CN111790995A - Construction process for welding steel beam - Google Patents
Construction process for welding steel beam Download PDFInfo
- Publication number
- CN111790995A CN111790995A CN202010416280.XA CN202010416280A CN111790995A CN 111790995 A CN111790995 A CN 111790995A CN 202010416280 A CN202010416280 A CN 202010416280A CN 111790995 A CN111790995 A CN 111790995A
- Authority
- CN
- China
- Prior art keywords
- plates
- plate
- welding
- web
- shaped rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention relates to a construction process for welding a steel beam, which relates to the field of bridge construction, and mainly comprises the following steps: building a mould, positioning a top plate, positioning and welding a partition plate, positioning and welding a middle web plate, positioning and welding a lower strip-shaped rib plate, fixedly welding a web plate vertical stiffening rib, positioning and welding a side web plate, positioning and welding a sealing plate, positioning and fixing an upper strip-shaped rib plate, positioning and preliminarily fixing a bottom plate, overturning a beam body, welding the bottom plate and cutting a lifting lug; the steel beam is turned over through the steps, so that the welding state of workers is simplified, the welding difficulty is reduced, and the welding efficiency is accelerated.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a construction process for welding a steel beam.
Background
A bridge body steel beam is manufactured by a steel structure to form a beam body as the name implies. Existing bridge steel beams cover "cap beams" and "box beams". The capping beam refers to a cross beam provided on the top of the bent pier to support, distribute and transfer the load of the superstructure. Also known as a hat beam. The bridge pier (platform) or the row pile is provided with a beam made of reinforced concrete or less reinforced concrete. The main function is to support the bridge superstructure and transfer all loads to the substructure. The bridge piles are directly connected with the bent cap, and the bridge piles are connected with the upright posts and then connected with the bent cap. The steel box girder is also called steel plate box girder, and is a common structural form of a large-span bridge. Generally used on bridges with large span. The outer shape is like a box and is called a steel box girder.
Existing bridge steel beams include a bottom plate; a plurality of partition plates arranged on the upper surface of the bottom plate; a top plate is arranged on the clapboard; a plurality of strip-shaped rib plates are arranged between the bottom plate and the partition plate and between the top plate and the partition plate; a middle web plate is also arranged in the bottom plate; two side web plates and two sealing plates are oppositely arranged around the bottom plate and the top plate.
When the staff is welding between bottom plate and the baffle, the staff need enter into inside the girder steel, weld between baffle and the roof on the back, because work load is big, at the welded in-process, because the personnel is in on the back always and welds the state, inconvenient operation, welding efficiency is low, and the welding slag in the welding process very easily drops on the health moreover, causes the potential safety hazard easily.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction process for welding a steel beam, which has the advantages of reducing the difficulty of welding operation of workers and indirectly improving the welding efficiency.
The technical purpose of the invention is realized by the following technical scheme:
step 1: erecting a mould, selecting a flat ground, and erecting a plurality of moulds for erecting the steel beam on the ground at intervals; step 2: positioning a top plate, namely placing the top plate on the plurality of clamping tools in the step 1, and keeping the welding surface of the top plate facing upwards; and step 3: positioning and welding the partition plates, namely placing the partition plates on the upper surface of the top plate at intervals, determining the fixed position of each partition plate, and then welding the joint of the partition plates and the top plate; and 4, step 4: the middle web plate is positioned and welded, the middle web plate is placed in the middle area of the top plate along the length direction of the top plate, the middle web plate and all the partition plates are fixedly inserted, and finally the joint of the middle web plate and the top plate and the insertion position of the middle web plate and the partition plates are welded; and 5: the lower strip-shaped rib plates are welded in a positioning mode, workers hang the lower strip-shaped rib plates at the end portions of the steel beams and insert the lower strip-shaped rib plates into the sockets at the positions, attached to the top plates, of the partition plates, so that the lower strip-shaped rib plates are mutually inserted into the partitions, then the end faces of all the lower strip-shaped rib plates are determined to be mutually flush, and finally the lower strip-shaped rib plates are welded at the positions, attached to the top plates, of the lower strip-shaped rib plates and; step 6: positioning and welding the edge webs, sequentially putting the two edge webs on the edges of the two sides of the upper surface of the top plate by a worker, then mutually attaching the edge webs and the partition plates, making the side walls of the edge webs positioned at the end parts of the steel beams flush with the corresponding side walls of the bottom plate, and