CN114561878B - Arch rib lateral balance swivel construction method - Google Patents
Arch rib lateral balance swivel construction method Download PDFInfo
- Publication number
- CN114561878B CN114561878B CN202210401028.0A CN202210401028A CN114561878B CN 114561878 B CN114561878 B CN 114561878B CN 202210401028 A CN202210401028 A CN 202210401028A CN 114561878 B CN114561878 B CN 114561878B
- Authority
- CN
- China
- Prior art keywords
- arch
- counter
- pulling
- arch rib
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- E01D21/08—Methods or apparatus specially adapted for erecting or assembling bridges by rotational movement of the bridge or bridge sections
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a lateral balance swivel construction method of an arch rib, which comprises the steps of completing arch rib assembly on a short bracket, hinging two ends of the arch rib with an arch seat, arranging a counter-pulling system between the arch ribs at two sides, and arranging a counter-pulling system between each side of the arch rib and the short bracket; the opposite-pulling system enables the arch ribs on two sides to rotate inwards, and a certain opposite-pulling force is provided by the opposite-pulling system, so that the arch ribs on two sides are balanced, synchronous and even to be rotated to a design angle, and the arch rib installation precision and construction safety are ensured.
Description
Technical Field
The invention belongs to the technical field of bridge construction, relates to lateral swivel construction of arch ribs of an arch bridge, and in particular relates to a lateral balance swivel construction method of the arch ribs.
Background
The arch bridge arch rib type has the forms of parallel arch ribs, inward-inclined arch ribs (basket arch), outward-inclined arch ribs (butterfly arch) and the like.
The parallel arch rib and the basket arch are generally constructed by adopting a bracket method, a method of firstly arching and then vertically rotating a beam, horizontally splicing and vertically rotating the beam, a method of obliquely pulling and buckling, a three-section installation method, a method of vertically rotating and horizontally rotating, and the like, and the method mainly has the following problems:
(1) The arch rib and the bridge system cannot be constructed synchronously, so that the construction progress is affected;
(2) High-altitude work load is high, so that construction risk is high;
(3) The investment of the required bracket, the buckling tower, the rope tower, the hoisting equipment and the like is large, so that the construction cost is high.
The camber arch rib is generally not provided with a wind brace, and during construction, a vertical rotation process and a diagonal buckling and hanging process cannot be adopted because the transverse component forces of a vertical rotation cable and a diagonal buckling and hanging cable cannot be balanced, and a bracket method can be generally only adopted, because the camber arch rib has the risk of outward torsion and overturning, an anti-overturning bracket is required to be arranged between arch rib sections, and the bracket cost is further increased.
To solve the above problems, chinese patent CN112647406a discloses a device for erecting and constructing a lateral rotator of an arch rib, and CN112647415A discloses a cable pulling system for providing lateral rotator of an arch rib and a construction method thereof. The idea of the technical scheme is to assemble arch ribs on short brackets at two sides of a bridge, two ends of each arch rib are respectively hinged with an arch seat, steel strands are arranged between the two arch ribs to serve as opposite inhaul cables, two ends of each inhaul cable are synchronously tensioned through jacks respectively, and the two arch ribs are pushed to rotate relatively towards the inner side of the bridge, so that lateral rotation of the arch ribs is realized.
The side turning construction of the arch rib can realize synchronous construction of the bridge system and the arch rib, and can reduce the investment of the bracket and the risk of high-altitude construction. However, the above scheme has the following problems in specific application:
1. the symmetrical rotation of the arch rib is not easy to realize. Because the arch ribs on the two sides are possibly different in weight and friction coefficient of the arch hinge, the arch ribs on the two sides can not synchronously rotate when the rotator is oppositely pulled; when the side rotation angles of the arch ribs at the two sides are inconsistent, the scheme cannot be adjusted.
2. The tensioning jack is arranged outside or inside the arch rib, so that the structure of the arch rib can be damaged. The jack is arranged in the arch rib, an operation hole is required to be formed in the arch rib wall plate, the arch rib structure can be destroyed fatally, and the jack is not feasible in construction; the jack is arranged on the outer side of the arch rib, and the jack directly pushes the arch rib, so that the arch rib can be deformed; moreover, the steel strands in the two modes pass through the arch rib, and the arch rib structure can be damaged due to the fact that through holes are formed in the arch rib.
