CN102587290A - Movable formwork for construction of large-span continuous beam and construction method - Google Patents
Movable formwork for construction of large-span continuous beam and construction method Download PDFInfo
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- CN102587290A CN102587290A CN2012100497585A CN201210049758A CN102587290A CN 102587290 A CN102587290 A CN 102587290A CN 2012100497585 A CN2012100497585 A CN 2012100497585A CN 201210049758 A CN201210049758 A CN 201210049758A CN 102587290 A CN102587290 A CN 102587290A
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Abstract
The invention discloses a movable formwork for construction of a large-span continuous beam and a construction method. The movable formwork comprises a bottom horizontal support system, a left main beam system, a right main beam system, crossbeam systems and outer mold systems. The left main beam system and the right main beam system are symmetrically mounted on the bottom horizontal support system and can synchronously move front and back on the bottom horizontal support system, the crossbeam systems are mounted on the main beam systems, and the outer mold systems are mounted on the crossbeam systems. The construction method includes a first step: beam manufacture; a second step: mold releasing; a third step: mold opening and traverse moving of the outer mold systems; a fourth step: longitudinal moving of a formwork; and a fifth step: repeating of the first step, the second step the third step and the fourth step by multiple times to sequentially complete follow-up construction of various hole beams. In the fourth step, the outer mold systems move to a pouring construction position of a next hole beam to realize mold closing. The movable formwork and the construction method have the advantages of reasonable design, fast construction speed, low construction cost, simplicity and convenience in utilization and operation, fine service effect, safety, reliability, and capability of effectively solving problems of complexity in construction process, high construction cost, slow construction progress, narrow application range and the like of an existing construction method for a large-span continuous beam.
Description
Technical field
The invention belongs to the large-span continuous beam technical field of construction, especially relate to a kind of large-span continuous beam construction with mobile formwork and job practices.
Background technology
At present, when large-span continuous beam is constructed, adopt Hanging Basket cantilever construction technology, but when adopting the Hanging Basket cantilever method to carry out practice of construction, its working procedure is many more, complex process, construction cost is high, and construction speed is slow, and construction period is difficult to guarantee.Simultaneously, nowadays existing also have a kind of job practices that adopts the cast-in-place support method that large-span continuous beam is constructed, but during practice of construction, rheobasic over the ground requirements of cast-in-place support method is high, and in the suitable water, the zanjon location constructs.Thereby all there are multiple practical problems such as construction technology is complicated, construction cost is high, construction speed is slow, applicable surface is narrow to some extent in above-mentioned existing Large-Span Continuous beam construction method.
Summary of the invention
Technical problem to be solved by this invention is to above-mentioned deficiency of the prior art, provides a kind of reasonable in design, speed of application is fast, construction cost is lower and it is easy and simple to handle to use, result of use is good large-span continuous beam construction to use mobile formwork.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: mobile formwork is used in a kind of large-span continuous beam construction, it is characterized in that: comprise the bottom level support system, about two symmetries be installed on the said bottom level support system and can be in girder system that said bottom level support system moves forward and backward synchronously, be installed in the transverse beam system in the said girder system and be installed in the outer modular system on the said transverse beam system; The large-span continuous beam of constructing is a multi-hole beam, and each Kong Liang is the prestressed concrete box girder of support fixation between the two adjacent groups bridge pier of front and back, and said bridge pier is laid on the horizontal cushion cap;
Said outer modular system comprises the forming panel that the current whole Kong Liang that constructs is carried out moulding by casting; The structure of the inner forming cavity of said forming panel and size all with the current structure of putting in order Kong Liang and measure-alike of constructing, and the installation position of said forming panel is consistent with the current installation position of putting in order Kong Liang of constructing; Said forming panel by about the gang forms laid of two symmetries assemble; Two said gang forms are respectively left side gang form and the right side gang form that is positioned at gang form right side, said left side, and the structure of said left side gang form and right side gang form is all identical with size;
Said bottom level support system comprises the bottom support unit that three structures and size are all identical; Three said bottom support unit are laid in respectively on three groups of bridge piers; The structure of three groups of said bridge piers and three all identical with size is respectively bridge pier one, bridge pier two and the bridge pier of laying continuously from front to back three, and current the construction put in order hole beam support fixation between said bridge pier two and said bridge pier three; Said bottom support unit comprises the horizontal shore that is fixed on the horizontal cushion cap; The left and right sides on the said horizontal shore is laid with respectively and promotes the vertical push unit of girder that two said girder systems move forward and backward, and the quantity of the vertical push unit of said girder is that two and the two are symmetry and lay;
Two said girder systems are respectively left side girder system and the right side girder system that is positioned at said left side girder system right side; And said left side girder system and said right side girder system include and are level to the girder of laying; Guide beam and back guide beam before the front and back end portion of said girder is equipped with respectively; Guide beam and back guide beam are all and girder is laid on the same horizon and the three is assemblied to form the vertical equity beam that a longitudinal length is not less than spacing between said bridge pier one and the bridge pier three before said, and said vertical equity beam is laid on the vertical push unit of said girder;
Said transverse beam system by about the crossbeam unit laid of two symmetries assemble; Two said crossbeam unit are respectively crossbeam unit, left side and the crossbeam unit, right side that is laid in right side, crossbeam unit, said left side; Crossbeam unit, said left side comprises the left side crossbeam that is installed in the girder system of said left side and can in the girder system of said left side, carries out move left and right and is installed on the crossbeam of left side and drives the horizontal push unit one that the left side crossbeam carries out move left and right; Crossbeam unit, said right side comprises the right side crossbeam that is installed in the girder system of said right side and can in the girder system of said right side, carries out move left and right and is installed on the crossbeam of right side and drives the horizontal push unit two that the right side crossbeam carries out move left and right that said left side crossbeam and right side crossbeam are laid on the same horizon and between the two and connect through removable connector; Said left side girder system is provided with and drives the vertical ejection device one that the left side crossbeam moves up and down, and said right side girder system is provided with the action synchronously of said vertical ejection device one and drives the vertical ejection device two that the right side crossbeam moves up and down; Said left side gang form is installed on the crossbeam of left side and can carries out move left and right synchronously with the left side crossbeam, and said right side gang form is installed on the crossbeam of right side and can carries out move left and right synchronously with the right side crossbeam.
Mobile formwork is used in above-mentioned a kind of large-span continuous beam construction, it is characterized in that: also comprise two C ellbeams, and two C ellbeams are respectively preceding C ellbeam and back C ellbeam; The C ellbeam is erected between the preceding guide beam rearward end in preceding guide beam rearward end and the said right side girder system in the girder system of said left side before said, and said C ellbeam afterwards is erected between the back guide beam leading section and the back guide beam leading section in the girder system of said right side in the girder system of said left side.
Mobile formwork is used in above-mentioned a kind of large-span continuous beam construction, it is characterized in that: also comprise the control system; The vertical push unit of said girder, laterally push unit one, laterally push unit two, vertically prop up ejection device one and vertically prop up ejection device two and control by said control system.
