CN109235285A - A kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system and construction method - Google Patents
A kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system and construction method Download PDFInfo
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- CN109235285A CN109235285A CN201811109981.8A CN201811109981A CN109235285A CN 109235285 A CN109235285 A CN 109235285A CN 201811109981 A CN201811109981 A CN 201811109981A CN 109235285 A CN109235285 A CN 109235285A
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- 238000010276 construction Methods 0.000 title claims abstract description 76
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 35
- 239000004567 concrete Substances 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 230000002787 reinforcement Effects 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 230000032258 transport Effects 0.000 claims abstract description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 17
- 238000009415 formwork Methods 0.000 claims description 15
- 230000009194 climbing Effects 0.000 claims description 14
- 238000004873 anchoring Methods 0.000 claims description 12
- 239000011513 prestressed concrete Substances 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 4
- 238000012876 topography Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 101150097977 arch-1 gene Proteins 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
- E01D21/10—Cantilevered erection
Abstract
The invention discloses a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring systems, it is characterized in that, including means for mounting coupling parts, face engineering structure, the combination of auxiliary tower crane and knotted rope structure greatly, the means for mounting coupling parts includes that main arch skewback basic (1), access bridge abutment (2) and abutment pier are basic (3), described to face engineering structure greatly and include dorsal funciculus anchor ingot (4), bracket (6) and buckle tower (15)；The knotted rope structure includes interim knotted rope (11) and dorsal funciculus (12)；The auxiliary tower crane combination includes the first tower crane (5) and the second tower crane (17), the auxiliary tower crane combines mutual relay and transports each segment steel reinforcement cage (9) in place, under the site condition that can not set up falsework, the technical problem for building LONG-SPAN RAILWAY concrete arch-type bridge is efficiently solved.The present invention also provides a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction methods, considerably increase construction efficiency compared with traditional construction method, and save cable and part earth anchor expense.
Description
Technical field
The invention belongs to railroad bridge field of engineering technology, more particularly, to a kind of LONG-SPAN RAILWAY armored concrete
Arch bridge cantilever pouring system and construction method.
Background technique
China mountain area vast area, accounts for 2/3rds of national total area, the most mountain Gao Gushen of mountain railway, and landform is steep
High, complicated geology is had inconvenient traffic.To adapt to the technical requirements such as mountain area V-arrangement valley and railway route selection, LONG-SPAN RAILWAY concrete arch
Bridge continuously emerges.
Railway concrete arch bridge is built under the conditions of V-arrangement valley terrain mostly uses stiff skeleton construction method, stiff skeleton structure
Complexity is made, external wrapping concrete need to divide ring section pouring construction, and the high altitude operation time is long, and project cost is high, and construction has certain difficult
Degree, is not easy to guarantee to construction machinery and personnel's requirement with higher, construction quality.According to cable-hoisting construction method, need
It will first in precasting yard, by arch box, (rib encircles the upper prefabricated completion of other structures object, then ships it to cable with means of transports such as flatcars
Hoisting Position, by cable will be segmented prefabricated arch box (rib is hoisted to installation site, and one end is connect with segment has been installed,
The other end is fixed temporarily it using knotted rope, until closure section rib-hoisting, this method also need to pacify in addition to needing installing tache tower
The transporting equipments such as cable tower, cable saddle, wirerope and overhead traveling crane are filled, while multiple earth anchors need to be added to balance cord horizontal power, engineering
Cost is higher.
For existing V-arrangement valley LONG-SPAN RAILWAY reinforced concrete arch bridge, in construction, the required cost faced is high, constructs
The problems such as difficulty is big, expectation have a kind of reductions difficulty of construction, save cable expense and part earth anchor expense, shorten the construction period, saving
The arrangement and method for construction of cost.
This patent devises a kind of cantilever pouring construction party suitable for V-type valley LONG-SPAN RAILWAY reinforced concrete arch bridge
Method.This method saves cable expense and part earth anchor expense, and saving construction cost has huge economic benefit, faces that can not set up
When bracket site condition under, efficiently solve build LONG-SPAN RAILWAY concrete arch-type bridge technical problem, while save
Duration and cost.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of LONG-SPAN RAILWAY reinforced concrete arch
Bridge cantilever pouring system, including means for mounting coupling parts, face engineering structure, the combination of auxiliary tower crane and knotted rope structure greatly, using interim button
Rope and dorsal funciculus anchoring cantilever are used to adjust arch ring elevation, while setting auxiliary tower crane on arch, using two mutual relays of tower crane, use
In place in transporting the steel reinforcement cage of factory's sectional making, more traditional stiff skeleton construction method shortens the construction period about 1/4, considerably increases
The construction efficiency of V-type valley LONG-SPAN RAILWAY reinforced concrete arch bridge, and cable expense and part earth anchor expense are saved, have huge
Big economic benefit.Under the site condition that can not set up falsework, efficiently solves and build LONG-SPAN RAILWAY concrete
The technical problem of arch bridge, has been saved duration and cost, while the system is adjustable into bridge structural linetype and internal force.
