CN114182635A - Walking type jacking formwork for high pier of thin-wall pier of bridge and construction method of walking type jacking formwork - Google Patents
Walking type jacking formwork for high pier of thin-wall pier of bridge and construction method of walking type jacking formwork Download PDFInfo
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- CN114182635A CN114182635A CN202111333457.0A CN202111333457A CN114182635A CN 114182635 A CN114182635 A CN 114182635A CN 202111333457 A CN202111333457 A CN 202111333457A CN 114182635 A CN114182635 A CN 114182635A
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- 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
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
- E04G11/28—Climbing forms, i.e. forms which are not in contact with the poured concrete during lifting from layer to layer and which are anchored in the hardened concrete
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
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- Bridges Or Land Bridges (AREA)
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Abstract
The utility model provides a high mound walking jacking die carrier of bridge thin wall pier and construction method thereof, the die carrier includes truss steel platform, truss steel platform bottom is connected in the support steel column, by the support steel column support, the support steel column is supported by the last supporting beam and the lower supporting beam that support at thin wall pier inner wall, be equipped with jacking cylinder between last supporting beam and the lower supporting beam, through the alternative jacking of support beam and lower supporting beam in the extension of jacking cylinder and retraction control, can realize the promotion of mould turning over and operation platform, need not tower crane or crane cooperation, can effectively reduce construction equipment cost input, not only construction safety and quality are more secure, and obviously improved the efficiency of construction of high mound, have the construction work efficiency height, the safe risk is low, the quality is secure, overall stability is high and extra consumption advantage such as low.
Description
Technical Field
The invention relates to the technical field of photovoltaic supports, in particular to a walking type jacking formwork for a high pier of a thin-wall pier of a bridge and a construction method of the walking type jacking formwork.
Background
With the development of society, the economic level of the nation is continuously improved, the traffic transportation requirements and the social transportation requirements are also continuously improved, and the nation starts to vigorously construct a highway network, wherein the bridge construction is one of important components of the highway construction, and the bridge high pier construction is one of the technical difficulties of the highway project. The design of the high pier of the bridge mostly adopts the hollow thin-wall pier which has the advantages of small cross-sectional area, large cross-sectional modulus, light dead weight, better structural rigidity and strength and the like.
The construction of the high pier of the bridge has the characteristics of large construction difficulty and high safety risk, and the conventional construction process comprises the steps of rollover, slip form, hydraulic climbing form and rollover of a common hydraulic jacking formwork. The traditional turnover mould mainly has the following defects: firstly, the construction work efficiency is low, secondly, the occupancy rate to hoisting equipment such as tower crane is higher, thirdly, the construction safety risk is high. The traditional slip form mainly has the following defects: firstly, the appearance quality is poor, secondly, high mound straightness control that hangs down is difficult, and thirdly, has certain construction safety risk. The hydraulic climbing formwork mainly has the following defects: firstly, the construction work efficiency is low, secondly, the occupancy rate to hoisting equipment such as tower cranes is higher, thirdly, the cost investment is higher. The common hydraulic jacking mould frame turnover mould mainly has the following defects: firstly, the material consumption is more, and secondly, the cost investment is higher. Although the construction process is mature in technology and wide in application, the construction process has advantages and disadvantages, and particularly has some uncertainties and limitations in use of projects with tight construction period progress, high quality requirements and high safety risks.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the walking type jacking formwork for the thin-wall pier and the high pier of the bridge and the construction method thereof, wherein the walking type jacking formwork has the advantages of high construction efficiency, low safety risk, guaranteed quality, high overall stability and low additional consumption.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high mound walking jacking die carrier of bridge thin wall pier, includes truss steel platform, truss steel platform bottom is connected in the support steel column, by the support steel column supports, the support steel column is supported in the last supporting beam and the supporting beam of lower support beam of thin wall pier inner wall, go up the supporting beam with be equipped with jacking cylinder between the supporting beam down, through jacking cylinder's the control of stretching out and retracting go up supporting beam with the alternative jacking of supporting beam down, truss steel platform's below is equipped with the scaffold that hangs that is used for the construction of constructor, the periphery of supporting the steel column still is equipped with and is used for pouring, detachable exterior sheathing and interior sheathing promotion is fixed in on the truss steel platform.
