CN115711039B - Construction technology of large steel structure workshop - Google Patents
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- CN115711039B CN115711039B CN202211456050.1A CN202211456050A CN115711039B CN 115711039 B CN115711039 B CN 115711039B CN 202211456050 A CN202211456050 A CN 202211456050A CN 115711039 B CN115711039 B CN 115711039B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 108
- 239000010959 steel Substances 0.000 title claims abstract description 108
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000005516 engineering process Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims abstract description 9
- 238000009435 building construction Methods 0.000 claims abstract description 6
- 238000010586 diagram Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 10
- 230000002787 reinforcement Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
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Abstract
本发明公开了一种大型钢结构厂房施工工艺，包括如下步骤：步骤一、根据相关设计要求，组装墙面钢结构面板，然后按照设计的位置安装钢柱作为网架的柱点支撑结构以及整个钢结构厂房的支撑结构，在钢柱顶部设置网架支座；步骤二、组装网架结构单元并吊装至网架支座上安装，网架为正方四角锥螺栓球平板网架；步骤三、在拼装完成的网架上搭建屋面板层，同时安装墙面钢结构面板完成钢结构厂房的施工。本发明在满足相关施工标准、规范的基础下，能够实现安全高效高质量的施工。
The invention discloses a large-scale steel structure factory building construction process, comprising the following steps: step 1, assembling wall steel structure panels according to relevant design requirements, then installing steel columns as the column point support structure of the grid and the support structure of the entire steel structure factory building according to the designed position, and setting grid supports on the top of the steel columns; step 2, assembling grid structure units and hoisting them to the grid supports for installation, the grid is a square tetrahedral pyramid bolt ball flat grid; step 3, building a roof panel layer on the assembled grid, and installing the wall steel structure panels to complete the construction of the steel structure factory building. The invention can achieve safe, efficient and high-quality construction on the basis of meeting relevant construction standards and specifications.
Description
Technical Field
The invention relates to the technical field of building construction. More particularly, the invention relates to a construction process of a large steel structure factory building.
Background
Steel structure plants are popular because of their high construction speed, light weight, strong bearing capacity, good earthquake resistance, small occupied space area, economy, environmental protection and the like, and nowadays, the steel structure plants have gradually replaced traditional heavy reinforced concrete structures in industrial plant design to be widely used and occupy important roles in building engineering.
In order to fully ensure the construction quality and safely and effectively improve the construction progress, the construction is required to be strictly carried out according to relevant construction standards and specifications in the whole installation process, and under the limitation of the relevant construction standards and specifications, how to safely, efficiently and effectively carry out the construction with high quality is important to pay attention to the project of the application.
Disclosure of Invention
The invention aims to provide a construction process of a large steel structure factory building, which can realize safe, efficient and high-quality construction on the basis of meeting relevant construction standards and specifications.
To achieve these objects and other advantages and in accordance with the purpose of the invention, there is provided a large steel structure plant construction process comprising the steps of:
Firstly, assembling a wall steel structure panel according to related design requirements, then installing steel columns according to designed positions to serve as column point supporting structures of the grid and supporting structures of the whole steel structure factory building, and arranging grid supports at the tops of the steel columns;
Step two, assembling a grid structure unit, and hoisting the grid structure unit to a grid support for installation, wherein the grid is a square quadrangular pyramid bolt ball flat-plate grid;
And thirdly, building a roof slab layer on the assembled net rack, and simultaneously installing a wall steel structure panel to finish the construction of the steel structure factory building.
Preferably, the method for hoisting the net rack to the net rack support in the second step comprises the following steps:
firstly, splicing a ground net rack, and paying off before splicing, so that the support of four steel columns corresponding to a net rack support can pass through the net rack;
Secondly, hoisting the grid frame, wherein 4 automobile cranes are used for hoisting during hoisting, and the positions of hoisting points are selected at four steel columns corresponding to the grid frame support;
Thirdly, carrying out high-altitude bulk loading, wherein the rack which is installed is temporarily supported by a temporary support column during installation, and the rack cannot be removed until the rack is installed on the next support seat to be in place;
and fourthly, repeating the third step until the whole net rack is installed and fixed.
