CN219886538U - Lay outer inclination column harp type concrete part cable-stayed bridge of auxiliary pier - Google Patents

Lay outer inclination column harp type concrete part cable-stayed bridge of auxiliary pier Download PDF

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Publication number
CN219886538U
CN219886538U CN202321155606.3U CN202321155606U CN219886538U CN 219886538 U CN219886538 U CN 219886538U CN 202321155606 U CN202321155606 U CN 202321155606U CN 219886538 U CN219886538 U CN 219886538U
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China
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bridge
tower
pier
bridge tower
cable
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苏伟
左家强
李恩良
张悦
王俊杰
郗敬宇
武文平
张帅
王江波
马辰龙
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China Railway Design Corp
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China Railway Design Corp
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Abstract

The utility model discloses an outer-inclined tower column harp-type concrete partial cable-stayed bridge with auxiliary piers, which comprises a reinforced concrete bridge tower and side piers, wherein the reinforced concrete bridge tower comprises a bridge tower lower main pier for supporting, the upper end of the bridge tower lower main pier is fixedly connected with a bridge tower upper double-tower column, the lower main pier and the side piers of the bridge tower support a prestressed concrete box girder, the lower end of the prestressed concrete box girder is also provided with the auxiliary piers for supporting the prestressed concrete box girder, and a cable girder upper anchoring device is arranged between the prestressed concrete box girder upper auxiliary piers and the bridge tower lower main pier. According to the utility model, the two tower columns transversely integrally incline outwards without arranging a cross beam, the horizontal component force of the gravity of the tower columns is balanced by utilizing the horizontal component force of the inhaul cable inwards, and the inhaul cable and the bridge tower are reasonably stressed in a cooperative manner. The utility model widens the applicability of the traditional concrete partial cable-stayed bridge to low longitudinal section bridge sites, has good economy, stress safety and landscape property, is simple and convenient to construct, and has wider application prospect in large-span bridges.

Description

Lay outer inclination column harp type concrete part cable-stayed bridge of auxiliary pier
Technical Field
The utility model belongs to the technical field of bridge crossing systems, and particularly relates to an externally-inclined tower column harp type concrete partial cable-stayed bridge with auxiliary piers.
Background
The concrete part cable-stayed bridge is a common bridge structure, generally a 3-span structure, the bearing capacity of the structure is improved by arranging a bridge tower and a stay cable on a continuous beam or a rigid frame, the concrete main beam is a main stress member, the stay cable is an auxiliary stress member, and the effective tower height is generally 1/8~1/12 of the main span. In order to meet the requirements of beam end corners, the beam height is higher, the side span is shorter, the root beam height is generally 1/16-1/18 of the main span, the span middle beam height is generally about 0.55 times of the root beam height, the side middle span ratio is generally 0.45-0.5, and the side span adjustment degree of freedom is not large.
Chinese patent CN202210732422.2 discloses a structural system for a prestressed concrete steel-concrete partial cable-stayed bridge, and the patent discloses that the top surface of each buttress is provided with spherical steel supports with different types and different tonnages, the junction of the bridge tower and the prestressed concrete box girder section is provided with a fixed spherical steel support, and the rest is provided with a longitudinal movable spherical steel support, aiming at the improvement of the spherical steel support, the adaptation to a low longitudinal section is not realized.
The bridge type of the concrete part cable-stayed bridge generally adopts double parallel tower columns, stay ropes adopt fan-shaped arrangement, and the larger beam height of the stay ropes is adopted, so that the cable-stayed bridge has a general landscape effect and is not suitable for bridge sites with controlled longitudinal sections.
Disclosure of Invention
The utility model provides an externally-inclined pylon harp type concrete part cable-stayed bridge with auxiliary piers, which aims to solve the problems existing in the prior art.
