Large-span steel structure corridor construction method

Abstract

The invention provides a large-span steel structure corridor construction method which comprises the steps that a prefabricated temporary bracket supporting assembly is divided into a first temporary bracket connecting piece and a second temporary bracket connecting piece, and the first temporary bracket connecting piece and a prefabricated steel structure column are fixed; the second temporary bracket connecting pieces are hinged to the prefabricated corridor ground assembling units; the steel structure columns are fixed on the tower building in place, the corridor ground assembling units are lifted in place, and the first temporary bracket connecting pieces and the second temporary bracket connecting pieces are fixed; subsequent high-load construction is conducted on the corridor ground assembling units, and after the subsequent high-load construction is completed, the corridor ground assembling units and the steel structure columns are fixed; and after the corridor ground assembling units and the steel structure columns are rigidly fixed, the temporary bracket supporting assemblies are dismantled. According to the construction method of the large-span steel structure corridor, the problem that an existing single connection mode cannot meet the construction requirements of the large-span and large-weight steel structure corridor can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and more specifically, to a construction method of a large-span steel structure corridor. Background Art

[0002] With the continuous development of the construction industry, the structural forms of buildings are becoming more and more diversified, the use of steel structures is becoming more frequent and diverse, and the combination of high-rise and super-high-rise towers with steel structure corridors is becoming more and more widely used.

[0003] Conventional steel structure corridor construction methods include ground assembly, overall hoisting, in-situ assembly on temporary support frames, or ground in-situ assembly and overall lifting. After being in place, the corridor is connected to the tower structure through supports. There are two connection methods: hinged connection and rigid connection. Each connection method has its own characteristics. The rigid connection requires the corridor itself to have high rigidity and small deformation; the hinged connection allows the corridor itself to have a certain degree of deformation.

[0004] However, most of the current steel structure corridors need to carry out the construction of steel trusses and floor decking, the binding of steel bars and the subsequent pouring of concrete after they are in place; after the steel structure corridor is in place, the subsequent construction (especially the pouring of concrete) will increase the load on the steel structure corridor. For some steel structure corridors with super-large spans and heavy weights, a single connection form cannot meet the load-bearing requirements of such steel structure corridors.

[0005] Based on this, there is an urgent need for a solution that can effectively improve the construction stability of ultra-large span and heavy weight steel structure corridors. Summary of the invention

[0006] In view of the above problems, the purpose of the present invention is to provide a large-span steel structure corridor construction method to solve the problem that the existing single connection method cannot meet the construction requirements of large-span and heavy-weight steel structure corridors.

[0007] The present invention provides a large-span steel structure corridor construction method, the construction method comprising:

[0008] Divide the prefabricated temporary corbel support assembly into a first temporary corbel connector and a second temporary corbel connector, fix the first temporary corbel connector to the prefabricated steel structure column, and hinge the second temporary corbel connector to the prefabricated corridor ground assembly unit;

[0009] Fixing the steel structure column in place on the tower, lifting the corridor ground assembly unit in place, and fixing the first temporary corbel connector and the second temporary corbel connector to complete the hinged connection between the corridor ground assembly unit and the tower;

[0010] Performing subsequent high-load construction on the corridor ground assembly unit;

[0011] After the subsequent high-load construction is completed, the corridor ground assembly unit and the steel structure column are rigidly fixed;

[0012] After the corridor ground assembly unit and the steel structure column are rigidly fixed, the temporary corbel support assembly is removed.

[0013] In addition, a preferred solution is that the first temporary corbel connector includes a first box-type corbel; the second temporary corbel connector includes a connected second box-type corbel and a box-type pier; wherein the first temporary corbel connector is fixed to the prefabricated steel structure column, and the second temporary corbel connector is hinged to the prefabricated corridor ground assembly unit, including:

[0014] The first box-shaped corbel is welded and fixed to the steel structure column, and the box-shaped pier is hinged to the corridor ground assembly unit through a fall chain; and

[0015] After the steel structure column is fixed in place on the tower and the corridor ground assembly unit is lifted into place, the first box-type corbel is horizontally aligned with the second temporary corbel.

