Installation method of cold rolling process steel structure column

Abstract

The invention provides a cold rolling process steel structure column installation method, and belongs to the technical field of steel structure construction.The method comprises the steps that slurry blocks are constructed at the positions, corresponding to the four corners of a fixing plate at the bottom of a steel structure column, of a base, two inclined base plates are placed on the tops of the slurry blocks, the lower ends of the two inclined base plates are oppositely arranged, and the inclined faces of the inclined base plates located on the outer sides face downwards; the inclined plane of the inclined base plate located on the inner side faces upwards, and the inclined plane of the inclined base plate located on the outer side is erected on the inclined plane of the inclined base plate located on the inner side, so that the top face of the inclined base plate located on the outer side forms a stress supporting face for the steel structure column. The levelness and perpendicularity of the steel structure column can be rapidly and accurately adjusted, one-time forming installation can be achieved, the installation precision requirement is guaranteed, the construction technology is simple and convenient, and the installation efficiency of the steel structure column is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure construction, and more specifically to a method for installing a cold-rolled steel structure column. Background Art

[0002] Cold rolling process is an advanced steel processing technology. Steel structure columns are the basic structure for supporting pipelines and key equipment. Their installation quality and efficiency directly affect the operation effect of the entire process.

[0003] The steel column is large in size and weight, and requires high installation accuracy. The allowable deviation of the center line of the column base to the positioning axis is generally 2.0mm; the column elevation deviation is generally ±2.0mm; the allowable deviation of the verticality of the column is generally 0.5mm / m, and the total height is not more than 6.0mm; the allowable deviation of the column diagonal is generally 5.0mm. During the construction process, it is necessary to ensure that the four anchor bolts are accurately positioned and that the anchor bolts are not offset during the pouring process, especially the position of the anchor bolts is not changed during the concrete pouring process.

[0004] At present, the traditional method used for installing steel structure columns is to adjust the level and height of the steel columns by adjusting the height of the anchor bolts and nuts. Repeated adjustments are required to meet the installation requirements. The operation is inconvenient and the adjustment efficiency is low. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a method for installing steel structure columns using a cold rolling process, so as to solve the problem in the prior art that the traditional steel structure column installation method requires repeated adjustment of the height of the anchor bolts and nuts to adjust the level and height of the steel column, resulting in inconvenient operation and low adjustment efficiency.

[0006] The cold-rolled steel structure column installation method provided by the present invention comprises the following steps:

[0007] Based on the preset drawings and the positions of the anchor bolts on the base, determine the positions of the grout blocks at the four corners of the fixing plate at the bottom of the steel structure column, and construct the grout blocks at the positions of the grout blocks;

[0008] When the slurry block reaches the preset strength requirement, two inclined pads are placed opposite to each other on the top of the slurry block, the lower ends of the two inclined pads are arranged opposite to each other, the inclined surface of the inclined pad located on the outer side faces downward, and the inclined surface of the inclined pad located on the inner side faces upward, and the inclined surface of the inclined pad located on the outer side is laid on the inclined surface of the inclined pad located on the inner side, so that the top surface of the inclined pad located on the outer side forms a force-bearing support surface for the steel structure column;

[0009] Lift the steel structure column vertically, so that the preset bolt holes on the fixing plate are sleeved on the anchor bolts, and the four corners of the fixing plate are placed on the force-bearing support surface;

[0010] Align the center line of the steel structure column with the center line of the base, and accurately adjust the horizontality and verticality of the steel structure column by adjusting the position of the inclined pad;

[0011] After the horizontality and verticality of the steel structure column meet the preset accuracy requirements, fix the inclined pad, and fix the anchor bolts and the fixing plate with nuts to fix the position of the steel structure column;

[0012] Cast the fixed steel structure columns to complete the installation of the steel structure columns.

[0013] In addition, a preferred solution is that the construction method of the slurry block includes:

[0014] A connecting plate with screw holes is fixed to the middle of at least three sides of a predetermined rectangular pad;

[0015] The screw holes of the connecting plate are sleeved onto the bolts pre-fixed at the positions of the pulp blocks, and nuts are sleeved onto the bolts above and below the connecting plate;

[0016] Adjusting the elevation and levelness of the rectangular pad so that the elevation and levelness of the rectangular pad meet the preset requirements, and fixing the connecting plate to the bolt by means of the nut;

[0017] According to the size requirements of the slurry block, a template is set up on the periphery of the rectangular pad, and grouting is poured into the template to obtain a slurry block.

