CN108867408B - Cantilever pouring method for single-box single-chamber arch bridge arch ring - Google Patents
Cantilever pouring method for single-box single-chamber arch bridge arch ring Download PDFInfo
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- CN108867408B CN108867408B CN201810793561.XA CN201810793561A CN108867408B CN 108867408 B CN108867408 B CN 108867408B CN 201810793561 A CN201810793561 A CN 201810793561A CN 108867408 B CN108867408 B CN 108867408B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 claims abstract description 31
- 238000005266 casting Methods 0.000 claims abstract description 27
- 238000009415 formwork Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 14
- 239000010959 steel Substances 0.000 abstract description 14
- 230000008093 supporting effect Effects 0.000 abstract description 11
- 238000004132 cross linking Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
- E01D21/10—Cantilevered erection
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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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Abstract
The invention provides a cantilever pouring method of a single-box single-chamber arch bridge arch ring, which is characterized in that a guide component for an internal mold fixing component is arranged on a supporting section, a moving component and an internal mold fixing component are arranged on the guide component, the internal mold fixing component is used for fixing a pouring internal mold of a target section, and the moving component is used for driving the internal mold fixing component to move along the guide component; pouring the target segment, and taking the poured target segment as a new support segment; and installing a guide assembly on the new support section, moving the inner mold fixing assembly to the new support section by using the moving assembly, and completing the casting of the subsequent stage. The single-box single-chamber arch bridge adopts the special inner mold fixing component to fix the pouring inner mold, so that the rigidity is better, the load of a larger arch ring concrete top plate and a steel mold can be borne, the self deformation is smaller, and the concrete pouring quality of the top plate is excellent; and the support does not need to be frequently installed and removed, so that the construction period can be shortened, and the construction cost can be reduced.
Description
Technical Field
The invention relates to the field of construction and construction of single-box single-chamber arch bridges by pouring concrete in a cantilever manner, in particular to a method for pouring a cantilever of an arch ring of a single-box single-chamber arch bridge.
Background
Since the cantilever casting method is used for arch bridge construction, the conventional method for supporting the suspended casting arch ring inner mold is to set up a bracket for supporting an inner mold top plate in a section of the arch ring to be cast, and the method is widely applied to the construction of single-box multi-chamber suspended casting arch bridges. The existing (in cantilever casting and inclined pulling buckling hanging construction processes) arch bridges are single-box multi-chamber arch bridges (the cross section form of the arch bridge adopts the single-box multi-chamber cross section form), the concrete construction process comprises the steps of binding bottom plate and web steel bars, installing bottom plate and web inner molds, erecting top mold supports, laying top plate inner molds, binding top plate steel bars, installing embedded parts, erecting outer molds and pouring arch ring concrete.
However, in the single-box single-chamber arch bridge, because the span of the arch ring is too large and the width of the cross section is wide, the load which needs to be borne by the inner mold is large, and when pouring construction is carried out, the inner mold needs to be made of steel plates. Because the inner mould is supported by the support in the existing pouring mode, when a single-box single-chamber arch bridge is poured, the support needs to bear the weight of the steel inner mould and the weight of a pouring part, the borne load is very large, and the support is easy to deform due to insufficient rigidity, so that the supporting effect cannot be realized, and safety accidents are caused. In addition, the existing pouring means needs to install and detach the support when pouring each section of the arch ring, so that construction is inconvenient, the construction period can be prolonged, and finally the construction cost is increased.
Therefore, how to improve the safety of arch ring pouring of the single-box single-chamber arch bridge, shorten the construction period and reduce the construction cost becomes a problem which needs to be solved by technical personnel in the field.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cantilever casting method of a single-box single-chamber arch bridge arch ring, which adopts a special inner mold fixing component to fix a casting inner mold, has better rigidity, can bear larger load of an arch ring concrete top plate and a steel mold, has smaller self deformation and excellent top plate concrete casting quality; and the support does not need to be frequently installed and removed, so that the construction period can be shortened, and the construction cost can be reduced.