The wall surface steel structure panel assembling and installing method comprises the steps of firstly vertically and correspondingly installing a plurality of transverse supports on steel columns, then welding the steel structure panel on the transverse supports, finally completing the wall surface steel structure panel assembling of a plurality of side surfaces, arranging a plurality of pairs of symmetrical limiting blocks on two opposite sides of the steel columns at intervals along the vertical direction of the steel columns, arranging the pairs of limiting blocks of the steel columns on the same side in the same horizontal plane in a one-to-one correspondence manner, arranging a plurality of pairs of connecting blocks of each steel column in a one-to-one correspondence manner towards the side of the steel column, respectively placing the limiting blocks on the pairs of limiting blocks in a one-to-one correspondence manner, welding the limiting blocks with the connecting blocks placed on the limiting blocks, and welding the connecting blocks with the corresponding steel columns to realize the connection of the transverse supports and the steel columns, wherein the limiting blocks are equal in size with the connecting blocks and the projection images are completely coincident.
The grid support comprises a support body, a matching seat, a limiting body and a pair of limiting blocks, wherein the support body is fixed on a steel column and coincides with the central axis of the steel column, the top of the matching seat is provided with a downward sunken arc-shaped groove, the middle lower part of a lower chord ball of the grid is just matched in the arc-shaped groove, the center of the matching seat is provided with a downward sunken connecting groove, the upper part of the matching seat is of a cylindrical structure, the lower part of the matching seat is of a conical structure of a round table structure, bolt holes in the lower chord ball are matched and connected with a screw rod, the screw rod protrudes out of the outer end of the lower chord ball and is also of a cylindrical structure, the lower part of the screw rod is of a conical structure of a round table structure, the upper part of the matching block is the same as the upper part of the connecting groove, the lower part of the matching block is slightly larger than the inclination angle of the lower part of the connecting groove, the limiting body comprises a limiting frame and a pair of channel blocks, the limiting frame is of a U-shaped structure, the channel blocks are provided with through holes for just penetrating through a pair of side rods of the limiting frame, two opposite sides of the limiting frame are symmetrically penetrated into the concave channel blocks, the pair of channel blocks are formed towards the outer side walls of the corresponding to the channel seat, and then the pair of side rods are matched with the side frames in sequence, and the side frames are matched with the side frames in sequence.
Preferably, a plurality of foundation cushion blocks are detachably arranged at the bottom of the support body of the grid support.
Preferably, the net rack support further comprises a pair of clamps, wherein the clamps are respectively clamped with the upper part and the lower part of the matching seat, the clamps are connected into a whole through connecting strips, the connecting strips are of arc structures which are tightly attached to the outer side wall of the matching seat, the clamps and the connecting strips do not interfere with the limiting body, the fixing supports are symmetrically arranged and do not interfere with the limiting body, the upper ends of the fixing supports are hinged to the outer sides of the upper clamps, and the lower ends of the fixing supports are welded to the outer sides of the top of the matching seat.
Preferably, before the roof slab is installed, the purlin supporting plate is welded on the supporting plate, the purlin supporting plate is of an L shape, the main purlin supporting plate is fixedly installed on the purlin supporting plate through bolts, the section of the main purlin supporting plate is of a C shape, the secondary purlin is vertically installed on the main purlin supporting plate, the secondary purlin is of a Z shape, the roof slab is installed on the secondary purlin supporting plate, the supporting plate is of a sleeve type with internal threads, and the upper chord ball of the net rack is connected to the supporting plate through bolts.
The invention at least comprises the following beneficial effects:
1. The application adopts the structural form of square quadrangular pyramid bolt ball flat plate net frame, and combines the structural support of the steel column, so that the application has high structural strength, strong bearing capacity and good anti-seismic performance, thereby ensuring the quality of the constructed steel structure factory building.
2. The support steel column structure, the net frame, the roof slab layer and the connection among the support steel column structure, the net frame, the roof slab layer can be prefabricated in advance or simply assembled on site, so that the construction efficiency is greatly improved, the construction period is shortened, the labor cost is reduced, the construction budget is reduced, and the cost is saved.
