CN114988310A - A system for inverting and transporting steel beams inside a core tube under a climbing formwork and a construction method thereof - Google Patents

Abstract

The invention discloses a system and a construction method for the reverse transportation and installation of steel beams inside a core tube under a climbing formwork, and relates to the technical field of large-scale material transportation and installation equipment for construction. and hooks; the hoisting and hoisting mechanism is arranged on the outer frame floor, and the hoisting and hoisting mechanism includes a square frame base and a hoist. The beneficial effects of the invention are: the device reasonably arranges the construction sequence of the outer frame of the core tube and the horizontal structure in the core tube, at the same time arranges a hoisting and hoisting mechanism on the outer frame of the core tube, and introduces the hoisting wire rope into the interior of the core tube through two pulley steering mechanisms Through the system and method, it is possible to realize the reverse transportation and installation of large materials such as steel beams at the bottom of the climbing formwork under the condition that the super high-rise core tube adopts a fully enclosed climbing formwork or a jacking platform system to construct the core tube shear wall first, thereby improving the core The construction speed of the horizontal structure inside the cylinder.

Description

A system for inverting and transporting steel beams inside a core tube under a climbing formwork and a construction method thereof

technical field

The invention relates to the technical field of large-scale material transportation and installation equipment for construction, in particular to a system for reverse transportation and installation of steel beams inside a core tube under a climbing formwork and a construction method thereof.

Background technique

The structural form of super high-rise buildings often adopts the form of "core tube + outer frame steel structure", and most of them use climbing formwork or construction platform system to construct the core tube shear wall structure first, and the core tube horizontal structure and the outer frame horizontal structure lag construction.

In order to meet the requirements of rapid construction of super high-rise horizontal structures, horizontal floor slabs are often designed as combined floor slabs. By using profiled steel plates and profiled steel beams as permanent formwork and supports, faster construction of horizontal structures can be achieved. In this mode, the outer frame structure is constructed. At the same time, steel beams and other large materials can be hoisted by the tower crane on the upper part of the core tube, but because the upper structure of the core tube adopts a fully enclosed climbing formwork or construction platform system, the tower crane hook cannot enter the core tube area below the climbing formwork through the climbing formwork. As a result, the tower crane cannot be used to transport materials to the working surface of the horizontal structure when the lower horizontal structure is used, and it is difficult to transport and install large materials such as horizontal floor steel beams in the core tube.

SUMMARY OF THE INVENTION

In order to achieve the above purpose of the invention, in view of the above technical problems, the present invention provides an installation system for backward transport of steel beams inside a core tube under a climbing formwork and a construction method thereof.

The technical scheme includes a hoisting and hoisting mechanism, a direction converting mechanism, a hoisting wire rope and a hook;

After the construction of the Nth floor of the outer frame structure of the core tube located under the climbing formwork is completed, the hoisting and hoisting mechanism is set on the outer frame floor of the outer frame structure of the core tube on the N-Mth floor. The hoisting and hoisting mechanism includes a square frame base and a mechanical The connection mode is fixedly arranged on the hoist on the base of the square frame.

The hoist selects the appropriate model according to the weight of the hoisting material required. The square frame base as the hoist base is welded with four 10# channel steels to form a square frame structure.

Each side of the square frame base is provided with two bolt holes, the square frame base is fixed on the outer frame floor of the core tube outer frame structure through expansion bolts, and a number of limit steel bars are arranged on the square frame base , the hoist is fixed inside the limit steel bar.

The type and number of expansion bolts should be determined in combination with the weight of the steel beam to ensure the stability of the winch. At the same time, limit steel bars are set at the four connection positions of the square frame base to further ensure the stability of the winch.

The direction conversion mechanism includes a primary diverting pulley, a secondary diverting pulley, a fixed steel beam, a pulley positioning wire rope and a rubber pad.

The fixed steel beam is arranged on the outer frame floor, the pulley positioning wire rope is fixed on the fixed steel beam through a buckle, a rubber pad is provided at the connection position of the pulley positioning wire rope and the fixed steel beam, and the The secondary steering pulley is arranged on the pulley positioning wire rope;

The primary diverting pulley is arranged on the outer frame floor.

The fixed steel beam is arranged on the outer frame floor of the Nth layer, and the pulley positioning wire rope is arranged at the height of the outer frame floor of the Nth layer;

The first-level diverting pulleys are arranged on the outer frame floors of the N-M layers.

