CN211420881U - Movable formwork for concrete construction of overhanging wing plate of steel-concrete composite beam - Google Patents

Movable formwork for concrete construction of overhanging wing plate of steel-concrete composite beam Download PDF

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Publication number
CN211420881U
CN211420881U CN201921859371.XU CN201921859371U CN211420881U CN 211420881 U CN211420881 U CN 211420881U CN 201921859371 U CN201921859371 U CN 201921859371U CN 211420881 U CN211420881 U CN 211420881U
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China
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steel
concrete
template
suspender
stiffening
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Inventor
蒋光伟
蒙东升
李育林
饶坤荣
梁腾
卢轮
郑寰宇
黄光钰
李焕坤
伍锦智
林显荣
韦庄
阳杨
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Guangxi Road Construction Engineering Group Co ltd
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Guangxi Road Construction Engineering Group Co ltd
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Abstract

The utility model relates to a steel-concrete composite beam cantilever wing plate moving die carrier for concrete construction, the structure is for setting up the support column of the mutual symmetry of a plurality of on steel box girder flange board, installs a plurality of crossbeams on the support column that corresponds, and outside jib and inboard jib are installed respectively to the crossbeam both ends, and outside jib and inboard jib below suspend in midair the interior outer fringe of connecting the template of putting more energy into, the inward flange of the template of putting more energy into and the marginal chucking fixed connection of steel box girder both sides flange board. The utility model can realize the pouring mould frame at the overhanging wing plate of the superposed beam without erecting a full support or a triangular diagonal bracing support at the side surface of the steel box girder, and the overhanging concrete panel has no groove; and the whole die carrier can move longitudinally, and the die carrier is transferred to the next pouring working section on the premise of not dismantling the die carrier structure, so that the construction efficiency is greatly improved, the die carrier can be recycled after construction, and the construction cost is saved.

Description

Movable formwork for concrete construction of overhanging wing plate of steel-concrete composite beam
Technical Field
The utility model relates to a building construction field specifically is a steel-concrete composite beam encorbelments aerofoil moving die carrier for concrete construction, is applicable to span, the great steel-concrete composite beam bridge pterygoid lamina concreting construction of height or other building concrete construction of encorbelmenting.
Background
The steel-concrete composite beam is widely applied to urban bridges as a bridge structure form. The steel structure and concrete combined stress girder is characterized in that the girder is a girder body with a steel structure or a steel box structure, and a panel is made of concrete; the two bear the load of the bridge deck together, and the dead weight of the bridge can be greatly reduced. The structure enables the reinforced concrete slab and the steel box girder to be jointly bent under the action of vertical load through the shear key, the pressure area borne by the upper edge of the steel box girder is greatly reduced, the stress characteristics of the steel bars and the concrete are fully exerted, the reinforced concrete slab and the steel box girder are combined into a whole, the section rigidity is increased, and therefore the steel consumption can be reduced. Meanwhile, due to the construction characteristics of the steel structure, the upper and lower structures of the bridge can be constructed simultaneously, and the construction progress is accelerated. Steel-mixed composite girders are therefore increasingly used in urban and highway construction.
The overhanging wing plate part of the concrete bridge deck of the steel-concrete composite beam mainly adopts a full framing method and a steel box beam side triangular diagonal bracing framing method in the traditional pouring construction. Because the pterygoid lamina part of encorbelmenting is small, and the bridge floor is higher apart from ground height, and the span is great, and the full framing method once sets up needs the transportation, installation, demolising of a large amount of materials, and construction cost and human cost are very high, and construction safety risk is very big, and full very long all around of full framing method frame, are unfavorable for accelerating the construction progress of engineering.
The steel box girder side triangular diagonal bracing support method is the most common construction method at present, and the method needs to weld more connecting pieces on the side of the steel box girder and has permanent influence on the appearance and the structure of the steel box girder to a certain extent; in addition, the temporary ladder frame is required to be erected to the armpit of the wing plate for construction operation in the mounting and dismounting of the support, the safety risk of the operation is increased progressively along with the height of the temporary ladder frame, the frequent dismounting cost of the ladder frame is higher, the flexibility is poor, and the construction period is longer.
