CN102225580A - Method for longitudinally moving box girder internal mold - Google Patents
Method for longitudinally moving box girder internal mold Download PDFInfo
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- CN102225580A CN102225580A CN201110097867XA CN201110097867A CN102225580A CN 102225580 A CN102225580 A CN 102225580A CN 201110097867X A CN201110097867X A CN 201110097867XA CN 201110097867 A CN201110097867 A CN 201110097867A CN 102225580 A CN102225580 A CN 102225580A
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- box girder
- internal mold
- girder
- rail wheel
- inner formwork
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Abstract
The invention relates to the field of pouring and forming of a bridge girder and a box girder, in particular to a method for longitudinally moving a box girder internal mold. The method is characterized by comprising the following steps of: hoisting an integral reinforcement cage of the box girder to a box girder prefabricated bed, and regulating and checking the reinforcement cage; sequentially installing a reverse rail wheel and a supporting frame of the reverse rail wheel on the box girder prefabricated bed in longitudinal direction, installing reverse rail wheels and supporting frames of the reverse rail wheels towards two ends of the box girder prefabricated bed, so as to form a box girder internal mold storage region outside the box girder prefabricated bed; and drawing the box girder internal mold in a contraction state by using a winch, dragging the whole box girder internal mold to the box girder prefabricated bed from the storage region along the reverse rail wheel or to the storage region from the box girder prefabricated bed, thus realizing the longitudinal moving of the box girder internal mold. By the adoption of the method, the whole internal mold can be drawn out from the one end of the girder once without manual removing of a mold plate and bolts, and can stretch and contract by virtue of a hydraulic oil cylinder. A spiral supporting rod can be suspended on a main girder, and the girder does not need to be carried out manually; and the main girder of the internal mold can be utilized as the longitudinally moving track and additional steel rails do not need to be paved.
Description
Technical field
The present invention relates to bridge box and beam and build the moulding class, particularly a kind of box girder inner formwork vertical shift method.
Background technology
In bridge on highway was built, the application of prestressing force prefabricated case beam was more and more general.And its prefabricated box girder inner formwork adopts gang form more.It is maximum a kind of template form of using in the engineering construction.It is made up of plate, angle mould, support and the connector of the some types with certain modulus, can risk multiple size and geometry with it.Can directly assemble at the scene during construction, can also be assembled into the bulk template in advance or component template is installed with crane for hoisting.The plate of gang form has all steel material to make, also useful steel framework and compound the making of wood (bamboo) plywood panel.Gang form not only is used for architectural engineering, science of bridge building, and underground engineering is extensive use also.But manually enter relatively difficulty of the indoor form removal of case for the low clearance combined inner mold, consuming time taking a lot of work not only makes construction cost increase, and influences construction speed; In addition, when removing, model is knocked, box girder inner formwork is deformed, the beam physique amount of construction after the influence.
Except that above-mentioned common methods, a kind of shifting formwork method of internal mold is disclosed in " full-automatic hydraulic prefabricated box girder inner formwork system " application (patent) number CN200610201284.6.Way is: inner formword is by backform and a pair ofly go up the inner corner trim mould and a pair of down the inner corner trim mould is hinged forms, going up oblique oil cylinder is connected between backform and the last inner corner trim mould, oblique oil cylinder is connected between inner corner trim mould and the following inner corner trim mould down, be interval with bracing frame in the cavity bottom central authorities that inner formword is enclosed along case beam depth, set up rail on the bracing frame, walking translation dolly on the rail, the translation dolly comprises travelling wheel, vehicle frame and is fixed on seat beam on the vehicle frame, the vehicle frame of translation dolly extends to outside the inner formword, lays hydraulic power unit and operating desk on it.The present invention is simple in structure, and steel using amount is few, and is with low cost, uses simple to operate, translation dolly whole walk, made things convenient for the integral body discrepancy of internal mold.
Though the disclosed technical scheme of above patent has certain advantage, rail and translation dolly need be set cooperate moving of internal mold, increased a large amount of equipment auxiliary constructions, in bridge construction, promote inconvenience; Adopt rail on the other hand, can't freely extend according to demand in the practice of construction, limitation is stronger.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of box girder inner formwork vertical shift method is provided, this method utilizes internal mold self girder as the vertical shift track, and in beam making bench and two ends stretch out anti-rail wheel and bracing frame thereof be set, this anti-rail wheel is equipped with internal mold main girder, can realize the vertical shift of internal mold in the case beam by equipment such as hoist engines.
The object of the invention realizes being finished by following technical scheme:
A kind of box girder inner formwork vertical shift method is characterized in that comprising the steps: to lift the box girder integral steel reinforcement cage to beam making bench, adjusts and checked steel reinforcement cage; Anti-rail wheel and bracing frame thereof longitudinally are installed on the beam prefabricated pedestal of case successively, and are stretched out to lay through the beam making bench two ends and install, outside beam making bench, to constitute the box girder inner formwork storage area; Adopt the hoist engine traction to be in the box girder inner formwork of contraction state, described box girder inner formwork is dragged to beam making bench or dilatory to storage area by beam making bench along anti-rail wheel is whole by storage area, realize the vertical shift of box girder inner formwork.