[0016] In addition, a preferred solution is that the corridor ground assembly unit includes a chord rod; and after the steel structure column is fixed in place on the tower and the corridor ground assembly unit is lifted in place, the large-span steel structure corridor construction method further includes:

[0017] Slidingly hinge the box-shaped pier to the lower surface of the chord;

[0018] After the box-type pier is slidably hinged to the lower surface of the chord, the first box-type corbel and the second box-type corbel are welded and fixed.

[0019] In addition, a preferred solution is that slidingly hinge the box-shaped pier to the lower surface of the chord includes:

[0020] The box-type buttress is abutted against the lower surface of the chord, and lubricating oil is applied to the contact surface between the box-type buttress and the chord. The box-type buttress is slidingly hinged to the lower surface of the chord based on the lubricating oil and the fall chain.

[0021] In addition, a preferred solution is that the corridor ground assembly unit includes at least two chords, and the chords are connected by webs; and in the process of hinging the second temporary corbel connector with the prefabricated corridor ground assembly unit, at least one of the chords is hinged with the second temporary corbel connector.

[0022] In addition, a preferred solution is that a short connecting section is preset on the steel structure column, and after the steel structure column is fixed in place on the tower and the corridor ground assembly unit is lifted in place, the short connecting section is horizontally aligned with the chord rod; and,

[0023] After the first box-type corbel and the second box-type corbel are welded and fixed, the large-span steel structure corridor construction method further includes:

[0024] A limiting member is provided on the connecting short segment, wherein the limiting member is used to extend to the side of the chord rod to guide and limit the chord rod.

[0025] In addition, a preferred solution is that the limiting member includes limiting plates fixed on both sides of the connecting short segment, and the two limiting plates extend to both sides of the chord rod respectively; and,

[0026] When the corridor ground assembly unit moves based on the hinged relationship with the tower, the two limiting plates limit and guide the chord rod.

[0027] In addition, a preferred solution is that the subsequent high-load construction on the corridor ground assembly unit includes:

[0028] Laying floor decking on the corridor ground assembly unit;

[0029] Concrete is poured on the floor deck; wherein, during the process of pouring the concrete on the floor deck, the corridor ground assembly unit slides in the axial direction based on the hinged relationship with the tower.

[0030] In addition, a preferred solution is that after the subsequent high-load construction is completed, the corridor ground assembly unit is fixed to the steel structure column, including:

[0031] After the concrete pouring is completed, the deformation of the corridor floor assembly unit ends;

[0032] The connecting short segment is welded and fixed to the chord rod to complete the rigid connection between the corridor ground assembly unit and the steel structure column.

[0033] In addition, a preferred solution is that the steel corridor includes at least two layers of corridor ground assembly units; and the large-span steel structure corridor construction method further includes:

[0034] After the floor assembly units of the corridors on each floor are installed, the construction of the steel corridors is completed.

[0035] Compared with the prior art, the large-span steel structure corridor construction method according to the present invention has the following beneficial effects:

[0036] The large-span steel structure corridor construction method provided by the present invention can complete the early hinging of the steel corridor by using temporary corbel support components, and can complete the later rigid connection of the steel corridor by arranging short connecting sections on the rigid structure members, thereby realizing a construction method of first hinging and then rigidly connecting. For large-span and heavy-weight steel structures, it can not only meet the stable support of the steel structure corridor when in use, but also provide a deformation threshold for the steel structure corridor by hinging during the construction process, thereby avoiding damage to the steel structure corridor due to excessive stress given by concrete during subsequent construction.