[0018] In addition, a preferred solution is that the connecting plate is welded and fixed on the rectangular pad.

[0019] In addition, a preferred solution is that the number of the connecting plates is equal to the number of the bolts pre-fixed at the positions of the pulp blocks.

[0020] In addition, a preferred solution is that the preset requirements for the elevation and levelness of the rectangular pad are:

[0021] The deviation between the top surface elevation of the rectangular pad and the preset pad elevation is less than 2 mm;

[0022] The deviation between the horizontality of the rectangular pad and the preset pad horizontality is less than 0.8 mm / m.

[0023] In addition, a preferred solution is that after grouting is performed into the template to obtain a slurry block, the method further comprises:

[0024] The bolts above the upper part of the pulp block are sawed off by a grinding wheel.

[0025] In addition, a preferred solution is that, in the process of vertically lifting the steel structure column, sleeve-fitting the preset bolt holes of the fixing plate onto the anchor bolts, and placing the four corners of the fixing plate on the force-bearing support surface,

[0026] The steel structure column is lifted by a crane, and the hook is slowly raised and slowly rotated to lift the steel structure column vertically.

[0027] In addition, a preferred solution is that the method for aligning the center line of the steel structure column with the center line of the base comprises:

[0028] Mark the vertical and horizontal center lines of the steel structure column on the top surface of the base with ink lines;

[0029] When the ink line formed on the top surface of the base coincides with the center line of the base, it is determined that the center line of the steel structure column is aligned with the center line of the base.

[0030] In addition, a preferred solution is that in the process of accurately adjusting the horizontality and verticality of the steel structure column by adjusting the position of the inclined pad,

[0031] The verticality of the steel structure column is detected by the theodolite, and the horizontality of the steel structure column is detected by the level meter;

[0032] Based on the detection results of the verticality and horizontality of the steel structure column, the horizontality and verticality of the steel structure column are accurately adjusted by adjusting the overlapping positions of the two inclined pads.

[0033] In addition, a preferred solution is that the method for fixing the inclined pad is:

[0034] The inclined pad is fixed on the rectangular pad of the pulp block by spot welding.

[0035] It can be seen from the above technical scheme that the cold-rolled steel structure column installation method provided by the present invention constructs slurry blocks on the four corners of the bottom fixing plate of the steel structure column on the base, and then places two inclined pads on the top of the slurry blocks, and the lower ends of the two inclined pads are arranged opposite to each other, the inclined surface of the inclined pad located on the outside faces downward, and the inclined surface of the inclined pad located on the inside faces upward, and the inclined surface of the inclined pad located on the outside is laid on the inclined surface of the inclined pad located on the inside, so that the top surface of the inclined pad located on the outside forms a force supporting surface for the steel structure column. When the steel structure column is installed, the horizontality and verticality of the steel structure column can be quickly fine-tuned by adjusting the overlapping positions of the two inclined pads on the four corners of the bottom of the steel structure column. After the horizontality and verticality of the steel structure column meet the preset accuracy requirements, the position of the inclined pad is fixed and the fixing plate of the steel structure column is fixed by nuts and anchor bolts, so that one-time molding and installation can be achieved, the installation accuracy requirements are guaranteed, and the construction process is simple, which effectively improves the installation efficiency of the steel structure column.

[0036] In order to achieve the above and related purposes, one or more aspects of the present invention include the features that will be described in detail later. The following description and the accompanying drawings describe some exemplary aspects of the present invention in detail. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By referring to the following description in conjunction with the accompanying drawings, and with a more complete understanding of the present invention, other objects and results of the present invention will become more apparent and easily understood.

