CN104131515A - Method for constructing cast-in-place box beam by means of movable formwork - Google Patents
Method for constructing cast-in-place box beam by means of movable formwork Download PDFInfo
- Publication number
- CN104131515A CN104131515A CN201410410452.7A CN201410410452A CN104131515A CN 104131515 A CN104131515 A CN 104131515A CN 201410410452 A CN201410410452 A CN 201410410452A CN 104131515 A CN104131515 A CN 104131515A
- Authority
- CN
- China
- Prior art keywords
- girder
- supporting leg
- oil cylinder
- movable formwork
- supported
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a method for constructing a cast-in-place box beam by means of a movable formwork and relates to a method for constructing a cast-in-place box beam by means of an upward-moving movable formwork. The method for constructing the cast-in-place box beam by means of the movable formwork mainly aims to solve the problem that in the prior art, the construction speed of the cast-in-place box beam is low. According to the method for constructing the cast-in-place box beam by means of the movable formwork, the movable formwork is an upward-moving movable formwork. When the beam is constructed, a main beam of the movable formwork is supported by a front supporting leg and a rear supporting leg, the front supporting legs is supported by the front portion of the tops of front piers, and the rear supporting leg is supported by the front end of the constructed box beam; a bottom die composed of a left piece and a right piece and an outer die are hung on a main beam through a left transverse truss and a right transverse truss, opening and closing are achieved through pushing and pulling of an oil cylinder, and thus die assembly and separation are achieved. When the beam passes through a hole, a lower guide beam is installed on the tops of two front piers through the main beam firstly, then the weight of the front supporting leg is transferred to an auxiliary supporting leg and the lower guide beam, the front supporting leg bears no load, and finally the main beam is pushed by a pier power system to move forwards to pass through the hole under the condition that the main beam is simply supported by the auxiliary supporting leg and the rear supporting leg; after the beam passes through the hole, the lower guide beam is lifted by the main beam to move forwards, and then the outer die can be folded. The method for constructing the cast-in-place box beam by means of the movable formwork has the advantage that the construction speed is high.
Description
Technical field:
The present invention relates to a kind of construction method of utilizing upstroke movable framework cast in situs case beam.
Background technology:
When construction of cast-in-situ box-beam, the downlink movable mould frames that adopt are constructed more at present, but it does not use while being suitable for Shui Zhongdun, hollow pier, first and last across complex working condition constructions such as constructions, it also needs to take a large amount of space under bridges in addition, and mobile also inconvenient, and speed of application is slow.
Summary of the invention:
When technical problem to be solved by this invention is to provide the complex working condition constructions such as a kind of Shui Zhongdun of being applicable to, hollow pier, use, do not take space under bridge, the box construction method of conveniently moving.
Above-mentioned purpose is achieved in that mobile formwork used is upstroke movable framework, and it adopts bridge floor upper support, one-time-concreting one to construct across the method for PC beam.By load bang path, can be divided into the systems such as exterior sheathing and internal mold, mould bases and die opening mechanism, outrigger, arm and suspension rod, girder, front and back outrigger support mechanism, the auxiliary supporting leg of vertical shift.
Operating principle: the girder of mobile formwork, under the effect of supporting oil cylinder and carrying roller roller box, can be realized lifting and vertical shift action; Mould bases and template complete the traversing unlatching of bed die frame and closed action under the effect of mould bases opening mechanism; Mould bases is suspended on main tank soffit by outrigger, arm and suspension rod, utilizes the camber of rod-adjurstable adjusting template, by the line style elevation at the bottom of designing requirement adjustment beam.
During beam processed, before and after being supported in, the girder of mobile formwork on two supporting legs, is simply-supported state; Front leg strut is supported in front square pier and pushes up inclined to one side front position, and rear support leg is supported in the front end that becomes case beam; Left and right two-piece type bed die and external mold hang on girder by two of left and right transverse truss, by oil cylinder push-and-pull folding, realize matched moulds and the demoulding.
