A prefabricated assembly type bay window top plate and H steel beam connecting method

Abstract

The application discloses a prefabricated bay window top plate and H-shaped steel beam connecting method, relates to the field of building steel structure installation, and the concave cavity of the outdoor side of the steel beam is a pouring groove, and the concave cavity of the indoor side is a filling groove, and comprises the following steps: S1, prefabricating a bay window upper plate according to construction drawings, and the end of the prefabricated bay window upper plate is provided with a connecting piece; the prefabricated bay window top plate and H-shaped steel beam connecting method are simple in connection, easy to construct, reasonable in force transmission path, simple in factory production, convenient in on-site installation, low in installation danger coefficient, low in requirement for the professional quality of construction workers, beneficial to the organization of workers, easy to realize standardization, industrialization and integration, capable of avoiding on-site wet operation, protecting the environment, saving construction period, and flat in the surface of the prefabricated bay window plate, good in visual effect, and guaranteed in quality, and especially suitable for the bay window top plates matched with the steel structure standardized residential system.

Description

Technical Field

[0001] This invention belongs to the field of building steel structure installation, specifically relating to a method for connecting a prefabricated assembled bay window roof panel to an H-beam. Background Technology

[0002] Traditional residential and public buildings in my country are mainly reinforced concrete structures. However, with the development of prefabricated building technology, steel structure buildings have been vigorously promoted. The advantages of steel structure buildings are good seismic performance, high material strength, short construction period, less wet work on the construction site, reduced environmental pollution, and compliance with the requirements of green building.

[0003] Traditionally, concrete bay window roof slabs are constructed by anchoring steel reinforcement bars into the concrete side beams, setting up formwork on-site, and pouring concrete. This involves a lot of coordination and overlapping work among various trades, as well as wet operations.

[0004] However, this type of bay window roof is not suitable for steel structure buildings for the following reasons: The traditional method of connecting bay window roofs in steel structures involves welding the steel reinforcement of the bay window roof to the steel beams on site. This method is complicated to construct and has a high risk factor. Furthermore, welding can cause some damage to the steel beam base material. The welding quality between the steel reinforcement and the steel beam is difficult to guarantee, making on-site quality supervision troublesome and posing safety hazards in later use.

[0005] Traditional steel structure bay window roof slabs require wet work on-site, which is not conducive to meeting construction schedule requirements.

[0006] Therefore, there is an urgent need to design a method for connecting the prefabricated bay window roof panel and H-beam to a steel structure building, in order to meet the requirements of structural safety and convenient installation. Summary of the Invention

[0007] The traditional method of connecting the roof slab of a bay window in a steel structure involves welding the reinforcing bars of the roof slab to the steel beam on site. This method is complicated and has a high risk factor, and the welding can damage the steel beam. Furthermore, the welding quality between the reinforcing bars and the steel beam is difficult to guarantee, making on-site quality supervision troublesome and posing safety hazards in later use. This invention provides a method for connecting a prefabricated assembled bay window roof slab to an H-beam.

[0008] The solution adopted by the present invention to solve its technical problem is: a method for connecting a prefabricated assembled bay window top plate to an H-beam, wherein the cavity on the outdoor side of the steel beam is a casting groove and the cavity on the indoor side is a filling groove.

[0009] Includes the following steps:

[0010] S1. Prefabricate the upper slab of the bay window according to the construction drawings. Connectors are provided at the ends of the prefabricated upper slab of the bay window.

[0011] S2. Locate the position of the prefabricated bay window upper plate according to the detailed steel structure drawing, and drill round holes at the corresponding positions on the steel beam. The diameter of the round holes should be 1-4mm larger than the diameter of the connectors.

[0012] S3. After the main steel structure is installed and the strength of the lower panel of the bay window reaches 75% of the design strength, use the lower panel of the bay window as a temporary support fixing point to fix the temporary support frame, hoist the prefabricated upper panel of the bay window to the designated position, and connect and fix the connector through the round hole to the steel beam. At the same time, the support frame supports the bottom of the prefabricated upper panel of the bay window.

[0013] S4. After the precast bay window upper slab is installed, pour concrete into the pouring groove. After the concrete solidifies and reaches 75% of the design strength, remove the temporary support frame.

[0014] S5. After the temporary support frame is removed, aerated concrete blocks are filled into the filling groove, and then wire mesh is attached. A fireproof coating for steel structures is sprayed on the outside of the wire mesh to form a fireproof layer.

[0015] S6. Apply the building insulation layer and plaster layer layer by layer to the outer surface of the prefabricated bay window upper slab.

[0016] As a preferred embodiment of the present invention, it further includes measures for the lathe mold used to produce the prefabricated bay window upper panel to generate a concave-convex surface of the panel.

[0017] As a preferred embodiment of the present invention, a steel mesh is provided inside the prefabricated bay window upper slab.