In order to solve the technical problems, the invention adopts the following technical scheme:
a cantilever pouring method for an arch ring of a single-box single-chamber arch bridge comprises the following steps:
dividing a single-box single-chamber arch bridge arch ring into a plurality of sections, and completing construction of arch springing sections in a support cast-in-place mode;
taking an unfired segment adjacent to the arch foot segment as a target segment and the arch foot segment as a support segment;
the method comprises the steps of obtaining a cantilever pouring device of a single-box single-chamber arch bridge arch ring, wherein the cantilever pouring device comprises a guide assembly, a moving assembly and an inner mold fixing assembly, the guide assembly for the inner mold fixing assembly is installed on a supporting section, the moving assembly and the inner mold fixing assembly are installed on the guide assembly, the inner mold fixing assembly is used for fixing a pouring inner mold of a target section, the moving assembly is used for driving the inner mold fixing assembly to move along the guide assembly, and the pouring inner mold is formed by an inner mold top plate, an inner mold bottom plate and two inner mold side plates in a surrounding mode;
pouring the target section, taking the target section which is poured as a new support section, and taking an unfired section adjacent to the new support section as a new target section;
installing a guide assembly on the new support section and moving the inner mold fixing assembly to the new support section by using the moving assembly;
pouring the new target segment;
and repeating the steps until the pouring of the whole arch ring is completed.
Preferably, in the single-box single-chamber arch bridge arch ring cantilever casting device, the guide assembly is mounted on the end of the cast arch ring facing the target segment arch ring, and a moving assembly is mounted on the guide assembly and can move along the length direction of the arch bridge relative to the guide assembly; the cantilever pouring device of the single-box single-chamber arch bridge arch ring further comprises an inner mold fixing assembly connected with the moving assembly, the inner mold fixing assembly comprises an arch ring hanging basket for workers to construct, and the arch ring hanging basket is arranged along the length direction of the arch bridge; the inner mold fixing assembly further comprises a fixing assembly for fixedly installing a pouring inner mold, and when the fixing assembly fixes the pouring inner mold, the pouring inner mold is aligned with the end, facing the target segment arch ring, of the finished pouring arch ring.
Preferably, the arch ring hanging basket further comprises two C-shaped hooks oppositely arranged on two sides of the arch ring hanging basket, each C-shaped hook comprises a first transverse connecting part, a vertical connecting part and a second transverse connecting part which are connected end to end, the first transverse connecting part is fixedly connected with the arch ring hanging basket, the second transverse connecting part is movably arranged on the guide assembly, and the second transverse connecting part can move relative to the guide assembly along the length direction of the arch bridge; many string basket suspender are installed respectively to arch ring string basket both sides, and the lower extreme and the arch ring string basket side fixed connection of every string basket suspender, and the different string basket suspender lower extreme sets up along arch ring string basket length direction interval with the hookup location of arch ring string basket, and the upper end of hanging the basket suspender with one side all is close to the one end fixed connection of second transverse connection portion with the vertical connecting portion of the looks homonymy.
Preferably, the fixing component comprises at least two vertical support rods which are vertically arranged, the vertical support rods are arranged at one end, away from the poured arch ring, of the upper end surface of the arch ring hanging basket along the width direction of the arch ring hanging basket, the upper ends of the vertical support rods are connected with support rod cross beams which are transversely arranged along the width direction of the arch ring hanging basket, a first threaded pull rod fixing device is arranged at a position which is away from the tail end of the poured arch ring by a preset distance, and second threaded pull rod fixing devices corresponding to the first threaded pull rod fixing devices are arranged on the support rod cross beams, the fixing component also comprises a fixing longitudinal beam, two ends of the fixing longitudinal beam are respectively arranged on the first threaded pull rod fixing device and the second threaded pull rod fixing device, the fixed longitudinal beam can adjust the position of the pouring inner die under the tensioning action of the first threaded pull rod fixing device and the second threaded pull rod fixing device, and at the moment, the upper surface of the fixed longitudinal beam is in contact with the lower surface of the inner die top plate.
Preferably, the first threaded pull rod fixing device comprises a first threaded pull rod which penetrates through the top plate in a direction perpendicular to the length direction of the arch ring hanging basket, fixing nuts are mounted at two ends of the first threaded pull rod, and a fixing longitudinal beam is mounted between the fixing nut at the lower end of the first threaded pull rod and the lower surface of the top plate of the arch ring after pouring is completed;
the second threaded pull rod fixing device comprises a second threaded pull rod which penetrates through the support rod cross beam in the length direction of the arch ring hanging basket, fixing nuts are installed at two ends of the second threaded pull rod, and the fixing longitudinal beam is installed between the fixing nuts at the lower end of the second threaded pull rod and the lower surface of the support rod cross beam.
