Steel structure stand column bottom jacking device and construction method

Abstract

The invention provides a steel structure stand column bottom jacking device and a construction method.The jacking device comprises a first abutting piece, a second abutting piece and an adjuster, the first abutting piece at least comprises a first inclined face and a first abutting face, and the second abutting piece at least comprises a second inclined face and a second abutting face; the first abutting face and the second abutting face are oppositely arranged, and the first inclined face and the second inclined face are connected in a sliding mode. The adjuster is connected with the first abutting piece and the second abutting piece and can drive the first inclined face and the second inclined face to slide relatively so as to change the distance between the first abutting face and the second abutting face. According to the device for abutting against and fixing the bottom of the steel structure stand column on the inner side of the cup opening, the stability of the steel structure stand column can be improved, the situation that the steel structure stand column inclines due to external disturbance before grouting is avoided, structural damage caused by secondary adjustment or serious inclination is reduced, the construction efficiency is improved, and the construction risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a bottom tightening device for a steel structure column and a construction method. Background Art

[0002] During the construction of a steel structure factory building, after the steel structure columns are placed inside the cup mouth, they are generally fixed with cable wind ropes, and steel wedges are installed at the cup mouth to press against the inner wall of the cup mouth and the outer wall of the steel structure columns to play a certain supporting role.

[0003] The above construction method has the following disadvantages: (1) The steel structure columns are only fixed by pulling with cables and tightening with steel wedges in the middle and lower parts, but there is no fixing measure at the bottom, so its stability is relatively low. In general, during construction, all steel structure columns are placed inside the cup mouth before grouting. If extreme weather, such as typhoons, occurs before grouting, the steel structure columns are easily blown crooked and need to be readjusted, which not only delays the construction period but also may cause economic losses due to accidental injuries. (2) When using cables to fix the steel structure columns, when adjusting the center line of the steel structure columns, it is necessary not only to slowly move the steel structure columns by jacks, but also to frequently change the rooting position of the cables according to the adjusted state of the steel structure columns. The process is relatively cumbersome, difficult, time-consuming and labor-intensive. (3) After the steel structure columns are installed, it is necessary to manually climb up to remove the cables, which is very dangerous. Summary of the invention

[0004] The object of the present invention is to provide a bottom tightening device for a steel structure column and a construction method to solve the above-mentioned problems.

[0005] The technical solution adopted by the present invention is: a bottom tightening device of a steel structure column, which includes: a first abutment member, a second abutment member and an adjuster, the first abutment member includes at least a first inclined surface and a first abutment surface, the second abutment member includes at least a second inclined surface and a second abutment surface, the first abutment surface and the second abutment surface are arranged opposite to each other, and the first inclined surface and the second inclined surface are slidably connected; the adjuster connects the first abutment member and the second abutment member, and can drive the first inclined surface and the second inclined surface to slide relative to each other to change the distance between the first abutment surface and the second abutment surface.

[0006] Furthermore, the adjuster includes a pitch-adjusting screw and a pressure block, and the first abutting member and the second abutting member are respectively provided with an internal thread groove and an elongated through groove for installing the pitch-adjusting screw, and the bottom end of the elongated through groove is connected to the internal thread groove; the pressure block is arranged on the circumferential outer side of the pitch-adjusting screw and abuts against the top surface of the second abutting member; the bottom end of the pitch-adjusting screw passes through the elongated through groove and is connected to the internal thread groove.

[0007] Furthermore, a first limiting wall and a second limiting wall are provided on the first inclined surface, and the first limiting wall and the second limiting arm extend along the inclined direction of the first inclined surface, and opposite side surfaces thereof respectively abut against a group of opposite side surfaces of the second abutting member.

[0008] Furthermore, the length direction of the elongated through slot is perpendicular to the second abutting surface, and the width direction dimension is smaller than the sum of the cross-sectional dimensions of the abutting block and the pitch-adjusting screw.

[0009] Furthermore, the regulator includes a transmission rod, the bottom end of which is provided with a plurality of positive L-shaped blocks dispersed along its circumference, and the top end of the pitch adjusting screw is provided with a plurality of inverted L-shaped blocks dispersed along its circumference; the positive L-shaped block has an opposite rotation direction to the inverted L-shaped block and is clamped.

[0010] Furthermore, the transmission rod includes a bottom connecting rod and a plurality of standard rods, the positive L-shaped block is arranged at the bottom end of the bottom connecting rod, and the plurality of standard rods are rotatably connected in sequence to the top end of the bottom connecting rod.

