Steel pipe column ring beam steel bar construction method

Abstract

The invention provides a steel pipe column ring beam steel bar construction method, which comprises the following steps of: hoisting ring beam steel bars under the working condition of hoisting construction from top to bottom, pre-placing prefabricated ring beam steel bars at the top of a constructed steel pipe column under the working condition of not meeting the hoisting construction from top to bottom, and then, after a new steel pipe column is mounted, pre-placing the prefabricated ring beam steel bars at the top of the constructed steel pipe column. And the preset ring beam reinforcing steel bar is lifted to the mounting position, the problem that the prefabricated ring beam reinforcing steel bar cannot be hoisted from top to bottom is solved, meanwhile, field binding is not needed, and the problem that the construction period is greatly prolonged is avoided. According to the construction method, the construction convenience and the construction efficiency are remarkably improved, the requirement for the working face is lowered, the construction problem of the ring beam steel bars at the special structure is solved under the condition that construction facilities are not increased, all the ring beam steel bars are integrally installed under the special working condition, the construction operation is simplified, and the construction cost is reduced. And the mounting efficiency and the construction quality are improved.

Description

Technical Field

[0001] The invention relates to the field of building construction, to beam-column node construction, and in particular to a steel pipe column ring beam reinforcement construction method. Background Art

[0002] Steel pipe columns have been widely used in high-rise building design due to their excellent bearing capacity, outstanding fire and earthquake resistance, and simple construction technology. However, since steel pipe columns affect the passage of the longitudinal steel bars of reinforced concrete beams, there are certain anchoring difficulties at the beam-column joints here. The anchoring problem is solved by setting ring beam steel bars on the steel pipe columns. The ring beam steel bars can effectively disperse and transfer the bending moment to the entire building structure, and the steel shear hoop precisely welded to the outer wall of the steel pipe can also cope with and transfer the shear force generated by the beam end, ensuring the stability and safety of the structure.

[0003] However, the construction operation of the ring beam reinforcement has certain defects, which will seriously affect the construction progress. The most conventional construction method of the ring beam reinforcement is to directly bind and fix it on site on the installed steel pipe column. This construction method can cope with all working conditions and has the advantages of strong adaptability, but it also has the disadvantages of large workload, low construction efficiency and long construction period. Therefore, a construction method of prefabricating the ring beam reinforcement and then hoisting it as a whole has emerged, which solves the technical difficulties of on-site binding of the ring beam reinforcement. However, the applicability of the construction method of hoisting the prefabricated ring beam reinforcement as a whole is poor, and it is only applicable to steel pipe columns with one layer and one column, and there must be no obstacles on the steel pipe column, otherwise the ring beam reinforcement cannot pass through the steel pipe column. Most of the current building structures adopt special structures, which makes the construction method of hoisting the prefabricated ring beam reinforcement as a whole unable to be applied, and the on-site binding is too time-consuming and labor-intensive, and does not meet the construction progress requirements. The present invention provides a steel pipe column ring beam reinforcement construction method to solve the above problems. Summary of the invention

[0004] The invention provides a steel pipe column ring beam reinforcement construction method, which solves the installation and construction problem of the ring beam reinforcement on the steel pipe column under a special building structure.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A steel pipe column ring beam reinforcement construction method comprises the following steps: S1, prefabrication of ring beam reinforcement: prefabrication of ring beam reinforcement and transportation to the construction site for placement; S2, installing the first steel pipe column: installing the first steel pipe column, erecting the support frame and installing the formwork, and then hoisting and tying the ring beam reinforcement from above; S3, lower floor pouring: perform concrete pouring construction of the lower floor; S4, installing the second steel pipe column: after the construction of the lower floor is completed, the ring beam reinforcement is pre-placed on the top of the first steel pipe column, and then the second steel pipe column is installed on the first steel pipe column; S5, lifting the middle ring beam reinforcement: lifting the ring beam reinforcement at the top of the first steel pipe column to the position on the second steel pipe column located at the middle floor, and setting up the middle floor support frame and installing the formwork, and fixing the lifted ring beam reinforcement; S6, hoisting the upper ring beam reinforcement: after the construction of the middle floor is completed, the upper floor buckle support frame and the formwork are installed on the upper part of the second steel pipe column, and then the upper ring beam reinforcement is hoisted and tied from above; S7, upper floor pouring: carry out concrete pouring construction of the upper floors.

[0006] Furthermore, in step S5, when the middle ring beam reinforcement is lifted to the position on the second steel pipe column located at the middle floor, it is fixed by a fixing frame.