During via hole, first by girder, lower nose girder is installed on to the place ahead two Dun Ding, is simply-supported state, then front leg strut weight is transferred on auxiliary supporting leg and lower nose girder, front leg strut comes to nothing, and last girder promotes reach via hole by crossing pier dynamical system under auxiliary supporting leg and rear support leg simply-supported state; After via hole completes, by girder, by the reach of slinging of lower nose girder, vacate position, can close up external mold, beam complete machine main performance processed adapts to concrete box girder again:
Beam method processed: on-the-spot cast-in-situ, two ends stretch-draw (reserved stretch-draw space, case beam two ends); Specific construction step:
Step 1:
A, box girder tensioning are complete, remove the loose mould of Dun Ding and Dun Ding place side form to drawing facility;
B, dismounting suspension rod, dismounting bed die and side form are in length and breadth to connecting bolt, and decentering is laterally to connecting bolt;
C, auxiliary support oil cylinder stretch out with bridge floor and hold out against, and rear support leg oil cylinder is regained to come to nothing and hang and moved forward to assigned address;
D, auxiliary supporting leg and front leg strut supporting oil cylinder are regained and are come to nothing, complete machine decline 0.27m;
E, the traversing unlatching of bed die frame temporary locking, prepare to move forward for the first time via hole.
Step 2:
A, startup mobile formwork vertical shift mechanism, stop after complete machine reach 10.7m;
B, mobile formwork rear support leg oil cylinder stretch out with girder conversion fulcrum bracket and hold out against, and remove locking between front leg strut and pier top;
C, rear support leg oil cylinder stretch out jacking 0.1m, and front leg strut comes to nothing, and prepare hanging reach.
Step 3:
The reserved boom hole locking of a, auxiliary supporting leg and bridge floor;
After b, front leg strut come to nothing, hanging moves forward to front pier top assigned address and installs, and by column and the interim diagonal member tensioning of Dun Ding, and locks between the built-in fitting of pier top, confirm on inspection errorless after, rear support leg oil cylinder is regained, the preparation via hole that moves forward for the second time.
Step 4:
A, start mobile formwork vertical shift mechanism, complete machine moves forward after 22 m and puts in place;
B, the traversing bed die frame of closing, connect connecting bolt between the mould bases of left and right;
C, front and back support oil cylinder jacking 0.27 m are to duty locking;
D, installation suspension rod are also adjusted, and template is measured and adjusted, and removes the interim diagonal member of front leg strut column;
E, colligation base plate, web reinforcement and presstressed reinforcing steel;
F, that reassembling type internal mold is installed is complete;
G, colligation top board reinforcing bar and presstressed reinforcing steel;
H, build box beam concrete health;
I, concrete curing, to stretch-draw intensity, carry out prestressed stretch-draw operation.
Advantage of the present invention is: while being applicable to the complex working condition constructions such as Shui Zhongdun, hollow pier, tunnel face, uses, do not take space under bridge, and conveniently moving, speed of application is fast, and effect is high.
The specific embodiment:
Mobile formwork used is upstroke movable framework, and it adopts bridge floor upper support, one-time-concreting one to construct across the method for PC beam.By load bang path, can be divided into the systems such as exterior sheathing and internal mold, mould bases and die opening mechanism, outrigger, arm and suspension rod, girder, front and back outrigger support mechanism, the auxiliary supporting leg of vertical shift.
Operating principle: the girder of mobile formwork, under the effect of supporting oil cylinder and carrying roller roller box, can be realized lifting and vertical shift action; Mould bases and template complete the traversing unlatching of bed die frame and closed action under the effect of mould bases opening mechanism; Mould bases is suspended on main tank soffit by outrigger, arm and suspension rod, utilizes the camber of rod-adjurstable adjusting template, by the line style elevation at the bottom of designing requirement adjustment beam.
During beam processed, before and after being supported in, the girder of mobile formwork on two supporting legs, is simply-supported state; Front leg strut is supported in front square pier and pushes up inclined to one side front position, and rear support leg is supported in the front end that becomes case beam; Left and right two-piece type bed die and external mold hang on girder by two of left and right transverse truss, by oil cylinder push-and-pull folding, realize matched moulds and the demoulding.
During via hole, first by girder, lower nose girder is installed on to the place ahead two Dun Ding, is simply-supported state, then front leg strut weight is transferred on auxiliary supporting leg and lower nose girder, front leg strut comes to nothing, and last girder promotes reach via hole by crossing pier dynamical system under auxiliary supporting leg and rear support leg simply-supported state; After via hole completes, by girder, by the reach of slinging of lower nose girder, vacate position, can close up external mold, beam complete machine main performance processed adapts to concrete box girder again:
Beam method processed: on-the-spot cast-in-situ, two ends stretch-draw (reserved stretch-draw space, case beam two ends); Specific construction step:
Step 1:
A, box girder tensioning are complete, remove the loose mould of Dun Ding and Dun Ding place side form to drawing facility;
B, dismounting suspension rod, dismounting bed die and side form are in length and breadth to connecting bolt, and decentering is laterally to connecting bolt;
C, auxiliary support oil cylinder stretch out with bridge floor and hold out against, and rear support leg oil cylinder is regained to come to nothing and hang and moved forward to assigned address;
D, auxiliary supporting leg and front leg strut supporting oil cylinder are regained and are come to nothing, complete machine decline 0.27m;
E, the traversing unlatching of bed die frame temporary locking, prepare to move forward for the first time via hole.