Preferably, a plurality of fixed longitudinal beams are arranged in parallel at intervals along the width direction of the arch ring hanging basket, and a fixed support is arranged between each fixed longitudinal beam and the upper wall of the pouring internal mold.
Preferably, the fixed support comprises a triangular inclined strut installed on the fixed longitudinal beam along the length direction of the fixed longitudinal beam, and a cross-linking support connected with the triangular inclined strut of different fixed longitudinal beams along the width direction of the fixed longitudinal beam.
Preferably, the guide assembly is a slide rail arranged along the length direction of the arch bridge, and the second transverse connecting part of the C-shaped hook is connected with the slide rail in a sliding manner.
Preferably, the moving assembly is a jack, the jack is installed on one side, facing the target section, of the second transverse connecting portion of the C-shaped hook, and the jack can drag the C-shaped hook to move towards the target section, so as to drag the arch ring cradle to move towards the target section.
Preferably, the pouring of the target segment includes that the fixed longitudinal beam is installed on the first threaded pull rod fixing device and the second threaded pull rod fixing device, a triangular inclined strut and a cross-connecting support are installed, the fixed nut is rotated to adjust the height of the fixed longitudinal beam, the cross-connecting support is made to be in contact with the lower surface of an inner mold top plate of the pouring inner mold and drive the pouring inner mold to a preset position, and the target segment is poured;
installing a guide assembly on the new support section and moving the inner mold fixing assembly to the new support section using the moving assembly comprises:
after the poured target section is solidified and reaches the preset strength, removing the first threaded pull rod fixing device and the cross-linked bracket;
adjusting a fixing nut of the first threaded pull rod fixing device to separate one end of the cross-linked support, which is close to the first threaded pull rod fixing device, from the upper wall of the inner side template of the pouring inner mold, and detaching the cross-linked support; the sliding rail is installed on the new supporting section, the newly installed sliding rail is communicated with the existing sliding rail, the internal mold fixing assembly is dragged to the new supporting section by the jack, and in the construction process, the internal mold fixing assembly is moved while the hanging basket is guaranteed to move, so that the linked movement of the hanging basket and the internal mold fixing assembly is realized.
In summary, the invention provides a cantilever casting method for a single-box single-chamber arch bridge arch ring, which comprises the steps of installing a guide assembly for an inner mold fixing assembly on a support section, installing a moving assembly and an inner mold fixing assembly on the guide assembly, wherein the inner mold fixing assembly is used for fixing a casting inner mold of a target section, and the moving assembly is used for driving the inner mold fixing assembly to move along the guide assembly; pouring the target segment, and taking the poured target segment as a new support segment; and installing a guide assembly on the new support section, moving the inner mold fixing assembly to the new support section by using the moving assembly, and completing the casting of the subsequent stage. The single-box single-chamber arch bridge adopts the special inner mold fixing component to fix the pouring inner mold, so that the rigidity is better, the load of a larger arch ring concrete top plate and a steel mold can be borne, the self deformation is smaller, and the concrete pouring quality of the top plate is excellent; and the support does not need to be frequently installed and removed, so that the construction period can be shortened, and the construction cost can be reduced.
Drawings
For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:
FIG. 1 is a schematic structural diagram of a single-box single-chamber arch bridge arch ring cantilever casting device disclosed by the invention;
FIG. 2 is a schematic cross-sectional structure view of a 1-1 surface of a pouring device for a cantilever of an arch ring of a single-box single-chamber arch bridge disclosed by the invention;
fig. 3 is a schematic sectional structure view of the 2-2 surface of the pouring device of the single-box single-chamber arch bridge arch ring disclosed by the invention.
