Stiffened concrete column braced structure and stiffened concrete column construction method

Abstract

The application relates to the technical field of civil construction, in particular to a stiff concrete column supporting structure and a stiff concrete column construction method. First, the application relates to a stiff concrete column supporting structure, which comprises a foundation supporting frame, a first-stage supporting frame and a second-stage supporting frame; the foundation supporting frame comprises a bottom plate, a reference sleeve and foundation supporting rods; the first-stage supporting frame comprises first-stage supporting rods and positioning sleeves; and the second-stage supporting frame comprises second-stage supporting rods and top supporting pieces. Second, the application relates to a stiff concrete column construction method, which comprises the following steps: erecting the foundation supporting frame; erecting the first-stage supporting frame; hoisting the upper layer of steel; erecting the second-stage supporting frame; and welding, the stiff concrete column supporting structure and the stiff concrete column construction method in the application can guarantee the hoisting precision and welding precision of the upper layer of steel, thereby improving the construction quality of the upper layer of steel, effectively improving the construction efficiency, and reducing the construction difficulty and construction cost.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of civil construction, in particular to a stiff concrete column support structure and a stiff concrete column construction method. BACKGROUND

[0002] Stiff concrete (also known as steel reinforced concrete or stiff steel concrete) is composed of concrete, steel, longitudinal steel and stirrups, that is, steel is added to the original reinforced concrete beams, columns and other components, which can effectively improve the load-bearing capacity of the components.

[0003] For a multi-story building structure using stiff concrete, after the structural columns and floor slabs of the lower structure are constructed, the steel of the upper structure will be hoisted first. Figure 1 The top of the lower steel 4 (steel inside the lower structural column) extends above the floor slab 5, and the bottom of the upper steel 6 (steel inside the upper structural column) needs to be welded to the lower steel 4 when hoisted.

[0004] At the same time, for a general high-rise building, the upper structure is built from the middle or a certain bay, with one bay column grid as a hoisting unit, and is hoisted in the order of steel columns, steel beams and supports, and is expanded to the four corners. Therefore, in general, the installation precision of the first hoisting unit is particularly important.

[0005] For a building using stiff concrete, the hoisting and welding precision of the steel directly affects the construction quality and stability of the building structure. However, at present, when hoisting the steel, only the verticality of the steel is detected by a detector, and the verticality of the steel is adjusted in real time. However, the verticality of the steel is affected by many environmental factors, such as vibration and wind speed, so it is difficult to control the verticality of the steel, and it takes a long time, which leads to high construction difficulty and high construction cost. SUMMARY

[0006] The application provides a stiff concrete column support structure and a stiff concrete column construction method, which can ensure the hoisting precision and welding precision of the steel, thereby improving the construction quality of the steel, and effectively improving the construction efficiency, reducing the construction difficulty and construction cost.

[0007] In a first aspect, the application provides a stiff concrete column support structure, which adopts the following technical scheme:

[0008] A stiff concrete column support structure, comprising a foundation support frame, a first-level support frame and a second-level support frame;

[0009] The foundation support frame comprises a bottom plate, a reference sleeve and a foundation support rod, one end of the foundation support rod is connected with the reference sleeve, and the other end is connected with the bottom plate;

[0010] The first support frame comprises a first support rod and a positioning sleeve; the length of the first support rod is greater than that of the base support rod; one end of the first support rod is connected with the bottom plate, and the other end is connected with the positioning sleeve; the positioning sleeve is located directly above the reference sleeve;

[0011] The second support frame comprises a second support rod and a top support; the length of the second support rod is greater than that of the first support rod; one end of the second support rod is connected with the bottom plate, and the other end is connected with the top support.

[0012] By adopting the above technical scheme, the reference sleeve is sleeved on the top end of the lower profile steel, so as to position the whole steel-concrete column support structure, the four first support rods support the positioning sleeve, and the positioning sleeve is located directly above the reference sleeve. When the upper profile steel is hoisted, the upper profile steel is inserted into the positioning sleeve, so as to realize the transverse positioning of the upper profile steel; the four second support rods and the top support can transversely support the upper profile steel, so as to ensure the stability of the upper profile steel. The transverse positioning and transverse support of the profile steel can be realized, and the positioning accuracy of the upper profile steel can be effectively ensured, so as to facilitate the welding of the upper profile steel and the lower profile steel.

[0013] Preferably, the bottom plate is provided with a sliding block, and the second support rod is hinged with the sliding block; a jacking screw is rotatably arranged on the bottom plate, and the jacking screw is threadedly connected with the sliding block.