[0038] Figure 1 It is a flow chart of a method for installing a cold-rolled steel structure column according to an embodiment of the present invention;

[0039] Figure 2 A schematic diagram of the construction of a rectangular pad according to an embodiment of the present invention;

[0040] Figure 3 It is a schematic diagram of a rectangular pad supporting a template according to an embodiment of the present invention;

[0041] Figure 4 It is a schematic diagram of the structure after the slurry block is constructed according to an embodiment of the present invention;

[0042] Figure 5 It is a schematic diagram of the installation of a steel structure column according to an embodiment of the present invention.

[0043] In the attached drawings, 1-base, 2-anchor bolts, 3-steel structure columns, 31-fixing plates, 311-preset bolt holes, 4-slurry blocks, 41-rectangular pads, 42-connecting plates, 43-bolts, 44-nuts, 45-templates, and 5-inclined pads.

[0044] The same reference numerals throughout the drawings indicate similar or corresponding features or functions. DETAILED DESCRIPTION

[0045] In view of the above-mentioned problems, in the prior art, the traditional steel structure column installation method is adopted, which requires repeated adjustment of the height of the anchor bolts and nuts to adjust the level and height of the steel column, resulting in inconvenient operation and low adjustment efficiency. A cold rolling process steel structure column installation method is proposed.

[0046] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] In order to illustrate the cold-rolled steel structure column installation method provided by the present invention, Figure 1 The process of the cold-rolled steel structure column installation method according to an embodiment of the present invention is shown; Figure 2 It shows a rectangular pad construction structure according to an embodiment of the present invention; Figure 3 It shows a rectangular pad support template structure according to an embodiment of the present invention; Figure 4 The structure after the slurry block construction according to an embodiment of the present invention is shown; Figure 5 A steel structure column installation structure according to an embodiment of the present invention is shown.

[0048] like Figures 1 to 5 As shown together, the cold-rolled steel structure column installation method provided by the present invention comprises the following steps:

[0049] Step S1, based on the preset drawing and the position of the anchor bolts 2 on the base 1, determine the positions of the slurry blocks at the four corners of the fixing plate 31 at the bottom of the steel structure column 3, and construct the slurry blocks 4 at the slurry block positions;

[0050] Step S2, when the slurry block 4 reaches the preset strength requirement, two inclined pads 5 are placed opposite to each other on the top of the slurry block 4, the lower ends of the two inclined pads 5 are arranged opposite to each other, the inclined surface of the inclined pad 5 located on the outer side faces downward, and the inclined surface of the inclined pad 5 located on the inner side faces upward, and the inclined surface of the inclined pad 5 located on the outer side is laid on the inclined surface of the inclined pad 5 located on the inner side, so that the top surface of the inclined pad 5 located on the outer side forms a force-bearing support surface for the steel structure column 3;

[0051] Step S3, vertically hoist the steel structure column 3, so that the preset bolt holes 311 on the fixing plate 31 are sleeved on the anchor bolts 2, and the four corners of the fixing plate 31 are placed on the force-bearing support surface;

[0052] Step S4, aligning the center line of the steel structure column 3 with the center line of the base 1, and adjusting the horizontality and verticality of the steel structure column 3 by adjusting the position of the inclined pad 5;

[0053] Step S5, after the horizontality and verticality of the steel structure column 3 meet the preset accuracy requirements, fix the inclined pad 5, and fix the anchor bolt 2 and the fixing plate 31 with nuts to fix the position of the steel structure column 3;

[0054] Step S6: Cast the fixed steel structure column 3 to complete the installation of the steel structure column.

[0055] The top surface of the inclined pad 5 on the outside forms a force-bearing support surface for the steel structure column 3. When the steel structure column 3 is installed, the horizontality and verticality of the steel structure column 3 can be quickly fine-tuned by adjusting the overlapping positions of the two inclined pads 5 on the four corners of the bottom of the steel structure column 3. After the horizontality and verticality of the steel structure column 3 meet the preset accuracy requirements, the position of the inclined pad 5 is fixed and the fixing 31 of the steel structure column 3 is fixed with the nut and the anchor bolt 2, so that one-time molding and installation can be realized, which ensures the accuracy requirements of the installation, and the construction process is simple, which effectively improves the installation efficiency of the steel structure column.

