A frame structure combined with prestressed hollow wall panels

Abstract

The utility model belongs to the field of fabricated building, concretely relates to a frame structure combined with prestressed hollow wallboard, aims at solving the problem of unsafe use of EHC wallboard as hanging enclosure. The utility model includes: bearing frame, including frame column, ground beam and upper layer beam, support system, fixed on ground beam, including bearing steel sheet and the U type channel steel that is laid on the top of bearing steel sheet, prestressed hollow wallboard, vertical arrangement, its bottom is located in U type channel steel, connecting system, including C type embedded part that is embedded on the upper and lower edges of prestressed hollow wallboard, the upper node connecting angle steel that is arranged in upper layer beam, the lower node connecting steel sheet that is arranged in support system, and the connecting assembly that fixes C type embedded part with upper node connecting angle steel and lower node connecting steel sheet respectively. The utility model bears through support system and three -dimensional adjustable node limiting, solves the hidden danger of EHC wallboard hanging safety, and the vertical through -length arrangement improves construction efficiency, ensures safe and reliable.

Description

Technical Field

[0001] This utility model belongs to the field of prefabricated buildings, specifically relating to a frame structure combined with prestressed hollow wall panels. Background Technology

[0002] Prestressed products are increasingly favored due to their advantages such as light weight, large span, and material savings. Prestressed hollow core wall panels, as one type, are also receiving attention. Compared to the widespread application of prestressed hollow core floor slabs, prestressed hollow core wall panels are currently less used, especially for EHC (extruded hollow core slabs) type. Due to equipment limitations, embedded parts cannot be placed in the wall panels before or during production; they can only be placed after the wall panels are produced. This results in the embedded parts not being able to connect with the prestressed steel strands, thus compromising the safety performance of EHC prestressed hollow core wall panels when used as suspended enclosure structures.

[0003] Based on this, this utility model proposes a frame structure combined with prestressed hollow wall panels. Utility Model Content

[0004] To address the aforementioned problems in the prior art, namely the safety concerns associated with its use as a suspended enclosure, this utility model provides a frame structure combined with prestressed hollow wall panels, comprising:

[0005] The load-bearing frame includes frame columns, ground beams, and upper beams;

[0006] The support system, fixed to the ground beam, includes a load-bearing steel plate and a U-shaped channel steel laid on top of the load-bearing steel plate;

[0007] The prestressed hollow wall panel is arranged vertically, and its bottom rests inside the U-shaped channel steel.

[0008] The connection system includes C-shaped embedded parts pre-embedded on the upper and lower edges of the prestressed hollow wall panel, upper node connecting angle steel provided on the upper beam, lower node connecting steel plate provided on the support system, and connecting components that fix the C-shaped embedded parts to the upper node connecting angle steel and the lower node connecting steel plate respectively.

[0009] The self-weight of the prestressed hollow wall panel is transferred to the ground beam through the U-shaped channel steel and the load-bearing steel plate.

[0010] Furthermore, the support system also includes stiffening ribs spaced apart below the load-bearing steel plate.

[0011] Furthermore, the upper node connecting angle steel has a first rectangular hole, and the lower node connecting steel plate has a second rectangular hole; the connecting component is a special bolt that passes through the first rectangular hole or the second rectangular hole.

[0012] Furthermore, the first rectangular hole is an elongated hole, allowing the special bolt to move horizontally within it.

[0013] Furthermore, the prestressed hollow wall panel has a tongue and groove joint on its side for splicing.

[0014] Furthermore, the U-shaped channel steel is of the same thickness as the prestressed hollow wall panel, and a deformation gap is reserved between the U-shaped channel steel and the frame column.

[0015] Furthermore, a double layer of prestressed steel strands is arranged along the length of the prestressed hollow wall panel, and the prestressed steel strands are embedded in the ribs between the holes of the wall panel.

[0016] Furthermore, a rubber pad is laid inside the U-shaped channel steel, and the bottom of the prestressed hollow wall panel rests on the rubber pad.

[0017] Furthermore, the C-shaped embedded part is equipped with anchors and is fixed inside the prestressed hollow wall panel by grouting.

[0018] Furthermore, a gap is reserved between two adjacent prestressed hollow wall panels.