finally manually welding and fixing the attached parts of the edge webs and the partition plates and the joint parts of the edge webs and the bottom plate; and 7: the sealing plates are welded in a positioning mode, workers hoist the sealing plates at the end portions of the steel beams, then the sealing plates are placed at the edges of the upper surfaces of the top plates, then the edges of the sealing plates are attached to the inner walls of the two side web plates, the sealing plates and the lower strip-shaped rib plates are attached to each other, and finally the bonding positions of the sealing plates and the side web plates, the bonding positions of the sealing plates and the lower strip-shaped rib plates and the bonding positions of the sealing plates and the top plates are welded and fixed manually; and 8: the upper strip-shaped rib plates are fixedly positioned, workers hang the upper strip-shaped rib plates at the opening above the steel beam, the upper strip-shaped rib plates are located at the inserting openings of the partition plates, the upper strip-shaped rib plates are inserted into the partition plates, two ends of each strip-shaped rib plate are abutted against the inner walls of the sealing plates on two sides, and finally, the inserting positions of the upper strip-shaped rib plates and the inserting plates and the abutting positions of the upper strip-shaped rib plates and the sealing plates are welded and fixed manually; and step 9: the bottom plate is initially fixed in a positioning mode, workers hang the bottom plate above the steel beam, place the bottom plate on the upper strip-shaped rib plate, enable the placement position of the bottom plate to correspond to the top plate, enter the steel beam, and perform initial welding and fixing on the bottom plate and the web plate, the bottom plate and the upper strip-shaped rib plate, the bottom plate and the partition plate, and the bottom plate and the sealing plate through spot welding; step 10: the roof beam body upset welding has a plurality of lug at both sides limit web lateral wall rigid coupling, then the staff establishes the upset that realizes the girder steel through hanging of crane to the lug, makes the bottom plate be located the below of roof, then the staff enters into the inside of girder steel and carries out welded fastening to bottom plate and web, bottom plate and last bar floor, bottom plate and baffle to and bottom plate and shrouding unwelded region.
By adopting the technical scheme, in the process of positioning and welding the bottom plate, the partition plate, the middle web plate, the lower strip-shaped rib plate, the side web plate, the sealing plate and the upper strip-shaped rib plate in sequence by workers, the welding workload is large, a flat welding mode is adopted, the welding angle is comfortable, the welding quality can be guaranteed, the welding efficiency is indirectly improved, the bottom plate is positioned at the topmost part of the steel beam, if the workers directly weld, the workers need to adopt an overhead welding mode, the welding workload is large, the hands lack stable supports, the welding quality cannot be guaranteed, welding slag falls off from the top part, and potential safety hazards to the workers are easily caused; after the steel beam is turned to the lower part, the welding point on the bottom plate is located at the bottom, so that the welding personnel can weld in the steel beam conveniently, the welding personnel are in a habitual welding mode, the welding quality is guaranteed, and the welding efficiency is improved.
The present invention in a preferred example may be further configured to: adding a step before the step 6: the fixed welding of the vertical stiffening rib of web, the staff places the edge web subaerial, then confirms the welding position of the vertical stiffening rib of web, places the vertical stiffening rib of web at corresponding welding position, is in the same place the vertical stiffening rib of web and web welding.
By adopting the technical scheme, workers weld the web vertical stiffening ribs before the side webs and the partition plates are welded and fixed, the welding conditions are wide, the welding convenience is improved, and the welding quality is easy to control; if weld in the girder steel is inside, the welding space is comparatively narrow and small, and the air does not circulate, is unfavorable for staff's long-term work.
The present invention in a preferred example may be further configured to: welding of support dog, the mounted position of support dog is confirmed at the top of girder steel to the staff, then hangs the support dog and establishes on the roof, then the manual work is with the welding of support dog in the position that corresponds.
Through adopting above-mentioned technical scheme, after the girder steel upset, the fixed upper surface that is located the bottom plate of support dog, the staff of being convenient for is located the top of bottom plate and welds the support dog, has reduced the welding degree of difficulty.
The present invention in a preferred example may be further configured to: in the step 10, the lifting lugs on the two sides are symmetrically arranged, and a plurality of lifting lugs are uniformly arranged along the length direction of the edge web plate.
Through adopting above-mentioned technical scheme, the lug is fixed in the middle part region of side web for the lug hangs the in-process of establishing, and the girder steel atress is more stable, and the staff of being convenient for carries out the adjustment of angle to the girder steel.