[0037] In order to achieve the above and related purposes, one or more aspects of the present invention include features that will be described in detail later and are particularly pointed out in the claims. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all of these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easy to understand. In the accompanying drawings:

[0039] Figure 1 A front view of a large-span steel structure coupling beam after construction is completed provided by an embodiment of the present invention;

[0040] Figure 2 A top view of a large-span steel structure coupling beam after construction is completed provided in an embodiment of the present invention;

[0041] Figure 3 A partial front view structural diagram of the corridor ground assembly unit provided by an embodiment of the present invention being assembled on the ground;

[0042] Figure 4 This is a partial main structural diagram of the corridor ground assembly unit provided by the present invention after it is lifted into place;

[0043] Figure 5 A partial top view of the structure after the ground assembly unit of the corridor provided by the present invention is lifted into place;

[0044] Figure 6 A partial main structural diagram of the corridor ground assembly units provided by the present invention when they are finally rigidly connected;

[0045] Figure 7 The present invention provides a flowchart of a method for constructing a large-span steel structure coupling beam in accordance with an embodiment of the present invention.

[0046] Reference numerals: first box-type corbel 1-1, second box-type corbel 1-2, box-type buttress 2, fall chain 3, lubricating oil 4, limit steel plate 5, steel structure column 6, chord 7, assembly bracket 8, connecting short segment 9;

[0047] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0048] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is apparent that these embodiments may also be implemented without these specific details. In other examples, for ease of describing one or more embodiments, known structures and devices are shown in the form of block diagrams.

[0049] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] Figure 1 The main structure of the large-span steel structure coupling beam provided by the embodiment of the present invention after construction is completed is shown. Figure 2 The top view of the large-span steel structure coupling beam provided by the embodiment of the present invention after construction is completed is shown. Figure 3 4 shows a partial main view structure of the corridor ground assembly unit provided by an embodiment of the present invention being assembled on the ground, 5 shows a partial main view structure of the corridor ground assembly unit provided by the present invention after being lifted into place, Figure 5 The figure shows a partial top view of the structure of the corridor ground assembly unit provided by the present invention after it is lifted into place. Figure 6 The partial main view structure of the corridor ground assembly units provided by the present invention when finally rigidly connected is shown.

[0051] It should be noted that before introducing the specific steps of the large-span steel structure corridor construction method provided by the present invention in detail, it is necessary to first briefly introduce the structure of the large-span steel structure corridor provided by the present invention and the structure of the tower connected thereto; Figures 1 to 4 It can be seen that the present invention provides a large-span steel structure corridor connected between two towers, and the two ends of the steel structure corridor are respectively connected to different towers. The tower includes a steel core tube in the middle and a steel structure frame connected around the core tube. Figure 1 As shown, it is composed of multi-layer corridor ground assembly units ( Figure 1 Four floors are shown), and both ends of the ground assembly unit of each floor of the corridor need to be connected to the steel structure frame on the tower; further, with respect to the ground assembly unit of the corridor, it includes multiple (at least two) chord rods 7, and the chord rods 7 are connected by web rods (not marked in the figure). The chord rods 7 and the web rods need to be assembled on the assembly bracket 8 on the ground first, and then they can be lifted to a preset height for connection with the tower; with respect to the steel structure frame outside the tower, in order to realize the connection between the steel structure corridor and the tower, the rigid structure columns can be first connected to the steel structure frame, and then the connecting short segments 9 corresponding to the chord rods 7 of the steel structure corridor can be welded on the steel structure columns 6. After the steel structure corridor is lifted into place, the connection between the steel structure corridor and the tower can be completed by welding and fixing the chord rods 7 and the connecting short segments 9.

[0052] The following is a detailed description of the large-span steel structure coupling beam construction method provided by the present invention. Figure 7 The process of the large-span steel structure coupling beam construction method provided by the embodiment of the present invention is shown, combined with Figures 1 to 7 It can be seen that the large-span steel structure corridor construction method provided by the present invention mainly includes the following construction methods:

[0053] S110: Divide the prefabricated temporary corbel support assembly into a first temporary corbel connector and a second temporary corbel connector, and fix the first temporary corbel connector to the prefabricated steel structure column 6 on the tower, and hinge the second temporary corbel connector to the corridor ground assembly unit of the prefabricated rigid structure corridor;

[0054] S120: fix the steel structure column 6 in place on the tower, lift the corridor ground assembly unit in place, and fix the first temporary corbel connector and the second temporary corbel connector to complete the hinged connection between the corridor ground assembly unit and the tower;

[0055] S130: performing subsequent high-load construction on the corridor ground assembly unit, and after the subsequent high-load construction is completed, rigidly fixing the corridor ground assembly unit to the steel structure column 6;

[0056] S140: After the corridor ground assembly unit and the steel structure column 6 are rigidly fixed, the temporary corbel support assembly is removed.