The technical scheme of the utility model is as follows: the utility model provides an establish outer concrete part cable-stayed bridge of tower column harp formula of assisting mound, includes reinforced concrete bridge tower, side mound, reinforced concrete bridge tower is including the bridge tower lower part main mound of supporting usefulness, bridge tower lower part main mound upper end has consolidated bridge tower upper portion double-tower post, bridge tower lower part main mound, side mound support prestressed concrete box girder, prestressed concrete box girder lower extreme still is provided with the assisting mound that supports it, be provided with cable roof beam anchor on the prestressed concrete box girder on assisting mound, the bridge tower lower part main mound between.
Further, a wire-dividing pipe cable saddle is arranged in the double-tower column at the upper part of the bridge tower, and the wire-dividing pipe cable saddle is symmetrically arranged in the double-tower column at the upper part of the bridge tower.
Furthermore, a stay cable is arranged between the anchoring device on the cable beam and the wire-dividing pipe cable saddle.
Still further, the top of the main pier of bridge tower lower part is provided with bridge tower pedestal packing stone subassembly, bridge tower pedestal packing stone subassembly upper end is provided with bridge tower support subassembly, bridge tower support subassembly links to each other with the bridge tower position of prestressed concrete box girder.
Still further, the top of side pier is provided with side pier pedestal filler subassembly, side pier pedestal filler subassembly upper end is provided with side pier support subassembly and side pier department crossbeam and prevents the roof beam device that falls, pier support subassembly, side pier department crossbeam prevent that the roof beam device upper end links to each other with the side pier position of prestressed concrete case roof beam.
Still further, the top of supplementary mound is provided with supplementary mound pedestal filler subassembly, supplementary mound pedestal filler subassembly upper end is provided with supplementary mound support subassembly, supplementary mound department crossbeam and prevents the roof beam device that falls, and supplementary mound support subassembly, supplementary mound department crossbeam prevent that the roof beam device upper end from falling links to each other with the supplementary mound position of prestressed concrete case roof beam.
Furthermore, the cable beam upper anchoring device comprises a main beam upper concrete anchor block and a main beam upper concrete anchoring beam, wherein the main beam upper concrete anchor block, the main beam upper concrete anchoring beam and the prestressed concrete box beam are fixedly connected, and the main beam upper concrete anchor block provides a mounting foundation for the cable.
Furthermore, the main pier at the lower part of the bridge tower adopts a shuttle-shaped section with the end part in a horseshoe shape, and the pier body of the main pier at the lower part of the bridge tower is provided with a groove.
Furthermore, the double-tower column at the upper part of the bridge tower adopts a horseshoe-shaped section, the whole double-tower column at the upper part of the bridge tower transversely inclines outwards, and the section of the double-tower column at the upper part of the bridge tower longitudinally changes gradually at a constant slope rate.
Further, the transverse and longitudinal outer edge slope rates of the main pier at the lower part of the bridge tower are consistent with the outer edge slope rates of the double tower columns at the upper part of the bridge tower.
The beneficial effects of the utility model are as follows:
the auxiliary pier is arranged on the basis of the traditional three-span type partial cable-stayed bridge, auxiliary spans are added, the beam end corner can be effectively reduced, the structural rigidity is improved, the height of the main beam can be reduced, and the economy and the adaptability to low-longitudinal-section bridge sites are improved.
The auxiliary span is arranged, the stress of the side support is improved, systematic problems such as negative reaction force and the like of the side support caused by measures such as increasing the beam height, shortening the side span and the like of the traditional partial cable-stayed bridge for improving the beam end corner are avoided, and accordingly the side support is prevented from being provided with the tension support or the side span is prevented from being provided with the compression weight, and the safety of the bridge span structure is improved.
According to the utility model, the two tower columns transversely integrally incline outwards without arranging a cross beam, the horizontal component force of the tower column gravity is balanced by utilizing the horizontal component force of the inhaul cable inwards, the inhaul cable and the bridge tower are reasonably stressed in a coordinated manner, and the arrangement of the vertical surfaces of the cable surfaces adopts the harp type, so that the landscape of the bridge span structure is improved.
The utility model widens the applicability of the traditional concrete partial cable-stayed bridge to low longitudinal section bridge sites, has good economy, stress safety and landscape property, is simple and convenient to construct, and has wider application prospect in large-span bridges.
