CN108316152A - A kind of high pier capping beam construction mobile formwork and its construction technology - Google Patents
A kind of high pier capping beam construction mobile formwork and its construction technology Download PDFInfo
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- CN108316152A CN108316152A CN201810088508.XA CN201810088508A CN108316152A CN 108316152 A CN108316152 A CN 108316152A CN 201810088508 A CN201810088508 A CN 201810088508A CN 108316152 A CN108316152 A CN 108316152A
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- mould bases
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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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- Bridges Or Land Bridges (AREA)
Abstract
The present invention provides a kind of high pier capping beam construction mobile formwork, including basis, track, mould bases are mobile trolley used, support bracket, template system and security protection system.The present invention also provides a kind of high pier capping beam construction Construction Through Form on Traveler techniques, including：The first step：It is mobile trolley used that mould bases is installed；Second step：It is mobile trolley used to raise mould bases, lifting supporting steel pipe, Bailey beam and shuttering supporting；Third walks：It is executed after first Coping Construction and falls frame process；4th step：Attachment rail, mould bases move forward at next pier position；5th step：Then rail under decentering is mobile trolley used puts sand bucket and shaped steel support pad in the mobile trolley used underlay of mould bases, it is in place to complete mould bases.The present invention can realize the road normal pass in the case where constructing while not influencing bridge pier, and construction efficiency is high, and safety is good.
Description
Technical field
The present invention relates to high pier capping beams to move construction field, and in particular to a kind of high pier capping beam construction mobile formwork and its
Construction technology.
Background technology
High pier capping beam is primarily referred to as the crossbeam being located on higher pier stud, is mainly used on the pier stud of bridge and sky way,
High pier capping beam is by construction simple gate single swing arm type and Double door type.In Coping Construction in city, in order to not influence existing social vehicle
Normal pass, needs to set up holder on road, and traffic cannot block.Consider Coping Construction when holder scaffolding height compared with
Height, security risk are big, it is therefore desirable to study a kind of integrated mobile construction method.
Invention content
The main object of the present invention is：
1, a kind of for building high pier capping beam mobile formwork, the movement in constructing convenient for high pier capping beam is provided, and mould bases is firm,
Road public vehicles passage is not influenced；
2, a kind of mould bases Mobile Method for building high pier capping beam is provided, this method can realize the integrated mobile of high pier capping beam
Construction, construction method are safe and efficient.
To achieve the goals above, the present invention provides a kind of high pier capping beam construction mobile formwork, including basis, track,
Mould bases is mobile trolley used, support bracket, template system and security protection system.
The basis is the cast-in-place concrete block or precast concrete block that strength grade is not less than C30；The track setting
On the basis of；The mobile trolley used setting of mould bases is in orbit.
The support bracket be located at mould bases it is mobile trolley used on, be made of supporting steel pipe, it is horizontal to pass through steel pipe between supporting steel pipe
To connection, is reinforced and connected by channel steel bridging.
The template system includes main distribution beam, Bailey beam and bed die system.The main distribution beam includes that setting is supporting
Fagging on steel pipe, and the Three kinds of hors d'oeuvres I-shaped gooseneck that is disposed side by side on fagging.The Three kinds of hors d'oeuvres I-shaped gooseneck is equipped with gear
Block, the Bailey beam are arranged on Three kinds of hors d'oeuvres I-shaped gooseneck, wherein passing through fining twisted steel positioned at twice Bailey beam before and after pier stud
It is reinforced to drawing.The bed die system includes：Channel steel supertronic split heads, Two bors d's oeuveres channel steel distribution beam and it is laid on Two bors d's oeuveres channel steel distribution beam
On bottom plate.
The security protection system includes：Bracket, anti-fall platform and side shield；The bracket is located on mobile trolley used,
The anti-fall platform is located on bracket.
Further, the mobile trolley used bicycle beam section of the mould bases is the I-shaped of laterally Two bors d's oeuveres arranged side by side；Mould bases mobile station
Vehicle wheel is cast iron quality；Motor erecting bed is arranged in the mobile trolley used wheel face of mould bases, and motor is arranged on motor erecting bed and subtracts
Fast machine.
Further, the supporting steel pipe bottom opens up junction of the edges of two sheets of paper slot.
Further, the block is welded by trivet and steel plate.
