Connection node between top of steel column and composite slab of corrugated steel plate and construction method

Abstract

A connection node and construction method between the top of a steel column and a corrugated steel plate concrete composite slab, the node includes a steel column, a corrugated steel plate concrete composite slab, a support angle steel, a connecting steel plate, a high-strength bolt, a pre-welded screw and a stud; the connecting steel plate is welded to the top of the steel column; the corrugated steel plate concrete composite slab is fixed on the top of the connecting steel plate, and the support angle steel is connected between the connecting steel plate and the steel column; the corrugated steel plate concrete composite slab is divided into a semi-prefabricated and a fully prefabricated structure. The method is: make a steel column, a corrugated steel plate concrete composite slab and a support angle steel; install the steel column to a designated position; send the support angle steel to a designated position and align the reserved bolt holes, fix the horizontal limb of the support angle steel to the connecting steel plate by pre-welding screws, and fix the vertical limb of the support angle steel to the steel column by high-strength bolts; hoist the corrugated steel plate concrete composite slab to the top of the connecting steel plate at the top of the steel column and align the studs and the reserved stud holes, the corrugated steel plate concrete composite slab falls, and the pouring of the post-cast concrete is completed.

Description

Technical Field

[0001] The invention belongs to the technical field of building engineering, and in particular relates to a connection node between a steel column top and a corrugated steel plate concrete composite slab and a construction method. Background Art

[0002] The stress characteristics of the slab-column structure under horizontal loads are similar to those of the frame structure. The frame beam is replaced by a plate on the column, which is a special case of the frame structure. At present, my country's prefabricated concrete structure system is at an important stage of development and is widely used in slab-column structures. Compared with traditional cast-in-place construction methods, prefabricated buildings have greatly reduced the consumption of energy resources during the construction process, reduced environmental pollution caused by traditional construction and temporary land use on the project site, improved the working environment of workers, and effectively improved labor productivity.

[0003] The corrugated steel plate concrete composite slab can make full use of both steel and concrete, and has the advantages of high rigidity, high bearing capacity, and convenient construction and operation. Therefore, it is widely used in high-rise buildings, large-span structures and large bridge structures. In the corrugated steel plate concrete composite slab, the role of the corrugated steel plate is equivalent to the tensile main steel bar, which is used to resist the positive bending moment of the slab surface.

[0004] As a load-bearing structure, steel columns are not only light in weight, which can significantly reduce the vertical load and seismic effects transmitted from the structure to the foundation, but also have good ductility and strong adaptability to dynamic loads, enabling the structure to resist deformation in strong earthquakes.

[0005] Therefore, the slab-column structure of steel columns and corrugated steel plate concrete composite slabs can make full use of their respective structural characteristics, thereby improving the lateral stiffness and seismic performance of the slab-column structure. However, the specific method of connecting the top of the steel column and the corrugated steel plate concrete composite slab becomes the key. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a connection node and a construction method for the top of a steel column and a corrugated steel plate concrete composite slab, which can take into account both construction efficiency and economic benefits while ensuring a stable connection between the top of the steel column and the corrugated steel plate concrete composite slab, avoiding the problems of heavy concrete slabs, low strength and high cost of steel structures, reducing the dead weight of the structure, and improving the integrity, stability and seismic resistance of the slab-column structure.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a connection node between the top of a steel column and a corrugated steel plate concrete composite plate, comprising a steel column, a corrugated steel plate concrete composite plate, a supporting angle steel, a connecting steel plate, high-strength bolts, pre-welded screws and studs; the connecting steel plate is horizontally welded and fixedly installed on the top of the steel column; the supporting angle steel is located between the connecting steel plate and the corrugated steel plate concrete composite plate, the vertical limb of the supporting angle steel is fixedly connected to the steel column by a high-strength bolt, and the horizontal limb of the supporting angle steel is fixedly connected to the connecting steel plate by a pre-welded screw; the number of the studs is several, and the several studs are evenly distributed on the upper surface of the connecting steel plate, the studs are vertically arranged, and the bottom ends of the studs are welded and fixedly connected to the upper surface of the connecting steel plate; a number of stud reserved holes are opened on the corrugated steel plate concrete composite plate, and the number of the stud reserved holes is the same as that of the studs and the positions correspond one to one.

[0008] A stiffening steel plate is welded and fixed on the top of the steel column, and a supporting angle steel is also arranged between the stiffening steel plate and the connecting steel plate. The horizontal limb of the supporting angle steel is fixedly connected to the connecting steel plate by a pre-welded screw, and the vertical limb of the supporting angle steel is fixedly connected to the stiffening steel plate.

