or two of the prefabricated wall panels is provided at the joint with a prefabricated outer formwork for on-site pouring of a post-cast concrete section, the prefabricated outer formwork is located on the side of the prefabricated wall panel facing the outdoors, the inner side of the prefabricated outer formwork is a post-cast concrete section formed by pouring concrete on-site, truss steel bars arranged in sequence up and down are anchored on the prefabricated outer formwork, part of the truss steel bars are buried in the post-cast concrete section, part of the horizontal steel bars pass through the prefabricated wall panel and are buried in the post-cast concrete section, additional longitudinal bars and additional hoops are also provided in the post-cast concrete section, the lower ends of the additional longitudinal bars are single-sidedly welded to the lower layer of the wall longitudinal bars, and the additional longitudinal bars and additional hoops are bound together.

2. The connection node of the assembled wall panel structure according to claim 1, characterized in that: The end of the horizontal steel bar embedded in the post-cast concrete section is provided with a vertically bent hook.

3. The connection node of the assembled wall panel structure according to claim 1, characterized in that: The horizontal steel bars include horizontal steel bars on the outside of the wall and horizontal steel bars on the inside of the wall. The horizontal steel bars on the outside of the wall and the horizontal steel bars on the inside of the wall are respectively close to the outer side and inner side of the prefabricated wall panel, and part of the horizontal steel bars on the outside of the wall extends into the prefabricated outer formwork.

4. The connection node of the assembled wall panel structure according to claim 1, characterized in that: The joints of the two prefabricated wall panels that are connected to each other are filled with waterproof grease.

5. The connection node of the assembled wall panel structure according to claim 1, characterized in that: It also includes a reinforcing hoop, a part of which is embedded in the prefabricated wall panel, and the other part of which is embedded in the post-cast concrete section.

6. The connection node of the assembled wall panel structure according to claim 1, characterized in that: The additional longitudinal ribs are arranged on the inner sides of the four corners of the additional hoop.

7. The connection node of the assembled wall panel structure according to claim 1, characterized in that: The truss steel bar is in a V shape, with its end embedded in the prefabricated outer formwork and the remaining part embedded in the post-cast concrete section.

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