The present invention in a preferred example may be further configured to: the worker hooks the grapple of one crane with the lifting lugs on the web plate on one side and hooks the grapple of the other crane with the lifting lugs on the web plate on the other side; the two cranes pull the grapple at the same speed to separate the steel beam from the support of the clamping fixture and leave a steel beam turning space below the steel beam; the crane hooked on the lifting lug at the bottom slowly loosens the rope, so that the steel beam slowly rotates by 90 degrees, the crane hooked on the lifting lug at the upper part is kept still, the grabbing hook hooked at the bottom is separated from the lifting lug, the grabbing hook of one crane hooks the lifting lug at the bottom in the opposite direction, then the rope is tightened, the steel beam continues to rotate, the steel beam is turned over by 180 degrees, finally the two cranes place the steel beam at the same speed, and the steel beam is placed on a plurality of pier studs.
By adopting the technical scheme, the safety of the steel beam overturning process is guaranteed, and the steel beam is overturned at 90 degrees, so that the steel beam rotates more slowly; in addition, the time waste in the moving process of the crane 2 is reduced by adopting a mode of matching 3 cranes, so that the efficiency of turning over the steel beam is improved, and if the crane 2 is moved, the safety risk brought in the moving process is increased; and finally, the pier stud is adopted to support the steel beam, the contact area is small, the support damage to the structure on the steel beam can be reduced, the abrasion of the steel beam in the drifting process is reduced, and the appearance of the steel beam is indirectly protected.
The present invention in a preferred example may be further configured to: in step 10, a step is added: and cutting the lifting lugs, wherein the lifting lugs protruding out of the two sides of the side web plate are cut by workers.
Through adopting above-mentioned technical scheme, cut the lug, when lightening the whole weight of girder steel, still reduced the lug and collided with the risk of all ring edge borders in hoist and mount in-process, cut the lug moreover and still improved the holistic aesthetic property of girder steel.
In conclusion, the invention has the following beneficial effects:
the welding difficulty of workers is reduced, the bottom plate is positioned below the top plate in a mode of overturning the steel beam, so that the workers can conveniently weld the joint of the bottom plate in a conventional flat welding mode, the welding difficulty is small, and the welding quality is easy to grasp;
and secondly, the steel beam overturning efficiency is improved, and the time waste in the moving process of the crane 2 is reduced by adopting a mode of matching three cranes and two cranes, so that the efficiency of overturning the steel beam is improved.
Drawings
FIG. 1 is a general flow chart of the welding of steel beams;
FIG. 2 is a schematic diagram showing step 1;
FIG. 3 is a schematic diagram showing step 2;
FIG. 4 is a schematic diagram showing step 3;
FIG. 5 is a schematic diagram showing step 4;
FIG. 6 is a schematic diagram showing step 5;
FIG. 7 is a schematic diagram showing step 7;
FIG. 8 is a schematic diagram showing step 8;
FIG. 9 is a schematic representation embodying step 9;
FIG. 10 is a schematic diagram showing step 10;
FIG. 11 is a schematic view showing a state after welding of a lifting lug;
FIG. 12 is a diagram illustrating a state after the operation of step 11;
FIG. 13 is a schematic diagram showing step 14.
In the figure, 1, a clamping fixture; 21. a top plate; 22. a partition plate; 23. a middle web plate; 24. a lower strip-shaped rib plate; 26. A vertical stiffener; 28. closing the plate; 29. winding a strip-shaped rib plate; 3. a base plate; 4. lifting lugs; 5. a support stop block; 6. and (5) pier studs.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A construction process for welding steel beams is shown in figure 1, and comprises the following steps:
step 1: setting up a mould, as shown in fig. 2, selecting a flat assembly field, and erecting a plurality of moulds 1 for erecting steel beams on the ground at intervals; the building mould 1 adopts a steel plate with the thickness of 20mm as a base, and the upright posts and the cross arms adopt 14B # channel steel.
Step 2: the top plate is positioned, as shown in fig. 3, an operator determines the size of the top plate 21 according to the design requirement of the steel beam, welds the top plate 21 into the size required by the top plate 21 through a plurality of steel plates, then hangs the top plate 21 above the clamping fixture 1 through the assistance of a crane, enables the top plate 21 to be stably supported on the plurality of clamping fixtures 1, and keeps the welding surface of the top plate 21 facing upwards, thereby ensuring the balance of stress of the top plate 21, and leaving an operation space for the operator below the clamping fixture 1.
