CN108708264A - A kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete - Google Patents
A kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete Download PDFInfo
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- CN108708264A CN108708264A CN201810519505.7A CN201810519505A CN108708264A CN 108708264 A CN108708264 A CN 108708264A CN 201810519505 A CN201810519505 A CN 201810519505A CN 108708264 A CN108708264 A CN 108708264A
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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
- E01D4/00—Arch-type 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
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Abstract
The present invention provides a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, belongs to Long-Span Concrete Filled Steel Tubular Arch Bridges technical field of construction.Main arch rib carries out pipe inner concrete pouring construction by the way of being classified endless relay；Wherein, pipe inner concrete perfusion uses jack-block, according to symmetrically with load balance principle, with vault for symmetrical center line, bridge two halves are across symmetrical concrete perfusion；The present invention provides a kind of multi-stage construction methods of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, this construction method constructs to main arch fin steel tube by the way of series classification relay concrete perfusion, securely and reliably, energy saving, greatly reduce plugging risk.
Description
【Technical field】
The present invention relates to large-span concrete arch bridges construction field, especially a kind of Long-Span Concrete Filled Steel Tubular Arch Bridges
The multi-stage construction method of filling concrete.
【Technical background】
The perfusion of pipe inner concrete is one of crucial process of CFST Arch Bridge Construction, and filling concrete is constructed usually
By conditionalities such as arch bridge height, concrete quality, equipment performances.Pipe inner concrete pouring construction mostly uses jack-block, closely
Vacuum auxiliary pouring method has been invented over year, has in addition to this had no technologic great innovation.With the development of economy and technology, steel
The span and height of pipe concrete arch bridge are increasing, and the construction of pipe inner concrete is increasingly difficult to.Currently, CFST Arch Bridge
Span has reached 530m, and rise reaches 110m, and single string pipe concrete reaches 1000m3.As this span is big, height is big, single fills
Note side measures big steel pipe arch bridge and constructs according to the method for being once filled into top, plugging dangerous.Once there are the feelings such as plugging
Condition certainly will seriously affect the quality of concrete in pipe, bring subsequent processing problem.
Therefore, the new side that a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete is development is studied
To.
【Invention content】
In view of posed problems above, the present invention provides a kind of points of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete
Grade construction method, this construction method uses stagewise endless relay concrete perfusion, securely and reliably, energy saving, can also be big
It is big to reduce plugging risk.
Technical scheme is as follows：
A kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, adopts main arch ribbed pipe inner concrete
It is irrigated construction with the mode of series classification relay；Wherein, the method for filling of the pipe inner concrete uses jack-block, according to
Symmetrically with balance loading principle, with vault for symmetrical center line, bridge two halves are across concrete perfusion simultaneously.It is main in pumping procedure
The two halves of arch rib pipe are less than 6m across the progress difference that pours of inner concrete3。
Further, 60m is more than for arch rib rise or the CFST Arch Bridge that duration is more than 8h is perfused, using classification
Construction method.
Further, every level-one after being classified to the main arch rib is equipped with a stock inlet and a thick liquid discharge mouth；Wherein,
The first order stock inlet is set near the arch springing of arch bridge, and afterbody thick liquid discharge mouth is set to vault；(n+1)th grade of stock inlet can be used as
N-th grade of thick liquid discharge mouth, n >=1.
