CN116065818A - Steel structure warehouse construction technology - Google Patents
Steel structure warehouse construction technology Download PDFInfo
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- CN116065818A CN116065818A CN202111272686.6A CN202111272686A CN116065818A CN 116065818 A CN116065818 A CN 116065818A CN 202111272686 A CN202111272686 A CN 202111272686A CN 116065818 A CN116065818 A CN 116065818A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
- E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/51—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture specially adapted for storing agricultural or horticultural products
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- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The application discloses a steel structure warehouse construction process, which comprises a steel member processing process and a warehouse installation process; the wall column, the steel beam, the roof sandal strip, the wall sandal strip, the tie bar, the anchor bolt and the high-strength bolt are manufactured through one or more of lofting, material marking, cutting, hole making, correction, polishing, splicing, assembling, friction surface treatment, welding, friction surface anti-slip test and the like, and then the wall column, the steel beam, the roof sandal strip, the wall sandal strip and the tie bar are assembled into a stable steel structure warehouse according to certain steps. The difficulty in the assembly process is greatly reduced, the risk of deformation and installation accidents is reduced, the labor intensity is low, and the engineering efficiency is improved. The manufacturing process of the steel member is helpful to ensure that each step is not lost and omitted, thereby ensuring the machining precision, the outline dimension and the basicity of the high-quality engineering of each steel member.
Description
Technical Field
The application relates to the technical field of building manufacturing, in particular to a steel structure warehouse construction process.
Background
The steel structure warehouse is widely favored by industrial warehouse or factory building construction parties because of the advantages of light weight, high strength, large span, short construction period, low investment cost, convenient moving, no pollution in recovery and the like.
When the steel structure warehouse is constructed and installed, the connection of a plurality of steel components is involved, such as the connection of beams, columns and the like, the structure of each part is complex, parts are trivial, the installation engineering quantity is large, the installation of most parts is basically all high-altitude operation, the safety risk is high, the installation progress is slow, the construction period is influenced, especially, the large-span roof beam is produced, the integral forming and the assembly difficulty are large, the small-sized hoisting equipment with the matched model is difficult to find in the installation process, the use cost of the ultra-large hoisting equipment is high, the alignment and the installation of the roof beam are difficult to control in the hoisting process, the problems of deformation and even installation accidents occur easily, the labor intensity is high, and the engineering efficiency is low. In addition, the processing and forming of steel members such as columns, beams, tie bars, sandal bars and the like are a great basic problem of ensuring smooth installation of a steel structure warehouse and high strength and service life after installation, but in the prior art, various defects easily occur in the processing process of the steel members, and various hidden dangers are brought to the warehouse structure.
Disclosure of Invention
The application provides a steel structure warehouse construction process to solve at least one of the technical problems.
The technical scheme adopted by the application is as follows:
a steel structure warehouse construction process comprises a steel member processing process and a warehouse installation process;
the steel member is processed by the following steps: respectively combining one or more of the processes of lofting, sizing, cutting, hole making, correction, polishing, splicing, assembling, friction surface treatment, welding, friction surface anti-slip test and the like of the steel member to form a manufactured wall column, a steel beam, a roof sandal strip, a wall sandal strip, a tie rod, an anchor bolt and a high-strength bolt;
the warehouse installation process at least comprises the following steps:
the installation site is divided into a plurality of installation axes which are sequentially arranged in parallel, a first wall column installation position, a second wall column installation position, a third wall column installation position and a fourth wall column installation position are sequentially arranged on each installation axis at intervals, the first wall column is hoisted to the first wall column installation position in any installation axis through hoisting equipment, the first wall column is corrected to the vertical direction, and a cable wind rope is pulled to temporarily fix the first wall column through anchor bolt fastening.
Installing a second wall column at a second wall column installation position, installing a third wall column at a third wall column installation position, installing a fourth wall column at a fourth wall column installation position, fastening all wall columns through foundation bolts, and then installing fixed wall columns at all wall column installation positions on each installation axis.
The method comprises the steps of erecting a horizontal jig frame on a hoisting site of a steel beam by using a steel split heads and sleepers, assembling the steel beam on the horizontal jig frame into roof beams corresponding to installation axes one by one through temporary bolts, wherein each roof beam comprises a first beam body, a second beam body and a third beam body which are arranged in a split mode, and then adjusting the overall dimension and geometric tolerance of each beam body to enable the length of the first beam body to be equal to the length of the third beam body and to be smaller than the length of the second beam body, and replacing the temporary bolts with high-strength bolts.