[0007] Furthermore, in step S5, the specific operation of lifting the steel bars of the middle ring beam is: S51, installing a lifting device on the top of the second steel pipe column, and connecting the lifting device to the ring beam reinforcement pre-placed on the top of the first steel pipe column; S52, lifting the ring beam reinforcement upward along the second steel pipe column by a lifting device to a position on the second steel pipe column located at a middle floor, and keeping it stable; S53, passing the fixing frame through the ring beam reinforcement and welding it to the corresponding position of the second steel pipe column, and connecting the fixing frame to the ring beam reinforcement; S54, after the fixed frame is firmly connected to the ring beam reinforcement, the connection between the lifting device and the ring beam reinforcement is released, and the lifting device is removed.

[0008] Furthermore, in step S53, the middle floor support frame is first erected and the formwork is installed, and a fixed operation space for the ring beam reinforcement is reserved. After the fixed frame is installed and the ring beam reinforcement is fixed, the remaining support frames and formwork are constructed.

[0009] Furthermore, in step S5, when the ring beam reinforcement is lifted from bottom to top, a guide buffer strip is provided between the ring beam reinforcement and the second steel pipe column.

[0010] Furthermore, the fixing frame includes unit hangers, which are arranged at intervals on the second steel pipe column and located at the position of the middle floor.

[0011] Furthermore, the first steel pipe column is one column per layer, the second steel pipe column is one column per two layers, and the middle part of the second steel pipe column passes through the middle floor.

[0012] Furthermore, the unit hanger is an L-shaped hanger, which is welded to the second steel pipe column.

[0013] The beneficial effects of the present invention are as follows: When the construction conditions of hoisting from top to bottom are met, the ring beam reinforcement is hoisted. When the construction conditions of hoisting from top to bottom are not met, the prefabricated ring beam reinforcement is pre-placed on the top of the constructed steel pipe column. Then, after the new steel pipe column is installed, the pre-placed ring beam reinforcement is lifted to the installation position, which solves the problem that the prefabricated ring beam reinforcement cannot be hoisted from top to bottom. There is also no need for on-site binding, which avoids the problem of a significant increase in construction period. The construction method adopted by the present invention significantly improves the construction convenience and construction efficiency, and reduces the demand for working surfaces. It solves the construction problem of ring beam reinforcement at special structures without adding construction facilities, realizes the overall installation of ring beam reinforcement under special working conditions, simplifies construction operations, and improves installation efficiency and construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the construction steps of the middle ring beam reinforcement of the present invention; Figure 2 It is a schematic diagram of the construction steps of the ring beam reinforcement on the first steel pipe column of the present invention; Figure 3 This is a structural schematic diagram of the middle ring beam reinforcement of the present invention in a completed state of construction; Figure 4 It is a schematic diagram of the connection between the fixing frame and the ring beam reinforcement of the present invention.

[0015] Figure numerals: 1, ring beam reinforcement; 2, first steel pipe column; 3, second steel pipe column; 4, fixing frame; 41, unit hanger; 5, lifting device; 6, support frame; 7, formwork. DETAILED DESCRIPTION

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings of the specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0018] In the specific embodiment of the present invention, the floor heights are 3.9 / 3.6 / 4.2 / 4.6 / 4.8 / 5 / 7 / 7.2m respectively, the size of the ring beam reinforcement b×h ranges from 300mm×850mm to 800mm×1350mm, and the heaviest is about 1.5 tons. First, the steel pipe column adopts one column per layer, one column per two layers, or one column per multiple layers. The common working conditions applied in this embodiment, that is, the common node of one column per layer and the situation where there is no obstacle to the steel pipe column, can directly realize the hoisting of the ring beam reinforcement 1. For steel pipe columns that use two layers and one column or multiple layers and one column, the corresponding positions of the steel pipe columns need to be constructed on the floors, and there are obstacles on the steel pipe columns, such as the presence of a corbel structure at the top of the steel pipe column or the transition of the top steel pipe cylinder to the steel pipe square column, which is the special steel pipe column node working condition used in this embodiment. Under special working conditions, the prefabricated ring beam reinforcement 1 cannot be hoisted from the top of the steel pipe column from top to bottom, and thus the ring beam reinforcement 1 located in the middle of the steel pipe column cannot be hoisted as a whole. The conventional construction method under special working conditions is to perform on-site binding of the ring beam reinforcement 1 that cannot be hoisted as a whole. The on-site binding construction will seriously delay the construction progress. Not only does it need to set up a construction platform, but the progress of on-site binding is slow, and the risk is relatively large, which has a greater impact on the construction quality and construction progress. The present invention provides a construction method for the ring beam reinforcement 1 of a steel pipe column, which realizes the overall installation of the ring beam reinforcement for special working conditions and ordinary working conditions, and ensures the construction progress and construction quality; the construction method of the present invention specifically includes the following steps.