[0011] Furthermore, a concave block and a convex block are respectively formed at both ends of the standard rod, the convex block is formed with a first hinge block extending radially along the standard rod, and second hinge blocks are formed at both ends of the concave block away from the standard rod; the second hinge block is parallel to the extension direction of the first hinge block and is used to hinge the first hinge block on another standard rod.

[0012] The technical solution of the present invention also includes: a construction method using the above-mentioned bottom tightening device of the steel structure column, which includes the steps of:

[0013] (1) placing a steel structure column in the cup mouth, and placing a plurality of groups of the tightening devices around the circumference of the steel structure column in the cup mouth, with the first abutting surface facing the outer wall of the steel structure column, and the second abutting surface facing the inner wall of the cup mouth;

[0014] (2) After adjusting the centerline position and verticality of the steel structure column, rotate the transmission rod to lower the pitch adjustment screw and the pressure block until each of the first abutting surfaces is pressed against the outer wall of the steel structure column and each of the second abutting surfaces is pressed against the inner wall of the cup mouth;

[0015] (3) Install steel wedges at the top of the cup mouth to temporarily fix the steel structure column.

[0016] The beneficial effects of the present invention include at least: (1) providing a device for fixing the bottom of a steel structure column on the inner side of a cup mouth, which can improve the stability of the steel structure column, avoid it from being skewed due to external disturbance before grouting, reduce secondary adjustment or avoid structural damage caused by serious skew; (2) the abutment force between the first abutment and the steel structure column, and the second abutment and the cup mouth can be changed by rotating the transmission rod. According to the center line of the steel structure column and the adjustment direction of the verticality, the transmission rod in the abutment device on the outer side can be adjusted in different rotation directions, avoiding the problem of frequently changing the rooting position of the cable rope in the prior art, which is time-consuming and labor-intensive; (3) the device does not require high-altitude work during installation and disassembly, which can reduce construction risks; (4) the length of the transmission rod in the device can be increased or decreased according to actual needs, and the operation is simple and the applicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a first state diagram of an embodiment of the present invention;

[0018] Figure 2 is a second state diagram of an embodiment of the present invention;

[0019] Figure 3 is an expanded view of a transmission rod in an embodiment of the present invention;

[0020] Figure 4 is a folding diagram of the transmission rod in an embodiment of the present invention;

[0021] Figure 5 is a bottom structural diagram of a bottom connecting rod according to an embodiment of the present invention;

[0022] Figure 6 is a structural diagram of a standard rod in an embodiment of the present invention;

[0023] Figure 7 is a connection diagram of a standard rod in an embodiment of the present invention;

[0024] Figure 8 Schematic diagram of the connection between the first abutment member and the second abutment member in an embodiment of the present invention.

[0025] In the figure:

[0026] 1. first abutment member; 11. first inclined surface; 12. first abutment surface; 13. internal thread groove;

[0027] 2. second abutting member; 21. second inclined surface; 22. second abutting surface; 23. long through groove;

[0028] 3. Regulator; 31. Adjusting screw; 32. Pressing block; 33. Transmission rod; 331. Bottom connecting rod; 332. Standard rod; 333. Concave block; 334. Convex block; 335. First hinge block; 336. Second hinge block; 34. Positive L-shaped block; 35. Inverted L-shaped block;

[0029] 4. The first limiting wall;

[0030] 5. The second limiting wall;

[0031] 6. Steel structure columns;

[0032] 7. Cup rim;

[0033] 8. Steel wedge. DETAILED DESCRIPTION

[0034] The technical solutions of the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set" and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0036] Reference Figure 1-8 The present embodiment provides a bottom tightening device for a steel structure column, which includes: a first abutment 1, a second abutment 2 and an adjuster 3. The first abutment 1 and the second abutment 2 are both block-shaped. The first abutment 1 at least includes a first inclined surface 11 as a top surface and a first abutment surface 12 as a side surface. The second abutment 2 at least includes a second inclined surface 21 as a bottom surface and a second abutment surface 22 as a side surface. The first abutment surface 12 and the second abutment surface 22 are arranged opposite to and in parallel. The first inclined surface 11 and the second inclined surface 21 are slidably connected. The adjuster 3 connects the first abutment 1 and the second abutment 2, and is used to drive the first abutment 1 and the second abutment 2 to move relative to each other. The relative movement direction of the two satisfies that the spacing between the first abutment surface 12 and the second abutment surface 22 can be changed by the relative sliding of the first inclined surface 11 and the second inclined surface 21.