Further, the main arch rib unilateral side filling concrete work progress includes the following steps：
S1：Main arch rib rinses：Water is injected into arch rib steel pipe from vault discharge pipe, cleans steel pipe inner wall, and by being opened in
The mud hole discharge iron rust of main arch rib tubular arch underfooting edge and other sundries, stop note after flow is limpid and no-sundries exclude
Water closes mud hole after the water in main arch ribbed pipe all discharge by electric welding；
S2：First order Concrete Pumping Construction：After carrying out profit pipe operation to concrete pump pipe, by pump machine and level-one inlet pipe
Connection, concrete is pumped into main arch ribbed pipe；When concrete pumping to level-one grout outlet position, the discharge of level-one grout outlet is opened
Laitance；After laitance is drained, pause level-one pumping；
S3：Second level Concrete Pumping Construction：After level-one concrete laitance drains, starts two level and pump program；To two
After grade pump line carries out profit pipe, it is pumped into concrete, after pump line stablizes discharge concrete, two level stock inlet is accessed, into arch rib pipe
It is pumped into concrete；The first order continues pump concrete, until pipe inner concrete boundary face is more than two level inlet pipe 3~5m height
When, stop level-one pump machine, closes level-one plasma discharge tube valve；Continue pump concrete, concrete pumping to two level pulp in the second level
When pipe position, opens two level discharge pipe and laitance is discharged；After laitance is drained, pause two level pumping；
S4：N-th grade of Concrete Pumping Construction：Step S3 is repeated, the pumping construction of the concrete of corresponding stage is completed；
S5：Vault plasma discharge operates：Upward relay pumping concrete step by step repeat the above steps until vault is pumped to, when mixed
After solidifying soil is pumped to vault, slow down rate of pumping, continues pump concrete, wait for that laitance drains, and in one continuous time
When the good concrete of interior stable discharge character, pause pumping；After standing 5~10min, it is further continued for pumping 5~10min coagulations
Soil；Above-mentioned plasma discharge operation is repeated until discharge pipe bubble-free is overflowed, and significant change does not occur and can stop for concrete character
Only pump concrete closes final stage inlet pipe valve, completes the pouring construction of unilateral main arch ribbed pipe.
Further, the concrete uses the high performance concrete with self-compaction and shrinkage-compensating function, wherein mixed
The expansion degree for coagulating soil reaches 600mm or more, and the presetting period is more than 1.5 times of single-stage construction times.
The present invention has the following advantages that compared with prior art：
1. to main arch fin steel tube, to be pumped method from arch springing to vault, main arch rib is perfused in a manner of endless relay to be classified in the present invention
Pipe inner concrete significantly reduces long-span arch bridge the pumping pressure of concrete, greatly reduces and blocks wind in generator tube
Danger.
2. it is long and lead to avoid the single construction time using classification endless relay pouring construction for main arch ribbed pipe inner concrete
The concrete flowability of cause is lost, and is reduced the sensibility that pouring construction requires working performance of concrete, is substantially reduced mixed
Solidifying soil regulation and control difficulty.
In short, the present invention provides a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, this
Kind construction method is irrigated main arch rib using classification endless relay concrete perfusion mode, and safe operation saves energy consumption, greatly
It is big to reduce construction cost, effectively reduce plugging risk.
【Specific implementation mode】
The following examples can help those skilled in the art that the present invention is more completely understood, but cannot be with any
Mode limits the present invention.
Prepare before construction：The every quality detection work for completing tubular arch in CFST Arch Bridge passes through the inspection at scene
Arch rib axis and verification absolute altitude are surveyed, grading design is completed；Then each grade of arch rib is carried out opening up stock inlet, thick liquid discharge mouth etc., and
Classification welding inlet pipe, discharge pipe, complete the installation of each nozzle valve.
Embodiment 1
A kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, adopts main arch ribbed pipe inner concrete
It is irrigated construction with the mode of series classification relay；Wherein, the method for filling of the pipe inner concrete uses jack-block, according to
Symmetrically with balance loading principle, with vault for symmetrical center line, bridge two halves are across concrete perfusion simultaneously.It is main in pumping procedure
The two halves of arch rib pipe are less than 6m across the progress difference that pours of inner concrete3.Wherein, in the multi-stage construction, classification perfusion length root
It is determined according to diameter of steel tube, height, concrete performance and the pump power in concrete engineering；The concrete, which uses, to be had certainly
The closely knit high performance concrete with shrinkage-compensating function, wherein：Concrete expansion degree should reach 600mm or more, and Slow setting time is answered
More than 1.5 times single-stage construction times.
