Steel structure stand column base pouring formwork

Abstract

The invention relates to a steel structure stand column base pouring formwork. The steel structure stand column base pouring formwork comprises a steel reinforcement cage body, an outer formwork body, an inner formwork body and split bolts. A cavity matched with the inner mold body is formed in the center of the top of the reinforcement cage body; the inner die body is arranged in the cavity; the outer formworks vertically cover all the side faces of the reinforcement cage body. The middle of the split bolt penetrates through the middle of the inner die body, and two ends of the split bolt penetrate through the outer die plate and are in threaded fit with E-shaped clamps abutting against the outer die plate; more than two split bolts penetrate through each outer template; the side face and the bottom of the inner mold body are covered with partition layers. The pluggable inner mold body is used for replacing an inner supporting mold to complete pouring of the steel structure stand column base, the surface and the bottom of the inner mold body are covered with the separation layers, the mold removing difficulty of the inner mold is reduced, and the forming efficiency of the steel structure stand column base is improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure pile construction, in particular to a steel structure column base casting template. Background Art

[0002] The base of a steel structure column refers to an important component that connects the steel structure column to the ground foundation, which directly determines the stability and safety of the main body of the steel structure; the common steel structure column base includes a base plate and anchor bolts; the base plate connects the anchor bolts to the steel structure column. This type of steel structure column base is only suitable for the installation of small steel structure bodies with smaller spans, and is not suitable for large steel structure bodies with larger spans. For large steel structure bodies, the steel structure column base is cast with concrete, buried deep below the foundation, and is provided with a vertical countersunk hole; the bottom end of the steel structure column is inserted into the vertical countersunk hole, which can ensure good structural stability and a certain shear resistance. However, in order to ensure the formation of the vertical countersunk hole, the column base made of concrete requires internal and external formwork. Because the size of the vertical countersunk hole is very small, the internal formwork of the steel structure column base is difficult to remove, and the demolding efficiency is low. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problem and provide a casting template for a steel structure column base.

[0004] The technical scheme of the present invention is as follows: a casting template for a steel structure column base includes a steel cage, an outer template, an inner template, and tension bolts; the steel cage is cup-shaped as a whole, and a cavity matching the inner template is provided at the top center, corresponding to the position and size of the formed vertical countersunk holes; the inner template is arranged inside the cavity; the outer template vertically covers the sides of the steel cage; the inner template replaces the conventional inner template support template, and cooperates with the outer template to realize the support of the steel structure column base; the middle part of the tension bolt passes through the middle part of the inner template, and the two ends pass through the outer template and then the threads are matched with mountain-shaped clips that press the outer template; each outer template has more than two tension bolts passing through; the tension bolts fully limit the inner template to prevent the inner template from being displaced during casting, so that the formed vertical countersunk holes are misplaced; the sides and bottom of the inner template are covered with a partition layer; the partition layer separates the inner template from the concrete; the affinity of the partition layer to the concrete is not high, so that the inner template can be easily pulled out, reducing the difficulty of demolding and improving the forming efficiency of the steel structure column base.

[0005] Preferably, the partition layer uses a plastic pad, which is easy to cut and process, can be pasted on the inner mold body, and has low affinity with concrete.

[0006] Preferably, the inner mold body is a hollow box as a whole, which reduces its own weight and facilitates pulling out; support bars are evenly distributed inside the inner mold body to support the outer surface of the inner mold body to prevent the inner mold body from being squeezed and deformed during pouring, which affects the formation of the vertical countersunk holes.

[0007] Preferably, the inner mold body is in the shape of an inverted cone as a whole, which is convenient for pulling out.

[0008] Preferably, loops are symmetrically provided on the outer side of the inner mold body; the inner walls on both sides of the loop are tightly fixed to the sides of the inner mold body; the bottom of the loop is tightly fixed to the bottom of the inner mold body; the loop is stably connected to the inner mold body; the top of the loop exceeds the top of the inner mold body, which is conducive to the lifting and transportation of the inner mold body.

[0009] Furthermore, the midpoint of the top of the loop is bent upward; when the inner mold body is hoisted, the bent portion can be used as a hoisting point to ensure stable hoisting of the inner mold body.