[0009] The corrugated steel plate concrete composite panel is divided into a semi-prefabricated structure and a fully prefabricated structure; when the corrugated steel plate concrete composite panel adopts a semi-prefabricated structure, the thickness of the precast concrete of the corrugated steel plate concrete composite panel is half of the thickness of the full panel, the other half of the concrete of the corrugated steel plate concrete composite panel is post-cast concrete, and the bolt reserved holes are also filled with post-cast concrete; when the corrugated steel plate concrete composite panel adopts a fully prefabricated structure, the thickness of the precast concrete of the corrugated steel plate concrete composite panel is the thickness of the full panel, and only the bolt reserved holes are filled with post-cast concrete.

[0010] The construction method of the connection node between the top of the steel column and the corrugated steel plate concrete composite slab comprises the following steps:

[0011] Step 1: Make steel columns, corrugated steel plate concrete composite slabs and supporting angle steels;

[0012] ①. When making steel columns, first select steel sections as steel columns according to design requirements, then weld stiffening steel plates between the flanges on both sides of the top of the web of the steel sections to ensure that the stiffening steel plates are parallel to the web of the steel sections, and then set positions on the stiffening steel plates and the flanges of the steel sections to machine a specified number of reserved bolt holes; then select connecting steel plates according to design requirements, weld a specified number of pre-welded screws at set positions on the lower surface of the connecting steel plates, weld a specified number of studs at set positions on the upper surface of the connecting steel plates, and then weld the connecting steel plates with pre-welded screws and studs to the top of the steel sections;

[0013] ② When making the profiled steel plate concrete composite slab, first select the profiled steel plate according to the design requirements, and process the specified number of bolt reserved holes at the set position on the profiled steel plate, then support the formwork above the profiled steel plate, and lay the bidirectional steel mesh and the bolt reserved hole forming mold in the formwork, and finally pour concrete in the formwork until the concrete is solidified and formed; if the profiled steel plate concrete composite slab adopts a semi-prefabricated structure, the thickness of the precast concrete after solidification is half of the thickness of the full plate of the profiled steel plate concrete composite slab; if the profiled steel plate concrete composite slab adopts a fully prefabricated structure, the thickness of the precast concrete after solidification is the full plate thickness of the profiled steel plate concrete composite slab;

[0014] ③. When making the supporting angle steel, first select the right angle steel as the supporting angle steel according to the design size, and then process the specified number of reserved bolt holes at the set positions on the horizontal and vertical limbs of the supporting angle steel;

[0015] Step 2: Install and position the manufactured steel column to the designated position;

[0016] Step 3: Send the prepared support angle steel to the designated position on the top of the steel column, ensure that the pre-welded screws connecting the lower surface of the steel plate accurately pass through the reserved bolt holes on the horizontal limbs of the support angle steel, and ensure that the vertical limbs of the support angle steel are aligned with the reserved bolt holes on the steel column and the stiffening steel plate;

[0017] Step 4: Install and tighten the nuts on the pre-welded screws, insert high-strength bolts into the reserved bolt holes on the vertical limbs of the supporting angle steel, steel columns and stiffening steel plates, and tighten the nuts until the supporting angle steel is fixed on the steel column;

[0018] Step 5: Lift the prepared profiled steel plate concrete composite panel to the top of the steel column, align the bolt holes on the profiled steel plate concrete composite panel with the bolts on the upper surface of the connecting steel plate, and then control the profiled steel plate concrete composite panel to descend until the profiled steel plate concrete composite panel is accurately placed on the upper surface of the connecting steel plate, and the bolts enter the bolt holes;

[0019] Step 6: If the corrugated steel plate concrete composite slab adopts a semi-prefabricated structure, it is necessary to lay a bidirectional steel mesh on the semi-prefabricated corrugated steel plate concrete composite slab, and finally pour concrete in the formwork until the concrete is solidified and formed, and post-poured concrete is formed so that the corrugated steel plate concrete composite slab reaches the full plate thickness, and the assembly is completed; if the corrugated steel plate concrete composite slab adopts a fully prefabricated structure, it is only necessary to pour concrete in the reserved holes for the bolts until the concrete is solidified and formed, and the assembly is completed.

