A new type of precast block and a reinforcement method for the structural columns of the secondary structure of a closed shaft

Abstract

The present invention provides a new type of precast block and a reinforcement method for a secondary structural construction column in a closed shaft, including a first precast block long wing, a second precast block long wing, a first precast block short wing, and a second precast block short wing, wherein: the first precast block long wing is vertically arranged with the first precast block short wing; the second precast block long wing is vertically arranged with the second precast block short wing. The beneficial effects of the present invention are simple structure, low manufacturing cost, convenient use, suitable for the construction of corner construction columns and T-shaped wall construction columns in closed shafts, and a formwork-free reinforcement system is adopted in the shaft, solving the problems of difficult formwork reinforcement and removal in the shaft, improving construction efficiency and construction quality, and effectively reducing costs.

Description

Technical Field

[0001] The present invention belongs to the technical field of building construction engineering, and particularly relates to a precast block for reinforcing the formwork of secondary structural construction columns in a closed shaft and a using method thereof. Background Art

[0002] In building construction engineering, especially in frame structures, fresh air systems, exhaust systems, air supply systems, etc. are involved. The reserved holes for fresh air shafts, exhaust shafts, air supply shafts, etc. on each floor are often arranged side by side (as shown in Figure 1 and Figure 2 ). The periphery of the shaft is a masonry structure. The shaft generally runs through the whole building, and the shaft size is relatively large.

[0003] In building construction, the formwork of secondary structural construction columns generally adopts a wooden formwork reinforcement system. In the construction of the secondary structure of the above shafts, the construction of secondary structural construction columns is involved. There are usually corner construction columns and T-shaped wall construction columns. Coupled with the tooth-like projections of the construction columns, in summary, there are many difficulties in the formwork reinforcement of secondary structural construction columns in a closed shaft in the project, such as: difficult formwork reinforcement and difficult removal of the formwork in the shaft. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the background art and provide a new type of precast block and a reinforcement method for secondary structural construction columns in a closed shaft.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a new type of precast block, characterized in that: it includes a first precast block long wing, a second precast block long wing, a first precast block short wing, and a second precast block short wing, wherein:

[0006] The first precast block long wing is perpendicular to the first precast block short wing;

[0007] The second precast block long wing is perpendicular to the second precast block short wing.

[0008] Further, the precast block is set as a T-shaped column precast block, wherein:

[0009] It further includes a precast block main body;

[0010] The first precast block long wing, the second precast block long wing, the first precast block short wing, and the second precast block short wing are all arranged on the precast block main body, and

[0011] The first precast block long wing and the second precast block long wing are symmetrically arranged on both sides of the precast block main body.

[0012] Further, it further includes a reserved hole for tie bars, a bolt hole, and a bolt end groove arranged on the precast block main body, wherein:

[0013] The reserved holes for tie bars include at least one for the wall tie bars to pass through;

[0014] The bolt holes are located at the center of the precast block body, and the bolt end head card slots are circular and located on the outer periphery of the bolt holes.

[0015] Furthermore, the length of the short wing of the precast block is half of the width of the structural column, the width of the precast block body is the width of the structural column, and the thickness of the precast block body is three times the thickness of the side wing.

[0016] Furthermore, the precast block is set as a corner column precast block, and the long wing of the first precast block is perpendicular to the long wing of the second precast block.

[0017] Furthermore, it also includes reserved holes for tie bars, bolt holes and bolt end head card slots provided on the precast block body, where:

[0018] The reserved holes for tie bars include at least one for the wall tie bars to pass through;

[0019] The bolt holes include two, which are respectively provided on the long wings of the first precast block and the second precast block, and the bolt end head card slots are circular and located on the outer periphery of the bolt holes.

[0020] Furthermore, the length of the long wing of the precast block is half of the width of the structural column.

[0021] Furthermore, it also includes a protrusion provided at the upper end of the precast block and a groove at the bottom, and the size of the protrusion is not larger than the size of the groove.

[0022] Furthermore, the bolt holes include reserved holes for steel bars and reserved holes for bolts, where:

[0023] The reserved holes for steel bars are not smaller than the size of the steel bars welded to the bolt end heads.