Drawings
FIG. 1 is a schematic elevational view of the present utility model;
FIG. 2 is a schematic illustration of a transverse arrangement of a bridge tower and a main beam passing through a tower column in accordance with the present utility model;
FIG. 3 is a schematic cross-sectional view of an upper column of the bridge tower of the present utility model;
FIG. 4 is a schematic cross-sectional view of the lower main pier top and upper column bottom of the bridge tower of the present utility model;
FIG. 5 is a schematic view of a broken surface of a main beam at a pylon in accordance with the present utility model;
FIG. 6 is a schematic general cross-sectional view of the main beam of the present utility model in an area other than the pylon;
FIG. 7 is a schematic cross-sectional view of the main beam of the present utility model at the anchor block and the anchor beam;
FIG. 8 is a schematic representation of the pier top plan layout at the auxiliary piers of the present utility model;
FIG. 9 is a schematic representation of the pier top plan layout at the side piers in the present utility model;
FIG. 10 is a schematic view of a support restraint system arrangement in accordance with the present utility model;
wherein:
1. prestressed concrete box girder 2 reinforced concrete bridge tower
3. Anchor device on stay cable 4 cable beam
5. Auxiliary pier 6 side pier
7. Support seat
9. Longitudinal liquid viscous damper
2-1 bridge tower lower part main pier 2-2 bridge tower upper part double tower column
2-3 main pier top supporting cushion stone 2-4 main pier top transverse beam falling prevention pedestal
2-5 main pier top longitudinal damper pedestal 2-6 wire-dividing tube cable saddle
Concrete anchor block on 4-1 girder and concrete anchor beam on 4-2 girder
5-1 auxiliary pier supporting cushion stone 5-2 auxiliary pier transverse beam falling prevention pedestal
6-1 side pier supporting cushion stone 6-2 side pier transverse beam falling prevention pedestal
7-1 fixed support 7-2 transverse movable support
7-3 longitudinal cradle 7-4 multidirectional cradle
Transverse beam falling preventing device at 8-1 main pier and transverse beam falling preventing device at 8-2 auxiliary pier
And a beam falling preventing device for the beam at the 8-3 side pier.
Detailed Description
The present utility model will be described in detail below with reference to the drawings and examples:
as shown in fig. 1-10, an outer-inclined tower column harp type concrete partial cable-stayed bridge with auxiliary piers comprises a reinforced concrete bridge tower 2 and side piers 6, wherein the reinforced concrete bridge tower 2 comprises a bridge tower lower main pier 2-1 for supporting, the upper end of the bridge tower lower main pier 2-1 is fixedly provided with a bridge tower upper double-tower column 2-2, the bridge tower lower main pier 2-1 and the side piers 6 support a prestressed concrete box girder 1, the lower end of the prestressed concrete box girder 1 is further provided with the auxiliary piers 5 for supporting the prestressed concrete box girder 1, and a cable girder upper anchoring device 4 is arranged between the auxiliary piers 5 and the bridge tower lower main pier 2-1.
The two tower columns 2-2 at the upper part of the bridge tower are internally provided with wire-dividing pipe cable saddles 2-6, and the wire-dividing pipe cable saddles 2-6 are symmetrically distributed in the two tower columns 2-2 at the upper part of the bridge tower.
And a stay cable 3 is arranged between the cable beam upper anchoring device 4 and the wire-dividing pipe cable saddle 2-6.
The top of the main pier 2-1 at the lower part of the bridge tower is provided with a bridge tower pedestal packing stone component, the upper end of the bridge tower pedestal packing stone component is provided with a bridge tower support component, and the bridge tower support component is connected with the bridge tower position of the prestressed concrete box girder 1.
The top of side pier 6 is provided with side pier pedestal bolster subassembly, side pier pedestal bolster subassembly upper end is provided with side pier support subassembly and side pier department crossbeam and prevents beam falling device 8-3, the side pier position of pier support subassembly, side pier department crossbeam prevents beam falling device 8-3 upper end and prestressed concrete box girder 1 links to each other.
