Jacking reverse building method and device for single-column spiral stairway

Abstract

The invention provides a jacking reverse building method and device for a single-column spiral stair. According to the jacking reverse construction method, a stable horizontal support is matched with a stable support and jacking equipment to achieve segmented reverse construction of a single column and steps of the spiral stairway, and stairway construction operation points are concentrated at the bottom. The stable support and the stable horizontal support can be disassembled into section steel parts to be carried to the site to be assembled, jacking equipment is small in size, manual carrying can be achieved, and operation measures and construction are convenient and fast. The defects that the single-column spiral staircase cannot be hoisted by means of a large machine in a limited environment, and the work efficiency is greatly reduced when the building height of the single-column spiral staircase is increased are overcome.

Description

Technical Field

[0001] The invention relates to the technical field of spiral staircase construction, and in particular to a jacking-up and reverse construction method and device for a single-column spiral staircase. Background Art

[0002] In the scenic area observation tower, the basic structural elements include vertical passages and top viewing platforms, on this basis, protective railings, lighting equipment and other elements are added.

[0003] The observation towers in scenic spots are often located in special environments such as high mountains or primeval forests. They may be difficult to access by crane, and their construction relies heavily on manual labor and some small tools. As the height of the observation tower increases, the vertical transportation height increases, the construction efficiency decreases significantly, and the safety risk increases significantly. Therefore, it is a technical problem that needs to be solved urgently to develop a new construction method for a single-column spiral staircase to solve the problem of increasing construction difficulty and low efficiency as the construction height increases. Summary of the invention

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a method and device for jacking up and reverse construction of a single-column spiral staircase to overcome the disadvantages of being unable to use large-scale mechanical lifting in a restricted environment and the significant reduction in work efficiency when the construction height of the single-column spiral staircase is increased.

[0005] To achieve the above-mentioned object, in a first aspect, the present invention provides a method for jacking up and down construction of a single-column spiral staircase, characterized in that it comprises the following steps:

[0006] Step S1, splitting the spiral staircase into a plurality of single columns and stair treads;

[0007] Step S2, making a stable support; the height of the stable support is not less than the height of two single columns of the spiral staircase;

[0008] Step S3, the bottom of the first column of the spiral staircase is anchored on the foundation and detachably fixedly connected to the center of the bottom surface of the stabilizing bracket;

[0009] Step S4, placing the single column of the topmost spiral staircase on the first column, and installing a stabilizing horizontal support; one side of the stabilizing horizontal support is detachably fixedly connected to the single column, and the other side is not connected to the stabilizing support, but is limited in the horizontal direction by the stabilizing support;

[0010] Step S5, assembling the stair treads of the topmost spiral staircase;

[0011] Step S6, arranging the jacking equipment and connecting it reliably with the stable horizontal support to ensure that the stable horizontal support is always in a horizontal state during the jacking process;

[0012] Step S7, raising the topmost spiral staircase by a segment height using the lifting device;

[0013] Step S8, placing the single column of the second spiral staircase from the top directly below the single column of the top spiral staircase, and slightly lowering the height by means of a lifting device, so that the two single columns are reliably connected;

[0014] Step S9, the lifting device is retracted downward, and the stable horizontal support is moved down to the single column of the next spiral staircase, so that it is reliably connected to the lifting device, and the stair treads of the next spiral staircase are installed;

[0015] Step S10, repeating steps S7 to S9 to sequentially complete the installation of the following sections of the spiral staircase;

[0016] Step S11, remove the stabilizing bracket, the lifting equipment, and the stabilizing horizontal support, and the installation of the single-column spiral staircase is completed.

[0017] The present invention creatively proposes a method for jacking and reverse construction of a single-column spiral staircase, which realizes segmented reverse construction of the single column and steps of the spiral staircase by using a stable horizontal support in combination with a stable bracket and a jacking device, so that the construction work points are concentrated at the bottom, vertical transportation is almost non-existent, the risk of high-altitude operations is avoided, and the difficulty of installing a single-column spiral staircase under environmental constraints is overcome.

[0018] In some embodiments of the first aspect of the present application, the stabilizing bracket includes a base and a plurality of columns and horizontal rods thereon; the horizontal rods are arranged around the columns. Such a stabilizing bracket can be disassembled into steel parts and transported to the site for assembly. The height of the columns is not less than the height of two single columns of the spiral staircase, so as to achieve the effect of stabilizing the spiral staircase.

[0019] In some embodiments of the first aspect of the present application, the outer side of the single column is symmetrically provided with a step bracket along the radial direction; the stabilizing horizontal support is connected to the single column through the step bracket by using a flange node. This connection method has good practicality and connection stability.