Two ends of a first beam body of each roof beam are respectively connected to the tops of a first wall column and a second wall column on corresponding installation axes through a hoisting device, and the first beam bodies on two adjacent installation axes are fixed through roof sandalwood bars and tie bars.
And the second beam body of each roof beam is sequentially hoisted to the tops of the second wall column and the third wall column of each installation axis through two parallel running hoisting equipment, the second beam body on the same installation axis is connected with the first beam body, and the second beam bodies on two adjacent installation axes are fixed through roof sandalwood strips and tie bars.
And hoisting the third beam body of each roof beam to the tops of the third wall column and the fourth wall column of each installation axis through hoisting equipment, connecting the third beam body on the same installation axis with the second beam body, and fixing the third beam bodies on two adjacent installation axes through roof sandalwood strips and tie bars.
Grouting the column feet of the wall columns at each wall column installation position, installing a roof board above the roof sandal strips to form a roof, connecting the wall sandal strips at the outer sides of the wall columns, and installing the wall board on the wall sandal strips to form a wall surface.
In the preferred scheme, when the temporary bolts are installed in the warehouse installation process, pointed-end prying bars and punching nails are used for enabling the bolts to freely extend into the screw holes, and the installation quantity of the temporary bolts is not less than one third of the quantity of the screw holes; before replacing the temporary bolts with high-strength bolts, fully casting the high-strength bolts in screw holes where the temporary bolts are not installed, and tightening the screw holes by using a wrench, and then replacing the temporary bolts with the high-strength bolts one by one and tightening the screw holes by using the wrench, wherein the installation directions of the high-strength bolts on the same connecting surface are consistent.
In a preferred scheme, the high-strength bolt is sequentially screwed through a primary screwing process and a final screwing process, wherein the torque value applied to the high-strength bolt in the primary screwing process is one half of the torque value applied to the high-strength bolt in the final screwing process, and the torque value applied to the high-strength bolt in the final screwing process is obtained by using k=t/(pc×d).
In a preferred scheme, the geometric dimension of each steel member is checked in the lofting process, the welding shrinkage, cutting, edge planing and milling allowance are added to the positioning mark on the template manufactured in the lofting process, the steel members are deformed and corrected by adopting a flame correction method before the lofting, and the flame heating temperature is between 650 and 750 ℃.
In the preferred scheme, in the cutting process, the surface of the steel member is cleaned before cutting, numerical control automatic cutting, semi-automatic cutting machine or manual cutting is adopted during cutting, the cutting surface is not required to be provided with gaps and cracks, and the blocky slag is required to be cleaned, and the groove is cut by adopting the semi-automatic cutting machine.
In the preferred scheme, in the hole making process, the screw holes of the high-strength bolts are drilled by adopting a sleeve template, the screw holes of the foundation bolts are drilled by adopting scribing, and the punching is arranged at the hole center and the hole periphery of the screw holes of the foundation bolts.
In the preferred scheme, in the welding process, grooves and welding beads are cleaned before welding, welding rods or welding wires which do not rust or deteriorate are used during welding, the welding rods or welding wires are dried in a drying box at 250 ℃ for 2 hours after welding, and then heat preservation is carried out at 80-100 ℃.
In a preferred scheme, during the friction surface treatment process, the surface of the steel member is cleaned by a sand blasting method so as to expose the silver gray smooth surface of the steel member, and then paint is coated on the surface of the steel member.
In the preferred scheme, in the manufacturing process of the wall column, the H-shaped web plate and the wing plate are cut in a numerical control mode, burrs are polished to be smooth after the rib plates and the connecting plates are cut, and the upper end and the lower end of the wall column are polished to be smooth and smooth by a grinder after being cut by a semi-automatic cutting machine.
In a preferred scheme, the steel structure warehouse construction process further comprises a scaffold construction process, wherein the scaffold construction process comprises the steps of sequentially installing a sweeping rod, a vertical rod, a horizontal rod, a scissor support, a jacking, a main keel, a plywood and a railing; wherein the vertical rod is made of steel pipes with the outer diameter of 48-51 mm, the wall thickness of 3-3.5 mm and the length of 4-6.5 m, and the horizontal rod is made of steel pipes with the outer diameter of 48-51 mm, the wall thickness of 3-3.5 mm and the length of 2.1-2.3 m.