Every level-one after being classified to the main arch rib is equipped with a stock inlet and a thick liquid discharge mouth；Wherein, described first
Grade stock inlet is set near the arch springing of arch bridge, and afterbody thick liquid discharge mouth is set to vault；(n+1)th grade of stock inlet can be used as n-th grade of row
Starch mouth, n >=1.
Concrete perfusion process includes the following steps in half across the main arch ribbed pipe：
S1：Main arch rib rinses：Water is injected into arch rib steel pipe from vault discharge pipe, cleans steel pipe inner wall, and by being opened in
The mud hole discharge iron rust of main arch rib tubular arch underfooting edge and other sundries, stop note after flow is limpid and no-sundries exclude
Water closes mud hole after the water in main arch ribbed pipe all discharge by electric welding；
S2：First order Concrete Pumping Construction：After carrying out profit pipe operation to concrete pump pipe, by pump machine and level-one inlet pipe
Connection, concrete is pumped into main arch ribbed pipe；When concrete pumping to level-one grout outlet position, the discharge of level-one grout outlet is opened
Laitance；After laitance is drained, pause level-one pumping；
S3：Second level Concrete Pumping Construction：After level-one concrete laitance drains, starts two level and pump program；To two
After grade pump line carries out profit pipe, it is pumped into concrete, after pump line stablizes discharge concrete, two level stock inlet is accessed, into arch rib pipe
It is pumped into concrete；The first order continues pump concrete, until when pipe inner concrete boundary face is more than two level inlet pipe 3m height,
Stop level-one pump machine, closes level-one plasma discharge tube valve；Continue pump concrete, concrete pumping to two level grout outlet position in the second level
When setting, opens two level discharge pipe and laitance is discharged；After laitance is drained, pause two level pumping；
S4：Vault plasma discharge operates：Upward relay pumping concrete step by step repeat the above steps until vault is pumped to, when mixed
After solidifying soil is pumped to vault, slow down rate of pumping, continues pump concrete, wait for that laitance drains, and in one continuous time
When the good concrete of interior stable discharge character, pause pumping；After standing 5min, it is further continued for pumping 5min concrete；Repeatedly into
Row above-mentioned plasma discharge operation is until discharge pipe bubble-free is overflowed, and significant change does not occur for concrete character can stop pumped concrete
Soil closes final stage inlet pipe valve, completes the pouring construction of unilateral main arch ribbed pipe.
Work progress is smooth, and plugging does not occur, and the concrete character of discharge is good.To the concrete filled steel tube that finishes of construction at
Type quality carries out pipeline section ultrasound examination, and the average velocity of wave for surveying each section is 4710 ± 108m/s；Illustrate using this
The multi-stage construction method of invention can make steel pipe inner concrete homogeneous closely knit.
Embodiment 2
A kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, adopts main arch ribbed pipe inner concrete
It is irrigated construction with the mode of series classification relay；Wherein, the method for filling of the pipe inner concrete uses jack-block, according to
Symmetrically with balance loading principle, with vault for symmetrical center line, bridge two halves are across concrete perfusion simultaneously.It is main in pumping procedure
The two halves of arch rib pipe are less than 6m across the progress difference that pours of inner concrete3.Wherein, in the multi-stage construction, classification perfusion length root
It is determined according to diameter of steel tube, height, concrete performance and the pump power in concrete engineering；The concrete, which uses, to be had certainly
The closely knit high performance concrete with shrinkage-compensating function, wherein：Concrete expansion degree should reach 600mm or more, and Slow setting time is answered
More than 1.5 times single-stage construction times.
Every level-one after being classified to the main arch rib is equipped with a stock inlet and a thick liquid discharge mouth；Wherein, described first
Grade stock inlet is set near the arch springing of arch bridge, and afterbody thick liquid discharge mouth is set to vault；(n+1)th grade of stock inlet can be used as n-th grade of row
Starch mouth, n >=1.