[0019] The beneficial effects of this utility model are:

[0020] The prestressed hollow wall panels in this invention are arranged vertically, with their height extending from the support system to above the designed structural height, reducing the number of wall panels and improving construction efficiency. A ground beam is set at the bottom of the frame structure, and the support system is set on the ground beam. The bottom of the prestressed concrete hollow wall panels rests on the support system, and the two are connected by a connection node system. The self-weight of the prestressed hollow wall panels is ultimately transferred to the ground through the support system. The node system has three-dimensional adjustable capabilities, serving as a limit and tie, but not a load-bearing function. This effectively solves the safety problem of EHC type prestressed hollow wall panels when used as suspended enclosure structures, and has a promising application prospect. Attached Figure Description

[0021] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0022] Figure 1 This is a front view of a frame structure combined with a prestressed hollow wall panel according to this utility model;

[0023] Figure 2 This is a rear view of a frame structure combined with a prestressed hollow wall panel according to this utility model;

[0024] Figure 3 This is a schematic diagram of a support system for a frame structure combined with a prestressed hollow wall panel according to this utility model;

[0025] Figure 4 This is a schematic diagram of the upper node and wall panel structure of a frame structure combined with a prestressed hollow wall panel according to this utility model.

[0026] Figure 5 This is a schematic diagram of the lower node of a frame structure combined with a prestressed hollow wall panel according to this utility model;

[0027] Figure 6 This is a schematic diagram of the upper node connection of a frame structure combined with a prestressed hollow wall panel according to this utility model;

[0028] In the diagram, 1-frame column; 2-ground beam; 3-upper beam; 41-stiffening rib steel plate; 42-load-bearing steel plate; 43-U-shaped channel steel; 5-rubber pad; 6-prestressed hollow wall panel; 61-prestressed steel strand; 62-hole; 63-rib; 64-mother-daughter groove; 7-upper node connecting angle steel; 71-first rectangular hole; 8-C-shaped embedded part; 81-special bolt; 82-anchor nail; 9-lower node connecting steel plate; 91-second rectangular hole. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] The first embodiment of this utility model proposes a frame structure combined with a prestressed hollow wall panel, comprising: a load-bearing frame including frame columns 1, a ground beam 2, and an upper beam 3; a support system fixed to the ground beam 2, including a load-bearing steel plate 42 and a U-shaped channel steel 43 laid on top of the load-bearing steel plate 42; a prestressed hollow wall panel 6, arranged vertically, with its bottom resting in the U-shaped channel steel 43; and a connection system including C-shaped embedded parts 8 pre-embedded on the upper and lower edges of the prestressed hollow wall panel 6, an upper node connecting angle steel 7 provided on the upper beam 3, a lower node connecting steel plate 9 provided on the support system, and a connecting assembly that fixes the C-shaped embedded parts 8 to the upper node connecting angle steel 7 and the lower node connecting steel plate 9 respectively; wherein, the self-weight of the prestressed hollow wall panel 6 is transferred to the ground beam 2 through the U-shaped channel steel 43 and the load-bearing steel plate 42.

[0032] Specifically, such as Figure 1 and Figure 2 As shown, this frame structure system is organically composed of four core parts. The load-bearing frame forms the skeleton of the system, including the vertically load-bearing frame columns 1, the ground beams 2 set at the top of the foundation, and the upper beams 3 located at the top of the frame columns. The support system is fixedly installed on the top of the ground beams 2, and its core function is to support the weight of the wall panels. It consists of load-bearing steel plates 42 laid directly on the ground beams 2 and U-shaped channel steel 43 fixed to the top of the load-bearing steel plates 42. The prestressed hollow wall panels 6 are arranged vertically, and their bottoms rest directly in the grooves of the U-shaped channel steel 43. The connection system is responsible for connecting the wall panels to the main structure. It includes C-shaped embedded parts 8 pre-embedded in the upper and lower edges of the wall panels, upper node connecting angle steel 7 installed on the lower surface of the upper beams 3 for connecting the upper embedded parts of the wall, lower node connecting steel plates 9 installed on the support system for connecting the lower embedded parts of the wall, and detachable connecting components such as special bolts 81 to achieve the above connections. In this system, the entire vertical self-weight load of the prestressed hollow wall panel 6 is borne by the U-shaped channel steel 43 at its bottom and immediately transferred to the load-bearing steel plate 42 below it, and finally safely transferred to the ground beam 2 and the foundation. This achieves a scientific force transmission path in which the self-weight of the wall panel is independently borne by the bottom support system and the upper connection system only bears the horizontal force.