And step 3: positioning and welding the partition boards, as shown in fig. 4, marking the specific fixed position of each partition board 22 on the upper surface of the top plate 21 by an operator according to the design requirement, then hanging a plurality of partition boards 22 at the specific welding position by the aid of a crane, and finally, manually and comprehensively welding the contact surfaces of the partition boards 22 and the top plate 21; because the staff mainly stands on the upper surface of roof 21 and carries out welding work, the solder joint is mainly located the bottom region, and the staff of being convenient for adopts the mode of flat welding to weld, the operation of being convenient for.
And 4, step 4: the middle web plate is welded in a positioning mode, as shown in fig. 5, the middle web plate 23 is located in the middle area of the steel beam in the length direction, the partition plates 22 are divided into solid partition plates 22 and middle partition plates 22, and in order to guarantee the insertion state of the middle web plate 23 and each partition plate 22, the middle web plate 23 is formed by splicing a plurality of steel plates; the middle web plate 23 is positioned to a designated position through the assistance of a crane, and then the splicing position of the middle web plate 23 and the partition plate 22, the joint position of the middle web plate 23 and the top plate 21 and the splicing position of the middle web plate 23 and the middle web plate 23 are welded manually; the welding area is mainly located in the middle and the bottom area, so that the flat welding mode is convenient to weld, the operation is more customary, and the welding quality is guaranteed.
And 5: the lower strip-shaped rib plates are welded in a positioning mode, as shown in fig. 6, a plurality of lower strip-shaped rib plates 24 are arranged, workers are hung through the aid of a crane, the lower strip-shaped rib plates 24 are inserted into the steel beam from two ends of the steel beam, the lower strip-shaped rib plates 24 are inserted into the partition plates 22, then the position of each lower strip-shaped rib plate 24 is adjusted, two ends of each lower strip-shaped rib plate 24 are flush with two ends of the middle web plate 23, and finally the workers attach the lower strip-shaped rib plates 24 to the top plate 21, and the lower strip-shaped rib plates 24 are welded with the partition plates 22; the welding position of lower bar floor 24 and roof 21 is mainly located the bottom region, and the staff of being convenient for adopts the flat welding mode to weld, and the operation is comparatively customary, and welding quality ensures to some extent.
Step 6: fixedly welding the web vertical stiffening ribs, welding a plurality of steel plates into the specified size of the side web 25 by workers according to design requirements, then placing the side web 25 on the ground, marking the fixed position of the web vertical stiffening rib 26 according to the design requirements, then placing the web vertical stiffening rib 26 at the marked position, and manually and comprehensively welding the joint where the web vertical stiffening rib 26 is attached to the side web 25; because the vertical stiffening rib 26 of kickboard welds in spacious region and edge web 25, not only the activity space is big, and the air is comparatively circulated moreover, and the flue gas that produces among the welding process can in time drift about, has reduced the influence to personnel.
And 7: and (3) performing positioning welding on the side webs, as shown in fig. 7, sequentially putting the two side webs 25 obtained after the step 6 on the two side edges of the top plate 21 by an operator through the aid of a crane, then keeping the crane in a hanging state, mutually attaching the side webs 25 and the partition plates 22, determining a fixing position, preliminarily fixing the side webs 25 and the partition plates 22 by multi-spot welding by the operator, then separating from the support of the crane, and performing comprehensive welding and fixing on the attaching positions of the side webs 25 and the partition plates 22 and the joints of the side webs 25 and the bottom plate 3 by the operator.
And 8: the seal plates are welded in a positioning mode, as shown in fig. 8, an operator hoists the seal plates 28 at two end portions of the steel beam, then puts the seal plates 28 at the edge of the upper surface of the top plate 21, enables the edges of the seal plates 28 to be attached to the inner walls of the two side web plates 25, enables the seal plates 28 and the strip-shaped rib plates to be attached to each other, keeps a crane to hoist the seal plates 28, and then manually welds the seal plates 28 and the side web plates 25 in a multi-point welding mode; then the support of the closing plate 28 by the crane is removed, and finally, the joint of the closing plate 28 and the side web plate 25, the joint of the closing plate 28 and the lower rib plate 24 and the joint of the closing plate 28 and the top plate 21 are welded and fixed comprehensively.