[0014] By adopting the above technical scheme, the top support can be abutted with the profile steel by rotating the jacking screw, so as to realize the support of the second support rod and the top support on the upper profile steel.

[0015] Preferably, the top support comprises a first top plate arranged vertically and a second top plate arranged horizontally; the first top plate and the second top plate are in L-shaped distribution and are both connected with the second support rod.

[0016] By adopting the above technical scheme, the first top plate can abut the side wall of the upper profile steel, and the second top plate can abut the bottom wall of the short steel beam, so as to realize the transverse support and vertical support of the upper profile steel, and improve the stability of the upper profile steel.

[0017] Preferably, the first top plate and the second top plate both comprise a main plate connected with the second support rod and a guide plate hinged with the main plate; the guide plate is inclined to the side of the main plate away from the second support rod, and the guide plate and the main plate are connected by a torsional spring.

[0018] By adopting the technical scheme, when the supporting piece is in contact with the upper layer of steel, the guide plate is inclined, so that only one side of the guide plate is in contact with the upper layer of steel, the contact area between the supporting piece and the upper layer of steel is small at this time, the friction is small, the movement of the supporting piece is facilitated, and the supporting position of the upper layer of steel is facilitated. When the supporting piece is in contact with the upper layer of steel, the side wall of the main plate is in contact with the upper layer of steel, at this time, the contact area between the supporting piece and the upper layer of steel is large, the friction is large, and the stability of the supporting piece can be effectively improved.

[0019] Preferably, the secondary support rods are provided in plurality, and the plurality of secondary support rods are distributed around the reference sleeve; a pull rod is arranged between two adjacent secondary support rods, one end of the pull rod is hinged to one of the secondary support rods, and the other end of the pull rod is screwed to the other secondary support rod.

[0020] By adopting the technical scheme, the pull rod can be rotated to tighten and loosen the pull rod. When the pull rod is tightened, the pull rod acts on the plurality of secondary support rods synchronously, so that the top ends of the plurality of secondary support rods are close to each other, the supporting piece is in contact with the upper layer of steel, and the plurality of secondary support rods are fixed at the same time, so as to ensure the stability of the secondary support frame.

[0021] Preferably, the secondary support rods are provided in plurality, and the plurality of secondary support rods are distributed around the reference sleeve; the secondary support rods are provided with anti-disengagement grooves along the length direction of the secondary support rods, the secondary support frame comprises an anti-disengagement ring arranged in the anti-disengagement groove, and the length of the anti-disengagement ring is adjustable.

[0022] By adopting the technical scheme, when the length of the anti-disengagement ring is shortened, the anti-disengagement ring will move to the top of the secondary support rod along the anti-disengagement groove, and when the anti-disengagement ring is tightened, the secondary support rod can be fixed, so that the supporting piece is in contact with the upper layer of steel.

[0023] Preferably, the base support rod and the reference sleeve are detachably connected; and the primary support rod and the positioning sleeve are detachably connected.

[0024] By adopting the technical scheme, the reference sleeve and the positioning sleeve can be detached, which is convenient for transportation.

[0025] Preferably, the end of the base support rod is provided with a clamping head, the clamping head protrudes upwardly from the base support rod; and the reference sleeve is provided with a clamping groove matched with the clamping head.

[0026] By adopting the technical scheme, the clamping head and the clamping groove are matched to realize the connection of the base support rod and the reference sleeve, which is convenient for installation and use.

[0027] On the other hand, the application provides a construction method of a stiff concrete column, comprising the following steps:

[0028] Erecting a base support frame; sleeving a reference sleeve on a lower layer of steel;

[0029] erecting a first support frame;

[0030] hoisting the upper layer of steel; inserting the upper layer of steel into the reference sleeve based on the reference sleeve, and keeping the upper layer of steel in a vertical state;

[0031] erecting a second support frame; keeping the upper layer of steel in a hoisted state; and supporting the connection between the upper layer of steel and the short steel beam by the second support frame;

[0032] welding; welding the connection between the upper layer of steel and the lower layer of steel.

[0033] By adopting the technical scheme, the transverse positioning and transverse support of the upper layer of steel can be realized, the positioning accuracy of the upper layer of steel can be effectively ensured, the welding of the upper layer of steel and the lower layer of steel is facilitated, the hoisting difficulty of the steel is effectively reduced, the required time is shortened, the construction efficiency is improved, and the construction cost is reduced.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] 1. The steel concrete column support structure effectively improves the hoisting accuracy of the upper layer of steel, effectively reduces the hoisting difficulty of the steel, shortens the required time, improves the construction efficiency, and reduces the construction cost through the reference support of the foundation support frame, the transverse positioning of the first support frame, and the transverse support of the second support frame.