Described box girder inner formwork girder downside is provided with the track that cooperates with described anti-rail wheel with the contact-making surface of described anti-rail wheel.
The described precast pedestal quantity that is provided with anti-rail wheel and bracing frame thereof in it is a plurality of, and vertically arranges and anti-rail wheel and bracing frame transition connection thereof by described storage area.
Advantage of the present invention is:
1, internal mold one piece end in the beam body is extracted out, need not artificial form removal and bolt, and internal mold all adopts hydraulic jack to carry out convergent-divergent.The spiral strut can be suspended from the girder, need not a dead lift and goes out the beam body.
2, utilize internal mold self girder to need not to re-lay in addition rail as the vertical shift track;
3, internal mold main girder has higher strength and stiffness, but a whole set of internal mold both integral hoisting go into mould, also can slip into voluntarily and stretch out the oil cylinder formwork erection in the steel reinforcement cage again, the lifting internal mold need not suspension bracket and other special suspender, lifts very convenient;
4, internal mold can effectively prevent template come-up in the casting process from great;
5, the bracing frame of internal mold has designed the traveling undercarriage, singlely can easily bracing frame be hauled out the beam intracoelomic cavity.
Description of drawings
Accompanying drawing 1 is inner membrance overall structure schematic diagram of the present invention;
Accompanying drawing 2 is sections softened state schematic diagram in the internal mold of the present invention;
Accompanying drawing 3 is sections contraction state schematic diagram in the internal mold of the present invention;
Accompanying drawing 4 is inner membrance vertical shift process schematic diagram of the present invention.
The specific embodiment
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technical staff's of the same trade understanding:
Shown in Fig. 1-4, label 1-7 represents respectively: beam making bench 1, internal mold 2, anti-rail wheel 3, bracing frame 4, storage area 5, track 6, crossbeam 7.
Referring to Fig. 2, related structure mainly contains internal mold carriage and inner membrance 2 in the present embodiment:
The internal mold carriage is made up of anti-rail wheel 3, crossbeam 7 and bracing frame 4 three parts.When internal mold carriage (totally 8) is installed its integral body lifted in the base plate reinforcing bar preformed hole and (utilize in the case beam bottom board spilled water hole), bracing frame 4 lower end screw rods need preformed hole on the corresponding bed die simultaneously, fuse with bed die by the nut connection, keep its resistance to overturning.Corresponding, internal mold 2 girder downsides are provided with the track 6 that cooperates with described anti-rail wheel with the contact-making surface of described anti-rail wheel 3.Adopt this kind structure, utilize internal mold 2 self girder to need not to re-lay in addition rail as the vertical shift track, and behind two uniform some internal mold carriages in beam making bench 1 middle part, internal mold 2 is moved on another beam making bench 1 by a beam making bench 1, remove the internal mold carriage that does not re-use afterwards, be routed to hypomere zone to be transported.When having avoided adopting on rail mobile inner membrance 2 schemes, inner membrance 2 is subject to rail length and can't moves continuously, can only take to suspend in midair the means that move and slide and combine.
In conjunction with the said apparatus structure, below be described in detail for method in the present embodiment:
1, steel reinforcement cage is adjusted and checked to lifting box girder integral steel reinforcement cage to beam making bench 1;
2, the anti-rail in mounting end and middle part wheel 3 and bracing frame 4 relevant position to the case beam beam making bench 1;
3, adopt 5t hoist engine traction internal mold 2, internal mold 2 integral body on the anti-rail wheel 3 that leaves in the storage area 5 are dragged to beam making bench 1 relevant position;
4, by a top effect of hydraulic jack, internal mold 2 opens sequentially gradually to be propped up;
5, treat that internal mold 2 all opens, the people enters internal mold 2, adopts spiral strut and bearing pin that internal mold 2 is carried out bracing reinforcement, will hold mould to be in place again;
6, the people enters box house internal mold 2 reinforcing struts is taken off during the demoulding, handles the hydraulic control system that is positioned over internal mold 2 outer ends, shrinks hydraulic jack in order;
7, harvest after, internal mold 2 is whole to descend, the track 6 of internal mold 2 girder lower ends is fallen on the anti-rail wheel 3 on the bracing frame 4;
8, with the 5t hoist engine that internal mold 2 is whole dilatory to the beam body, fall on the anti-rail wheel 3 of storage area 5;
Whole knockout course only needs 4 workmans, just can all finish in 2 hours.