And step 9: the upper strip-shaped rib plates are positioned and fixed, as shown in fig. 9, the upper strip-shaped rib plates 29 are positioned and fixed, a worker hangs the upper strip-shaped rib plates 29 at the opening above the steel beam, so that the upper strip-shaped rib plates 29 are positioned at the inserting openings of the partition plates 22, the upper strip-shaped rib plates 29 are inserted into the partition plates 22, two ends of the upper strip-shaped rib plates 29 are abutted against the inner walls of the sealing plates 28 at two sides, and finally, the inserting positions of the upper strip-shaped rib plates 29 and the inserting plates and the abutting positions of the upper strip-shaped rib plates 29 and the sealing plates 28 are welded and fixed manually; the staff scrambles in the top of baffle 22 to the guarantee is in the open position welding state to the welding of last bar floor 29, and the operation is comparatively customary, and welding quality ensures to some extent, and the welding slag that the welding dropped can not drop on one's body in addition, has reduced the potential safety hazard.
Step 10: the bottom plate location is preliminary fixed, as shown in fig. 10, bottom plate 3 is provided with a plurality of, the staff hangs bottom plate 3 through the crane and establishes in the girder steel top, then the staff places bottom plate 3 in the welded corresponding position according to the design demand, then the staff carries out preliminary welding position between bottom plate 3 and two limit webs 25 through the mode of multiple spot welding, bottom plate 3 and shrouding 28, bottom plate 3 and baffle 22, and bottom plate 3 and last bar rib plate 29, in order to ensure the steel box girder at the upset in-process, bottom plate 3 can not drop, so that subsequent weldment work.
Step 11: turning over the beam body, as shown in fig. 11 and 12, firstly welding a plurality of lifting lugs 4 in the middle area of the web plates 25 on the two sides by a worker, symmetrically arranging the two lifting lugs 4, then hooking the lifting lug 4 of the web plate 25 on one side by the worker with a grapple of one crane, and hooking the lifting lug 4 of the web plate 25 on the other side by the worker with a hook of the other crane; the two cranes tension the grapple at the same speed, lift the steel beam off the support of the clamping fixture 1, leave a space for the steel beam to rotate below the steel beam, and then one of the cranes loosens the rope slowly to rotate the steel beam slowly until the side web plate 25 rotates to a position horizontal to the ground; then, the worker disengages the grapple hooked at the bottom from the lifting lug 4, hooks the grapple of a third crane to the lifting lug 4 in the opposite direction, and then slowly tightens the rope to enable the steel beam to continuously turn over until the lifting lug 4 is positioned in a horizontal state twice; at this moment, the worker removes the mould 1 and places a plurality of pier stud 6 under the steel beam, and then two cranes control the steel beam to slowly fall down, so that the steel beam is supported on the pier studs 6.
Because the lifting lugs 4 on the two sides of the steel beam are positioned at the flush position, the steel beam is more uniformly stressed and more stably lifted in the process of lifting the steel beam by a crane; moreover, the steel beams are turned over by the cooperation of a plurality of cranes, so that the time consumption of crane positioning is reduced, and potential safety hazards caused by crane positioning are reduced; finally place the girder steel on pier stud 6, because pier stud 6 supported area is limited, and is little with girder steel area of contact, be difficult for causing wearing and tearing and structural damage to the girder steel outward appearance.
Step 12: as shown in fig. 12, after step 11, the bottom plate 3 is located below the top plate 21, and the worker enters the steel beam and performs all-round welding and fixing between the bottom plate 3 and the upper rib plate 29, between the bottom plate 3 and the partition plate 22, between the bottom plate 3 and the side web plate 25, and between the bottom plate 3 and the sealing plate 28 by using a flat welding method.
Because the panel that bottom plate 3 is connected is numerous, and welding work load is big, if adopt the mode of welding on the back, not only waste time and energy, welding quality can not obtain the guarantee moreover to the welding slag that drops among the welding on the back very easily drops on the health, and causes the potential safety hazard. The bottom plate 3 is rotated to the bottom, the welding position is clear and visible, the bottom plate 3 can be welded in a conventional welding mode, the welding difficulty is small, the operation is easy, and the welding efficiency is indirectly improved.
Step 13: and (3) cutting the lifting lugs, as shown in fig. 12, after the steel beam is turned over, the working personnel cut the lifting lugs 4 protruding out of the two sides, so that the interference of the space occupation of the lifting lugs 4 on the subsequent splicing work is reduced.
Step 14: welding of support dog, as shown in fig. 13, after the girder steel upset finishes, the staff hangs support dog 5 and establishes the upper surface of roof 21, then confirms the fixed position of support dog 5 according to the design needs, then adopts the flat welding mode to carry out fixed welding with support dog 5 and roof 21 laminating department.