[0057] Specifically, for the pre-production of the corbel support assembly, it is necessary to first purchase steel plates and other components, and use the steel plates to make a large box-type corbel and a box-type pier 2, the large box-type corbel and the box-type pier 2 together constitute the corbel support assembly; further, the pre-made temporary corbel support assembly is divided into a first temporary corbel connector and a second temporary corbel connector, that is, the large box-type corbel is cut into sections, and the cutting is divided into two box-type corbels with the same cross-section but different lengths, wherein the longer section is recorded as the first box-type corbel 1-1 (that is, the first temporary corbel connector includes the first box-type corbel 1-1) and is connected to the steel structure The structural column 6 is welded and fixed, and then installed together with the steel structure column 6 (that is, the first temporary corbel connector is fixed to the prefabricated steel structure column 6), and the shorter section is recorded as the second box-type corbel 1-2 and assembled and fixed with the box-type pier 2 to form an assembly (that is, the second temporary corbel connector includes the connected second box-type corbel 1-2 and the box-type pier 2), and the box-type pier 2 is subsequently temporarily fixed to the bottom of the chord 7 of the corridor ground assembly unit through the fall chain 3 during the ground assembly of the corridor ground assembly unit (that is, the second temporary corbel connector is hinged to the prefabricated corridor ground assembly unit).

[0058] Furthermore, the first temporary corbel connector is fixed to the prefabricated steel structure column 6, and the second temporary corbel connector is hinged to the prefabricated corridor ground assembly unit, including:

[0059] The first box-shaped corbel 1-1 is welded and fixed to the steel structure column 6, and the box-shaped pier 2 is hinged to the corridor ground assembly unit through the fall chain 3 during the ground assembly process of the corridor ground assembly unit (such as Figure 3 and, after the steel structure column 6 is fixed in place on the tower and the corridor ground assembly unit is lifted into place, the first box-type corbel 1-1 is horizontally aligned with the second temporary corbel.

[0060] Furthermore, the corridor ground assembly unit includes a chord 7; and, after the steel structure column 6 is fixed in place on the tower, the corridor ground assembly unit is lifted into place, such as Figure 4 As shown, the large-span steel structure corridor construction method also includes:

[0061] The box-shaped pier 2 is slidably hinged to the lower surface of the chord 7;

[0062] After the box-type pier 2 is slidably hinged to the lower surface of the chord 7, the first box-type corbel 1-1 and the second box-type corbel 1-2 are welded and fixed, thereby realizing the hinge of the corridor ground assembly unit and the tower (at this time, the chord 7 is aligned with the connecting short segment 9, but no welding is performed).

[0063] In the actual design process, in order to realize the sliding hinge connection between the box-shaped pier 2 and the lower surface of the chord 7, the sliding hinge connection between the box-shaped pier 2 and the lower surface of the chord 7 may include:

[0064] The box-type pier 2 is butted against the lower surface of the chord 7, and lubricating oil 4 is applied to the contact surface between the box-type pier 2 and the chord 7. The box-type pier 2 is slidingly hinged to the lower surface of the chord 7 based on the lubricating oil 4 and the fall chain 3.

[0065] It should be noted that the corridor ground assembly unit includes multiple (at least two) chords 7, and the chords 7 are connected by webs; and, in the process of hinging the second temporary corbel connector with the prefabricated corridor ground assembly unit, at least one of the chords 7 needs to be hinged with the second temporary corbel connector to achieve the hinging of the corridor ground assembly unit and the tower.