[0018] As a preferred embodiment of the present invention, the steel mesh is composed of N transverse reinforcing bars and M longitudinal reinforcing bars intersecting each other, with the ends of the transverse reinforcing bars protruding from the top slab of the precast bay window, and the longitudinal reinforcing bars being tied together with the transverse reinforcing bars at their connection points.

[0019] As a preferred embodiment of the present invention, the connector is an external thread provided on the protruding end of the transverse reinforcing bar. After the protruding end of the transverse reinforcing bar passes through the round hole, steel washers and fixing nuts are installed one by one.

[0020] As a preferred embodiment of the present invention, the diameter of the circular hole is 2 mm larger than the diameter of the transverse reinforcing bar.

[0021] As a preferred embodiment of the present invention, the concrete poured in the casting tank is C30 micro-expansion fine aggregate concrete.

[0022] As a preferred embodiment of the present invention, the number of fixing nuts is at least two.

[0023] As a preferred embodiment of the present invention, the steel beam is an H-shaped steel beam.

[0024] As a preferred technical solution of the present invention, a plurality of partition rib plates are fixedly installed in the pouring groove and the filling groove respectively.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The connection method of the prefabricated and assembled bay window top plate and the H-shaped steel beam is simple, easy to construct, with a reasonable force transmission path, simple factory production, convenient on-site installation, low installation risk coefficient, low requirement for the professional quality of construction workers, conducive to organizing workers, easy to achieve standardization, industrialization and integration, avoiding on-site wet operations, protecting the environment, saving the construction period, and the surface of the prefabricated bay window plate is flat, with good appearance and guaranteed quality, especially suitable for the bay window top plate supporting the standardized steel structure residential system.

[0027] 2. The connection method of the prefabricated and assembled bay window top plate and the H-shaped steel beam is simple in construction, with a low risk coefficient, without welding operation, avoiding damage to the base metal of the steel beam and ensuring the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the connection between the prefabricated bay window upper plate and the steel beam of the present invention;

[0029] Figure 2 It is a schematic top view sectional structure diagram of the prefabricated bay window upper plate of the present invention;

[0030] Figure 3 It is a schematic front view sectional structure diagram of the prefabricated bay window upper plate of the present invention;

[0031] Figure 4 It is a schematic side view structure diagram of the steel beam of the present invention;

[0032] Figure 5 It is a schematic front view sectional structure diagram of the steel beam of the present invention;

[0033] Figure 6 It is a schematic side view structure diagram of the steel gasket of the present invention.

[0034] In the figure: 1 prefabricated bay window upper plate, 2 steel beam, 3 partition stiffening plate, 4 steel gasket, 5 fixing nut, 6 C30 slightly expanded fine aggregate concrete, 7 transverse stressed steel bar, 8 concave-convex surface, 9 longitudinal steel bar, 10 round hole, 11 thermal insulation layer, 12 plaster layer, 13 fireproof layer, 14 steel wire mesh, 15 aerated block, 16 bay window lower plate, 17 support frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present invention will be further described below with reference to the drawings and embodiments.

[0036] Please refer to Figure 1-6 , the present invention provides a technical solution for a connection method of a prefabricated and assembled bay window top plate and an H-shaped steel beam:

[0037] Example 1:

[0038] according to Figure 1-6 As shown, the cavity on the outdoor side of steel beam 2 is a casting groove, and the cavity on the indoor side is a filling groove.

[0039] The connection method specifically includes the following steps:

[0040] S1. Precast the upper slab 1 of the bay window according to the construction drawings. The upper slab 1 contains N transverse reinforcing bars 7 and M longitudinal reinforcing bars 9. These bars intersect to form a reinforcing mesh. The ends of the transverse reinforcing bars 7 protrude from the upper slab 1, and the longitudinal reinforcing bars 9 are tied together with the transverse reinforcing bars 7 at their connection points. Connectors are provided at the ends of the upper slab 1; these connectors are external threads on the protruding ends of the transverse reinforcing bars 7.

[0041] S2. Locate the position of the prefabricated bay window upper plate 1 according to the detailed steel structure drawing, and drill a round hole 10 at the corresponding position of the steel beam 2. The diameter of the round hole 10 is 1-4mm larger than the diameter of the transverse reinforcing bar 7. In this embodiment, the diameter of the round hole 10 is 2mm larger than the diameter of the transverse reinforcing bar 7.

[0042] S3. After the main steel structure is installed and the strength of the lower bay window plate 16 reaches 75% of the design strength, the temporary support frame 17 is fixed with the lower bay window plate 16 as a temporary support fixing point. The prefabricated upper bay window plate 1 is hoisted to the designated position. After the protruding end of the transverse reinforcing bar 7 passes through the round hole 10, the steel shims 4 and fixing nuts 5 are installed one by one. The number of fixing nuts 5 is at least two. At the same time, the support frame 17 supports the bottom of the prefabricated upper bay window plate 1.