[0024] A reinforcement method for the structural columns of the secondary structure of a closed hoistway includes the following construction steps:

[0025] S0: Select a T-shaped column precast block or a corner column precast block according to whether the installed wall is a T-shaped wall or a corner wall;

[0026] S1: After the binding of the secondary structure structural columns is completed, start the wall masonry. During the wall masonry process, install the precast blocks as the wall masonry height increases. The side of the precast block with the circular card slot of the bolt end head is close to the side of the reserved hole in the floor slab. The long wing of the precast block is closely attached to the secondary structure wall, the short wing of the precast block extends into the structural column, and the tie bars are placed into the reserved holes for tie bars of the precast block;

[0027] S2: Place the precast blocks in sequence, with the protrusions on the top of the precast blocks facing upward and extending into the bottom grooves of the previous precast block, and so on until reaching the bottom of the slab or beam.

[0028] S3: After the installation of the precast blocks is completed, install the formwork of the structural column and the wooden square. After the installation is completed, install the reinforcement bolts. The end of the bolt passes through the main body of the precast column and is rotationally clamped in the circular card slot at the end of the bolt. Then install the steel pipe and reinforce with the reinforcement bolts. After that, pour the concrete of the structural column.

[0029] S4: After the pouring of the concrete of the structural column is completed, remove the formwork, cut off the bolt heads, and then carry out plastering.

[0030] The advantages and positive effects of the present invention are:

[0031] 1) It is applicable to the construction of the corner structural columns and T-shaped wall structural columns in the enclosed hoistway.

[0032] 2) The hoistway adopts a formwork-free reinforcement system, which solves the problems of difficult formwork reinforcement and removal in the hoistway.

[0033] 3) The structure is simple, the manufacturing cost is low, and it is convenient to use.

[0034] 4) By adopting this method, the construction efficiency and construction quality can be improved, and the cost can be effectively reduced. Description of the Drawings

[0035] Figure 1 It is the schematic diagram of the secondary structure in the background art;

[0036] Figure 2 It is the schematic diagram of the structure of the wall structural column;

[0037] Figure 3 It is the schematic diagram of the structure when the T-shaped column precast block of the present invention is in use;

[0038] Figure 4 It is the schematic diagram of the structure of the T-shaped column precast block of the present invention;

[0039] Figure 5 It is Figure 4 The sectional structure schematic diagram of a-a in;

[0040] Figure 6 It is Figure 4 The sectional structure schematic diagram of b-b in;

[0041] Figure 7 It is Figure 4 The enlarged view of the bolt hole in;

[0042] Figure 8 It is the enlarged view of the reinforcement bolt;

[0043] Figure 9It is a schematic structural diagram of the corner column precast block when in use in the present invention;

[0044] Figure 10 It is a schematic structural diagram of the corner column precast block of the present invention;

[0045] Figure 11 It is Figure 10 The schematic cross-sectional structure diagram of c-c in

[0046] Figure 12 It is Figure 11 The schematic cross-sectional structure diagram of d-d in

[0047] In the figure:

[0048] 100, Concrete structure; 101, Masonry; 102, Construction column; 201, Wall; 202, Inclined masonry; 203, Upper reserved hopper mouth; 1, Secondary structure wall; 2, Construction column formwork; 3, Reinforcing wooden square; 4, Steel pipe; 5, Reinforcing bolt; 6, Wall tie bar; 7, Corner column precast block; 8, T-shaped column precast block; 9, Floor hole; 5-1, Bolt end; 5-2, Reinforcing bolt body; 7-1-1, First long wing of corner column precast block; 7-1-2, Second long wing of corner column precast block; 7-2-1, First short wing of corner column precast block; 7-2-2, Second short wing of corner column precast block; 7-3, Corner column precast block tie bar reserved hole; 7-4, Corner column precast block protrusion; 7-5, Corner column precast block groove; 7-6, Corner column precast block bolt hole; 7-7, Corner column precast block bolt end card slot; 8-1-1, First long wing of T-shaped column precast block; 8-1-2, Second long wing of T-shaped column precast block; 8-2-1, First short wing of T-shaped column precast block; 8-2-2, First short wing of T-shaped column precast block; 8-3, T-shaped column precast block main body; 8-4, T-shaped column precast block protrusion; 8-5, T-shaped column precast block groove; 8-6, T-shaped column precast block bolt hole; 8-7, T-shaped column precast block tie bar reserved hole; 8-8, T-shaped column precast block bolt end card slot; 8-6-1, Reinforcing bar reserved hole; 8-6-2, Bolt reserved hole. Specific implementation mode