[0066] In addition, in order to realize the connection between the corridor ground assembly unit and the steel structure column 6, a connecting short segment 9 is preset on the steel structure column 6 (which can be welded). After the steel structure column 6 is fixed in place on the tower and the corridor ground assembly unit is lifted in place, the connecting short segment 9 is horizontally aligned with the chord 7 (at this time, Figure 4 As shown, the connecting short segment 9 is not welded and fixed to the chord 7); and,

[0067] After the first box-type corbel 1-1 and the second box-type corbel 1-2 are welded and fixed, the large-span steel structure corridor construction method further includes:

[0068] A limiting member is provided on the connecting short segment 9 , wherein the limiting member is used to extend to the side of the chord rod 7 to guide and limit the chord rod 7 .

[0069] Specifically, in order to realize the guiding and limiting functions of the limiter on the chord 7, the limiter may include limit plates fixed on both sides of the connecting short segment 9, and the two limit plates extend to both sides of the chord 7 respectively; and, in the process of the corridor ground assembly unit moving based on the hinged relationship with the tower, the two limit plates limit and guide the chord 7.

[0070] It should be noted that if Figure 4As shown, after the corridor ground assembly unit is lifted into place, the box-type pier 2 is pressed against the lower surface of the chord 7, and the contact surface is coated with lubricating oil 4. Then, the butt weld between the first box-type corbel 1-1 and the second box-type corbel 1-2 is welded, so that the corridor ground assembly unit is stably placed on the top of the box-type corbel, and a limiting steel plate 5 is added to the connecting short segment 9 to realize the limiting guidance of the chord 7; at this time, the corridor ground assembly unit and the tower are in a hinged state.

[0071] After the corridor ground assembly unit is hinged with the tower, subsequent high-load construction is carried out on the corridor ground assembly unit, including:

[0072] Laying floor decking on the ground assembly unit of the corridor;

[0073] Concrete is poured on the floor deck; wherein, during the process of pouring the concrete on the floor deck, the corridor ground assembly unit slides axially based on the hinged relationship with the tower, thereby relieving the stress of the corridor ground assembly unit caused by the pouring concrete and avoiding damage to the corridor ground assembly unit.

[0074] After the subsequent high-load construction is completed (i.e., after the concrete pouring is completed), the corridor ground assembly unit is fixed to the steel structure column 6, including:

[0075] After the concrete pouring is completed, wait for the deformation of the corridor floor assembly unit to end (to release the stress caused by the pouring concrete on the corridor floor assembly unit); then weld and fix the connecting short segment 9 to the chord 7, and remove the temporary corbel support assembly to complete the rigid connection between the corridor floor assembly unit and the steel structure column 6.

[0076] It should be noted that the steel corridor includes multiple layers (at least two layers) of the corridor ground assembly units; therefore, the construction method of the large-span steel structure corridor should also include:

[0077] After the installation of the corridor ground assembly unit is completed, the construction of subsequent corridor ground assembly units will be carried out. After the installation of the corridor ground assembly units on each floor is completed, the construction of the steel structure corridor will be completed.

[0078] As above Figures 1 to 7 The large-span steel structure corridor construction method according to the present invention is described by way of example. However, those skilled in the art should understand that various improvements can be made to the large-span steel structure corridor construction method proposed by the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A method for constructing a large-span steel structure corridor, characterized in that: The construction method comprises: Divide the prefabricated temporary corbel support assembly into a first temporary corbel connector and a second temporary corbel connector, fix the first temporary corbel connector to the prefabricated steel structure column, and hinge the second temporary corbel connector to the prefabricated corridor ground assembly unit; Fixing the steel structure column in place on the tower, lifting the corridor ground assembly unit in place, and fixing the first temporary corbel connector and the second temporary corbel connector to complete the hinged connection between the corridor ground assembly unit and the tower; Performing subsequent high-load construction on the corridor ground assembly unit, and after the subsequent high-load construction is completed, rigidly fixing the corridor ground assembly unit to the steel structure column; After the corridor ground assembly unit and the steel structure column are rigidly fixed, the temporary corbel support assembly is removed.