The searched published documents about the formwork support at the overhanging position of the steel-concrete composite beam are as follows:
1. steel-concrete composite beam flange plate construction gallows, application number: CN 201721762102.2; the applicant: second engineering, Inc. of Zhongjiao-II voyage; sixteen office group road and bridge engineering limited for medium-iron; and (3) abstract: the steel-concrete composite beam flange plate construction hanging bracket comprises a plurality of supporting structures and a template system, wherein the supporting structures are arranged along the outer side of a box girder web plate at vertical uniform intervals, each supporting structure comprises a bottom joist, a supporting frame and hanging rods, at least two vertical hanging rods are fixed between the cantilever rods and the bottom joists, the template system comprises a plurality of distribution beams and a plurality of bent frames, the distribution beams are arranged on the bottom joist at vertical intervals, and the bent frames are arranged on the distribution beams at horizontal uniform intervals. The utility model has the advantages of stable in structure, with low costs, time limit for a project are short to not receive the influence of underbridge traffic conditions and topography in installation and the use, solved and striden the difficult problem that existing road bracket set up, reduced the construction procedure, improved the efficiency of construction.
As can be known from published documents, the flange plate construction hanger in the prior art needs to uniformly arrange a support structure on the whole length of a box girder flange, and still has the disadvantages of long construction period and high construction cost.
Disclosure of Invention
The utility model provides a movable mould frame for concrete construction of a steel-concrete composite beam overhanging wing plate; the structure can realize the pouring mould frame at the overhanging wing plate of the superposed beam without erecting a full support or a triangular diagonal bracing support at the side surface of the steel box beam, and the overhanging concrete panel has no groove; and the whole die carrier can move longitudinally, and the die carrier is transferred to the next pouring working section on the premise of not dismantling the die carrier structure, so that the construction efficiency is greatly improved, the die carrier can be recycled after construction, and the construction cost is saved.
In order to achieve the purpose of the invention, the technical scheme is as follows:
steel-concrete composite beam encorbelments aerofoil concrete construction and uses moving die carrier structure sets up the support column of the mutual symmetry of a plurality of on steel box girder flange board, installs a plurality of crossbeams on the support column that corresponds, and outside jib and inboard jib are installed respectively to the crossbeam both ends, and outside jib and inboard jib below suspend in midair the interior outer fringe of connecting the template of putting more energy into in midair, the inward flange of the template of putting more energy into and the marginal chucking fixed connection of steel box girder both sides flange board.
The stiffening template is suspended on two sides of the flange plate of the steel box girder in a suspending way and is clamped and connected, so that a symmetrical and stable integral structure is formed to bear the load of the cantilever flange plate concrete construction. The overhanging part of the concrete panel is solidified and formed on the stiffening template, the weight of the concrete is transmitted to the beam by the outer suspender and the inner suspender, and the pressure is transmitted to the supporting column by the beam, thereby avoiding the complicated construction and structure of the traditional full-framing method and the steel box girder side triangular inclined strut support method.
Crossbeam below sets up die carrier traveling system, and die carrier traveling system includes: the longitudinal beam is fixed below the cross beam, the longitudinal beam and the cross beam form an integral frame, and the longitudinal beam is arranged above the flange plate of the steel box girder; a plurality of pulleys are arranged below the longitudinal beam, and the lower sides of the pulleys are aligned with the track;
there are two situations for the position of the track: in the first case, the rails are fixed to the concrete panels already cast; in the second case, the rail is fixed to the steel box girder flange plate without the concrete panel poured, and the pulley is connected to the rail through the pulley leg.
The section steel track is divided into four sections conventionally and is correspondingly arranged below the four pulleys respectively. The front wheel track is laid on the flange plate of the steel box girder, the rear wheel track is laid on the poured concrete, and the function of walking the whole formwork on the bridge deck with two different heights of the poured concrete and the un-poured concrete is realized through two groups of walking pulleys with different heights; the lengthening design of the two ends of the I-shaped steel longitudinal beam can enable the integral formwork traveling system to keep the front pulley in the top surface of the steel box girder all the time, and the rear pulley is in the state of traveling on the top surface of the poured concrete.
The inner edge of the stiffening template is provided with a triangular clamping strip, the edge parts of the flange plates on two sides of the corresponding steel box girder are provided with die assembly limiting clamping grooves, and the die assembly limiting clamping grooves are mutually hooked and fixed.
The die assembly limiting clamping groove is formed by welding two steel plates at an angle, one steel plate is welded at the edge of the upper flange plate of the steel box girder, the other steel plate is obliquely picked to form a clamping groove with a downward opening, the obliquely picked steel plate is perpendicular to the groove opening and the center connecting line of the lifting ring, and the groove opening is triangular.