[0049] Example 1:

[0050] This example provides a new type of precast block, Figure 3 It is a schematic structural diagram of the T-shaped column precast block when in use, and this Figure 4 It is a schematic structural diagram of the T-shaped column precast block, as Figure 3 and Figure 4As shown, the prefabricated block is set as a T-column prefabricated block 8, and the T-column prefabricated block 8 is composed of a first T-column prefabricated block long wing 8-1-1, a second T-column prefabricated block long wing 8-1-2, a first T-column prefabricated block short wing 8-2-1, a second T-column prefabricated block short wing 8-2-2, a T-column prefabricated block body 8-3, a T-column prefabricated block protrusion 8-4, a T-column prefabricated block groove 8-5, a T-column prefabricated block bolt hole 8-6, a T-column prefabricated block tie bar reserved hole 8-7, and a T-column prefabricated block bolt end slot.

[0051] in: Figure 5 yes Figure 4 The cross-sectional structure diagram of aa in the figure is as follows: Figure 5 As shown, the long wing 8-1-1 of the first T-shaped column prefabricated block is vertically arranged with the short wing 8-2-1 of the first T-shaped column prefabricated block; the long wing 8-1-2 of the second T-shaped column prefabricated block is vertically arranged with the short wing 8-2-2 of the second T-shaped column prefabricated block.

[0052] The long wing 8-1-1 of the first T-column prefabricated block, the long wing 8-1-2 of the second T-column prefabricated block, the short wing 8-2-1 of the first T-column prefabricated block, and the short wing 8-2-2 of the second T-column prefabricated block are all arranged on the T-column prefabricated block body 8-3, and the long wing 8-1-1 of the first T-column prefabricated block and the long wing 8-1-2 of the second T-column prefabricated block are symmetrically arranged on both sides of the T-column prefabricated block body 8-3.

[0053] Specifically, the height of the T-shaped column prefabricated block 8 is 250mm, the long wings of the two T-shaped block prefabricated blocks have the same structure, the length (considering the width of the tooth joint) is not less than 100mm, the height is 250mm, and the thickness is 20mm; the short wings of the two T-shaped block prefabricated blocks have the same structure, the length of the short wing of the T-shaped block prefabricated block is half the width of the structural column, the outer contour width is the width of the structural column, the height is 250mm, and the thickness is 20mm; the width of the T-shaped column prefabricated block body 8-3 is the width of the structural column, the thickness is 3 times the thickness of the side wing, and the height is 250mm.

[0054] As an optional implementation, Figure 6 yes Figure 4 The cross-sectional structure diagram of bb is as follows: Figure 6 As shown, the T-column prefabricated block protrusion 8-4 and the T-column prefabricated block groove 8-5 are socket-type, with a width*depth of 20mm*50mm. The size of the T-column prefabricated block protrusion 8-4 is slightly smaller than the size of the T-column prefabricated block groove 8-5, ensuring smooth insertion and jamming;

[0055] As an optional implementation, it also includes a T-column prefabricated block tie bar reserved hole 8-7, a T-column prefabricated block bolt hole 8-6 and a T-column prefabricated block bolt end slot 8-8 arranged on the T-column prefabricated block body 8-3, wherein:

[0056] The T-shaped column precast block tie bar reserved holes 8-7 include at least one. Specifically, wall T-shaped column precast block tie bar reserved holes 8-7 are provided at the lower parts of the first T-shaped column precast block short wing 8-2-1 and the second T-shaped column precast block short wing 8-2-2 to ensure that the wall tie bars are continuous and used for the wall tie bars to pass through.

