CN109440653B - Suitable for the erecting beam construction method and auxiliary shifting beam equipment under special space - Google Patents
Suitable for the erecting beam construction method and auxiliary shifting beam equipment under special space Download PDFInfo
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- CN109440653B CN109440653B CN201811515479.7A CN201811515479A CN109440653B CN 109440653 B CN109440653 B CN 109440653B CN 201811515479 A CN201811515479 A CN 201811515479A CN 109440653 B CN109440653 B CN 109440653B
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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Abstract
The invention discloses a kind of erecting beam construction methods being suitable under special space of the invention, it is influenced based on Bridge Erector by headroom in tunnel, cannot complete to set a roof beam in place under normal attitude task in the case where, beam equipment is moved by the way that auxiliary is arranged in tunnel, and the operation such as secondary drop arm for combining Bridge Erector, realize that Bridge Erector is not disassembled, in the case where not reequiping, effectively solve technical problem of the Bridge Erector in railway tunnel erecting beam construction, improve the effect of setting a roof beam in place, and the erecting beam construction technical experience of a set of preciousness is summarized for the construction operation of tunnel face, it is worth the reference and study of similar engineering, with wide applicability and very strong practicability.
Description
Technical field
The present invention relates to a kind of erecting beam construction methods and auxiliary to move beam equipment, and in particular to one kind is suitable under special space
Erecting beam construction method and auxiliary move beam equipment.
Background technique
It sets a roof beam in place in engineering in tunnel face, especially single-track tunnel mouth is set a roof beam in place engineer operation, the tunnel of different geographical, tunnel
Interior headroom size is not completely unified, and therefore, in operation process of setting a roof beam in place, Bridge Erector is often influenced by headroom in tunnel,
Task of setting a roof beam in place cannot be completed under normal attitude.
To be located at the domestic newly-built illiteracy in Liuyang City, Hunan Province west to lucky (peace) section in Central China's railway coal transport facility high mountain (sun)
MHTJ-29 is marked for the single-track railway of section.
Total track length 61.412km, the long 33.62km of bridge tunnel, account for the 54.7% of total track length, and heavily loaded Simple T-Girders use tire
The transport of formula beam car, TJ180 Bridge Erector are set up；Bridge tunnel is connected location at eight, and tunnel face sets up 24m beam, tunnel face at five at three
Set up 32m beam.
Covering magnificent railway single to have tiny fragments of stone, coal, etc. tunnel width of ballast bed is 4.500m, and track structure height is 0.766m, two sides ditch electricity
Cable groove height is flushed with design rail top surface, and width is 0.950m, and the design above clear height in rail top surface is 6.720m, maximum clear span
For 6.670m；Tunnel exit mileage and Yue Yangduan abutment platform position mileage are overlapped, and abutment face width of ballast bed is 4.500m, two sides difference
The cable trough for being 0.850m and 1.00m equipped with width is highly 0.340m, and it is 4.200m and two kinds of 6.500m that abutment, which has length,
Form.
When beam car delivery Bridge Erector crosses tunnel transition, the height at beam car tire bottom to the capital Bridge Erector 2# is 5.700m,
The capital 2# face width be 4.200m, when tunnel is not laid a railway track inverted arch fill surface up 5.700 position when tunnel clear span be 4.080m；Therefore
Beam car delivery Bridge Erector, which is unsatisfactory for requirement by tunnel width, to be passed through.
Bridge Erector is normally set a roof beam in place under posture, Bridge Erector 2# column, 3# column height be respectively 8.400m, 8.100m, tunnel is not
Inverted arch fill surface to vault clear distance is 7.436 when laying a railway track, and when tunnel face is set a roof beam in place, 3# column and its generating set are in tunnel
Face；Therefore Bridge Erector is unsatisfactory for requirement by tunnel clear height cannot complete the task of setting a roof beam in place.
Both the above situation cannot complete frame under normal attitude when being that tunnel inverted arch fill surface reaches designed elevation
The situation of beam task.
Summary of the invention
To solve the deficiencies in the prior art, the purpose of the present invention is to provide one kind to be suitable under special space, do not disassemble,
Bridge Erector is not reequiped, the erecting beam construction method and auxiliary that can effectively set a roof beam in place move beam equipment.