2. The long-span steel structure corridor construction method according to claim 1, characterized in that: The first temporary corbel connector includes a first box-type corbel; the second temporary corbel connector includes a connected second box-type corbel and a box-type buttress; wherein the first temporary corbel connector is fixed to a prefabricated steel structure column, and the second temporary corbel connector is hinged to a prefabricated corridor ground assembly unit, including: The first box-shaped corbel is welded and fixed to the steel structure column, and the box-shaped pier is hinged to the corridor ground assembly unit through a fall chain; and After the steel structure column is fixed in place on the tower and the corridor ground assembly unit is lifted into place, the first box-type corbel is horizontally aligned with the second temporary corbel.

3. The long-span steel structure corridor construction method according to claim 2, characterized in that: The corridor ground assembly unit includes a chord rod; and after the steel structure column is fixed in place on the tower and the corridor ground assembly unit is lifted in place, the large-span steel structure corridor construction method further includes: Slidingly hinge the box-shaped pier to the lower surface of the chord; After the box-type pier is slidably hinged to the lower surface of the chord, the first box-type corbel and the second box-type corbel are welded and fixed.

4. The long-span steel structure corridor construction method according to claim 3, characterized in that: Sliding and hinge-connecting the box-shaped pier to the lower surface of the chord includes: The box-type buttress is abutted against the lower surface of the chord, and lubricating oil is applied to the contact surface between the box-type buttress and the chord. The box-type buttress is slidingly hinged to the lower surface of the chord based on the lubricating oil and the fall chain.

5. The long-span steel structure corridor construction method according to claim 4, characterized in that: The corridor ground assembly unit includes at least two chords, and the chords are connected by webs; and in the process of hingedly connecting the second temporary corbel connector to the prefabricated corridor ground assembly unit, at least one of the chords is hinged to the second temporary corbel connector.

6. The long-span steel structure corridor construction method according to claim 4, characterized in that: A short connecting section is preset on the steel structure column. After the steel structure column is fixed in place on the tower and the ground assembly unit of the corridor is lifted in place, the short connecting section is horizontally aligned with the chord rod; and, After the first box-type corbel and the second box-type corbel are welded and fixed, the large-span steel structure corridor construction method further includes: A limiting member is provided on the connecting short segment, wherein the limiting member is used to extend to the side of the chord rod to guide and limit the chord rod.

7. The method for constructing a long-span steel structure corridor according to claim 6, characterized in that: The limiting member includes limiting plates fixed on both sides of the connecting short segment, and the two limiting plates extend to both sides of the chord rod respectively; and, When the corridor ground assembly unit moves based on the hinged relationship with the tower, the two limiting plates limit and guide the chord rod.

8. The method for constructing a long-span steel structure corridor as claimed in claim 7, characterized in that: The subsequent high-load construction on the corridor ground assembly unit includes: Laying floor decking on the corridor ground assembly unit; Concrete is poured on the floor deck; wherein, during the process of pouring the concrete on the floor deck, the corridor ground assembly unit slides in the axial direction based on the hinged relationship with the tower.

9. The long-span steel structure corridor construction method according to claim 8, characterized in that: After the subsequent high-load construction is completed, the corridor ground assembly unit is fixed to the steel structure column, including: After the concrete pouring is completed, the deformation of the corridor floor assembly unit ends; The connecting short segment is welded and fixed to the chord rod to complete the rigid connection between the corridor ground assembly unit and the steel structure column.

10. The method for constructing a long-span steel structure corridor according to any one of claims 1 to 9, characterized in that: The steel corridor comprises at least two layers of corridor ground assembly units; and the large-span steel structure corridor construction method further comprises: After the corridor floor assembly unit is installed, the subsequent corridor floor assembly units are installed; After all the corridor ground assembly units are installed, the construction of the steel structure corridor is completed.

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