[0057] The T-shaped column precast block bolt hole 8-6 is located at the center of the T-shaped column precast block main body 8-3. The T-shaped column precast block bolt end slot 8-8 is set to be circular and located on the outer periphery of the T-shaped column precast block bolt hole 8-6. Specifically, a bolt reserved hole 8-6 is provided on the T-shaped column precast block main body 8-3, with a size slightly larger than the bolt and the welded round steel at the end, ensuring that the reinforcement bolt can be used for reinforcement. A circular slot 8-8 is provided on the T-shaped column precast block main body 8-3 close to the floor hole side, with a diameter slightly larger than the length of the bolt end 5-1, ensuring that the bolt can rotate.

[0058] As an optional implementation method, Figure 7 Yes Figure 4 The large-scale drawing of the bolt hole in Figure 7 As shown, the reserved T-shaped column precast block bolt hole 8-6 is composed of a steel bar reserved hole 8-6-1 and a bolt reserved hole 8-6-2. The steel bar reserved hole 8-6-1 is slightly larger than the welded steel bar at the end of the reinforcement bolt 5, ensuring that the bolt can pass through for reinforcement. Figure 8 The large-scale drawing of the reinforcement bolt. The reinforcement bolt 5 is composed of a reinforcement bolt body 5-2 and an end welded bolt end 5-1. The end bolt end 5-1 is welded with a Φ6 round steel, with a length of 60 mm, and is welded in the middle of the tie bolt. The spacing of the reinforcement bolts during reinforcement is 500 mm.

[0059] As Figure 3 As shown, the construction steps of the T-shaped column precast block are as follows:

[0060] S1: After the secondary structure construction column is tied, start the masonry of the secondary structure wall 1. During the masonry process of the wall, install the T-shaped column precast block 8 as the wall masonry height increases. The side of the T-shaped column precast block 8 with the bolt end circular slot is close to the floor reserved hole side. The long wing of the precast block is close to the secondary structure wall 1, and the short wing of the precast block extends into the construction column. The tie bar is placed into the T-shaped column precast block tie bar reserved hole 8-7 of the T-shaped column precast block 8.

[0061] S2: Place the T-shaped column precast blocks 8 in sequence, with the top T-shaped column precast block protrusion 8-4 facing up and extending into the T-shaped column precast block groove 8-5 at the bottom of the previous T-shaped column precast block 8, and so on until it is installed to the bottom of the slab or the bottom of the beam.

[0062] S3: After the T-column prefabricated block 8 is installed, the structural column formwork 2 is installed, and the wooden square 3 is reinforced. After the installation is completed, the reinforcing bolt 5 is installed. The bolt end 5-1 passes through the prefabricated column body 8-3, and is rotated and clamped in the bolt end slot of the T-column prefabricated block. The steel pipe 4 is installed and reinforced with the reinforcing bolt 5. After completion, the structural column concrete is poured.

[0063] S4: After the concrete pouring of the structural column is completed, the formwork is removed, the bolt heads are removed, and then plastering is carried out.

[0064] Embodiment 2:

[0065] This embodiment provides a new type of prefabricated block. Figure 9 This is a schematic diagram of the structure when the corner column prefabricated block is used; Figure 10 It is a schematic diagram of the structure of the corner column prefabricated block. Figure 9 and Figure 10 As shown, the corner column prefabricated block 7 is composed of a first corner column prefabricated block long wing 7-1-1, a second corner column prefabricated block long wing 7-1-2, a first corner column prefabricated block short wing 7-2-1, a second corner column prefabricated block short wing 7-2-2, a corner column prefabricated block tie bar reserved hole 7-3, an upper corner column prefabricated block protrusion 7-4, a bottom corner column prefabricated block groove 7-5, a corner column prefabricated block bolt hole 7-6, and a corner column prefabricated block bolt end slot 7-7.

[0066] The prefabricated block is set as a corner column prefabricated block 7, Figure 11 yes Figure 10 The cross-sectional structure diagram of CC is as follows: Figure 11 As shown, different from the first embodiment, in this embodiment, the long wing 7-1-1 of the first corner column prefabricated block is vertically arranged with the long wing 7-1-2 of the second corner column prefabricated block.

