Auxiliary installation structure of stiff column in cover-excavation sequential construction method

Abstract

The utility model discloses an auxiliary installation structure of a stiff column in a cover and excavation sequential construction method. The auxiliary installation structure comprises an overground steel column, an upper pre-buried stiff column, a pre-buried lifting hook and an inhaul cable. The lower end of the overground steel column is embedded in the outdoor ground; the upper part of the upper pre-embedded stiff column is pre-embedded in a frame beam of a basement structure, and the top end of the upper pre-embedded stiff column positioned on the first layer of the basement is in butt joint with the lower end of the overground steel column; the pre-embedded lifting hook is pre-embedded in the frame beam and extends into the upper pre-embedded stiff column below the frame beam; one end of the inhaul cable is connected with the top of the stiff column, and the other end of the inhaul cable penetrates through the pre-buried lifting hook and is pulled by a constructor, so that the top of the stiff column is connected with the bottom of the upper pre-buried stiff column, and the bottom of the stiff column is in butt joint with the top of the upper pre-buried stiff column on the lower layer. The utility model relates to the technical field of building construction and can solve the problem that in the prior art, a support needs to be erected for installing a stiff column.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an auxiliary installation structure of a rigid column in a cover-and-dig method. Background Art

[0002] In the construction of rigid columns in the cover-and-dig method, the basement roof is constructed first, which makes the subsequent installation of the lower rigid columns difficult. The traditional method of rigid columns is to first hang the rigid columns from the construction hole to the basement, then use a forklift to move the rigid columns to the designated position where the rigid columns need to be installed, and then set up brackets to assist in manual installation. The traditional method of rigid columns requires the setting up of brackets, which has a long construction period, consumes manpower and working hours, and has high costs. Therefore, it is necessary to provide an auxiliary installation structure for rigid columns in the cover-and-dig method, which can solve the problem of the need to set up brackets for the installation of rigid columns in the prior art. Summary of the invention

[0003] The utility model aims to provide an auxiliary installation structure for a rigid column in a cover-and-dig method, which can solve the problem in the prior art that a bracket needs to be set up for the installation of the rigid column.

[0004] The utility model is achieved in this way:

[0005] The invention discloses an auxiliary installation structure for a rigid column in a cover-and-cut method, comprising an above-ground steel column, an upper pre-embedded rigid column, a pre-embedded hook and a cable; the above-ground steel column is constructed on the outdoor ground, and the lower end of the above-ground steel column is buried in the outdoor ground; the upper part of the upper pre-embedded rigid column is pre-embedded in the frame beam of the basement structure, the top end of the upper pre-embedded rigid column located on the first floor of the basement is butted against the lower end of the above-ground steel column, and the lower part of the upper pre-embedded rigid column extends into the basement structure; the upper end of the pre-embedded hook is pre-embedded in the frame beam, and the lower end of the pre-embedded hook extends to the bottom of the frame beam and is located in the upper pre-embedded rigid column; one end of the cable is connected to the top of the rigid column to be installed, and the other end of the cable passes through the pre-embedded hook and is pulled by the construction personnel, so that the top of the rigid column is connected to the bottom of the upper pre-embedded rigid column, and the bottom of the rigid column is butted against the top of the upper pre-embedded rigid column of the next floor.

[0006] A rigid column fixing base is pre-embedded on the top of the upper pre-embedded rigid column of the next layer, and the bottom of the rigid column is connected and fixed to the rigid column fixing base.

[0007] The outer part of the upper pre-buried rigid column located in the underground first floor is provided with an external short column, which is pre-buried in the outdoor ground and frame beams and extends to the lower part of the above-ground steel column, so that the above-ground steel column and the upper pre-buried rigid column are connected into an integrated structure through the external short column.

[0008] The embedded hook is in an inverted "J" shape. The top two ends of the embedded hook are embedded in the concrete of the frame beam and overlapped with the beam reinforcement of the frame beam. The bottom of the embedded hook forms an annular structure for the cable to pass through below the bottom surface of the frame beam.

[0009] The embedding length of the top two ends of the embedded hook in the frame beam of the first floor of the basement is not less than 35 times of the diameter.

[0010] The rigid column comprises a steel column and column reinforcement, the column reinforcement is circumferentially arranged on the outside of the steel column and connected to the steel column, and concrete is poured to wrap the steel column and the column reinforcement to form a rigid column.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model is provided with a pre-buried hook and a cable, one end of the cable is connected to the rigid column, and the other end of the cable passes through the pre-buried hook embedded in the bottom of the frame beam and is pulled and controlled by the construction personnel, so as to facilitate pulling the rigid column to the installation position. The cable and the pre-buried hook can be used in conjunction with the pulley, which is convenient and labor-saving to operate, and there is no need to set up and dismantle the bracket. While ensuring safe construction, it greatly saves manpower, working hours and costs, and can shorten the construction period.