[0010] Preferably, the outer wall of the outer formwork is provided with vertical square timbers and horizontal flat irons; each mountain-shaped card is provided with two vertical square timbers on the left and right sides; each mountain-shaped card is symmetrically provided with two horizontal flat irons on the upper and lower sides; the inner wall of the vertical square timber is abutted against the outer wall of the outer formwork; one end of the horizontal flat iron is abutted against the outer wall of the vertical square timber; the mountain-shaped card is abutted against the other end of the horizontal flat iron; the mountain-shaped card acts evenly on the outer formwork through the horizontal flat iron and the vertical square timber in turn to ensure the strength of the formwork.

[0011] Preferably, the casting template for the steel structure column base also includes a limiting flat iron, a limiting mountain-shaped clip, and vertical steel bars; the two ends of the limiting flat iron are placed on the top of the outer template, and the middle part is against the top of the inner mold body; there are several vertical steel bars, which are symmetrically arranged front and back about the inner mold body; the lower end of the vertical steel bar is fixedly connected to the steel cage, and the upper end is matched with a limiting mountain-shaped clip; the limiting mountain-shaped clip cooperates with the top of the outer template to clamp the limiting flat iron; the limiting flat iron vertically limits the inner membrane plate to prevent the inner mold body from being lifted up during casting, thereby ensuring the forming depth of the vertical countersunk hole.

[0012] Furthermore, the vertical steel bars are arranged symmetrically about the inner mold body, so that the limiting flat iron can evenly limit the inner mold body vertically.

[0013] Preferably, the bottom of the steel cage is connected to a concrete foundation to increase the contact area with the ground and ensure the stability of the steel structure column base.

[0014] Furthermore, the concrete foundation is in a cone shape, which increases the volume of earth that can be accommodated above the concrete foundation and improves the overall stability of the steel structure column base.

[0015] The beneficial effects of the present invention are as follows: the casting template for the steel structure column base of the present invention has the following advantages: (1) The present invention uses a pluggable inner mold body instead of an inner supporting mold to complete the casting of the steel structure column base, and covers the surface and bottom of the inner mold body with a partition layer, thereby reducing the difficulty of removing the inner mold and improving the forming efficiency of the steel structure column base; (2) The limiting flat iron of the present invention limits the inner membrane plate vertically to prevent the inner mold body from being lifted up during casting, thereby ensuring the forming depth of the vertical countersunk hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a casting template for a steel structure column base of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 yes Figure 2 AA section view; Figure 4 yes Figure 3 BB cross-sectional view; Figure 5 It is a schematic diagram of the use process of the casting template of the steel structure column base of the present invention; Figure 6 It is a physical picture of the casting template of the steel structure column base of the present invention; In the figure: 0. foundation pit, 01. concrete short column, 02. rectangular steel cage, 1. steel cage, 11. concrete foundation, 2. outer formwork, 21. vertical square wood, 22. horizontal flat iron, 3. inner formwork, 31. partition layer, 32. support bar, 33. ring, 4. tension bolt, 41. mountain-shaped clamp, 5. limit flat iron, 6. limit mountain-shaped clamp, 7. vertical steel bar. DETAILED DESCRIPTION

[0017] Example 1: See Figure 1-5 A casting template for a steel structure column base includes a steel cage 1, an outer template 2, an inner template 3, and tension bolts 4; the steel cage 1 is cup-shaped as a whole, and a cavity matching the inner template 3 is provided at the top center, corresponding to the position and size of the formed vertical countersunk hole; the inner template 3 is arranged inside the cavity; the outer template 2 vertically covers all sides of the steel cage 1; the inner template 3 replaces the conventional inner template support template, and cooperates with the outer template to realize the support of the steel structure column base; the tension bolts 4 pass through the middle of the inner template 3, and the two ends pass through the outer template 2 The thread is equipped with a mountain-shaped clip 41 that presses against the outer formwork 2; each outer formwork 2 has more than two tension bolts 4 passing through it; the tension bolts 4 fully limit the inner formwork 3 to prevent the inner formwork 3 from being displaced during pouring, causing the formed vertical countersunk holes to be misaligned; the sides and bottom of the inner formwork 3 are covered with a partition layer 31; the partition layer 31 separates the inner formwork 3 from the concrete; the partition layer 31 has a low affinity with the concrete, so that the inner formwork 3 can be easily pulled out, reducing the difficulty of demolding and improving the forming efficiency of the steel structure column base.