The top of supplementary mound 5 is provided with supplementary mound pedestal bolster subassembly, supplementary mound pedestal bolster subassembly upper end is provided with supplementary mound support subassembly, supplementary mound department crossbeam and prevents beam falling device 8-2, and supplementary mound support subassembly, supplementary mound department crossbeam prevent beam falling device 8-2 upper end links to each other with the supplementary mound position of prestressed concrete case roof beam 1.
The cable beam upper anchoring device 4 comprises a main beam upper concrete anchor block 4-1 and a main beam upper concrete anchoring beam 4-2, wherein the main beam upper concrete anchor block 4-1, the main beam upper concrete anchoring beam 4-2 and the prestressed concrete box beam 1 are fixedly connected, and the main beam upper concrete anchor block 4-1 provides an installation foundation for the stay cable 3.
The main pier 2-1 at the lower part of the bridge tower adopts a shuttle-shaped section with a horseshoe-shaped end part, and the main pier 2-1 at the lower part of the bridge tower is provided with a groove.
The double-tower column 2-2 at the upper part of the bridge tower adopts a horseshoe-shaped section, the whole double-tower column 2-2 at the upper part of the bridge tower transversely tilts outwards, and the double-tower column 2-2 at the upper part of the bridge tower longitudinally carries out section gradual change at a constant slope rate.
The transverse and longitudinal outer edge slope rates of the main pier 2-1 at the lower part of the bridge tower are consistent with the outer edge slope rates of the double-tower column 2-2 at the upper part of the bridge tower.
Specifically, the prestressed concrete box girder 1 is a single-box double-chamber variable-section prestressed concrete continuous box girder, two side webs of the prestressed concrete box girder 1 are obliquely arranged, and the girder bottom line of the prestressed concrete box girder 1 is a secondary parabola and a straight line.
Specifically, the reinforced concrete bridge tower 2 is of a reinforced concrete structure, and the reinforced concrete bridge tower 2 comprises a main pier 2-1 at the lower part of the bridge tower, a double-tower column 2-2 at the upper part of the bridge tower, a supporting cushion stone 2-3 at the top of the main pier, a transverse beam falling prevention pedestal 2-4 at the top of the main pier, a longitudinal damper pedestal 2-5 at the top of the main pier and a wire dividing pipe cable saddle 2-6.
The connection relation is described more specifically, a main pier top supporting cushion stone 2-3, a main pier top transverse beam falling prevention pedestal 2-4 and a main pier top longitudinal damper pedestal 2-5 are arranged on the top surface of the main pier 2-1 at the lower part of the bridge tower, and are respectively fixedly connected.
The bridge tower pedestal and bolster assembly comprises a main pier top supporting bolster 2-3, a main pier top transverse beam falling prevention pedestal 2-4 and a main pier top longitudinal damper pedestal 2-5.
Specifically, the prestressed concrete box girder 1 is provided with a bridge tower support assembly at the position of the reinforced concrete bridge tower 2, and the bridge tower support assembly comprises a fixed support 7-1, a transverse movable support 7-2, a longitudinal movable support 7-3 and a multidirectional movable support 7-4, and is arranged on a main pier top supporting cushion stone 2-3.
Specifically, the prestressed concrete box girder 1 is provided with a transverse girder falling prevention device 8-1 at the main pier at the position of the reinforced concrete bridge tower 2, and the lower end of the transverse girder falling prevention device 8-1 at the main pier is connected with a transverse girder falling prevention pedestal 2-4 at the top of the main pier.
Specifically, the prestressed concrete box girder 1 is provided with a longitudinal liquid viscous damper 9 at the position of the reinforced concrete bridge tower 2, and the lower end of the longitudinal liquid viscous damper 9 is connected with the main pier top longitudinal damper pedestal 2-5.
And a wire dividing pipe cable saddle 2-6 is arranged in the double-tower column 2-2 at the upper part of the bridge tower.
Specifically, the stay cable 3 is a monofilament-coated epoxy-coated steel strand stay cable.
Specifically, the stay cables 3 are combined into a harp-type cable surface.