Mobile formwork use in above-mentioned a kind of large-span continuous beam construction, it is characterized in that: the vertical push unit of said girder, laterally push unit one, horizontal push unit two, vertically prop up ejection device one and vertically prop up ejection device two and be fluid power system.
Mobile formwork use in above-mentioned a kind of large-span continuous beam construction, it is characterized in that: also be provided with the vertical height guiding mechanism that the vertical height of girder is adjusted bottom the said girder, said vertical height guiding mechanism is controlled by said control system; And the left and right sides of said horizontal shore is laid with respectively and promotes the horizontal push unit of girder that two said girder systems carry out move left and right, and the horizontal push unit of said girder is controlled by said control system.
Mobile formwork is used in above-mentioned a kind of large-span continuous beam construction, and it is characterized in that: the right part of said left side crossbeam or the left part of right side crossbeam are provided with the dismounting platform that said removable connector is carried out dismounting.
Mobile formwork is used in above-mentioned a kind of large-span continuous beam construction, it is characterized in that: the side form support frame that said left side gang form and right side gang form include soffit formwork, are installed in the side template on the soffit formwork and side template is supported; Soffit formwork level in the gang form of said left side is installed on the crossbeam of left side, and the side form support frame in the gang form of said left side is fixed on the crossbeam of left side through supporting component one; Soffit formwork level in the gang form of said right side is installed on the crossbeam of right side, and the side form support frame in the gang form of said right side is fixed on the crossbeam of right side through supporting component two.
Mobile formwork is used in above-mentioned a kind of large-span continuous beam construction; It is characterized in that: said horizontal shore comprises the horizontal support crossbeam that is positioned at directly over the horizontal cushion cap, and the corresponding support bracket that the horizontal support crossbeam is carried out support fixation that is provided with in top, the horizontal cushion cap left and right sides; Said left side girder system is provided with the transverse slipway one that supplies left side crossbeam move left and right, and said right side girder system is provided with the transverse slipway two that supplies right side crossbeam move left and right; Current upper front end of constructing whole Kong Liang is provided with rear cross beam.
Simultaneously; The invention also discloses a kind of method step simple, realize convenient, efficiency of construction is high and be convenient to stride that the ditch construction is striden in the river, the Construction Through Form on Traveler method is used in large-span continuous beam construction applied widely; It is characterized in that: the large-span continuous beam of constructing is a multi-hole beam; And each Kong Liang is the prestressed concrete box girder of support fixation between the two adjacent groups bridge pier of front and back, and said bridge pier is laid on the horizontal cushion cap; And during practice of construction, from front to back the multi-hole beam in the construction large-span continuous beam is constructed respectively according to the installation position sequencing; In the large-span continuous beam of constructing the job practices of each Kong Liang all identical, and for arbitrary Kong Liang, its job practices may further comprise the steps:
In this step; In the pouring concrete construction process; Said vertical ejection device one all is in a upwards top state with said vertical ejection device two, and said forming panel is in the matched moulds state, connects as one through removable connector between said left side crossbeam and the right side crossbeam; The current whole Kong Liang that constructs is carried out before the pouring concrete construction, and the installation position that should guarantee said forming panel is consistent with the current installation position of putting in order Kong Liang of constructing;
Step 3, outer modular system die sinking are traversing: at first, remove the said removable connector between left side crossbeam and the right side crossbeam; Afterwards; Through controlling said horizontal push unit one and said horizontal push unit two; Driving left side crossbeam and right side crossbeam laterally moves respectively laterally; Till the spacing between left side crossbeam and the right side crossbeam is enough to through one group of said bridge pier, then accomplish the traversing process of die sinking of said forming panel;
And in the horizontal laterally respectively moving process of left side crossbeam and right side crossbeam, the said left side gang form and the said right side gang form that drive in the said forming panel laterally move respectively synchronously laterally;
In this step; After accomplishing the traversing process of die sinking of said forming panel; Need judge that also whether the current whole Kong Liang that constructs is last Kong Liang of institute's construction large-span continuous beam: when judgement draw current construction put in order Kong Liang by during last hole beam of construction large-span continuous beam, whole work progresss of the completion large-span continuous beam of constructing then; Otherwise, get into step 4;
Said bridge pier one and said bridge pier two adjacent and its be positioned at said bridge pier two front sides; Carry out in the step 4 in the mould bases vertical shift process, be laid with said bottom support unit on said bridge pier one, bridge pier two and the bridge pier three;
In this step; After said forming panel moved to the casting and constructing position with current next the adjacent Kong Liang of whole hole beam that constructs; Through controlling said horizontal push unit one and said horizontal push unit two; Drive left side crossbeam and right side crossbeam and laterally move to the inside respectively, till said left side gang form in left side crossbeam and right side crossbeam and said forming panel and said right side gang form all close up; Afterwards, through said removable connector left side crossbeam and right side crossbeam are assembled into one;
Said method; It is characterized in that: the upper front end of the prestressed concrete box girder of casting complete is provided with rear cross beam in the step 1; And after in the step 4 said forming panel being moved to the casting and constructing position with current next the adjacent Kong Liang of whole hole beam that constructs, also need rear cross beam and said forming panel to be fastenedly connected and be one through lifting part.
The present invention compared with prior art has the following advantages:
1, the mobile formwork reasonable in design that is adopted, speed of application are soon, construction cost is lower and it is easy and simple to handle to use, result of use is good.
2, mobile formwork is a lower support type, and two groups of steel case beams with crossbeam folding, mould bases vertical shift, function such as traversing, are realized cast-in-place to concrete in-situ through template through the beam supporting template about utilization.
3, the construction method step that is adopted is simple, realization is convenient, efficiency of construction is high and be convenient to stride the river strides ditch construction, applied widely.
4, be convenient to stride the river and stride the ditch construction, and safe and reliable, can effectively reduce waterborne, work high above the ground, eliminate potential safety hazard waterborne, that the high-altitude exists in constructing.
5, speed of application is fast, and efficient is high.Need not artificial mounting bracket, template, all hydraulic pressure are controlled automatically, have shortened construction period.
6, practical value is high, can stride the construction of ditch cross a river, and stand, tear open and mobile formwork all adopts hydraulic system, convenient and quick construction, the large-span continuous beam of its largest span 60m that can construct, and the longest beam section 72m that once can construct only need 20 day time.
In sum; The present invention is reasonable in design, speed of application is fast, construction cost is lower and it is easy and simple to handle to use, result of use good, safe and reliable, can effectively solve multiple practical problems such as the construction technology that existing Large-Span Continuous beam construction method exists is complicated, construction cost is high, construction speed is slow, applicable surface is narrow.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 by the present invention the structural representation of employing mobile formwork when being in the matched moulds casting condition.
Fig. 2 by the present invention the structural representation of employing mobile formwork when being in the traversing state of die sinking.
Fig. 3 by the present invention the structural representation of employing mobile formwork when being in the vertical shift state.