[0037] When using the device for construction, the device is placed between the outer wall of the bottom end of the steel structure column 6 and the inner wall of the bottom end of the cup mouth 7. It should be noted that: multiple groups of the device (for example, 3 groups, 4 groups or more) need to be evenly dispersed along the circumference of the steel structure column 6; the first abutting surface 12 and the second abutting surface 22 are respectively directed toward the outer wall of the steel structure column 6 and the inner wall of the cup mouth 7, and the first abutting member 1 and the second abutting member 2 are driven to move relative to each other by operating the regulator 3, thereby increasing the first abutting surface 12 By adjusting the spacing between the first abutment member 1 and the second abutment member 22 until the first abutment surface 12 of all the devices abuts against the outer wall of the steel structure column 6 and the second abutment surface 22 abuts against the inner wall of the cup mouth 7, the bottom end of the steel structure column 6 can be limited and fixed, thereby improving its stability before grouting; in addition, the relative position of the first abutment member 1 and the second abutment member 2 can be changed by the regulator 3 at any time according to construction needs to adjust the center line position and verticality of the steel structure column 6, and the limiting effect is good and the operation is simple.

[0038] Reference Figure 2-7 The adjuster 3 includes a pitch-adjusting screw 31, a pressing block 32 and a transmission rod 33. The first abutting member 1 and the second abutting member 2 are respectively provided with an internal thread groove 13 and an elongated through groove 23 for installing the pitch-adjusting screw 31. The bottom end of the elongated through groove 23 is connected to the internal thread groove 13, and the length of the elongated through groove 23 is perpendicular to the second abutting surface 22; the pressing block 32 is arranged on the circumferential outer side of the pitch-adjusting screw 31 and abuts the top surface of the second abutting member 2. The width dimension of the elongated through groove 23 is smaller than the sum of the cross-sectional dimensions of the pressing block 32 and the pitch-adjusting screw 31; the bottom end of the pitch-adjusting screw 31 passes through the elongated through groove 23 and is connected to the internal thread groove 13; the transmission rod 33 is detachably arranged on the top end of the pitch-adjusting screw 31.

[0039] When in use, the rotation of the pitch-adjusting screw 31 can be achieved by rotating the transmission rod 33; when the pitch-adjusting screw 31 rotates, the length of the pitch-adjusting screw 31 extending into the internal thread groove 13 increases, and the height of the abutting block 32 fixedly arranged on the outer wall thereof decreases accordingly, thereby squeezing the second abutting member 2, causing the second abutting member 2 to slide downward along the first inclined surface 11, thereby increasing the distance between the first abutting surface 12 and the second abutting surface 22, thereby achieving the abutting effect of the two on the steel structure column 6 and the cup mouth 7 respectively; the reverse rotation of the pitch-adjusting screw 31 can be achieved by reversely rotating the transmission rod 33 in a certain tightening device, so that the first abutting surface 12 and the steel structure column 6 are only in contact with the steel structure column 6 without squeezing, and the second abutting surface 22 and the steel structure column 6 are only in contact with the steel structure column 6 without squeezing, and then increasing the distance between the first abutting surface 12 and the second abutting surface 22 in the tightening device at other parts of the cup mouth 7, so that the steel structure column 6 squeezes and pushes the above-mentioned relaxed first abutting member 1, and performs the adjustment operation of the center line position and verticality of the steel structure column 6.

[0040] In order to improve the use effect of the device, the first limiting wall 4 and the second limiting wall 5 are further provided on the first inclined surface 11 in the present embodiment. The first limiting wall 4 and the second limiting wall 5 extend along the inclined direction of the first inclined surface 11 and are arranged in parallel. The opposite sides of the first limiting wall 4 and the second limiting wall 5 respectively abut against a group of opposite sides of the second abutting member 2. By limiting the side surfaces of the second abutting member 2 by the first limiting wall 4 and the second limiting wall 5, when the pitch adjusting screw 31 rotates and moves in the elongated through groove 23, the second abutting member 2 can only move up and down along the first inclined surface 11, and cannot rotate or deviate, so as to avoid the angle between the first abutting surface 12 and the second abutting surface 22 from changing, thereby affecting the fixing effect on the steel structure column 6.

[0041] The arrangement of the transmission rod 33 can facilitate construction workers to stand outside the cup mouth 7 to adjust the device. However, in the same construction condition, the height of the cup mouth 7 varies. Therefore, the transmission rod 33 can be arranged as an auxiliary Figure 3 The bottom connecting rod 331 and several standard rods 332 shown in the figure, the bottom of the bottom connecting rod 331 is detachably connected to the top of the pitch adjusting screw 31, the top of the bottom connecting rod 331 is rotatably connected to a standard rod 332, and then according to the height size of the cup mouth 7, a suitable number of standard rods 332 are rotatably connected above the standard rod 332 in sequence. The standard rod 332 can be rotated and folded when transferring the device, and the number of standard rods 332 can be increased or decreased when applied to different working conditions.

