CN116607423A - Ultra-wide baffle-free steel box girder segment height difference adjusting and installing method - Google Patents
Ultra-wide baffle-free steel box girder segment height difference adjusting and installing method Download PDFInfo
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- CN116607423A CN116607423A CN202310607901.6A CN202310607901A CN116607423A CN 116607423 A CN116607423 A CN 116607423A CN 202310607901 A CN202310607901 A CN 202310607901A CN 116607423 A CN116607423 A CN 116607423A
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- box girder
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 83
- 239000010959 steel Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010276 construction Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 15
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 description 19
- 239000000203 mixture Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000005192 partition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- 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
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
The invention belongs to the technical field of bridge construction, in particular to an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method, which comprises the following steps: step one, positioning the whole bridge, wherein the beam Duan Zhengti is positioned by taking a datum point required by a monitoring instruction as a control point. According to the ultra-wide baffle-free steel box girder segment height difference adjusting and installing method, through setting steps one to nine, rapid, efficient and accurate height difference adjusting and installing of the ultra-wide baffle-free steel box girder segment is achieved, the method has the advantages of being simple in operation, free of using a large amount of heavy equipment, high in construction efficiency and low in construction cost, and accordingly the problem that when the existing steel box girder segment is installed, the existing steel box girder segment is affected by arrangement of a bridge deck crane station and a lifting point, and after the installed girder segment and the girder segment to be installed are integrally located, local height differences exist between a top plate and a bottom plate, and later bridge deck unevenness can be caused if the height differences cannot be timely adjusted.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method.
Background
An ultra-wide steel box girder without partition plates is a bridge structure and consists of a plurality of adjacent girder sections similar to steel boxes. It is characterized in that: the fixed partition plate is not arranged, so that the internal space of the device is more spacious, and more devices and pipelines can be accommodated; and no crown beam is arranged between the beam head and the abutment, so that the traffic height is larger, and the method is suitable for occasions which need higher traffic space such as crossing highways, urban rail transit and the like.
The ultra-wide baffle-free steel box girder mainly comprises steel, welded joints and various accessories, and is generally constructed by adopting a field assembly mode. The structural system has excellent bearing capacity and rigidity, and is suitable for the construction of bridges with medium and small spans. Meanwhile, the structure can reduce the influence on the surrounding environment, saves the construction time and the cost, and is widely applied in recent years.
Because the length of the ultra-wide baffle-free steel box girder segment is longer, when the steel box girder segment is installed at present, the installation of the steel box girder segment is influenced by the arrangement of the station position and the hanging point of the bridge deck crane, after the installed girder segment and the girder segment to be installed are integrally positioned, local height difference exists between the top plate and the bottom plate, and if the height difference cannot be adjusted in time, the condition of uneven bridge deck at the later stage can be caused, so that the ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is needed.
Disclosure of Invention
Based on the technical problem that when the existing steel box girder segment is installed, the installed girder segment and the girder segment to be installed are affected by the arrangement of the station position and the hanging point of the bridge deck crane, after being integrally located, local height difference exists between the top plate and the bottom plate, and if the height difference cannot be adjusted in time, the situation of uneven bridge deck in the later stage can be caused, the invention provides an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method.
The invention provides an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method, which comprises the following steps:
step one, integrally positioning, namely positioning the whole bridge, wherein the positioning of the beam Duan Zhengti takes a datum point required by a monitoring instruction as a control point, and the posture of the beam Duan Zhengti is adjusted by matching a bridge deck crane with a hoisting adjusting mechanism, so that the positioning of the deflection and elevation of the beam Duan Zhouxian is completed, and the positioning of the beam Duan Zhengti is ensured to meet the monitoring requirement.
The lifting adjusting mechanism comprises a lifting beam frame used for being connected with a crane in a lifting mode, the surface of the lifting beam frame is triangular, the inner wall of the lower surface of the lifting beam frame is fixedly connected with a fixing frame in a rectangular shape, and an adjusting chute fixedly communicated with the inner wall of the fixing frame is formed in the lower surface of the fixing frame.