[0033] As a further explanation of the present invention, the support system also includes stiffening rib steel plates 41 spaced apart below the load-bearing steel plate 42.

[0034] like Figure 3 and Figure 5As shown, to ensure that the load-bearing steel plate 42 has sufficient rigidity and stability when bearing the huge vertical load transmitted by the wall panel and to prevent it from bending and deforming, several stiffening ribs 41 are arranged at intervals along the length of the ground beam 2 below the load-bearing steel plate 42. These stiffening ribs 41 are vertically welded and fixed to the top surface of the ground beam 2 and reliably connected to the load-bearing steel plate 42 above. They function like vertically arranged ribs, greatly enhancing the vertical bearing capacity and overall stability of the support system and ensuring that the load can be effectively transmitted downwards.

[0035] As a further explanation of this utility model, the upper node connecting angle steel 7 is provided with a first rectangular hole 71, and the lower node connecting steel plate 9 is provided with a second rectangular hole 91; the connecting component is a special bolt 81 that passes through the first rectangular hole 71 or the second rectangular hole 91.

[0036] like Figure 4 and Figure 6 As shown, to achieve adjustability of the connection nodes, a first rectangular hole 71 is provided on the horizontal leg of the upper node connecting angle steel 7, while a second rectangular hole 91 is provided on the lower node connecting steel plate 9. The connection component is specifically a special bolt 81, which passes sequentially through the first rectangular hole 71 of the upper node connecting angle steel 7 or the second rectangular hole 91 of the lower node connecting steel plate 9, and finally screws into the threaded hole of the C-shaped embedded part 8 pre-embedded in the wall panel, thereby firmly connecting the wall panel to the main structure. This combination of holes and bolts provides a basis for fine-tuning the position during installation.

[0037] As a further explanation of this utility model, the first rectangular hole 71 is an elongated hole, which allows the special bolt 81 to move horizontally within it.

[0038] like Figure 4 and Figure 6 As shown, the first rectangular hole 71 on the upper node connecting angle steel 7 is specially designed to be elongated. This design allows the special bolt 81 to move horizontally within the length of the elongated hole before it is fully tightened. This feature allows the horizontal position of the wall panel to be adjusted within a certain range according to the actual site conditions during installation, effectively absorbing construction errors and adapting to structural deformation. This is one of the key features for realizing the three-dimensional adjustable function of the node.

[0039] As a further explanation of this utility model, the prestressed hollow wall panel 6 is provided with a tongue and groove 64 for splicing on the side.

[0040] like Figure 4As shown, the two sides of the prestressed hollow wall panel 6 are respectively machined with a raised male groove and a recessed female groove, which together form a male-female groove splicing structure 64. When two adjacent wall panels are assembled, the male groove of one panel will naturally embed into the female groove of the other panel. This structure not only realizes the rapid positioning of the wall panels and ensures the neatness of the joints, but also effectively improves the airtightness and integrity of the wall panel joints.

[0041] As a further explanation of this utility model, the U-shaped channel steel 43 has the same thickness as the prestressed hollow wall panel 6, and a deformation gap is reserved between the U-shaped channel steel 43 and the frame column 1.

[0042] like Figure 5 As shown, the width of the U-shaped channel steel 43 is precisely designed to be equal to the thickness of the prestressed hollow wall panel 6. This allows the wall panel to be seamlessly embedded into the channel steel, ensuring uniform stress distribution and a smooth appearance. Simultaneously, a deformation gap of approximately 10 mm is reserved between the end of the U-shaped channel steel 43 and the adjacent frame column 1. This gap provides necessary buffer space for potential horizontal deformation of the structure under temperature changes, wind loads, etc., avoiding adverse additional stress on the support system or the wall panel itself due to restricted deformation.

[0043] As a further explanation of this utility model, a double layer of prestressed steel strands 61 are arranged along the length of the prestressed hollow wall panel 6, and the prestressed steel strands 61 are embedded in the ribs 63 between the holes 62 of the wall panel.

[0044] like Figure 4 As shown, the prestressed hollow wall panel 6 has a double layer of high-strength prestressed steel strands 61 arranged along its length. These steel strands are precisely embedded in the concrete ribs 63 between adjacent circular holes 62 in the wall panel cross-section, and are located at the upper and lower parts of the wall panel thickness direction, respectively. This continuous double-layer reinforcement structure can apply effective prestress to the wall panel, significantly improving the bending stiffness, crack resistance, and integrity of the wall panel, enabling it to meet the stress requirements of a multi-story continuous arrangement.