A grout stopping strip is attached to the inner side of the notch of the die closing limiting clamping groove; the grout stopping strip is made of rubber materials, has good shaping and elasticity, and can prevent concrete leakage. The design of the die assembly limiting clamping groove ensures that the die assembly concreting is not leaked under the tightening state of the inner suspender, the suspended stiffening template is limited to swing in the horizontal direction during construction, and the stiffening template rotates around the lifting ring and the lifting ring when the demolding is not hindered.
The upper part of the outer suspender passes through an outer suspender hole preset by the cross beam, and an outer adjusting nut is screwed at the part where the outer suspender passes through for limiting; the lower part of the outer suspender is provided with a hanging ring which penetrates through a hanging hole preset in the stiffening template.
The strength template can freely rotate around the hanging ring; the outer suspender can realize the height adjustment of the tail end of the stiffening template, and ensure the correct pouring position of the wing plate; the outer side suspender can realize that the stiffening formwork is convenient to be separated from a concrete surface (demoulding) after concrete pouring in a hanging ring hinging mode, and does not separate from a formwork system.
The upper part of the inner suspender passes through an inner suspender hole A preset by the cross beam, and an inner adjusting nut is screwed on the part where the inner suspender passes through for limiting; the lower part of the inner suspender passes through an inner suspender hole B preset by the stiffening template, and a lower fixing nut is arranged at the penetrating part for limiting; the part of the lower fixing nut, which is contacted with the stiffening template, is provided with a cushion block.
The uppermost end of the inner suspender is also provided with an upper fixing nut for limiting and protecting the inner adjusting nut.
The bottom of the cross beam is welded with a limiting lantern ring, and the limiting lantern ring is sleeved on the support column; the bolt passes through the preformed holes on the limiting lantern ring and the supporting column. The cross beam is welded by double splicing of I-shaped steel or channel steel; welding a limiting lantern ring at the bottom corresponding to the position of the support column, wherein the limiting lantern ring is made of a steel pipe with the diameter slightly larger than that of the support column;
and the PVC pipe is sleeved outside the inner suspender and used for isolating concrete.
3 angle steel stiffening ribs are longitudinally welded on the stiffening template, and one angle steel stiffening rib is transversely welded every 50 cm.
The construction method of the movable formwork structure for the concrete construction of the cantilever wing plate of the steel-concrete composite beam comprises the following steps of:
(1) after the parts are preprocessed according to drawings, all the prefabricated parts are transported to the site, and steel pipe supporting columns are installed at the tops of flange plates on the steel box girders according to design positions;
(2) welding steel pipe support columns on the tops of the upper flange plates of the steel box girders according to the designed positions, and welding mould-closing limiting clamping grooves on the edges of the upper flange plates of the steel box girders;
(3) welding a cross beam and a longitudinal beam into a whole at a ground leveling position or on a steel box girder, mounting a pulley below the longitudinal beam, mounting an outer suspension rod and an inner suspension rod at two ends of the cross beam, mounting a stiffening template on suspension rings of the outer suspension rods, hoisting the whole formwork, butting a limiting lantern ring with a corresponding support column, and mounting a bolt;
(4) drawing the stiffening template to enable the triangular clamping strip to be embedded into the die assembly limiting clamping groove, connecting the inner side suspender with the stiffening template, and carrying out primary die assembly;
(5) measuring and checking the height of the outer side of the stiffening template, adjusting the height to a designed height through an outer adjusting nut, and tightening an inner adjusting nut to complete die assembly;
(6) and (4) installing bridge deck reinforcing steel bars, cleaning sundries in the template, spraying a release agent, and pouring concrete.
(7) After the concrete is cured to reach the strength, unscrewing the inner adjusting nut, rotating the upper fixing nut, dismantling the inner suspender, and using the dead weight of the stiffening template to enable the stiffening template to rotate around the lifting ring, so that the stiffening template is separated from the concrete surface, and demolding is completed;
(8) removing the bolts on the limiting ring sleeves, jacking the whole die carrier at two ends of the longitudinal beam by using four jacks, laying a profile steel track below the pulleys, unloading the jacks to enable the pulleys to fall on the track, and drawing and walking to a next pouring section;
(9) after the trolley is in place, jacking the whole support at two ends of the longitudinal beam by using four jacks, removing the lower rail of the pulley, and dropping the whole support on the supporting column;
(10) the general pouring from the step (3) to the step (9) to the full-bridge is repeated;
(11) after the strength of the concrete meets the requirement, sequentially removing the stiffening template, the suspender, the cross beam and the longitudinal beam; cutting the support columns of the concrete surface at the exposed part to finish the construction of the upper bridge deck; and the disassembled parts are transported to the next construction site for use or transported back to a material turnover warehouse for maintenance and storage.