Step 15: the numbering marks, and the staff marks the girder steel on the lateral wall of the side web 25 of girder steel to confirm the concrete mounted position of girder steel.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (7)
1. A construction process for welding steel beams comprises the following steps:
step 1: erecting a mould (1), selecting a flat ground, and erecting a plurality of moulds (1) for erecting steel beams on the ground at intervals;
step 2: positioning the top plate (21), namely placing the top plate (21) on the plurality of clamping tools (1) in the step (1) and keeping the welding surface of the top plate (21) upward;
and step 3: the partition plates (22) are positioned and welded, the partition plates (22) are placed on the upper surface of the top plate (21) at intervals, the fixed position of each partition plate (22) is determined, and then the joint of the partition plates (22) and the top plate (21) is welded;
and 4, step 4: the middle web plate (23) is positioned and welded, the middle web plate (23) is placed in the middle area of the top plate (21) along the length direction of the top plate (21), the middle web plate (23) and all the partition plates (22) are fixedly inserted, and finally the joint of the middle web plate (23) and the top plate (21) and the joint of the middle web plate (23) and the partition plates (22) are welded;
and 5: the lower strip-shaped rib plates (24) are welded in a positioning mode, workers hang the lower strip-shaped rib plates (24) at the end portions of the steel beams and insert the lower strip-shaped rib plates (24) into inserting openings of the positions, close to the top plate (21), of the partition plates (22), so that the lower strip-shaped rib plates (24) are inserted into each partition plate (22), then the fixing positions of the lower strip-shaped rib plates (24) are adjusted, the end faces of all the lower strip-shaped rib plates (24) are flush with each other, and finally the positions, close to the top plate (21), of the lower strip-shaped rib plates (24) and the inserting positions of the partition plates (22) are;
step 6: the side web plates (25) are welded in a positioning mode, a worker puts the two side web plates (25) on the edges of the two sides of the upper surface of the top plate (21) in sequence, then the side web plates (25) and the partition plates (22) are attached to each other, the side walls of the side web plates (25) at the end parts of the steel beam are flush with the corresponding side walls of the bottom plate (3), and finally the attachment parts of the side web plates (25) and the partition plates (22) and the joint parts of the side web plates (25) and the bottom plate (3) are welded and fixed manually;
and 7: the sealing plates (28) are welded in a positioning mode, workers lift the sealing plates (28) at the end portions of the steel beams, then place the sealing plates (28) at the edge portions of the upper surfaces of the top plates (21), then enable the edges of the sealing plates (28) to be attached to the inner walls of the two side web plates (25), enable the sealing plates (28) and the lower strip-shaped rib plates (24) to be attached to each other, and finally manually weld and fix the attaching portions of the sealing plates (28) and the side web plates (25), the attaching portions of the sealing plates (28) and the lower strip-shaped rib plates (24) and the attaching portions of the sealing plates (28) and the top plates (21);
and 8: the upper strip-shaped rib plates (29) are positioned and fixed, workers hang the upper strip-shaped rib plates (29) at the opening above the steel beam, the upper strip-shaped rib plates (29) are located at the inserting openings of the partition plates (22), the upper strip-shaped rib plates (29) are inserted into the partition plates (22), two ends of the upper strip-shaped rib plates (29) are abutted against the inner walls of the sealing plates (28) on two sides, and finally, the inserting positions of the upper strip-shaped rib plates (29) and each inserting plate and the abutting positions of the upper strip-shaped rib plates (29) and the sealing plates (28) are welded and fixed manually;
and step 9: the bottom plate (3) is positioned and preliminarily fixed, the bottom plate (3) is hung above the steel beam by a worker, the bottom plate (3) is placed on the upper strip-shaped rib plate (29), then the bottom plate (3) is placed to correspond to the top plate (21), then the worker enters the steel beam, and the bottom plate (3) and the web plate, the bottom plate (3) and the upper strip-shaped rib plate (29), the bottom plate (3) and the partition plate (22) and the bottom plate (3) and the sealing plate (28) are preliminarily welded and fixed through spot welding;
step 10: the roof beam body upset welding, web (25) lateral wall rigid coupling has a plurality of lug (4) on both sides, then the staff establishes the upset that realizes the girder steel through the crane to hanging of lug (4), make bottom plate (3) be located the below of roof (21), then the inside that the staff entered into the girder steel is to bottom plate (3) and web, bottom plate (3) and last bar floor (29), bottom plate (3) and baffle (22), and bottom plate (3) and shrouding (28) unwelded region carry out welded fastening.