[0020] Beneficial effects of the present invention:

[0021] The connection node and construction method of the steel column top and the corrugated steel plate concrete composite slab of the present invention can take into account both construction efficiency and economic benefits while ensuring a stable connection between the steel column top and the corrugated steel plate concrete composite slab, avoiding the problems of heavy concrete slabs, low strength and high steel structure costs, reducing the dead weight of the structure, and improving the integrity, stability and earthquake resistance of the slab-column structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a connection node between the top of a steel column and a profiled steel plate concrete composite slab (when the profiled steel plate concrete composite slab adopts a semi-prefabricated structure) according to the present invention;

[0023] Figure 2 for Figure 1 Middle AA section;

[0024] Figure 3 for Figure 1 Middle BB section;

[0025] Figure 4 for Figure 1 Middle CC section;

[0026] Figure 5 for Figure 1 Middle DD section;

[0027] Figure 6 It is a structural schematic diagram of a connection node between the top of a steel column and a profiled steel plate concrete composite slab (when the profiled steel plate concrete composite slab adopts a fully prefabricated structure) according to the present invention;

[0028] Figure 7 for Figure 6 Middle EE section;

[0029] Figure 8 It is a structural schematic diagram of a profiled steel plate concrete composite slab (semi-prefabricated structure) of the present invention;

[0030] Fig. 9 for Figure 8 Middle FF section;

[0031] Fig.10 It is a structural schematic diagram of the profiled steel plate concrete composite slab (fully prefabricated structure) of the present invention;

[0032] Fig.11 for Fig.10 Middle GG section;

[0033] In the figure, 1 is a steel column, 2 is a stud, 3 is a bidirectional steel mesh, 4 is a high-strength bolt, 5 is a post-cast concrete, 6 is a corrugated steel plate concrete composite slab, 7 is a connecting steel plate, 8 is a supporting angle steel, 9 is a pre-welded screw, 10 is a reserved hole for stud, and 11 is a stiffening steel plate. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 11 As shown, a connection node between the top of a steel column and a corrugated steel plate concrete composite panel comprises a steel column 1, a corrugated steel plate concrete composite panel 6, a supporting angle steel 8, a connecting steel plate 7, a high-strength bolt 4, a pre-welded screw 9 and a stud 2; the connecting steel plate 7 is horizontally welded and fixedly installed on the top of the steel column 1; the supporting angle steel 8 is located between the connecting steel plate 7 and the corrugated steel plate concrete composite panel 6, the vertical limb of the supporting angle steel 8 is fixedly connected to the steel column 1 by the high-strength bolt 4, and the horizontal limb of the supporting angle steel 8 is fixedly connected to the connecting steel plate 7 by the pre-welded screw 9; the number of the studs 2 is several, and the several studs 2 are evenly distributed on the upper surface of the connecting steel plate 7, the studs 2 are vertically arranged, and the bottom ends of the studs 2 are welded and fixedly connected to the upper surface of the connecting steel plate 7; a plurality of stud reserved holes 10 are opened on the corrugated steel plate concrete composite panel 6, and the number of the stud reserved holes 10 is the same as that of the studs 2 and the positions correspond one to one.

[0036] A stiffening steel plate 11 is welded and fixed on the top of the steel column 1, and a supporting angle steel 8 is also arranged between the stiffening steel plate 11 and the connecting steel plate 7. The horizontal limb of the supporting angle steel 8 is fixedly connected to the connecting steel plate 7 by a pre-welded screw 9, and the vertical limb of the supporting angle steel 8 is fixedly connected to the stiffening steel plate 11.

[0037] The corrugated steel plate concrete composite panel is divided into a semi-prefabricated structure and a fully prefabricated structure; when the corrugated steel plate concrete composite panel adopts a semi-prefabricated structure, the thickness of the precast concrete of the corrugated steel plate concrete composite panel is half of the thickness of the full panel, the other half of the concrete of the corrugated steel plate concrete composite panel is post-cast concrete 5, and the bolt reserved holes 10 are also filled with post-cast concrete 5; when the corrugated steel plate concrete composite panel adopts a fully prefabricated structure, the thickness of the precast concrete of the corrugated steel plate concrete composite panel is the thickness of the full panel, and only the bolt reserved holes 10 are filled with post-cast concrete 5.

