Method for hanging formwork for cast-in-place floor slab of steel structure building

Abstract

The invention discloses a method for hanging formwork for cast-in-place floor slabs of steel structure buildings, comprising the following steps: step S1: building a hanging formwork system at a construction site, the building hanging formwork system comprising: a floor slab support, the floor slab support comprising a plurality of support rods, and a floor slab placement interval is surrounded by the support rods; a hanging support is arranged on a top floor slab placement frame, and a fixed pulley device is arranged on the hanging support; each set of hanging devices comprises a winch, a traction rope and two sleeves, the two sleeves are arranged on a steel template, the winch is arranged on a bottom floor slab, one end of the traction rope is connected to the winch, and the other end passes through a sleeve, then bypasses the fixed pulley device, and then passes through another sleeve to be connected to the steel template; step S2: hanging the steel template to the floor slab placement frame of the top layer; step S3: after the casting of the upper steel template is completed, loosening the connection between the steel template and the traction rope, connecting with the next steel template, and repeating step S2 to complete the hanging of the steel template of the next floor slab placement frame.

Description

Technical Field

[0001] The invention relates to the field of steel structure building construction, in particular to a method for hanging formwork for cast-in-place floor slabs of steel structure buildings. Background Art

[0002] The floor support system is one of the most important measures in the construction of steel structures. Usually, scaffolding or permanent formwork is used to support the floor formwork at the construction site. However, the scaffolding support has a long erection period and cumbersome erection and dismantling procedures, which often restricts the speed of steel structure construction; and the permanent formwork is expensive. In order to combine the characteristics of steel structure buildings, simplify the formwork process, increase the construction speed and reduce the cost, it is necessary to use other formwork methods for operation. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a method for hanging formwork for cast-in-place floor slabs of steel structure buildings, which can improve the construction efficiency of cast-in-place floor slabs of steel structure buildings and reduce construction costs.

[0004] The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to the present invention comprises the following steps: Step S1: building a hanging formwork system at a construction site, wherein the hanging formwork system comprises: a floor slab support, wherein the floor slab support comprises a plurality of support rods, wherein the support rods are arranged vertically, and a floor slab placement interval is formed between the support rods, wherein the floor slab placement interval is provided with floor slab placement frames layer by layer, wherein the inner frames of the floor slab placement frames match the steel formwork to be hoisted, and the distance between adjacent floor slab placement frames is the floor height; a suspension support frame, wherein the suspension support frame is arranged on the floor slab placement frame at the top layer, and a fixed pulley device is arranged on the suspension support frame; and multiple sets of suspension devices, wherein each set of the suspension devices comprises a winch, a traction rope and two sleeves, and the length of the sleeves is greater than the thickness of the floor slab. The two sleeves are arranged on the steel formwork to provide a channel for the movement of the traction rope. The winch is arranged on the bottom floor. One end of the traction rope is connected to the winch, and the other end passes through one of the sleeves and then bypasses the fixed pulley device, and then passes through the other sleeve to be connected to the steel formwork; step S2: under the action of the winch, the steel formwork is hoisted to the floor placement frame of the top layer by the traction rope; step S3: after the casting of the previous steel formwork is completed, the connection between the steel formwork and the traction rope is released, and under the action of the winch, the traction rope moves down and is connected to the next steel formwork, and step S2 is repeated to complete the lifting of the steel formwork of the floor placement frame of the next layer, until the lifting of the steel formwork of the floor placement frame of the lowest layer is completed.

[0005] The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to the embodiment of the present invention has at least the following beneficial effects: no scaffolding support is required, the same set of equipment can be used to realize layer-by-layer construction from top to bottom, and turnover is convenient, the steel formwork binding can be completed at the bottom layer and then hung to the layer to be poured, the operation is convenient, there is no impact on the main steel structure, the cost is low, and the turnover rate is high.

[0006] According to some embodiments of the present invention, step S4 is also included to set a limit support device, the limit support device includes a plurality of groups of limit support units, each group of the limit support units includes a support square steel and a limit block, the support square steel is arranged on the lower surface of the steel formwork; during the hanging process of the steel formwork, when the steel formwork is hoisted between the floor placement frame to be installed and the floor placement frame of the next layer, the limit blocks are inserted into the square holes at both ends of the support square steel, the limit blocks extend outwardly from the frame of the floor placement frame, and during the hanging process of the steel formwork, the limit blocks are blocked by the frame of the floor placement frame to continue to move upward, so that the steel formwork is flush with the upper surface of the floor placement frame.

[0007] According to some embodiments of the present invention, the supporting square steels are arranged vertically and horizontally on the lower surface of the steel formwork.

[0008] According to some embodiments of the present invention, step S5 is further included, before pouring concrete on the steel formwork, under the action of the winch, the traction rope is tightened so that the traction rope has a certain pre-tightening force to ensure that the floor slab will not move downward after pouring.