Further, go up the supporting beam with the both ends of lower supporting beam are equipped with the landing leg, the landing leg stretches out or retracts through landing leg cylinder control, works as go up the supporting beam or when the lower supporting beam is in the support state, the landing leg passes through the landing leg cylinder stretches out to insert in the predetermined recess of thin wall pier stud inner wall, works as go up the supporting beam or when the lower supporting beam is in the off-state, the landing leg passes through the landing leg cylinder retraction, with predetermined recess breaks away from.
Further, the jacking cylinder with the operating stroke starting point and the terminal point position of landing leg hydro-cylinder all are equipped with contact switch, work as jacking cylinder arrives starting point or terminal point contact during the contact switch, landing leg hydro-cylinder can start work, work as landing leg hydro-cylinder all contacts during the contact switch, jacking cylinder can only start work.
Furthermore, the outer template is lifted and fixed on the truss steel platform through an electric hoist, and the inner template is fixed on the truss steel platform through a chain block.
Further, go up the supporting beam with install the leading wheel on the supporting beam down, the leading wheel is followed thin wall pier stud inner wall rolls.
Further, hang the scaffold frame and include pylon and interior hanger, the pylon hang in the below of truss steel platform, interior hanger hang in the bottom of a supporting beam down.
Furthermore, protective fences are arranged around the truss steel platform.
A construction method of a walking type jacking formwork for a high pier of a thin-wall pier of a bridge comprises the following steps:
the method comprises the following steps: installing an integral truss steel platform on the first-cast thin-wall pier stud, binding and closing steel bars by using an outer template and an inner template, completing a formwork and casting concrete for the first time, and stopping the truss steel platform at the top of the concrete which is just cast after the concrete is cast;
step two: after the concrete reaches the strength, the lower supporting beam is used as a support, the supporting steel column is lifted by a working stroke of an oil cylinder through the jacking of a jacking oil cylinder, and the upper supporting beam is supported on the pier column;
step three: taking the upper supporting beam as a support, and enabling the lower supporting beam to ascend by an oil cylinder working stroke through the contraction of the jacking oil cylinder, and enabling the lower supporting beam to be supported on the pier stud;
step four: and repeating the second step and the third step, and completing the lifting of the truss steel platform and the formwork in a walking jacking mode.
Further, the method also comprises the following step five: the reinforcing steel bars are lifted to the truss steel platform by the tower crane and stacked, and constructors finish the reinforcement binding and acceptance work on the truss steel platform and the hanging scaffold.
Further, the method also comprises the step six: hoisting an outer formwork of lower-layer concrete by using an electric hoist to complete formwork dismantling, lifting the outer formwork to a preset height by using the electric hoist after the formwork is cleaned, and carrying out formwork installation construction;
step seven: and after the steel bars and the templates are installed, the constructors finish concrete pouring work on the truss steel platform and the hanging scaffold and repair the reserved grooves of the pier stud.
The invention has the beneficial effects that:
the alternative jacking of the upper supporting beam and the lower supporting beam is controlled through the extension and retraction of the jacking oil cylinder, so that the lifting of the turnover formwork and the operation platform can be realized, the cooperation of a tower crane or a crane is not needed, and the cost investment of construction equipment can be effectively reduced. The walking type jacking formwork provides an inner and outer multilayer operation platform and a formwork hoisting device for formwork turnover operation, so that operations such as reinforcement binding, formwork dismounting and concrete pouring of the formwork turnover operation are all performed in a multilayer operation platform which is perfectly shielded, not only construction safety and quality are guaranteed, but also construction efficiency of high piers is obviously improved, and the walking type jacking formwork has the advantages of high construction efficiency, low safety risk, guaranteed quality, high overall stability, low additional consumption and the like.