Due to the adoption of the technical scheme, the technical effects obtained by the application are at least as follows:
in the steel structure warehouse construction process provided by the application:
firstly, when the wall column is installed, after the first wall column is lifted, initially adjusted and corrected, the foundation bolts are fastened and the cable is temporarily fixed, other wall columns are installed in place along the installation axis, compared with the mode that all the wall columns are lifted in place and then are respectively fastened and installed in most of the prior art, the first wall column is installed in place firstly and can become a standard for the installation of the subsequent wall column, the installation difficulty of the other wall columns is greatly reduced, the installation error generated after the installation of the wall column is reduced, the adjustment and correction process is simplified, and a solid foundation is laid for the wall column strength of the whole steel structure warehouse.
Secondly, set up horizontal bed-jig at the hoist and mount place, make the constitution design of roof beam accomplish on horizontal bed-jig, formed the process of hoist and mount again after the ground equipment, reduced high altitude installation node, reduce high altitude work load, help accelerating the installation progress, ensure installation quality. And set up every roof beam components of a whole that can function independently into first roof beam body, second roof beam body and third roof beam body, especially to the installation of large-span roof beam, divide into three sections roof beam body with large-span roof beam and install gradually for in the manufacturing process, the components of a whole that can function independently shaping is little with the equipment degree of difficulty, and the lifting device of adaptation model is found easily to the installation in-process, and the lifting cost reduces, and in the lifting process, the counterpoint of roof beam and installation control degree of difficulty reduce by a wide margin, the risk of deformation and installation accident reduces, low in labor strength helps improving engineering efficiency. And thirdly, the third Liang Tishi with larger installation length adopts two hoisting devices to drive simultaneously, so that the hoisting stability of the second beam body is ensured, and particularly when the second beam body is in an angular structure, the second beam body is not easy to shake up and down during hoisting, and the quick alignment and installation are convenient.
In addition, the manufacturing of the wall column, the manufacturing of the steel beam, the manufacturing of the roof sandalwood, the manufacturing of the wall sandalwood, the manufacturing of the tie bars, the manufacturing of the foundation bolts and the manufacturing of the high-strength bolts are performed in the whole set of processes of lofting, sizing, cutting, hole making, correction, polishing, splicing, pre-assembling, friction surface treatment, welding, friction surface anti-slip test and the like, so that the process required by forming is selected, each step is not lost or omitted, and the machining precision, the external dimension and the foundation of high-quality engineering of each steel member are further ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a flow chart of a steel structure warehouse construction process provided in an embodiment of the present application.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.
In this application, a steel structure warehouse construction process flow shown in fig. 1 is provided, and for convenience of explanation and understanding, the following descriptions are provided on the basis of the illustrated process. Of course, those skilled in the art will appreciate that the above-described process is only provided as a specific example and illustrative, and does not constitute a specific limitation on the technical solutions provided herein.
Specifically, the steel structure warehouse construction process comprises a steel member machining process and a warehouse installation process;
the steel member is processed by the following steps: and respectively combining one or more of the processes of lofting, sizing, cutting, hole making, correction, polishing, splicing, assembling, friction surface treatment, welding, friction surface anti-slip test and the like to form a manufactured wall column, a steel beam, a roof sandal strip, a wall sandal strip, a tie rod, an anchor bolt and a high-strength bolt.
In the construction process of the steel structure warehouse, the manufacturing process of the wall column and the steel beam has the advantages of maximum specific gravity, high complexity and long construction period in the manufacturing process of all steel components, and the manufacturing of the wall column and the steel beam basically needs all the processes of lofting, sizing, cutting, hole making, correction, polishing, splicing, assembling, friction surface treatment, welding, friction surface anti-slip test and the like. The main manufacturing process of the sandal wood strips and the tie bars is cutting and correcting. The manufacturing process of the foundation bolt and the high-strength bolt is hole making and friction surface treatment.