[0009] According to some embodiments of the present invention, the suspension support frame includes a cross beam and piers, each end of the cross beam is fixed to the top floor placement frame through the pier, and each supporting beam of the cross beam is provided with a set of fixed pulley devices.

[0010] According to some embodiments of the present invention, the floor placement frame is a square frame.

[0011] According to some embodiments of the present invention, the traction rope is a steel wire rope.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0014] Figure 1 This is a structural schematic diagram of a hanging formwork system for building a construction site according to an embodiment of the present invention;

[0015] Figure 2 This is a schematic diagram of a suspension device according to an embodiment of the present invention being arranged on the floor placement frame at the top layer;

[0016] Figure 3 It is a schematic structural diagram of a position limiting support device provided on the lower surface of a steel formwork according to an embodiment of the present invention;

[0017] Figure 4 This is a structural schematic diagram of a limit support unit according to an embodiment of the present invention cooperating with a floor placement frame to limit the steel formwork;

[0018] Figure 5 The figure is a schematic diagram of the connection between the traction rope and the sleeve according to an embodiment of the present invention.

[0019] Reference numerals:

[0020] Support rod 110, floor placement interval 120, floor placement frame 130;

[0021] Steel formwork 200, suspension support frame 300, fixed pulley device 310, cross beam 320, buttress 330;

[0022] A winch 410, a traction rope 420, and a casing 430;

[0023] The limiting support unit 500 , the supporting square steel 510 , and the limiting block 520 . DETAILED DESCRIPTION

[0024] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated 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 should not be understood as a limitation on the present invention.

[0026] In the description of the present invention, "several" means more than one, "many" 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 technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] 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.

[0028] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0029] The method for hanging formwork for cast-in-place floor slabs of a steel structure building of the present invention comprises the following steps:

[0030] Step S1: Building a hanging formwork system at the construction site, where the hanging formwork system includes:

[0031] The floor support includes a plurality of support rods 110, the support rods 110 are arranged vertically, and the support rods 110 form a floor placement interval 120, and the floor placement interval 120 is provided with floor placement frames 130 layer by layer, and the inner frame of the floor placement frame 130 matches the steel formwork 200 to be hoisted, and the distance between adjacent floor placement frames 130 is the floor height;

[0032] A suspension support frame 300, the suspension support frame 300 is arranged on the top floor placement frame 130, and a fixed pulley device 310 is arranged on the suspension support frame 300;

[0033] Multiple sets of suspension devices, each set of suspension devices includes a winch 410, a traction rope 420 and two sleeves 430, the length of the sleeve 430 is greater than the thickness of the floor, the two sleeves 430 are arranged on the steel formwork 200 to provide a channel for the movement of the traction rope 420, the winch 410 is arranged on the bottom floor, one end of the traction rope 420 is connected to the winch 410, and the other end passes through a sleeve 430, then bypasses the fixed pulley device 310, and then passes through another sleeve 430 to connect with the steel formwork 200;

[0034] Step S2: Under the action of the winch, the steel formwork 200 is hoisted to the floor slab placement frame 130 on the top floor through the traction rope 420;

[0035] Step S3: After the casting of the previous steel formwork 200 is completed, the connection between the steel formwork 200 and the traction rope 420 is loosened. Under the action of the winch 410, the traction rope 420 moves down and connects to the next steel formwork 200, and repeats step S2 to complete the lifting of the steel formwork 200 of the next floor slab placement frame 130 until the lifting of the steel formwork 200 of the lowest floor slab placement frame 130 is completed.

[0036] The steel formwork 200 can be tied up at the bottom layer, and then lifted to the layer to be poured through the formwork lifting system. It is easy to operate, has no impact on the main steel structure, has low cost and high turnover rate.

[0037] In some embodiments of the present invention, step S4 is also included to set a limit support device, the limit support device includes a plurality of limit support units, each limit support unit 500 includes a support square steel 510 and a limit block 520, and the support square steel 510 is arranged on the lower surface of the steel template 200;

[0038] During the hanging process of the steel formwork 200, when the steel formwork 200 is hoisted between the floor placement frame 130 to be installed and the floor placement frame 130 of the next layer, upper limit blocks 520 are inserted into the square holes at both ends of the supporting square steel 510, and the limit blocks 520 extend outward from the frame of the floor placement frame 130. During the hanging process of the steel formwork 200, the limit blocks 520 continue to move upward through the frame of the floor placement frame 130, so that the steel formwork 200 is flush with the upper surface of the floor placement frame 130.