[0036] 2. The foundation support frame, the first support frame and the second support frame can be disassembled and assembled, have high convenience, and can be used in the hoisting construction of each layer of steel of a multi-story building, and have low cost. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic diagram of the lower layer of steel, the upper layer of steel and the floor in embodiment 1 of the present application;

[0038] Figure 2 is a structural schematic diagram of the steel concrete column support structure during construction in embodiment 1 of the present application;

[0039] Figure 3 is a structural schematic diagram of the steel concrete column support structure in embodiment 1;

[0040] Figure 4 is a schematic diagram of the connection relationship between the foundation support rod and the reference sleeve in embodiment 1;

[0041] Figure 5 is a structural schematic diagram of the top support member in embodiment 1;

[0042] Figure 6 is a schematic diagram of the connection relationship between the second support rod and the bottom plate in embodiment 1;

[0043] Figure 7 Figure 1 is a schematic diagram of the overall structure of the stiff concrete column support structure in Example 1 when the anti-escape groove and the anti-escape ring are used.

[0044] In the drawings, the following signs are marked: 1, base support frame; 11, bottom plate; 111, sliding block; 112, push screw; 12, reference sleeve; 121, clamping groove; 13, base support rod; 131, clamping head; 2, first-level support frame; 21, first-level support rod; 22, positioning sleeve; 3, second-level support frame; 31, second-level support rod; 32, first top plate; 321, main plate; 322, guide plate; 33, second top plate; 34, pull rod; 35, threaded sleeve; 36, anti-escape groove; 37, anti-escape ring; 4, lower layer shaped steel; 5, floor slab; 6, upper layer shaped steel; 7, short steel beam. DETAILED DESCRIPTION

[0045] The following will be described in detail in combination with the drawings Figures 1-7 The application will be further described in detail.

[0046] The embodiments of the application disclose a stiff concrete column support structure, which is mainly applied to hoisting of the upper layer shaped steel 6 and welding construction of the upper layer shaped steel 6 and the lower layer shaped steel 4. Referring to Figure 1 , the construction scene includes the lower layer shaped steel 4, the floor slab 5 and the upper layer shaped steel 6. The lower layer shaped steel 4 is inserted at the top of the floor slab 5 and extends above the floor slab 5, and the short steel beam 7 is arranged on the side wall of the upper layer shaped steel 6, which is used for pouring the structural beam of the building.

[0047] Referring to Figure 2 and Figure 3 , the stiff concrete column support structure includes the base support frame 1, the first-level support frame 2 and the second-level support frame 3.

[0048] The base support frame 1 includes the bottom plate 11, the reference sleeve 12 and the base support rod 13; the bottom plate 11 is provided with a plurality of, in the embodiments of the application, in order to realize support of the upper layer shaped steel 6 from four directions, the bottom plate 11 is provided with four, and the four bottom plates 11 are arranged around the reference sleeve 12. Each bottom plate 11 and the reference sleeve 12 are connected through the base support rod 13.

[0049] Referring to Figure 4 , one end of the base support rod 13 is fixedly connected with the bottom plate 11, and the other end is provided with the clamping head 131, the clamping head 131 protrudes upwards of the base support rod 13, and the bottom of the reference sleeve 12 is provided with the clamping groove 121 matched with the clamping head 131.

[0050] Referring to Figure 2 and Figure 3The reference sleeve 12 is sleeved on the top end of the lower profiled steel 4, so as to position the whole steel concrete column support structure. In order to facilitate the disassembly of the reference sleeve 12, the reference sleeve 12 is composed of two half pipes which are detachably connected.

[0051] The primary support frame 2 includes four primary support rods 21 and a positioning sleeve 22. The four primary support rods 21 correspond to the four bottom plates 11 one by one. The length of the primary support rod 21 is greater than that of the foundation support rod 13. One end of the primary support rod 21 is detachably connected with the bottom plate 11 through a pin shaft, and the hinge connection between the primary support rod 21 and the bottom plate 11 is realized through the pin shaft. The other end of the primary support rod 21 is detachably connected with the positioning sleeve 22 through a pin shaft.

[0052] The four primary support rods 21 support the positioning sleeve 22, and can make the positioning sleeve 22 located directly above the reference sleeve 12. When hoisting, the upper profiled steel 6 is inserted into the positioning sleeve 22, so as to realize the horizontal positioning of the upper profiled steel 6.