[0020] In some embodiments of the first aspect of the present application, during the jacking process, one side of the stabilizing horizontal support is connected to the single column's measure bracket by a flange node, and the other side slides up and down along the column of the stabilizing bracket to achieve the purpose of no connection between the stabilizing horizontal support and the stabilizing bracket, but being limited in the horizontal direction by the stabilizing bracket.

[0021] In some embodiments of the first aspect of the present application, the corbel is removed after the spiral staircase is installed.

[0022] In some embodiments of the first aspect of the present application, when the height of the spiral staircase is too high, the stability of the structure itself is poor. Before the implementation of step S4, a guy rope is preset on the single column of the top section of the spiral staircase. As the lifting height increases, the guy rope is slowly relaxed to enhance the stability of the spiral staircase during the lifting process.

[0023] In a second aspect, the present invention provides a jacking and reverse construction device for a single-column spiral staircase, characterized in that the jacking and reverse construction method for the single-column spiral staircase as described above is implemented, comprising:

[0024] The stabilizing bracket shall be no less than the height of two columns of the spiral staircase, and the columns of each section of the spiral staircase shall be arranged at the center of the bottom;

[0025] A stabilizing horizontal support, which is horizontally arranged in the stabilizing bracket and has one side detachably fixedly connected to a segmented single column of the spiral staircase;

[0026] The jacking device lifts the segmented single column of the spiral staircase by jacking the stable horizontal support.

[0027] In some embodiments of the second aspect of the present application, the stabilizing bracket includes a base and a plurality of columns and horizontal rods thereon; the horizontal rods are arranged around the columns. Such a stabilizing bracket can be disassembled into steel parts and transported to the site for assembly. The height of the columns is not less than the height of two single columns of the spiral staircase to achieve the effect of stabilizing the spiral staircase.

[0028] In some embodiments of the second aspect of the present application, the outer side surface of the single column is symmetrically provided with a measure corbel along the radial direction; one side of the stable horizontal support is connected to the single column by means of the measure corbel using a flange node.

[0029] In some embodiments of the second aspect of the present application, the other side of the stabilizing horizontal support is close to the column of the stabilizing bracket, allowing sliding up and down along the column.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) Strong novelty: For tall structures, traditional vertical construction schemes require the use of lifting machinery for lifting; for restricted terrain such as mountainous areas and virgin forests, cranes cannot enter the site for operation; usually a very high external frame is built first, and then installed from bottom to top in sections by hand winches. The present invention creatively proposes a jacking-up reverse construction method, with the operation points concentrated at the bottom, avoiding the risk of high-altitude operations and overcoming the difficulty of installing a single-column spiral staircase under environmental constraints, which is novel.

[0032] (2) Strong practicality: By designing a jacking-up and reverse construction method, the relevant structures and components are lighter. Specifically, the stable bracket and stable horizontal support can be disassembled into steel parts and transported to the site for assembly. The jacking equipment can be small equipment such as jacks, which are much smaller than cranes and can be manually transported. The overall size and segment weight of the disassembled spiral staircase can meet the requirements of simple manpower or small machine tools for assisted transportation, which is feasible for construction operations in complex environments.

[0033] (3) More efficient: When using the vertical construction method, as the installation height increases, the vertical transportation distance of the spiral staircase columns and steps increases, and the transportation efficiency is significantly reduced. In the jacking-up reverse construction method proposed in the present invention, all operations are concentrated at the bottom, and there is almost no vertical transportation, which is more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn completely to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0035] Figure 1 This is a structural schematic diagram of step S1 of a method for jacking up and reverse manufacturing a single-column spiral staircase in one embodiment of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a jacking and reverse construction device for a single-column spiral staircase in one embodiment of the present invention;

[0037] Figure 3 It is a schematic diagram of a typical cross-sectional structure of a jacking and reverse construction device for a single-column spiral staircase in one embodiment of the present invention;

[0038] Figure 4 It is a structural schematic diagram of steps S2 and S3 of a method for jacking and reverse manufacturing of a single-column spiral staircase in one embodiment of the present invention;

[0039] Figure 5 It is a structural schematic diagram of steps S4 and S5 of a method for jacking up and reverse manufacturing of a single-column spiral staircase in one embodiment of the present invention;

[0040] Figure 6 This is a structural schematic diagram of step S6 of a method for jacking up and reverse manufacturing a single-column spiral staircase in one embodiment of the present invention;