[0039] By setting a limit support device, the limit support device is used to clamp at the bottom of the floor placement frame 130 during the lifting process, ensuring that the steel template 200 is flush with the upper surface of the floor placement frame 130 after being hoisted in place. The limit block 520 is reasonably selected according to the thickness difference between the steel template 200 and the frame of the floor placement frame 130, ensuring that the steel template 200 is flush with the upper surface of the floor placement frame 130.

[0040] In some embodiments of the present invention, the supporting square steels 510 are arranged vertically and horizontally on the lower surface of the steel template 200 to provide uniform supporting force for the steel template 200 .

[0041] In some embodiments of the present invention, step S5 is also included, before pouring concrete on the steel formwork 200, under the action of the winch 410, the traction rope 420 is tightened so that the traction rope 420 has a certain pre-tightening force to ensure that the floor slab will not move downward after pouring.

[0042] In some embodiments of the present invention, the suspension support frame 300 includes a cross beam 320 and a pier 330. Each end of the cross beam 320 is fixed to the top floor placement frame 130 through the pier 330. Each support beam of the cross beam 320 is provided with a set of fixed pulley devices 310. The cross beam 320 structure of the suspension support frame 300 can be provided with four sets of fixed pulley devices 310, so that the steel formwork 200 is subjected to four upward hanging forces to ensure a steady rise during the hanging process. While the pier 330 supports the cross beam 320, it ensures that there is a certain height difference between the cross beam 320 and the floor placement frame 130 to ensure the casting height of the top steel formwork 200.

[0043] In some embodiments of the present invention, the floor placement frame 130 is a square frame, and can also be adaptively adjusted to some special-shaped steel formwork 200 structures.

[0044] In some embodiments of the present invention, the traction rope 420 is a steel wire rope, which has the characteristics of high structural strength and long service life.

[0045] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A method for hanging formwork for cast-in-place floor slabs of steel structure buildings, characterized in that: The following steps are involved: Step S1: Building a hanging formwork system at the construction site, wherein the building of the hanging formwork system comprises: A floor support, wherein the floor support comprises a plurality of support rods, the support rods are arranged vertically, and a floor placement interval is formed between the support rods. The floor placement interval is provided with floor placement frames layer by layer, and the inner frame of the floor placement frame matches the steel formwork to be hoisted, and the distance between adjacent floor placement frames is the floor height; A suspension support frame, the suspension support frame is arranged on the floor placement frame of the top layer, and a fixed pulley device is provided on the suspension support frame; Multiple sets of suspension devices, each set of the suspension devices includes a winch, a traction rope and two sleeves, the length of the sleeve is greater than the thickness of the floor, the two sleeves are arranged on the steel formwork to provide a channel for the movement of the traction rope, the winch is arranged on the bottom floor, one end of the traction rope is connected to the winch, and the other end passes through one of the sleeves, then bypasses the fixed pulley device, and then passes through another sleeve to connect to the steel formwork; Step S2: Under the action of the winch, the steel formwork is hoisted to the floor slab placement frame on the top floor by a traction rope; Step S3: After the casting of the previous steel formwork is completed, the connection between the steel formwork and the traction rope is loosened. Under the action of the winch, the traction rope moves down and connects with the next steel formwork, and repeats step S2 to complete the lifting of the steel formwork of the floor slab placement frame of the next layer, until the lifting of the steel formwork of the floor slab placement frame of the lowest layer is completed.

2. The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to claim 1, characterized in that: The step S4 further includes setting a limit support device, wherein the limit support device includes a plurality of groups of limit support units, each group of the limit support units includes a support square steel and a limit block, and the support square steel is arranged on the lower surface of the steel template; During the hanging process of the steel formwork, when the steel formwork is hoisted between the floor placement frame to be installed and the floor placement frame of the next layer, the limit blocks are inserted into the square holes at both ends of the supporting square steel, and the limit blocks extend outward from the frame of the floor placement frame. During the hanging process of the steel formwork, the limit blocks are blocked by the frame of the floor placement frame to continue to move upward, so that the steel formwork is flush with the upper surface of the floor placement frame.

3. The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to claim 2, characterized in that: The supporting square steels are arranged vertically and horizontally on the lower surface of the steel template.

4. The method for hanging formwork for cast-in-place floor slab of steel structure building according to claim 2 or 3, characterized in that: The method further comprises step S5, wherein before pouring concrete on the steel formwork, the traction rope is tightened under the action of the winch so that the traction rope has a certain pre-tightening force to ensure that the floor slab will not be displaced downward after pouring.

5. The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to claim 1, characterized in that: The suspension support frame includes a cross beam and a pier, each end of the cross beam is fixed on the top floor placement frame through the pier, and each supporting beam of the cross beam is provided with a group of fixed pulley devices.

6. The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to claim 1, characterized in that: The floor placement frame is a square frame.

7. The method for hanging formwork for cast-in-place floor slabs of steel structure buildings according to claim 1, characterized in that: The traction rope is a steel wire rope.

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