The present invention also provides a kind of high pier capping beam construction Construction Through Form on Traveler methods, include the following steps：
The first step：When first Coping Construction, after foundation construction, installation mould bases is mobile trolley used；
Second step：It is mobile trolley used that mould bases is raised by sand bucket and shaped steel support pad, and lifts supporting steel pipe, Bailey beam and template branch
Support；
Third walks：After first Coping Construction, on bent cap top, setting drops frame system, cuts off steel pipe at the top of column and is applied to next
Work absolute altitude, execution fall frame process；
4th step：Fall after the completion of frame process, install rail track and using jack by the mobile trolley used decentralization of mould bases on track,
The Bailey beam segment outside the mobile formwork range of both sides and its top bed die system are removed, mobile trolley used side motor, mould are started
Frame is moved forward to by the way that mould bases is mobile trolley used at next pier position in orbit；
5th step：After mould bases moves to next pier position appointed place, promotion mould bases is mobile trolley used, the steel under decentering is mobile trolley used
Then rail is put in the mobile trolley used underlay of mould bases on sand bucket and shaped steel support pad, the Bailey beam segment of assembling and disassembling and its top bed die
It is in place to complete mould bases for system.
Further, the frame system that drops includes：The support of bent cap top shoulder pole girder, steel pipe column top door frame and to drop construction flat
Platform.Bent cap top shoulder pole girder supports：Shoulder pole girder, supporting leg, chain block, wherein supporting leg are arranged under shoulder pole girder, pull
Cucurbit is arranged in shoulder pole girder both sides；The steel pipe column top door frame is arranged in supporting steel tube top, including：Door frame supporting leg, door frame pull
Cucurbit, crossbeam, column and pin rod, crossbeam is arranged under the door frame supporting leg, and door frame supporting leg passes through steel pin and connects with mobile formwork
It connects, the door frame chain block is arranged on crossbeam, and the crossbeam is Two bors d's oeuveres channel steel, and notch is on the contrary, waist is welded；It is described
Dropping operation platform includes：Chassis chan frame and the scaffold board and guard rail being laid on bottom plate chan frame.
Further, the frame process that falls includes the following steps：
The first step, operation tightening drop the chain block on door frame and shoulder pole girder, and cutting column steel pipe drops steel to specified absolute altitude
Chain block on tubing string roof door frame and shoulder pole girder is respectively crossing Two bors d's oeuveres slot in 2 row's steel pipe top Bailey beams near pier stud
3 spelling I-steel of steel pipe column top at this are hung in by the way that steel wire rope is counter on the Two bors d's oeuveres channel steel crossed in Bailey beam by steel；
Second step transfers the chain block on shoulder pole girder, it is ensured that distribution beam, Bailey beam and bed die system synchronization fall frame, in automobile
The bed die system of the Bailey beam segment and its top outside the mobile formwork range of both sides is removed under the cooperation hung；
Third walks, and steel rail laying is integrally fallen on formwork system on rail using jack；
4th step starts the motor on mould bases trolley, mould bases Forward.
5th step, according to the designed elevation of new pier position, by left and right sides mould bases integral jacking, simultaneously support pad is secured in place, and installation is torn open
The Bailey beam segment removed and bed die system.
The beneficial effects of the invention are as follows：
1, mobile formwork of the invention can realize that the mobile construction of bent cap, mould bases stabilization have a safety feature；
2, the mould bases Mobile Method of the high pier capping beam of construction of the invention, can realize in construction while road is normal under not influencing bridge pier
It is current, and construction efficiency is high, is conducive to shorten the construction period.
Description of the drawings
Fig. 1 is a kind of mobile formwork structural schematic diagram for building high pier capping beam；
Fig. 2 is a kind of mobile formwork A-A sectional views for building high pier capping beam；
Fig. 3 is a kind of mobile formwork B-B sectional views for building high pier capping beam；
Fig. 4 is template system structural schematic diagram；
Fig. 5 is the mobile trolley used structural schematic diagram of mould bases；
Fig. 6 is stop block structure schematic diagram；
Fig. 7 is to drop frame system structure diagram.