[0013] 2. The utility model is provided with an upper pre-embedded rigid column and a rigid column fixing base. The upper pre-embedded rigid column embedded in the frame beam is used to fix the upper end of the rigid column, and the rigid column fixing base arranged on the top of the upper pre-embedded rigid column of the next layer is used to fix the lower end of the rigid column. The rigid columns of each layer can be connected into a whole to ensure the vertical bearing capacity of the building structure.

[0014] 3. The utility model is provided with above-ground steel columns and external short columns. The above-ground steel columns are constructed on the outdoor ground and are connected to the upper pre-buried rigid columns of the underground layer through the external short columns to form a whole, thereby ensuring the structural integrity and vertical bearing capacity of the underground above-ground structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an elevation view of the auxiliary installation structure of the rigid column in the cover-excavation method of the utility model;

[0016] Figure 2 It is a schematic diagram of the construction process of the auxiliary installation structure of the rigid column in the cover-and-dig method of the utility model;

[0017] Figure 3 It is a schematic diagram of the completion of the construction of the auxiliary installation structure of the rigid column in the cover-and-dig method of the utility model;

[0018] Figure 4 It is a schematic diagram of pre-embedded hooks in the auxiliary installation structure of the rigid column in the cover-and-dig method of the utility model;

[0019] Figure 5 It is a schematic cross-sectional view of a rigid column in an auxiliary installation structure of a rigid column in a cover-and-dig method of the utility model.

[0020] In the figure, 1 is the ground steel column, 2 is the upper embedded rigid column, 3 is the embedded hook, 4 is the cable, 5 is the frame beam, 501 is the beam steel bar, 6 is the outdoor ground, 7 is the rigid column, 701 is the steel column, 702 is the column reinforcement, 703 is the concrete, 8 is the external short column, and 9 is the rigid column fixed base. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] The cover-and-cut method is a method of underground structure construction, which is particularly suitable for building underground stations or tunnels on roads where road traffic cannot be interrupted for a long time. The construction process is roughly as follows:

[0023] Step 1: Complete the retaining wall structure on the ground.

[0024] Step 2: Lay prefabricated standard cover plates on the retaining structure to form a temporary road surface.

[0025] Step 3: Excavate the earth below the cover plate and install the supporting structure.

[0026] Step 4: Build the main part of the underground structure from bottom to top according to the normal construction sequence of above-ground buildings, including the base plate, side walls, columns and floor slabs.

[0027] Step 5: After completing the main structure of the basement, carry out waterproofing, then backfill the soil, and restore the road surface or bury new pipelines.

[0028] Step 6: Remove the exposed part of the retaining structure as needed and restore road traffic.

[0029] Please see attached Figure 1 To Attachment Figure 3, an auxiliary installation structure of a rigid column in a cover-excavation method, comprising an above-ground steel column 1, an upper pre-buried rigid column 2, a pre-buried hook 3 and a cable 4; the above-ground steel column 1 is constructed on an outdoor ground 6, and the lower end of the above-ground steel column 1 is buried in the outdoor ground 6; the upper part of the upper pre-buried rigid column 2 is pre-buried in a frame beam 5 of a basement structure, the top of the upper pre-buried rigid column 2 located on the first floor of the basement is butted against the lower end of the above-ground steel column 1, and the lower part of the upper pre-buried rigid column 2 extends into the basement structure; the upper end of the pre-buried hook 3 is pre-buried in the frame beam 5, and the lower end of the pre-buried hook 3 extends to the bottom of the frame beam 5 and is located in the upper pre-buried rigid column 2; one end of the cable 4 is connected to the top of a rigid column 7 to be installed, and the other end of the cable 4 passes through the pre-buried hook 3 and is pulled by a construction worker, so that the top of the rigid column 7 is connected to the bottom of the upper pre-buried rigid column 2, and the bottom of the rigid column 7 is butted against the top of the upper pre-buried rigid column 2 of the next floor.

[0030] In step 1 and step 2 of the cover-and-excavation method, the construction of the outdoor ground 6 is completed simultaneously, and the ground steel columns 1 are pre-buried during the construction of the outdoor ground 6. The ground steel columns 1 serve as vertical load-bearing components of the above-ground main structure.

[0031] In step 4 of the cover-excavation method, the top plate of the basement structure is constructed before the rigid columns 7. When the top plate of each basement structure is constructed, the upper pre-embedded rigid columns 2 and pre-embedded hooks 3 are pre-embedded in the frame beams 5 to facilitate the subsequent installation of the rigid columns 7 during the cover-excavation method. The upper pre-embedded rigid columns 2 embedded in the frame beams 5 of the underground structure are butted against the lower ends of the above-ground steel columns 1, so that the underground and above-ground steel columns are butted against each other to form a whole, ensuring the bearing capacity of the building structure.