3. The construction of the application is basically completed by simple assembly on site or by a small-sized automobile crane or a simple construction platform, and has high construction safety without large-scale construction equipment.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the ground assembly structure of the net rack of the present invention;
FIG. 2 is a schematic diagram of the structure of the grid frame hoisting of the present invention;
FIG. 3 is a schematic view of the overhead bulk structure of the inventive net rack;
FIG. 4 is a schematic diagram of the grid structure unit of the present invention;
FIG. 5 is a top view of the connection of the lateral support to the steel column of the present invention;
FIG. 6 is a schematic view of the structure of the rack mount of the present invention mated with the lower chord ball of the rack;
FIG. 7 is an enlarged view of the mounting structure under a deck layer of the roof of the present invention.
Reference numerals illustrate:
1. steel column, 2, rack, 3, car hoist, 4, temporary support column, 5, lower string ball, 6, upper string ball, 7, horizontal support, 8, connecting block, 9, support main part, 10, cooperation seat, 11, screw rod, 12, cooperation piece, 13, spacing, 14, passageway piece, 15, side lever, 16, clamp, 17, fixed support, 18, basic cushion, 19, purlin layer board, 20, support, 21, main purlin support, 22, sub-purlin support, 23, roof slab layer.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It should be noted that, in the following embodiments, unless otherwise specified, the experimental methods are conventional methods, and the reagents and materials are commercially available, unless otherwise specified, and in the description of the present invention, the terms "horizontal", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
The invention provides a construction process of a large steel structure factory building, which comprises the following steps:
firstly, assembling a wall steel structure panel according to related design requirements, then installing a steel column 1 according to the designed position to serve as a column point supporting structure of a grid 2 and a supporting structure of the whole steel structure factory building, and arranging a grid support at the top of the steel column 1;
step two, assembling a grid structure unit, and hoisting the grid structure unit to a grid support for installation, wherein the grid 2 is a square quadrangular pyramid bolt ball flat-plate grid;
and thirdly, building a roof slab layer 23 on the assembled net rack 2, and simultaneously installing a wall steel structure panel to finish the construction of the steel structure factory building.
In the technical scheme, the wall steel structure panel is assembled in advance, the wall steel structure panel is directly installed in place in one step during installation, the steel column 1 is directly constructed and supported according to the design position requirement, and the grid frame 2 is also assembled in advance to form a grid-loading structure unit and then hoisted and installed, so that the construction quality is guaranteed, the construction efficiency is improved, and the construction safety is guaranteed. Before the net rack 2 is installed, the axis and the elevation of the net rack support seat are checked by checking the line, and the axis and the elevation of the net rack 2 are required to meet the design requirements and relevant standard regulations. After the roof slab layer 23 is built, the water leakage prevention performance of the heavy point part is detected. Before the net rack 2 is installed, retesting is needed to be carried out on the supporting points of the net rack 2, the application is a column point supporting structure, the axial lines of the supporting points are corrected by using theodolites for supporting the net rack 2, so that the accuracy is ensured, the positions of the supporting points of all steel columns 1 are measured, the requirement of drawing is met, in addition, the embedded parts must be carefully checked and accepted before the net rack 2 is installed, the longitudinal and transverse axial lines are popped up on the basis, elevation of a foundation surface is corrected, the center lines are popped up on four sides of the column, the height difference of adjacent supporting surfaces is not more than 5mm, the axial line deviation of the supporting surfaces is not more than 15mm, and the height difference of the highest and lowest supporting surfaces is not more than 15mm. The reasonable arrangement of the grid-loading structure units ensures that each unit block is divided reasonably, so that plastic deformation in the hoisting process is avoided greatly, and the installation quality is improved. The steel column 1 is installed and constitutes the bearing structure of steel construction factory building, then installs the lateral wall of wall steel construction panel formation steel construction factory building in steel column 1 outside, sets up rack support at steel column 1 top and installs rack 2 again, builds roofing sheet layer 23 again and forms the top of steel construction factory building and shelter from bearing structure, and the overall structure construction of steel construction factory building is accomplished to this.
In another technical scheme, as shown in fig. 1 to 4, the method for hoisting the net rack 2 to the net rack support in the second step specifically comprises the following steps:
Firstly, splicing the ground net rack 2, paying off is carried out before splicing, and the support of four steel columns 1 corresponding to the net rack support can penetrate through the net rack 2;
Secondly, hoisting the grid 2, wherein 4 automobile cranes 3 are used for hoisting during hoisting, and the positions of hoisting points are selected at the positions of four steel columns 1 corresponding to the grid support;
Thirdly, carrying out high-altitude bulk loading, wherein the installed grid frame 2 is temporarily supported through a temporary support column 4 during installation, and can not be removed until the grid frame 2 is installed on the next support seat in place;
And fourthly, repeating the third step until the whole net rack 2 is installed and fixed.