In figure：1, basic；2, track；3, mould bases is mobile trolley used；4, support bracket；5, template system；6, security protection body
System；7, supporting steel pipe；8, steel pipe；9, channel steel bridging；10, main distribution beam；11, the outer Bailey beam of mobile formwork range；12, bed die
System；13, fagging；14, Three kinds of hors d'oeuvres I-shaped gooseneck；15, block；16, channel steel supertronic split heads；17, Two bors d's oeuveres channel steel distribution beam；18、
Bottom plate；19, bracket；20, anti-fall platform；21, side shield；22, bicycle beam；23, wheel；24, trivet；25, steel plate；26, it covers
Back shoulder pole girder supports；27, capital door frame；28, operation platform is dropped；29, shoulder pole girder；30, supporting leg；31, chain block；32、
Door frame supporting leg；33, door frame chain block；34, crossbeam；35, chassis chan frame；36, scaffold board；37, guard rail；38, it covers
Beam；39, frame system is dropped.
Specific implementation mode
In order to clearly illustrate the above objects, features and advantages of the present invention, below in conjunction with the accompanying drawings and it is embodied
The example technical solution that the present invention will be described in detail provides.Other than each embodiment described in this part, the present invention can also
Implemented by other different modes, those skilled in the art can be correspondingly improved, deform and replace, therefore the present invention
It is not limited by specific embodiment disclosed in the part.Protection scope of the present invention should be subject to claims.
As shown in Figure 1 to Figure 3, a kind of high pier capping beam construction mobile formwork, including basis 1, track 2, mould bases mobile station
Vehicle 3, support bracket 4, template system 5 and security protection system 6.
Described basic 1 is the precast concrete block of intensity C30.The use p43 rail of the track 2, weight 43kg/m, rail level are wide
70mm, the flange of rail wide 114mm, high 140mm, the long 12.5m of single-unit track, 3 ~ 4 section of input is converted when mould bases moves.The track
2 settings are on basis 1；The mould bases mobile trolley used 3 is arranged on track 2.
The support bracket 4 is located on mould bases mobile trolley used 3, is made of supporting steel pipe 7, passes through steel between supporting steel pipe 7
8 lateral connection of pipe is reinforced by channel steel bridging 9 and is connected.7 size of the supporting steel pipe is 630mm × 10mm.In supporting steel pipe
Junction of the edges of two sheets of paper slot is opened in 8 bottoms, notch high 40cm, wide to be slightly larger than 35cm, on mould bases mobile trolley used 3 welding [8 channel steel ribbed stiffeners, then
Welding is formed into whole support bracket 4 and packs into small trolley, full weld steel pipe and ribbed stiffener.The size of the steel pipe 8 is φ 245mm
× 6mm, [18a channel steels weld channel steel model used in channel steel bridging between steel pipe 8, channel steel bridging 9 and supporting steel pipe 7
10mm steel plates are as gusset plate.
As shown in Figure 2 and Figure 4, the template system 5 includes main distribution beam 10, the outer Bailey beam 11 of mobile formwork range and bottom
Modular system 12.The main distribution beam 10 includes the fagging being arranged on supporting steel pipe 7
And be disposed side by side on the Three kinds of hors d'oeuvres I-shaped gooseneck 14 on fagging 13, the size of light plate be 20mm × 700mm ×
700mm, Three kinds of hors d'oeuvres I-shaped gooseneck 14 are spliced using I45 I-steel.The Three kinds of hors d'oeuvres I-shaped gooseneck 14 is equipped with block 15,
The Bailey beam is arranged on Three kinds of hors d'oeuvres I-shaped gooseneck 14, wherein passing through fining twisted steel pair positioned at twice Bailey beam before and after pier stud
It draws and reinforces.[8 channel steels make open card, and single group Bailey beam is stuck on Three kinds of hors d'oeuvres I-shaped gooseneck 14 for utilization under the Bailey beam.Institute
Stating bed die system 12 includes：It channel steel supertronic split heads 16, Two bors d's oeuveres channel steel distribution beam 17 and is laid in Two bors d's oeuveres channel steel distribution beam 17
Bottom plate 18, the bottom plate 18 be 1.5cm thickness high-strength bamboo offset plates.