2. The construction process for welding steel beams according to claim 1, which is characterized in that: adding a step before the step 6: the fixed welding of web vertical stiffening rib (26), staff place limit web (25) subaerial, then confirm the welding position of web vertical stiffening rib (26), place web vertical stiffening rib (26) at corresponding welding position, weld web vertical stiffening rib (26) and web together.
3. The construction process for welding steel beams according to claim 1, which is characterized in that: a step is added after the step 10: welding of support dog (5), the mounted position of support dog (5) is confirmed at the top of girder steel to the staff, then hangs support dog (5) and establishes on roof (21), then the manual work welds support dog (5) in the position that corresponds.
4. The construction process for welding steel beams according to claim 1, which is characterized in that: in the step 10, the lifting lugs (4) on the two sides are symmetrically arranged, and a plurality of lifting lugs (4) are uniformly arranged along the length direction of the side web plate (25).
5. The construction process for welding steel beams according to claim 4, wherein the construction process comprises the following steps: a worker hooks the grapple of one crane with the lifting lugs (4) on the web plate (25) on one side and then hooks the grapple of the other crane with the lifting lugs (4) on the web plate (25) on the other side; the two cranes pull the grapple at the same speed to separate the steel beam from the support of the clamping fixture (1) and leave a steel beam turning space below the steel beam; the crane hooked on the lifting lug at the bottom slowly loosens the rope, so that the steel beam slowly rotates by 90 degrees, the crane hooked on the lifting lug at the upper part keeps still, the grabbing hook hooked at the bottom is separated from the lifting lug (4), the grabbing hook of one crane hooks the lifting lug (4) at the bottom in the opposite direction, then the rope is tensioned, the steel beam continuously rotates, the steel beam is turned by 180 degrees, finally the two cranes place the steel beam at the same speed, and the steel beam is placed on a plurality of pier studs (6).
6. The construction process for welding steel beams according to claim 1, which is characterized in that: in step 10, a step is added: and cutting the lifting lugs (4), wherein workers cut the lifting lugs (4) protruding out of the two sides of the side web plate (25).
7. The construction process for welding steel beams according to claim 3, wherein the construction process comprises the following steps: the staff marks the steel beam on the outer side wall of the side web (25) of the steel beam to determine the installation position of the steel beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010416280.XA CN111790995B (en) | 2020-05-17 | 2020-05-17 | Construction process for welding steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010416280.XA CN111790995B (en) | 2020-05-17 | 2020-05-17 | Construction process for welding steel beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111790995A true CN111790995A (en) | 2020-10-20 |
| CN111790995B CN111790995B (en) | 2022-01-07 |
Family
ID=72806115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010416280.XA Active CN111790995B (en) | 2020-05-17 | 2020-05-17 | Construction process for welding steel beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111790995B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853826A (en) * | 2021-01-14 | 2021-05-28 | 中铁工程设计咨询集团有限公司 | Straddle type single-rail steel-concrete combined rail beam box type girder assembling method |
| CN113787274A (en) * | 2021-08-26 | 2021-12-14 | 中车常州车辆有限公司 | Method for splicing middle beams of large and large vehicle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006231340A (en) * | 2005-02-22 | 2006-09-07 | Ishikawajima Harima Heavy Ind Co Ltd | Joining structure and joining method |
| CN201172796Y (en) * | 2008-04-03 | 2008-12-31 | 长安大学 | Steel box beam bridge deck structure with longitudinal ribs on |
| CN104060523A (en) * | 2014-05-23 | 2014-09-24 | 浙江东南网架股份有限公司 | Ultra-large type bridge box girder component, dedicated jig frame and assembling method thereof |
| CN104652284A (en) * | 2015-01-09 | 2015-05-27 | 安徽水安建设集团股份有限公司 | Reverse splicing construction method for steel box girder |
| CN106436549A (en) * | 2016-09-20 | 2017-02-22 | 江苏京沪重工有限公司 | Long-service-life high-strength bridge deck steel box girder and assembling method thereof |