[0038] The construction method of the connection node between the top of the steel column and the corrugated steel plate concrete composite slab comprises the following steps:

[0039] Step 1: Make steel columns 1, profiled steel plate concrete composite slabs 6 and supporting angle steels 8;

[0040] ①, when making a steel column, first select a steel section as the steel column according to the design requirements, then weld a stiffening steel plate 11 between the flanges on both sides of the top of the web of the steel section, ensure that the stiffening steel plate 11 is parallel to the web of the steel section, and then set a specified number of reserved bolt holes at set positions on the stiffening steel plate 11 and the flange of the steel section; then first select a connecting steel plate 7 according to the design requirements, weld a specified number of pre-welded screws 9 at set positions on the lower surface of the connecting steel plate 7, weld a specified number of studs 2 at set positions on the upper surface of the connecting steel plate 7, and then weld the connecting steel plate 7 with the pre-welded screws 9 and studs 2 to the top of the steel section;

[0041] ② When making the profiled steel plate concrete composite slab, first select the profiled steel plate according to the design requirements, and process the specified number of bolt reserved holes 10 at the set position on the profiled steel plate, then support the formwork above the profiled steel plate, and lay the bidirectional steel mesh 3 and the bolt reserved hole 10 forming mold in the formwork, and finally pour concrete in the formwork until the concrete is solidified and formed; if the profiled steel plate concrete composite slab adopts a semi-prefabricated structure, the thickness of the precast concrete after solidification is half of the full thickness of the profiled steel plate concrete composite slab; if the profiled steel plate concrete composite slab adopts a fully prefabricated structure, the thickness of the precast concrete after solidification is the full thickness of the profiled steel plate concrete composite slab;

[0042] ③. When making the support angle steel 8, first select the right angle steel as the support angle steel 8 according to the design size, and then process the specified number of reserved bolt holes at the set positions on the horizontal limb and vertical limb of the support angle steel 8;

[0043] Step 2: Install and position the manufactured steel column 1 at the designated position;

[0044] Step 3: Send the prepared support angle steel 8 to the designated position on the top of the steel column 1, ensure that the pre-welded screws 9 connected to the lower surface of the steel plate 7 accurately pass through the reserved bolt holes on the horizontal limbs of the support angle steel 8, and ensure that the vertical limbs of the support angle steel 8 are aligned with the reserved bolt holes on the steel column 1 and the stiffening steel plate 11;

[0045] Step 4: Install and tighten the nut on the pre-welded screw 9, and insert the high-strength bolt 4 into the reserved bolt holes on the vertical limb of the support angle steel 8, the steel column 1 and the stiffening steel plate 11, and tighten the nut until the support angle steel 8 is fixed on the steel column 1;

[0046] Step 5: hoist the prepared profiled steel plate concrete composite panel 6 to the top of the steel column 1, align the bolt holes 10 on the profiled steel plate concrete composite panel 6 with the bolts 2 on the upper surface of the connecting steel plate 7, and then control the profiled steel plate concrete composite panel 6 to descend until the profiled steel plate concrete composite panel 6 is accurately placed on the upper surface of the connecting steel plate 7, and the bolts 2 enter the bolt holes 10;

[0047] Step six: If the corrugated steel plate concrete composite slab 6 adopts a semi-prefabricated structure, it is necessary to lay a bidirectional steel mesh 3 on top of the semi-prefabricated corrugated steel plate concrete composite slab 6, and finally pour concrete in the formwork until the concrete is solidified and formed, and post-poured concrete 5 is formed, so that the corrugated steel plate concrete composite slab 6 reaches the full plate thickness, and the assembly is completed; if the corrugated steel plate concrete composite slab 6 adopts a fully prefabricated structure, it is only necessary to pour concrete in the bolt reserved holes 10 until the concrete is solidified and formed, and the assembly is completed.

[0048] The solutions in the embodiments are not intended to limit the patent protection scope of the present invention. All equivalent implementations or changes that do not deviate from the present invention are included in the patent scope of this case.