As shown in Fig. 2, the security protection system 6 includes：Bracket 19, anti-fall platform 20 and side shield 21；The support
Frame 19 is located on mobile trolley used, and the anti-fall platform 20 is located on bracket 19.Bracket 19 is supported on 245 steel pipes of Φ, 8 bottom
On bracket 19 is mobile trolley used, the anti-fall platform 20 of support, 5 meters away from road-space of 20 bottom surface of anti-fall platform, along bridge to length are welded in top
20 meters.Surrounding sets 8 railing of steel pipe by safety standard on platform, and detailed catalogue safety net and white anti-falling screen are hung in railing.In bracket 19
245 steel pipes 8 of Φ are by channel inside suspension 10mm wood glues plate and fixed thereto, and height is 1.2 meters of works by 20 bottom of anti-fall platform
For side shield 21.
Further, as shown in fig. 6, mobile trolley used 22 section of bicycle beam of the mould bases is lateral " work " word of Two bors d's oeuveres side by side
Shape, the wide 35cm in trolley top surface, high 40cm are about 10m.The mobile trolley used wheel 23 of mould bases is cast iron quality, diameter 50cm, wheel width
About 8cm is matched with track 2, and the rotation axis that 8cm diameters are arranged in each 23 side of bogie wheels is connected with motor installed base,
Motor installed base is by the way that [8 channel steel weld holders are reinforced.4KW motor and speed reducer driving wheel operating.
Further, as shown in fig. 7, the block 15 is welded by trivet 24 and steel plate 25.
The present invention also provides a kind of high pier capping beam construction Construction Through Form on Traveler techniques, include the following steps：
The first step：When first bent cap 38 is constructed, after 1 construction of basis, mould bases mobile trolley used 3 is installed；
Second step：Mould bases mobile trolley used 3 is raised by sand bucket and shaped steel support pad, and lifts Bailey beam 11 and bed die system；
Third walks：After first bent cap 38 is constructed, on bent cap top, setting drops frame system 39, cuts off steel pipe at the top of support post
To next construction elevation, execution falls frame process；
4th step：It falls after the completion of frame process, installation rail track 2 is simultaneously transferred mould bases mobile trolley used 3 to rail using jack
On track 2,11 segment of Bailey beam outside the mobile formwork range of both sides and its top bed die system are removed, mobile trolley used side is started
Motor, mould bases are moved forward at next pier position by mould bases mobile trolley used 3 on track 2；
5th step：After mould bases moves to next pier position appointed place, mould bases mobile trolley used 3 is promoted, is moved using jack decentering
Rail under dynamic trolley 3, then puts in mobile trolley used 3 underlay of mould bases on sand bucket and shaped steel support pad, and mould is moved in assembling and disassembling both sides
Outer 11 segment of Bailey beam of frame range and its top bed die system, it is in place to complete mould bases.
Further, as shown in fig. 7, the frame system 39 that drops includes：Bent cap top shoulder pole girder support 26, capital door frame 27
With drop operation platform 28.Bent cap top shoulder pole girder support 26 includes：Shoulder pole girder 29, supporting leg 30, chain block 31, it is described flat
Spreader beam 29 totally 3, by 2, [32a channel steels are welded.The supporting leg 30 is arranged under shoulder pole girder 29, the every setting of shoulder pole girder 29 2
Root φ 240 × 6mm steel pipes supporting leg 30.Chain block 31 is arranged in 29 both sides of shoulder pole girder.38 both ends shoulder pole girder 29 of bent cap is to drop
Main suspension centre, under hang 3I45a I-steel；Suspension centre supplemented by intermediate shoulder pole girder 29 [hangs Bailey beam 11 by crossing Two bors d's oeuveres under 18 channel steels.
1 set of door frame is arranged in 7 top of supporting steel pipe, every supporting steel pipe in the setting of capital door frame 27, and each bent cap is set
Set 8 sets, including：Door frame supporting leg 32, door frame chain block 33, crossbeam 34, the door frame supporting leg 32 be 2 [18 " " type columns,
Lower setting crossbeam 34, [18 channel steel notches are on the contrary, waist is welded the crossbeam 34 by two.The door frame supporting leg 32 passes through
2 25 pin rods of Φ are connect with mobile formwork, and the door frame chain block 33 is arranged on crossbeam 34, and 8 are arranged altogether.It is described to drop
Operation platform 28 includes：Chassis chan frame 35 and it is laid with scaffold board 36 thereon and guard rail 37.