Drawings
FIG. 1 is a schematic structural view of a walking type jacking formwork for a high pier of a thin-wall pier of a bridge;
FIG. 2 is a side view of the walking type jacking formwork for the high pier of the thin-wall pier of the bridge;
FIG. 3 is a schematic view of the support state of the upper support beam or the lower support beam in the walking type jacking formwork of the high pier of the thin-walled pier of the bridge of the invention;
FIG. 4 is a schematic view showing a falling-off state of an upper supporting beam or a lower supporting beam in the walking type jacking formwork for the high pier of the thin-wall pier of the bridge;
FIG. 5 is a schematic view of a step-type jacking formwork construction step I of installing an integral truss steel platform on a first-cast thin-wall pier stud of the bridge thin-wall pier high pier;
FIG. 6 is a schematic view of the construction step of the walking type jacking formwork of the high pier of the thin-wall pier of the bridge of the invention, and the jacking of the supporting steel column;
FIG. 7 is a schematic view of the construction step of the walking type jacking formwork of the high pier of the thin-walled pier of the bridge of the invention and the jacking of the lower supporting beam;
FIG. 8 is a schematic diagram of the construction steps of the walking type jacking formwork of the high pier of the thin-wall pier of the bridge of the invention after lifting;
FIG. 9 is a schematic diagram of hoisting and binding of steel bars in the construction step five of the walking type jacking formwork of the high pier of the thin-wall pier of the bridge;
FIG. 10 is a schematic view of a six-step lifting external formwork in the construction step of the walking type jacking formwork of the high pier of the thin-wall pier of the bridge;
fig. 11 is a schematic diagram of a seventh construction step of pouring concrete for the walking type jacking formwork of the high pier of the thin-wall pier of the bridge;
in the figure, 1-truss steel platform, 2-protective fence, 3-supporting steel column, 4-upper supporting beam, 5-jacking oil cylinder, 6-lower supporting beam, 7-supporting leg, 8-supporting leg oil cylinder, 9-preset groove, 10-thin wall pier column, 11-guide wheel, 12-external hanging frame, 13-internal hanging frame, 14-electric hoist, 15-hydraulic pump station, 16-external formwork and 17-internal formwork.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Referring to fig. 1 and 2, the invention provides a walking type jacking formwork for a high pier of a thin-wall pier of a bridge, which comprises a truss steel platform 1, wherein the size of the outer frame plane of the truss steel platform 1 is 10.79m × 6.29m, and the truss is formed by combining and welding HN200 × 100 and 12# channel steel. The bottom of the truss steel platform 1 is connected to a support steel column 3 and supported by two support steels 3, the support steel column 3 is formed by combining and welding 720 multiplied by 720 square tubes, and the center distance of the two support steel columns 3 is 4.2 m. The supporting steel columns 3 are supported by upper supporting beams 4 and lower supporting beams 6 supported on the inner wall of the thin-walled pier column 10. And protective fences 2 are arranged around the truss steel platform 1 according to the standardized requirements.
As shown in fig. 1, 3 and 4, a jacking cylinder 5 is arranged between the upper supporting beam 4 and the lower supporting beam 6, and the upper supporting beam 4 and the lower supporting beam 6 are alternatively jacked by the extension and retraction of the jacking cylinder 5. The two ends of the upper supporting beam 4 and the lower supporting beam 6 are provided with supporting legs 7, the supporting legs 7 are controlled to extend out or retract through supporting leg oil cylinders 8, when the upper supporting beam 4 or the lower supporting beam 6 is in a supporting state, the supporting legs 7 extend out through the supporting leg oil cylinders 8 and are inserted into preset grooves 9 in the inner wall of the thin-wall pier stud 10, and when the upper supporting beam 4 or the lower supporting beam 6 is in a falling state, the supporting legs 7 retract through the supporting leg oil cylinders 8 and are separated from the preset grooves 9. In order to monitor the in-place condition of the jacking oil cylinder 5 and the supporting leg oil cylinder 8, contact switches are arranged at the starting point and the end point of the working stroke of the jacking oil cylinder 5 and the supporting leg oil cylinder 8, when the jacking oil cylinder 5 reaches the starting point or the end point and contacts the contact switches, the supporting leg oil cylinder 8 can be started to work, and when the supporting leg oil cylinder 8 contacts the contact switches, the jacking oil cylinder 5 can be started to work. The two groups of supporting leg oil cylinders 8 can lead only one group of supporting legs 7 to be recycled through arrangement, and more than one group of supporting legs are always in an extending state. The jacking oil cylinder 5 and the supporting leg oil cylinder 8 are both provided with power sources by a hydraulic pump station 15. The whole formwork walking climbing is realized by the formwork through alternate work among the upper supporting beam 4, the lower supporting beam 6 and the supporting steel column 3, the operation is simple, other mechanical equipment is not needed, the single pouring height is 4m, the circulation is performed once in 2-3 days, and the operation efficiency is high.