[0067] Specifically, the height of the corner column prefabricated block 7 is 250mm, the length of the long wing 7-1 of the prefabricated block is half the width of the structural column, the height is 250mm, the thickness is 60mm, and the outer contour width is the width of the structural column; the length of the short wing 7-2 of the prefabricated block is not less than 100mm (considering the width of the tooth joint), the thickness is 20mm, and the height is 250mm; the upper end of the prefabricated block 7 is provided with a corner column prefabricated block protrusion 7-4, and the bottom is provided with a corner column prefabricated block groove 7-5. The corner column prefabricated block protrusion 7-4 and the corner column prefabricated block groove 7-5 are socket-type, with a width * depth of 20mm * 50mm. The size of the corner column prefabricated block protrusion 7-4 is slightly smaller than the size of the corner column prefabricated block groove 7-5 to ensure smooth insertion and jamming;

[0068] As an optional implementation, it also includes a corner column prefabricated block tie bar reserved hole 7-3, a corner column prefabricated block bolt hole 7-6 and a corner column prefabricated block bolt end slot 7-7 arranged on the prefabricated block body, wherein:

[0069] The reserved holes 7-3 for the tie bars of the corner column precast blocks include at least one, which are arranged at the bottoms of the long wings 7-1-1 of the first corner column precast block and the long wings 7-1-2 of the second corner column precast block, and are used to ensure that the wall tie bars pass through and are connected;

[0070] The bolt holes 7-6 of the corner column precast blocks include two, which are respectively arranged on the long wing 7-1-1 of the first precast block and the long wing 7-1-2 of the second precast block. The sizes of the bolt holes 7-6 of the corner column precast blocks are slightly larger than the bolts and the round steel welded at the ends, so as to ensure that the reinforcement bolts can be used for reinforcement. Figure 12 Yes Figure 11 It is the sectional structure schematic diagram of d-d in the middle, as Figure 12 shown. By arranging the bolt end head clamping grooves 7-7 of the corner column precast blocks on the side of the precast block body close to the floor hole, which are located on the outer periphery of the bolt holes, the bolt end head clamping grooves 7-7 of the corner column precast blocks are set as circular, and the diameter is slightly larger than the length of the bolt end head 5-1, so as to ensure that the bolt can rotate.

[0071] The reserved bolt holes 7-6 for the corner columns of the corner column precast blocks have the same structure as the reserved bolt holes 8-6 for the T-shaped columns of the T-shaped blocks, and are composed of the reserved steel bar holes 8-6-1 and the reserved bolt holes 8-6-2. The reserved steel bar holes 8-6-1 are slightly larger than the steel bars welded at the ends of the reinforcement bolts 5, so as to ensure that the bolts can pass through for reinforcement.

[0072] The reinforcement bolt 5 is composed of a reinforcement bolt body 5-2 and an end-welded bolt end head 5-1. The end bolt end head 5-1 is welded with a Φ6 round steel, and the length is 60 mm. It is welded in the middle of the tie bolt, and the spacing of the reinforcement bolts during reinforcement is 500 mm.

[0073] The construction steps of the corner column precast blocks are as follows:

[0074] S1: After the binding of the secondary structure construction columns is completed, start the masonry of the secondary structure wall 1. During the masonry process of the wall, install the corner column precast blocks 7 along with the masonry height of the wall. The side of the corner column precast block 7 with the round clamping groove for the bolt end head is close to the side of the secondary structure masonry wall. The long wings of the corner column precast block are closely attached to the secondary structure wall 1, the short wings of the corner column precast block extend into the construction column, and the tie bars are placed into the reserved holes 7-3 for the tie bars of the corner column precast blocks in the corner column precast blocks 7.

[0075] S2: Place the corner column precast blocks 7 in sequence, with the protrusions 7-4 of the precast block top facing upward and extending into the grooves 7-5 at the bottom of the previous corner column precast block 7, and so on until it is installed to the bottom of the slab or the bottom of the beam.