[0032] Since a rigid column 7 needs to be installed between the upper pre-embedded rigid column 2 and the bottom plate of the basement structure, the rigid column 7 is pulled by the cable 4, and the pre-embedded hook 3 and the cable 4 can be used in conjunction with the fixed pulley to facilitate the pulling and position adjustment of the rigid column 7, so that the rigid column 7 is moved to the installation position, thereby facilitating the connection between the rigid column 7 and the upper pre-embedded rigid column 2, so that the upper pre-embedded rigid columns 2 and the rigid columns 7 of each layer and the ground steel column 1 form an integral load-bearing column structure for bearing vertical loads.

[0033] Please see attached Figure 1 To Attachment Figure 3 The top of the upper pre-embedded rigid column 2 of the next layer is pre-embedded with a rigid column fixing base 9, and the bottom of the rigid column 7 is connected and fixed to the rigid column fixing base 9.

[0034] The rigid column fixing base 9 is embedded and fixed on the bottom plate of the basement structure. The setting of the rigid column fixing base 9 facilitates the connection and fixation of the bottom of the rigid column 7 with the top of the upper embedded rigid column 2 of the next layer, and the positioning and connection are more convenient, so that the rigid columns 7 of each layer can be connected in sequence through the upper embedded rigid column 2 and the rigid column fixing base 9 to form a whole.

[0035] Please see attached Figure 1 To Attachment Figure 3 The outer part of the upper pre-buried rigid column 2 located in the underground first floor is provided with an external short column 8, which is pre-buried in the outdoor ground 6 and the frame beam 5 and extends to the lower part of the above-ground steel column 1, so that the above-ground steel column 1 and the upper pre-buried rigid column 2 are connected into an integrated structure through the external short column 8.

[0036] Preferably, the upper pre-embedded rigid column 2, the ground steel column 1, and the rigid column 7 can be rigid columns of the same specifications. The upper pre-embedded rigid column 2 can be integrally cast with the frame beam 5, the top plate, etc. of the basement structure to ensure the embedding reliability of the upper pre-embedded rigid column 2.

[0037] Preferably, the outer short column 8 can be a steel column slightly larger than the upper pre-embedded rigid column 2 and the above-ground steel column 1 to ensure the connection reliability and integrity between the upper pre-embedded rigid column 2 and the above-ground steel column 1.

[0038] Please see attached Figure 4 The embedded hook 3 is in an inverted "J" shape. The top two ends of the embedded hook 3 are embedded in the concrete of the frame beam 5 and overlap the beam reinforcement 501 of the frame beam 5. The bottom of the embedded hook 3 forms an annular structure for the cable 4 to pass through below the bottom surface of the frame beam 5.

[0039] The embedded hook 3 is embedded during the reinforcement construction of the frame beam 5, and is embedded and fixed in the frame beam 5 during the concrete pouring construction of the frame beam 5, ensuring that the embedded hook 3 has reliable load-bearing performance, facilitating the pulling control of the rigid column 7, and ensuring construction safety.

[0040] Preferably, an operation hole may be reserved at the lower part of the upper pre-embedded rigid column 2 to facilitate the pulling operation of the cable 4 .

[0041] Please see attached Figure 4 The embedded length of the top two ends of the embedded hook 3 in the frame beam 5 of the basement layer is not less than 35 times of the diameter, ensuring the embedded reliability of the embedded hook 3.

[0042] Preferably, the embedded hook 3 can be made by bending round steel with a diameter of 20 mm.

[0043] Please see attached Figure 5The rigid column 7 includes a steel column 701 and a column reinforcement 702 . The column reinforcement 702 is circumferentially arranged on the outside of the steel column 701 and connected to the steel column 701 . Concrete 703 is poured to wrap the steel column 701 and the column reinforcement 702 to form the rigid column 7 .

[0044] The rigid column 7 may adopt a conventional square column structure, and the construction of the column reinforcement 702 and the pouring of the concrete 703 may be carried out according to the load requirements.

[0045] In order to avoid damage to the finished concrete 703 during construction, the steel column 701 of the rigid column 7 is usually installed by pulling, then tying and welding the column reinforcement 702, and finally pouring the concrete 703 on site. The finished rigid column 7 can also be directly hoisted according to actual construction needs.

[0046] Please see attached Figure 1 To Attachment Figure 5 The construction method of the utility model in the cover-excavation method is:

[0047] The conventional cover-and-dig construction method is adopted, and the specific construction process is not described here. In step 1 and step 2 of the cover-and-dig construction method, the construction of the outdoor ground 6 is completed simultaneously, and the ground steel column 1 is pre-buried during the construction of the outdoor ground 6.