User mode reference diagram when Fig. 4 makes beam for adopting the present invention to prestressed concrete box girder one.
User mode reference diagram when Fig. 5 makes beam for adopting the present invention to prestressed concrete box girder two.
User mode reference diagram when Fig. 6 makes beam for adopting the present invention to prestressed concrete box girder three.
Fig. 7 by adopt the present invention to the method flow block diagram of construction large-span continuous beam when constructing.
Description of reference numerals:
The 1-bridge pier; The 2-girder; 3-1-left side crossbeam;
3-2-right side crossbeam; Guide beam before the 4-; Guide beam behind the 5-;
6-dismounting platform; The 7-connecting pin; The 8-soffit formwork;
The 9-side template; 11-transverse slipway one;
12-horizontal support crossbeam; 13-supports bracket; C ellbeam before the 14-;
C ellbeam behind the 15-; The 16-rear cross beam;
17-prestressed concrete box girder one; 18-side form support frame;
The 19-supporting rod; 20-advances flatcar;
The 21-girder vertically moves hydraulic jack; 22-hydraulic oil pump one;
The 24-girder laterally moves hydraulic jack;
The 25-girder vertically moves hydraulic jack; The vertical jackscrew one of 26-;
The 27-crossbeam laterally moves hydraulic jack one;
The 28-crossbeam laterally moves hydraulic jack two; The 29-1# bridge pier;
The 30-2# bridge pier; The 31-3# bridge pier;
32-prestressed concrete box girder two;
33-prestressed concrete box girder three;
The 34-4# bridge pier; The horizontal cushion cap of 35-.
The specific embodiment
Like Fig. 1, Fig. 2 and shown in Figure 3, the construction of large-span continuous beam that the present invention adopted with mobile formwork comprise the bottom level support system, about two symmetries be installed on the said bottom level support system and can be in girder system that said bottom level support system moves forward and backward synchronously, be installed in the transverse beam system in the said girder system and be installed in the outer modular system on the said transverse beam system.The large-span continuous beam of constructing is a multi-hole beam, and each Kong Liang is the prestressed concrete box girder of support fixation between front and back two adjacent groups bridge pier 1, and said bridge pier 1 is laid on the horizontal cushion cap 35.
Said outer modular system comprises the forming panel that the current whole Kong Liang that constructs is carried out moulding by casting; The structure of the inner forming cavity of said forming panel and size all with the current structure of putting in order Kong Liang and measure-alike of constructing, and the installation position of said forming panel is consistent with the current installation position of putting in order Kong Liang of constructing.Said forming panel by about the gang forms laid of two symmetries assemble; Two said gang forms are respectively left side gang form and the right side gang form that is positioned at gang form right side, said left side, and the structure of said left side gang form and right side gang form is all identical with size.In the present embodiment, be assembled into one through template connecting piece between said left side gang form and the right side gang form.
In the present embodiment, the large-span continuous beam of constructing is a steel structure continuous beam, and each Kong Liang is the cast-in-situ continuous beam that is cast for one with bridge pier 1, and the current whole Kong Liang (being a current hole beam of constructing) that constructs is a prestressed concrete box girder 1.
During practice of construction; Difference between the structure of said forming panel and the conventional forming panel when prestressed concrete box girder poured into a mould only is: said forming panel is divided into said left side gang form and right side gang form two parts, and the assembly type template of this forming panel for being assembled by said left side gang form and right side gang form.
In the present embodiment, the side form support frame 18 that said left side gang form and right side gang form include soffit formwork 8, are installed in the side template 9 on the soffit formwork 8 and side template 9 is supported.During actual installation, said soffit formwork 8 is assembled into one with side template 9, and said left side gang form and the right side gang form make-up formula forming panel that forms a whole.All side portion structure and the size with the current whole Kong Liang that constructs is all identical with size for the structure of said side template 9.
Said bottom level support system comprises the bottom support unit that three structures and size are all identical; Three said bottom support unit are laid in respectively on three groups of bridge piers 1; The structure of three groups of said bridge piers 1 and three all identical with size is respectively bridge pier one, bridge pier two and the bridge pier of laying continuously from front to back three, and current the construction put in order hole beam support fixation between said bridge pier two and said bridge pier three.Said bottom support unit comprises the horizontal shore that is fixed on the horizontal cushion cap 35; The left and right sides on the said horizontal shore is laid with respectively and promotes the vertical push unit of girder that two said girder systems move forward and backward, and the quantity of the vertical push unit of said girder is that two and the two are symmetry and lay.
Two said girder systems are respectively left side girder system and the right side girder system that is positioned at said left side girder system right side; Said left side girder system is all identical with size with the structure of said right side girder system; And said left side girder system and said right side girder system include and are level to the girder of laying 2; Guide beam 4 and back guide beam 5 before the front and back end portion of said girder 2 is equipped with respectively; Guide beam 4 and back guide beam 5 are all and girder 2 is laid on the same horizon and the three is assemblied to form the vertical equity beam that a longitudinal length is not less than spacing between said bridge pier one and the bridge pier three before said, and said vertical equity beam is laid on the vertical push unit of said girder.
In the present embodiment, the longitudinal length of said girder 2 is identical with the longitudinal length of said forming panel, and the front and back end portion of girder 2 respectively with end, the front and back flush of said forming panel.
During actual processing and fabricating, said before guide beam 4 and back guide beam 5 all for being connected the horizontal truss that rod member is assemblied to form by a plurality of.
Said transverse beam system by about the crossbeam unit laid of two symmetries assemble; Two said crossbeam unit are respectively crossbeam unit, left side and the crossbeam unit, right side that is laid in right side, crossbeam unit, said left side, and the structure of crossbeam unit, said left side and crossbeam unit, right side is all identical with size.
Crossbeam unit, said left side comprises the left side crossbeam 3-1 that is installed in the girder system of said left side and can in the girder system of said left side, carries out move left and right and is installed on the crossbeam 3-1 of left side and drives the horizontal push unit one that left side crossbeam 3-1 carries out move left and right; Crossbeam unit, said right side comprises the right side crossbeam 3-2 that is installed in the girder system of said right side and can in the girder system of said right side, carries out move left and right and is installed on the crossbeam 3-2 of right side and drives the horizontal push unit two that right side crossbeam 3-2 carries out move left and right that said left side crossbeam 3-1 and right side crossbeam 3-2 are laid on the same horizon and between the two and connect through removable connector.
Said left side girder system is provided with and drives the vertical ejection device one that left side crossbeam 3-1 moves up and down, and said right side girder system is provided with the action synchronously of said vertical ejection device one and drives the vertical ejection device two that right side crossbeam 3-2 moves up and down.Said left side gang form is installed on the crossbeam 3-1 of left side and can carries out move left and right synchronously with left side crossbeam 3-1, and said right side gang form is installed on the crossbeam 3-2 of right side and can carries out move left and right synchronously with right side crossbeam 3-2.