Description of reference numerals: the arch ring hanging basket comprises an arch ring hanging basket 1, a pouring internal mold 2, a C-shaped hook 3, a hanging basket sling 4, a moving assembly 5, a guide assembly 6, a vertical stay bar 7, a stay bar crossbeam 8, a top plate 9 of a poured segmental arch ring, a first threaded pull rod fixing device 10, a second threaded pull rod fixing device 11, a fixed longitudinal beam 12, a fixed support 13, a triangular oblique support frame 14 and a cross-linking support 15.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A cantilever pouring method for an arch ring of a single-box single-chamber arch bridge comprises the following steps:
dividing a single-box single-chamber arch bridge arch ring into a plurality of sections, and completing construction of arch springing sections in a support cast-in-place mode;
taking an unfired segment adjacent to the arch foot segment as a target segment and the arch foot segment as a support segment;
the method comprises the steps of obtaining a cantilever pouring device of a single-box single-chamber arch bridge arch ring, wherein the cantilever pouring device comprises a guide assembly, a moving assembly and an inner mold fixing assembly, the guide assembly for the inner mold fixing assembly is installed on a supporting section, the moving assembly and the inner mold fixing assembly are installed on the guide assembly, the inner mold fixing assembly is used for fixing a pouring inner mold of a target section, the moving assembly is used for driving the inner mold fixing assembly to move along the guide assembly, and the pouring inner mold is formed by an inner mold top plate, an inner mold bottom plate and two inner mold side plates in a surrounding mode;
pouring the target section, taking the target section which is poured as a new support section, and taking an unfired section adjacent to the new support section as a new target section;
installing a guide assembly on the new support section and moving the inner mold fixing assembly to the new support section by using the moving assembly;
pouring the new target segment;
and repeating the steps until the pouring of the whole arch ring is completed.
The invention adopts a special inner mold fixing component to fix the pouring inner mold aiming at the single-box single-chamber arch bridge, has better rigidity, can bear larger load of an arch ring concrete top plate and a steel mold, has smaller self deformation and excellent top plate concrete pouring quality. Compared with the prior art that the support is adopted to support the casting inner mold, and the support needs to be reinstalled and removed at each stage, the cast section is adopted as the support section to provide support for the cantilever casting device of the single-box single-chamber arch bridge arch ring, the cantilever casting device of the single-box single-chamber arch bridge arch ring is utilized to provide support for the casting inner mold of the target section to be cast, casting of the target section is completed, then the cast target section is used as a new support section, the inner mold fixing component is moved to the new support section, casting of the next target section is completed, and the cycle is repeated, so that casting of the whole arch ring is completed. The support does not need to be frequently installed and removed, the construction period can be shortened, and the construction cost is reduced.
In the concrete implementation, as shown in fig. 1, in the cast-in-place device of the arch ring of the single-box single-chamber arch bridge, the guide assembly is installed on the end part, facing the arch ring of the target section, of the finished cast arch ring, and the guide assembly is provided with a moving assembly which can move along the length direction of the arch bridge relative to the guide assembly; the cantilever pouring device of the single-box single-chamber arch bridge arch ring further comprises an inner mold fixing assembly connected with the moving assembly, the inner mold fixing assembly comprises an arch ring hanging basket for workers to construct, and the arch ring hanging basket is arranged along the length direction of the arch bridge; the inner mold fixing assembly further comprises a fixing assembly for fixedly installing a pouring inner mold, and when the fixing assembly fixes the pouring inner mold, the pouring inner mold is aligned with the end, facing the target segment arch ring, of the finished pouring arch ring.
The arch ring centre form is supported with the support, does not look for the strong point well, falls down easily and causes the incident, through adopting present scheme, can avoid carrying out complicated loaded down with trivial details construction in the great arch ring of radian, simplifies the construction process, makes things convenient for workman's operation, reduces the construction risk.
When the arch ring hanging basket is specifically implemented, the arch ring hanging basket further comprises two C-shaped hooks which are oppositely arranged on two sides of the arch ring hanging basket, each C-shaped hook comprises a first transverse connecting part, a vertical connecting part and a second transverse connecting part which are connected end to end, the first transverse connecting part is fixedly connected with the arch ring hanging basket, the second transverse connecting part is movably arranged on the guide assembly, and the second transverse connecting part can move relative to the guide assembly along the length direction of the arch bridge; many string basket suspender are installed respectively to arch ring string basket both sides, and the lower extreme and the arch ring string basket side fixed connection of every string basket suspender, and the different string basket suspender lower extreme sets up along arch ring string basket length direction interval with the hookup location of arch ring string basket, and the upper end of hanging the basket suspender with one side all is close to the one end fixed connection of second transverse connection portion with the vertical connecting portion of the looks homonymy.