Step 2:
A, startup mobile formwork vertical shift mechanism, stop after complete machine reach 10.7m;
B, mobile formwork rear support leg oil cylinder stretch out with girder conversion fulcrum bracket and hold out against, and remove locking between front leg strut and pier top;
C, rear support leg oil cylinder stretch out jacking 0.1m, and front leg strut comes to nothing, and prepare hanging reach.
Step 3:
The reserved boom hole locking of a, auxiliary supporting leg and bridge floor;
After b, front leg strut come to nothing, hanging moves forward to front pier top assigned address and installs, and by column and the interim diagonal member tensioning of Dun Ding, and locks between the built-in fitting of pier top, confirm on inspection errorless after, rear support leg oil cylinder is regained, the preparation via hole that moves forward for the second time.
Step 4:
A, start mobile formwork vertical shift mechanism, complete machine moves forward after 22 m and puts in place;
B, the traversing bed die frame of closing, connect connecting bolt between the mould bases of left and right;
C, front and back support oil cylinder jacking 0.27 m are to duty locking;
D, installation suspension rod are also adjusted, and template is measured and adjusted, and removes the interim diagonal member of front leg strut column;
E, colligation base plate, web reinforcement and presstressed reinforcing steel;
F, that reassembling type internal mold is installed is complete;
G, colligation top board reinforcing bar and presstressed reinforcing steel;
H, build box beam concrete health;
I, concrete curing, to stretch-draw intensity, carry out prestressed stretch-draw operation.
Claims (1)
1. box construction method, is characterized in that: mobile formwork used is upstroke movable framework, and it adopts bridge floor upper support, one-time-concreting one to construct across the method for PC beam; By load bang path, can be divided into the systems such as exterior sheathing and internal mold, mould bases and die opening mechanism, outrigger, arm and suspension rod, girder, front and back outrigger support mechanism, the auxiliary supporting leg of vertical shift;
Operating principle: the girder of mobile formwork, under the effect of supporting oil cylinder and carrying roller roller box, can be realized lifting and vertical shift action; Mould bases and template complete the traversing unlatching of bed die frame and closed action under the effect of mould bases opening mechanism; Mould bases is suspended on main tank soffit by outrigger, arm and suspension rod, utilizes the camber of rod-adjurstable adjusting template, by the line style elevation at the bottom of designing requirement adjustment beam;
During beam processed, before and after being supported in, the girder of mobile formwork on two supporting legs, is simply-supported state; Front leg strut is supported in front square pier and pushes up inclined to one side front position, and rear support leg is supported in the front end that becomes case beam; Left and right two-piece type bed die and external mold hang on girder by two of left and right transverse truss, by oil cylinder push-and-pull folding, realize matched moulds and the demoulding;
During via hole, first by girder, lower nose girder is installed on to the place ahead two Dun Ding, is simply-supported state, then front leg strut weight is transferred on auxiliary supporting leg and lower nose girder, front leg strut comes to nothing, and last girder promotes reach via hole by crossing pier dynamical system under auxiliary supporting leg and rear support leg simply-supported state; After via hole completes, by girder, by the reach of slinging of lower nose girder, vacate position, can close up external mold, beam complete machine main performance processed adapts to concrete box girder again:
Beam method processed: on-the-spot cast-in-situ, two ends stretch-draw; Specific construction step:
Step 1:
A, box girder tensioning are complete, remove the loose mould of Dun Ding and Dun Ding place side form to drawing facility;
B, dismounting suspension rod, dismounting bed die and side form are in length and breadth to connecting bolt, and decentering is laterally to connecting bolt;
C, auxiliary support oil cylinder stretch out with bridge floor and hold out against, and rear support leg oil cylinder is regained to come to nothing and hang and moved forward to assigned address;
D, auxiliary supporting leg and front leg strut supporting oil cylinder are regained and are come to nothing, complete machine decline 0.27m;