To achieve the above object, according to one aspect of the present invention, a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge is provided
Cantilever pouring system, including means for mounting coupling parts, face greatly engineering structure, auxiliary tower crane combination and knotted rope structure, wherein
The means for mounting coupling parts includes that the main arch is arranged in main arch skewback basis, access bridge abutment and abutment pier basis, descending side
Skewback basis；The access bridge abutment and abutment pier basis is respectively set in uphill side；
Described to face engineering structure include that dorsal funciculus anchor ingot, bracket and tower are buckled greatly, is set respectively in the middle part of slope according to the feature of topography
The dorsal funciculus anchor ingot is set, the bracket is close to the setting of main arch skewback basis vertical plane；The tower button is set to the main arch
The top of rigid No. 0 block of structure of T shape on the basis of skewback；
The knotted rope structure includes interim knotted rope and dorsal funciculus；
The auxiliary tower crane combination includes the first tower crane and the second tower crane, and first tower crane is set to the main arch skewback
The top on basis, second tower crane, which is located on cantilever, to be arranged on spandrel column pedestal, and the auxiliary tower crane combines mutual relay
It is in place to transport each segment steel reinforcement cage.
Further, T shape rigid frame bridge pier is also set up on the basis of the main arch skewback, the interim knotted rope is arranged in top,
The interim knotted rope other end is anchored on the end of cantilever；The dorsal funciculus is arranged in its back side, and described dorsal funciculus one end is anchored at institute
It states on T shape rigid frame bridge pier, the other end is anchored on the dorsal funciculus anchor ingot；The rigid No. 0 block bracket of structure of T shape, the T shape is arranged in its top
T shape No. 0 block of rigid structure above No. 0 block bracket of rigid structure.
Further, the interim knotted rope is set on the button tower, the interim knotted rope other end is anchored in the end of cantilever
On head；The dorsal funciculus is arranged in the button tower back side, and the dorsal funciculus other end is anchored in the access bridge abutment and the abutment pier respectively
On the basis of.
Further, main arch skewback basis one side is horizontal plane, and another side is vertical plane, the main arch skewback basis
Horizontal surface portion is exposed and is in a horizontal plane；
Further, the pedestal lower end is fixed in slope, as the support of No. 1 segment of main arch, upper end be set as with
The bevel structure that No. 1 segment of the main arch matches；
Further, first tower crane lower end is temporarily fixed on the horizontal plane on main arch skewback basis, and upper end cantilever is stretched
It moves outside out and is provided with the drag-line for transporting the steel reinforcement cage.
It is another aspect of this invention to provide that providing a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction party
Method includes the following steps using the LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system；
S1: construct the main arch skewback basis, construction access bridge abutment and abutment pier basis；It carries out other and faces engineering construction greatly
Construction, including the dorsal funciculus anchor ingot, the first tower crane, bracket, and the construction T shape rigid frame bridge pier；It is cast-in-place on the bracket
No. 1 segment of the main arch, is accurately positioned its axis and absolute altitude；
S2: the arrangement of the interim knotted rope is carried out；
S3: with pouring the progress of arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing, described in further progress each group
The arrangement of interim knotted rope；
S4: the steel reinforcement cage is transported in first tower crane and the second tower crane mutual cooperation relay, and cantilever continues to pour main arch
Until closure section；
S5: the main arch ring of cantilever pouring removes the bracket, removes and encircles upper first tower crane and second tower crane,
It constructs the spandrel column；No. 0 block bracket of the rigid structure of the T shape, button tower, interim knotted rope and other construction bases are removed, is hanged
The arm construction rigid structure prestressed concrete beam of T shape；
S6: using the rigid structure prestressed concrete beam of the T shape and bracket trolley transport bracket is transported, it is flat to set up vault construction
Platform；
S7: after the completion of the vault operation platform is set up, cast-in-place girder；
S8: removing first tower crane and vault operation platform full-bridge construction is completed, and carries out main bridge sound and carries examination
It tests, combined test puts into effect.