During on-site construction, due to the convenience of lifting and hoisting of the outer frame structure of the core tube, the construction of the outer frame structure of the core tube can be arranged in advance of the construction of the horizontal structure of the inner frame of the core tube. Fixed steel beams and pulley positioning wire ropes are arranged on the upper 5 to 10 floors of the construction area required for the horizontal structure of the inner frame of the cylinder. At the same time, in order to reduce the friction between the pulley positioning wire rope and the fixed steel beam, rubber pads are arranged at the connection positions.

One end of the hoisting wire rope is connected to the hoist, and the other end is connected to the hook after passing through the primary diverting pulley and the secondary diverting pulley in sequence.

Install the first-level steering pulley at the position of the connecting beam connecting the outer frame floor with the hoisting mechanism and the core tube, and the first-level steering pulley guides the hoisting wire rope from the outer frame floor to the inside of the core cylinder; The secondary steering pulley completes the conversion of the vertical direction of the hoisting wire rope; the hoisting wire rope is drawn out from the secondary steering pulley and then connected to the hook to realize the hoisting construction of the lower section steel beam.

The function of the direction conversion mechanism is mainly to convert the hoisting wire rope from the horizontal to the vertical direction of the hoisting wire rope while entering the core tube from the outer frame structure floor of the core tube.

N-M is the floor to be constructed in the core tube inner floor, M is the floor height difference between the outer frame floor slab and the core tube inner floor slab, and the working surface of the outer frame floor slab is higher than the inner frame of the core tube.

Based on the construction method of the inverted transport installation system for the inner steel beam of the core tube under the climbing formwork, the following steps are included:

S1. After the construction of the Nth floor of the outer frame structure of the core tube is completed, use the tower crane to transfer large materials such as steel beams of the horizontal floor slabs in the core tube to the outer frame floor slabs of the N-M layers;

S2. Arrange the hoisting mechanism and the first-level steering pulley on the outer frame floor of the N-Mth floor;

S3. Arrange fixed steel beams and pulley positioning wire ropes on the outer frame floor of the Nth floor, and install secondary steering pulleys, hoisting wire ropes and hooks;

S4. Lower the hoisting wire rope to the position of the N-M layer, and transfer the steel beam from the position of the outer frame of the core tube on the N-M layer to the inner working surface of the core tube; in order to ensure the stability of the steel beam during the transfer and transportation process, it is necessary to arrange workers during the transfer and transportation process At the position of the N-M layer, use the wind rope to move the steel beam inward to keep it stable and slowly enter the core tube.

The beneficial effects brought by the technical solutions provided by the embodiments of the present invention are as follows: the purpose of the present invention is to develop a large-scale material transportation and installation system, such as steel beams, which is suitable for the area below the climbing form where the tower crane cannot enter the lower part of the climbing form. and its construction method. The device reasonably arranges the construction sequence of the outer frame of the core tube and the horizontal structure in the core tube, and at the same time arranges a hoisting and hoisting mechanism on the outer frame of the core tube, and introduces the lifting wire rope into the core tube through two pulley steering mechanisms. The system and method can realize the reverse transportation and installation of large-scale materials such as steel beams at the bottom of the climbing formwork under the condition that the super-high-rise core tube adopts a fully enclosed climbing formwork or a jacking platform system to construct the core tube shear wall first, thereby improving the interior of the core tube. The construction speed of the horizontal structure effectively solves the problems of low construction efficiency and slow construction speed of the traditional horizontal structure inside the core tube.

Description of drawings

FIG. 1 is a schematic structural diagram of a core tube and an outer frame structure of the core tube according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the overall structure of an embodiment of the present invention.

FIG. 3 is an enlarged view of part A of FIG. 2 .

FIG. 4 is an enlarged view of part B of FIG. 2 .

FIG. 5 is an enlarged view of part C of FIG. 2 .

Wherein, the reference signs are: 1, hoisting and hoisting mechanism; 2, direction conversion mechanism; 3, hoisting wire rope; 4, hook; 5, core tube; 6, outer frame structure of core tube; 7, outer frame floor; 8, Tower crane; 9. Climbing formwork; 101, hoist; 102, square frame base; 103, expansion bolt; 104, limit steel bar; 201, first-level steering pulley; 202, second-level steering pulley; 203, fixed steel beam; 204, Pulley positioning wire rope; 205, rubber pad.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "horizontal", "top", "bottom", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention The description is created and simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second", etc., may expressly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a connectable connection. Detachable connection, or integral connection; may be mechanical connection or electrical connection; may be direct connection, or indirect connection through an intermediate medium, or internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

Example 1

Referring to FIGS. 1 to 5 , the present invention provides a system for inverting and installing steel beams in a core tube under a climbing formwork and a construction method thereof, including a hoisting and hoisting mechanism 1 , a direction converting mechanism 2 , a hoisting wire rope 3 and a hook 4 ;

After the construction of the Nth floor of the core tube outer frame structure 6 under the climbing formwork 9 is completed, the hoisting and hoisting mechanism 1 is arranged on the outer frame floor 7 of the core tube outer frame structure 6 on the N-Mth floor, and the hoisting and hoisting mechanism 1 includes a square frame. The base 102 and the hoisting machine 101 fixed on the square frame base 102 by means of mechanical connection.