E, the traversing unlatching of bed die frame temporary locking, prepare to move forward for the first time via hole;
Step 2:
A, startup mobile formwork vertical shift mechanism, stop after complete machine reach 10.7m;
B, mobile formwork rear support leg oil cylinder stretch out with girder conversion fulcrum bracket and hold out against, and remove locking between front leg strut and pier top;
C, rear support leg oil cylinder stretch out jacking 0.1m, and front leg strut comes to nothing, and prepare hanging reach;
Step 3:
The reserved boom hole locking of a, auxiliary supporting leg and bridge floor;
After b, front leg strut come to nothing, hanging moves forward to front pier top assigned address and installs, and by column and the interim diagonal member tensioning of Dun Ding, and locks between the built-in fitting of pier top, confirm on inspection errorless after, rear support leg oil cylinder is regained, the preparation via hole that moves forward for the second time;
Step 4:
A, start mobile formwork vertical shift mechanism, complete machine moves forward after 22 m and puts in place;
B, the traversing bed die frame of closing, connect connecting bolt between the mould bases of left and right;
C, front and back support oil cylinder jacking 0.27 m are to duty locking;
D, installation suspension rod are also adjusted, and template is measured and adjusted, and removes the interim diagonal member of front leg strut column;
E, colligation base plate, web reinforcement and presstressed reinforcing steel;
F, that reassembling type internal mold is installed is complete;
G, colligation top board reinforcing bar and presstressed reinforcing steel;
H, build box beam concrete health;
I, concrete curing, to stretch-draw intensity, carry out prestressed stretch-draw operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410452.7A CN104131515A (en) | 2014-08-20 | 2014-08-20 | Method for constructing cast-in-place box beam by means of movable formwork |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410410452.7A CN104131515A (en) | 2014-08-20 | 2014-08-20 | Method for constructing cast-in-place box beam by means of movable formwork |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104131515A true CN104131515A (en) | 2014-11-05 |
Family
ID=51804355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410410452.7A Pending CN104131515A (en) | 2014-08-20 | 2014-08-20 | Method for constructing cast-in-place box beam by means of movable formwork |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104131515A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988990A (en) * | 2015-05-25 | 2015-10-21 | 中建三局第一建设工程有限责任公司 | Supporting bracket used for jacking framework system and telescoping bracket supporting method by the use of same |
| CN105421251A (en) * | 2015-11-18 | 2016-03-23 | 同济大学 | Plate-girder jacking support mechanism and plate-girder jacking support tool |
| CN105970822A (en) * | 2016-06-03 | 2016-09-28 | 中铁四局集团有限公司 | 50 m twin-deck overlane type movable scaffold and corresponding beam manufacturing construction method thereof |
| CN107829374A (en) * | 2017-12-13 | 2018-03-23 | 中国铁建大桥工程局集团有限公司 | Highway prestress concrete box girder mobile formwork and construction method of encorbelmenting |
| CN111996916A (en) * | 2020-08-04 | 2020-11-27 | 中交第二航务工程局有限公司 | Cast-in-place box girder integrated construction equipment and construction method thereof |
| CN113981835A (en) * | 2021-11-24 | 2022-01-28 | 通号建设集团有限公司 | Movable formwork and hole passing method thereof |
| CN114102841A (en) * | 2021-12-13 | 2022-03-01 | 上海申邦市政钢结构厂 | Automatic mold opening and closing control system and control method for box girder mold core |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146718A (en) * | 1999-11-22 | 2001-05-29 | Kawaju Koji Kk | Bridge floor slab projection moving and supporting structure |
| DE202005003790U1 (en) * | 2005-02-28 | 2006-07-13 | Feig, Ewald | Mobile scaffold |
| CN101205702A (en) * | 2007-12-05 | 2008-06-25 | 中铁大桥局股份有限公司 | Beam-form unified movable mould frame |
| CN203080416U (en) * | 2012-12-28 | 2013-07-24 | 郑州市华中建机有限公司 | Bridge girder erection machine |
| CN203768814U (en) * | 2014-03-08 | 2014-08-13 | 中交第三公路工程局有限公司 | High-pier minor-radius curve cast-in-situ box girder novel moving die carrier |
-
2014
- 2014-08-20 CN CN201410410452.7A patent/CN104131515A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146718A (en) * | 1999-11-22 | 2001-05-29 | Kawaju Koji Kk | Bridge floor slab projection moving and supporting structure |
