Structural column cutting device and construction method during construction of main body

Abstract

The present invention relates to the technical field of building construction, and specifically to a device and a construction method for truncating a structural column during construction of a main body. Two L-shaped steel plates are combined into a detachable formwork, and a truncation space is formed by an inserting plate, which replaces traditional foam boards or sand and gravel filling, thereby avoiding the problems of material residue and intrusion into concrete. The concrete liquid level is monitored in real time through an observation hole, and the step-by-step insertion of the inserting plate ensures the accuracy of the truncation position. The structural column can be cast and truncated by supporting the formwork once, without the need for secondary filling or repairing. The inserting plate and the formwork gap cooperate to form a closed truncation area, and the concrete interface is neat without loose sand or foam residue.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a device for cutting off a structural column during construction of a main body and a construction method. Background Art

[0002] To improve the seismic performance, integrity, and stability of multi-story masonry structures, reinforced concrete structural columns should be installed in the building walls and connected to the ring beams on each floor to enhance the building's stability. Their primary functions in masonry structures are to work together with the ring beams to provide integrity and enhance the seismic performance of the masonry structure. Furthermore, they reduce and control cracks in the walls and enhance the strength of the masonry.

[0003] During the construction phase, to ensure safety, quality, and schedule, and to reduce the amount of secondary structure masonry and wet work required later, most structural columns are removed during the construction of the primary structure. However, according to seismic standards, structural columns are primarily located within seismic walls. They are not primarily responsible for bearing vertical loads, but rather for resisting shear, earthquakes, and other lateral loads. Safety calculations have shown that directly connecting structural columns to the primary structure would increase the overall stiffness of the structure, leading to brittle failure and severely impacting its safety and durability. The Code for Seismic Design of Buildings and the 12G03 Atlas require flexible connections between structural columns in masonry infill walls and the base of the primary beams.

[0004] Currently, during the construction of structural columns during the same phase as the main structure, flexible materials are added to separate the top of the structural column from the bottom of the beam. One approach is to fill the joint with materials such as polystyrene boards or foam boards. Another approach is to cover the top of the structural column with sand and gravel after the structural column has been cast to the bottom of the beam, effectively disconnecting the structural column from the main beam and slab. With traditional construction methods, since the structural column reinforcement is anchored into the main beam and slab structure, whether filled with foam boards or blocked with sand and gravel, there are numerous quality issues during construction, such as operational difficulties, difficulty controlling the liquid level of the structural column concrete, and poor molding quality caused by the material intruding into the concrete. Post-construction work also requires chiseling or repairing the top of the structural column, increasing construction manpower and material investment and resulting in high construction costs.

[0005] In order to overcome the above problems, improve installation efficiency, ensure construction quality, reduce labor intensity and material waste, and better adapt to similar environments in engineering, a structural column follow-up construction truncation device and construction method are proposed. Summary of the Invention

[0006] The present invention aims to solve the above problems and thus provides a structural column cutting device and a construction method for cutting the structural column during the construction of the main body.

[0007] The present invention solves the above problems by adopting the following technical solutions:

[0008] A structural column cutting device for construction of a main body, comprising a template sleeved around the outer periphery of the steel bars at the top of the structural column, the template being composed of two L-shaped steel plates connected end to end, with two long first insertion holes horizontally formed on the main sides of the L-shaped steel plates, a first insertion plate inserted into the first insertion holes, the end of the first insertion plate passing through the first insertion hole on the other L-shaped steel plate, and a notch formed on the first insertion plate corresponding to the position of the steel bars inside the structural column;

[0009] Two second insertion holes are horizontally opened on the secondary side of the L-shaped steel plate and located between the two first insertion holes. A second insertion plate is inserted into the second insertion hole. The end of the second insertion plate passes through the second insertion hole on the other L-shaped steel plate. The second insertion plate is opened with a notch corresponding to the position of the internal steel bar of the structural column. The first insertion plate and the second insertion plate are loosely matched.

[0010] An observation hole is provided on the main side of the L-shaped steel plate and between the two first insertion holes, and a positioning plate is provided on the outer side of the secondary side of the L-shaped steel plate and on the sides away from the two second insertion holes.

[0011] Furthermore, an outer ring lock buckle is provided on the outer side of the end of the main side of the L-shaped steel plate, and an inner ring lock buckle is provided on the inner side of the end of the secondary side for use with the outer ring lock buckle of the other L-shaped steel plate. The inner ring lock buckles and the outer ring lock buckles of the two L-shaped steel plates are aligned up and down, and are inserted with pins; the two L-shaped steel plates can be spliced ​​quickly, and installation and disassembly are relatively quick.

[0012] Furthermore, reinforcing ribs are provided on the inner sides of the main side and the secondary side of the L-shaped steel plate to increase the deformation resistance of the L-shaped steel plate.