Further, in S2, specifically comprise the following steps:
S21: it is in place that each segment steel reinforcement cage is transported using first tower crane, and is poured paragraph by paragraph using hanging basket formwork system of climbing
Arch ring concrete；
S22: often pouring one section of arch ring concrete, described interim knotted rope one end is anchored cantilever end, the other end is anchored at
On the T shape rigid frame bridge pier；
Described dorsal funciculus one end: while being anchored on the dorsal funciculus anchor ingot by S23, and the corresponding interim knotted rope of tensioning and
Dorsal funciculus adjusts arch ring elevation.
Further, in S3, specifically comprise the following steps:
S31: the T shape No. 0 block bracket of rigid structure, and the rigid structure 0 of construction T shape are installed at the top of the T shape rigid frame bridge pier
Number block, button of constructing at the top of it are taken；
S32: continuing to pour arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing, and often pours one section just using described interim
Knotted rope one end anchors cantilever end, and the other end is anchored at the button and costs；Dorsal funciculus one end anchoring is described to buckle tower, the other end point
It is not anchored on the basis of the access bridge abutment and abutment pier, the corresponding interim knotted rope of tensioning and dorsal funciculus adjust arch ring elevation；
S33: the construction spandrel column pedestal is respectively set in the cantilever on both sides, and sets up described second respectively in the position
Tower crane.
Further, in S4, specifically comprise the following steps:
S41: it is in place that steel reinforcement cage described in each segment is transported using first tower crane and the second tower crane relay；
S42: using climbing, hanging basket formwork system pours arch ring concrete paragraph by paragraph, often pours a section concrete and is just faced using described
When knotted rope one end anchor cantilever end, the other end is anchored on the button tower, described dorsal funciculus one end anchor again it is described buckle tower, it is another
End is anchored at respectively on the basis of the access bridge abutment and abutment pier, and the corresponding interim knotted rope of tensioning and dorsal funciculus adjust arch ring
Elevation；
S43: it during cantilever pouring, often pours one section and is arranged apart from the identical spandrel column pedestal (16), directly
To the cantilever pouring of two sides to closure section；
S44: closing construction is carried out after adjustment arch rib axis to design altitude and lateral fiducial line position.
(1) LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system of the invention, including means for mounting coupling parts, big casual labourer's journey
Structure, the combination of auxiliary tower crane and knotted rope structure, using interim knotted rope and dorsal funciculus anchoring cantilever for adjusting arch ring elevation, together
When arch on set auxiliary tower crane, it is in place for transporting the steel reinforcement cage of factory's sectional making using two mutual relays of tower crane, relatively pass
System stiff skeleton construction method shortens the construction period about 1/4, considerably increases the construction of V-type valley LONG-SPAN RAILWAY reinforced concrete arch bridge
Efficiency, and cable expense and part earth anchor expense are saved, there is huge economic benefit.In the place that can not set up falsework
Under the conditions of, the technical problem for building LONG-SPAN RAILWAY concrete arch-type bridge is efficiently solved, has been saved duration and cost, simultaneously should
System is adjustable into bridge structural linetype and internal force.
(2) LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system of the invention, using two groups of knotted rope structures, wherein
One end of one group of interim knotted rope is anchored at T shape rigid frame bridge pier, and the other end is anchored on the end of cantilever, and dorsal funciculus one end is anchored at T
On shape rigid frame bridge pier, the other end is anchored on dorsal funciculus anchor ingot；Another group of knotted rope structure, interim knotted rope one end anchor cantilever end,
The other end is anchored on button tower, and tower is buckled in the anchoring of dorsal funciculus one end, and the other end is anchored at respectively on the basis of access bridge abutment and abutment pier, accordingly
Interim knotted rope and dorsal funciculus tensioning for adjusting arch ring elevation, the accuracy that makes to construct is higher.
(3) LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system of the invention, cast-in-place main arch 1 section on bracket
Section has accurate axis and absolute altitude, and No. 1 segment Striking symmetry of the main arch of two sides, ensure that accuracy when cantilever pouring,
It lays the foundation for subsequent pour, improves the safety of whole bridge.
(4) LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction method of the invention, builds builder's road first,
Side slope is protected, in place using the first tower crane and each segment steel reinforcement cage of the second tower crane cooperation transport, using the Hanging Basket mould that climbs
Plate system pours arch ring concrete paragraph by paragraph, with the progress of cantilever pouring, be constantly arranged interim knotted rope and dorsal funciculus to cantilever end into
Row anchoring, adjusts arch ring elevation.This method pours arch ring using stayed-buckle cable is segmented, and auxiliary tower crane construction, benefit are set on arch
Enter mould with tower crane integral hoisting, big subsection cast-in-situ technique reduces that high altitude operation time cost is cheap, and difficulty of construction is low, expands
The span ability of the pure reinforced concrete arch bridge of railway, new selection space is provided for mountain railway Bridge Design.