Preferably, the upper supporting beam 4 and the lower supporting beam 6 are provided with guide wheels 11, and the guide wheels 11 roll along the inner wall of the thin-wall pier stud 10, so that the overall stability of the jacking mould frame is improved.
As shown in fig. 1 and 2, a hanging scaffold for construction of constructors is arranged below the truss steel platform 1, the hanging scaffold comprises a pylon 12 and an inner hanger 13, the pylon 12 is hung below the truss steel platform 1 and distributed around the thin- wall pier stud 10, 6 layers are arranged, and except for the top layer which is 1.9m high, the rest layers are 2.0m high. The inner hanging frame 13 is hung at the bottom of the lower supporting beam 6 and is 1 layer, and the layer height is 2.0 m. Through interior stores pylon 12 and stores pylon 13 not only conveniently carry out reinforcement and template ann tear the operation open safely, can in time carry out maintenance and decoration to the pier shaft of having pour simultaneously, effectively guarantee construction safety and quality.
The periphery of supporting steel column 3 still is equipped with and is used for pouring, detachable exterior sheathing 16 and interior template 17, and exterior sheathing 16 is every set by 3 the template that the section height is 2.0m and constitutes, and the height is 6m, uses the preparation of 6mm thick steel plate, and the template is according to interval 0.3m establish [10 channel-section steel inferior stupefied to and set up two [14a channel-section steel main stupefied according to interval 1m, inferior stupefied and main stupefied all assembly welding form. The outer formwork 16 is lifted and fixed on the truss steel platform 1 through the electric hoist 14, after the next section of concrete is poured each time, the outer formwork 16 of the lower section 2 is removed, the electric hoist 14 is adopted for lifting integrally, and the outer formwork 16 of the topmost section is kept not to be removed as a support. Each set of the inner templates 17 is composed of 2 sections of templates with the height of 2.0+2.1m, and the height is 4.1 m. The inner formwork 17 is lifted and fixed on the truss steel platform 1 through the chain block, after the next section of concrete is poured each time, the inner formwork is lifted integrally along with the chain block after the formwork is removed, and the bottom of the inner formwork is clamped with 0.1m of concrete. The templates at the inner chamfer angles are connected by hinges so as to be convenient for removing the templates, and the design of the other templates is the same as that of the outer template. The outer template 16 is integrally lifted through the electric hoist 14, the inner template 17 is integrally lifted along with the chain block, and the cooperation of hoisting equipment is not needed, so that the operation safety risk is reduced.
According to the walking type jacking formwork for the high pier of the thin-wall pier of the bridge, the alternating jacking of the upper supporting beam 4 and the lower supporting beam 6 is controlled through the extension and retraction of the jacking oil cylinder 5, so that the lifting of the rollover and the operation platform can be realized, the cooperation of a tower crane or a crane is not needed, and the cost input of construction equipment can be effectively reduced. The walking type jacking formwork provides an inner and outer multilayer operation platform and a formwork hoisting device for formwork turnover operation, so that operations such as reinforcement binding, formwork dismounting, concrete pouring and the like of the formwork turnover operation are all carried out in a multilayer operation platform which is perfectly shielded, not only is construction safety and quality guaranteed, but also the construction efficiency of high piers is obviously improved, and better benefits are obtained in project application.