[0076] S3: After the installation of the corner column precast block 7 is completed, install the formwork 2 of the structural column, reinforce the wooden square 3. After the installation is completed, install the reinforcing bolt 5. The end 5-1 of the bolt passes through the long wing of the corner column precast block and is rotationally clamped in the bolt end card slot 7-7 of the corner column precast block. Then install the steel pipe 4 and reinforce it with the reinforcing bolt 5. After that, pour the concrete of the structural column.

[0077] S4: After the concrete pouring of the structural column is completed, remove the formwork, remove the bolt head, and then plaster.

[0078] The beneficial effects of the present invention are as follows: It can effectively solve the problems of difficult reinforcement and removal of the structural column in the enclosed hoistway. The precast block in the invention has a simple, novel and unique structure, low manufacturing cost and convenient use. At the same time, the use of the present invention greatly reduces the labor cost and shortens the construction period.

[0079] The above has described a specific embodiment of the present invention in detail, but the described content is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A precast block, characterized in that: It includes a first precast block long wing, a second precast block long wing, a first precast block short wing, and a second precast block short wing, where: The first precast block long wing is vertically arranged with the first precast block short wing; The second precast block long wing is vertically arranged with the second precast block short wing; It further includes a precast block main body, and the first precast block long wing, the second precast block long wing, the first precast block short wing, and the second precast block short wing are all arranged on the precast block main body; It further includes a reserved hole for tie bars, a bolt hole, and a bolt end card slot arranged on the precast block main body.

2. The precast block according to claim 1, characterized in that: The precast block is set as a T-shaped column precast block, where: The first precast block long wing and the second precast block long wing are symmetrically arranged on both sides of the precast block main body.

3. The precast block according to claim 2, characterized in that: The reserved hole for tie bars includes at least one for the wall tie bars to pass through; The bolt hole is located at the center of the precast block main body, and the bolt end card slot is set as circular and located on the outer periphery of the bolt hole.

4. The precast block according to claim 3, wherein: The length of the precast block short wing is half of the width of the structural column, the width of the precast block main body is the width of the structural column, and the thickness of the precast block main body is 3 times the thickness of the side wing.

5. The precast block according to claim 1, characterized in that: The precast block is set as a corner column precast block, and the first precast block long wing is vertically arranged with the second precast block long wing.

6. The precast block according to claim 1, characterized in that: The bolt hole includes two, which are respectively arranged on the first precast block long wing and the second precast block long wing, and the bolt end card slot is set as circular and located on the outer periphery of the bolt hole.

7. The precast block according to claim 6, characterized in that: The length of the precast block long wing is half of the width of the structural column.

8. The precast block according to any one of claims 1-7, characterized in that: It further includes a protrusion arranged at the upper end of the precast block and a groove at the bottom, and the size of the protrusion is not greater than the size of the groove.

9. The precast block according to claim 3 or 6, characterized in that: The bolt hole includes a reserved hole for steel bars and a reserved hole for bolts, where: The reserved hole for steel bars is not less than the size of the steel bars welded to the bolt end.

10. A reinforcement method for the structural construction columns of the secondary structure of a closed hoistway, characterized in that: It includes the following construction steps: S0: Select the T-shaped column precast block according to claim 2 or the corner column precast block according to claim 5 according to whether the installed wall is a T-shaped wall or a corner wall; S1: After the binding of the secondary structure structural column is completed, start the wall masonry. During the wall masonry process, install the precast block as the wall masonry height increases. The side of the precast block with the bolt end card slot is close to the side of the floor reserved hole. The long wing of the precast block is close to the secondary structure wall, the short wing of the precast block extends into the structural column, and the tie bar is placed into the reserved hole for tie bars of the precast block; S2: Place the precast blocks in sequence, with the protrusion at the top of the precast block facing up and extending into the groove at the bottom of the previous precast block, and so on until it is installed to the bottom of the slab or the bottom of the beam; S3: After the installation of the precast block is completed, install the formwork and wooden square of the structural column. After the installation is completed, install the reinforcement bolt. The end of the bolt passes through the main body of the precast column, rotates and clamps tightly in the bolt end card slot, install the steel pipe, and reinforce with the reinforcement bolt. After completion, pour the concrete of the structural column; S4: After the concrete pouring of the structural column is completed, remove the formwork, remove the bolt head, and then carry out plastering.

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