Claims

1. A connection node between the top of a steel column and a corrugated steel plate concrete composite slab, characterized in that: It comprises a steel column, a corrugated steel plate concrete composite panel, a supporting angle steel, a connecting steel plate, high-strength bolts, pre-welded screws and studs; the connecting steel plate is horizontally welded and fixedly installed on the top of the steel column; the supporting angle steel is located between the connecting steel plate and the corrugated steel plate concrete composite panel, the vertical limb of the supporting angle steel is fixedly connected to the steel column by a high-strength bolt, and the horizontal limb of the supporting angle steel is fixedly connected to the connecting steel plate by a pre-welded screw; the number of the studs is several, and the several studs are evenly distributed on the upper surface of the connecting steel plate, the studs are vertically arranged, and the bottom ends of the studs are welded and fixedly connected to the upper surface of the connecting steel plate; a number of stud reserved holes are opened on the corrugated steel plate concrete composite panel, and the number of the stud reserved holes is the same as that of the studs and the positions correspond one to one; a stiffener is welded and fixedly installed on the top of the steel column Steel plate, a supporting angle steel is also arranged between the stiffening steel plate and the connecting steel plate, and the horizontal leg of the supporting angle steel is fixedly connected to the connecting steel plate by a pre-welded screw, and the vertical leg of the supporting angle steel is fixedly connected to the stiffening steel plate; the corrugated steel plate concrete composite panel is divided into a semi-prefabricated structure and a fully prefabricated structure; when the corrugated steel plate concrete composite panel adopts a semi-prefabricated structure, the thickness of the precast concrete of the corrugated steel plate concrete composite panel is half of the thickness of the full panel, the other half of the concrete of the corrugated steel plate concrete composite panel is post-cast concrete, and the bolt reserved holes are also filled with post-cast concrete; when the corrugated steel plate concrete composite panel adopts a fully prefabricated structure, the thickness of the precast concrete of the corrugated steel plate concrete composite panel is the thickness of the full panel, and only the bolt reserved holes are filled with post-cast concrete.

2. The construction method of the connection node between the top of the steel column and the corrugated steel plate concrete composite slab according to claim 1 is characterized in that The steps include: Step 1: Make steel columns, corrugated steel plate concrete composite slabs and supporting angle steels; ①. When making steel columns, first select steel sections as steel columns according to design requirements, then weld stiffening steel plates between the flanges on both sides of the top of the web of the steel sections to ensure that the stiffening steel plates are parallel to the web of the steel sections, and then set positions on the stiffening steel plates and the flanges of the steel sections to machine a specified number of reserved bolt holes; then select connecting steel plates according to design requirements, weld a specified number of pre-welded screws at set positions on the lower surface of the connecting steel plates, weld a specified number of studs at set positions on the upper surface of the connecting steel plates, and then weld the connecting steel plates with pre-welded screws and studs to the top of the steel sections; ② When making the profiled steel plate concrete composite slab, first select the profiled steel plate according to the design requirements, and process the specified number of bolt reserved holes at the set position on the profiled steel plate, then support the formwork above the profiled steel plate, and lay the bidirectional steel mesh and the bolt reserved hole forming mold in the formwork, and finally pour concrete in the formwork until the concrete is solidified and formed; if the profiled steel plate concrete composite slab adopts a semi-prefabricated structure, the thickness of the precast concrete after solidification is half of the thickness of the full plate of the profiled steel plate concrete composite slab; if the profiled steel plate concrete composite slab adopts a fully prefabricated structure, the thickness of the precast concrete after solidification is the full plate thickness of the profiled steel plate concrete composite slab; ③. When making the supporting angle steel, first select the right angle steel as the supporting angle steel according to the design size, and then process the specified number of reserved bolt holes at the set positions on the horizontal and vertical limbs of the supporting angle steel; Step 2: Install and position the manufactured steel column to the designated position; Step 3: Send the prepared support angle steel to the designated position on the top of the steel column, ensure that the pre-welded screws connecting the lower surface of the steel plate accurately pass through the reserved bolt holes on the horizontal limbs of the support angle steel, and ensure that the vertical limbs of the support angle steel are aligned with the reserved bolt holes on the steel column and the stiffening steel plate; Step 4: Install and tighten the nuts on the pre-welded screws, insert high-strength bolts into the reserved bolt holes on the vertical limbs of the supporting angle steel, steel columns and stiffening steel plates, and tighten the nuts until the supporting angle steel is fixed on the steel column; Step 5: Lift the prepared profiled steel plate concrete composite panel to the top of the steel column, align the bolt holes on the profiled steel plate concrete composite panel with the bolts on the upper surface of the connecting steel plate, and then control the profiled steel plate concrete composite panel to descend until the profiled steel plate concrete composite panel is accurately placed on the upper surface of the connecting steel plate, and the bolts enter the bolt holes; Step 6: If the corrugated steel plate concrete composite slab adopts a semi-prefabricated structure, it is necessary to lay a bidirectional steel mesh on the semi-prefabricated corrugated steel plate concrete composite slab, and finally pour concrete in the formwork until the concrete is solidified and formed, and post-poured concrete is formed so that the corrugated steel plate concrete composite slab reaches the full plate thickness, and the assembly is completed; if the corrugated steel plate concrete composite slab adopts a fully prefabricated structure, it is only necessary to pour concrete in the reserved holes for the bolts until the concrete is solidified and formed, and the assembly is completed.

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