[0042] The rotational connection between the bottom connecting rod 331 and the standard rod 332 and the adjacent standard rods 332 can be configured according to actual needs. Here, only some feasible implementation schemes are listed as examples, but they are not intended to limit the scope of protection of the present invention.

[0043] Reference Figure 6-7 The two ends of the standard rod 332 are respectively provided with a concave block 333 and a convex block 334, the convex block 334 is provided with a first hinge block 335 extending along the radial direction of the standard rod 332, and the two ends of the concave block 333 away from the standard rod 332 are provided with a second hinge block 336; the second hinge block 336 is parallel to the extension direction of the first hinge block 335, and is used to hinge the first hinge block 335 on another standard rod 332. According to the different installation directions of the standard rod 332, the concave block 333 and the first hinge block 335 can be configured on the top of the bottom connecting rod 331, or the convex block 334 and the second hinge block 336 can be configured on the top of the bottom connecting rod 331.

[0044] The lengthwise dimensions of the first hinge block 335 and the second hinge block 336 can be configured according to the radial dimensions of the standard rod 332 , so as to enable adjacent standard rods 332 to be rotated and overlapped by 180° without being unable to fold due to mutual squeezing and interference of the ends of the standard rods 332 .

[0045] The detachable connection between the bottom connecting rod 331 and the pitch-adjusting screw rod 31 can be configured according to actual needs. Here, only some feasible implementation schemes are listed as examples, but they are not intended to limit the scope of protection of the present invention.

[0046] Reference Figure 5 The bottom end of the bottom connecting rod 331 is provided with a plurality of positive L-shaped blocks 34 dispersed along its circumference, the vertical end of each positive L-shaped block 34 is connected to the bottom connecting rod 331, and the horizontal end extends along the same rotation direction; the top end of the pitch adjusting screw 31 is provided with a plurality of inverted L-shaped blocks 35 dispersed along its circumference, the vertical end of each inverted L-shaped block 35 is connected to the pitch adjusting screw 31, and the horizontal end extends along the same rotation direction; the positive L-shaped block 34 and the inverted L-shaped block 35 have opposite rotation directions and are clamped.

[0047] When in use, the positive L-shaped block 34 is inserted into the gap between the adjacent inverted L-shaped blocks 35, and at the same time, the inverted L-shaped block 35 is also inserted into the gap between the adjacent positive L-shaped blocks 34, and the bottom connecting rod 331 is rotated along the tightening direction to clamp the lateral end of the positive L-shaped block 34 with the lateral end of the inverted L-shaped block 35. When the device is designed and assembled, the thread direction of the internal thread groove 13 is configured according to the tightening direction, so that when the bottom connecting rod 331 is rotated along the tightening direction, the height of the pressure block 32 can be lowered, and the second abutment 2 can be squeezed downward and the distance between the first abutment surface 12 and the second abutment surface 22 can be expanded. Before grouting, it is only necessary to gently rotate the bottom connecting rod 331 along the loosening direction (i.e., against the tightening direction) to separate the lateral end of the positive L-shaped block 34 from the lateral end of the inverted L-shaped block 35, pull the transmission rod 33 upward, recycle the transmission rod 33, and cast the remaining structure with the slurry.

[0048] In addition, in order to save consumables, the first abutment member 1 and the second abutment member 2 in the device can be respectively configured as partially hollow structures, and the degree of hollowness does not affect the use effect thereof.

[0049] When the device is used for construction, the following steps are included:

[0050] (1) The steel structure column 6 is placed in the cup mouth 7, and multiple sets of the present tightening devices are evenly placed around the circumference of the steel structure column 6 at the inner bottom of the cup mouth 7, wherein the first abutting surface 12 of the first abutting member 1 in the tightening device faces the outer wall of the steel structure column 6, and the second abutting surface 22 of the second abutting member 2 faces the inner wall of the cup mouth 7;

[0051] (2) After adjusting the centerline position and verticality of the steel structure column 6, the transmission rod 33 is rotated to lower the pitch adjustment screw 31 and the pressing block 32, and the second abutting member 2 is squeezed and slides down along the first inclined surface 11 until the first abutting surfaces 12 in all the tightening devices are pressed against the outer wall of the steel structure column 6, and the second abutting surfaces 22 are pressed against the inner wall of the cup mouth 7;

[0052] (3) Install the steel wedge 8 on the top of the cup mouth 7 to complete the temporary fixation of the steel structure column 6 and wait for grouting.