Detailed description of the invention
Fig. 1 be the present embodiments relate to means for mounting coupling parts schematic diagram；
Fig. 2 be the present embodiments relate to interim knotted rope layout drawing one；
Fig. 3 be the present embodiments relate to interim knotted rope layout drawing two；
Fig. 4 be the present embodiments relate to tower crane arrange in pairs or groups working drawing；
Fig. 5 be the present embodiments relate to closure section schematic diagram；
Fig. 6 be the present embodiments relate to set up spandrel column schematic diagram；
Fig. 7 be the present embodiments relate to set up vault operation platform schematic diagram；
Fig. 8 be the present embodiments relate to set up girder schematic diagram；
Fig. 9 be the present embodiments relate to construction complete figure.
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: 1- main arch skewback basis,
2- access bridge abutment, 3- abutment pier basis, 4- dorsal funciculus anchor ingot, the first tower crane of 5-, 6- bracket, No. 1 segment of 7- main arch, 8-T shape rigid frame bridge
Pier, 9- steel reinforcement cage, 10- climb the rigid structure of the interim knotted rope of hanging basket formwork system, 11-, 12- dorsal funciculus, 13-T shape No. 0 block bracket, 14-T
No. 0 block of the rigid structure of shape, 15- detain tower, 16- spandrel column pedestal, the second tower crane of 17-, 18- spandrel column, the rigid structure prestressing force of 19-T shape
Beams of concrete, 20- transport bracket trolley, 21- vault operation platform, 22- girder.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 1 is a kind of build-in knot that LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system is related to of the embodiment of the present invention
Structure schematic diagram；As shown in Figure 1, means for mounting coupling parts includes: main arch skewback basis 1, access bridge abutment 2 and abutment pier basis 3.V-arrangement valley
The descending side setting one side of two sides is horizontal plane, and another side is the main arch skewback basis 1 of vertical plane, the main arch skewback basis of two sides
1 in a horizontal plane and all in embedment slope；Access bridge abutment 2, the uphill side of another side is arranged in uphill side on one side in V-arrangement canyonside
Abutment pier basis 3, access bridge abutment 2 and abutment pier basis 3 are set, should should do corresponding adjustment according to the feature of different topographies, it can not
Positioned at same level.It further include facing engineering structure greatly in Fig. 1, such as: dorsal funciculus anchor ingot 4, bracket 6.In in the slope of V-arrangement valley two sides
Dorsal funciculus anchor ingot 4 is respectively set according to the feature of topography in portion, the supporting point as dorsal funciculus.The vertical plane on main arch skewback basis 1 tightens
It is sticked and sets bracket 6, lower end is fixed in slope, and upper end is the bevel structure to match with No. 1 segment 7 of main arch, is used to support existing
No. 1 segment 7 of main arch that field pours.T shape rigid frame bridge pier 8, two sides main arch skewback basis are set on the horizontal plane on main arch skewback basis 1
1 top is respectively provided with the first tower crane 5, and lower end is fixed in slope, and upper end cantilever extends removable and is provided with drag-line use
In transport steel reinforcement cage.
Further, No. 1 segment 7 of main arch of cast in situs is equipped with above bracket 6, one end and main arch skewback basis are solid
It is fixed, and No. 1 segment 7 of the main arch of two sides needs Striking symmetry.
Further, means for mounting coupling parts of the present invention and other face the construction of engineering structure in accordance with the following steps greatly:
S1: construction two sides main arch skewback basis 1 arranges reasonable time construction access bridge abutment 2 and abutment pier basis 3；
S2: other big casual labourer's journey constructions, including dorsal funciculus anchor ingot 4, the first tower crane 5 and bracket 6 and construction T are carried out
Shape rigid frame bridge pier 8；
S3: No. 1 segment 7 of cast-in-place main arch on the frame 6 is accurately positioned its axis and absolute altitude.
Fig. 2 is a kind of interim button that LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system is related to of the embodiment of the present invention
Rope layout drawing one, as shown in Fig. 2, needing to be arranged the fixed cantilever pouring system of the present invention of interim knotted rope 11 with the construction of steel reinforcement cage
System, for 8 height of T shape rigid frame bridge pier close to the height of the first tower crane 5, one end of interim knotted rope 11 is anchored at T shape rigid frame bridge pier 8, separately
One end is anchored on the end of cantilever, and further, dorsal funciculus 12 is arranged in the back side of T shape rigid frame bridge pier 8, and one end is anchored at T shape
On rigid frame bridge pier 8, the other end is anchored on dorsal funciculus anchor ingot 4.The tensioning of interim knotted rope 11 and dorsal funciculus 12 is for adjusting arch ring height
Journey.