[0056] As a preferred embodiment of the present invention, the construction method of the slurry block 4 includes:

[0057] A connecting plate 42 with screw holes is fixed to the middle of at least three sides of a preset rectangular pad 41;

[0058] The screw holes of the connecting plate 42 are sleeved onto the bolts 43 that are pre-fixed at the position of the pulp block, and nuts 44 are sleeved on the bolts 43 above and below the connecting plate 42;

[0059] The elevation and levelness of the rectangular pad 41 are adjusted so that the elevation and levelness of the rectangular pad 41 meet the preset requirements, and the connection 42 is fixed to the bolt 43 by the nut 44;

[0060] According to the size requirements of the slurry block, a template 45 is supported on the outer periphery of the rectangular pad 41, and grouting is poured into the template 45 to obtain a slurry block.

[0061] Specifically, based on the preset drawings, bolts 43 are embedded on the base 1 (foundation), and a connecting plate 42 with screw holes is fixed to the side of the rectangular pad 41 according to the number and position of the embedded bolts 43, wherein at least three sides of the rectangular pad 41 are welded with embedded bolts 43 to ensure that the rectangular pad 41 is firmly fixed, and the screw holes of the connecting plate 42 are sleeved on the bolts 43, and a nut is sleeved on the bolt 43 before sleeved, and after the screw holes are sleeved on the bolts 43, another nut is sleeved on the bolt 43, so that nuts 44 are sleeved on the bolts 43 above and below the connecting plate 42 to fix the connecting plate 42, and then fix the rectangular pad 41. Among them, the preferred dimensions of the rectangular pad 41 are 120 mm in length, 70 mm in width, and 14 mm in height; the preferred diameter of the bolt 43 is 7 mm, and the connecting plate 42 is preferably sleeved on 1 / 3 of the bolt 43. With the help of a spirit level, the rectangular pad 41 is adjusted to be installed at a specified height measured from a horizontal reference, and the level is used to adjust the horizontality of the rectangular pad 41 in all directions. When the elevation and levelness of the rectangular pad 41 meet the preset requirements, the connection 42 is fixed to the bolt 43 by a nut 44; then, according to the slurry block size requirements, a template 45 is supported on the outer periphery of the rectangular pad 41, and grouting is poured into the template 45 to obtain a slurry block.

[0062] As a preferred solution of the present invention, the connecting plate 42 is welded and fixed on the rectangular pad 41 .

[0063] Specifically, the connection between the two can be made more firmly by welding and fixing the connection plate 42 .

[0064] As a preferred solution of the present invention, the number of the connecting plates 42 is equal to the number of the bolts 43 pre-fixed at the positions of the pulp blocks.

[0065] Specifically, the connecting plate 42 and the bolts 43 can be pre-designed based on drawings, and one bolt 43 corresponds to one connecting plate 42 .

[0066] As a preferred solution of the present invention, the preset requirements for the elevation and levelness of the rectangular pad 41 are:

[0067] The deviation between the top surface elevation of the rectangular pad 41 and the preset pad elevation is less than 2 mm;

[0068] The deviation between the levelness of the rectangular pad 41 and the preset pad levelness is less than 0.8 mm / m.

[0069] Specifically, the elevation deviation range of the top surface of the rectangular pad 41 is -2mm, and the allowable deviation of the horizontality is 0.8mm / m; after the adjustment is completed, the formwork 45 is first used to support the formwork, and the support height is flush with the rectangular pad 41, and then the grouting material is poured. The width of the slurry block 4 is 30mm wider than the rectangular pad 41, and the length is 20mm longer than the rectangular pad. The thickness can be determined according to on-site requirements.

[0070] As a preferred embodiment of the present invention, after grouting is performed in the template 45 to obtain the slurry block 4, the following steps are further included:

[0071] The bolt 43 that is higher than the top of the pulp block 4 is sawed off by a grinding wheel so that the top surface of the bolt 43 is flush with the top surface of the pulp block 4.

[0072] As a preferred solution of the present invention, when the steel structure column 3 is vertically lifted, the preset bolt holes 311 of the fixing plate 31 are sleeved on the anchor bolts 2, and the four corners of the fixing plate 31 are placed on the force-bearing support surface,

[0073] The steel structure column 3 is hoisted by a crane, and the hook is slowly raised and slowly rotated to vertically hoist the steel structure column 3.