As shown in fig. 5 to 11, the invention further provides a construction method of the walking type jacking formwork for the high pier of the thin-wall pier of the bridge, which comprises the following steps:
as shown in fig. 5, the first step is that the integral truss steel platform 1 is installed on the first-cast thin-wall pier stud 10, the outer template 16 and the inner template 17 are used for binding reinforcing steel bars, closing a mold, completing a mold frame and casting concrete for the first time, and after the casting of the concrete is completed, the truss steel platform 1 stays at the top of the concrete which is just cast.
As shown in fig. 6, step two: after the concrete reaches the strength, the lower supporting beam 6 is used as a support, the supporting steel column 3 is lifted by one cylinder working stroke (1m) through jacking of the jacking cylinder 5, the upper supporting beam 4 is supported on the pier stud 10, and at the moment, the supporting leg 7 of the upper supporting beam 4 extends out through the supporting leg cylinder 8 and is inserted into the preset groove 9 of the thin-wall pier stud 10 for supporting. Before the supporting steel column 3 is lifted, it is ensured that no hook is arranged among the supporting steel column 3, the upper supporting beam 4 and the pier stud 10.
As shown in fig. 7, step three: the upper supporting beam 4 is used for supporting, the jacking oil cylinder 5 contracts to enable the lower supporting beam 6 to ascend by an oil cylinder working stroke (1m), the lower supporting beam 6 is supported on the pier stud 10, and at the moment, the supporting legs 7 of the lower supporting beam 6 extend out through the supporting leg oil cylinders 8 and are inserted into the preset grooves 9 of the thin-wall pier stud 10 for supporting. Before the lower support beam 6 is lifted, no hook is ensured between the lower support beam 6 and the support steel column 3 and the pier stud 10.
As shown in fig. 8, step four: and repeating the second step and the third step, and completing the lifting of the truss steel platform 1 and the die carrier in a walking jacking mode. And after the lifting of the integral truss steel platform 1 and the die carrier is finished, the upper supporting beam 4, the lower supporting beam 6 and the supporting steel column 3 are fastened.
As in fig. 9, step five: the reinforcing steel bars are lifted to the truss steel platform 1 by the tower crane to be stacked, and constructors finish the work of reinforcing steel bar binding and acceptance inspection on the truss steel platform 1 and the suspended scaffold.
As shown in fig. 10, step six: and hoisting the outer formwork 16 of the lower concrete layer by using the electric hoist 14 to finish formwork dismantling, cleaning the surface of the outer formwork 16 on the lower suspension scaffold, and lifting the outer formwork 16 to a preset height by using the electric hoist 14 to carry out formwork installation construction.
As in fig. 11, step seven: after the reinforcing steel bars and the templates are installed, the constructors finish concrete pouring work on the truss steel platform 1 and the hanging scaffold, and repair the reserved grooves 9 of the pier studs 10. And finishing an integral construction process.
According to the walking type jacking formwork, when the formwork is overturned, the upper supporting beam 4 and the lower supporting beam 6 are controlled to be alternatively jacked through the extension and retraction of the jacking oil cylinder 5, so that the formwork can be jacked and an operation platform can be lifted, a tower crane or a crane is not required to be matched, and the cost input of construction equipment can be effectively reduced. The practical construction effect verifies that the formwork is used for circulating for 24-32 hours once, the casting height is 4m each time, and compared with the traditional process, the formwork has the advantages of high construction efficiency, low safety risk, guaranteed quality, high overall stability, low additional consumption and the like.
As shown in table 1 below, the walking-type jacking formwork rollover of the present invention has higher comprehensive advantages compared with the traditional construction processes such as rollover, slip form, hydraulic climbing formwork and ordinary hydraulic jacking formwork rollover.