Concrete perfusion process includes the following steps in half across the main arch ribbed pipe：
S1：Main arch rib rinses：Water is injected into arch rib steel pipe from vault discharge pipe, cleans steel pipe inner wall, and by being opened in
The mud hole discharge iron rust of main arch rib tubular arch underfooting edge and other sundries, stop note after flow is limpid and no-sundries exclude
Water closes mud hole after the water in main arch ribbed pipe all discharge by electric welding；
S2：First order Concrete Pumping Construction：After carrying out profit pipe operation to concrete pump pipe, by pump machine and level-one inlet pipe
Connection, concrete is pumped into main arch ribbed pipe；When concrete pumping to level-one grout outlet position, the discharge of level-one grout outlet is opened
Laitance；After laitance is drained, pause level-one pumping；
S3：Second level Concrete Pumping Construction：After level-one concrete laitance drains, starts two level and pump program；To two
After grade pump line carries out profit pipe, it is pumped into concrete, after pump line stablizes discharge concrete, two level stock inlet is accessed, into arch rib pipe
It is pumped into concrete；The first order continues pump concrete, until when pipe inner concrete boundary face is more than two level inlet pipe 5m height,
Stop level-one pump machine, closes level-one plasma discharge tube valve；Continue pump concrete, concrete pumping to two level grout outlet position in the second level
When setting, opens two level discharge pipe and laitance is discharged；After laitance is drained, pause two level pumping；
S4：Third level Concrete Pumping Construction：Step S3 is repeated, the pumping construction of the concrete of corresponding stage is completed；
S5：Vault plasma discharge operates：Upward relay pumping concrete step by step repeat the above steps until vault is pumped to, when mixed
After solidifying soil is pumped to vault, slow down rate of pumping, continues pump concrete, wait for that laitance drains, and in one continuous time
When the good concrete of interior stable discharge character, pause pumping；After standing 10min, it is further continued for pumping 10min concrete；Repeatedly
Above-mentioned plasma discharge operation is carried out until discharge pipe bubble-free is overflowed, and concrete character significant change does not occur can to stop pumping mixed
Solidifying soil, closes final stage inlet pipe valve, completes the pouring construction of unilateral main arch ribbed pipe.
Work progress is smooth, and plugging does not occur, and the concrete character of discharge is good.To the concrete filled steel tube that finishes of construction at
Type quality carries out pipeline section ultrasound examination, and the average velocity of wave for surveying each section is 4650 ± 112m/s；Illustrate using this
The multi-stage construction method of invention can make steel pipe inner concrete homogeneous closely knit.
Embodiment 3
A kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, adopts main arch ribbed pipe inner concrete
It is irrigated construction with the mode of series classification relay；Wherein, the method for filling of the pipe inner concrete uses jack-block, according to
Symmetrically with balance loading principle, with vault for symmetrical center line, bridge two halves are across concrete perfusion simultaneously.It is main in pumping procedure
The two halves of arch rib pipe are less than 6m across the progress difference that pours of inner concrete3.Wherein, in the multi-stage construction, classification perfusion length root
It is determined according to diameter of steel tube, height, concrete performance and the pump power in concrete engineering；The concrete, which uses, to be had certainly
The closely knit high performance concrete with shrinkage-compensating function, wherein：Concrete expansion degree should reach 600mm or more, and Slow setting time is answered
More than 1.5 times single-stage construction times.
Every level-one after being classified to the main arch rib is equipped with a stock inlet and a thick liquid discharge mouth；Wherein, described first
Grade stock inlet is set near the arch springing of arch bridge, and afterbody thick liquid discharge mouth is set to vault；(n+1)th grade of stock inlet can be used as n-th grade of row
Starch mouth, n >=1.