Further, the frame process that falls includes the following steps：
The first step drops the chain block 31 on capital door frame 27 and shoulder pole girder 29, and Bailey beam is being pushed up close to steel pipe 8 near pier stud
On respectively cross Two bors d's oeuveres channel steel, the 3 of 8 capital of steel pipe at this spelling I-steel are hung in using steel wire rope is counter on Two bors d's oeuveres channel steel；
Second step transfers chain block 31, and when decentralization, 38 both ends shoulder pole girder 29 of bent cap is to drop main suspension centre, under hang 3I45a I-shapeds
Steel；Suspension centre supplemented by intermediate shoulder pole girder 29 [hangs Bailey beam, it is ensured that main distribution beam, Bailey beam and bottom by crossing Two bors d's oeuveres under 18 channel steels
Modular system, which synchronizes, falls frame；
Third walks, and is laid with track, is integrally fallen on formwork system on track using jack；
4th step removes 11 epimerite section of Bailey beam and its top bed die outside the mobile formwork range of both sides under the cooperation of truck crane
System starts the motor on mould bases trolley, mould bases Forward；
5th step, according to the designed elevation of new pier position, by left and right sides mould bases integral jacking, simultaneously support pad is secured in place, assembling and disassembling
Bailey beam segment and its top bed die system.
Claims (8)
1. a kind of high pier capping beam construction mobile formwork, which is characterized in that including basis, track, mould bases be mobile trolley used, load-bearing branch
Frame, template system and security protection system；
The basis is the cast-in-place concrete block or precast concrete block that strength grade is not less than C30；The track is arranged in base
On plinth；The mobile trolley used setting of mould bases is in orbit；
The support bracket be located at mould bases it is mobile trolley used on, be made of supporting steel pipe, connected by steel pipe transverse between supporting steel pipe
It connects, is reinforced and connected by channel steel bridging；
The template system includes main distribution beam, Bailey beam and bed die system；The main distribution beam includes being arranged in supporting steel pipe
On fagging, and the Three kinds of hors d'oeuvres I-shaped gooseneck that is disposed side by side on fagging；The Three kinds of hors d'oeuvres I-shaped gooseneck is equipped with block, institute
Bailey beam is stated to be arranged on Three kinds of hors d'oeuvres I-shaped gooseneck, wherein the twice Bailey beam before and after the pier stud by fining twisted steel to drawing
It reinforces；The bed die system includes：It channel steel supertronic split heads, Two bors d's oeuveres channel steel distribution beam and is laid in Two bors d's oeuveres channel steel distribution beam
Bottom plate；
The security protection system includes：Bracket, anti-fall platform and side shield；The bracket is located on mobile trolley used, described
Anti-fall platform is located on bracket.
2. a kind of high pier capping beam construction mobile formwork as described in claim 1, which is characterized in that the mould bases is mobile trolley used
Bicycle beam section is the I-shaped of laterally Two bors d's oeuveres arranged side by side；The mobile trolley used wheel of mould bases is cast iron quality；The mobile trolley used wheel of mould bases
Motor erecting bed is arranged in side, and motor and speed reducer is arranged on motor erecting bed.
3. a kind of high pier capping beam construction mobile formwork as described in claim 1, which is characterized in that the supporting steel pipe bottom
Open up junction of the edges of two sheets of paper slot.
4. a kind of high pier capping beam construction mobile formwork as described in claim 1, which is characterized in that the block is by trivet
It is welded with steel plate.
5. a kind of high pier capping beam construction Construction Through Form on Traveler technique, which is characterized in that include the following steps：
The first step：When first Coping Construction, after foundation construction, installation mould bases is mobile trolley used；
Second step：It is mobile trolley used that mould bases is raised by sand bucket and shaped steel support pad, and lifts supporting steel pipe, Bailey beam and template branch
Support；
Third walks：After first Coping Construction, on bent cap top, setting drops frame system, cuts off support post top steel pipe under
One construction elevation, execution fall frame process；
4th step：Fall after the completion of frame process, install rail track and using jack by the mobile trolley used decentralization of mould bases on track,
The Bailey beam segment outside the mobile formwork range of both sides and its top bed die system are removed, mobile trolley used side motor, mould are started
Frame is moved forward to by the way that mould bases is mobile trolley used at next pier position in orbit；
5th step：After mould bases moves to next pier position appointed place, promotion mould bases is mobile trolley used, the steel under decentering is mobile trolley used
Then rail is put in the mobile trolley used underlay of mould bases on sand bucket and shaped steel support pad, the Bailey beam section outside the mobile formwork range of both sides is lifted
It is in place to complete mould bases for section and its top bed die system.