Adopt two C type couples to be connected arch ring string basket both sides with the direction subassembly for arch ring string basket is firm with being connected of direction subassembly, can not appear turning on one's side. In addition, a plurality of hanging basket hanging belts are arranged along the length direction of the arch ring hanging basket, so that the posture of the arch ring hanging basket is fixed, the arch ring hanging basket is prevented from overturning, and the safety of workers during construction is improved.
As shown in fig. 2, in specific implementation, the fixing assembly includes at least two vertical support rods vertically arranged, the vertical support rods are installed on an upper end surface of the arch ring hanging basket along the width direction of the arch ring hanging basket and are far away from one end of the poured arch ring, the upper ends of the vertical support rods are connected with a support rod cross beam transversely arranged along the width direction of the arch ring hanging basket, a first threaded pull rod fixing device is arranged at a position away from the end of the poured arch ring by a preset distance, a second threaded pull rod fixing device corresponding to the first threaded pull rod fixing device is arranged on the support rod cross beam, the fixing assembly further includes a fixing longitudinal beam, two ends of the fixing longitudinal beam are respectively installed on the first threaded pull rod fixing device and the second threaded pull rod fixing device, the fixing longitudinal beam can adjust the position of the poured inner mold under the tensioning action of the first threaded pull rod fixing device and the second threaded pull rod fixing device, at this time, the upper surface of the fixed longitudinal beam is in contact with the lower surface of the inner mold top plate.
According to the invention, a first threaded pull rod fixing device is arranged on an arch ring which is poured and is 30-70 cm (namely a preset distance) away from the tail end of the arch ring which is poured, the first threaded pull rod fixing device is arranged before pouring, when the arch ring hanging basket needs to be moved after pouring is finished, the first threaded pull rod fixing device is detached, and after the arch ring hanging basket is moved, the first threaded pull rod fixing device is arranged on a new supporting section. Compared with the prior art that all the supports need to be installed and removed, the invention only needs to install the first threaded pull rod fixing device again, is convenient to install and can effectively save the construction period.
In specific implementation, the first threaded pull rod fixing device comprises a first threaded pull rod which penetrates through the top plate in a direction perpendicular to the length direction of the arch ring hanging basket, fixing nuts are mounted at two ends of the first threaded pull rod, and a fixing longitudinal beam is mounted between the fixing nut at the lower end of the first threaded pull rod and the lower surface of the top plate of the arch ring after pouring is completed;
the second threaded pull rod fixing device comprises a second threaded pull rod which penetrates through the support rod cross beam in the length direction of the arch ring hanging basket, fixing nuts are installed at two ends of the second threaded pull rod, and the fixing longitudinal beam is installed between the fixing nuts at the lower end of the second threaded pull rod and the lower surface of the support rod cross beam.
In the invention, the fixed longitudinal beam can be section steel, and particularly can adopt I-shaped steel or H-shaped steel. As shown in fig. 3, pour the centre form and enclose by centre form roof, centre form bottom plate and two centre form curb plates, fixed longeron passes from the middle zone of pouring the centre form, through adjusting rotatory fixation nut, can adjust the height of fixed longeron to adjust the height of pouring the centre form, after pouring the centre form and adjusting to suitable height, can pour. The invention adopts the threaded pull rod fixing device, has simple structure, is convenient to install and is not easy to damage.
During specific implementation, a plurality of fixed longitudinal beams are arranged in parallel at intervals along the width direction of the arch ring hanging basket, and a fixed support is arranged between each fixed longitudinal beam and the upper wall of the pouring internal mold.
Can adopt many fixed longerons to installation fixed bolster on the longeron, the fixed bolster can restrict to pour the centre form along fixed longeron width direction motion, can also increase and pour the area of contact of centre form, and the messenger pours the centre form more firm, thereby improves the security when pouring.
During specific implementation, the fixed support comprises a triangular inclined strut arranged on the fixed longitudinal beam along the length direction of the fixed longitudinal beam, and a cross-linking support connected with the triangular inclined strut of different fixed longitudinal beams along the width direction of the fixed longitudinal beam.
As shown in fig. 1, when the fixing brackets are installed, the triangular oblique brackets are firstly welded on the fixing longitudinal beams, and then the cross brackets are installed between the triangular oblique brackets.
During specific implementation, the guide assembly is a sliding rail arranged along the length direction of the arch bridge, and the second transverse connecting part of the C-shaped hook is connected with the sliding rail in a sliding manner.