[0074] Specifically, the steel structure column 3 is preferably hoisted by a single-machine rotation method. When the crane lifts the steel structure column 3, it slowly lifts the hook and slowly rotates to make the steel structure column 3 vertical, so that the column base plate is kept 400mm to 600mm from the ground, and the crane arm is slowly rotated until the steel structure column 3 is above the foundation (base 1).

[0075] As a preferred solution of the present invention, a method for aligning the center line of the steel structure column 3 with the center line of the base 1 includes:

[0076] Mark the vertical and horizontal center lines of the steel structure column 3 on the top surface of the base 1 with ink lines;

[0077] When the ink line formed on the top surface of the base 1 coincides with the center line of the base 1 , it is determined that the center line of the steel structure column 3 is aligned with the center line of the base 1 .

[0078] Specifically, before installing the steel structure column 3, it is necessary to check the center line of the steel structure column 3. The vertical and horizontal center lines of the steel structure column 3 are marked on the top surface of the foundation with ink lines, and the distance from the center line to the cup mouth of the base 1 is measured to see whether it is greater than 1 / 2 of the width of the steel structure column 3, and the bottom elevation of the base 1 (foundation) and the bottom surface elevation of the column bottom plate are measured to see whether they meet the requirements.

[0079] As a preferred solution of the present invention, in the process of accurately adjusting the horizontality and verticality of the steel structure column 3 by adjusting the position of the inclined pad 5,

[0080] The verticality of the steel structure column 3 is detected by a theodolite, and the horizontality of the steel structure column 3 is detected by a level meter;

[0081] Based on the detection results of the verticality and horizontality of the steel structure column 3, the horizontality and verticality of the steel structure column 3 are precisely adjusted by adjusting the overlapping positions of the two inclined pads 5.

[0082] As a preferred solution of the present invention, the method for fixing the inclined pad 5 is:

[0083] The inclined pad 5 is fixed to the rectangular pad 41 of the pulp block 4 by spot welding.

[0084] Specifically, after the strength of the grouting concrete reaches the design strength of the foundation concrete after 48 hours, two inclined pads 5 are placed on the top of the slurry block. The preferred size of the inclined pads 5 is 100 mm long, 60 mm wide, and the heights of the two sides are 21 mm and 13 mm respectively. The two inclined pads 5 can be stressed by tapping with a wrench. After the precision of the steel structure column 3 is adjusted, the inclined pads 5 are spot welded and fixed on the rectangular pads 41 of the slurry block 4.

[0085] It can be seen from the above specific implementation methods that the cold-rolled steel structure column installation method provided by the present invention constructs slurry blocks on the four corners of the bottom fixing plate of the steel structure column on the base, and then places two inclined pads on the top of the slurry blocks, and the lower ends of the two inclined pads are arranged opposite to each other, the inclined surface of the inclined pad located on the outside faces downward, and the inclined surface of the inclined pad located on the inside faces upward, and the inclined surface of the inclined pad located on the outside is laid on the inclined surface of the inclined pad located on the inside, so that the top surface of the inclined pad located on the outside forms a force supporting surface for the steel structure column. When the steel structure column is installed, the horizontality and verticality of the steel structure column can be quickly fine-tuned by adjusting the overlapping positions of the two inclined pads on the four corners of the bottom of the steel structure column. After the horizontality and verticality of the steel structure column meet the preset accuracy requirements, the position of the inclined pad is fixed and the fixing plate of the steel structure column is fixed by nuts and anchor bolts, so as to realize one-time molding and installation, ensure the installation accuracy requirements, and the construction process is simple, which effectively improves the installation efficiency of the steel structure column.

[0086] As described above, the cold-rolled steel structure column installation method proposed in the present invention is described by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the cold-rolled steel structure column installation method proposed in the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the attached claims.