In the present embodiment, said horizontal shore comprises the horizontal support crossbeam 12 that is positioned at directly over the horizontal cushion cap 35, and the corresponding support bracket 13 that horizontal support crossbeam 12 is carried out support fixation that is provided with in top, horizontal cushion cap 35 left and right sides.During actual installation, the quantity of said support bracket 13 is two, and two said support bracket 13 symmetries are laid in above the left and right sides of horizontal cushion cap 35.
Said left side girder system is provided with the transverse slipway 1 that supplies left side crossbeam 3-1 move left and right, and said right side girder system is provided with the transverse slipway two that supplies right side crossbeam 3-2 move left and right; Current upper front end of constructing whole Kong Liang is provided with rear cross beam 16.
Simultaneously, the large-span continuous beam construction that the present invention adopted also comprises the control system with mobile formwork.The vertical push unit of said girder, laterally push unit one, laterally push unit two, vertically prop up ejection device one and vertically prop up ejection device two and control by said control system.In the present embodiment, said control system is an electrical control system.
In the present embodiment, the vertical push unit of said girder, laterally push unit one, laterally push unit two, vertically prop up ejection device one and vertically prop up ejection device two and be fluid power system.
In the present embodiment, the propelling flatcar 20 that the vertical push unit of said girder moves forward and backward for the said girder of promotion system, the girder that is installed on the propelling flatcar 20 vertically move hydraulic jack 21 and vertically move the hydraulic oil pump 1 that hydraulic jack 21 joins through conduit under fluid pressure one and girder.
In the present embodiment, said girder 2 bottoms also are provided with the vertical height guiding mechanism that the vertical height of girder 2 is adjusted, and said vertical height guiding mechanism is controlled by said control system; And the left and right sides of said horizontal shore is laid with respectively and promotes the horizontal push unit of girder that two said girder systems carry out move left and right, and the horizontal push unit of said girder is controlled by said control system.
During actual the use, the horizontal push unit of said girder also can adopt the driving mechanism of other type.In the present embodiment, the horizontal push unit of said girder comprises that being installed on the said horizontal shore and promoting the girder that girder 2 carries out laterally moving laterally moves hydraulic jack 24 and laterally move the hydraulic oil pump two that hydraulic jack 24 joins through conduit under fluid pressure two and girder.
Equally, said vertical height guiding mechanism also can adopt the driving mechanism of other type.In the present embodiment, said vertical height guiding mechanism comprises that girder vertically moves hydraulic jack 25 and vertically moves the hydraulic oil pump three that hydraulic jack 25 joins through conduit under fluid pressure three and girder.
The quantity of said vertical height guiding mechanism is two, and two said vertical height guiding mechanisms are installed in girder 2 bottoms of two said girder systems respectively.The quantity of horizontal push unit of said girder and the vertical push unit of said girder is two.
In the present embodiment, said vertical ejection device one is for being installed in the vertical jackscrew 1 at said left side girder system middle girder 2 tops, and the quantity of said vertical jackscrew 1 is two.During actual installation, the base of said vertical jackscrew 1 is installed in girder 2 tops in the girder system of said left side.Said left side crossbeam 3-1 Horizontal Branch withstands on two vertical jackscrew 1, and supplies the transverse slipway 1 of left side crossbeam 3-1 move left and right to be laid on the end face of two said vertical jackscrew 1.
In like manner, said vertical ejection device two is for being installed in the vertical jackscrew two at said right side girder system middle girder 2 tops, and the quantity of said vertical jackscrew two is two.During actual installation, the base of said vertical jackscrew two is installed in girder 2 tops in the girder system of said right side.Said right side crossbeam 3-2 Horizontal Branch withstands on two vertical jackscrew two, and supplies the transverse slipway two of right side crossbeam 3-2 move left and right to be laid on the end face of two said vertical jackscrew two.
In the present embodiment; Said horizontal push unit one laterally moves hydraulic jack 1 and laterally moves the hydraulic oil pump four that hydraulic jack 1 joins through conduit under fluid pressure four and crossbeam for being installed in crossbeam 3-1 bottom, left side and driving the crossbeam that carries out laterally moving in girder 2 tops of left side crossbeam 3-1 in the girder system of said left side, and girder 2 tops in the girder system of said left side are provided with and supply crossbeam laterally to move the footstock one that the top is propped up at hydraulic jack one 27 rear portions.
In like manner; Said horizontal push unit two laterally moves hydraulic jack 2 28 and laterally moves the hydraulic oil pump five that hydraulic jack 2 28 joins through conduit under fluid pressure five and crossbeam for being installed in the crossbeam 3-2 of right side bottom and driving the crossbeam that carries out laterally moving in girder 2 tops of right side crossbeam 3-2 in the girder system of said right side, girder 2 tops in the girder system of said right side be provided with supply that crossbeam moves laterally that hydraulic jack 2 28 rear portions prop up the top prop up footstock two.
In the present embodiment, be die sinking, matched moulds convenience, the left part of the right part of said left side crossbeam 3-1 or right side crossbeam 3-2 is provided with the dismounting platform 6 that said removable connector is carried out dismounting.
In the present embodiment, said removable connector is a connecting pin 7.
In addition, the large-span continuous beam construction that the present invention adopted also comprises two C ellbeams with mobile formwork, and two C ellbeams are respectively preceding C ellbeam 14 and back C ellbeam 15.
In the present embodiment, said preceding C ellbeam 14 is all identical with size with the structure of back C ellbeam 15.C ellbeam 14 is erected between preceding guide beam 4 rearward end in preceding guide beam 4 rearward end and the said right side girder system in the girder system of said left side before said, and said C ellbeam 15 afterwards is erected between back guide beam 5 leading sections and back guide beam 5 leading sections in the girder system of said right side in the girder system of said left side.
To sum up, the construction of large-span continuous beam that the present invention adopted with mobile formwork mainly comprise the bottom level support system, about two symmetries be installed in girder system on the said bottom level support system, be installed in transverse beam system in the said girder system, be installed in the outer modular system on the said transverse beam system, preceding C ellbeam 14 and back C ellbeam 15 and rear cross beam 16.
Wherein, Said bottom level support system comprises three bottom support unit; And the horizontal shore in the said bottom support unit adopts trabeation; Said horizontal shore is combined to the support bracket of laying 13 with being vertically by horizontal support crossbeam 12, is supported on the horizontal cushion cap 35 through supporting bracket 13.In the actual use, the main effect of said bottom level support system is to support said girder system, and the load that is applied in the said girder system is delivered on the horizontal cushion cap 35 through supporting bracket 13.Each supports all to be equipped with on the top sliding surface of bracket 13 and advances flatcar 20, and respectively advances flatcar 20 all to be furnished with a girder to vertically move hydraulic jack 21.Girder 2 in the said girder system is supported on and advances on the flatcar 20; The upper surface of said support bracket 13 studs with corrosion resistant plate and plastic slide respectively with the soffit that advances flatcar 20; Advance the upper surface of flatcar 20 to be equipped with the polytetrafluoroethylene (PTFE) slide plate, said bottom level support system makes girder 2 at direction across bridge, vertically correctly in place to reaching along bridge through the three-dimensional hydraulic system.