Should note following problem in the above-mentioned steps:
1, before each working cycles, check whether each limit switch reliable, whether haulage cable, pulley and hydraulic system pressure, liquid level normal, pulley, travelling wheel bearing block, lubricated whether good, confirm normal, can operation;
2, reply concrete each several part size is carried out check measurement before the cast, guarantees can carry out the concrete cast after relative dimensions and flatness reach requirement;
When 3, traction traveling dolly template moved, observing moving direction at any time had accessiblely, prevents that chassis from jumping the road and pulling other plants;
4, the concrete setting time unsuitable oversize, intensity reaches 60 of concrete design strength ~ 70% o'clock need carry out the demoulding, otherwise can cause demoulding difficulty;
5, if vertical shift traveling rail also can adopt the back-to-back welding of I-steel or channel-section steel all can in short supply.
Claims (3)
1. a box girder inner formwork vertical shift method is characterized in that comprising the steps: to lift the box girder integral steel reinforcement cage to beam making bench, adjusts and checked steel reinforcement cage; Anti-rail wheel and bracing frame thereof longitudinally are installed on the beam prefabricated pedestal of case successively, and are stretched out to lay through the beam making bench two ends and install, outside beam making bench, to constitute the box girder inner formwork storage area; Adopt the hoist engine traction to be in the box girder inner formwork of contraction state, described box girder inner formwork is dragged to beam making bench or dilatory to storage area by beam making bench along anti-rail wheel is whole by storage area, realize the vertical shift of box girder inner formwork.
2. a kind of box girder inner formwork vertical shift release method according to claim 1 is characterized in that: described box girder inner formwork girder downside is provided with the track that cooperates with described anti-rail wheel with the contact-making surface of described anti-rail wheel.
3. a kind of box girder inner formwork vertical shift release method according to claim 1, it is characterized in that: the described precast pedestal quantity that is provided with anti-rail wheel and bracing frame thereof in it is a plurality of, and vertically arranges and anti-rail wheel and bracing frame transition connection thereof by described storage area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110097867 CN102225580B (en) | 2011-04-19 | 2011-04-19 | Method for longitudinally moving box girder internal mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110097867 CN102225580B (en) | 2011-04-19 | 2011-04-19 | Method for longitudinally moving box girder internal mold |
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| Publication Number | Publication Date |
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| CN102225580A true CN102225580A (en) | 2011-10-26 |
| CN102225580B CN102225580B (en) | 2013-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110097867 Active CN102225580B (en) | 2011-04-19 | 2011-04-19 | Method for longitudinally moving box girder internal mold |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160542A (en) * | 2017-06-09 | 2017-09-15 | 中铁建大桥工程局集团第五工程有限公司 | Bracket type inner form support system construction method |
| CN107363988A (en) * | 2017-09-07 | 2017-11-21 | 中交二公局第四工程有限公司 | The hydraulic internal mold rack rails running gear and traveling method of prefabricated case beam |
| CN109203219A (en) * | 2018-11-22 | 2019-01-15 | 湖南中铁五新钢模有限责任公司 | A kind of automatic longitudinal-moving device of box girder inner formwork |
| CN112757474A (en) * | 2020-12-30 | 2021-05-07 | 湖南中铁五新钢模有限责任公司 | Method for prefabricating hollow pier stud by integrally overturning inner mold, outer mold and reinforcement cage |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200991949Y (en) * | 2007-04-09 | 2007-12-19 | 中铁大桥(郑州)工程机械有限公司 | Box-beam internal mould |
-
2011
- 2011-04-19 CN CN 201110097867 patent/CN102225580B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200991949Y (en) * | 2007-04-09 | 2007-12-19 | 中铁大桥(郑州)工程机械有限公司 | Box-beam internal mould |
Non-Patent Citations (1)
| Title |
|---|
| 邓寿军: "后张法预应力混凝土箱梁全自动整体内模设计与施工", 《施工技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160542A (en) * | 2017-06-09 | 2017-09-15 | 中铁建大桥工程局集团第五工程有限公司 | Bracket type inner form support system construction method |
| CN107363988A (en) * | 2017-09-07 | 2017-11-21 | 中交二公局第四工程有限公司 | The hydraulic internal mold rack rails running gear and traveling method of prefabricated case beam |
| CN109203219A (en) * | 2018-11-22 | 2019-01-15 | 湖南中铁五新钢模有限责任公司 | A kind of automatic longitudinal-moving device of box girder inner formwork |
| CN109203219B (en) * | 2018-11-22 | 2023-09-29 | 湖南五新智能科技股份有限公司 | Automatic longitudinal moving device for box girder internal mold |
| CN112757474A (en) * | 2020-12-30 | 2021-05-07 | 湖南中铁五新钢模有限责任公司 | Method for prefabricating hollow pier stud by integrally overturning inner mold, outer mold and reinforcement cage |
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| Publication number | Publication date |
|---|---|
| CN102225580B (en) | 2013-06-12 |
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