In order to achieve the above objectives, the present invention adopts the following technical scheme that:
Erecting beam construction method suitable for railway tunnel, comprising the following steps:
S1, using the middle line in tunnel as line of symmetry, in the Bridge Erector of setting drop arm in tunnel, in arranging water on the pier in tunnel
Flat track；
The track includes the first track and the second track of splicing, and seam is partial to the second rail side；
S2, Bridge Erector after midline is placed on track, elapse the first beam piece to the second rail side, and are the second beam piece
Placement reserve width；
Second beam piece is placed on track in midline by S3, Bridge Erector；
S4, arm Bridge Erector is dropped again, after Bridge Erector lifts the second beam piece, remove the first track, and by Bridge Erector by the
Two beam pieces are moved to the first rail side, so that setting up the second beam piece after the second beam piece side end alignment middle line；
S5, in elapsing the first beam piece on the second track, abut its side end with the second beam piece；
S6, Bridge Erector lift the first beam piece, after removing the second track, set up the first beam piece；
S7, after fixing the first beam piece and the second beam piece, operation of setting a roof beam in place is completed.
Above-mentioned steps S2 and S3 further include fixing measure, A, it is mobile when: double jacks are used at beam piece both ends respectively, are existed in chiasma type
Beam piece is fixed on the pre-buried steel construction of pier in transverse direction；
Beam piece is in passage, simultaneously operating jack, contrary jack Synchronous Radio is elapsed with pulling force and beam piece, with drawing
The identical jack synchronous of power and beam piece passage direction；
B, when standing: the one or both sides of beam piece are supported with torus wood, preferably the side gear Zha Qiang of beam piece.
Above-mentioned Bridge Erector moves the second beam piece, and the complete machine including Bridge Erector is moved moves with large arm.
The stress basis elapsed in above-mentioned steps S2 is the first track；The stress basis elapsed in step S5 is the second rail
Road.
The auxiliary of above-mentioned erecting beam construction method moves beam equipment, and the track of several adjustment holes is equipped with including one group of side,
One group of channel steel of left-hand thread on track, beam bottom support base is vertical to be anchored between channel steel；
The back seat of jack is fixed by being coupled deck through adjustment hole and track, and movable end abuts beam bottom support base.
Above-mentioned track is made up of the first track and the second track clamping plate connection.
Further, the middle line in tunnel is partial in the seam position of above-mentioned first track and the second track.
The length of above-mentioned first track is greater than the width of first beam, the second beam piece；
The length of second track is determined from the first beam piece to the length that the second orbital direction elapses.
The position of above-mentioned first track adjustment apertures and spacing, according to the stroke of jack and the first beam piece to the second track
The length of direction passage determines；
The position of the second track adjustment apertures and spacing, according to the stroke of jack and first beam to the first track
The length of direction passage determines.
Above-mentioned rail base is equipped with several support piers, it is therefore an objective to which the supporting point for increasing track reduces its downwarp and influences auxiliary
Help the security performance and working performance for moving beam equipment.
The invention has the beneficial effects that:
The erecting beam construction method being suitable under special space of the invention, is influenced based on Bridge Erector by headroom in tunnel, no
Can complete to set a roof beam in place under normal attitude task in the case where, by tunnel be arranged auxiliary move beam equipment, and combine Bridge Erector
The operation such as secondary drop arm, in the case where realizing that Bridge Erector is not disassembled, do not reequiped, effectively solve Bridge Erector and set a roof beam in place in railway tunnel
Technical problem in construction improves the effect of setting a roof beam in place, and summarizes a set of setting a roof beam in place for preciousness for the construction operation of tunnel face and apply
Work technical experience is worth the reference and study of similar engineering, has wide applicability and very strong practicability.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of shifting beam equipment of the invention.
Fig. 2 is the structural schematic diagram of inverted arch fill surface in tunnel of the invention.
Fig. 3 is the schematic diagram that beam, feeding beam operation are transported outward in tunnel of the invention.
Fig. 4 is the position view after the positive passage of the first beam piece of the invention.
Fig. 5 is the position view after the moving of the second beam piece of the invention.
Fig. 6 is the position view after the reversed passage of the first beam piece of the invention.
Fig. 7 is the structural schematic diagram after the second dismantling of track of the invention.
Attached meaning marked in the figure is as follows: 1, oil pump, 2, jack, 3, connection deck, 4, adjustment hole, and 5, first
Track 6, clamping plate, the 7, second track, 8, beam bottom branch iron brace, 9, channel steel；
11, practical inverted arch fill surface, 12, design inverted arch fill surface, 13, cable trough, 14, ditch, 15, design rail top surface,
16,0# platform, 17,1# pier, 18,2# column, 19,3# column；
21, the first beam piece, the 22, second beam piece.
Specific embodiment
Specific introduce is made to the present invention below in conjunction with the drawings and specific embodiments.
Dimensioning unit in attached drawing 1-7 is centimetre.