In addition, the manufacturing of the wall column, the manufacturing of the steel beam, the manufacturing of the roof sandalwood, the manufacturing of the wall sandalwood, the manufacturing of the tie bars, the manufacturing of the foundation bolts and the manufacturing of the high-strength bolts are performed in the whole set of processes of lofting, sizing, cutting, hole making, correction, polishing, splicing, pre-assembling, friction surface treatment, welding, friction surface anti-slip test and the like, so that the process required by forming is selected, each step is not lost or omitted, and the machining precision, the external dimension and the foundation of high-quality engineering of each steel member are further ensured.
In the steel structure warehouse construction process provided by the application, the main steel member materials (wall column and steel beam) are Q235B steel, and other supporting materials (sandal wood strips and tie bars) are Q345B steel. The high-strength bolt adopts a 10.9-grade large hexagon head bolt, the contact surface of the high-strength bolt adopts sand blasting treatment, the anti-slip coefficient is more than or equal to 0.5, and paint brushing or fouling cannot be performed. Common bolts outside the high-strength bolts, such as temporary bolts, foundation bolts and the like, are all C-level common bolts. In the case of manual welding, electrodes E4315 and E4316 are used for welding Q235B steel members. When automatic welding or semiautomatic welding is adopted, the Q345B steel materials are E5015 and E5016.
The geometric dimensions of each steel member are checked in the process of lofting and sizing, the assembly marks, screw hole marks, the position direction of the reinforcing plate, the inclination marks, the central line, the datum line and the inspection line are clearly marked, a template is manufactured if necessary, the welding shrinkage and the cutting, edge planing and milling allowance are additionally arranged on the positioning marks on the manufactured template, the steel members are deformed and corrected by adopting a flame correction method before sizing and marking, the flame heating temperature is between 650 and 750 ℃, the materials are taken according to the direction specified by the process during sizing, and the outside of the bending is free from foreign punching points and flaw defects.
In the cutting process, oil stains, rust and impurities on the surface of the steel member are cleaned before the steel member is cut, so that the cutting piece is kept clean and smooth, a numerical control automatic cutting machine, a semi-automatic cutting machine or a manual cutting machine is adopted during cutting, gaps and cracks on the cutting surface cannot be formed, massive slag is required to be cleaned, and the grooves are cut by the semi-automatic cutting machine. When automatic or semi-automatic cutting is adopted for cutting the wall column and the steel beam, the error is controlled within 1mm, and when manual cutting is adopted for sandal wood strips, tie bars and the like, the error is controlled within 2 mm.
In the hole making process, the screw holes of the high-strength bolts are drilled by adopting a sleeve template, the screw holes of the foundation bolts are drilled by adopting a scribing line, and punching is arranged at the hole center and the hole periphery of the screw holes of the foundation bolts so as to test the numerical value of the deviation center of the drilling hole, wherein the allowable deviation of the hole diameter is 0.5mm.
In the straightening and polishing process, a flange straightener or a seven-roller straightener and the like can be used for straightening the steel member, when the carbon alloy steel and the low alloy steel are heated and straightened, the temperature is not more than 900 ℃, and the low alloy steel is naturally cooled after being heated and straightened. The surface of the steel member after correction should not have obvious concave surfaces or damages, the scratch depth should not be more than 0.5mm, and the negative allowable deviation of the thickness of the steel member should not be more than half. In addition, it is necessary to grind chamfers on all free corners of the steel member.
In the splicing process, all materials are spliced by equal strength, and the splicing point is selected at the position with smaller stress.
In the assembly process, the secondary parts are assembled after the primary parts are assembled by wires, the middle is firstly, then the two ends are firstly, transversely and longitudinally arranged, and internally and externally arranged so as to reduce deformation.
In the friction surface treatment and friction surface anti-slip experiment process, firstly, the iron rust, loose dust, greasy dirt and other harmful attachments on the surface of a steel member are cleaned by a sand blasting method, so that the steel member is exposed out of the silver gray smooth surface, the rust removal quality grade is Sa2.5, then paint is coated on the surface of the steel member, the environment temperature is preferably 5-38 ℃, the relative humidity is less than or equal to 85%, when the surface of the member has dew, the paint cannot be coated, the rain cannot be sprayed 4 hours after the paint is coated, visual inspection coating is uniform, fine, no obvious color difference, no sagging, no light loss, wrinkling, pinholes, bubbles, cracks, falling, dirt adhesion, missing coating and the like, and the adhesion is required to be good. The steel members are not dried after being coated, and cannot be bundled and stacked together, so that the coating is prevented from being damaged. The coefficient of slip resistance should be 0.5.