TABLE 1 comparative analysis table for different construction techniques
Compared with the traditional construction processes of turning over, sliding formwork, hydraulic creeping formwork, common hydraulic jacking formwork turning over and the like, the walking type jacking formwork has the advantages of high construction efficiency, low safety risk, guaranteed quality, high overall stability, low additional consumption and the like.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a high mound walking jacking die carrier of bridge thin wall pier which characterized in that includes: truss steel platform, truss steel platform bottom is connected in the support steel column, by the support steel column supports, the support steel column is supported in the last supporting beam and the supporting beam down of thin wall pier stud inner wall, go up the supporting beam with be equipped with jacking cylinder between the supporting beam down, through jacking cylinder stretch out with withdrawal control go up the supporting beam with the alternative jacking of supporting beam down, the below of truss steel platform is equipped with the scaffold that hangs that is used for supplying and gives executing workman's construction, the periphery of support steel column still is equipped with and is used for pouring, detachable exterior sheathing and interior sheathing, the exterior sheathing with the interior sheathing promotes and is fixed in on the truss steel platform.
2. The walking type jacking formwork for the high pier of the thin-wall pier of the bridge according to claim 1, wherein: go up the supporting beam with the both ends of supporting beam are equipped with the landing leg down, the landing leg stretches out or the withdrawal through landing leg cylinder control, works as go up the supporting beam or when the supporting beam is in the support state down, the landing leg passes through the landing leg cylinder stretches out to insert in the predetermined recess of thin wall pier inner wall, works as go up the supporting beam or when the supporting beam is in the off-state down, the landing leg passes through the landing leg cylinder withdrawal, with predetermined recess breaks away from.
3. The walking type jacking formwork for the high pier of the thin-wall pier of the bridge according to claim 2, wherein: the jacking cylinder with the working stroke starting point and the terminal point position of landing leg hydro-cylinder all are equipped with contact switch, work as jacking cylinder arrives starting point or terminal point contact during contact switch, the landing leg hydro-cylinder can start work, work as the landing leg hydro-cylinder all contacts during contact switch, jacking cylinder can start work.
4. The walking type jacking formwork for the high pier of the thin-wall pier of the bridge according to claim 1, wherein: the outer template is lifted and fixed on the truss steel platform through an electric hoist, and the inner template is fixed on the truss steel platform through a chain block.
5. The walking type jacking formwork for the high pier of the thin-wall pier of the bridge according to claim 1, wherein: go up the supporting beam with install the leading wheel on the supporting beam down, the leading wheel is followed thin wall pier stud inner wall rolls.
6. The walking type jacking formwork for the high pier of the thin-wall pier of the bridge according to claim 1, wherein: the hanging scaffold comprises a pylon and an inner hanger, the pylon is hung below the truss steel platform, and the inner hanger is hung at the bottom of the lower supporting beam.
7. The walking type jacking formwork for the high pier of the thin-wall pier of the bridge according to claim 1, wherein: and protective fences are arranged around the truss steel platform.
8. A construction method of a walking type jacking formwork for a high pier of a thin-wall pier of a bridge is characterized by comprising the following steps:
the method comprises the following steps: installing an integral truss steel platform on the first-cast thin-wall pier stud, binding and closing steel bars by using an outer template and an inner template, completing a formwork and casting concrete for the first time, and stopping the truss steel platform at the top of the concrete which is just cast after the concrete is cast;
step two: after the concrete reaches the strength, the lower supporting beam is used as a support, the supporting steel column is lifted by a working stroke of an oil cylinder through the jacking of a jacking oil cylinder, and the upper supporting beam is supported on the pier column;
step three: taking the upper supporting beam as a support, and enabling the lower supporting beam to ascend by an oil cylinder working stroke through the contraction of the jacking oil cylinder, and enabling the lower supporting beam to be supported on the pier stud;
step four: and repeating the second step and the third step, and completing the lifting of the truss steel platform and the formwork in a walking jacking mode.
9. The construction method according to claim 8, wherein: further comprises the following steps: the reinforcing steel bars are lifted to the truss steel platform by the tower crane and stacked, and constructors finish the reinforcement binding and acceptance work on the truss steel platform and the hanging scaffold.