The equipment that the embodiment of the present invention uses includes:
TJ180 type Bridge Erector: for setting up the prestressed steel reinforced concrete beam piece of railway 32m and following span, specified
180 tons of Beijing South Maxpower Technology Co. Ltd's power, belong to single armed freely-supported type, is able to achieve full width machinery traverse beam piece, can once fall beam in place, beam piece can be set up most
Big outer dimension (long * wide * high) 32*2.6*3.3m；Under nominal situation, machine shape size of setting a roof beam in place (long * wide * high) 58.2*
4.2*8.4m, it can be achieved that complete machine consigned tunnel and meet out tunnel 3m, into tunnel 1.5m(abutment end apart from tunnel face distance) and
Least radius is to set a roof beam in place under the special operation conditions such as 400m curved bridge.
The present invention is logical west to Central China's railway coal fortune to be located at the domestic newly-built illiteracy in Liuyang City, Hunan Province in technical background
Road high mountain (sun) Ji (peace) section MHTJ-29 is marked for single-track railway.
By studying constructing tunnel scheme repeatedly, and according to the high 5.700m in the capital 2#, top width when beam car delivery Bridge Erector
4.200m Extrapolation, in conjunction with CAD simplation validation, inverted arch fill surface absolute altitude lowers 0.352m(according to design inverted arch fill surface mark
When height is plus beam car delivery Bridge Erector, safe distance reckoning of the 2# column in tunnel is obtained), it can be ensured that Bridge Erector is logical safely
Cross tunnel (see figure 2)；Inverted arch fill surface absolute altitude is lowered after 0.352m (practical inverted arch fill surface), and inverted arch datum level at this time is in tunnel
The position of 0.070m below the bottom of trench of road two sides ditch, therefore tunnel ditch, cable trough will be unable to construct.
Assuming that using the inverted arch fill surface after lowering as benchmark face, with the height of the height 1.380m of beam car, Simple T-Girders
3.050m is calculated, and when fully considering beam car to Bridge Erector feeding beam, the safe distance and 2# column abutment (tunnel face 0# under 3# column
Abutment) on safe distance on bottom cross beam, Bridge Erector complete machine drop arm 1.780m makes 3# pillar height degree 6.320m, and utilization CAD mould
Quasi- confirmation can complete safely feeding beam operation (see figure 3), therefore carry out inverse with this, after inverted arch fill surface absolute altitude lowers 0.352 m
Datum level can satisfy beam car delivery Bridge Erector by tunnel, also can satisfy safety fortune beam, feeding beam operation.
After arm 1.780m drops in Bridge Erector complete machine, height of the 3# column in tunnel is 6.320m, Bridge Erector heart line in the line
Position can complete feeding beam, longitudinal shifting beam, fall beam construction operation, but 3# column and generating set are by tunnel cross section widths affect
(being only capable of transverse shifting 0.200m) cannot complete laterally to move Liang Zuoye (laterally moving beam 1.100m).
As shown in Fig. 1, the present invention has developed a set of pier top thus laterally auxiliary moves beam equipment: parallel including 2
P50kg/m rail (track)；Along its length, track is pressed from both sides by the first track and the second track of 3.000m of 2.200m by fish tail
Plate is coupled, and the middle line that seam is located at tunnel is biased to the second rail side 0.600m；The spacing of first track adjustment apertures is 0.550m,
The spacing of second track adjustment apertures is 0.500m；
One group of channel steel of left-hand thread on track, beam bottom support base is vertical to be anchored between channel steel；The back seat of jack passes through connection
Deck is fixed through adjustment hole and track, and movable end abuts beam bottom support base, which is used to support beam piece, oil pump thousand
Jin top provides power.
Calculated based on above, specifically set a roof beam in place operation when, construction method has following steps:
S1, tunnel inverted arch construction elevation are designed elevation or less 0.352m, and tunnel two sides ditch cable trench wouldn't construct；
TJ180 Bridge Erector complete machine drop arm 1.780m, 2# column is supported on abutment position, and 3# column and generating set can meet in tunnel
Beam car gives Bridge Erector feeding beam；
In the auxiliary shifting beam equipment that 0# platform, 1# pier top are horizontally mounted, the contact surface of shifting equipment and beam bottom is slightly above pinner
0.020 m of face.