Claims

1. A method for installing a cold-rolled steel structure column, characterized in that: The steps include: Based on the preset drawings and the positions of the anchor bolts on the base, determine the positions of the slurry blocks at the four corners of the fixing plate at the bottom of the steel structure column, and construct the slurry blocks at the positions of the slurry blocks; When the slurry block reaches the preset strength requirement, two inclined pads are placed opposite to each other on the top of the slurry block, the lower ends of the two inclined pads are arranged opposite to each other, the inclined surface of the inclined pad located on the outer side faces downward, and the inclined surface of the inclined pad located on the inner side faces upward, and the inclined surface of the inclined pad located on the outer side is laid on the inclined surface of the inclined pad located on the inner side, so that the top surface of the inclined pad located on the outer side forms a force-bearing support surface for the steel structure column; Lift the steel structure column vertically, so that the preset bolt holes on the fixing plate are sleeved on the anchor bolts, and the four corners of the fixing plate are placed on the force-bearing support surface; Align the center line of the steel structure column with the center line of the base, and accurately adjust the horizontality and verticality of the steel structure column by adjusting the position of the inclined pad; After the horizontality and verticality of the steel structure column meet the preset accuracy requirements, fix the inclined pad, and fix the anchor bolts and the fixing plate with nuts to fix the position of the steel structure column; Cast the fixed steel structure columns to complete the installation of the steel structure columns.

2. The cold-rolled steel structure column installation method according to claim 1 is characterized in that: The construction method of the slurry block comprises: A connecting plate with screw holes is fixed to the middle of at least three sides of a predetermined rectangular pad; The screw holes of the connecting plate are sleeved onto the bolts pre-fixed at the positions of the pulp blocks, and nuts are sleeved onto the bolts above and below the connecting plate; Adjusting the elevation and levelness of the rectangular pad so that the elevation and levelness of the rectangular pad meet the preset requirements, and fixing the connecting plate to the bolt by means of the nut; According to the size requirements of the slurry block, a template is set up on the periphery of the rectangular pad, and grouting is poured into the template to obtain a slurry block.

3. The cold-rolled steel structure column installation method according to claim 2 is characterized in that: The connecting plate is welded and fixed on the rectangular pad.

4. The cold-rolled steel structure column installation method according to claim 2 is characterized in that: The number of the connecting plates is equal to the number of the bolts pre-fixed at the positions of the pulp blocks.

5. The cold-rolled steel structure column installation method according to claim 2 is characterized in that: The preset requirements for the elevation and levelness of the rectangular pad are: The deviation between the top surface elevation of the rectangular pad and the preset pad elevation is less than 2 mm; The deviation between the horizontality of the rectangular pad and the preset pad horizontality is less than 0.8 mm / m.

6. The cold-rolled steel structure column installation method according to claim 2 is characterized in that: After grouting is performed in the template to obtain a slurry block, the method further comprises: The bolts above the upper part of the pulp block are sawed off by a grinding wheel.

7. The cold-rolled steel structure column installation method according to claim 1 is characterized in that: In the process of vertically lifting the steel structure column, sleeve-fitting the preset bolt holes of the fixing plate onto the anchor bolts, and placing the four corners of the fixing plate on the force-bearing support surface, The steel structure column is lifted by a crane, and the hook is slowly raised and slowly rotated to lift the steel structure column vertically.

8. The cold-rolled steel structure column installation method according to claim 1, characterized in that: The method for aligning the center line of the steel structure column with the center line of the base comprises: Mark the vertical and horizontal center lines of the steel structure column on the top surface of the base with ink lines; When the ink line formed on the top surface of the base coincides with the center line of the base, it is determined that the center line of the steel structure column is aligned with the center line of the base.

9. The cold-rolled steel structure column installation method according to claim 1, characterized in that: In the process of accurately adjusting the horizontality and verticality of the steel structure column by adjusting the position of the inclined pad, The verticality of the steel structure column is detected by the theodolite, and the horizontality of the steel structure column is detected by the level meter; Based on the detection results of the verticality and horizontality of the steel structure column, the horizontality and verticality of the steel structure column are accurately adjusted by adjusting the overlapping positions of the two inclined pads.

10. The cold-rolled steel structure column installation method according to claim 2, characterized in that: The method for fixing the inclined pad is: The inclined pad is fixed on the rectangular pad of the pulp block by spot welding.

Images