The guide assembly is a sliding rail, particularly a steel sliding rail, and the arch bridge is poured for outdoor operation, so that the sliding rail is simple in structure, not easy to damage and suitable for outdoor operation. The second transverse connecting part of the C-shaped hook is connected with the sliding rail in a sliding mode, the specific connection mode is not limited, and a sliding groove or a sliding block matched with the sliding rail can be arranged on the second transverse connecting part.
During specific implementation, the moving assembly is a jack, the jack is installed on one side, facing the target section, of the second transverse connecting portion of the C-shaped hook, and the jack can drag the C-shaped hook to move towards the target section, so that the arch ring hanging basket is dragged to move towards the target section.
The jack accessible finish rolling screw-thread steel, steel cable or cable are connected with second transverse connection portion, because of jack simple structure and not fragile, are fit for being used for outdoor operations, consequently adopt the jack as removing the subassembly.
During specific implementation, the pouring of the target segment comprises the steps of installing a fixed longitudinal beam on a first threaded pull rod fixing device and a second threaded pull rod fixing device, installing a triangular inclined strut and a cross-linked bracket, rotating a fixing nut to adjust the height of the fixed longitudinal beam, enabling the cross-linked bracket to be in contact with the lower surface of an inner mold top plate of a pouring inner mold and driving the pouring inner mold to a preset position, and pouring the target segment;
installing a guide assembly on the new support section and moving the inner mold fixing assembly to the new support section using the moving assembly comprises:
after the poured target section is solidified and reaches the preset strength, removing the first threaded pull rod fixing device and the cross-linked bracket;
adjusting a fixing nut of the first threaded pull rod fixing device to separate one end of the cross-linked support, which is close to the first threaded pull rod fixing device, from the upper wall of the inner side template of the pouring inner mold, and detaching the cross-linked support; the sliding rail is installed on the new supporting section, the newly installed sliding rail is communicated with the existing sliding rail, the internal mold fixing assembly is dragged to the new supporting section by the jack, and in the construction process, the internal mold fixing assembly is moved while the hanging basket is guaranteed to move, so that the linked movement of the hanging basket and the internal mold fixing assembly is realized.
After the first threaded pull rod fixing device is dismounted, the fixing nut of the second threaded pull rod fixing device can be properly adjusted, and the height of the fixed longitudinal beam at the end can be reduced, so that the elevation of the front end of the fixed longitudinal beam is reduced, and the stability of the longitudinal beam in the moving process is ensured.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810793561.XA CN108867408B (en) | 2018-07-19 | 2018-07-19 | Cantilever pouring method for single-box single-chamber arch bridge arch ring |
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| CN201810793561.XA CN108867408B (en) | 2018-07-19 | 2018-07-19 | Cantilever pouring method for single-box single-chamber arch bridge arch ring |
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| CN108867408B true CN108867408B (en) | 2020-04-28 |
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| CN111764305B (en) * | 2020-07-20 | 2022-02-11 | 四川省公路规划勘察设计研究院有限公司 | The main arch forming technology of the main arch with single rib dislocation cantilever casting synchronous lateral connection |
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| CN200967931Y (en) * | 2006-08-23 | 2007-10-31 | 四川路桥建设股份有限公司 | Side-truss cradle for suspension pouring arch-type bridge |
| CN202055183U (en) * | 2011-04-14 | 2011-11-30 | 中交武汉港湾工程设计研究院有限公司 | Construction hanging basket for arched bridge formed by suspension casting |
| CN102409618B (en) * | 2011-10-09 | 2014-07-09 | 贵州路桥集团有限公司 | Inverted type triangular and obliquely-creeping cradle |
| CN105088968B (en) * | 2015-08-28 | 2018-05-01 | 中交一公局第四工程有限公司 | Cantilever pouring arch bridge Hanging Basket push mode crawler belt tankette traveling method |
| RU2612050C1 (en) * | 2015-10-22 | 2017-03-02 | Федеральное бюджетное образовательное учреждение высшего профессионального образования "Морской государственный университет имени адмирала Г.И. Невельского" | Construction method of cable-stayed bridge above sea navigable strait |
| CN106988230B (en) * | 2017-05-04 | 2022-11-29 | 贵州桥梁建设集团有限责任公司 | Hanging basket structure used in reinforced concrete arch bridge construction process |
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