S2, the first beam piece are slowly fallen on beam to beam bottom support base by Bridge Erector bale handle from midline position, in freely-supported flange of beam
Brace is accomplished fluently on plate and channel steel, prevents beam piece from toppling；Beam piece both ends are in chiasma type horizontally beam piece with double jacks simultaneously
It is fixed on the pre-buried steel construction of pier；
After beam piece fixing measure is carried out, jack is installed in beam piece both ends, connects oil pump, jack kick end passes through
It is coupled deck and is fixed on the leftmost adjustment hole of the first track, jack movable end is directed at beam bottom support base, and is allowed to holding force.
After slowly opening oil pump, jack is in pushing tow, the also simultaneously operating of beam piece both ends jack, pulling force and the traversing direction of beam
Opposite jack wants Synchronous Radio, and the identical jack of pulling force and the traversing direction of beam wants synchronous.During passage, observe in real time
The travel synchronization of jack and the stability of beam piece.
When jack stroke reaches 0.600m, stops pushing tow, be all inserted into beam piece both ends track and channel steel contact surface two sides
Stow-wood, while good all jacks are fastened, prevent beam piece from toppling.Oil pump is closed, the operation of first time pushing tow is completed, first time pushing tow is made
The traversing amount of industry beam piece is 0.550m.
After jack oil return, the bolt for being coupled deck and the first track adjustment apertures is removed, is allowed to play second with the left side
Adjustment hole bolt makes jack carry out second of pushing tow operation, points for attention and operation with first time pushing tow operation, pushes up for the second time
Pushing away the traversing amount of operation beam piece is also 0.550m, and adding up traversing amount is 1.100m, and beam piece arrived design position at this time.
But in order to reserve the position Luo Liang, Yao Chaoyi beam 1.100m to the second beam piece.
Be coupled the 3rd from left to right, the 4th adjustment hole on deck and the first track by bolt, be respectively completed for the third time, the
The traversing amount of four pushing tow operations, every secondary beam piece is 0.550m, and the final traversing amount of beam piece is that 2.200m(is shown in Fig. 4).
The jack at beam piece both ends is removed, the one or both sides of beam piece are supported using torus wood to be consolidated, and checks again for beam
Whether the safety precautions of piece appropriate, in place, and the stability monitoring of reinforcing beam piece.
S3, beam car feed the second beam piece to Bridge Erector.After the preceding overhead traveling crane of Bridge Erector, rear overhead traveling crane longitudinally move beam in place, from middle line
Position Luo Liang falls within beam piece on the first track.
Pay special attention to, when failing two beam pieces, beam piece will stabilization must not be swung left and right, in order to avoid collision first beam (two panels
The safe distance of beam is only 0.100 m).After falling beam, brace is accomplished fluently at flange plate, carries out safety prevention measure, frame
Bridge machine bundle joist steel cord is loosened, but does not remove guard beam watt and wirerope.
Arm 1.650m, removal bracket line, in order to which 3# column and generating set complete complete machine in tunnel drop in Bridge Erector complete machine
It is traversing, so that second beam is laterally moved to design position.
Arm 1.650m drops in Bridge Erector, removes the first track after the height of the synchronous bale handle 0.100m of preceding overhead traveling crane, rear overhead traveling crane.It builds bridge
Machine complete machine traversing 0.500m to the left, traversing 0.600m, total 1.100m(traversing to the left are shown in Fig. 5 to large arm to the left again), the second beam piece
It is laterally moved to design position, completes to set up and carries out interim safety prevention measure, topple to prevent beam piece.
S5, in elapsing the first beam piece on the second track, abut its side end with the second beam piece；
After Bridge Erector completes second erection task, complete machine traversing 1.000 m, the traversing 1.200m of large arm to the right add up to
Traversing 2.200 m to the right；Meanwhile jack being installed in the right end that auxiliary moves beam equipment, jack kick end is by being coupled card
Seat and the second track right end play first adjustment hole bolt, and movable end is abutted with beam bottom support base, and further, movable end can be with
Beam bottom and the contact of beam bottom support base and holding force, the steel plate of one piece of 20cm*20cm*1cm of contact surface placement, make uniform force.
It opens oil pump, the operation of jack pushing tow and beam piece both ends jack Synchronous Radio and shrinks.Jack stroke reaches
When 0.600m, stop pushing tow, be all inserted into stow-wood in beam piece both ends track and channel steel contact surface two sides, at the same fasten it is good it is all fall
Chain prevents beam piece from toppling.
Oil pump is closed, the pushing tow operation that returns back to top for the first time is completed.The traversing amount of pushing tow operation beam piece that returns back to top for the first time is 0.600
m。
After jack oil return, the bolt for being coupled deck and the second track adjustment apertures is removed, is allowed to play second with the right
Adjustment hole bolt, makes jack be returned back to top for the second time pushing tow operation, when jack stroke reaches 0.500m, beam piece, which arrived, to be set
Position is counted, the pushing tow operation that returns back to top for the second time is completed, the traversing amount of beam piece is 0.500 m, and adding up traversing amount is that 1.100 m(are shown in Fig. 6).