In the welding process, rust, greasy dirt and various impurities near the groove and the weld bead of 30-50mm should be cleaned before welding. During welding, welding rods or welding wires which do not rust or deteriorate are used, after welding, the welding rods or welding wires are dried in a drying box at 250 ℃ for 2 hours, and then heat preservation is carried out at 80-100 ℃. The welding of the accessory is carbon dioxide gas shielded welding, the specification is phi 1.2, the current is 180-200A, the voltage is 20-22V, the welding speed is 35-45cm/min, the extension length is 12mm, and the gas flow is 15L/min. When the wind speed of manual arc welding exceeds 8m/s, gas shielded welding and flux-cored arc welding exceeds 2m/s, a wind discharging shed or other wind prevention measures are arranged in the welding operation area.
In the manufacturing process of the wall column, the H-shaped web plates and the wing plates are cut in a numerical control mode, burrs are polished to be smooth after the rib plates and the connecting plates are cut, and the upper end and the lower end of the wall column are polished to be smooth and smooth by a grinder after being cut by a semi-automatic cutting machine. When the H-shaped steel is combined, the welding part of the three plates at the joint of the wing plates is polished to be 30-50mm wide, then the center line can be drawn, and the three plates are combined and connected into the H-shaped steel.
In the manufacturing process of the steel beam, all high-strength bolt connecting plates can be assembled after being checked piece by piece before being assembled, and the assembled connecting plates can be welded after being confirmed by full-time inspectors. After the steel beam sections are welded with the connecting plates, all the connecting plates must be leveled, and meanwhile, the whole correction is performed.
During the manufacture of the sandalwood strips and tie bars, all the profile steel must be straightened and the bending profile is never allowed to be mixed. The insufficient length of the inter-column support is welded by double-sided binding strips, and the welding length is not less than 5 times of the diameter.
In a preferred embodiment, the warehouse installation process includes at least the steps of:
s1: the installation site is divided into a plurality of installation axes which are sequentially arranged in parallel, a first wall column installation position, a second wall column installation position, a third wall column installation position and a fourth wall column installation position are sequentially arranged on each installation axis at intervals, the first wall column is hoisted to the first wall column installation position in any installation axis through hoisting equipment, the first wall column is corrected to the vertical direction, and a cable wind rope is pulled to temporarily fix the first wall column through anchor bolt fastening.
S2: installing a second wall column at a second wall column installation position, installing a third wall column at a third wall column installation position, installing a fourth wall column at a fourth wall column installation position, fastening all wall columns through foundation bolts, and then installing fixed wall columns at all wall column installation positions on each installation axis.
S3: the method comprises the steps of erecting a horizontal jig frame on a hoisting site of a steel beam by using a steel split heads and sleepers, assembling the steel beam on the horizontal jig frame into roof beams corresponding to installation axes one by one through temporary bolts, wherein each roof beam comprises a first beam body, a second beam body and a third beam body which are arranged in a split mode, and then adjusting the overall dimension and geometric tolerance of each beam body to enable the length of the first beam body to be equal to the length of the third beam body and to be smaller than the length of the second beam body, and replacing the temporary bolts with high-strength bolts.
S4: two ends of a first beam body of each roof beam are respectively connected to the tops of a first wall column and a second wall column on corresponding installation axes through a hoisting device, and the first beam bodies on two adjacent installation axes are fixed through roof sandalwood bars and tie bars.
S5: and the second beam body of each roof beam is sequentially hoisted to the tops of the second wall column and the third wall column of each installation axis through two parallel running hoisting equipment, the second beam body on the same installation axis is connected with the first beam body, and the second beam bodies on two adjacent installation axes are fixed through roof sandalwood strips and tie bars.
S6: and hoisting the third beam body of each roof beam to the tops of the third wall column and the fourth wall column of each installation axis through hoisting equipment, connecting the third beam body on the same installation axis with the second beam body, and fixing the third beam bodies on two adjacent installation axes through roof sandalwood strips and tie bars.