As a connection instruction, the stay cable 3 is connected with a concrete anchor block 4-1 on the main girder on the prestressed concrete box girder 1, and penetrates through a wire dividing pipe cable saddle 2-6 on a double tower column 2-2 on the upper part of the bridge tower and is fixed with the double tower column.
Specifically, the auxiliary pier 5 adopts a reinforced concrete round-end pier, and an auxiliary pier supporting cushion stone 5-1 and an auxiliary pier transverse beam falling prevention pedestal 5-2 are arranged at the top of the auxiliary pier 5. The auxiliary pier supporting cushion stones 5-1 and the auxiliary pier transverse falling-preventing beam pedestals 5-2 form an auxiliary pier seat cushion Dan Zujian.
The auxiliary pier support assembly comprises a longitudinal movable support 7-3 and a multi-directional movable support 7-4, and the longitudinal movable support 7-3 and the multi-directional movable support 7-4 are arranged on the auxiliary pier support cushion stone 5-1.
Specifically, the prestressed concrete box girder 1 is provided with an auxiliary pier position beam falling prevention device 8-2 at the position of the auxiliary pier 5, and the auxiliary pier position beam falling prevention device 8-2 is arranged on the auxiliary pier transverse beam falling prevention pedestal 5-2.
Specifically, the side pier 6 adopts a reinforced concrete round end pier, and the top of the side pier 6 is provided with a side pier supporting cushion stone 6-1 and a side pier transverse beam falling prevention pedestal 6-2. The side pier supporting cushion stones 6-1 and the side pier transverse falling-preventing beam pedestal 6-2 form a side pier pedestal cushion stone assembly.
The side pier support assembly comprises a longitudinal movable support 7-3 and a multi-directional movable support 7-4, and the longitudinal movable support 7-3 and the multi-directional movable support 7-4 are arranged on a side pier supporting cushion stone 6-1.
Specifically, the prestressed concrete box girder 1 is provided with a beam falling prevention device 8-3 at the side pier 6, and the beam falling prevention device 8-3 at the side pier is arranged on a beam falling prevention pedestal 6-2 in the side pier transverse direction.
Specifically, the support 7 comprises a fixed support 7-1, a transverse movable support 7-2, a longitudinal movable support 7-3 and a multidirectional movable support 7-4.
The utility model adopts the 5-span type partial cable-stayed bridge with the auxiliary piers to replace the traditional 3-span type partial cable-stayed bridge, adopts the camber tower column and the harp type cable surface, has the advantages of high rigidity, high and low beam, good stress performance, high economy, good landscapes and the like, widens the applicability of the partial cable-stayed bridge to low longitudinal section bridge sites, and has wide application prospect in large-span bridges.
The auxiliary pier is arranged on the basis of the traditional three-span type partial cable-stayed bridge, auxiliary spans are added, the beam end corner can be effectively reduced, the structural rigidity is improved, the height of the main beam can be reduced, and the economy and the adaptability to low-longitudinal-section bridge sites are improved.
The auxiliary span is arranged, the stress of the side support is improved, systematic problems such as negative reaction force and the like of the side support caused by measures such as increasing the beam height, shortening the side span and the like of the traditional partial cable-stayed bridge for improving the beam end corner are avoided, and accordingly the side support is prevented from being provided with the tension support or the side span is prevented from being provided with the compression weight, and the safety of the bridge span structure is improved.
According to the utility model, the two tower columns transversely integrally incline outwards without arranging a cross beam, the horizontal component force of the tower column gravity is balanced by utilizing the horizontal component force of the inhaul cable inwards, the inhaul cable and the bridge tower are reasonably stressed in a coordinated manner, and the arrangement of the vertical surfaces of the cable surfaces adopts the harp type, so that the landscape of the bridge span structure is improved.
The utility model widens the applicability of the traditional concrete partial cable-stayed bridge to low longitudinal section bridge sites, has good economy, stress safety and landscape property, is simple and convenient to construct, and has wider application prospect in large-span bridges.