[0045] As a further explanation of this utility model, a layer of rubber pad 5 is laid inside the U-shaped channel steel 43, and the bottom of the prestressed hollow wall panel 6 rests on the rubber pad 5.

[0046] like Figure 5As shown, before installing the prestressed hollow wall panel 6, a long strip of rubber pad 5 of the same width as the channel steel 43 needs to be laid at the bottom of the channel steel 43. When the bottom of the wall panel rests on the rubber pad 5, the rubber pad can play multiple positive roles: first, buffering and absorbing the vibration and noise transmitted by the wall panel; second, making the load of the wall panel more evenly distributed on the U-shaped channel steel 43; third, compensating for the micro-unevenness of the contact surface and ensuring stress stability; and fourth, playing a certain role in sealing and sound insulation.

[0047] As a further explanation of this utility model, the C-shaped embedded part 8 is equipped with anchor nails 82 and is fixed in the prestressed hollow wall panel 6 by grouting.

[0048] like Figure 6 As shown, the C-shaped embedded part 8 is a post-installed embedded part, with multiple anchors 82 welded to its back. After the wall panel is produced, cured, and cut to the design dimensions, the C-shaped embedded part 8 is embedded into the groove by positioning and slotting on its surface, and then fixed by grouting with high-strength grout. After the grout hardens, it forms a strong mechanical interlocking force with the anchors 82, and simultaneously bonds with the wall panel concrete, thereby firmly anchoring the C-shaped embedded part 8 within the prestressed hollow wall panel 6. This post-installed fixing method perfectly solves the technological problem of not being able to pre-embed embedded parts during the production process of EHC wall panels.

[0049] As a further explanation of this utility model, a gap is reserved between two adjacent prestressed hollow wall panels 6.

[0050] like Figure 1 As shown, during installation, the two adjacent prestressed hollow wall panels 6 are not tightly joined together, but rather a certain gap is left, which is usually designed to be 15 mm. This gap has several important functions: it provides deformation space for the wall panels to expand and contract due to thermal changes such as temperature and humidity, preventing cracking of the wall panels due to compressive stress caused by restricted deformation; at the same time, this gap also provides the necessary operating space for subsequent joint sealing treatment, such as applying sealant.

[0051] The second embodiment of this utility model, based on the content described in the first embodiment, proposes a method for applying prestressed hollow wall panels in a frame structure. The core of this method lies in ensuring that the weight of the prestressed hollow wall panel is borne by the support system of the frame structure. The embedded parts at the connection nodes between the prestressed hollow wall panel and the frame structure are installed later. The node system serves to tie and buffer deformation. The prestressed hollow wall panels are arranged vertically across the entire length of each floor.

[0052] The method specifically includes the following steps:

[0053] Step S1: Design the drawings. The frame bays are modularly designed based on the standard width of the prestressed hollow wall panels 6, which is typically 1.2 meters, to avoid non-standard width wall panels. The design thickness of the prestressed hollow wall panels 6 does not exceed the height-to-thickness ratio limit specified in the code. The gap between wall panels is designed to be 15 mm, and the gap between the wall panels and the main structure is reserved according to the requirements of the current seismic design code for buildings.

[0054] Step S2 involves fabricating the prestressed hollow wall panels. Highly automated specialized shearing and extrusion equipment is used to fabricate the prestressed hollow wall panels 6. The prestressed steel strands 61 are tensioned integrally to ensure quality. The panels are precisely cut according to the designed wall panel height, with the cutting length error controlled within ±5 mm. The fabricated wall panels have a tongue-and-groove splicing structure 64 on the sides. Double-layer prestressed steel strands 61 are arranged along the entire length of the panel, and the steel strands are embedded in the ribs 63 between the holes 62.

[0055] Step S3: Install the C-shaped wall panel embedded parts 8. Place the wall panel horizontally with the side where the embedded parts will be installed facing upwards. Position and mark the location according to the design, cut grooves, and plug holes. Then, place the C-shaped strip-shaped embedded part 8, with anchor nails 82 on its back, into the groove, and finally fix it with grout. The embedded parts are installed at the top and bottom of the hollow wall panel 6.

[0056] Step S4: Install the frame structure and support system. The frame structure is a low-rise structure with a ground beam 2 at its base. A support system is installed on the outer surface of the ground beam 2. The support system consists of stiffening ribs 41, load-bearing steel plates 42, and U-shaped channel steel 43. The stiffening ribs 41 and load-bearing steel plates 42 are arranged alternately. The stiffening ribs 41 are positioned below the load-bearing steel plates 42 for support, while the U-shaped channel steel 43 rests on the load-bearing steel plates 42. The width of the U-shaped channel steel 43 is the same as the thickness of the hollow wall panel 6, and a reasonable gap of approximately 10 mm is maintained between the channel steel and the frame column 1. Before placing the wall panel, a long strip of rubber pad 5, the same width as the channel steel, needs to be laid on the U-shaped channel steel 43.

[0057] Step S5: Install the connectors. The connectors used to connect to the C-shaped embedded parts 8 of the prestressed hollow wall panel 6 are installed on the structural beams and the support system, respectively. Specifically, an upper node connecting angle steel 7 with a long rectangular opening 71 is installed on the upper beam 3, and a lower node connecting steel plate 9 with a second rectangular opening 91 is installed on the support system.

[0058] Step S6: Install the prestressed hollow wall panels 6. Hoist the wall panels into position sequentially according to the design layout. The wall panels are arranged vertically across multiple floors, with their bottoms resting on rubber pads 5 within the U-shaped channel steel 43 of the support system. The upper and lower C-shaped embedded parts 8 of the wall panels are connected to the installed connectors (upper node connecting angle steel 7 and lower node connecting steel plate 9) via special bolts 81. Vertical adjustment is achieved by adjusting the tightening position of the special bolts 81 within the grooves of the C-shaped embedded parts 8, and horizontal adjustment is achieved by the displacement of the bolts within the elongated first rectangular hole 71 of the connecting angle steel 7. These two adjustments work together to achieve a three-dimensional adjustable function, thus completing the entire installation process.

[0059] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working process and related descriptions of the system described above can be found in the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0060] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0061] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0063] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A frame structure combined with prestressed hollow wall panels, characterized in that, include: The load-bearing frame includes frame columns (1), ground beams (2), and upper beams (3); The support system, fixed to the ground beam (2), includes a load-bearing steel plate (42) and a U-shaped channel steel (43) laid on top of the load-bearing steel plate (42); The prestressed hollow wall panel (6) is arranged vertically, and its bottom rests inside the U-shaped channel steel (43); The connection system includes C-shaped embedded parts (8) pre-embedded on the upper and lower edges of the prestressed hollow wall panel (6), upper node connecting angle steel (7) provided on the upper beam (3), lower node connecting steel plate (9) provided on the support system, and connecting components that fix the C-shaped embedded parts (8) to the upper node connecting angle steel (7) and the lower node connecting steel plate (9) respectively. The self-weight of the prestressed hollow wall panel (6) is transferred to the ground beam (2) through the U-shaped channel steel (43) and the load-bearing steel plate (42).

2. The frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, The support system also includes stiffening ribs (41) spaced below the load-bearing steel plate (42).

3. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, The upper node connecting angle steel (7) has a first rectangular hole (71), and the lower node connecting steel plate (9) has a second rectangular hole (91); the connecting component is a special bolt (81) that passes through the first rectangular hole (71) or the second rectangular hole (91).

4. A frame structure combined with prestressed hollow wall panels according to claim 3, characterized in that, The first rectangular hole (71) is an elongated hole, which allows the special bolt (81) to move horizontally within it.

5. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, The prestressed hollow wall panel (6) has a tongue and groove (64) for splicing on its side.

6. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, The U-shaped channel steel (43) has the same thickness as the prestressed hollow wall panel (6), and a deformation gap is reserved between the U-shaped channel steel (43) and the frame column (1).

7. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, The prestressed hollow wall panel (6) has a double layer of prestressed steel strands (61) arranged along its length, and the prestressed steel strands (61) are embedded in the ribs (63) between the holes (62) of the wall panel.

8. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, A layer of rubber pad (5) is laid inside the U-shaped channel steel (43), and the bottom of the prestressed hollow wall panel (6) sits on the rubber pad (5).

9. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, The C-shaped embedded part (8) is equipped with anchor nails (82) and is fixed in the prestressed hollow wall panel (6) by grouting.

10. A frame structure combined with prestressed hollow wall panels according to claim 1, characterized in that, A gap is reserved between two adjacent prestressed hollow wall panels (6).

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