Further, the construction of the interim knotted rope 11 of the present invention is in accordance with the following steps:
S1: it is in place that each segment steel reinforcement cage 9 is transported using the first tower crane 5, and arch is poured using hanging basket formwork system of climbing paragraph by paragraph
Enclose concrete；
S2: often pouring one section of arch ring concrete, interim 11 one end of knotted rope is anchored cantilever end, the other end is anchored at T shape
On rigid frame bridge pier 8；12 one end of dorsal funciculus is anchored on dorsal funciculus anchor ingot 4 simultaneously, and tensioning interim knotted rope 11 and dorsal funciculus 12 accordingly,
Adjust arch ring elevation.
Fig. 3 is a kind of interim button that LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system is related to of the embodiment of the present invention
Rope layout drawing two, as shown in figure 3, the cantilever pouring system, the rigid No. 0 block bracket 13 of structure of setting T shape is used at the top of T shape rigid frame bridge pier 8
In holding T shape No. 0 block 14 of rigid structure being disposed above, the top of rigid No. 0 block 14 of structure of T shape is provided with button tower 15, interim knotted rope
11 one end is anchored on the end of cantilever, and the other end is anchored on button tower 15；12 one end of dorsal funciculus anchors and buckles on tower 15, another
End is anchored in respectively on access bridge abutment 2 and abutment pier basis 3.
Further, spandrel column pedestal 16 is set on cantilever, the pedestal as the second tower crane 17 that its upper top is arranged
Support.
Further, the construction of above structure is in accordance with the following steps:
S1: the rigid No. 0 block bracket 13 of structure of T shape, and T shape of constructing No. 0 block 14 of rigid structure, T shape are installed at the top of T shape rigid frame bridge pier 8
The top construction button of No. 0 block 15 of rigid structure takes 15；
S2: continuing to pour arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing, and often pours one section and just utilizes interim knotted rope
11 one end anchor cantilever end, and interim 11 other end of knotted rope is anchored on button tower 15, and tower 15, the other end are buckled in the anchoring of 12 one end of dorsal funciculus
It is anchored on access bridge abutment 2 and abutment pier basis 3 respectively, tensioning interim knotted rope 11 and dorsal funciculus 12 accordingly adjust arch ring elevation；
S3: the cantilever of two sides is symmetrically arranged construction spandrel column pedestal 16, and sets up the second tower respectively in the position
Hang 17.
Fig. 4 is that a kind of tower crane that LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system is related to of the embodiment of the present invention is taken
With working drawing, as shown in figure 4, the hoist cable on the first tower crane 5 is used to hang the steel reinforcement cage 9 of two sides near the second tower crane 17, the
Two tower cranes 17 are for continuing the steel reinforcement cage 9 on the first tower crane 5 to be transferred to cantilever pouring system position to be poured, two tower cranes
Mutual relay cooperation continues to pour arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing.Fig. 5 is that the embodiment of the present invention is a kind of big
The closure section schematic diagram that span railway reinforced concrete arch bridge cantilever pouring system is related to, as the mutual relay of two tower cranes is transported
Steel reinforcement cage 9, cantilever continue to pour main arch until closure section, wherein setting spandrel column pedestal 16 separated by a distance.
Above-mentioned two tower crane inter-working carries out in accordance with the following steps:
S1: it is in place that each segment steel reinforcement cage 9 is transported using the first tower crane 5 and 17 relay of the second tower crane；
S2: using climbing, hanging basket formwork system pours arch ring concrete paragraph by paragraph, often pours a section concrete and just utilizes interim button
11 one end of rope anchors cantilever end, and interim 11 other end of knotted rope is anchored on button tower 15, and tower 15 is buckled in the anchoring of 12 one end of dorsal funciculus, another
End is anchored at respectively on access bridge abutment 2 and abutment pier basis 3, and interim knotted rope 11 and dorsal funciculus 12, adjustment arch ring are high accordingly for tensioning
Journey；
S3: it during cantilever pouring, often pours one section and is arranged apart from identical spandrel column pedestal 16, until two sides
Cantilever pouring is to closure section；
S4: closing construction is carried out after adjustment arch rib axis to design altitude and lateral fiducial line position.
Fig. 6 sets up arch for what a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system of the embodiment of the present invention was related to
Upper pillar stand schematic diagram, as shown in fig. 6, the rigid structure prestressing force of T shape is arranged on T shape rigid frame bridge pier 8 in the case where removing jib system
Beams of concrete 19, each spandrel column pedestal 16 are equipped with the spandrel column 18 that upper surface is in the same horizontal position.