Concrete perfusion process includes the following steps in half across the main arch ribbed pipe：
S1：Main arch rib rinses：Water is injected into arch rib steel pipe from vault discharge pipe, cleans steel pipe inner wall, and by being opened in
The mud hole discharge iron rust of main arch rib tubular arch underfooting edge and other sundries, stop note after flow is limpid and no-sundries exclude
Water closes mud hole after the water in main arch ribbed pipe all discharge by electric welding；
S2：First order Concrete Pumping Construction：After carrying out profit pipe operation to concrete pump pipe, by pump machine and level-one inlet pipe
Connection, concrete is pumped into main arch ribbed pipe；When concrete pumping to level-one grout outlet position, the discharge of level-one grout outlet is opened
Laitance；After laitance is drained, pause level-one pumping；
S3：Second level Concrete Pumping Construction：After level-one concrete laitance drains, starts two level and pump program；To two
After grade pump line carries out profit pipe, it is pumped into concrete, after pump line stablizes discharge concrete, two level stock inlet is accessed, into arch rib pipe
It is pumped into concrete；The first order continues pump concrete, until when pipe inner concrete boundary face is more than two level inlet pipe 4m height,
Stop level-one pump machine, closes level-one plasma discharge tube valve；Continue pump concrete, concrete pumping to two level grout outlet position in the second level
When setting, opens two level discharge pipe and laitance is discharged；After laitance is drained, pause two level pumping；
S4：N-th grade of Concrete Pumping Construction：Step S3 is repeated, the pumping construction of the concrete of corresponding stage is completed；
S5：Vault plasma discharge operates：Upward relay pumping concrete step by step repeat the above steps until vault is pumped to, when mixed
After solidifying soil is pumped to vault, slow down rate of pumping, continues pump concrete, wait for that laitance drains, and in one continuous time
When the good concrete of interior stable discharge character, pause pumping；After standing 8min, it is further continued for pumping 8min concrete；Repeatedly into
Row above-mentioned plasma discharge operation is until discharge pipe bubble-free is overflowed, and significant change does not occur for concrete character can stop pumped concrete
Soil closes final stage inlet pipe valve, completes the pouring construction of unilateral main arch ribbed pipe.
Work progress is smooth, and plugging does not occur, and the concrete character of discharge is good.To the concrete filled steel tube that finishes of construction at
Type quality carries out pipeline section ultrasound examination, and the average velocity of wave for surveying each section is 4680 ± 110m/s；Illustrate using this
The multi-stage construction method of invention can make steel pipe inner concrete homogeneous closely knit.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (5)
1. a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete, which is characterized in that main arch ribbed pipe
Inner concrete is irrigated construction by the way of series classification relay；Wherein, the method for filling of the pipe inner concrete uses
Jack-block, according to symmetrically with balance loading principle, with vault for symmetrical center line, bridge two halves are across concrete perfusion simultaneously.
2. a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete according to claim 1, special
Sign is, is more than 60m for arch rib rise or the CFST Arch Bridge that duration is more than 8h is perfused, using multi-stage construction method.
3. a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete according to claim 1, special
Sign is that every level-one after being classified to the main arch rib is equipped with a stock inlet and a thick liquid discharge mouth；Wherein, the first order
Stock inlet is set near the arch springing of arch bridge, and afterbody thick liquid discharge mouth is set to vault；(n+1)th grade of stock inlet can be used as n-th grade of plasma discharge
Mouthful, n >=1.