[0041] Figure 7 This is a structural schematic diagram of step S7 of a method for jacking up and reverse manufacturing a single-column spiral staircase in one embodiment of the present invention;

[0042] Figure 8 This is a structural schematic diagram of step S8 of a method for jacking up and reverse manufacturing a single-column spiral staircase in one embodiment of the present invention;

[0043] Fig. 9 This is a structural schematic diagram of step S9 of a method for jacking up and reverse manufacturing a single-column spiral staircase in one embodiment of the present invention;

[0044] Fig.10 It is a structural schematic diagram corresponding to step S7 when installing a spiral staircase at the third section from the top of a single-column spiral staircase in one embodiment of the present invention;

[0045] Fig.11 It is a structural schematic diagram corresponding to step S8 when installing a spiral staircase at the third section from the top of a single-column spiral staircase in one embodiment of the present invention;

[0046] Fig.12 It is a structural schematic diagram corresponding to step S9 when installing a spiral staircase at the third section from the top of a single-column spiral staircase in one embodiment of the present invention;

[0047] Fig.13 This is a schematic diagram of the structure of a single-column spiral staircase in an embodiment of the present invention;

[0048] Fig.14 It is a structural schematic diagram of the construction process of a single-column spiral staircase with a guy rope installed in one embodiment of the present invention;

[0049] Among them, 1. Stable bracket; 2. Lifting equipment; 3. Stable horizontal support; 4. Spiral staircase; 5. Guy rope; 11. Base; 12. Column; 13. Horizontal rod; 41. Single column; 42. Stair tread; 43. Measures corbel; 44. First section column. DETAILED DESCRIPTION

[0050] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be understood that all of these exemplary embodiments described are only partial embodiments and examples of the present invention, rather than all of them. On the contrary, these exemplary embodiments are provided so that those skilled in the art can more thoroughly understand the present disclosure and can more completely convey the technical content of the present disclosure to those skilled in the art.

[0051] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the method can be welding or threaded connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] Example 1

[0053] This embodiment provides a method for jacking up and reverse construction of a single-column spiral staircase, comprising the following steps:

[0054] Step S1, see Figure 1 According to the weight and the limited site transportation conditions, the spiral staircase 4 is split into several sections of single columns 41 and stair steps 42.

[0055] Step S2, making a stable support 1; the height of the stable support 1 is not less than the height of the two single columns 41 of the spiral staircase. As a preferred technical solution, see Figure 2 and Figure 3 The stabilizing bracket 1 includes a base 11 and a plurality of columns 12 and horizontal rods 13 thereon; the horizontal rods 13 are arranged around the columns 12. Such a stabilizing bracket can be disassembled into steel parts and transported to the site for assembly. The height of the columns 12 is not less than the height of the two single columns 41 of the spiral staircase, so as to achieve the effect of stabilizing the spiral staircase.

[0056] Step S3, see Figure 4 The bottom of the first section column 44 of the spiral staircase 4 is anchored on the foundation and is detachably fixedly connected to the bottom center of the stable support 1 to constrain the entire stable support 1.

[0057] Step S4, see Figure 5 , place the single column 41 of the topmost spiral staircase on the first column 44, and install the stabilizing horizontal support 3; one side of the stabilizing horizontal support 3 is detachably fixedly connected to the single column 41, and the other side is not connected to the stabilizing support 1, but is limited in the horizontal direction by the stabilizing support 1. As a preferred technical solution, see Figure 2 and Figure 3 , the outer side of the single column 41 is symmetrically provided with a measure bracket 43 along the radial direction; the stable horizontal support 3 is connected to the single column 41 by a flange node through the measure bracket 43. This connection method has good practicality and connection stability.

[0058] Step S5, see Figure 5 , assemble the stair steps 42 of the topmost spiral staircase 4.

[0059] Step S6, see Figure 6 , arrange the lifting equipment 2 (such as a jack), and connect it reliably with the stable horizontal support 3 to ensure that the stable horizontal support 1 is always in a horizontal state during the lifting process.

[0060] Step S7, see Figure 7 , the topmost spiral staircase 4 is lifted up by a segment height through the lifting device 2. For the preferred technical solution, one side of the stable horizontal support 3 is connected to the single column's measure bracket 43 by a flange node, and the other side slides up and down along the column 12 of the stable support 1, so as to achieve the purpose of no connection between the stable horizontal support 3 and the stable support 1, but being limited in the horizontal direction by the stable support 1.

[0061] Step S8, see Figure 8 , place the single column 41 of the second spiral staircase 4 from the top directly below the single column 41 of the topmost spiral staircase, and slightly lower the elevation through the jacking device 2 so that the two sections of single columns are reliably connected.