In another technical scheme, as shown in fig. 5, the wall surface steel structure panel assembling and installing concrete method comprises the steps of firstly vertically and correspondingly installing a plurality of transverse supports 7 on a steel column 1, then welding the steel structure panel on the transverse supports 7, finally completing the wall surface steel structure panel assembling of a plurality of sides, arranging a plurality of pairs of symmetrical limiting blocks on two opposite sides of the steel column 1 at intervals along the vertical direction of the steel column 1, arranging the pairs of limiting blocks of the plurality of steel columns 1 on the same side in the same horizontal plane in a one-to-one correspondence manner, arranging a plurality of pairs of connecting blocks 8 of each steel column 1 on the side of the transverse supports 7, respectively and correspondingly placing the limiting blocks on the pairs of limiting blocks, welding the connecting blocks 8 with the corresponding steel columns 1, realizing the connection of the transverse supports 7 and the steel columns 1, and realizing the equal size and the complete superposition of projection diagrams of the limiting blocks and the connecting blocks 8.
In the above technical scheme, if the transverse support 7 is welded or connected to the steel column 1 through bolts in a conventional manner, the equipment such as position calibration needs to be used in a matched manner, the construction is complicated, and the horizontal position of the transverse support 7 needs to be adjusted correspondingly continuously until the actual requirement is met. According to the technical scheme of the application, the limiting blocks are correspondingly arranged on the steel column 1, the positions, the elevations and the like of the steel column 1 are adjusted to meet the design requirements in the previous steps, and the corresponding limiting blocks are designed to meet the design requirements no matter whether the vertical elevations and the horizontal elevations are vertical, so that the plurality of pairs of connecting blocks 8 on the transverse support 7 are just placed on the limiting blocks in one-to-one correspondence, and then welding is carried out, so that temporary placing and welding are realized, the elevations of the transverse support 7 are not required to be adjusted, and a temporary fixing support during welding of the transverse support 7 is also not required. The pair of connecting blocks 8 and the transverse support 7 just form a U-shaped structure to wrap the steel column 1 therein, so that multidirectional welding fixation is realized, and the fixation firmness is also stronger.
In another aspect, as shown in fig. 6, the rack support includes:
a holder body 9 fixed to the steel column 1 and overlapping with the central axis of the steel column 1;
The top of the matching seat 10 is provided with a downward concave arc-shaped groove, the middle lower part of the lower chord ball 5 of the net rack 2 is just matched in the arc-shaped groove, the center of the matching seat 10 is provided with a downward concave connecting groove, the upper part of the matching seat is of a cylindrical structure, the lower part of the matching seat is of a conical structure of a truncated cone-shaped structure, a bolt hole in the lower chord ball 5 is matched and connected with a screw 11, the screw 11 protrudes out of the outer end of the lower chord ball 5 and is also of a conical structure, the upper part of the screw is of a cylindrical structure, the lower part of the screw is of a truncated cone-shaped structure, the diameter of the upper part of the matching block 12 is the same as that of the upper part of the connecting groove, and the inclination angle of the lower part of the matching block 12 is slightly larger than that of the lower part of the connecting groove;
The limiting body comprises a limiting frame 13 and a pair of channel blocks 14, wherein the limiting frame 13 is of a U-shaped structure, the channel blocks 14 are provided with through holes which a pair of side rods 15 of the limiting frame 13 just penetrate, a pair of channels penetrating through a connecting groove are formed in inward concave mode on two opposite sides of the matching seat 10, the pair of channel blocks 14 are fixed on the outer side wall of the matching seat 10 and correspond to the pair of channels, the pair of side rods 15 of the limiting frame 13 sequentially penetrate through the through holes of the pair of channel blocks 14 and the channels in the matching seat 10 and then abut against the top of the matching block 12, and the side rods 15 face the bottom of the matching block 12 to be inclined surfaces.