And step two, locking the straight beam, namely adopting the straight beam for locking the lifted beam section and the beam section to be lifted, wherein the locking position is a top plate near the side web plate.
And thirdly, welding, namely welding the side web plate and part of the top plate.
And fourthly, hanging the cable and tensioning the stay cable.
And fifthly, locally unloading the bridge deck crane, wherein the load of a front fulcrum of the bridge deck crane is correspondingly reduced, and the steel wire rope of the bridge deck crane is always in a tight state but is not continuously tightened, so that the local unloading is realized, and the safety of hoisting the beam section is ensured.
Step six, adjusting Liang Hezai, wherein the adjustment Liang Hezai is applied to each point of 100KN according to the 3m interval.
And step seven, girth welding, namely after the beam Duan Gaocha is adjusted, girth welding is implemented.
And step eight, repairing the coating damage, namely removing the 'straight beam' and the 'horse board' after the circumferential weld is welded, and repairing the coating damage caused by welding.
And step nine, advancing the bridge deck crane to perform the construction of the next beam section.
Preferably, the inner wall of the fixed frame is slidably connected with a plurality of moving sliding blocks with convex surfaces, and the moving sliding blocks are symmetrically distributed with the axis of the fixed frame as the center.
Preferably, the surface of the movable slide block is provided with a plurality of symmetrically distributed rotating connecting grooves, the inner wall of each rotating connecting groove is rotationally connected with a ball, and the surface of each ball extends to the surface of the movable slide block to be in sliding connection with the inner bottom wall of the fixed frame.
Preferably, both ends of the fixed frame are fixedly provided with a speed reducer for driving the movable sliding block to move, the surface of the speed reducer is fixedly provided with a driving motor, and an output shaft of the driving motor is fixedly connected with a power input end of the speed reducer.
Preferably, the inner walls of the fixed frames are fixedly provided with bearing blocks, the inner walls of the two bearing blocks are rotatably connected with driving screws through bearings, and the surfaces of the driving screws are in threaded connection with the surfaces of the movable sliding blocks.
Preferably, one ends of the two driving screws penetrate through and extend to two ends of the fixed frame, and one end of the driving screw is fixedly connected with the power output end of the speed reducer.
Preferably, a mounting groove is formed in the surface of the movable sliding block, and a movable pulley is rotatably connected to the inner wall of the mounting groove through a bearing.
Preferably, the lower surface of the fixed frame is fixedly connected with a hoisting steel wire rope, one end of the hoisting steel wire rope is fixedly connected with a hoisting fixed connecting plate, the surface of the hoisting fixed connecting plate is fixedly provided with fixed pulleys, and the fixed pulleys are uniformly distributed on the upper surface of the hoisting fixed connecting plate.
Preferably, the fixed pulleys and the movable pulleys are distributed in a staggered manner, and the surfaces of the hoisting steel wire ropes are respectively connected with the surfaces of the fixed pulleys and the movable pulleys in a sliding manner.
Preferably, according to the monitoring and design calculation result, the step six is performed by adjusting Liang Hezai, the height difference between the beam section to be lifted and the lifted beam section after the bridge deck crane is unloaded is less than 7mm, local height difference adjustment can be omitted, direct horse plate adjustment is performed, if the local height difference exceeds 10mm, the height difference adjustment is performed by adopting a profile steel counterforce bracket, and the maximum beam load adjustment is controlled to be 100KN.
The beneficial effects of the invention are as follows:
1. through setting up step one to step nine, realize carrying out quick high-efficient accurate altitude mixture control installation to super wide no baffle steel case roof beam section, have easy operation, need not to use a large amount of heavy equipment, the efficiency of construction is high, construction cost low characteristics to when having solved current installation steel case roof beam section, influenced by bridge floor loop wheel machine station and hoisting point arrangement, the roof slab can exist local altitude mixture between the roof slab after the installation roof beam section is in place with waiting to install the roof beam section, if can not in time adjust the altitude mixture control, can cause the problem of the circumstances of later stage bridge floor unevenness.