[0013] A construction method for a structural column cutting device constructed along with the main body is carried out according to the following steps:

[0014] Step 1: When constructing the column formwork, reserve the installation height of the L-shaped steel plate at the top;

[0015] Step 2: Connect the two L-shaped steel plates end to end on the outer periphery of the top steel bar of the structural column, align the inner ring lock buckle with the outer ring lock buckle up and down, and use a pin to insert the lock hole to lock it to form a casing;

[0016] Step 3: Use wooden blocks to support the positioning plate and fix the casing formed by the two L-shaped steel plates as a whole;

[0017] Step 4: Pour and vibrate the structural column. During the pouring process, if concrete overflows from the observation hole, stop pouring the concrete. Then use the vibrating rod to continue vibrating until the concrete liquid level is at the bottom edge of the observation hole. Then stop vibrating. Insert the two pairs of first and second plug-ins into the corresponding plug-ins, and continue pouring concrete on top. The gap left between the two pairs of plug-ins is used to cut off the top of the structural column.

[0018] Step 5: When the concrete of the structural column reaches the demolding strength, remove it together with the structural column formwork, clean the L-shaped steel plate and the plug plate, and reuse them.

[0019] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features:

[0020] The present invention has a simple structure, convenient construction operation, modular detachable cutoff, and the L-shaped steel plate is locked by an outer ring lock and an inner ring lock pin, so installation and reinforcement are relatively quick; two L-shaped steel plates are combined into a detachable formwork, and a cutoff space is formed by an insert plate, which replaces traditional foam plates or sand and gravel filling, avoiding the problems of material residue and intrusion into concrete; the concrete liquid level is monitored in real time through the observation hole, and the stepped insertion of the insert plate is combined to ensure the accuracy of the cutoff position; the casting and cutoff of the structural column can be completed by one-time formwork support, without the need for secondary filling or repair, and the gap between the insert plate and the formwork is matched to form a closed cutoff area, with a neat concrete interface and no loose sand or foam residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the main structure of an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the splicing structure of the template according to the embodiment of the present invention;

[0023] Figure 3 This is a schematic structural diagram of an L-shaped steel plate according to an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of a structure in use state according to an embodiment of the present invention;

[0025] Marked in the figure are: template 1, second plug-in plate 2, first plug-in plate 3, structural column 4, L-shaped steel plate 11, main side 111, secondary side 112, first plug hole 113, second plug hole 114, observation hole 115, positioning plate 116, outer annular lock buckle 117, inner annular lock buckle 118, and reinforcing rib 119. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0027] See also Figure 1-Figure 4A structural column cutting device for main body construction includes a template 1 that is sleeved on the outer periphery of the top steel bar of the structural column. The template is composed of two L-shaped steel plates 11 connected end to end. Two long first insertion holes 113 are horizontally opened on the main sides 111 of the L-shaped steel plates 11. A first plug plate 3 is inserted into the first insertion hole 113. The end of the first plug plate 3 passes through the first insertion hole 113 on the other L-shaped steel plate 11. A notch is opened on the first plug plate 3 corresponding to the position of the internal steel bar of the structural column 4.

[0028] Two second insertion holes 114 are horizontally formed on the secondary side 112 of the L-shaped steel plate 11 and located between the two first insertion holes 113. A second plug plate 2 is inserted into the second insertion holes 114. The end of the second plug plate 2 passes through the second insertion hole 114 on the other L-shaped steel plate 11. A notch is formed on the second plug plate 2 corresponding to the position of the internal steel bar of the structural column 4. The first plug plate 3 and the second plug plate 2 are loosely fitted.

[0029] An observation hole 115 is provided on the main side 111 of the L-shaped steel plate 11 and between the two first insertion holes 113 . Positioning plates 116 are provided outside the secondary side 112 of the L-shaped steel plate 11 and on opposite sides of the two second insertion holes 114 .

[0030] Furthermore, an outer ring lock buckle 117 is provided on the outer side of the end of the main side 111 of the L-shaped steel plate 11, and an inner ring lock buckle 118 is provided on the inner side of the end of the secondary side 112 for use with the outer ring lock buckle 117 of the other L-shaped steel plate 11. The inner ring lock buckles 118 and the outer ring lock buckles 117 of the two L-shaped steel plates 11 are aligned up and down, and are inserted with pins; the two L-shaped steel plates 11 can be quickly spliced ​​together, and installation and disassembly are relatively quick.

[0031] Furthermore, reinforcing ribs 119 are provided on the inner sides of the primary side 111 and the secondary side 112 of the L-shaped steel plate 11 to increase the deformation resistance of the L-shaped steel plate 11 .