[0048] In step 4 of the cover-and-excavation method, when each basement structure is constructed, the upper pre-buried rigid column 2 and the pre-buried hook 3 are pre-buried in the frame beam 5. At the same time, when the underground structure is constructed, the outer short column 8 is pre-buried synchronously to connect the upper pre-buried rigid column 2 and the ground steel column 1.

[0049] After the steel column 701 of the rigid column 7 is hoisted to the basement, the steel column 701 is moved to the side of the installation position by a forklift. When the steel column 701 is processed, a connection hole for the cable 4 is reserved at the top. One end of the cable 4 is connected to the connection hole at the top of the steel column 701, and the other end of the cable 4 passes through the annular structure of the embedded hook 3 and is pulled by the construction personnel.

[0050] The construction workers stand on the bottom plate of the basement structure, and the construction workers and the steel column 701 are located on both sides of the embedded hook 3, so that the steel column 701 can be pulled to between the bottom of the upper embedded rigid column 2 and the rigid column fixed base 9 exposed from the bottom plate by a pull cable to complete the positioning of the steel column 701.

[0051] The steel column 701 is fixedly connected to the steel column of the upper pre-embedded rigid column 2 and the rigid column fixing base 9 by welding to complete the installation of the steel column 701. The cable 4 is removed through the operation hole, and the pre-embedded hook 3 can be left in the upper pre-embedded rigid column 2 without being removed.

[0052] After the steel column 701 is installed, the column reinforcement 702 is constructed, and concrete 703 is poured to form a rigid column 7. The column reinforcement 702 construction and concrete 703 pouring of the rigid column 7 are carried out using conventional processes, which will not be described in detail here.

[0053] The rigid columns 7 of the basement structures of each floor are installed in sequence in the same manner, which will not be described in detail here.

[0054] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An auxiliary installation structure for a rigid column in a cover-and-dig method, characterized by: The invention comprises an above-ground steel column (1), an upper pre-buried rigid column (2), a pre-buried hook (3) and a cable (4); the above-ground steel column (1) is constructed on the outdoor ground (6), and the lower end of the above-ground steel column (1) is buried in the outdoor ground (6); the upper part of the upper pre-buried rigid column (2) is pre-buried in the frame beam (5) of the basement structure, the top end of the upper pre-buried rigid column (2) located on the first floor of the basement is connected to the lower end of the above-ground steel column (1), and the lower part of the upper pre-buried rigid column (2) extends into the basement structure; The upper end of the hook (3) is embedded in the frame beam (5), and the lower end of the embedded hook (3) extends to the bottom of the frame beam (5) and is located in the upper embedded rigid column (2); one end of the cable (4) is connected to the top of the rigid column (7) to be installed, and the other end of the cable (4) passes through the embedded hook (3) and is pulled by the construction personnel, so that the top of the rigid column (7) is connected to the bottom of the upper embedded rigid column (2), and the bottom of the rigid column (7) is connected to the top of the upper embedded rigid column (2) of the next layer.

2. The auxiliary installation structure of the rigid column in the cover-dig method according to claim 1 is characterized by: A rigid column fixing base (9) is pre-embedded on the top of the upper pre-embedded rigid column (2) of the next layer, and the bottom of the rigid column (7) is connected and fixed to the rigid column fixing base (9).

3. The auxiliary installation structure of the rigid column in the cover-dig method according to claim 1 is characterized by: The upper pre-buried rigid column (2) located in the underground floor is covered with an external short column (8), which is pre-buried in the outdoor ground (6) and the frame beam (5) and extends to the lower part of the above-ground steel column (1), so that the above-ground steel column (1) and the upper pre-buried rigid column (2) are connected into an integrated structure through the external short column (8).

4. The auxiliary installation structure of the rigid column in the cover-dig method according to claim 1 is characterized by: The embedded hook (3) is in the shape of an inverted "J"; the top ends of the embedded hook (3) are embedded in the concrete of the frame beam (5) and overlap the beam reinforcement (501) of the frame beam (5); the bottom of the embedded hook (3) forms an annular structure below the bottom surface of the frame beam (5) for the cable (4) to pass through.

5. The auxiliary installation structure of the rigid column in the cover-dig method according to claim 1 or 4 is characterized in that: The embedding length of the top ends of the embedded hook (3) in the frame beam (5) of the first floor of the basement is not less than 35 times of the diameter.

6. The auxiliary installation structure of the rigid column in the cover-dig method according to claim 1 or 2 is characterized by: The rigid column (7) comprises a steel column (701) and column reinforcement (702), wherein the column reinforcement (702) is circumferentially arranged outside the steel column (701) and connected to the steel column (701), and concrete (703) is poured to wrap the steel column (701) and the column reinforcement (702) to form the rigid column (7).

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