Compared with the substantive characteristics and progress of the prior art, the utility model is:
1. the utility model discloses overcome the die carrier of pouring of folded beam pterygoid lamina department of encorbelmenting, traditional full hall support and steel box girder side bracing support exist not enough, and the installation is swiftly convenient during the construction, combines the jack to go up and down, and whole die carrier falls on the track and removes through the pulley, improves the efficiency of construction, shortens construction period.
2. On traditional clamp mould construction basis, set up spacing draw-in groove and card strip in template binding position, effectively prevent concrete construction and leak thick liquid, and effectively prevent to hang the ascending swing of die carrier horizontal direction through the inlay card, increased stability, the sound construction.
3. The utility model discloses an all compound dies and the operation of form removal can all go on bridge upper portion, construction safety.
4. The utility model discloses the longeron that uses in, material such as crossbeam and stiffening template all adopt shaped steel, and the material source is extensive, can realize standardized manufacturing, and the mill concentrates processing, and welding quality can obtain abundant assurance, and degree of standardization is high.
5. The utility model discloses well utilize upper portion rings to connect the template, make the template can freely change around rings, can realize light drawing of patterns with shoring mode cooperation template dead weight.
Drawings
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention in the front view direction;
FIG. 3 is a schematic view of a cross beam of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at I;
FIG. 5 is a schematic view of a support column;
FIG. 6 is a schematic structural view of a mold frame walking system;
1. a support pillar; 2. a cross beam; 23. a limiting lantern ring; 24. a bolt; 3. an outer boom; 31 an external adjusting nut; 32 hoisting rings; 4. an inboard boom; 41. an inner adjusting nut; 42. a lower fixing nut; 43. cushion blocks; 44. an upper fixing nut; 5. stiffening the template; 51. a triangular clamping strip; b; 6. a stringer; 7. a steel box girder flange; 71. a die assembly limiting clamping groove; 8. a track; 9. a pulley; 10. and (4) supporting legs of the pulley.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings of fig. 1-6 of the present invention; the double-box girder structure is shown in the attached drawings, but it should be noted that the utility model discloses well die carrier structure and construction method are applicable to the condition of single box girder or a plurality of box girders equally.
Steel concrete composite beam encorbelments aerofoil concrete construction and uses moving die carrier sets up a plurality of support columns 1 of mutual symmetry on steel box girder flange board 7, install a plurality of crossbeams 2 on the support column 1 that corresponds, outside jib 3 and inboard jib 4 are installed respectively to 2 both ends of crossbeam, and the inside and outside edge of connection stiffening template 5 is suspended in midair to outside jib 3 and inboard jib 4 below, and the inside edge of stiffening template 5 and the marginal chucking fixed connection of steel box girder both sides flange board 7.
Crossbeam 2 below sets up die carrier traveling system, and die carrier traveling system includes: the longitudinal beam 6 is fixed below the cross beam 2, the longitudinal beam 6 and the cross beam 2 form an integral frame, and the longitudinal beam 6 is arranged above a flange plate 7 of the steel box girder; a plurality of pulleys 9 are arranged below the longitudinal beam 6, and the lower part of each pulley 9 is aligned with the corresponding track 8; the I-shaped steel longitudinal beam 28 is 13m long, and each end of the I-shaped steel longitudinal beam extends 50cm out of the working surface. The pulley 29 is arranged at the position 25cm away from the end part of the longitudinal beam, and the pulley is arranged at the position 25cm away from the end part of the longitudinal beam;
there are two situations for the position of the rail 8: in the first case, the rails 8 are fixed to the concrete panels already cast; in the second case, the rail 8 is fixed to the steel box girder flange 7 without concrete slab poured, and the pulley 9 is connected to the rail 8 by means of the pulley leg 10.
The inner edge of the stiffening template 5 is provided with a triangular clamping strip 51, the edge parts of the flange plates 7 on two sides of the corresponding steel box girder are provided with a die assembly limiting clamping groove 71, and the die assembly limiting clamping groove 71 and the die assembly limiting clamping groove are mutually hooked and fixed.
And a grout stopping strip is attached to the inner side of the notch of the die closing limiting clamping groove 71.