[0032] A construction method for a structural column cutting device constructed along with the main body is carried out according to the following steps:

[0033] Step 1: When supporting the formwork of the structural column 4, reserve the installation height of the L-shaped steel plate 11 at the top;

[0034] Step 2: Connect the two L-shaped steel plates 11 end to end on the outer periphery of the top steel bar of the structural column 4, align the inner annular lock buckle 118 with the outer annular lock buckle 117, and use a pin to insert the lock hole to lock it to form a casing;

[0035] Step 3: Use wooden blocks to support the positioning plate 116 and fix the casing formed by the two L-shaped steel plates 11 as a whole;

[0036] Step 4: pouring and vibrating the structural column 4. During the pouring process, if the concrete overflows from the observation hole 115, stop pouring the concrete. Then use the vibrating rod to continue vibrating until the concrete liquid level is below the observation hole 115. Then stop vibrating. Insert the two pairs of first plug-in plates 3 and second plug-in plates 2 into the corresponding plug-in holes. Continue pouring concrete on top. The gap left between the two pairs of plug-in plates is used to cut off the top of the structural column 4.

[0037] Step 5: When the concrete of the structural column 4 reaches the demoulding strength, it is removed together with the structural column formwork, and the L-shaped steel plate 11 and the insert are cleaned and reused.

[0038] The present invention has a simple structure, convenient construction operation, modular detachable cutoff, and the L-shaped steel plate is locked by an outer ring lock and an inner ring lock pin, so installation and reinforcement are relatively quick; two L-shaped steel plates are combined into a detachable formwork, and a cutoff space is formed by an insert plate, which replaces traditional foam plates or sand and gravel filling, avoiding the problems of material residue and intrusion into concrete; the concrete liquid level is monitored in real time through the observation hole, and the stepped insertion of the insert plate is combined to ensure the accuracy of the cutoff position; the casting and cutoff of the structural column can be completed by one-time formwork support, without the need for secondary filling or repair, and the gap between the insert plate and the formwork is matched to form a closed cutoff area, with a neat concrete interface and no loose sand or foam residue.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the scope of the present invention. Any equivalent changes made using the contents of the present invention specification and its drawings are included in the scope of the present invention.

Claims

1. A structural column cutting device for the main body during construction, comprising a template sleeved around the outer periphery of the top steel bar of the structural column, characterized in that: The template is composed of two L-shaped steel plates connected end to end, with two long first insertion holes horizontally opened on the main sides of the L-shaped steel plates, and a first insertion plate inserted into the first insertion hole. The end of the first insertion plate passes through the first insertion hole on the other L-shaped steel plate, and the first insertion plate is opened with a notch corresponding to the position of the internal steel bar of the structural column; Two second insertion holes are horizontally opened on the secondary side of the L-shaped steel plate and located between the two first insertion holes. A second insertion plate is inserted into the second insertion hole. The end of the second insertion plate passes through the second insertion hole on the other L-shaped steel plate. The second insertion plate is opened with a notch corresponding to the position of the internal steel bar of the structural column. The first insertion plate and the second insertion plate are loosely matched. An observation hole is provided on the main side of the L-shaped steel plate and located between the two first insertion holes, and a positioning plate is provided on the outer side of the secondary side of the L-shaped steel plate and located on the sides away from the two second insertion holes; An outer ring lock buckle is provided on the outer side of the end of the main side of the L-shaped steel plate, and an inner ring lock buckle is provided on the inner side of the end of the secondary side for use with the outer ring lock buckle of the other L-shaped steel plate. The inner ring lock buckles of the two L-shaped steel plates are aligned with the outer ring lock buckles up and down, and are inserted with pins.

2. The structural column cutting device for main body construction according to claim 1 is characterized in that: Reinforcement ribs are provided on the inner sides of the main side and the secondary side of the L-shaped steel plate.

3. A construction method for the structural column main body construction cutting device according to claim 1, characterized in that: Follow these steps: Step 1: When constructing the column formwork, reserve the installation height of the L-shaped steel plate at the top; Step 2: Connect the two L-shaped steel plates end to end on the outer periphery of the top steel bar of the structural column, align the inner ring lock buckle with the outer ring lock buckle up and down, and use a pin to insert the lock hole to lock it to form a casing; Step 3: Use wooden blocks to support the positioning plate and fix the casing formed by the two L-shaped steel plates as a whole; Step 4: Pour and vibrate the structural column. During the pouring process, if concrete overflows from the observation hole, stop pouring the concrete. Then use the vibrating rod to continue vibrating until the concrete liquid level is at the bottom edge of the observation hole. Then stop vibrating. Insert the two pairs of first and second plug-ins into the corresponding plug-ins, and continue pouring concrete on top. The gap left between the two pairs of plug-ins is used to cut off the top of the structural column. Step 5: When the concrete of the structural column reaches the demolding strength, remove it together with the structural column formwork, clean the L-shaped steel plate and the plug plate, and reuse them.

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