In the above technical scheme, the rack support is connected with the steel column 1 through the support main body 9, and the cross section of rack support is greater than the cross section of steel column 1 for the support area of rack support is big, and support intensity is high. The net rack support is matched with the lower chord ball 5 through the matching seat 10, so that the net rack support and the lower chord ball 5 are convenient to install and detach. The screw 11 is connected into the bolt hole of the lower chord ball 5, then the screw 11 is connected with the matching block 12, the central axes keep coincident during connection, the connected structure is inserted into the connecting groove of the matching seat 10 downwards, the cambered surface of the lower chord ball 5 is tightly matched with the cambered groove of the matching seat 10, and then the lower chord ball is pressed downwards, so that the inclined surface of the lower part of the matching block 12 is tightly abutted against the inclined surface of the lower part of the connecting groove. In order to further ensure the connection firmness and the connection strength of the lower chord ball 5 and the matching seat 10, the matching block 12 is limited by inserting the limiting frame 13, and the lower chord ball 5 is further limited, and the side rod 15 inclined planes of the limiting frame 13 are arranged to facilitate the lower chord ball to smoothly enter the top surface of the matching block 12 and tightly abut against the matching block 12 downwards. The bottom rod piece of the limiting frame 13 is used for installing and detaching the acting point.
In another technical scheme, a plurality of foundation pads 18 are detachably arranged at the bottom of the support body 9 of the grid support. The elevation of the supporting point of the steel column 1 is measured by using a level gauge, the elevation error of each adjacent supporting point is within 5mm, if the elevation error exceeds the range, the base cushion block 18 is welded at the bottom of the support main body 9 to level, and the number and the thickness of the base cushion block 18 are set according to the actual elevation measurement error.
In another technical scheme, as shown in fig. 6, the rack support further comprises a pair of clips 16, a pair of fixing supports 17 and a pair of fixing supports, wherein the clips 16 are respectively clamped with the upper portion and the lower portion of the matching seat 10, the clips 16 are integrally connected through a connecting strip, the connecting strip is of an arc-shaped structure tightly attached to the outer side wall of the matching seat 10, the clips 16 and the connecting strip do not interfere with the limiting body, the fixing supports 17 are symmetrically arranged and do not interfere with the limiting body, the upper ends of the fixing supports 17 are hinged to the outer side of the upper clips 16, and the lower ends of the fixing supports are welded to the outer side of the top of the matching seat 10.
In the above technical scheme, the lower part of the support point of the net rack 2 of the net rack support should be properly reinforced, the local overlarge stress of the support point of the net rack 2 is avoided, the net rack 2 is sunk, therefore, the further support and strength reinforcement of the net rack support are realized by arranging the clamp 16 and the fixed support 17, the clamp 16 is of the existing clamp 16 structure, the clamp 16 is arranged and clamped on the limiting seat according to the size of the limiting seat, and the pair of clamps 16 are connected into a whole through the connecting strip, so that the net rack support is convenient to store and install and position. A pair of fixing struts 17 are used for side reinforcement. The lower end of the welding position is welded to the support body 9 to realize side reinforcement.
In another technical solution, as shown in fig. 7, before the installation, the purlin supporting plate 19 is welded on the supporting plate 20, which is L-shaped, the main purlin supporting plate 21 is fixedly installed on the purlin supporting plate 19 by bolts, the section of the main purlin supporting plate is C-shaped, the sub purlin is vertically installed on the main purlin supporting plate 21, which is Z-shaped, then the roof board layer 23 is installed on the sub purlin supporting plate 22, the supporting plate 20 is a sleeve-shaped with internal threads, and the upper chord ball 6 of the net rack 2 is connected to the supporting plate 20 by bolts.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
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| CN202211456050.1A CN115711039B (en) | 2022-11-21 | 2022-11-21 | Construction technology of large steel structure workshop |
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| CN202211456050.1A CN115711039B (en) | 2022-11-21 | 2022-11-21 | Construction technology of large steel structure workshop |
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| CN115711039B true CN115711039B (en) | 2025-03-18 |
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| CN217359545U (en) * | 2022-07-28 | 2022-09-02 | 华北科技学院 | A parameter identification test platform for simulating different stress states of sheet metal |
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| CN108590033A (en) * | 2018-05-04 | 2018-09-28 | 国电大渡河沙坪水电建设有限公司 | A kind of factory building roof rack project installation structure and its construction method |
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