S7: grouting the column feet of the wall columns at each wall column installation position, installing a roof board above the roof sandal strips to form a roof, connecting the wall sandal strips at the outer sides of the wall columns, and installing the wall board on the wall sandal strips to form a wall surface.
Of course, in other alternative embodiments, some of the steps may be replaced, for example, the installation of roof panels and wall panels may be completed prior to the toe grouting.
Firstly, when the wall column is installed, after the first wall column is lifted, initially adjusted and corrected, the foundation bolts are fastened and the cable is temporarily fixed, other wall columns are installed in place along the installation axis, compared with the mode that all the wall columns are lifted in place and then are respectively fastened and installed in most of the prior art, the first wall column is installed in place firstly and can become a standard for the installation of the subsequent wall column, the installation difficulty of the other wall columns is greatly reduced, the installation error generated after the installation of the wall column is reduced, the adjustment and correction process is simplified, and a solid foundation is laid for the wall column strength of the whole steel structure warehouse. .
Secondly, set up horizontal bed-jig at the hoist and mount place, make the constitution design of roof beam accomplish on horizontal bed-jig, formed the process of hoist and mount again after the ground equipment, reduced high altitude installation node, reduce high altitude work load, help accelerating the installation progress, ensure installation quality. And set up every beam split into first roof beam body, second roof beam body and third roof beam body, especially to the installation of large-span roof beam, divide into three sections roof beam body with large-span roof beam and install gradually for in the manufacturing process, the split shaping is little with the equipment degree of difficulty, the lifting device of adaptation model is found easily in the installation, the lifting cost reduces, and in the lifting process, the counterpoint of roof beam and installation control degree of difficulty reduce by a wide margin, the risk of deformation and installation accident appears reduces, low in labor strength helps improving engineering efficiency. And thirdly, the third Liang Tishi with larger installation length adopts two hoisting devices to drive simultaneously, so that the hoisting stability of the second beam body is ensured, and particularly when the second beam body is in an angular structure, the second beam body is not easy to shake up and down during hoisting, and the quick alignment and installation are convenient.
In the assembling process of the roof beam, when the temporary bolts are installed, the pointed pry bar and the punching nails are used for enabling the bolts to freely extend into the screw holes, and the installation quantity of the temporary bolts is not less than one third of the quantity of the screw holes; before replacing the temporary bolts with high-strength bolts, fully casting the high-strength bolts in screw holes where the temporary bolts are not installed, and tightening the screw holes by using a wrench, and then replacing the temporary bolts with the high-strength bolts one by one and tightening the screw holes by using the wrench, wherein the installation directions of the high-strength bolts on the same connecting surface are consistent.
The high-strength bolt is sequentially screwed by a primary screwing process and a final screwing process, wherein the torque value applied to the high-strength bolt in the primary screwing process is half of the torque value applied to the high-strength bolt in the final screwing process, and the torque value applied to the high-strength bolt in the final screwing process is obtained by using K=T/(Pc×d). Wherein: t is a final screwing torque value, K is a torque coefficient, d is a nominal diameter of a bolt, and Pc is a construction pretension value standard value.
Taking 90m of the span position of each roof beam as an example, in the installation process, the lengths of the first beam body and the third beam body which are arranged in a split mode can be 26.5m, the length of the second beam body is 37m, and the first beam body, the second beam body and the third beam body are respectively composed of three steel beams. A first beam body is hoisted by a 20T automobile crane, the first beam body is hoisted to the upper part of a first wall column and a second wall column which are positioned at the most end part of an installation site, the two ends of the first beam body are respectively connected with the first wall column and the second wall column through high-strength bolts, then the first beam body of another roof beam is hoisted continuously, the first beam body is hoisted and connected to the first wall column and the second wall column of the adjacent installation axis, then the two first beam bodies on the two installation axes are connected through a tie bar and a roof sandal wood strip, of course, corresponding corner braces can be arranged on the tie bar, then the first beam bodies of the rest roof beams are sequentially installed on the rest installation axes respectively, and after each first beam body is installed, the first beam body and the former first beam body are connected with each other through the tie bar so that the first beam body has a stable space structure.
It should be noted that the number of installation axes divided at the installation sites is not limited in the application, and installation sites with different sizes can be divided into a proper number of installation axes according to the actual length construction requirement of the steel structure warehouse.