[0053] Compared with the prior art, the beneficial effects of the present invention include at least: (1) providing a device for fixing the bottom of the steel structure column 6 on the inner side of the cup mouth 7, which can improve the stability of the steel structure column 6, avoid it from being skewed due to external disturbance before grouting, reduce secondary adjustment or avoid structural damage caused by serious skew; (2) the clamping force between the first abutment 1 and the steel structure column 6, and the second abutment 2 and the cup mouth 7 can be changed by rotating the transmission rod 33. According to the adjustment direction of the center line and verticality of the steel structure column 6, the transmission rod 33 in the clamping device on the outer side can be adjusted in different rotation directions, avoiding the problem of frequently changing the rooting position of the cable rope in the prior art, which is time-consuming and labor-intensive; (3) the device does not require high-altitude work during installation and disassembly, which can reduce construction risks; (4) the length of the transmission rod 33 in the device can be increased or decreased according to actual needs, and the operation is simple and the applicability is strong.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0055] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A bottom tightening device for a steel structure column, characterized in that: include: A first abutment, a second abutment and an adjuster, the first abutment at least includes a first inclined surface and a first abutment surface, the second abutment at least includes a second inclined surface and a second abutment surface, the first abutment surface and the second abutment surface are arranged opposite to each other, and the first inclined surface and the second inclined surface are slidably connected; the adjuster connects the first abutment and the second abutment, and can drive the first inclined surface and the second inclined surface to slide relative to each other to change the distance between the first abutment surface and the second abutment surface.

2. The bottom tightening device of the steel structure column according to claim 1 is characterized in that: The adjuster includes an adjustable pitch screw and a pressure block, wherein the first abutting member and the second abutting member are respectively provided with an internal thread groove and an elongated through groove for installing the adjustable pitch screw, and the bottom end of the elongated through groove is connected to the internal thread groove; the pressure block is arranged on the circumferential outer side of the adjustable pitch screw and abuts against the top surface of the second abutting member; the bottom end of the adjustable pitch screw passes through the elongated through groove and is connected to the internal thread groove.

3. The bottom tightening device of the steel structure column according to claim 2 is characterized in that: The first inclined surface is provided with a first limiting wall and a second limiting wall. The first limiting wall and the second limiting arm extend along the inclined direction of the first inclined surface, and opposite side surfaces thereof respectively abut against a group of opposite side surfaces of the second abutting member.

4. The bottom tightening device of the steel structure column according to claim 2 is characterized in that: The long through slot is perpendicular to the second abutting surface in its length direction, and its width direction is smaller than the sum of the cross-sectional dimensions of the abutting block and the pitch-adjusting screw.

5. The bottom tightening device of a steel structure column according to any one of claims 2 to 4, characterized in that: The regulator includes a transmission rod, the bottom end of which is provided with a plurality of positive L-shaped blocks dispersed along its circumference, and the top end of the pitch adjusting screw is provided with a plurality of inverted L-shaped blocks dispersed along its circumference; the positive L-shaped block and the inverted L-shaped block have opposite rotation directions and are clamped.

6. The bottom tightening device of the steel structure column according to claim 5 is characterized in that: The transmission rod comprises a bottom connecting rod and a plurality of standard rods, the positive L-shaped block is arranged at the bottom end of the bottom connecting rod, and the plurality of standard rods are rotatably connected in sequence at the top end of the bottom connecting rod.

7. The bottom tightening device of the steel structure column according to claim 6 is characterized in that: A concave block and a convex block are respectively arranged at the two ends of the standard rod; a first hinge block extending radially along the standard rod is arranged on the convex block, and a second hinge block is arranged at the two ends of the concave block away from the standard rod; the second hinge block is parallel to the extension direction of the first hinge block and is used to hinge the first hinge block on another standard rod.

8. A construction method using the bottom tightening device of a steel structure column according to any one of claims 6-7, characterized in that: Includes steps: (1) placing a steel structure column in the cup mouth, and placing a plurality of groups of the tightening devices around the circumference of the steel structure column in the cup mouth, with the first abutting surface facing the outer wall of the steel structure column, and the second abutting surface facing the inner wall of the cup mouth; (2) After adjusting the centerline position and verticality of the steel structure column, rotate the transmission rod to lower the pitch adjustment screw and the pressure block until each of the first abutting surfaces is pressed against the outer wall of the steel structure column and each of the second abutting surfaces is pressed against the inner wall of the cup mouth; (3) Install steel wedges at the top of the cup mouth to temporarily fix the steel structure column.

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