The upper part of the outer suspender 3 passes through an outer suspender hole preset in the cross beam 2, and an outer adjusting nut 31 is screwed at the part where the outer suspender 3 passes through for limiting; the lower part of the outer side suspender 3 is provided with a hanging ring 32, and the hanging ring 32 penetrates through a hanging hole preset in the stiffening template 5.
The upper part of the inner suspender 4 passes through an inner suspender hole A preset by the cross beam 2, and an inner adjusting nut 41 is screwed on the part where the inner suspender 4 passes through for limiting; the lower part of the inner suspender 4 passes through an inner suspender hole B preset in the stiffening template 5, and a lower fixing nut 42 is arranged at the penetrating part for limiting; the cushion block 43 is arranged at the contact part of the lower fixing nut 42 and the stiffening template 5.
The bottom of the cross beam 2 is welded with a limiting lantern ring 23, and the limiting lantern ring 23 is sleeved on the support column 1; the bolt 24 passes through the stop collar 23 and the preformed hole on the support column 1.
And a pvc pipe is sleeved outside the inner suspender 4 and used for isolating concrete.
3 angle steel stiffening ribs are longitudinally welded on the stiffening template 5, and one angle steel stiffening rib is transversely welded every 50 cm.
The construction method of the movable formwork structure for the concrete construction of the cantilever wing plate of the steel-concrete composite beam comprises the following steps of:
(1) after the parts are preprocessed according to drawings, all the prefabricated parts are transported to the site, and steel pipe supporting columns are installed at the tops of flange plates on the steel box girders according to design positions;
(2) welding steel pipe support columns on the tops of the upper flange plates of the steel box girders according to the designed positions, and welding mould-closing limiting clamping grooves on the edges of the upper flange plates of the steel box girders;
(3) welding a cross beam and a longitudinal beam into a whole at a ground leveling position or on a steel box girder, mounting a pulley below the longitudinal beam, mounting an outer suspension rod and an inner suspension rod at two ends of the cross beam, mounting a stiffening template on suspension rings of the outer suspension rods, hoisting the whole formwork, butting a limiting lantern ring with a corresponding support column, and mounting a bolt;
(4) drawing the stiffening template to enable the triangular clamping strip to be embedded into the die assembly limiting clamping groove, connecting the inner side suspender with the stiffening template, and carrying out primary die assembly;
(5) measuring and checking the height of the outer side of the stiffening template, adjusting the height to a designed height through an outer adjusting nut, and tightening an inner adjusting nut to complete die assembly;
(6) and (4) installing bridge deck reinforcing steel bars, cleaning sundries in the template, spraying a release agent, and pouring concrete.
(7) After the concrete is cured to reach the strength, unscrewing the inner adjusting nut, rotating the upper fixing nut, dismantling the inner suspender, and using the dead weight of the stiffening template to enable the stiffening template to rotate around the lifting ring, so that the stiffening template is separated from the concrete surface, and demolding is completed;
(8) removing the bolts on the limiting ring sleeves, jacking the whole die carrier at two ends of the longitudinal beam by using four jacks, laying a profile steel track below the pulleys, unloading the jacks to enable the pulleys to fall on the track, and drawing and walking to a next pouring section;
(9) after the trolley is in place, jacking the whole support at two ends of the longitudinal beam by using four jacks, removing the lower rail of the pulley, and dropping the whole support on the supporting column;
(10) the general pouring from the step (3) to the step (9) to the full-bridge is repeated;
(11) after the strength of the concrete meets the requirement, sequentially removing the stiffening template, the suspender, the cross beam and the longitudinal beam; cutting the support columns of the concrete surface at the exposed part to finish the construction of the upper bridge deck; and the disassembled parts are transported to the next construction site for use or transported back to a material turnover warehouse for maintenance and storage.
Example 1:
the height of a bridge pier of a certain large bridge is 26m, the upper structure is a steel-mixed composite beam, and the width of a wing plate cantilever is 1.1 m. If adopt full hall support construction, need to trade to pack the processing to the support base, and the work load of setting up of support is very big, and the engineering time is long, and the security of operating personnel can't be guaranteed in the setting up of so high support, takes place the pole piece even personnel incident that drops easily. If adopt steel box girder side triangle bracing, then need be at a large amount of connecting pieces of steel box girder surface welding, can become permanent influence to steel box girder outward appearance and knot structure, and the workman need set up interim support and carry out the support and press and demolish the construction to the pterygoid lamina armpit, hardly guarantee on-the-spot welding operation condition, cause great hidden danger to safety and quality. Adopt the utility model discloses, saved manual work and turnover material, reduction of erection time, greatly reduced the cost, the concrete is of high quality, and the security performance is high, does not take place quality and incident.