Left side crossbeam 3-1 in the said transverse beam system and right side crossbeam 3-2 adopt the welding box structure; And adopt connecting pin 7 to connect between left side crossbeam 3-1 and the right side crossbeam 3-2; The bottom of left side crossbeam 3-1 is supported through vertical jackscrew 1; And the bottom of right side crossbeam 3-2 is supported through said vertical jackscrew two, and left side crossbeam 3-1 and right side crossbeam 3-2 all are mounted with soffit formwork 8 and side form support frame 18.The base of said vertical jackscrew 1 and vertical jackscrew two is directly installed on above the top flange plate of girder 2; And the end face of vertical jackscrew 1 and vertical jackscrew two is respectively equipped with transverse slipway 1 and transverse slipway two; Left side crossbeam 3-1 and right side crossbeam 3-2 can carry out direction across bridge respectively and slide on transverse slipway 1 and transverse slipway two; In addition, left side crossbeam 3-1 and right side crossbeam 3-2 can also vertically adjust through vertical jackscrew 1 and vertical jackscrew two.
Said rear cross beam 16 is a steel case beam, and in the practice of construction process, rear cross beam 16 is laid in the prestressed concrete box girder front end of fluid concrete.Said rear cross beam 16 main effect have two: the firstth, when the second hole beam of each couplet and beam construction of follow-up each hole; Adopt the girder 2 of mobile formwork rear end to sling the present invention through suspension rod; Girder 2 is locked at pouring into a mould the prestressed concrete box girder that finishes; Make that pouring concrete and newly placed concrete are out of shape jointly, faulting of slab ends appears in, old concrete seam crossing new to prevent; The secondth, when mobile the present invention adopts the mobile formwork via hole, the balanced controls that generation is laterally toppled as the opposing mould bases.
C ellbeam 14 adopts semi-circular steel truss structure with back C ellbeam 15 before said; The two be connected to girder 2 front and back ends about two outsides; During actual the use, the main effect of preceding C ellbeam 14 and back C ellbeam 15 is to prevent after the mobile formwork die sinking that the present invention adopts laterally unstability.
Forming panel in the said outer modular system is poured into a mould the appearance and size of prestressed concrete box girder and is welded assembled by steel plate processing according to need; The soffit formwork 8 of left side gang form and right side gang form described in the said forming panel is laid immediately on left side crossbeam 3-1 and the right side crossbeam 3-2; And soffit formwork 8 block positions in said left side gang form and the right side gang form are consistent with the block position between left side crossbeam 3-1 and the right side crossbeam 3-2, connect through connecting bolt between the soffit formwork 8 in said left side gang form and the right side gang form.In addition; The frange plates that adopted in the said outer modular system etc. are the corresponding disconnection separated into two parts of position grouping between left side crossbeam 3-1 and right side crossbeam 3-2 also, and the side template 9 in said left side gang form and the right side gang form supports through side form support frame 18.Soffit formwork 8 in said left side gang form and the right side gang form, side template 9 and frange plate adopt steel plate to process, and whole through being welded to connect.
In the present embodiment, the horizontal push unit of said girder, the vertical push unit of said girder, said vertical height guiding mechanism, the vertical push unit of said girder, horizontal push unit one and horizontal push unit two all adopt fluid power system.During actual the use, every cover fluid power system is provided with Hydraulic Station, hydraulic cylinder, fluid pressure line and corresponding electrical control system respectively and forms.For said girder system; The girder that the girder that is equipped with the vertical jacking self locking hydraulic cylinder (being that girder vertically moves hydraulic jack 25) of a high-pressure and hydraulic station, two thrust 7600KN and stroke 350mm, two thrust 470KN and stroke 300mm laterally moves hydraulic jack 24 and thrust 640KN and stroke 1000mm vertically moves hydraulic jack 21, and above three-dimensional hydraulic system plays carries out vertical shift, traversing and vertical displacement effect to girder 2.
Said electrical control system by the present invention in the employing mobile formwork three-dimensional motion of corresponding assembly power, the power supply of said electrical control system are provided is 3 phase 380V, 50HZ AC power, allow voltage pulsation ± 10%.Complete equipment assembling power 73KW, maximum load 44KW.。
A kind of large-span continuous beam as shown in Figure 7 is used the Construction Through Form on Traveler method; The large-span continuous beam of constructing is a multi-hole beam; And each Kong Liang is the prestressed concrete box girder of support fixation between front and back two adjacent groups bridge pier 1, and said bridge pier 1 is laid on the horizontal cushion cap 35; And during practice of construction, from front to back the multi-hole beam in the construction large-span continuous beam is constructed respectively according to the installation position sequencing; In the large-span continuous beam of constructing the job practices of each Kong Liang all identical, and for arbitrary Kong Liang, its job practices may further comprise the steps:
In this step; In the pouring concrete construction process; Said vertical ejection device one all is in a upwards top state with said vertical ejection device two; And said forming panel is in the matched moulds state, connects as one through removable connector between said left side crossbeam 3-1 and the right side crossbeam 3-2, and its structure sees Fig. 1 for details; The current whole Kong Liang that constructs is carried out before the pouring concrete construction, and the installation position that should guarantee said forming panel is consistent with the current installation position of putting in order Kong Liang of constructing.
In the present embodiment, the current whole Kong Liang that constructs is a prestressed concrete box girder 1, and the pouring concrete construction process of prestressed concrete box girder 1 is seen for details Fig. 4.
In the practice of construction process, when carrying out matched moulds, through dismounting platform 6 and utilize said removable connector that said left side gang form in the said forming panel and right side gang form are assembled into one, practical operation is very easy.
In the present embodiment, prestressed concrete box girder one 17 support fixation are between said bridge pier two (being 2# bridge pier 30) and said bridge pier three (being 1# bridge pier 29).
Actual when making beam; The present invention supports said forming panel by two girder systems through left side crossbeam 3-1 and right side crossbeam 3-2; In said forming panel, carry out the cast-in-place concrete beam; Said forming panel is adjusted by micro-adjusting mechanism, meets design with the physical dimension that guarantees the moulding by casting prestressed concrete box girder.
Actual when carrying out the demoulding, shrink with said vertical ejection device two by said vertical ejection device one and to realize that side form, the bed die demoulding, the forming panel after the demoulding drop on left side crossbeam 3-1 and the right side crossbeam 3-2.
Step 3, outer modular system die sinking are traversing: at first, remove the said removable connector between left side crossbeam 3-1 and the right side crossbeam 3-2; Afterwards; Through controlling said horizontal push unit one and said horizontal push unit two; Driving left side crossbeam 3-1 and right side crossbeam 3-2 laterally moves respectively laterally; Spacing between left side crossbeam 3-1 and right side crossbeam 3-2 is enough to through one group then accomplish the traversing process of die sinking of said forming panel till the said bridge pier 1, and the traversing state of its die sinking sees Fig. 2 for details.
And in the horizontal laterally respectively moving process of left side crossbeam 3-1 and right side crossbeam 3-2, the said left side gang form and the said right side gang form that drive in the said forming panel laterally move respectively synchronously laterally.
In this step; After accomplishing the traversing process of die sinking of said forming panel; Need judge that also whether the current whole Kong Liang that constructs is last Kong Liang of institute's construction large-span continuous beam: when judgement draw current construction put in order Kong Liang by during last hole beam of construction large-span continuous beam, whole work progresss of the completion large-span continuous beam of constructing then; Otherwise, get into step 4.
Owing to connect through template connecting piece between said left side gang form and the said right side gang form; Actual when carrying out die sinking; Said removable connector on the left of unclamping earlier between crossbeam 3-1 and the right side crossbeam 3-2 and the template connecting piece between said left side gang form and the said right side gang form realize dividing mould; Afterwards, restart said horizontal push unit one and said horizontal push unit two, left side crossbeam 3-1 and right side crossbeam 3-2 are moved to the left and right sides of girder 1 respectively, realize that die sinking is traversing.
Said bridge pier one and said bridge pier two adjacent and its be positioned at said bridge pier two front sides; Carry out in the step 4 in the mould bases vertical shift process, be laid with said bottom support unit on said bridge pier one, bridge pier two and the bridge pier three.
In this step; After said forming panel moved to the casting and constructing position with current next the adjacent Kong Liang of whole hole beam that constructs; Through controlling said horizontal push unit one and said horizontal push unit two; Drive left side crossbeam 3-1 and right side crossbeam 3-2 and laterally move to the inside respectively, till said left side gang form in left side crossbeam 3-1 and right side crossbeam 3-2 and said forming panel and said right side gang form all close up; Afterwards, through said removable connector left side crossbeam 3-1 and right side crossbeam 3-2 are assembled into one;
In the present embodiment, said bridge pier one is for being positioned at the 3# bridge pier 31 of 2# bridge pier 30 front sides.
Carry out before the mould bases vertical shift in the step 4; Three said bottom support unit are laid in respectively on 1 # bridge pier 29,2# bridge pier 30 and the 3# bridge pier 31; Because preceding guide beam 4 and back guide beam 5 are all and girder 2 is laid on the same horizon and the three is assemblied to form the vertical equity beam that a longitudinal length is not less than spacing between said bridge pier one and the bridge pier three; Thereby said forming panel moved in the casting and constructing position process with current next the adjacent Kong Liang of whole hole beam that constructs; Two vertical push units of girder through being laid on the bottom support unit on the 3# bridge pier 31 lead to preceding guide beam 4; Effectively guarantee the stationarity of mould bases moving process, and realize that conveniently translational speed is fast.
Because current the construction put in order Kong Liang and carried out before the concrete pouring; Move forward through promoting said left side girder system and right side girder system synchronization; And said forming panel moved to before the casting and constructing position of the current whole Kong Liang that constructs, three said bottom support unit are laid in respectively on 0# bridge pier, 1# bridge pier 29 and the 2# bridge pier 30.Thereby, carrying out in the step 4 before the mould bases vertical shift, the bottom support unit that needs will originally be laid on the 0# bridge pier earlier moves on the 3# bridge pier 31.
In the present embodiment; The upper front end of the prestressed concrete box girder of casting complete is provided with rear cross beam 16 in the step 1; And after in the step 4 said forming panel being moved to the casting and constructing position with current next the adjacent Kong Liang of whole hole beam that constructs, also need rear cross beam 16 and said forming panel are fastenedly connected and be one through lifting part.
During actual the use, said lifting part is a suspension rod.In the present embodiment, specifically be to adopt the girder 2 of mobile formwork rear end to be fastenedly connected with the present invention rear cross beam 16 through suspension rod to be one, be one thereby make rear cross beam 16 and said forming panel be fastenedly connected.
Accomplish in the step 3 die sinking traversing after; Start the vertical push unit of girder; Next of two said girder system synchronization vertical shift to the place ahead separately striden bridge location; And close up mould bases in the new bridge cross-location, butt joint lateral ties (i.e. said removable connector between left side crossbeam 3-1 and the right side crossbeam 3-2 and the template connecting piece between said left side gang form and the said right side gang form) begin to prepare the next beam construction process of making.
In the present embodiment, only the work progress to next Kong Liang of next Kong Liang of prestressed concrete box girder 1 (promptly being positioned at prestressed concrete box girder one 17 front sides and the prestressed concrete box girder two 32 adjacent with prestressed concrete box girder 1) and prestressed concrete box girder 2 32 (promptly being positioned at prestressed concrete box girder 2 32 front sides and the prestressed concrete box girder three 33 adjacent with prestressed concrete box girder 2 32) describes.
Work progress to prestressed concrete box girder 2 32 is following: after said prestressed concrete box girder one 17 constructions are accomplished and the mould bases vertical shift puts in place; Said forming panel moves to the casting and constructing position of prestressed concrete box girder 2 32; Again according to the method described in the step 1; Promptly the concrete casting injection forming method according to conventional prestressed concrete box girder carries out pouring concrete construction to prestressed concrete box girder 2 32; And the prestressed concrete box girder support fixation of casting complete is between 2# bridge pier 30 and 3# bridge pier 31, and the pouring concrete construction process of prestressed concrete box girder 2 32 is seen for details Fig. 5; Afterwards, according to the method described in the step 2, accomplish the knockout course of said forming panel; Then, according to the method described in the step 3, accomplish the traversing process of die sinking of said forming panel; At last; According to the method described in the step 4; Promote said left side girder system and right side girder system synchronization and move forward, and said forming panel is moved to the casting and constructing position of prestressed concrete box girder 3 33, then accomplish the work progress of prestressed concrete box girder 2 32.And carry out before the mould bases vertical shift (specifically being that said forming panel is moved to before the casting and constructing position of prestressed concrete box girder 3 33); The bottom support unit that needs will originally be laid in earlier on the 1# bridge pier 29 moves on the 4# bridge pier 34, and said 4# bridge pier 34 is positioned at 3# bridge pier 31 front sides and adjacent with 3# bridge pier 31.
Work progress to prestressed concrete box girder 3 33 is following: after said prestressed concrete box girder 2 32 constructions are accomplished and the mould bases vertical shift puts in place; Said forming panel moves to the casting and constructing position of prestressed concrete box girder 3 33; Again according to the method described in the step 1; Promptly the concrete casting injection forming method according to conventional prestressed concrete box girder carries out pouring concrete construction to prestressed concrete box girder 3 33; And the prestressed concrete box girder support fixation of casting complete is between 3# bridge pier 31 and 4# bridge pier 34, and the pouring concrete construction process of prestressed concrete box girder 3 33 is seen for details Fig. 6; Afterwards, according to the method described in the step 2, accomplish the knockout course of said forming panel; Then, according to the method described in the step 3, accomplish the traversing process of die sinking of said forming panel; At last; According to the method described in the step 4; Promote said left side girder system and right side girder system synchronization and move forward, and said forming panel is moved to the casting and constructing position of prestressed concrete box girder 3 33, then accomplish the work progress of prestressed concrete box girder 3 33.And carry out before the mould bases vertical shift (specifically being that said forming panel is moved to before the casting and constructing position of next Kong Liang of prestressed concrete box girder 3 33); The bottom support unit that needs will originally be laid in earlier on the 2# bridge pier 30 moves on the 5# bridge pier, and said 5# bridge pier is positioned at 4# bridge pier 34 front sides and adjacent with 4# bridge pier 34.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.
Claims (10)
1. mobile formwork is used in large-span continuous beam construction, it is characterized in that: comprise the bottom level support system, about two symmetries be installed on the said bottom level support system and can be in girder system that said bottom level support system moves forward and backward synchronously, be installed in the transverse beam system in the said girder system and be installed in the outer modular system on the said transverse beam system; The large-span continuous beam of constructing is a multi-hole beam, and each Kong Liang is the prestressed concrete box girder of support fixation between front and back two adjacent groups bridge piers (1), and said bridge pier (1) is laid on the horizontal cushion cap (35);
Said outer modular system comprises the forming panel that the current whole Kong Liang that constructs is carried out moulding by casting; The structure of the inner forming cavity of said forming panel and size all with the current structure of putting in order Kong Liang and measure-alike of constructing, and the installation position of said forming panel is consistent with the current installation position of putting in order Kong Liang of constructing; Said forming panel by about the gang forms laid of two symmetries assemble; Two said gang forms are respectively left side gang form and the right side gang form that is positioned at gang form right side, said left side, and the structure of said left side gang form and right side gang form is all identical with size;
Said bottom level support system comprises the bottom support unit that three structures and size are all identical; Three said bottom support unit are laid in respectively on three groups of bridge piers (1); The structure of three groups of said bridge piers (1) and three all identical with size is respectively bridge pier one, bridge pier two and the bridge pier of laying continuously from front to back three, and current the construction put in order hole beam support fixation between said bridge pier two and said bridge pier three; Said bottom support unit comprises the horizontal shore that is fixed on the horizontal cushion cap (35); The left and right sides on the said horizontal shore is laid with respectively and promotes the vertical push unit of girder that two said girder systems move forward and backward, and the quantity of the vertical push unit of said girder is that two and the two are symmetry and lay;
Two said girder systems are respectively left side girder system and the right side girder system that is positioned at said left side girder system right side; And said left side girder system and said right side girder system include and are level to the girder of laying (2); The front and back end portion of said girder (2) is equipped with preceding guide beam (4) and back guide beam (5) respectively; Guide beam (4) and back guide beam (5) are all and girder (2) is laid on the same horizon and the three is assemblied to form the vertical equity beam that a longitudinal length is not less than spacing between said bridge pier one and the bridge pier three before said, and said vertical equity beam is laid on the vertical push unit of said girder;
Said transverse beam system by about the crossbeam unit laid of two symmetries assemble; Two said crossbeam unit are respectively crossbeam unit, left side and the crossbeam unit, right side that is laid in right side, crossbeam unit, said left side; Crossbeam unit, said left side comprises and is installed in the girder system of said left side and can in the girder system of said left side, carries out the left side crossbeam (3-1) of move left and right and be installed in left side crossbeam (3-1) going up and drive the horizontal push unit one that left side crossbeam (3-1) carries out move left and right; Crossbeam unit, said right side comprises and is installed in the girder system of said right side and can in the girder system of said right side, carries out the right side crossbeam (3-2) of move left and right and be installed in right side crossbeam (3-2) going up and driving the horizontal push unit two that right side crossbeam (3-2) carries out move left and right that said left side crossbeam (3-1) and right side crossbeam (3-2) are laid on the same horizon and between the two and connect through removable connector; Said left side girder system is provided with and drives the vertical ejection device one that left side crossbeam (3-1) moves up and down, and said right side girder system is provided with the action synchronously of said vertical ejection device one and drives the vertical ejection device two that right side crossbeam (3-2) moves up and down; Said left side gang form is installed on the left side crossbeam (3-1) and can carries out move left and right synchronously with left side crossbeam (3-1), and said right side gang form is installed on the right side crossbeam (3-2) and can carries out move left and right synchronously with right side crossbeam (3-2).
2. use mobile formwork according to the described a kind of large-span continuous beam construction of claim 1, it is characterized in that: also comprise two C ellbeams, and two C ellbeams are respectively preceding C ellbeam (14) and back C ellbeam (15); C ellbeam (14) is erected between preceding guide beam (4) rearward end in preceding guide beam (4) rearward end and the said right side girder system in the girder system of said left side before said, and said C ellbeam (15) afterwards is erected between back guide beam (5) leading section and back guide beam (5) leading section in the girder system of said right side in the girder system of said left side.
3. use mobile formwork according to claim 1 or 2 described a kind of large-span continuous beam constructions, it is characterized in that: also comprise the control system; The vertical push unit of said girder, laterally push unit one, laterally push unit two, vertically prop up ejection device one and vertically prop up ejection device two and control by said control system.
4. use mobile formwork according to claim 1 or 2 described a kind of large-span continuous beam constructions, it is characterized in that: the vertical push unit of said girder, laterally push unit one, horizontal push unit two, vertically prop up ejection device one and vertically prop up ejection device two and be fluid power system.
5. use mobile formwork according to the described a kind of large-span continuous beam construction of claim 3; It is characterized in that: said girder (2) bottom also is provided with the vertical height guiding mechanism that the vertical height of girder (2) is adjusted, and said vertical height guiding mechanism is controlled by said control system; And the left and right sides of said horizontal shore is laid with respectively and promotes the horizontal push unit of girder that two said girder systems carry out move left and right, and the horizontal push unit of said girder is controlled by said control system.
6. use mobile formwork according to claim 1 or 2 described a kind of large-span continuous beam constructions, it is characterized in that: the left part of the right part of said left side crossbeam (3-1) or right side crossbeam (3-2) is provided with the dismounting platform (6) that said removable connector is carried out dismounting.
7. use mobile formwork according to claim 1 or 2 described a kind of large-span continuous beam constructions, it is characterized in that: the side form support frame (18) that said left side gang form and right side gang form include soffit formwork (8), are installed in the side template (9) on the soffit formwork (8) and side template (9) is supported; Soffit formwork (8) level in the gang form of said left side is installed on the left side crossbeam (3-1), and the side form support frame (18) in the gang form of said left side is fixed on the left side crossbeam (3-1) through supporting component one; Soffit formwork (8) level in the gang form of said right side is installed on the right side crossbeam (3-2), and the side form support frame (18) in the gang form of said right side is fixed on the right side crossbeam (3-2) through supporting component two.
8. use mobile formwork according to claim 1 or 2 described a kind of large-span continuous beam constructions; It is characterized in that: said horizontal shore comprises the horizontal support crossbeam (12) that is positioned at directly over the horizontal cushion cap (35), and top, horizontal cushion cap (35) left and right sides correspondence is provided with the support bracket (13) that horizontal support crossbeam (12) is carried out support fixation; Said left side girder system is provided with the transverse slipway one (11) that supplies left side crossbeam (3-1) move left and right, and said right side girder system is provided with the transverse slipway two that supplies right side crossbeam (3-2) move left and right; Current upper front end of constructing whole Kong Liang is provided with rear cross beam (16).
9. method of utilizing mobile formwork according to claim 1 that large-span continuous beam is constructed; It is characterized in that: the large-span continuous beam of constructing is a multi-hole beam; And each Kong Liang is the prestressed concrete box girder of support fixation between front and back two adjacent groups bridge piers (1), and said bridge pier (1) is laid on the horizontal cushion cap (35); And during practice of construction, from front to back the multi-hole beam in the construction large-span continuous beam is constructed respectively according to the installation position sequencing; In the large-span continuous beam of constructing the job practices of each Kong Liang all identical, and for arbitrary Kong Liang, its job practices may further comprise the steps:
Step 1, system beam: according to the concrete casting injection forming method of conventional prestressed concrete box girder; And utilize said forming panel that the current whole Kong Liang that constructs is carried out pouring concrete construction; And the prestressed concrete box girder support fixation of casting complete is between said bridge pier two and said bridge pier three, said bridge pier two and said bridge pier three adjacent and its be positioned at said bridge pier three front sides;
In this step; In the pouring concrete construction process; Said vertical ejection device one all is in a upwards top state with said vertical ejection device two, and said forming panel is in the matched moulds state, connects as one through removable connector between said left side crossbeam (3-1) and the right side crossbeam (3-2); The current whole Kong Liang that constructs is carried out before the pouring concrete construction, and the installation position that should guarantee said forming panel is consistent with the current installation position of putting in order Kong Liang of constructing;
Step 2, the demoulding: shrink downwards with said vertical ejection device two through controlling said vertical ejection device one; Make left side crossbeam (3-1) and right side crossbeam (3-2) move down synchronously; And left side crossbeam (3-1) and right side crossbeam (3-2) move down in the process synchronously; Drive said forming panel and move down synchronously, and the knockout course of the said forming panel of corresponding completion;
Step 3, outer modular system die sinking are traversing: at first, remove the said removable connector between left side crossbeam (3-1) and the right side crossbeam (3-2); Afterwards; Through controlling said horizontal push unit one and said horizontal push unit two; Driving left side crossbeam (3-1) and right side crossbeam (3-2) laterally moves respectively laterally; Till the spacing between left side crossbeam (3-1) and the right side crossbeam (3-2) is enough to through one group of said bridge pier (1), then accomplish the traversing process of die sinking of said forming panel;
And in the horizontal laterally respectively moving process of left side crossbeam (3-1) and right side crossbeam (3-2), the said left side gang form and the said right side gang form that drive in the said forming panel laterally move respectively synchronously laterally;
In this step; After accomplishing the traversing process of die sinking of said forming panel; Need judge that also whether the current whole Kong Liang that constructs is last Kong Liang of institute's construction large-span continuous beam: when judgement draw current construction put in order Kong Liang by during last hole beam of construction large-span continuous beam, whole work progresss of the completion large-span continuous beam of constructing then; Otherwise, get into step 4;
Step 4, mould bases vertical shift: be laid in two vertical push units of girder on said bridge pier one, bridge pier two and the bridge pier three respectively through control, promote said left side girder system and right side girder system synchronization and move forward; And said left side girder system and right side girder system synchronization move forward in the process; Drive said transverse beam system and said forming panel moves forward synchronously; Put in order the casting and constructing position of next adjacent Kong Liang of hole beam until said forming panel being moved to, then accomplish the work progress of the current whole Kong Liang that constructs with current the construction;
Said bridge pier one and said bridge pier two adjacent and its be positioned at said bridge pier two front sides; Carry out in the step 4 in the mould bases vertical shift process, be laid with said bottom support unit on said bridge pier one, bridge pier two and the bridge pier three;
In this step; After said forming panel moved to the casting and constructing position with current next the adjacent Kong Liang of whole hole beam that constructs; Through controlling said horizontal push unit one and said horizontal push unit two; Drive left side crossbeam (3-1) and right side crossbeam (3-2) and laterally move to the inside respectively, till said left side gang form in left side crossbeam (3-1) and right side crossbeam (3-2) and said forming panel and said right side gang form all close up; Afterwards, through said removable connector left side crossbeam (3-1) and right side crossbeam (3-2) are assembled into one;
Step 5, repeatedly repeating step one is accomplished the construction of follow-up each Kong Liang successively to step 4, until whole work progresss of accomplishing the large-span continuous beam of constructing.
10. according to the described method of claim 9; It is characterized in that: the upper front end of the prestressed concrete box girder of casting complete is provided with rear cross beam (16) in the step 1; And after in the step 4 said forming panel being moved to the casting and constructing position with current next the adjacent Kong Liang of whole hole beam that constructs, also need rear cross beam (16) and said forming panel be fastenedly connected and be one through lifting part.
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| CN102926327A (en) * | 2012-11-16 | 2013-02-13 | 上海市机械施工有限公司 | Rubber-tyred guide beam bridge girder erection machine and installation technology for discrete spanning assembly and integral spanning longitudinal shift of segmental beam |
| CN103452052A (en) * | 2013-08-26 | 2013-12-18 | 中铁六局集团有限公司 | Movable mold hanging equipment for closing swivel bridges and closure section construction method |
| CN105297633A (en) * | 2015-10-23 | 2016-02-03 | 中铁六局集团有限公司 | Assembly and construction method of movable formwork vehicle |
| CN108425323A (en) * | 2018-03-23 | 2018-08-21 | 中铁建大桥工程局集团第四工程有限公司 | A kind of cast-in-place box beam assembled moving template |
| CN110528395A (en) * | 2019-09-23 | 2019-12-03 | 中交第二航务工程局有限公司 | A kind of grouping folding mobile formwork and its curve are crossed across construction method |
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| CN102926327A (en) * | 2012-11-16 | 2013-02-13 | 上海市机械施工有限公司 | Rubber-tyred guide beam bridge girder erection machine and installation technology for discrete spanning assembly and integral spanning longitudinal shift of segmental beam |
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| CN105297633A (en) * | 2015-10-23 | 2016-02-03 | 中铁六局集团有限公司 | Assembly and construction method of movable formwork vehicle |
| CN108425323A (en) * | 2018-03-23 | 2018-08-21 | 中铁建大桥工程局集团第四工程有限公司 | A kind of cast-in-place box beam assembled moving template |
| CN110528395A (en) * | 2019-09-23 | 2019-12-03 | 中交第二航务工程局有限公司 | A kind of grouping folding mobile formwork and its curve are crossed across construction method |
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