10. The construction method according to claim 9, wherein: further comprises the following steps: hoisting an outer formwork of lower-layer concrete by using an electric hoist to complete formwork dismantling, lifting the outer formwork to a preset height by using the electric hoist after the formwork is cleaned, and carrying out formwork installation construction;
step seven: and after the steel bars and the templates are installed, the constructors finish concrete pouring work on the truss steel platform and the hanging scaffold and repair the reserved grooves of the pier stud.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111333457.0A CN114182635A (en) | 2021-11-11 | 2021-11-11 | Walking type jacking formwork for high pier of thin-wall pier of bridge and construction method of walking type jacking formwork |
| PCT/CN2022/094480 WO2023082594A1 (en) | 2021-11-11 | 2022-05-23 | Walking-type bridge thin-wall pier high-pier jacking formwork and construction method therefor |
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| CN202111333457.0A CN114182635A (en) | 2021-11-11 | 2021-11-11 | Walking type jacking formwork for high pier of thin-wall pier of bridge and construction method of walking type jacking formwork |
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| CN115198655A (en) * | 2022-07-28 | 2022-10-18 | 中电建路桥集团有限公司 | Equipment for assisting in assembling and mounting hydraulic creeping formwork |
| WO2023082594A1 (en) * | 2021-11-11 | 2023-05-19 | 中交第四航务工程局有限公司 | Walking-type bridge thin-wall pier high-pier jacking formwork and construction method therefor |
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| CN116408882A (en) * | 2023-06-07 | 2023-07-11 | 中交第一航务工程局有限公司 | Caisson prefabrication construction device and caisson prefabrication construction method |
| CN118004904B (en) * | 2024-04-08 | 2024-06-25 | 中铁三局集团有限公司 | Hoisting type construction work platform |
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| CN101949211B (en) * | 2010-10-29 | 2012-01-04 | 中建三局建设工程股份有限公司 | Low-position few-fulcrum modularized integral jacking steel platform formwork system |
| CN103741947B (en) * | 2014-01-17 | 2015-05-20 | 上海建工集团股份有限公司 | Tube-frame-supporting type hydraulic climbing integral steel platform formwork truss layer construction method |
| CN205557336U (en) * | 2015-11-26 | 2016-09-07 | 柳州欧维姆机械股份有限公司 | Construct high mound from promoting walking template device |
| CN106592826A (en) * | 2016-11-21 | 2017-04-26 | 上海建工集团股份有限公司 | Construction method for cylindrical frame supporting type hydraulic-climbing integral steel platform formwork shear steel plate layer |
| CN208280592U (en) * | 2018-01-15 | 2018-12-25 | 上海宝冶集团有限公司 | Automatic climbing formula hoistway cylinder mould panel assembly |
| US20210156156A1 (en) * | 2019-11-27 | 2021-05-27 | OM Engineering Pty Ltd | Independent self-climbing form system for building vertical structures |
| CN114182635A (en) * | 2021-11-11 | 2022-03-15 | 中交第四航务工程局有限公司 | Walking type jacking formwork for high pier of thin-wall pier of bridge and construction method of walking type jacking formwork |
-
2021
- 2021-11-11 CN CN202111333457.0A patent/CN114182635A/en active Pending
-
2022
- 2022-05-23 WO PCT/CN2022/094480 patent/WO2023082594A1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023082594A1 (en) * | 2021-11-11 | 2023-05-19 | 中交第四航务工程局有限公司 | Walking-type bridge thin-wall pier high-pier jacking formwork and construction method therefor |
| CN115198655A (en) * | 2022-07-28 | 2022-10-18 | 中电建路桥集团有限公司 | Equipment for assisting in assembling and mounting hydraulic creeping formwork |
| CN115198655B (en) * | 2022-07-28 | 2024-06-07 | 中电建路桥集团有限公司 | Equipment for assisting in combined installation of hydraulic climbing formwork |
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| Publication number | Publication date |
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| WO2023082594A1 (en) | 2023-05-19 |
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