| DE202005003790U1 (en) * | 2005-02-28 | 2006-07-13 | Feig, Ewald | Mobile scaffold |
| CN101205702A (en) * | 2007-12-05 | 2008-06-25 | 中铁大桥局股份有限公司 | Beam-form unified movable mould frame |
| CN203080416U (en) * | 2012-12-28 | 2013-07-24 | 郑州市华中建机有限公司 | Bridge girder erection machine |
| CN203768814U (en) * | 2014-03-08 | 2014-08-13 | 中交第三公路工程局有限公司 | High-pier minor-radius curve cast-in-situ box girder novel moving die carrier |
Non-Patent Citations (2)
| Title |
|---|
| 何艺滨: "900t上行式移动模架造桥机的设计与实践", 《工程科技II辑》 * |
| 潘春凤等: "客运专线双线箱梁施工上行式移动模架设计", 《施工技术》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104988990A (en) * | 2015-05-25 | 2015-10-21 | 中建三局第一建设工程有限责任公司 | Supporting bracket used for jacking framework system and telescoping bracket supporting method by the use of same |
| CN104988990B (en) * | 2015-05-25 | 2017-08-01 | 中建三局第一建设工程有限责任公司 | Support bracket and its support telescopic bracket method for jacking formwork system |
| CN105421251A (en) * | 2015-11-18 | 2016-03-23 | 同济大学 | Plate-girder jacking support mechanism and plate-girder jacking support tool |
| CN105421251B (en) * | 2015-11-18 | 2017-04-05 | 同济大学 | Plate-girder jacking supporting mechanism, plate-girder jacking supporting tool |
| CN105970822A (en) * | 2016-06-03 | 2016-09-28 | 中铁四局集团有限公司 | 50 m twin-deck overlane type movable scaffold and corresponding beam manufacturing construction method thereof |
| CN107829374A (en) * | 2017-12-13 | 2018-03-23 | 中国铁建大桥工程局集团有限公司 | Highway prestress concrete box girder mobile formwork and construction method of encorbelmenting |
| CN111996916A (en) * | 2020-08-04 | 2020-11-27 | 中交第二航务工程局有限公司 | Cast-in-place box girder integrated construction equipment and construction method thereof |
| CN113981835A (en) * | 2021-11-24 | 2022-01-28 | 通号建设集团有限公司 | Movable formwork and hole passing method thereof |
| CN113981835B (en) * | 2021-11-24 | 2024-04-09 | 通号建设集团有限公司 | Movable die carrier and hole passing method thereof |
| CN114102841A (en) * | 2021-12-13 | 2022-03-01 | 上海申邦市政钢结构厂 | Automatic mold opening and closing control system and control method for box girder mold core |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104131515A (en) | Method for constructing cast-in-place box beam by means of movable formwork | |
| CN203768814U (en) | High-pier minor-radius curve cast-in-situ box girder novel moving die carrier | |
| CN103255726B (en) | A kind of construction method of continuous beam arch combination bridge | |
| CN105155423A (en) | Upward moving type movable formwork for continuous box girder construction | |
| CN202658536U (en) | Device for synchronous construction of continuous girder bridge cantilever side span cast-in-situ section and folding section | |
| KR20140084107A (en) | Self-Launching Movable Scaffolding System | |
| CN205805577U (en) | A kind of arch wall type open cut tunnel chassis | |
| CN103541744A (en) | Tire walking full-hydraulic lining trolley | |
| CN109338894B (en) | Construction method for pouring wide and narrow box girder by movable formwork | |
| CN104564104A (en) | Trolley system used for tunnel lining | |
| CN104947604B (en) | A kind of fast quick change frame construction method of high-speed railway 900t concrete box girders | |
| CN103195450A (en) | Hydraulic tunnel inverted arch operation trolley and inverted arch construction method | |
| CN105908629B (en) | Downlink movable mould frame and its application method for combined highway and metro section highway box beam | |
| CN101864731A (en) | Mobile framework equipment | |
| CN216765936U (en) | Cast-in-place concrete frame beam regularization template structure | |
| CN204997807U (en) | Prefabricated little case roof beam centre form device | |
| CN205112085U (en) | Hydraulic pressure centre form construction system | |
| CN201713764U (en) | Movable formwork apparatus | |
| CN108005114A (en) | A kind of piping lane pours mould | |
| CN203603928U (en) | Rubber-tyred walking full-hydraulic lining trolley | |
| CN210948697U (en) | Door type steel formwork supporting system for construction of rectangular tunnel secondary lining structure | |
| CN207775925U (en) | A kind of piping lane pours mold | |
| CN212534206U (en) | Cast-in-place formula piping lane erects wall construction platform truck | |
| CN105625177A (en) | Steel truss suspending support construction method | |
| CN108098979A (en) | A kind of PK sections concrete box girder precast segment template |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141105 |