6. a kind of high pier capping beam construction Construction Through Form on Traveler technique as claimed in claim 5, which is characterized in that described to drop
Frame system includes：The support of bent cap top shoulder pole girder, capital door frame and drop operation platform；
Bent cap top shoulder pole girder supports：Shoulder pole girder, supporting leg, chain block, wherein supporting leg are arranged under shoulder pole girder, pull
Cucurbit is arranged in shoulder pole girder both sides；The steel pipe column top door frame is arranged in supporting steel tube top, including：Door frame supporting leg, door frame pull
Cucurbit, crossbeam, column and pin rod, crossbeam is arranged under the door frame supporting leg, and door frame supporting leg passes through steel pin and connects with mobile formwork
It connects, the door frame chain block is arranged on crossbeam, and the crossbeam is Two bors d's oeuveres channel steel；The operation platform that drops includes：Chassis
Chan frame and the scaffold board and guard rail being laid on bottom plate chan frame.
7. a kind of high pier capping beam construction Construction Through Form on Traveler technique as claimed in claim 6, which is characterized in that the crossbeam
For Two bors d's oeuveres channel steel, notch is on the contrary, waist is welded.
8. a kind of high pier capping beam construction Construction Through Form on Traveler technique as claimed in claim 5, which is characterized in that described to fall frame
Process includes the following steps：
The first step, operation tightening drop the chain block on door frame and shoulder pole girder, and cutting supporting steel pipe is to specified absolute altitude, close
Two bors d's oeuveres channel steel is respectively crossed in two rows of supporting steel tube top Bailey beams near pier stud, the Three kinds of hors d'oeuvres I-steel of steel pipe column top at this is passed through
Steel wire rope is counter to be hung on the Two bors d's oeuveres channel steel crossed in Bailey beam；
Second step transfers the chain block on shoulder pole girder, it is ensured that distribution beam, Bailey beam and bed die system synchronization fall frame；
Third walks, and formwork system is integrally fallen on rail using jack, two are removed under the cooperation of truck crane by steel rail laying
Bailey beam segment outside the mobile formwork range of side and its top bed die system；
4th step starts the motor on mould bases trolley, mould bases Forward；
5th step, according to the designed elevation of new pier position, by left and right sides mould bases integral jacking, simultaneously support pad is secured in place, assembling and disassembling
Bailey beam segment and bed die system.
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|---|---|---|---|
| CN201810088508.XA CN108316152A (en) | 2018-01-30 | 2018-01-30 | A kind of high pier capping beam construction mobile formwork and its construction technology |
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| CN201810088508.XA CN108316152A (en) | 2018-01-30 | 2018-01-30 | A kind of high pier capping beam construction mobile formwork and its construction technology |
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| CN109356031A (en) * | 2018-11-19 | 2019-02-19 | 北京城建道桥建设集团有限公司 | Rail transit elevated bridge face, which is given another the right of way, transports Liangping platform and its method |
| CN109944165A (en) * | 2019-04-24 | 2019-06-28 | 中铁二十四局集团有限公司 | A kind of temporary support method of the modularization regulating posture for the installation of prefabricated bent cap |
| CN110184926A (en) * | 2019-05-14 | 2019-08-30 | 宁波市政工程建设集团股份有限公司 | A kind of public affairs rail is built together the overhead pier stud construction method of double-layer integrallyization |
| CN110485264A (en) * | 2019-08-21 | 2019-11-22 | 保利长大工程有限公司 | A kind of center pier great cantilever bent cap and its construction method |
| CN110847045A (en) * | 2019-11-20 | 2020-02-28 | 成都建工路桥建设有限公司 | Large-spread-arm bent cap self-propelled portal template system for urban viaduct and construction method |
| CN113089491A (en) * | 2021-04-09 | 2021-07-09 | 中铁九局集团第七工程有限公司 | Construction method of large cantilever prestressed concrete bent cap |
| CN114457708A (en) * | 2022-02-23 | 2022-05-10 | 浙江交工金筑交通建设有限公司 | Construction method for removing bracket system of widened overpass group of highway |
| CN115418966A (en) * | 2022-09-28 | 2022-12-02 | 中国水利水电第八工程局有限公司 | Aqueduct cast-in-place supporting method |
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