2. Through setting up hoist and mount adjustment mechanism, when carrying out the altitude mixture control installation to super wide no baffle steel case girder section, through hoist and mount installation the preceding, carry out quick level adjustment to the steel case girder section that hoist and mount left ground, when preventing hoist and mount installation, the steel case girder is in non-horizontal state, is difficult to carry out the altitude mixture control installation, realizes carrying out the effect of horizontal hoisting to the steel case girder section fast to reach the effect of more quick efficient to the installation of carrying out quick altitude mixture control to the steel case girder section.
Drawings
FIG. 1 is a schematic diagram of an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method provided by the invention;
FIG. 2 is a perspective view of a lifting beam structure of the ultra-wide baffle-free steel box girder segment height difference adjusting and installing method provided by the invention;
FIG. 3 is a front view of a lifting beam structure of the ultra-wide baffle-free steel box girder segment height difference adjusting and installing method provided by the invention;
FIG. 4 is a bottom view of a fixed frame structure of an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method according to the present invention;
FIG. 5 is a perspective view of a driving screw structure of an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method provided by the invention;
fig. 6 is a perspective view of a movable slide block structure of the ultra-wide baffle-free steel box girder segment height difference adjusting and installing method.
In the figure: 1. hoisting the beam frame; 2. a fixed frame; 3. adjusting the chute; 4. moving the slide block; 5. rotating the connecting groove; 6. a ball; 7. a speed reducer; 8. a driving motor; 9. a bearing seat; 10. driving a screw; 11. a mounting groove; 12. a movable pulley; 13. hoisting a steel wire rope; 14. hoisting a fixed connecting plate; 15. and a fixed pulley.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-6, an ultra-wide baffle-free steel box girder segment height difference adjusting and installing method comprises the following steps:
step one, integrally positioning, namely positioning the whole bridge, wherein the positioning of the beam Duan Zhengti takes a datum point required by a monitoring instruction as a control point, and the posture of the beam Duan Zhengti is adjusted by matching a bridge deck crane with a hoisting adjusting mechanism, so that the positioning of the deflection and elevation of the beam Duan Zhouxian is completed, and the positioning of the beam Duan Zhengti is ensured to meet the monitoring requirement.
Specifically, hoist and mount adjustment mechanism is including being used for the hoist and mount roof beam structure 1 that is connected with the loop wheel machine hoist and mount, and hoist and mount roof beam structure 1's surface is the triangle-shaped, and hoist and mount roof beam structure 1's lower surface fixedly connected with inner wall is the fixed frame 2 of rectangle form, and the regulation spout 3 of fixed intercommunication with fixed frame 2 inner wall is seted up to fixed frame 2's lower surface.
The inner wall of the fixed frame 2 is slidably connected with a plurality of movable sliders 4 with convex surfaces, and the movable sliders 4 are symmetrically distributed with the axis of the fixed frame 2 as the center.
A plurality of symmetrically distributed rotating connecting grooves 5 are formed in the surface of the movable sliding block 4, balls 6 are rotatably connected to the inner wall of the rotating connecting grooves 5, and the surfaces of the balls 6 extend to the surface of the movable sliding block 4 and are slidably connected with the inner bottom wall of the fixed frame 2.
When in use, the ball 6 is in sliding connection with the inner bottom wall of the fixed frame 2, so that the friction force between the movable slide block 4 and the inner wall of the fixed frame 2 is reduced, and the effect of facilitating the sliding movement of the movable slide block 4 on the inner wall of the fixed frame 2 is achieved.
The two ends of the fixed frame 2 are fixedly provided with a speed reducer 7 for driving the movable sliding block 4 to move, the surface of the speed reducer 7 is fixedly provided with a driving motor 8, and an output shaft of the driving motor 8 is fixedly connected with a power input end of the speed reducer 7.
Further, in this embodiment, two driving motors 8 symmetrically installed on the axis of the fixed frame 2 are electrically connected with a motor forward and backward rotation wireless remote control switch through cables, so that the remote control forward and backward rotation operation control is performed on the driving motors 8 through the motor forward and backward rotation wireless remote control switch.