| CN206736697U (en) * | 2017-05-08 | 2017-12-12 | 中国水利水电第十一工程局有限公司 | It is a kind of to be inverted assembled overpass steel box-girder |
| CN110170799A (en) * | 2019-06-04 | 2019-08-27 | 上海绿地建筑钢结构有限公司 | Steel box-girder manufacture craft |
| CN110258288A (en) * | 2019-05-07 | 2019-09-20 | 中交一公局桥隧工程有限公司 | Steel box-girder and steel box-girder processing method |
-
2020
- 2020-05-17 CN CN202010416280.XA patent/CN111790995B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006231340A (en) * | 2005-02-22 | 2006-09-07 | Ishikawajima Harima Heavy Ind Co Ltd | Joining structure and joining method |
| CN201172796Y (en) * | 2008-04-03 | 2008-12-31 | 长安大学 | Steel box beam bridge deck structure with longitudinal ribs on |
| CN104060523A (en) * | 2014-05-23 | 2014-09-24 | 浙江东南网架股份有限公司 | Ultra-large type bridge box girder component, dedicated jig frame and assembling method thereof |
| CN104652284A (en) * | 2015-01-09 | 2015-05-27 | 安徽水安建设集团股份有限公司 | Reverse splicing construction method for steel box girder |
| CN106436549A (en) * | 2016-09-20 | 2017-02-22 | 江苏京沪重工有限公司 | Long-service-life high-strength bridge deck steel box girder and assembling method thereof |
| CN206736697U (en) * | 2017-05-08 | 2017-12-12 | 中国水利水电第十一工程局有限公司 | It is a kind of to be inverted assembled overpass steel box-girder |
| CN110258288A (en) * | 2019-05-07 | 2019-09-20 | 中交一公局桥隧工程有限公司 | Steel box-girder and steel box-girder processing method |
| CN110170799A (en) * | 2019-06-04 | 2019-08-27 | 上海绿地建筑钢结构有限公司 | Steel box-girder manufacture craft |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853826A (en) * | 2021-01-14 | 2021-05-28 | 中铁工程设计咨询集团有限公司 | Straddle type single-rail steel-concrete combined rail beam box type girder assembling method |
| CN113787274A (en) * | 2021-08-26 | 2021-12-14 | 中车常州车辆有限公司 | Method for splicing middle beams of large and large vehicle |
| CN113787274B (en) * | 2021-08-26 | 2023-03-14 | 中车常州车辆有限公司 | Method for splicing middle beams of large and large vehicle types |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111790995B (en) | 2022-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111790995B (en) | Construction process for welding steel beam | |
| AU744392B2 (en) | Scaffoldless tank erection method | |
| CN104895335B (en) | Method for mounting hanging pillar | |
| CN111255217A (en) | Elevator shaft shaping operation platform and operation method thereof | |
| CN108979131A (en) | A kind of high-building construction steel form and operation frame integral hoisting stage apparatus | |
| CN110905261A (en) | Ultra-large-span closed stock ground structure for multiple material piling and taking machines and construction method thereof | |
| CN209780193U (en) | Suspension type scaffold | |
| CN112942847A (en) | Construction method for mounting decorative plate outside old curtain wall by crossing bottom barrier | |
| CN107587711A (en) | A kind of regularization assembled overhanging protection canopy and its assembly method | |
| CN208071235U (en) | A kind of bearing and lifting system of steel truss frame integral hoisting | |
| CN207296361U (en) | A kind of regularization assembled overhanging protection canopy | |
| CN102767282A (en) | Assembly-type high-formwork construction method for cantilever of oversized special-shaped conversion layer | |
| JP3950800B2 (en) | Suspension scaffold | |
| CN211173029U (en) | A liftable platform structure for chimney reinforcement construction | |
| CN210888118U (en) | Building faces limit structure post construction protection frame | |
| CN209742334U (en) | Steel construction vestibule bottom curtain construction platform | |
| CN112942777A (en) | Ultrahigh-layer periphery protection cyclic telescopic detachable cantilever structure and mounting method | |
| CN109779221A (en) | Steel corridor bottom curtain wall construction platform and construction technology | |
| CN218623494U (en) | Structure is demolishd to precast concrete cladding panel | |
| CN111042519A (en) | Early-dismantling system for building with beam and plate structure containing floor slab formwork | |
| CN218815100U (en) | Suspended walkway | |
| CN203270464U (en) | Steel concrete composite box beam corrugated steel web plate welding device and system | |
| CN109368478A (en) | Fixed system and floor remove handling method | |
| JP7444751B2 (en) | Wall material unit and wall construction method | |
| CN219118715U (en) | Elevator well safety protection and operation platform integrated device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |