CN102587293B - System and method for cradle cantilever construction of variable-width section concrete girder - Google Patents

System and method for cradle cantilever construction of variable-width section concrete girder Download PDF

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Publication number
CN102587293B
CN102587293B CN201210077549.1A CN201210077549A CN102587293B CN 102587293 B CN102587293 B CN 102587293B CN 201210077549 A CN201210077549 A CN 201210077549A CN 102587293 B CN102587293 B CN 102587293B
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China
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bed die
concrete girder
strutting arrangement
main couple
bracing
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CN102587293A (en
Inventor
余绍宾
许佳平
张瑞霞
姚发海
李军堂
涂满明
毛伟琦
贾卫中
杜凤
刘灿
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China Railway Major Bridge Engineering Group Co Ltd MBEC
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China Railway Major Bridge Engineering Co Ltd
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Abstract

The invention discloses a system and a method for cradle cantilever construction of a variable-width section concrete girder. The system comprises a cradle device and a travelling device, the cradle device comprises a plurality of primary trusses and a plurality of bottom die supporting devices, each bottom die supporting device comprises a sliding beam and a transverse beam, the travelling device comprises a primary truss travelling device and a bottom die supporting device travelling device, the primary truss travelling device comprises a plurality of passage beams and primary truss pushing jacks in one-to-one correspondence to the primary trusses, the corresponding passage beams are arranged into skew lines according to the widened slope ratio of the girder, the bottom die supporting device travelling device comprises hoists and bottom die transversely-moving jacks, the hoists are fixed onto the corresponding primary trusses and are connected with front hangers through steel wire ropes, the bottom die transversely-moving jacks are fixed onto transversely moving reaction seats on the transverse beams, and extending ends of the bottom die transversely-moving jacks are abutted to the sliding beams. During longitudinal travelling of a cradle, the cradle is transversely deflected by means of transverse jacking of the bottom die transversely-moving jacks, and the system and the method can adapt to cradle cantilever construction of a variable-width bridge girder.

Description

Cradle cantilever construction of variable-width section concrete girder system and method
Technical field
The present invention relates to field of bridge construction, be specifically related to cradle cantilever construction of variable-width section concrete girder system and method.
Background technology
Hanging Basket cantilever construction has become the main construction method of modern wide span bridge building, and it does not need to set up shape steel bracket, does not use large-scale loop wheel machine, has that structure is light, the system of spelling is simple and convenient, without advantages such as ballasts.
Existing hanging basket cantilever method construction, Hanging Basket, along bridge to straight line traveling, is therefore only applicable to the case beam in wide cross section, cannot in the box girder construction of widened sections, adopt.
Summary of the invention
Technical problem to be solved by this invention is to solve the problem of hanging basket cantilever method construction that how to adopt in the box girder construction of widened sections.
In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is to provide a kind of cradle cantilever construction of variable-width section concrete girder system, comprise hanging basket device and running gear, described hanging basket device comprises the many groups bed die bracing or strutting arrangement that is arranged on many groups main couple of concrete girder top and is arranged on concrete girder below, described bed die bracing or strutting arrangement is by a left side, many sliding Liang Heqian of right layout, two crossbeams of rear layout form tower structure, and described main couple be provided with for the anchoring of corresponding described bed die bracing or strutting arrangement before, after hang and hang temporarily, described running gear comprises main couple running gear and bed die bracing or strutting arrangement running gear, described main couple running gear comprise with every group of main couple one by one corresponding setting Duo Zu aisle beam and organize main couple pushing tow jack more, described Duo Zu aisle beam respectively along bridge to being anchored on the end face of concrete girder, and the slope that corresponding aisle beam broadens by concrete girder is arranged to skew lines, described bed die bracing or strutting arrangement running gear comprises hoist engine and the traversing jack of bed die, described hoist engine is fixed on corresponding main couple, and be connected with the upper end of front hanging by wire rope, the bottom surface, one end of described crossbeam is provided with traversing counter-force seat, the traversing jack of described bed die is fixed on described traversing counter-force seat, and the end face of external part and corresponding sliding beam offsets.
In said system, described bed die bracing or strutting arrangement running gear also comprises bed die vertical shift jack, on the front end of concrete girder or cross wall, be fixed with anchor beam, longitudinal traveling counter-force seat is set on the end face of described Hua Liang rear end, described bed die vertical shift jack is fixed on described anchor beam, and described bed die vertical shift jack draws steel strand by stretch-draw and is connected with described longitudinal traveling counter-force seat.
The present invention also provides a kind of method of cradle cantilever construction of variable-width section concrete girder, utilizes said system to carry out, and specifically comprises the following steps:
After A10, concrete girder the first segmental construction complete, with hanging bed die bracing or strutting arrangement is anchored on first sections of construct temporarily, then remove anchor device afterwards and forward and backward hanging and being connected of bed die bracing or strutting arrangement;
A20, successively by corresponding main couple integral pushing to next sections of concrete girder, after then utilizing, anchor device is respectively by main couple and concrete girder the first sections anchoring;
A30, will front hang after corresponding main couple, move to corresponding position, and with the anchoring of bed die bracing or strutting arrangement, then remove and hang temporarily;
A40, on corresponding main couple, hoist engine is installed, bed die vertical shift jack is installed on bed die bracing or strutting arrangement;
A50, hang before utilizing hoist engine dilatory corresponding and make to slide accordingly beam reach, utilize dilatory this cunning beam of bed die vertical shift jack synchronously to move forward simultaneously, bed die bracing or strutting arrangement is drawn to next sections to concrete girder, in the longitudinal traveling process of bed die bracing or strutting arrangement, utilize the traversing jack of bed die to make to slide accordingly beam laterally traveling simultaneously;
A60, recover forward and backward anchor connection of hanging with bed die bracing or strutting arrangement and corresponding main couple, carry out cast-in-place construction.
The present invention, in the longitudinal traveling process of Hanging Basket, the horizontal initiatively top lifting of employing jack realizes the lateral deflection of Hanging Basket, can adapt to the cradle cantilever construction of the girder bridge construction that broadens.
Accompanying drawing explanation
Fig. 1 be system provided by the invention along bridge to view;
Fig. 2 is system direction across bridge view provided by the invention;
Fig. 3 is the arrangement diagram of aisle beam in system provided by the invention;
Fig. 4 is the arrangement diagram of bed die vertical shift jack in system provided by the invention.
Fig. 5-Fig. 7 is suspended basket step schematic diagram in system provided by the invention;
The specific embodiment
In order to adapt to the application of cradle cantilever construction in the box girder construction of widened sections, the invention provides a kind of cradle cantilever construction of variable-width section concrete girder system, comprise hanging basket device and running gear, by running gear realize hanging basket device longitudinally, lateral deflection walks.Below in conjunction with accompanying drawing, the present invention is described in detail.
As Fig. 1, shown in Fig. 2, hanging basket device comprises four groups of main couples 11 that are arranged on concrete girder 100 tops, 12, 13, 14 and eight groups of bed die bracing or strutting arrangements 10 being arranged on concrete girder below, four groups of main couples 11, 12, 13, 14 are connected to form by two main couples respectively, and uniform along direction across bridge, every group of corresponding two groups of bed die bracing or strutting arrangements 10 of main couple, the front end of bed die bracing or strutting arrangement 10 and middle part be respectively equipped with for corresponding main couple anchoring before, after hang 4, 5, the rear end of main couple is anchored on concrete girder 100 by rear anchor device 3 respectively, on bed die bracing or strutting arrangement 10, be also provided with for corresponding main couple anchoring temporarily hang 6(referring to Fig. 5 temporarily).
Bed die bracing or strutting arrangement 10 forms frame construction by two sliding beams 9 and the crossbeam arranged in front and rear 8 of left and right layout, and hang 4,5 and corresponding main couple anchor connection by forward and backward, crossbeam 8 is arranged on sliding beam 9, bottom die platform is built on the crossbeam 8 of many group bed die bracing or strutting arrangements 10, thereby realizes the cast-in-place construction of concrete girder.
Again referring to Fig. 5-Fig. 7, running gear comprises main couple running gear and bed die bracing or strutting arrangement running gear, main couple running gear comprises and every group of main couple 11, 12, 13, the 14 Duo Zu aisle beams 21 that correspondence arranges one by one, 22, 23, 24 and many group main couple pushing tow jack 32, Duo Zu aisle beam 21, 22, 23, 24 respectively along bridge to being anchored on the end face of concrete girder 100, and the slope that corresponding aisle beam broadens by concrete girder is arranged to skew lines (referring to Fig. 3), under the effect of main couple pushing tow jack 32, each organizes the lateral deflection of realizing corresponding main couple in main couple Yan aisle beam vertical shift process, in the present embodiment, main couple 11, 12 along traveling priority, and main couple 13, 14 move along oblique line, make main couple 13, 14 in vertical shift, realized lateral deflection.
Refer to Fig. 6, bed die running gear comprises that hoist engine 31, bed die vertical shift jack 34 and the traversing jack 36(of bed die are shown in Fig. 4 again).Hoist engine 31 is fixed on corresponding main couple, and is connected with the upper end of front hanging 4 by wire rope 39, and the front end of main couple is also provided with angle pulley 38, and wire rope 39 is walked around angle pulley 38 and is connected with the upper end of front hanging 4.On the front end of concrete girder 100 or cross wall, be fixed with anchor beam 33, on sliding beam 9 rear end end faces, longitudinal traveling counter-force seat 35 is set, bed die vertical shift jack 34 is fixed on anchor beam 33, bed die vertical shift jack 34 draws steel strand 40 by stretch-draw and is connected with longitudinal traveling counter-force seat 35, by the dilatory realization of bed die vertical shift jack 34, slide longitudinal reach of beam 9, before the while, hung 4 by the synchronous dilatory traveling of hoist engine 31.
Refer to Fig. 4, the bottom surface, one end of crossbeam 8 is provided with traversing counter-force seat 37 again, and the traversing jack 36 of bed die is fixed on traversing counter-force seat 37, and the end face of external part and sliding beam 9 offsets.In the process of sliding beam 9 vertical shifts, by controlling the traversing jack 36 initiatively top liftings of bed die, realized sliding beam 9 and longitudinally in traveling process, carried out lateral deflection simultaneously.
The present invention also provides a kind of cradle cantilever construction of variable-width section concrete girder method, as shown in Fig. 5-7, comprises the following steps:
After A10, concrete girder the first sections 100 have been constructed, bed die bracing or strutting arrangement 10 is transferred and made it depart from the first sections 100 bottom surface, to it is moved; Use is hung 6 temporarily bed die bracing or strutting arrangement 10 is anchored on first sections 100 of having constructed; Then remove the anchoring of rear anchor device on corresponding main couple 3 and concrete girder the first sections 100, and forward and backward hang 4,5 with being connected of bed die bracing or strutting arrangement 10;
A20, respectively utilize main couple pushing tow jack 32 successively by corresponding main couple integral pushing to next sections of concrete girder, after then utilizing, anchor device 3 is respectively by corresponding main couple and concrete girder the first sections anchoring.
Steps A 10, A20 are as shown in Figure 5.
A30, by jack, incite somebody to action and to hang 4 before corresponding move to corresponding position after main couple, and by lower end and 10 anchorings of bed die bracing or strutting arrangement of front hanging 4, dismounting hangs 6 temporarily.
A40, on corresponding main couple, hoist engine 31 is being installed, and in the front end corner of main couple, angle pulley 38 is being set, by wire rope 39, hoist engine 31 is being connected with the upper end of front hanging 4; Bed die vertical shift jack 34 is installed, and is made it and be connected with longitudinal traveling counter-force seat 35 of sliding beam 9 rear ends by steel strand 40.
Steps A 30-A40 as shown in Figure 6.
A50, hang 4 reaches before utilizing hoist engine 31 dilatory, utilize the dilatory sliding beam 9 of bed die vertical shift jack 34 synchronously to move forward simultaneously, thereby next sections by bed die bracing or strutting arrangement 10 longitudinal tractions to concrete girder, adopt hoist engine and bed die vertical shift jack 34 double-heading modes, make the vertical shift of bed die bracing or strutting arrangement more safe and reliable; In the longitudinal traveling process of bed die bracing or strutting arrangement 10, utilize the traversing jack 36 of bed die to make the laterally traveling (in bed die bracing or strutting arrangement traveling process, traversing amount can be adjusted according to actual conditions) simultaneously of sliding beam 9.
A60, recover forward and backward and hang 4,5 and the anchoring of bed die bracing or strutting arrangement 10 and main couple, carry out the cast-in-place construction of next sections of concrete girder.
Steps A 50, A60 are as shown in Figure 7.
The present invention is not limited to above-mentioned preferred forms, and anyone should learn the structural change of making under enlightenment of the present invention, and every have identical or close technical scheme with the present invention, within all falling into protection scope of the present invention.

Claims (3)

1. cradle cantilever construction of variable-width section concrete girder system, comprises hanging basket device and running gear, it is characterized in that,
Described hanging basket device comprises the many groups bed die bracing or strutting arrangement that is arranged on many groups main couple of concrete girder top and is arranged on concrete girder below, described bed die bracing or strutting arrangement forms tower structure by many sliding beams and two crossbeams arranged in front and rear of left and right layout, and described main couple is provided with for hang and hang with the forward and backward of corresponding described bed die bracing or strutting arrangement anchoring temporarily;
Described running gear comprises main couple running gear and bed die bracing or strutting arrangement running gear;
Described main couple running gear comprise with every group of main couple one by one corresponding setting Duo Zu aisle beam and organize main couple pushing tow jack more, described Duo Zu aisle beam respectively along bridge to being anchored on the end face of concrete girder, and the slope that corresponding aisle beam broadens by concrete girder is arranged to skew lines;
Described bed die bracing or strutting arrangement running gear comprises hoist engine and the traversing jack of bed die, described hoist engine is fixed on corresponding main couple, and be connected with the upper end of front hanging by wire rope, the bottom surface, one end of described crossbeam is provided with traversing counter-force seat, the traversing jack of described bed die is fixed on described traversing counter-force seat, and the end face of external part and corresponding sliding beam offsets.
2. cradle cantilever construction of variable-width section concrete girder system as claimed in claim 1, it is characterized in that, described bed die bracing or strutting arrangement running gear also comprises bed die vertical shift jack, on the front end of concrete girder or cross wall, be fixed with anchor beam, longitudinal traveling counter-force seat is set on the end face of described Hua Liang rear end, described bed die vertical shift jack is fixed on described anchor beam, and described bed die vertical shift jack draws steel strand by stretch-draw and is connected with described longitudinal traveling counter-force seat.
3. the method for cradle cantilever construction of variable-width section concrete girder, is characterized in that, utilizes system as claimed in claim 2 to carry out, and specifically comprises the following steps:
After A10, concrete girder the first segmental construction complete, with hang temporarily, bed die bracing or strutting arrangement is anchored on first sections of having constructed, then remove rear anchor device on corresponding main couple and the anchoring of concrete girder the first sections, and forward and backward hanging and being connected of bed die bracing or strutting arrangement;
A20, successively by corresponding main couple integral pushing to next sections of concrete girder, after then utilizing, anchor device is respectively by the front end anchoring of corresponding main couple and concrete girder the first sections;
A30, will front hang after corresponding main couple, move to corresponding position, and with the anchoring of bed die bracing or strutting arrangement, then remove and hang temporarily;
A40, on corresponding main couple, hoist engine is installed, bed die vertical shift jack is installed on bed die bracing or strutting arrangement;
A50, hang before utilizing hoist engine dilatory corresponding and make to slide accordingly beam reach, utilize dilatory this cunning beam of bed die vertical shift jack synchronously to move forward simultaneously, bed die bracing or strutting arrangement is drawn to next sections to concrete girder, in the longitudinal traveling process of bed die bracing or strutting arrangement, utilize the traversing jack of bed die to make to slide accordingly beam laterally traveling simultaneously;
A60, recover forward and backward anchor connection of hanging with bed die bracing or strutting arrangement and corresponding main couple, carry out cast-in-place construction.
CN201210077549.1A 2012-03-22 2012-03-22 System and method for cradle cantilever construction of variable-width section concrete girder Active CN102587293B (en)

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CN102758404B (en) * 2012-07-19 2014-01-08 中铁十六局集团第一工程有限公司 Front fulcrum hanging basket travelling device of spatial V-shaped cable-stayed bridge
CN105714691B (en) * 2016-02-19 2017-06-09 四川公路桥梁建设集团有限公司 A kind of curve low-pylon cable-stayed bridge Hanging Basket interlaced arrangement and traversing construction method
WO2021212921A1 (en) * 2020-04-21 2021-10-28 中铁广州工程局集团有限公司 Construction system for widened section of half-through arch bridge
CN111691298A (en) * 2020-04-21 2020-09-22 中铁广州工程局集团有限公司 Construction method for wide section of half-through arch bridge

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JP3038163B2 (en) * 1997-04-28 2000-05-08 株式会社ピー・エス Overhang work equipment
JP2008031768A (en) * 2006-07-31 2008-02-14 Ps Mitsubishi Construction Co Ltd Cantilever overhanging erection method for corrugated steel plate web box girder bridge
CN201109899Y (en) * 2007-08-30 2008-09-03 中铁大桥局集团第一工程有限公司 Lower girder-sliding type construction hanging basket
CN101250856B (en) * 2007-08-30 2010-08-04 中铁大桥局集团第一工程有限公司 Echelon cradle as well as construction method thereof
CN102220740B (en) * 2011-04-13 2012-09-26 湖南中铁五新钢模有限责任公司 Cantilever-concreting construction hanging basket for four-lane and wide-width continuous beam of high-speed rail
CN202055176U (en) * 2011-04-18 2011-11-30 中交武汉港湾工程设计研究院有限公司 Composite hanging basket with center cable plane and big cantilever girder structure

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