[0062] Step S9, see Fig. 9 , the lifting device 2 is retracted downward, and the stable horizontal support 3 is moved down to the single column 41 of the next spiral staircase, so that it is reliably connected with the lifting device 2, and the stair steps 42 of the next spiral staircase are installed.

[0063] Step S10, see Figures 10 to 12 , repeat steps S7 to S9 to complete the installation of the third section of the spiral staircase from the top, and then complete the installation of the following sections of the spiral staircase 4 in sequence.

[0064] Step S11, see Figures 10 to 13 , remove the stabilizing bracket 1, the lifting device 2, and the stabilizing horizontal support 3. For the preferred technical solution, the corbel 43 can also be removed. The single-column spiral staircase 4 is installed.

[0065] From the above construction process, it can be seen that the working points of the jacking and reverse construction method of the single-column spiral staircase in the present invention are concentrated at the bottom, and there is almost no vertical transportation. It is more efficient and avoids the risks of high-altitude operations. It overcomes the difficulty of installing single-column spiral staircases under environmental constraints and is novel and creative.

[0066] Example 2

[0067] This embodiment provides a method for jacking up and reverse construction of a single-column spiral staircase, and its implementation process is similar to that of embodiment 1, except that the height of the single-column spiral staircase is too high and the stability of the structure itself is poor. Fig.14 Before the implementation of step S4, a guy rope 5 is preset on the single column 411 of the top spiral staircase. As the lifting height increases, the guy rope is slowly relaxed to enhance the stability of the spiral staircase during the lifting process.

[0068] Example 3

[0069] See also Figure 2 and Figure 3 This embodiment provides a jacking and reverse construction device for a single-column spiral staircase, which is used to implement the jacking and reverse construction method described in Example 1, including:

[0070] A stabilizing bracket 1, the height of which is not less than the height of two single columns 41 of the spiral staircase, and each single column of the spiral staircase is arranged at the bottom center;

[0071] A stabilizing horizontal support 3 is horizontally arranged in the stabilizing bracket 1, and one side is detachably fixedly connected to the segmented single column of the spiral staircase;

[0072] The lifting device 2 lifts the segmented single column of the spiral staircase by lifting the stable horizontal support 3.

[0073] As a preferred technical solution, the stabilizing bracket 1 includes a base 11 and a plurality of columns 12 and horizontal rods 13 thereon; the horizontal rods 13 are arranged around the columns 12. Such a stabilizing bracket can be disassembled into steel parts and transported to the site for assembly. The height of the column 12 is not less than the height of the two single columns 41 of the spiral staircase, so as to achieve the effect of stabilizing the spiral staircase.

[0074] As a preferred technical solution, further: a measure bracket 43 is symmetrically arranged on the outer side of the single column 41 along the radial direction; one side of the stable horizontal support 3 is connected to the single column 41 through the measure bracket 43 using a flange node.

[0075] As a preferred technical solution, further: the other side of the stabilizing horizontal support 3 is close to the column 12 of the stabilizing bracket 1, allowing sliding up and down along the column 12.

[0076] From the above construction process, it can be seen that the relevant structures and measures of the jacking device in the present invention are lighter. Specifically, the stable bracket and the stable horizontal support can be disassembled into steel parts and transported to the site for assembly. The jacking equipment is small in size and can be carried manually. The overall size and segmented weight of the spiral staircase after disassembly can meet the requirements of simple manpower or small-scale machine-assisted transportation, and it is feasible for construction operations in complex environments.

[0077] In summary, the present application provides a method and device for jacking and reverse construction of a single-column spiral staircase. The jacking and reverse construction method is achieved by installing a single column in sections, and reversely constructing a single-column stable horizontal support that moves up and down in conjunction with a stable bracket and a jacking device, so that the staircase construction work points are concentrated at the bottom. The stable bracket and the stable horizontal support can be disassembled into steel parts and transported to the site for assembly. The jacking equipment is small in size and can be manually transported, and the operation measures are convenient to construct. The present invention overcomes the disadvantages that a single-column spiral staircase cannot be hoisted with the help of large machinery in a restricted environment, and that the work efficiency of a single-column spiral staircase is greatly reduced when the construction height is increased.

[0078] In the description of this application, the terms "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0079] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A method for jacking up and reverse construction of a single-column spiral staircase, characterized in that: The following steps are involved: Step S1, splitting the spiral staircase (4) into a plurality of single columns (41) and stair steps (42); Step S2, manufacturing a stable support (1); the height of the stable support (1) is not less than the height of two single columns (41) of the spiral staircase; Step S3, the bottom of the first column (44) of the spiral staircase (4) is anchored to the foundation and detachably fixedly connected to the center of the bottom surface of the stabilizing bracket (1); Step S4, placing the single column (41) of the topmost section of the spiral staircase on the first section of the column (44), and installing a stabilizing horizontal support (3); one side of the stabilizing horizontal support (3) is detachably fixedly connected to the single column (41), and the other side is not connected to the stabilizing support (1), but is limited in the horizontal direction by the stabilizing support (1); Step S5, assembling the stair treads (42) of the topmost spiral staircase (4); Step S6, arranging the jacking equipment (2) and connecting it reliably with the stable horizontal support (3) to ensure that the stable horizontal support (1) is always in a horizontal state during the jacking process; Step S7, using the lifting device (2) to lift the topmost spiral staircase (4) to a segment height; Step S8, placing the single column (41) of the second spiral staircase (4) from the top directly below the single column (41) of the topmost spiral staircase, and slightly lowering the height by means of the lifting device (2) so that the two sections of the single column are reliably connected; Step S9, the lifting device (2) is retracted downward, and the stable horizontal support (3) is moved down to the single column (41) of the next spiral staircase, so that it is reliably connected to the lifting device (2), and the stair treads (42) of the next spiral staircase are installed; Step S10, repeating steps S7 to S9 to sequentially complete the installation of the following sections of the spiral staircase (4); Step S11, the stabilizing support (1), the lifting device (2), and the stabilizing horizontal support (3) are removed, and the installation of the single-column spiral staircase (4) is completed.

2. The method for jacking up and reversing a single-column spiral staircase according to claim 1, characterized in that: The stabilizing support (1) comprises a base (11) and a plurality of columns (12) and horizontal rods (13) thereon; the horizontal rods (13) are arranged around the columns (12); the height of the columns (12) is not less than the height of two single columns (41) of a spiral staircase.

3. The method for jacking up and reversing a single-column spiral staircase according to claim 2, characterized in that: The outer side surface of the single column (41) is symmetrically provided with a measure bracket (43) along the radial direction; the stable horizontal support (3) is connected to the single column (41) through the measure bracket (43) by adopting a flange node.

4. The method for jacking up and reverse manufacturing of a single-column spiral staircase according to claim 3, characterized in that: During the lifting process, one side of the stabilizing horizontal support (3) is connected to the single column's measure bracket (43) by a flange node, and the other side slides up and down along the column (12) of the stabilizing bracket (1).

5. The method for jacking up and reverse construction of a single-column spiral staircase according to claim 3, characterized in that: The said corbel (43) is removed after the installation of the spiral staircase is completed.

6. The method for jacking up and reverse manufacturing of a single-column spiral staircase according to claim 1, characterized in that: When the height of the spiral staircase (4) is too high, before the implementation of step S4, a guy rope (5) is preset on the single column (41) of the top section of the spiral staircase. As the lifting height increases, the guy rope is slowly relaxed to enhance the stability of the spiral staircase during the lifting process.

7. A jacking and reverse construction device for a single-column spiral staircase, characterized in that: A method for realizing the jacking and reverse construction of a single-column spiral staircase according to any one of claims 1 to 6, comprising: A stabilizing bracket (1) having a height not less than the height of two single columns (41) of the spiral staircase, and each single column of the spiral staircase is arranged at the bottom center; A stabilizing horizontal support (3) is horizontally arranged in the stabilizing bracket (1), and one side of the stabilizing horizontal support is detachably fixedly connected to the segmented single column of the spiral staircase; The lifting device (2) lifts the segmented single column of the spiral staircase by lifting the stable horizontal support (3).

8. The jacking and reverse construction device for a single-column spiral staircase according to claim 7, characterized in that: The stabilizing support (1) comprises a base (11) and a plurality of columns (12) and horizontal rods (13) thereon; the horizontal rods (13) are arranged around the columns (12); the height of the columns (12) is not less than the height of two single columns (41) of a spiral staircase.

9. The jacking and reverse construction device for a single-column spiral staircase according to claim 8, characterized in that: The outer side surface of the single column (41) is symmetrically provided with a measure bracket (43) along the radial direction; one side of the stable horizontal support (3) is connected to the single column (41) through the measure bracket (43) by using a flange node.

10. The jacking and reverse construction device for a single-column spiral staircase according to claim 9, characterized in that: The other side of the stabilizing horizontal support (3) is close to the column (12) of the stabilizing bracket (1), allowing it to slide up and down on the column (12).

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