After the completion of S6, first beam return operation, jack is removed, guard beam watt is placed and has tied beam piece, preceding overhead traveling crane, the day after tomorrow
After the height of synchronous 0.100 m of bale handle of vehicle, the auxiliary on dismounting pier, platform moves beam equipment, including the second track；Bridge Erector completion is fallen
First erection of beam operation completes (see figure 7).
S7, the lateral connection steel plate for welding the first beam piece and the second beam piece, pre-stressed steel plate is worn, Bridge Erector prepared
Hole completes tunnel face and sets a roof beam in place operation.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the above embodiments do not limit the invention in any form, all obtained by the way of equivalent substitution or equivalent transformation
Technical solution is fallen within the scope of protection of the present invention.
Claims (9)
1. being suitable for the erecting beam construction method under special space, which comprises the following steps:
S1, using the middle line in tunnel as line of symmetry, Bridge Erector after setting drop arm in tunnel is horizontal in arranging on the pier in tunnel
Track；
The track includes the first track and the second track of splicing, and seam is partial to the second rail side；
S2, Bridge Erector after midline is placed on track, elapse the first beam piece to the second rail side, and putting for the second beam piece
Set reserved width；
S3, Bridge Erector place the second beam piece in midline in orbit；
Arm drops in S4, Bridge Erector again, after Bridge Erector lifts the second beam piece, removes the first track, and by Bridge Erector by the second beam
Piece is moved to the first rail side, so that setting up the second beam piece after the inside side end alignment middle line of the second beam piece；
S5, in elapsing the first beam piece on the second track, abut its side end with the second beam piece；
S6, Bridge Erector lift the first beam piece, after removing the second track, set up the first beam piece；
S7, the first beam piece and the second beam piece are fixed, that is, completes operation of setting a roof beam in place.
2. the erecting beam construction method according to claim 1 suitable under special space, which is characterized in that the step S2
It further include fixing measure with S3,
A, when pier top moving beam piece: double jacks are used at beam piece both ends respectively, and beam piece is horizontally fixed on pier in chiasma type
On pre-buried steel construction；
For beam piece in passage, simultaneously operating jack: putting stretching force and beam piece elapses contrary jack, shrinkage tensions and beam piece
Elapse the identical jack in direction；
B, when standing: the one or both sides of beam piece are supported with torus wood.
3. the erecting beam construction method according to claim 1 suitable under special space, which is characterized in that the Bridge Erector
The second beam piece is moved, the complete machine including Bridge Erector is moved moves with large arm.
4. the erecting beam construction method according to claim 1 suitable under special space, which is characterized in that the step S2
The stress basis of middle passage is the first track；
The stress basis elapsed in the step S5 is the second track.
5. the auxiliary for being suitable for any erecting beam construction method of claim 1-4 moves beam equipment, which is characterized in that including
One group of side is equipped with the track of several adjustment holes,
The track is made up of the first track and the second track clamping plate connection；
One group of channel steel of left-hand thread on the track, beam bottom support base is vertical to be anchored between channel steel；
The back seat of jack is fixed by being coupled deck through adjustment hole and track, and movable end abuts beam bottom support base.
6. auxiliary according to claim 5 moves beam equipment, which is characterized in that the seam of first track and the second track
It is partial to the middle line in tunnel in position.
7. auxiliary according to claim 5 moves beam equipment, which is characterized in that the length of first track is greater than the second beam
The length that piece is moved；
The length of second track is greater than the sum of width and reserved width of the second beam piece of the first beam piece.
8. auxiliary according to claim 5 moves beam equipment, which is characterized in that the position of the first track adjustment apertures and
Spacing is determined according to the length that the stroke of jack and the first beam piece are elapsed to the second orbital direction；
The position of the second track adjustment apertures and spacing, according to the stroke of jack and first beam to the first orbital direction
The length of passage determines.
9. auxiliary according to claim 5 moves beam equipment, which is characterized in that the rail base is equipped with several support piers.
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| CN110886233A (en) * | 2019-12-17 | 2020-03-17 | 中交路桥建设有限公司 | Construction method for connecting T-shaped beam with bridge |
| CN113306457B (en) * | 2020-02-27 | 2022-12-13 | 北京机械设备研究所 | Overhead contact net stripping device for clearing space above railway carriage and clearing method |
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