[0043] S4. After the precast bay window upper plate 1 is installed, pour concrete into the pouring groove. In this embodiment, the concrete poured is C30 micro-expansion fine stone concrete 6. After the concrete solidifies and the strength reaches 75% of the design strength, remove the temporary support frame 17.

[0044] S5. After the temporary support frame 17 is removed, aerated concrete blocks 15 are filled into the filling groove, and then wire mesh 14 is attached. A fireproof layer 13 is formed by spraying a special fireproof coating for steel structure on the outer layer of the wire mesh 14.

[0045] S6. Construct the building insulation layer 11 and the plaster layer 12 layer by layer on the outer surface of the precast bay window upper plate 1.

[0046] The connection method between the prefabricated bay window top plate and the H-shaped steel beam is simple in connection, easy to construct, reasonable in force transmission path, simple in factory production, convenient in on-site installation, low in installation risk coefficient, low in requirement for the professional quality of construction workers, conducive to organizing workers, easy to achieve standardization, industrialization and integration, avoiding on-site wet operations, protecting the environment, saving the construction period, and having a flat surface, good appearance and guaranteed quality for the prefabricated bay window plate, especially applicable to the bay window top plate supporting the standardized steel structure residential system.

[0047] The connection method between the prefabricated bay window top plate and the H-shaped steel beam is simple in construction, low in risk coefficient, without welding operation, avoiding damage to the base material of the steel beam 2 and ensuring the construction quality.

[0048] Example Two:

[0049] On the basis of Example One, as Figure 1 and Figure 2 shown, it further includes that the lathe die for producing the prefabricated upper bay window plate 1 has measures for generating the plate concave-convex surface 8.

[0050] Example Three:

[0051] On the basis of Example One, as Figure 3 and Figure 4 shown, a plurality of partition rib plates 3 are respectively fixedly installed in the pouring groove and the filling groove.

Claims

1. A method for connecting a prefabricated assembled bay window roof panel to an H-beam, characterized in that: The cavity on the outdoor side of the steel beam is a casting groove, and the cavity on the indoor side is a filling groove. Includes the following steps: S1. Prefabricate the upper slab of the bay window according to the construction drawings. Connectors are provided at the ends of the prefabricated upper slab of the bay window. S2. Locate the position of the prefabricated bay window upper plate according to the detailed steel structure drawing, and drill round holes at the corresponding positions on the steel beam. The diameter of the round holes should be 1-4mm larger than the diameter of the connectors. S3. After the main steel structure is installed and the strength of the lower bay window plate reaches 75% of the design strength, use the lower bay window plate as a temporary support fixing point to fix the temporary support frame, hoist the precast bay window upper plate to the designated position, and connect and fix the connector through the round hole to the steel beam. At the same time, the support frame supports the bottom of the precast bay window upper plate. The precast bay window upper plate is equipped with a steel mesh, which is composed of N transverse reinforcing bars and M longitudinal reinforcing bars. The ends of the transverse reinforcing bars protrude from the precast bay window upper plate, and the longitudinal reinforcing bars are tied together at the connection with the transverse reinforcing bars. The connector is an external thread set on the protruding end of the transverse reinforcing bar. After the protruding end of the transverse reinforcing bar passes through the round hole, install steel washers and fixing nuts one by one. S4. After the precast bay window upper slab is installed, pour concrete into the pouring groove. After the concrete solidifies and reaches 75% of the design strength, remove the temporary support frame. S5. After the temporary support frame is removed, aerated concrete blocks are filled into the filling groove, and then wire mesh is attached. A fireproof coating for steel structures is sprayed on the outside of the wire mesh to form a fireproof layer. S6. Apply the building insulation layer and plaster layer layer by layer to the outer surface of the prefabricated bay window upper slab.

2. The method for connecting the prefabricated assembled bay window roof panel and the H-beam according to claim 1, characterized in that: It also includes measures for the lathe molds used to produce the upper slab of the prefabricated bay window to have measures to create the uneven surface of the slab.

3. The method for connecting the prefabricated assembled bay window roof panel and the H-beam according to claim 1, characterized in that: The diameter of the circular hole is 2mm larger than the diameter of the transverse reinforcing bar.

4. The method for connecting the prefabricated assembled bay window roof panel to the H-steel beam according to any one of claims 1-3, characterized in that: The concrete poured into the casting tank is C30 micro-expansion fine aggregate concrete.

5. The method for connecting the prefabricated assembled bay window roof panel and the H-beam according to claim 1, characterized in that: The number of fixing nuts is at least two.

6. The method for connecting the prefabricated assembled bay window roof panel and the H-beam according to claim 1, characterized in that: The steel beam is an H-shaped steel beam.

7. The method for connecting the prefabricated assembled bay window roof panel and the H-beam according to claim 4, characterized in that: Multiple partition ribs are fixedly installed in the casting groove and the filling groove, respectively.

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