[0019] like Figure 1 , 2 As shown in , S1, prefabricate the ring beam reinforcement 1: prefabricate the ring beam reinforcement 1, prefabricate the corresponding ring beam reinforcement 1 according to the node structure, and transport the ring beam reinforcement 1 to the construction location for placement.

[0020] S2, install the first steel pipe column 2: install the first steel pipe column 2 on the constructed floor, install the first steel pipe column 2 on the constructed steel pipe column, then erect the support frame 6 and install the formwork 7, and then use the tower crane to hoist and tie the ring beam reinforcement 1 from top to bottom.

[0021] S3, lower floor pouring: carry out concrete pouring construction of the lower floor.

[0022] S4, install the second steel pipe column 3: after the construction of the lower floor is completed, pre-place the ring beam reinforcement 1 on the top of the first steel pipe column 2, and put the ring beam reinforcement 1 on the top of the first steel pipe column 2 without affecting the installation of the second steel pipe column 3, and ensure that the ring beam reinforcement 1 can be smoothly lifted from bottom to top, and then install the second steel pipe column 3 on the first steel pipe column 2.

[0023] S5, lifting the middle ring beam reinforcement 1: lift the ring beam reinforcement 1 on the top of the first steel pipe column 2 to the position on the second steel pipe column 3 on the middle floor, and set up the middle floor support frame 6 and install the formwork 7, and fix the ring beam reinforcement 1 lifted into place.

[0024] When the ring beam reinforcement 1 is lifted, since the ring beam reinforcement 1 is lifted from bottom to top, there is no support of the support frame 6 and the template 7 below the ring beam reinforcement 1, resulting in the ring beam reinforcement 1 being unable to be stably fixed on the second steel pipe column 3 after being lifted into place. Therefore, the ring beam reinforcement 1 needs to be fixed after being lifted into place. In this embodiment, the fixing frame 4 is used to fix the ring beam reinforcement 1. Therefore, in step S5, the specific operation of lifting the middle ring beam reinforcement 1 is as follows: S51, installing a lifting device 5 on the top of the second steel pipe column 3, and connecting the lifting device 5 to the ring beam reinforcement 1 pre-placed on the top of the first steel pipe column 2; S52, lifting the ring beam reinforcement 1 upward along the second steel pipe column 3 by the lifting device 5, lifting it to a position on the second steel pipe column 3 located at the middle floor, and keeping it stable; S53, passing the fixing frame 4 through the ring beam reinforcement 1 and welding it to the corresponding position of the second steel pipe column 3, and connecting the fixing frame 4 to the ring beam reinforcement 1; S54, after the fixing frame 4 is firmly connected to the ring beam reinforcement 1, the connection between the lifting device 5 and the ring beam reinforcement 1 is released, and the lifting device 5 is removed.

[0025] Since the fixing frame 4 is also located in the middle of the second steel pipe column 3, there is a lack of working surface during installation, and high-altitude operations are required. After the ring beam reinforcement 1 is fixed, the support frame 6 and the formwork 7 need to be erected. Therefore, the support frame 6 and the formwork 7 are used as the working surface to install the fixing frame 4 and perform construction operations after the ring beam reinforcement 1 is lifted. The specific operation in step S53 is: first, the middle floor support frame 6 is erected and the formwork 7 is installed, and a fixed operation space for the ring beam reinforcement 1 is reserved, which not only realizes the installation and construction of the fixing frame 4, but also does not affect the subsequent operation of the ring beam reinforcement 1. After the fixing frame 4 is installed and the ring beam reinforcement 1 is fixed, the support frames 6 and formworks 7 at the remaining positions are constructed to form a complete formwork support structure.

[0026] S6, hoisting the upper ring beam reinforcement 1: after the construction of the middle floor is completed, the upper floor buckle support frame 6 and the template 7 are set up on the upper part of the second steel pipe column 3, and then the upper ring beam reinforcement 1 is hoisted and tied from above. There are obstacles on the top of the second steel pipe column 3. When prefabricating the upper ring beam reinforcement 1, it is prefabricated according to the top structure of the second steel pipe column 3 to match each other, and then the hoisting construction of the upper ring beam reinforcement 1 can be carried out from top to bottom.

[0027] S7, upper floor pouring: carry out concrete pouring construction of the upper floors.

[0028] Furthermore, in step S5 , when the middle ring beam reinforcement 1 is lifted to the position on the second steel pipe column 3 at the middle floor, it is fixed by the fixing frame 4 .

[0029] like Figure 4 As shown, further, the fixing frame 4 includes unit hangers 41, and the unit hangers 41 are arranged at intervals on the second steel pipe column 3 and are located at the position of the middle floor.