[0018] Compared with the prior art, the present invention uses a pluggable inner mold body 3 instead of an inner supporting mold to complete the casting of the steel structure column base, and covers the surface and bottom of the inner mold body 3 with a partition layer 31, thereby reducing the difficulty of removing the inner mold and improving the forming efficiency of the steel structure column base.

[0019] The partition layer 31 is made of a plastic pad, which is easy to cut and process, can be pasted on the inner mold body 3, and has low affinity with concrete.

[0020] The inner mold body 3 is a hollow box as a whole, which reduces its own weight and facilitates pulling out; the inner mold body 3 is evenly distributed with support bars 32 to support the outer surface of the inner mold body 3 to prevent the inner mold body 3 from being squeezed and deformed during pouring, which affects the formation of the vertical countersunk hole.

[0021] The inner mold body 3 is in the shape of an inverted cone as a whole, which is convenient for pulling out.

[0022] The outer side surface of the inner mold body 3 is symmetrically provided with a loop 33; the inner walls on both sides of the loop 33 are tightly fixed to the side surfaces of the inner mold body 3; the bottom of the loop 33 is tightly fixed to the bottom of the inner mold body 3; the loop 33 is stably connected to the inner mold body 3; the top of the loop 33 exceeds the top of the inner mold body 3, which is conducive to the lifting and transportation of the inner mold body 3.

[0023] The midpoint of the top of the loop 33 is bent upward; when the inner mold body 3 is hoisted, the bent portion can be used as a hoisting point to ensure stable hoisting of the inner mold body 3.

[0024] The outer wall of the outer formwork 2 is provided with vertical square timbers 21 and horizontal flat irons 22; each mountain-shaped card 41 is provided with two vertical square timbers 21 on the left and right sides; each mountain-shaped card 41 is symmetrically provided with two horizontal flat irons 22 on the upper and lower sides; the inner wall of the vertical square timber 21 is butted against the outer wall of the outer formwork 2; one end of the horizontal flat iron 22 is butted against the outer wall of the vertical square timber 21; the mountain-shaped card 41 is butted against the other end of the horizontal flat iron 22; the mountain-shaped card 41 acts evenly on the outer formwork through the horizontal flat iron 22 and the vertical square timber 21 in turn to ensure the strength of the formwork.

[0025] The casting template for the steel structure column base also includes a limiting flat iron 5, a limiting mountain-shaped clip 6, and a vertical steel bar 7; the two ends of the limiting flat iron 5 are placed on the top of the outer template 2, and the middle part is against the top of the inner mold body 3; there are several vertical steel bars 7, which are symmetrically arranged front and back about the inner mold body 3; the lower end of the vertical steel bar 7 is fixedly connected to the steel cage body 1, and the upper end is matched with a limiting mountain-shaped clip 6; the limiting mountain-shaped clip 6 cooperates with the top of the outer template to clamp the limiting flat iron 5; the limiting flat iron 5 vertically limits the inner membrane plate to prevent the inner mold body 3 from being lifted up during casting, thereby ensuring the forming depth of the vertical countersunk hole.

[0026] The vertical steel bars 7 are arranged symmetrically with respect to the inner mold body 3 , so that the limiting flat irons 5 can evenly limit the inner mold body 3 vertically.

[0027] The bottom of the steel cage 1 is connected to a concrete foundation 11 to increase the contact area with the ground and ensure the stability of the steel structure column base.

[0028] The concrete foundation 11 is in a cone shape, which increases the volume of earth that can be accommodated above the concrete foundation 11 and improves the overall stability of the steel structure column base.