Further, spandrel column 18 is set up in accordance with the following steps:
S1: the main arch ring of cantilever pouring removes the bracket 6 of No. 1 segment 7 of main arch, removes and encircles upper first tower crane 5 and second
Tower crane 17, spandrel column 18 of constructing；
S2: the rigid No. 0 block bracket 13 of structure of T shape, button tower 15, interim knotted rope 11 and other construction bases, cantilever are removed and is applied
The rigid structure prestressed concrete beam 19 of work T shape；
Fig. 7 be the present embodiments relate to set up vault operation platform schematic diagram, as shown in fig. 7, the rigid structure prestressing force of T shape
19 one end of beams of concrete is poured respectively to access bridge abutment 2 and abutment pier basis 3, and the other end is poured to the spandrel column 18 of the extreme side
Place；Bracket trolley 20 is transported in setting on the rigid structure prestressed concrete beam 19 of T shape, and vault operation platform is arranged between spandrel column 18
21.Using the rigid structure prestressed concrete beam 19 of T shape and the transport bracket of bracket trolley 20 is transported, sets up vault operation platform 21.Fig. 8
For the present embodiments relate to set up girder schematic diagram, in conjunction with Fig. 8, after the completion of vault operation platform 21 is set up, cast-in-place girder
22, the upper surface of girder 22 need to be in same level with the rigid structure prestressed concrete beam 19 of T shape.
Fig. 9 be the present embodiments relate to construction complete figure, remove the first tower crane 5 and vault operation platform 21, entirely
Bridge construction is completed, and carries out main bridge dynamic and static load tests, combined test puts into effect.
In conclusion a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring method, follows the steps below and applies
Work:
S1: building builder's road, and side slope is protected, and two sides main arch skewback basis 1 of constructing arranges reasonable time construction
Access bridge abutment 2 and abutment pier basis 3；Carry out other big casual labourer's journey constructions, including dorsal funciculus anchor ingot 4, the first tower crane 5 and branch
Frame 6, T shape rigid frame bridge pier 8 of constructing；No. 1 segment 7 of cast-in-place main arch on the frame 6, is accurately positioned its axis and absolute altitude.
S2: it is in place that each segment steel reinforcement cage 9 is transported using the first tower crane 5, and arch is poured using hanging basket formwork system of climbing paragraph by paragraph
Enclose concrete；One section of arch ring concrete is often poured, interim 11 one end of knotted rope is anchored into cantilever end, it is rigid that the other end is anchored at T shape
On structure bridge pier 8；12 one end of dorsal funciculus is anchored on dorsal funciculus anchor ingot 4 simultaneously, and tensioning interim knotted rope 11 and dorsal funciculus 12 accordingly, is adjusted
Whole arch ring elevation.
S3: the rigid No. 0 block bracket 13 of structure of T shape, and T shape of constructing No. 0 block 14 of rigid structure, T shape are installed at the top of T shape rigid frame bridge pier 8
The top construction button of No. 0 block 14 of rigid structure takes 15；Continue to pour arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing, often pours one
Section just anchors cantilever end using interim 11 one end of knotted rope, and interim 11 other end of knotted rope is anchored on button tower 15,12 one end of dorsal funciculus
Anchoring button tower 15, the other end is anchored at respectively on access bridge abutment 2 and abutment pier basis 3, tensioning interim knotted rope 11 and back accordingly
Rope 12 adjusts arch ring elevation；Construction spandrel column pedestal 16 is respectively set in the cantilever on both sides, and sets up second respectively in the position
Tower crane 17.
S4: it is in place that each segment steel reinforcement cage 9 is transported using the first tower crane 5 and 17 relay of the second tower crane；Using the Hanging Basket mould that climbs
Plate system pours arch ring concrete paragraph by paragraph, often pours a section concrete and just anchors cantilever end using interim 11 one end of knotted rope, temporarily
11 other end of knotted rope is anchored on button tower 15, and tower 15 is buckled in the anchoring of 12 one end of dorsal funciculus, and the other end is anchored at access bridge abutment 2 and side respectively
On pier foundation 3, tensioning interim knotted rope 11 and dorsal funciculus 12 accordingly adjust arch ring elevation；During cantilever pouring, often pour
One section of setting is apart from identical spandrel column pedestal 16, until the cantilever pouring of two sides is to closure section；Adjustment arch rib axis is to setting
Closing construction is carried out after meter elevation and lateral fiducial line position.
S5: the main arch ring of cantilever pouring removes the bracket 6 of No. 1 segment 7 of main arch, removes and encircles upper first tower crane 5 and second
Tower crane 17, spandrel column 18 of constructing；Remove the rigid No. 0 block bracket 13 of structure of T shape, button tower 15, interim knotted rope 11 and other constructions
Basis, the rigid structure prestressed concrete beam 19 of cantilever construction T shape.