4. a kind of multi-stage construction method of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete according to claim 1, special
Sign is that the main arch rib unilateral side filling concrete work progress includes the following steps：
S1：Main arch rib rinses：Water is injected into arch rib steel pipe from vault discharge pipe, cleans steel pipe inner wall, and by being opened in main arch
The mud hole discharge iron rust of fin steel tube arch springing lower edge and other sundries, stop water filling after flow is limpid and no-sundries exclude,
Mud hole is closed by electric welding after the water in main arch ribbed pipe all discharge；
S2：First order Concrete Pumping Construction：After carrying out profit pipe operation to concrete pump pipe, pump machine and level-one inlet pipe are connected
It connects, concrete is pumped into main arch ribbed pipe；When concrete pumping to level-one grout outlet position, it is floating to open the discharge of level-one grout outlet
Slurry；After laitance is drained, pause level-one pumping；
S3：Second level Concrete Pumping Construction：After level-one concrete laitance drains, starts two level and pump program；To two stage pump
After pipe carries out profit pipe, it is pumped into concrete, after pump line stablizes discharge concrete, two level stock inlet is accessed, is pumped into arch rib pipe
Concrete；The first order continues pump concrete, until when pipe inner concrete boundary face is more than two level inlet pipe 3~5m height,
Stop level-one pump machine, closes level-one plasma discharge tube valve；Continue pump concrete, concrete pumping to two level grout outlet position in the second level
When setting, opens two level discharge pipe and laitance is discharged；After laitance is drained, pause two level pumping；
S4：N-th grade of Concrete Pumping Construction：Step S3 is repeated, the pumping construction of the concrete of corresponding stage is completed；
S5：Vault plasma discharge operates：The upward relay pumping concrete step by step that repeats the above steps works as concrete up to being pumped to vault
After being pumped to vault, slow down rate of pumping, continue pump concrete, wait for that laitance drains, and is steady within one continuous time
Surely when the discharge good concrete of character, pause pumping；After standing 5~10min, it is further continued for pumping 5~10min concrete；Instead
Above-mentioned plasma discharge operation is carried out again until discharge pipe bubble-free is overflowed, and significant change does not occur and can stop pumping for concrete character
Concrete closes final stage inlet pipe valve, completes the pouring construction of unilateral main arch ribbed pipe.
5. according to a kind of multi-stage construction sides of Long-Span Concrete Filled Steel Tubular Arch Bridges filling concrete any one of claim 1-4
Method, which is characterized in that the concrete uses the high performance concrete with self-compaction and shrinkage-compensating function, wherein coagulation
The expansion degree of soil reaches 600mm or more, and the presetting period is more than 1.5 times of single-stage construction times.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577205A (en) * | 2018-11-28 | 2019-04-05 | 中铁十四局集团第工程发展有限公司 | A kind of 180m long-span Steel Arch casting method |
| CN110725212A (en) * | 2019-10-24 | 2020-01-24 | 广西路桥工程集团有限公司 | Method for determining target pile number and target elevation of steel pipe arch rib installation control point |
| CN111395174A (en) * | 2020-03-23 | 2020-07-10 | 广西路桥工程集团有限公司 | Method for exhausting air of arch rib in process of pouring concrete-filled steel tube of arch bridge |
| CN111979926A (en) * | 2020-09-16 | 2020-11-24 | 中铁二院工程集团有限责任公司 | Method for pouring concrete in pipe of long-span concrete-filled steel pipe arch bridge in plateau alpine region |
| CN113279333A (en) * | 2021-05-18 | 2021-08-20 | 中电建十一局工程有限公司 | Construction method for filling concrete in steel pipe arch bridge |
| CN113389142A (en) * | 2020-03-13 | 2021-09-14 | 中交路桥建设有限公司 | Continuous pumping jacking and linear control method for single-side arch rib of steel pipe concrete arch |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109577205A (en) * | 2018-11-28 | 2019-04-05 | 中铁十四局集团第工程发展有限公司 | A kind of 180m long-span Steel Arch casting method |
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| CN110725212B (en) * | 2019-10-24 | 2021-03-16 | 广西路桥工程集团有限公司 | Method for determining target pile number and target elevation of steel pipe arch rib installation control point |
| CN113389142A (en) * | 2020-03-13 | 2021-09-14 | 中交路桥建设有限公司 | Continuous pumping jacking and linear control method for single-side arch rib of steel pipe concrete arch |
| CN111395174A (en) * | 2020-03-23 | 2020-07-10 | 广西路桥工程集团有限公司 | Method for exhausting air of arch rib in process of pouring concrete-filled steel tube of arch bridge |
| CN111979926A (en) * | 2020-09-16 | 2020-11-24 | 中铁二院工程集团有限责任公司 | Method for pouring concrete in pipe of long-span concrete-filled steel pipe arch bridge in plateau alpine region |
| CN113279333A (en) * | 2021-05-18 | 2021-08-20 | 中电建十一局工程有限公司 | Construction method for filling concrete in steel pipe arch bridge |
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