[0030] Preferably, the unit hanger 41 is an L-shaped rod or plate, which is welded to the second steel pipe column 3. The length of the hanging end of the unit hanger 41 is 500 mm, and the length of the welding end is 800 mm. It is evenly spaced on the outer wall of the second steel pipe column 3, and a total of 8 units are set to fix the middle ring beam steel bar 1 so that the middle ring beam steel bar 1 can be stably placed on the middle floor of the second steel pipe column 3.

[0031] Furthermore, in step S5, when the ring beam reinforcement 1 is lifted from bottom to top, a guide buffer strip is provided between the ring beam reinforcement 1 and the second steel pipe column 3. The guide buffer strip is provided to guide the lifting operation of the ring beam reinforcement 1, and at the same time, plays the role of isolation and buffering, so as to avoid collision between the ring beam reinforcement 1 and the second steel pipe column 3.

[0032] Furthermore, the first steel pipe column 2 has one column per layer, the second steel pipe column 3 has one column per two layers, and the middle part of the second steel pipe column 3 passes through the middle floor.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any reference numerals in the claims should not be regarded as limiting the claims involved.

Claims

1. A steel pipe column ring beam reinforcement construction method, characterized in that: The following steps are involved: S1, prefabricate the ring beam reinforcement (1): prefabricate the ring beam reinforcement (1) and transport it to the construction site for placement; S2, installing the first steel pipe column (2): installing the first steel pipe column (2), erecting the support frame (6) and installing the formwork (7), and then hoisting and tying the ring beam reinforcement (1) from above; S3, lower floor pouring: perform concrete pouring construction of the lower floor; S4, installing the second steel pipe column (3): after the construction of the lower floor is completed, the ring beam reinforcement (1) is pre-placed on the top of the first steel pipe column (2), and then the second steel pipe column (3) is installed on the first steel pipe column (2); S5, lifting the middle ring beam reinforcement (1): lifting the ring beam reinforcement (1) on the top of the first steel pipe column (2) to a position on the second steel pipe column (3) located on the middle floor, erecting the middle floor support frame (6) and installing the formwork (7), and fixing the lifted ring beam reinforcement (1); S6, hoisting the upper ring beam reinforcement (1): after the construction of the middle floor is completed, the upper floor buckle support frame (6) and the formwork (7) are erected on the upper part of the second steel pipe column (3), and then the upper ring beam reinforcement (1) is hoisted and tied from above; S7, upper floor pouring: carry out concrete pouring construction of the upper floors.

2. A steel pipe column ring beam reinforcement construction method according to claim 1, characterized in that: In step S5, when the middle ring beam reinforcement (1) is lifted to a position on the second steel pipe column (3) located at the middle floor, it is fixed by a fixing frame (4).

3. A steel pipe column ring beam reinforcement construction method according to claim 2, characterized in that: In step S5, the specific operation of lifting the middle ring beam reinforcement (1) is: S51, installing a lifting device (5) on the top of the second steel pipe column (3), and connecting the lifting device (5) to the ring beam reinforcement (1) pre-placed on the top of the first steel pipe column (2); S52, lifting the ring beam reinforcement (1) upwards along the second steel pipe column (3) by means of a lifting device (5), lifting it to a position on the second steel pipe column (3) located at a middle floor, and keeping it stable; S53, passing the fixing frame (4) through the ring beam reinforcement (1) and welding it to the corresponding position of the second steel pipe column (3), and connecting the fixing frame (4) to the ring beam reinforcement (1); S54, after the fixing frame (4) and the ring beam reinforcement (1) are firmly connected, the connection between the lifting device (5) and the ring beam reinforcement (1) is released, and the lifting device (5) is removed.

4. A steel pipe column ring beam reinforcement construction method according to claim 3, characterized in that: In step S53, the middle floor support frame (6) is first erected and the formwork (7) is installed, and a fixed operation space for the ring beam reinforcement (1) is reserved. After the fixed frame (4) is installed and the ring beam reinforcement (1) is fixed, the remaining support frames (6) and formwork (7) are constructed.

5. A steel pipe column ring beam reinforcement construction method according to claim 2, characterized in that: In step S5, when the ring beam reinforcement (1) is lifted from bottom to top, a guide buffer strip is provided between the ring beam reinforcement (1) and the second steel pipe column (3).

6. A steel pipe column ring beam reinforcement construction method according to claim 2, characterized in that: The fixing frame (4) comprises a unit hanger (41), and the unit hangers (41) are arranged at intervals on the second steel pipe column (3) and are located at the position of the middle floor.

7. A steel pipe column ring beam reinforcement construction method according to claim 2, characterized in that: The first steel tube column (2) has one column per floor, the second steel tube column (3) has one column per two floors, and the middle portion of the second steel tube column (3) passes through the middle floor.

8. A steel pipe column ring beam reinforcement construction method according to claim 6, characterized in that: The unit hanger (41) is an L-shaped hanger, which is welded to the second steel pipe column (3).

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