The inner wall of the fixed frame 2 is fixedly provided with bearing blocks 9, the inner walls of the two bearing blocks 9 are rotatably connected with driving screws 10 through bearings, and the surfaces of the driving screws 10 are in threaded connection with the surfaces of the movable sliding blocks 4.
One end of each of the two driving screws 10 penetrates through and extends to two ends of the fixed frame 2, and one end of each of the driving screws 10 is fixedly connected with the power output end of the speed reducer 7.
When the sliding block type sliding block is used, the driving motor 8 drives the driving screw 10 to rotate through the speed reducer 7 by controlling the driving motor 8 to rotate positively or reversely, and the driving screw 10 drives the moving sliding block 4 to slide on the inner wall of the fixed frame 2.
The surface of the movable slide block 4 is provided with an installation groove 11, and the inner wall of the installation groove 11 is rotatably connected with a movable pulley 12 through a bearing.
The lower surface of the fixed frame 2 is fixedly connected with a hoisting steel wire rope 13, one end of the hoisting steel wire rope 13 is fixedly connected with a hoisting fixed connecting plate 14, the surface of the hoisting fixed connecting plate 14 is fixedly provided with fixed pulleys 15, and a plurality of fixed pulleys 15 are uniformly distributed on the upper surface of the hoisting fixed connecting plate 14.
The fixed pulleys 15 and the movable pulleys 12 are distributed in a staggered manner, and the surfaces of the hoisting steel wire ropes 13 are respectively connected with the surfaces of the fixed pulleys 15 and the movable pulleys 12 in a sliding manner.
Specifically, the working principle of the hoisting adjusting mechanism is that when the steel box girder segment is hoisted, the hoisting fixed connecting plate 14 is fixedly connected with the surface of the steel box girder.
Further, the hoisting fixed connection plate 14 is welded on the surface of the steel box girder in advance, and the hoisting fixed connection plate 14 is fixedly connected with the steel box girder segment through the cooperation of bolts and nuts.
After the four hoisting fixed connection plates 14 are fixedly connected with the surface of the steel box girder, the triangular hoisting girder frame 1 is connected with a lifting hook of a crane, then the crane carries out hoisting and hoisting on the steel box girder through the hoisting girder frame 1, and after the steel box girder is lifted off the ground, if the steel box girder is in a horizontal state, the steel box girder is directly hoisted and installed.
If the steel box girder is in a non-horizontal state, one or more corresponding driving motors 8 are controlled to work according to the inclination direction and the position of the steel box girder, the driving motors 8 drive driving screws 10 to rotate through speed reducers 7, the driving screws 10 drive a plurality of movable sliding blocks 4 to move in the fixed frame 2 through threads, the movable sliding blocks 4 are driven to move to the movable pulleys 12, the movable pulleys 12 are driven to move from one end of the fixed frame 2 to the axis position of the fixed frame 2, the hoisting steel wire ropes 13 are driven to move, the movable pulleys 12 are far away from the fixed pulleys 15, the hoisting steel wire ropes 13 are tensioned, the fixed pulleys 15, the hoisting fixed connecting plates 14 and the surface of the steel box girder are driven to move close to the lower surface of the fixed frame 2, the steel box girder is horizontally adjusted, and after the horizontal adjustment of the steel box girder is completed, the steel box girder sections are hoisted and installed through a crane.
Through setting up hoist and mount adjustment mechanism, when carrying out the altitude mixture control installation to super wide no baffle steel case girder section, through hoist and mount installation the preceding, carry out quick level adjustment to the steel case girder section that hoist and mount left ground, when preventing hoist and mount installation, the steel case girder is in non-horizontal state, is difficult to carry out the altitude mixture control installation, realizes carrying out the effect of horizontal hoisting to the steel case girder section fast to reach the effect of more quick efficient to the installation of carrying out quick altitude mixture control to the steel case girder section.
And step two, locking the lifted beam section and the beam section to be lifted by adopting a straight beam, wherein the locking position is a top plate near the side web plate.