Claims (10)

1. The utility model provides an establish outer tower column harp type concrete part cable-stay bridge of supplementary mound, includes reinforced concrete bridge tower (2), side mound (6), its characterized in that: the reinforced concrete bridge tower (2) comprises a bridge tower lower portion main pier (2-1) for supporting, a bridge tower upper portion double-tower column (2-2) is fixedly arranged at the upper end of the bridge tower lower portion main pier (2-1), the bridge tower lower portion main pier (2-1) and the side pier (6) support the prestressed concrete box girder (1), an auxiliary pier (5) for supporting the prestressed concrete box girder (1) is further arranged at the lower end of the prestressed concrete box girder (1), and an anchor device (4) on a cable girder is arranged between the auxiliary pier (5) on the prestressed concrete box girder (1) and the bridge tower lower portion main pier (2-1).
2. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the bridge tower is characterized in that a wire-dividing pipe cable saddle (2-6) is arranged in the double-tower column (2-2) at the upper part of the bridge tower, and the wire-dividing pipe cable saddle (2-6) is symmetrically arranged in the double-tower column (2-2) at the upper part of the bridge tower.
3. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 2, wherein: stay cables (3) are arranged between the cable beam upper anchoring devices (4) and the wire-dividing pipe cable saddles (2-6).
4. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the top of main mound (2-1) of bridge tower lower part is provided with bridge tower abutment pad stone subassembly, bridge tower support subassembly is provided with on the bridge tower abutment pad stone subassembly, bridge tower support subassembly links to each other with the bridge tower position of prestressed concrete case roof beam (1).
5. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the top of side pier (6) is provided with side pier pedestal bolster subassembly, side pier pedestal bolster subassembly upper end is provided with side pier support subassembly and side pier department crossbeam and prevents roof beam device (8-3) that falls, pier support subassembly, side pier department crossbeam prevent that roof beam device (8-3) upper end links to each other with the side pier position of prestressed concrete case roof beam (1).
6. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the top of supplementary mound (5) is provided with supplementary mound pedestal filler subassembly, supplementary mound pedestal filler subassembly upper end is provided with supplementary mound support subassembly, supplementary mound department crossbeam and prevents roof beam device (8-2) that falls, and supplementary mound support subassembly, supplementary mound department crossbeam prevent that roof beam device (8-2) upper end links to each other with the supplementary mound position of prestressed concrete case roof beam (1).
7. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the cable beam upper anchoring device (4) comprises a main beam upper concrete anchor block (4-1) and a main beam upper concrete anchoring cross beam (4-2), wherein the main beam upper concrete anchor block (4-1) and the main beam upper concrete anchoring cross beam (4-2) are fixedly connected with the prestressed concrete box beam (1), and the main beam upper concrete anchor block (4-1) provides an installation foundation for the cable (3).
8. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the main pier (2-1) at the lower part of the bridge tower adopts a shuttle-shaped section with a horseshoe-shaped end part, and the pier body of the main pier (2-1) at the lower part of the bridge tower is provided with a groove.
9. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 1, wherein: the bridge tower upper double-tower column (2-2) adopts a horseshoe-shaped section, the whole bridge tower upper double-tower column (2-2) transversely tilts outwards, and the bridge tower upper double-tower column (2-2) longitudinally carries out section gradual change at a constant slope rate.
10. An lay-out pylon harp concrete partial cable-stayed bridge with auxiliary piers according to claim 9, wherein: the transverse and longitudinal outer edge slope rates of the main pier (2-1) at the lower part of the bridge tower are consistent with the outer edge slope rate of the double-tower column (2-2) at the upper part of the bridge tower.
CN202321155606.3U 2023-05-15 2023-05-15 Lay outer inclination column harp type concrete part cable-stayed bridge of auxiliary pier Active CN219886538U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321155606.3U CN219886538U (en) 2023-05-15 2023-05-15 Lay outer inclination column harp type concrete part cable-stayed bridge of auxiliary pier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321155606.3U CN219886538U (en) 2023-05-15 2023-05-15 Lay outer inclination column harp type concrete part cable-stayed bridge of auxiliary pier

Publications (1)

Publication Number Publication Date
CN219886538U true CN219886538U (en) 2023-10-24

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