[0053] In order to facilitate the disassembly of the positioning sleeve 22, the positioning sleeve 22 is composed of two half pipes which are detachably connected.

[0054] The secondary support frame 3 includes four secondary support rods 31, and the four secondary support rods 31 correspond to the four bottom plates 11 one by one. The length of the secondary support rod 31 is greater than that of the primary support rod 21. One end of the secondary support rod 31 is connected with the bottom plate 11, and the other end is connected with a top support piece. The bottom plate 11 supports the secondary support rod 31, and the top support piece is used to abut against the upper profiled steel 6. The corresponding top support pieces of the four secondary support rods 31 hold the upper profiled steel 6 from four directions, so as to improve the stability of the upper profiled steel 6.

[0055] Referring to Figure 3 and Figure 5 The top support piece includes a first top plate 32 arranged vertically and a second top plate 33 arranged horizontally, and the first top plate 32 and the second top plate 33 are L-shaped and connected with the secondary support rod 31. The first top plate 32 can abut against the side wall of the upper profiled steel 6, and the second top plate 33 can abut against the bottom wall of the short steel beam 7.

[0056] The first top plate 32 and the second top plate 33 each include a main plate 321 hingedly connected with the secondary support rod 31 and a guide plate 322 hingedly connected with the main plate 321, and the two main plates 321 corresponding to the first top plate 32 and the second top plate 33 are fixedly connected with each other. The guide plate 322 is inclined to the side of the main plate 321 away from the secondary support rod 31, and the guide plate 322 and the main plate 321 are connected by a torsional spring.

[0057] When the supporting piece is in contact with the upper profile steel 6, since the guide plate 322 is inclinedly arranged, only one side of the guide plate 322 is in contact with the upper profile steel 6, at this time, the contact surface between the supporting piece and the upper profile steel 6 is small, the friction is small, the movement of the supporting piece is facilitated, and thus the supporting position of the upper profile steel 6 is facilitated.

[0058] With reference to Figure 3 and with reference to Figure 6 , in order to make the supporting piece abut against the upper profile steel 6, the sliding block 111 is arranged on the bottom plate 11, and the secondary supporting rod 31 is detachably connected with the sliding block 111 through the pin shaft, and the secondary supporting rod 31 is hingedly connected with the bottom plate 11 through the pin shaft; the push screw 112 is rotatably arranged on the bottom plate 11, and the push screw 112 is threadedly connected with the sliding block 111. By rotating the push screw 112, the supporting piece can be made to abut against the profile steel.

[0059] In order to fix the four secondary supporting rods 31 and avoid the secondary supporting rods 31 from falling off, the pull rod 34 is arranged between the adjacent two secondary supporting rods 31, that is, four pull rods 34 are arranged between the four secondary supporting rods 31. One end of the pull rod 34 is ball-hingedly connected with one of the secondary supporting rods 31, and the other end is screw-connected with the threaded sleeve 35, and the threaded sleeve 35 is ball-hingedly connected with the other secondary supporting rod 31, so as to realize the connection between the pull rod 34 and the two secondary supporting rods 31.

[0060] By controlling the relative rotation of the threaded sleeve 35 and the pull rod 34, the tightening and loosening of the pull rod 34 can be realized. When the pull rod 34 is tightened, the four pull rods 34 act on the four secondary supporting rods 31 synchronously, so that the top ends of the four secondary supporting rods 31 are close to each other, thereby realizing the fixation of the four secondary supporting rods 31.

[0061] With reference to Figure 7 , as an optional implementation manner of the embodiment of the application, the pull rod 34 can be replaced by the length-adjustable anti-falling ring 37, and the anti-falling groove 36 is formed on the secondary supporting rod 31 and is arranged along the length direction of the anti-falling groove 36, and the anti-falling ring 37 is sequentially arranged in the anti-falling grooves 36 on the four secondary supporting rods 31. When the length of the anti-falling ring 37 is shortened, the anti-falling ring 37 moves along the anti-falling groove 36 to the top of the secondary supporting rod 31, and when the anti-falling ring 37 is tightened, the supporting piece can abut against the upper profile steel 6.

[0062] The implementation principle of the stiff concrete column support structure in the embodiment of the application is that: the reference sleeve 12 is sleeved on the top end of the lower profile steel 4, so as to position the whole stiff concrete column support structure, the four primary support rods 21 support the positioning sleeve 22 and can make the positioning sleeve 22 located directly above the reference sleeve 12. When hoisting, the upper profile steel 6 is inserted into the positioning sleeve 22, so as to realize the transverse positioning of the upper profile steel 6; the four secondary support rods 31 and the top support piece can transversely support the upper profile steel 6 and ensure the stability of the upper profile steel 6.