The hoist 101 selects an appropriate model according to the weight of the hoisting material required. The square frame base 102 as the hoist base is formed by welding four 10# channel steels in pairs to form a square frame structure.

Each side of the square frame base 102 is provided with two bolt holes, the square frame base 102 is fixed on the outer frame floor 7 of the core tube outer frame structure 6 through expansion bolts 103, and a number of limit steel bars are arranged on the square frame base 102 104 , the hoist 101 is fixed inside the limit steel bar 104 .

The type and quantity of the expansion bolts 103 need to be determined in combination with the weight of the steel beam to ensure the stability of the winch 101 .

The direction conversion mechanism 2 includes a primary diverting pulley 201 , a secondary diverting pulley 202 , a fixed steel beam 203 , a pulley positioning wire rope 204 and a rubber pad 205 .

The fixed steel beam 203 is set on the outer frame floor 7, the pulley positioning wire rope 204 is fixed on the fixed steel beam 203 by the buckle, the rubber pad 205 is set at the connection position of the pulley positioning wire rope 204 and the fixed steel beam 203, and the secondary steering pulley 202 is set on the pulley positioning wire rope 204;

The primary diverting pulley 201 is provided on the outer frame floor 7 .

The fixed steel beam 203 is arranged on the outer frame floor 7 of the Nth layer, and the pulley positioning wire rope 204 is arranged on the height of the outer frame floor 7 of the Nth layer;

The primary diverting pulley 201 is arranged on the outer frame floor 7 of the N-Mth floor.

During on-site construction, due to the convenience of lifting and hoisting construction of the outer frame structure 6 of the core tube, the construction of the outer frame structure 6 of the core tube can be arranged in advance of the construction of the horizontal structure of the inner frame of the core tube 5. , the fixed steel beam 203 and the pulley positioning wire rope 204 can be arranged on the upper 5 to 10 layers of the outer frame floor 7 in the required construction area of the inner frame horizontal structure of the core tube 5, and at the same time, in order to reduce the distance between the pulley positioning wire rope 204 and the fixed steel beam 203 For friction, rubber pads 205 are arranged at their connection locations.

One end of the hoisting wire rope 3 is connected to the hoist 101 , and the other end is connected to the hook 4 after passing through the primary diverting pulley 201 and the secondary diverting pulley 202 in sequence.

A first-level diverting pulley 201 is installed at the connecting beam position where the outer frame floor 7 of the hoisting and hoisting mechanism 1 is connected to the core tube 5, and the first-level diverting pulley 201 guides the hoisting wire rope 3 from the outer frame floor 7 to the core tube 5; The secondary diverting pulley 202 is installed in the middle of the pulley positioning wire rope 204, and the secondary diverting pulley 202 completes the conversion of the vertical direction of the hoisting wire rope 3; hoisting construction.

The function of the direction conversion mechanism 2 is mainly to convert the hoisting wire rope 3 from the horizontal to the vertical direction when the hoisting wire rope 3 needs to enter the core tube 5 from the floor slab of the outer frame structure 6 of the core tube.

N-M is the floor to be constructed in the core tube 5, M is the floor height difference between the outer frame floor 7 and the inner frame of the core tube 5, and the working surface of the outer frame floor 7 is higher than the inner frame of the core tube 5.