S6: using the rigid structure prestressed concrete beam 19 of T shape and the transport bracket of bracket trolley 20 is transported, it is flat to set up vault construction
Platform 21.
S7: after the completion of vault operation platform 21 is set up, the upper surface of cast-in-place girder 22, girder 22 need to answer in advance with the rigid structure of T shape
Power beams of concrete 19 is in same level.
S8: removing the first tower crane 5 and vault operation platform 21, and full-bridge construction is completed, and carries out main bridge dynamic and static load tests, joins
Joint-trial is adjusted, is put into effect.
Claims (10)
1. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system, which is characterized in that including means for mounting coupling parts, big casual labourer
Journey structure, the combination of auxiliary tower crane and knotted rope structure, wherein
The means for mounting coupling parts includes that main arch skewback basic (1), access bridge abutment (2) and abutment pier are basic (3), described in the setting of descending side
Main arch skewback is basic (1)；The access bridge abutment (2) is respectively set in uphill side and the abutment pier is basic (3)；
Described to face engineering structure include that dorsal funciculus anchor ingot (4), bracket (6) and tower are buckled (15) greatly, according to the feature of topography in the middle part of slope
The dorsal funciculus anchor ingot (4) is respectively set, the bracket (6) is close to basic (1) the vertical plane setting of the main arch skewback；The tower button
(15) it is set to the top of T shape No. 0 block (14) of rigid structure on the main arch skewback basic (1)；
The knotted rope structure includes interim knotted rope (11) and dorsal funciculus (12)；
The auxiliary tower crane combination includes the first tower crane (5) and the second tower crane (17), and first tower crane (5) is set to the master
Encircle the top of skewback basic (1), second tower crane (17), which is located on cantilever, to be arranged on spandrel column pedestal (16), the auxiliary
Tower crane combines mutual relay and transports each segment steel reinforcement cage (9) in place.
2. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system according to claim 1, which is characterized in that
T shape rigid frame bridge pier (8) is also set up on the main arch skewback basic (1), the interim knotted rope (11) is arranged in top, described interim
Knotted rope (11) other end is anchored on the end of cantilever；The dorsal funciculus (12), dorsal funciculus (12) one end anchoring is arranged in its back side
On the T shape rigid frame bridge pier (8), the other end is anchored on the dorsal funciculus anchor ingot (4)；The rigid No. 0 block support of structure of T shape is arranged in its top
Frame (13), No. 0 block (14) of the rigid structure of T shape above described rigid No. 0 block bracket (13) of structure of T shape.
3. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system according to claim 1 or 2, feature exist
In the interim knotted rope (11) being arranged on the button tower (15), interim knotted rope (11) other end is anchored in the end of cantilever
On；The dorsal funciculus (12) is arranged in the button tower (15) back side, and dorsal funciculus (12) other end is anchored in the access bridge abutment respectively
(2) and on the abutment pier basic (3).
4. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system according to claim 1-3,
It is characterized in that, the main arch skewback basic (1) is on one side horizontal plane, and another side is vertical plane, basic (1) water of the main arch skewback
Planar section is exposed and is in a horizontal plane.
5. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system according to claim 1-4,
It is characterized in that, bracket (6) lower end is fixed in slope, and as the support of No. 1 segment (7) of main arch, upper end is set as and institute
State the bevel structure that No. 1 segment (7) of main arch matches.
6. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring system according to claim 1-5,
It is characterized in that, the first tower crane (5) lower end is temporarily fixed on the horizontal plane of main arch skewback basic (1), and upper end cantilever stretches out
It moves outside and is provided with the drag-line for transporting the steel reinforcement cage (9).
7. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction method, using big as described in claim 1-6
Span railway reinforced concrete arch bridge cantilever pouring system, which is characterized in that include the following steps；
S1: construct the main arch skewback basic (1), construction access bridge abutment (2) and abutment pier are basic (3)；Carry out other big casual labourers
Journey construction, including the dorsal funciculus anchor ingot (4), the first tower crane (5), bracket (6), and the construction T shape rigid frame bridge pier
(8)；No. 1 segment (7) of the cast-in-place main arch, is accurately positioned its axis and absolute altitude on the bracket (6)；
S2: the arrangement of the interim knotted rope (11) is carried out；
S3: interim described in further progress each group with the progress for pouring arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing
The arrangement of knotted rope (11)；
S4: the steel reinforcement cage (9) is transported in first tower crane (5) and the second tower crane (17) mutual cooperation relay, and cantilever continues to pour
Main arch is built until closure section；
S5: the main arch ring of cantilever pouring removes the bracket (6), removes and encircles upper first tower crane (5) and second tower
(17) are hung, are constructed the spandrel column (18)；Remove No. 0 block bracket (13) of the rigid structure of the T shape, button tower (15), interim knotted rope
(11) and other constructions are basic, the rigid structure prestressed concrete beam (19) of cantilever construction T shape；
S6: using the rigid structure prestressed concrete beam (19) of the T shape and bracket trolley (20) transport bracket is transported, vault is set up and applies
Work platform (21)；
S7: after the completion of the vault operation platform (21) is set up, cast-in-place girder (22)；
S8: removing first tower crane (5) and vault operation platform (21) full-bridge construction is completed, and carries out main bridge sound and carries
Test, combined test put into effect.
8. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction method according to claim 7, special
Sign is, in S2, specifically comprises the following steps:
S21: each segment steel reinforcement cage (9) is transported in place using first tower crane (5), and piecewise using hanging basket formwork system of climbing
Pour arch ring concrete；
S22: often pouring one section of arch ring concrete, described interim knotted rope (11) one end is anchored cantilever end, the other end is anchored at
On the T shape rigid frame bridge pier (8)；
S23: while the dorsal funciculus (12) one end being anchored on the dorsal funciculus anchor ingot (4), and the corresponding interim button of tensioning
Rope (11) and dorsal funciculus (12) adjust arch ring elevation.
9. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction method according to claim 7, special
Sign is, in S3, specifically comprises the following steps:
S31: described rigid No. 0 block bracket (13) of structure of T shape is installed at the top of the T shape rigid frame bridge pier (8), and the construction T shape is rigid
No. 0 block (14) of structure, button of constructing at the top of it take (15)；
S32: continuing to pour arch ring concrete paragraph by paragraph using hanging basket formwork system of climbing, and often pours one section and just utilizes the interim knotted rope
(11) one end anchors cantilever end, and the other end is anchored at the button and takes on (15)；Dorsal funciculus (12) one end anchoring is described to buckle tower
(15), the other end is anchored at respectively on the access bridge abutment (2) and abutment pier basic (3), the corresponding interim knotted rope of tensioning
(11) and dorsal funciculus (12) arch ring elevation, is adjusted；
S33: the construction spandrel column pedestal (16) is respectively set in the cantilever on both sides, and sets up described second respectively in the position
Tower crane (17).
10. a kind of LONG-SPAN RAILWAY reinforced concrete arch bridge cantilever pouring construction method according to claim 7, special
Sign is, in S4, specifically comprises the following steps:
S41: it is in place that steel reinforcement cage (9) described in each segment is transported using first tower crane (5) and (17) relay of the second tower crane；
S42: using climbing, hanging basket formwork system pours arch ring concrete paragraph by paragraph, often pours a section concrete and just utilizes the interim button
Rope (11) one end anchors cantilever end, and the other end is anchored on the button tower (15), and dorsal funciculus (12) one end anchoring is described again
It detains tower (15), the other end is anchored at respectively on the access bridge abutment (2) and abutment pier basic (3), the corresponding interim button of tensioning
Rope (11) and dorsal funciculus (12) adjust arch ring elevation；
S43: it during cantilever pouring, often pours one section and is arranged apart from the identical spandrel column pedestal (16), until two
The cantilever pouring of bank is to closure section；
S44: closing construction is carried out after adjustment arch rib axis to design altitude and lateral fiducial line position.
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| CN110016854A (en) * | 2019-03-14 | 2019-07-16 | 中铁二院工程集团有限责任公司 | A kind of short tower oblique pull is put more energy into combination arch bridge construction |
| CN110130203A (en) * | 2019-05-30 | 2019-08-16 | 中铁第四勘察设计院集团有限公司 | A kind of deck type arch-rigid frame-continuous girder composite bridge and construction method |
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| CN114875769A (en) * | 2021-07-22 | 2022-08-09 | 长沙理工大学 | Prefabricated hollow sandwich concrete-filled steel tube arch bridge and construction method thereof |
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| CN115030052A (en) * | 2022-07-15 | 2022-09-09 | 广西大学 | Rapid safe construction and intelligent monitoring control method for continuous arch bridge |
| CN115162211A (en) * | 2022-09-07 | 2022-10-11 | 中铁十七局集团第五工程有限公司 | Cantilever pouring construction method for main arch ring of reinforced concrete arch bridge |
| CN115162211B (en) * | 2022-09-07 | 2022-12-30 | 中铁十七局集团第五工程有限公司 | Cantilever pouring construction method for main arch ring of reinforced concrete arch bridge |
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