[0063] The above-mentioned means can realize the transverse positioning and transverse support of the upper profile steel 6, and can effectively ensure the positioning accuracy of the upper profile steel 6, so as to facilitate the welding of the upper profile steel 6 and the lower profile steel 4.

[0064] Embodiment 2

[0065] The embodiment of the application discloses a construction method of a stiff concrete column, which adopts the stiff concrete column support structure in the embodiment 1 and comprises the following steps:

[0066] Erecting the foundation support frame 1; sleeving the reference sleeve 12 on the lower profile steel 4;

[0067] Erecting the primary support frame 2;

[0068] Hoisting the upper profile steel 6; inserting the upper profile steel 6 into the reference sleeve 12 with the positioning sleeve 22 as a reference, and keeping the upper profile steel 6 in a vertical state;

[0069] Erecting the secondary support frame 3; keeping the upper profile steel 6 in a hoisted state; and making the secondary support frame 3 support the connection between the upper profile steel 6 and the short steel beam 7;

[0070] Welding; welding the connection between the upper profile steel 6 and the lower profile steel 4;

[0071] Finally, the secondary support frame 3, the primary support frame 2 and the foundation support frame 1 are sequentially removed.

[0072] The stiff concrete column support structure can be repeatedly used and has the advantage of low cost.

[0073] The embodiments of the specific implementation mode are the preferred embodiments of the application, and do not limit the protection scope of the application, so that: equivalent changes made according to the structure, shape and principle of the application should be covered in the protection scope of the application.

Claims

1. A reinforced concrete column braced structure, characterized by: It comprises a basic support frame (1), a first-level support frame (2) and a second-level support frame (3); The basic support frame (1) comprises a bottom plate (11), a reference sleeve (12) and a basic support rod (13), one end of the basic support rod (13) is connected with the reference sleeve (12), and the other end is connected with the bottom plate (11); The first-level support frame (2) comprises a first-level support rod (21) and a positioning sleeve (22); the length of the first-level support rod (21) is greater than that of the basic support rod (13); one end of the first-level support rod (21) is connected with the bottom plate (11), and the other end is connected with the positioning sleeve (22); the positioning sleeve (22) is located directly above the reference sleeve (12); The second-level support frame (3) comprises a second-level support rod (31) and a top support; the length of the second-level support rod (31) is greater than that of the first-level support rod (21); one end of the second-level support rod (31) is connected with the bottom plate (11), and the other end is connected with the top support; The top support comprises a vertically arranged first top plate (32) and a horizontally arranged second top plate (33); the first top plate (32) and the second top plate (33) are in L-shaped distribution and are both connected with the second-level support rod (31); The first top plate (32) and the second top plate (33) both comprise a main plate (321) connected with the second-level support rod (31) and a guide plate (322) hinged with the main plate (321); the guide plate (322) is inclined to the side of the main plate (321) away from the second-level support rod (31), and a torsion spring is adopted between the guide plate (322) and the main plate (321).

2. The engineered concrete column braced structure according to claim 1, characterized by: A sliding block (111) is arranged on the bottom plate (11), and the second-level support rod (31) is hinged with the sliding block (111); a push screw (112) is rotationally arranged on the bottom plate (11), and the push screw (112) is threadedly connected with the sliding block (111).

3. The engineered concrete column braced structure according to claim 1, wherein: A plurality of second-level support rods (31) are arranged, and the plurality of second-level support rods (31) are distributed around the reference sleeve (12); a pull rod (34) is arranged between two adjacent second-level support rods (31), one end of the pull rod (34) is hinged with one of the second-level support rods (31), and the other end is screwed with the other second-level support rod (31).

4. 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The engineered concrete column braced structure according to claim 1, wherein: ​ 6. The engineered concrete column braced structure according to claim 5, wherein: ​ 7. A construction method of the self-centering concrete column of the self-centering concrete column braced structure according to any one of claims 1 to 6, characterized by, ​ ​ Erecting a first support frame (2); Hoisting the upper profile steel (6); inserting the upper profile steel (6) into the reference sleeve (12) with the reference sleeve (22) as a reference, and keeping the upper profile steel (6) in a vertical state; Erecting a second support frame (3); keeping the upper profile steel (6) in a hoisted state; and supporting the connection between the upper profile steel (6) and the short steel beam (7) by the second support frame (3); Welding; welding the connection between the upper profile steel (6) and the lower profile steel (4).

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