After the first beam bodies of all roof beams are installed, two automobile cranes 25T and 12T can be selected to advance side by side, the second beam bodies of all roof beams are installed on the second wall column and the third wall column on each installation axis in a aligned mode along all installation axes in sequence, and each second beam body is installed and is connected with the first beam body of the coaxial line and the second beam body on the adjacent installation axis.
And installing a third beam body after installing the second beam bodies of all roof beams in place, hoisting by adopting a 20T automobile crane, and completing the installation of the third beam body by referring to the installation mode of the second beam body to form a stable warehouse frame structure consisting of wall posts, roof beams, roof sandal strips and tie bars.
Then grouting the column feet of each wall column, cleaning the concrete surface of the column feet before grouting, and then using 1:1 cement slurry wets the surface. After the post is installed and adjusted and the grouting is carried out again, the nut backing plate and the post bottom plate are firmly welded, and the nuts are spot welded to prevent loosening.
And finally, installing the roof board and the wall panel, paying off the roof beam of the roof board in advance before installing the roof board, and tensioning, wherein the line is used as a datum line of the roof board so as to prevent the roof board from being askew during installation. When the roof board is installed, the fastening screw is installed on the wave crest of the color steel plate. When the self-tapping screw on the roof board is installed, a special tool is used, the screw is vertical to the color steel profiled plate during installation, and after the installation is completed, the rain-proof glue is installed.
As a preferred embodiment, the steel structure warehouse construction process further comprises a scaffold construction process, and when the construction height of the wall column, the roof beam and the like exceeds 2 meters, the scaffold construction must be erected. The scaffold is constructed by sequentially installing a ground rod, a vertical rod, a horizontal rod, a scissor support, a jacking, a main keel, a wood splint and a railing.
Wherein the vertical rod is made of steel pipes with the outer diameter of 48-51 mm, the wall thickness of 3-3.5 mm and the length of 4-6.5 m, and the horizontal rod is made of steel pipes with the outer diameter of 48-51 mm, the wall thickness of 3-3.5 mm and the length of 2.1-2.3 m.
The non-mentioned places in the application can be realized by adopting or referring to the prior art.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. The steel structure warehouse construction process is characterized by comprising a steel member machining process and a warehouse installation process;
the steel member is processed by the following steps: respectively manufacturing a wall column, a steel beam, a roof sandal strip, a wall sandal strip, a tie rod, an anchor bolt and a high-strength bolt by combining one or more of the processes of lofting, sizing, cutting, hole making, correction, polishing, splicing, assembling, friction surface treatment, welding, friction surface anti-slip test and the like;
the warehouse installation process at least comprises the following steps:
dividing the installation site into a plurality of installation axes which are sequentially arranged in parallel, sequentially arranging a first wall column installation position, a second wall column installation position, a third wall column installation position and a fourth wall column installation position at intervals on each installation axis, hoisting the first wall column to the first wall column installation position in any installation axis through hoisting equipment, correcting the first wall column to the vertical direction, fastening the first wall column through foundation bolts, and pulling a cable wind rope to temporarily fix the first wall column;
sequentially installing a second wall column at a second wall column installation position, installing a third wall column at a third wall column installation position, installing a fourth wall column at a fourth wall column installation position, fastening all wall columns through foundation bolts, and then installing fixed wall columns at all wall column installation positions on each installation axis;
setting up a horizontal jig frame on a hoisting site of a steel beam by using a steel split heads and sleepers, firstly assembling the steel beam into roof beams corresponding to the installation axes one by one on the horizontal jig frame through temporary bolts, wherein each roof beam comprises a first beam body, a second beam body and a third beam body which are arranged in a split manner, then adjusting the overall dimension and the geometric tolerance of each beam body to ensure that the length of the first beam body is equal to the length of the third beam body and is smaller than the length of the second beam body, and completely replacing the temporary bolts with high-strength bolts;
two ends of a first beam body of each roof beam are respectively connected to the tops of a first wall column and a second wall column on corresponding installation axes through a hoisting device, and the first beam bodies on two adjacent installation axes are fixed through roof sandalwood strips and tie bars;
the second beam body of each roof beam is sequentially hoisted to the tops of the second wall column and the third wall column of each installation axis through two parallel running hoisting equipment, the second beam body on the same installation axis is connected with the first beam body, and the second beam bodies on two adjacent installation axes are fixed through roof sandalwood strips and tie bars;
hoisting a third beam body of each roof beam to the tops of a third wall column and a fourth wall column of each installation axis through hoisting equipment, connecting the third beam body on the same installation axis with the second beam body, and fixing the third beam bodies on two adjacent installation axes through roof sandalwood strips and tie bars;
grouting the column feet of the wall columns at each wall column installation position, installing a roof board above the roof sandal strips to form a roof, connecting the wall sandal strips at the outer sides of the wall columns, and installing the wall board on the wall sandal strips to form a wall surface.