Step three, welding, namely welding the edge web plate and part of the top plate
Specifically, the top plates were each welded with a 1m long weld.
The inclined bottom plates are temporarily connected by adopting a scheme of a horse plate and a flitch.
And fourthly, hanging cables, tensioning the stay cables, and providing vertical force of each stay cable with 1200KN, wherein the corresponding horizontal axial force is the largest.
And fifthly, locally unloading the bridge deck crane, wherein the load of the front pivot of the bridge deck crane is correspondingly reduced.
Specifically, the steel wire rope of the bridge deck crane is always in a tight state but not continuously tightened, so that local unloading is realized, the safety of hoisting of the beam section is guaranteed, and the bridge deck crane is provided with a crane weight monitoring device, so that the unloading condition of the bridge deck crane can be fed back in real time.
Step six, adjusting Liang Hezai, wherein the adjustment Liang Hezai is applied to each point of 100KN according to the 3m interval.
Specifically, in the step six, liang Hezai, according to the monitoring and design calculation results, the height difference between the beam section to be lifted and the lifted beam section after the bridge deck crane is unloaded is less than 7mm, local height difference adjustment can be omitted, direct horse plate adjustment can be carried out, if the local height difference exceeds 10mm, the height difference adjustment is carried out by adopting a profile steel counter-force bracket, and the maximum beam load adjustment is controlled to be 100KN.
And step seven, girth welding, namely after the beam Duan Gaocha is adjusted, girth welding is implemented.
Specifically, the girth welding is assisted by a horse plate, and the horse plate is properly encrypted and reinforced so as to achieve the effects of improving local rigidity and limiting torsion.
And step eight, repairing the coating damage, namely removing the 'straight beam' and the 'horse board' after the circumferential weld is welded, and repairing the coating damage caused by welding.
And step nine, advancing the bridge deck crane to perform the construction of the next beam section.
Through setting up step one to step nine, realize carrying out quick high-efficient accurate altitude mixture control installation to super wide no baffle steel case roof beam section, have easy operation, need not to use a large amount of heavy equipment, the efficiency of construction is high, construction cost low characteristics to when having solved current installation steel case roof beam section, influenced by bridge floor loop wheel machine station and hoisting point arrangement, the roof slab can exist local altitude mixture between the roof slab after the installation roof beam section is in place with waiting to install the roof beam section, if can not in time adjust the altitude mixture control, can cause the problem of the circumstances of later stage bridge floor unevenness.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (10)
1. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized by comprising the following steps of:
step one, integrally positioning, namely positioning the whole bridge, wherein the positioning of the beam Duan Zhengti takes a datum point required by a monitoring instruction as a control point, and the posture of the beam Duan Zhengti is adjusted by matching a bridge deck crane with a hoisting adjusting mechanism, so that the positioning of the beam Duan Zhouxian and the positioning of the elevation are completed, and the positioning of the beam Duan Zhengti is ensured to meet the monitoring requirement;
the lifting adjusting mechanism comprises a lifting beam frame (1) used for being connected with a crane in a lifting manner, the surface of the lifting beam frame (1) is triangular, a fixed frame (2) with a rectangular inner wall is fixedly connected to the lower surface of the lifting beam frame (1), and an adjusting chute (3) fixedly communicated with the inner wall of the fixed frame (2) is formed in the lower surface of the fixed frame (2);
step two, locking the straight beam, namely locking the lifted beam section and the beam section to be lifted by adopting the straight beam, wherein the locking position is a top plate near the side web;
step three, welding, namely welding a side web plate and a part of top plate;
step four, hanging cables and tensioning stay cables;
step five, the bridge deck crane is locally unloaded, the load of a front fulcrum of the bridge deck crane is correspondingly reduced, and a steel wire rope of the bridge deck crane is always in a tight state but is not continuously tightened, so that the local unloading is realized, and the safety of hoisting of a beam section is ensured;
step six, adjusting Liang Hezai, namely applying adjustment Liang Hezai to each point of 100KN according to the 3m interval;
step seven, performing girth welding after the beam Duan Gaocha is adjusted;
step eight, repairing the coating damage, namely removing the linear beam and the horse board after the circumferential weld is welded, and repairing the coating damage caused by welding;
and step nine, advancing the bridge deck crane to perform the construction of the next beam section.
2. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: the inner wall sliding connection of fixed frame (2) has the removal slider (4) that the surface is protruding shape, a plurality of remove slider (4) regard the axis of fixed frame (2) as the center and be symmetrical distribution.
3. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: a plurality of symmetrically distributed rotating connecting grooves (5) are formed in the surface of the movable sliding block (4), balls (6) are rotatably connected to the inner wall of the rotating connecting grooves (5), and the surfaces of the balls (6) extend to the surface of the movable sliding block (4) to be in sliding connection with the inner bottom wall of the fixed frame (2).
4. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method according to claim 3, wherein the method comprises the following steps: the fixed frame is characterized in that a speed reducer (7) used for driving the movable sliding block (4) to move is fixedly arranged at two ends of the fixed frame (2), a driving motor (8) is fixedly arranged on the surface of the speed reducer (7), and an output shaft of the driving motor (8) is fixedly connected with a power input end of the speed reducer (7).
5. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: the inner walls of the fixed frames (2) are fixedly provided with bearing blocks (9), the inner walls of the two bearing blocks (9) are rotatably connected with driving screws (10) through bearings, and the surfaces of the driving screws (10) are in threaded connection with the surfaces of the movable sliding blocks (4).
6. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: one end of each driving screw (10) penetrates through and extends to two ends of the fixing frame (2), and one end of each driving screw (10) is fixedly connected with the power output end of the speed reducer (7).
7. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: the surface of the movable sliding block (4) is provided with a mounting groove (11), and the inner wall of the mounting groove (11) is rotatably connected with a movable pulley (12) through a bearing.
8. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: the fixed frame is characterized in that a hoisting steel wire rope (13) is fixedly connected to the lower surface of the fixed frame (2), one end of the hoisting steel wire rope (13) is fixedly connected with a hoisting fixed connecting plate (14), fixed pulleys (15) are fixedly arranged on the surface of the hoisting fixed connecting plate (14), and the fixed pulleys (15) are uniformly distributed on the upper surface of the hoisting fixed connecting plate (14).
9. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: the fixed pulleys (15) and the movable pulleys (12) are distributed in a staggered mode, and the surfaces of the hoisting steel wire ropes (13) are respectively connected with the surfaces of the fixed pulleys (15) and the movable pulleys (12) in a sliding mode.
10. The ultra-wide baffle-free steel box girder segment height difference adjusting and installing method is characterized in that: and step six, adjusting Liang Hezai, namely adjusting the height difference of the beam section to be lifted and the lifted beam section after the bridge deck crane is unloaded by less than 7mm according to monitoring and design calculation results, directly adjusting the horse plate without local height difference adjustment, and controlling the maximum beam adjusting load to be 100KN by adopting a profile steel counterforce bracket if the local height difference exceeds 10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310607901.6A CN116607423A (en) | 2023-05-26 | 2023-05-26 | Ultra-wide baffle-free steel box girder segment height difference adjusting and installing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310607901.6A CN116607423A (en) | 2023-05-26 | 2023-05-26 | Ultra-wide baffle-free steel box girder segment height difference adjusting and installing method |
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| Publication Number | Publication Date |
|---|---|
| CN116607423A true CN116607423A (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310607901.6A Pending CN116607423A (en) | 2023-05-26 | 2023-05-26 | Ultra-wide baffle-free steel box girder segment height difference adjusting and installing method |
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| CN (1) | CN116607423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118108128A (en) * | 2024-04-30 | 2024-05-31 | 河南省蒲业建筑安装有限公司 | Steel box girder hoisting equipment |
-
2023
- 2023-05-26 CN CN202310607901.6A patent/CN116607423A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118108128A (en) * | 2024-04-30 | 2024-05-31 | 河南省蒲业建筑安装有限公司 | Steel box girder hoisting equipment |
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