Semi-embedded type connecting joint of ALC floor plate and H-shaped steel beam

Abstract

The utility model provides a semi-embedded type connecting joint of an ALC floor plate and an H-shaped steel beam. A cement mortar layer with a reinforcing mesh embedded is arranged at the top end of the ALC floor plate, and the bottom end of the ALC floor plate is supported by the H-shaped steel beam. The upper flange of the H-shaped steel beam is connected with the ALC floor plate through a plurality of groups of connecting pieces which are distributed at intervals along the beam length direction; according to each set of connecting pieces, the hook head ends of a pair of hook head bolts downwards penetrate through the upper flange of the H-shaped steel beam and are hooked to the lower end of the upper flange, the hook head ends of the hook head bolts are connected with the upper flange in a welded mode, and the other ends of the hook head bolts upwards penetrate through the ALC floor plate, extend into the cement mortar layer, penetrate through the reinforcing mesh, are connected with the reinforcing mesh in a welded mode and are fastened to the ALC floor plate through nuts. Every two adjacent groups of connecting pieces extend to the position between the ends of the cement mortar layer through the hook-headed bolts on the same side and are tied and fixed through S-shaped tie steel bars. The connecting structure is easy to construct, reliable connection can be formed between the ALC floor plate and the H-shaped steel beam, and powerful guarantee is provided for the overall rigidity and anti-seismic performance of the structure.

Description

Technical Field

[0001] The utility model relates to the field of steel structure buildings, and more specifically to a semi-buried connection node between an ALC floor panel and an H-shaped steel beam. Background Art

[0002] Autoclaved aerated concrete panels, also known as ALC panels, are a green, lightweight panel used extensively in various prefabricated buildings. In the construction of prefabricated, integrated low-rise buildings, ALC panels are used for both the exterior wall panels and floor slabs. Compared to traditional concrete slabs, they eliminate the complex steps of formwork and pouring. However, the existing connection method between the ALC floor panels and the main structural steel beams lacks sufficient rigidity, affecting the overall rigidity and seismic performance of the structure. Utility Model Content

[0003] In order to solve the above technical problems, the utility model proposes a semi-buried connection node between the ALC floor panel and the H-shaped steel beam, which is easy to construct and can form a reliable connection between the ALC floor panel and the H-shaped steel beam, providing a strong guarantee for the overall stiffness and seismic performance of the structure.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A semi-buried connection node between an ALC floor panel and an H-shaped steel beam has the following structural features:

[0006] A cement mortar layer is provided on the top of the ALC floor panel, and the bottom is supported by an H-shaped steel beam. A layer of steel mesh is embedded in the cement mortar layer, and a distance is left between the steel mesh and the ALC floor panel; the upper flange of the H-shaped steel beam and the ALC floor panel are connected by multiple groups of connectors spaced along the length of the beam; each group of connectors includes a pair of hook bolts, which are symmetrically distributed on the upper flange of the H-shaped steel beam with the web of the H-shaped steel beam as the boundary, the hook end passes downward through the upper flange of the H-shaped steel beam, hooked on the lower end of the upper flange, and welded together, and the other end passes upward through the ALC floor panel and extends into the cement mortar layer, passes through the steel mesh and is welded to the steel mesh, and is fastened to the ALC floor panel by a nut; the two adjacent groups of connectors are fixed by "S"-shaped tie bars between the ends of the hook bolts on the same side extending into the cement mortar layer.

[0007] The structural features of the present invention are:

[0008] The length of the hook bolt extending into the cement mortar layer is 10±2mm.

[0009] There is a 10mm height gap between the steel mesh and the ALC floor panel.

[0010] The hook bolts on opposite sides of two adjacent H-shaped steel beams are tied and fixed by "S"-shaped tie bars.

[0011] The hook bolts are welded on site to the steel mesh and to the upper flange of the H-shaped steel beam.

[0012] Compared with the existing technology, the beneficial effects of this utility model are embodied in:

[0013] When laying the ALC floor panels of the prefabricated integrated house, the utility model forms a firm connection between the hook bolts and the H-shaped steel beams, and arranges a steel mesh to be welded to the upper ends of the hook bolts. At the same time, the upper ends of adjacent hook bolts are mutually tied by "S"-shaped tie bars. Finally, cement mortar is poured so that the upper ends of the hook bolts, the steel mesh and the tie bars are cast as a whole with the cement mortar layer. This connection method ensures the integrity of the structure, improves the seismic performance of the prefabricated integrated house, and improves the current situation of insufficient connection rigidity between the floor panels of the prefabricated integrated house and the main structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the perspective structure of the utility model;

[0015] Figure 2 It is a side structural schematic diagram of the utility model.

[0016] In the figure, 1 ALC floor panel; 2 cement mortar layer; 3 steel mesh; 4 H-shaped steel beam; 5 hook bolts; 6 nuts; 7 tie steel bars. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are 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 shall fall within the scope of protection of the present invention.

[0018] Please refer to Figures 1 to 2 The semi-buried connection node structure of the ALC floor panel and the H-shaped steel beam in this embodiment is set as follows:

[0019] A cement mortar layer 2 is provided on the top of the ALC floor panel 1, and the bottom end is supported by an H-shaped steel beam 4. A layer of steel mesh 3 is buried in the cement mortar layer 2, and a distance is left between the steel mesh 3 and the ALC floor panel 1; the upper flange of the H-shaped steel beam 4 is connected to the ALC floor panel 1 by multiple groups of connectors spaced along the length of the beam; each group of connectors includes a pair of hook bolts 5, which are symmetrically distributed on the upper flange of the H-shaped steel beam 4 with the web of the H-shaped steel beam 4 as the boundary, and the hook end passes downward through the upper flange of the H-shaped steel beam 4, hooked at the lower end of the upper flange, and welded together, and the other end passes upward through the ALC floor panel 1 and extends into the cement mortar layer 2, passes through the steel mesh 3 and is welded to the steel mesh 3, and is fastened to the ALC floor panel 1 by a nut 6; the two adjacent groups of connectors are fixed by "S"-shaped tie bars 7 between the hook bolts 5 on the same side extending to the ends of the cement mortar layer 2.

[0020] The structural setting of the semi-buried connection node also includes:

[0021] The length of the hook bolt 5 extending to the cement mortar layer 2 is 10±2 mm.

[0022] There is a 10mm height gap between the steel mesh 3 and the ALC floor panel 1.

[0023] Only the hook bolts 5 on the opposite sides of two adjacent H-shaped steel beams 4 are tied and fixed by "S"-shaped tie bars 7.

[0024] The hook bolts 5 are welded on site to the steel mesh 3 and to the upper flange of the H-shaped steel beam 4 .

[0025] The following is a construction example:

[0026] The ALC floor panel 1 is 600mm wide and is cut and split on site. It is laid lengthwise on the H-shaped steel beam 4. Holes are cut in advance for the insertion of M12 hook bolts 5. The panels are squeezed tightly together to maintain natural seams.

[0027] Holes are cut in advance on the upper flange of the H-shaped steel beam 4 for the M12 hook bolts 5 to penetrate from bottom to top;

[0028] Insert the M12 hook bolt 5 with the hook end facing downward, pass through the upper flange of the H-shaped steel beam 4 and the ALC floor panel 1 from bottom to top, until the other end is extended upward to expose 110±2mm of the ALC floor panel, making sure the hook end is tightly hooked on the upper flange of the H-shaped steel beam 4;

[0029] Refer to the above steps to install each hook bolt 5 one by one;

[0030] Then install the nuts 6, tighten them initially, adjust the dimensions between the ALC floor panels, and make sure all the hook bolts 5 are in place and the panels are tightly squeezed together before final tightening.

[0031] Check the height of the exposed ends of each hook bolt 5, and use φ6mm "S"-shaped tie bars 7 to tie and secure the ends of adjacent hook bolts 5. At the same time, lay φ6mm steel mesh 3 above the ALC floor panel 1, and use reinforcement bars to ensure that the steel mesh 3 is 110mm above the ALC floor panel.

[0032] On-site welding is adopted between the hook bolt 5 and the steel mesh 3 and the H-shaped steel beam 4 to ensure that each hook bolt 5 is firmly welded to the steel mesh 3 and the H-shaped steel beam 4;

[0033] ALC floor panel 1 is integrally cast with a 30 mm thick cement mortar layer 2 and maintained until the working surface is completed.

[0034] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A semi-buried connection node between an ALC floor panel and an H-shaped steel beam, characterized by: A cement mortar layer is arranged on the top of the ALC floor panel, and the bottom is supported by an H-shaped steel beam. A layer of steel mesh is buried in the cement mortar layer, and a distance is left between the steel mesh and the ALC floor panel. The upper flange of the H-shaped steel beam is connected to the ALC floor panel through multiple groups of connectors spaced along the length of the beam. Each group of connectors includes a pair of hook bolts, which are symmetrically distributed on the upper flange of the H-shaped steel beam with the web of the H-shaped steel beam as the boundary. The hook end passes through the upper flange of the H-shaped steel beam downward, hooks on the lower end of the upper flange, and is welded to each other. The other end passes through the ALC floor panel upward and extends into the cement mortar layer, passes through the steel mesh and is welded to the steel mesh, and is fastened to the ALC floor panel through nuts. Two adjacent groups of connectors are fixed by "S"-shaped tie bars between the ends of the hook bolts extending to the cement mortar layer on the same side.

2. The semi-buried connection node between the ALC floor panel and the H-shaped steel beam according to claim 1 is characterized in that: The length of the hook bolt extending to the cement mortar layer is 10±2mm.

3. The semi-buried connection node between the ALC floor panel and the H-shaped steel beam according to claim 1 is characterized in that: There is a 10mm height gap between the steel mesh and the ALC floor slab.

4. The semi-buried connection node between the ALC floor panel and the H-shaped steel beam according to claim 1 is characterized in that: The hook bolts on opposite sides of two adjacent H-shaped steel beams are tied and fixed by "S"-shaped tie bars.

5. The semi-buried connection node between the ALC floor panel and the H-shaped steel beam according to claim 1 is characterized in that: The hook bolts are welded on site to the steel mesh and to the upper flange of the H-shaped steel beam.

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