2. The steel structure warehouse construction process according to claim 1, wherein,
in the warehouse installation process, when the temporary bolts are installed, pointed-end prying bars and punching nails are used for enabling the bolts to freely extend into the screw holes, and the installation quantity of the temporary bolts is not less than one third of the quantity of the screw holes;
before replacing the temporary bolts with high-strength bolts, fully casting the high-strength bolts in screw holes where the temporary bolts are not installed, and tightening the screw holes by using a wrench, and then replacing the temporary bolts with the high-strength bolts one by one and tightening the screw holes by using the wrench, wherein the installation directions of the high-strength bolts on the same connecting surface are consistent.
3. The steel structure warehouse construction process according to claim 2, wherein,
the high-strength bolt is sequentially screwed by a primary screwing process and a final screwing process, wherein the torque value applied to the high-strength bolt in the primary screwing process is half of the torque value applied to the high-strength bolt in the final screwing process, and the torque value applied to the high-strength bolt in the final screwing process is obtained by using K=T/(Pc×d).
4. The steel structure warehouse construction process according to claim 1, wherein,
and checking the geometric dimension of each steel member in the lofting process, wherein the positioning mark on the template manufactured in the lofting process is required to be added with welding shrinkage, cutting, edge planing and milling allowance, and the steel member is required to be deformed and corrected by adopting a flame correction method before sizing, wherein the flame heating temperature is between 650 and 750 ℃.
5. The steel structure warehouse construction process according to claim 1, wherein,
in the cutting process, the surface of the steel member is cleaned before cutting, numerical control automatic cutting, semi-automatic cutting machine or manual cutting is adopted during cutting, gaps and cracks on the cutting surface are avoided, massive slag is required to be cleaned, and the groove is cut by gas of the semi-automatic cutting machine.
6. The steel structure warehouse construction process according to claim 1, wherein,
in the hole making process, the screw holes of the high-strength bolts are drilled by adopting a sleeve template, the screw holes of the foundation bolts are drilled by adopting scribing, and punching is arranged at the hole center and the hole periphery of the screw holes of the foundation bolts.
7. The steel structure warehouse construction process according to claim 1, wherein,
in the welding process, grooves and welding beads are cleaned before welding, welding rods or welding wires which do not rust or deteriorate are used during welding, the welding rods or welding wires are dried in a drying box at 250 ℃ for 2 hours after welding, and then heat preservation is carried out at 80-100 ℃.
8. The steel structure warehouse construction process according to claim 1, wherein,
in the friction surface treatment process, firstly, the surface of the steel member is cleaned by a sand blasting method so as to enable the steel member to expose a silver gray smooth surface, and then paint is coated on the surface of the steel member.
9. The steel structure warehouse construction process according to claim 1, wherein,
in the manufacturing process of the wall column, the H-shaped web plates and the wing plates are cut in a numerical control mode, burrs are polished to be smooth after the rib plates and the connecting plates are cut, and the upper end and the lower end of the wall column are polished to be smooth and smooth by a grinder after being cut by a semi-automatic cutting machine.
10. The steel structure warehouse construction process according to claim 1, wherein,
the construction process of the steel structure warehouse further comprises a scaffold building process, wherein the scaffold building process comprises the steps of sequentially installing a sweeping rod, a vertical rod, a horizontal rod, a scissor support, a jacking, a main keel, a wood splint and a railing;
wherein the vertical rod is made of steel pipes with the outer diameter of 48-51 mm, the wall thickness of 3-3.5 mm and the length of 4-6.5 m, and the horizontal rod is made of steel pipes with the outer diameter of 48-51 mm, the wall thickness of 3-3.5 mm and the length of 2.1-2.3 m.
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