Example 2:
the height of a bridge pier of a certain large bridge is 34m, the upper structure is a steel-mixed composite beam, and the width of a wing plate cantilever is 1.29 m. According to the practice and experience of case 1, the material turnover in case 1 is used, so that a large amount of labor and materials are saved, the cost is greatly reduced, and the construction period is shortened. By adopting the invention, the concrete has good quality and high safety performance, and no quality and safety accidents occur.

Claims (9)

1. Steel-concrete composite beam encorbelments aerofoil movable mould frame for concrete construction, its characterized in that: set up support column (1) of the mutual symmetry of a plurality of on steel case roof beam flange board (7), install a plurality of crossbeams (2) on support column (1) that correspond, outside jib (3) and inboard jib (4) are installed respectively to crossbeam (2) both ends, and the inside and outside edge of connection stiffening template (5) is suspended in midair to outside jib (3) and inboard jib (4) below, and the inside edge of stiffening template (5) and the marginal chucking fixed connection of two flange boards (7) of steel case roof beam.
2. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: crossbeam (2) below sets up die carrier traveling system, and die carrier traveling system includes: the longitudinal beam (6) is fixed below the cross beam (2), the longitudinal beam (6) and the cross beam (2) form an integral frame, and the longitudinal beam (6) is arranged above a flange plate (7) of the steel box girder; a plurality of pulleys (9) are arranged below the longitudinal beam (6), and the lower part of each pulley (9) is aligned to the track (8);
there are two situations for the position of the rail (8): in the first case, the rail (8) is fixed to the concrete panel already cast; in the second case, the rail (8) is fixed to the steel box girder flange plate (7) without the concrete panel poured, and the pulley (9) is connected to the rail (8) through the pulley leg (10).
3. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: the inner edge of the stiffening template (5) is provided with a triangular clamping strip (51), the edge part of the corresponding steel box girder flange plate (7) is provided with a die-closing limiting clamping groove (71), and the die-closing limiting clamping groove are mutually hooked and fixed.
4. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 3, wherein: and a grout stopping strip is attached to the inner side of the notch of the die closing limiting clamping groove (71).
5. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: the upper part of the outer suspender (3) passes through an outer suspender hole preset in the cross beam (2), and an outer adjusting nut (31) is screwed at the part where the outer suspender (3) passes through for limiting; the lower part of the outer side suspender (3) is provided with a hanging ring (32), and the hanging ring (32) penetrates through a hanging hole preset in the stiffening template (5).
6. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: the upper part of the inner suspender (4) passes through an inner suspender hole A preset by the cross beam (2), and an inner adjusting nut (41) is screwed on the part where the inner suspender (4) passes through for limiting; the lower part of the inner suspender (4) passes through an inner suspender hole B preset in the stiffening template (5), and a lower fixing nut (42) is arranged at the penetrating part for limiting; the part of the lower fixing nut (42) contacted with the stiffening template (5) is provided with a cushion block (43).
7. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: the bottom of the cross beam (2) is welded with a limiting lantern ring (23), and the limiting lantern ring (23) is sleeved on the supporting column (1); the bolt (24) passes through the limit lantern ring (23) and a preformed hole on the support column (1).
8. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: the inner side suspender (4) is externally sleeved with a pvc pipe for isolating concrete.
9. The moving formwork for concrete construction of the cantilever wing plate of the steel-concrete composite beam according to claim 1, wherein: 3 angle steel stiffening ribs are longitudinally welded on the stiffening template (5), and one angle steel stiffening rib is transversely welded every 50 cm.
CN201921859371.XU 2019-10-31 2019-10-31 Movable formwork for concrete construction of overhanging wing plate of steel-concrete composite beam Active CN211420881U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921859371.XU CN211420881U (en) 2019-10-31 2019-10-31 Movable formwork for concrete construction of overhanging wing plate of steel-concrete composite beam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921859371.XU CN211420881U (en) 2019-10-31 2019-10-31 Movable formwork for concrete construction of overhanging wing plate of steel-concrete composite beam

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Publication Number Publication Date
CN211420881U true CN211420881U (en) 2020-09-04

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