Based on the construction method of the inverted transport installation system for the inner steel beam of the core tube under the climbing formwork, the following steps are included:

S1. After the construction of the Nth floor of the outer frame structure 6 of the core tube is completed, the tower crane 8 is used to transfer large materials such as steel beams of the horizontal floor slab in the core tube 5 to the outer frame floor slab 7 of the N-Mth floor;

S2. Arrange the hoisting mechanism 1 and the first-level diverting pulley 201 on the outer frame floor 7 of the N-M layer;

S3. Arrange fixed steel beams 203 and pulley positioning wire ropes 204 on the Nth layer outer frame floor 7, and install secondary steering pulleys 202, hoisting wire ropes 3 and hooks 4;

S4. Lower the hoisting wire rope 3 to the position of the N-M layer, and transfer the steel beam from the position of the outer frame of the core tube 5 of the N-M layer to the inner working surface of the core tube 5; It is necessary to arrange workers to move the steel beam inward by using the wind rope at the position of the N-M layer, so that it can keep stable and slowly enter the core tube 5.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (8)

1. A system for reverse transporting and installing steel beams inside a core tube under a climbing formwork, characterized in that it comprises a hoisting and hoisting mechanism (1), a direction conversion mechanism (2), a hoisting wire rope (3) and a hook (4); After the construction of the Nth floor of the core tube outer frame structure (6) located under the climbing formwork (9) is completed, the hoisting mechanism (1) is arranged on the outer frame floor ( 7) On, the hoisting mechanism (1) includes a square frame base (102) and a hoist (101) fixed on the square frame base (102) by mechanical connection. 2. The installation system for reverse transportation of steel beams inside the core tube under the climbing formwork according to claim 1, characterized in that, each side of the square frame base (102) is provided with two bolt holes, and the square frame base (102) It is fixed on the outer frame floor (7) of the core tube outer frame structure (6) by means of expansion bolts (103), and the square frame base (102) is provided with a number of limit steel bars (104). (101) is fixed inside the limiting steel bar (104). 3. The installation system for reverse transportation of steel beams inside the core tube under the climbing formwork according to claim 1, wherein the direction conversion mechanism (2) comprises a primary steering pulley (201), a secondary steering pulley (202), Fix the steel beam (203), the pulley positioning wire rope (204) and the rubber pad (205). 4. The installation system for reverse transportation of steel beams inside the core tube under the climbing formwork according to claim 3, wherein the fixed steel beam (203) is arranged on the outer frame floor (7), and the pulley locates the wire rope (204) is fixed on the fixed steel beam (203) by snaps, a rubber pad (205) is provided at the connection position of the pulley positioning wire rope (204) and the fixed steel beam (203), and the secondary steering pulley (202) is arranged on the pulley positioning wire rope (204); The primary diverting pulley (201) is arranged on the outer frame floor (7). 5. The installation system for backward transporting and installing steel beams inside the core tube under the climbing formwork according to claim 4, wherein the fixed steel beams (203) are arranged on the outer frame floor (7) of the Nth floor, and the The pulley positioning wire rope (204) is arranged at the height of the outer frame floor (7) of the Nth layer; The first-level diverting pulley (201) is arranged on the outer frame floor (7) of the N-Mth floor. 6. The installation system for reverse transportation of steel beams inside the core tube under the climbing formwork according to claim 3, characterized in that, one end of the hoisting wire rope (3) is connected to the hoist (101), and the other end passes through a first-level diverting pulley ( 201) and the secondary diverting pulley (202) are connected to the hook (4). 7. The installation system for backward transportation and installation of steel beams inside the core tube under the climbing formwork according to claim 1, characterized in that, N-M is the required construction layer of the inner floor slab of the core tube (5), and M is the outer frame floor slab (7) and the core The floor height difference of the inner floor of the tube (5), the working surface of the outer frame floor (7) of the Nth floor is higher than the inner frame floor of the core tube (5), the outer frame floor of the N-M layer (7) and the inner frame of the core tube (5) The lowest floor slab to be constructed is on the same level. 8. based on the construction method of the lower core tube inner steel beam installation system of climbing formwork according to claim 1, is characterized in that, comprises the following steps: S1. After the construction of the Nth floor of the outer frame structure of the core tube (6) is completed, use the tower crane (8) to transfer large materials such as steel beams of the horizontal floor slabs in the core tube (5) to the outer frame floor slabs (7) of the N-M layers; S2. Arrange the hoisting mechanism (1) and the first-level diverting pulley (201) on the outer frame floor (7) of the N-M layers; S3. Arrange fixed steel beams (203) and pulley positioning wire ropes (204) on the Nth layer outer frame floor slab (7), and install secondary steering pulleys (202), hoisting wire ropes (3) and hooks (4); S4. Lower the hoisting wire rope (3) to the position of the N-M layer, and transfer the steel beam from the outer frame position of the core tube (5) of the N-M layer to the inner working surface of the core tube (5); in order to ensure the stability of the steel beam during the transfer and transportation process , During the transfer process, it is necessary to arrange workers to use the wind rope to move the steel beam inward at the position of the N-M layer to keep it stable and slowly enter the core tube (5).

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