[0029] See also Figure 5 The working process of this embodiment includes the following steps: ① Dig out the foundation pit 0, and densely set a number of short concrete columns 01 at the bottom of the foundation pit 0; half of the short concrete columns 01 are inserted into the bottom of the foundation pit 0, and the other half are exposed; the short concrete columns 01 can improve the bonding strength between the base of the steel structure column and the foundation; ② At the bottom of the foundation pit 0, with the concrete short column 01 arrangement area as the center, the concrete foundation 11 is supported, and a rectangular steel cage 02 and a steel cage 1 are set; the rectangular steel cage 02 corresponds to the concrete foundation 11 and is connected to the steel cage 1; then the concrete foundation 11 is poured; ③ After the concrete foundation 11 is formed, the concrete foundation 11 is demolded; the inner mold body 3 is hoisted into the cavity; ④ First, erect the outer formwork 2, so that the outer template is close to the outer periphery of the steel cage 1; install the limit flat iron 5; lift the inner mold body 3 and abut it against the limit flat iron 5; make horizontal through-holes in the outer template and the inner mold body 3; pass the tension screw through the horizontal through-hole; erect the square wood, and use the horizontal flat iron 22 and the mountain-shaped clamp 41 to achieve clamping; the tension screw fully limits the inner mold body 3; ⑤ Cast between the outer formwork 2 and the inner formwork 3 to form the base of the steel structure column; after the concrete solidifies and takes shape, remove the limit flat iron 5, remove the outer formwork, and finally pull out the inner formwork 3; a vertical countersunk hole appears at the base of the steel structure column; the lower end of the steel structure column can be inserted into the vertical countersunk hole.

[0030] Embodiment 2: Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated here. The difference is that the limiting flat iron 5 is arranged between the two loops 33 to improve the position accuracy of the inner mold body 3 inside the cavity.

Claims

1. A casting template for a steel structure column base, characterized in that: It includes a steel cage, an outer formwork, an inner formwork, and tension bolts; the steel cage is cup-shaped as a whole, and a cavity matching the inner formwork is provided at the top center; the inner formwork is arranged inside the cavity; the outer formwork vertically covers the sides of the steel cage; the middle part of the tension bolts passes through the middle part of the inner formwork, and both ends pass through the outer formwork and are threaded with mountain-shaped clips that press against the outer formwork; each outer formwork has more than two tension bolts passing through it; the sides and bottom of the inner formwork are covered with partition layers.

2. The casting template for the steel structure column base according to claim 1 is characterized in that: The inner mold body is a hollow box body as a whole; the inner mold body is evenly distributed with support bars.

3. The casting template for the steel structure column base according to claim 1 is characterized in that: The inner mold body is an inverted cone as a whole.

4. The casting template for the steel structure column base according to claim 1 is characterized in that: The outer side of the inner mold body is symmetrically provided with a loop; the inner walls on both sides of the loop are tightly fixed to the side of the inner mold body; the bottom of the loop is tightly fixed to the bottom of the inner mold body; the top of the loop exceeds the top of the inner mold body.

5. The casting template for the steel structure column base according to claim 4 is characterized in that: Bend the top midpoint of the loop upward.

6. The casting template for the steel structure column base according to claim 1 is characterized in that: The outer wall of the outer formwork is provided with vertical square timbers and horizontal flat irons; each mountain-shaped card is provided with two vertical square timbers on the left and right sides; each mountain-shaped card is symmetrically provided with two horizontal flat irons on the upper and lower sides; the inner wall of the vertical square timber is butted against the outer wall of the outer formwork; one end of the horizontal flat iron is butted against the outer wall of the vertical square timber; the mountain-shaped card is butted against the other end of the horizontal flat iron.

7. The casting template for the steel structure column base according to claim 1 is characterized in that: It also includes a limit flat iron, a limit mountain-shaped clamp, and vertical steel bars; the two ends of the limit flat iron are placed on the top of the outer formwork, and the middle part is against the top of the inner formwork; there are several vertical steel bars, which are symmetrically arranged front and back about the inner formwork; the lower end of the vertical steel bar is fixedly connected to the steel cage, and the upper end is matched with the limit mountain-shaped clamp; the limit mountain-shaped clamp clamps the limit flat iron.

8. The casting template for the steel structure column base according to claim 7 is characterized in that: The vertical reinforcements are arranged symmetrically about the inner formwork.

9. The casting template for the steel structure column base according to claim 1 is characterized in that: The bottom of the steel cage is connected to a concrete foundation.

10. The casting template for the steel structure column base according to claim 9, characterized in that: The concrete foundation is in the shape of a frustum.

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