3. There is a great potential safety hazard. The opposite-pulling steel stranded wires are connected with the tensioning jack by bypassing the steering wheel, the curvature of the steel stranded wires is larger at the initial side-turning position, the stress of each steel wire of the steel stranded wires is inconsistent, and the steel stranded wires are easy to break, so that safety accidents are caused; at the turning position of the steering wheel, the linear displacement of each strand of steel wire actually has slight difference, each strand of steel wire can slide and rattle mutually, and the steel strand wires can bounce at the position of entering and exiting the steering wheel, so that the phenomenon can cause adverse effect on construction safety.
4. The installation accuracy of the arch rib cannot be accurately adjusted. When two arch ribs rotate to be parallel or incline inwards, in order to avoid that the arch ribs automatically rotate inwards due to dead weight, the telescopic cross brace is arranged between the two arch ribs, but the cross brace can only adjust the relative positions of the two arch ribs, namely the distance between the two arch ribs, but cannot adjust the absolute design position of each arch rib, so that the installation accuracy of the arch ribs cannot be accurately adjusted, and after the arch ribs are installed and positioned, if the inclination angle error exceeds a certain range, the installation accuracy of the arch ribs can cause great safety risk.
5. The scheme can only be used for steel box arches, but cannot be used for steel pipe arches and steel truss arches, and the application range is limited.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a lateral balance swivel construction method for an arch rib.
The technical scheme of the invention is as follows:
a method for constructing a lateral balance swivel of an arch rib is characterized by comprising the following steps:
(1) Short brackets are erected on two sides of the bridge, arch rib assembly is completed on the short brackets, and arch feet at two ends of each arch rib are hinged with the arch base;
(2) A pair pulling system is arranged between the ribs on two sides: the opposite-pulling system comprises a plurality of pairs of opposite-pulling lug plates which are longitudinally distributed along the arch ribs and welded on the two arch ribs, each pair of opposite-pulling lug plates is connected with a rotating bracket, the rotating bracket comprises two connecting plates which are parallel to the opposite-pulling lug plates, one ends of the two connecting plates are respectively and rotatably connected with the two opposite-pulling lug plates through pin shafts, and a counter-force plate is welded between the other ends of the two connecting plates; one or two pairs of inhaul cables are connected between the counter-force plates of the two opposite rotating brackets between the two arch ribs, one end of each pair of inhaul cables is anchored with the counter-force plate on one side arch rib, the other end of each pair of inhaul cables penetrates through the counter-force plate on the other side arch rib and is connected with a tensioning jack, the base of the jack is supported on the counter-force plate, and the axle center of the jack is perpendicular to the plate surface of the counter-force plate;
(3) And a counter-pulling system is arranged between the arch rib and the short support: the back-pulling system comprises a plurality of back-pulling lug plates which are longitudinally distributed along the arch ribs and welded on the two arch ribs, and a plurality of windlass which are fixed on the short support, wherein the windlass and the back-pulling lug plates are arranged in one-to-one correspondence, and each windlass is connected with a back-pulling rope between one back-pulling lug plate;
(4) Synchronously starting the jacks to stretch the opposite inhaul cable, and synchronously releasing the inhaul cable by the windlass at two sides to enable the two arch ribs to inwards rotate; in the arch rib turning process, the stroke and the pressure of each jack are synchronously controlled by a synchronous hydraulic control technology, arch rib corner data are collected by a laser ranging sensor, and counter-pulling cables are respectively controlled to provide certain counter-pulling force by controlling winches at two sides, so that the arch ribs at two sides reach consistent corners;
(5) After the arch rib is laterally rotated in place, the hinged positions of the arch rib arch springing and the arch base are connected and welded to form a hingeless arch, arch springing concrete is sealed, then a suspender is installed, the opposite stay rope and the opposite stay rope are gradually and stepwise loosened, and the support is removed, so that the arch rib lateral rotation construction is completed.
The invention is summarized by the applicant according to construction experience and repeated experiments, has strong practicability and operability, simple structure, high arch rib positioning precision, good safety and low construction cost. Compared with the prior art, the method has the following advantages:
1. the opposite-pulling system and the opposite-pulling system are matched, so that the arch ribs on two sides can be balanced and synchronously rotated;
2. the opposite-pulling system is arranged above the inner side of the arch rib, and in the arch rib side rotation process, the rotating support can always ensure that the jack and the steel strand are in a horizontal state along with the change of the inclination angle of the arch rib, the steel strand is not bent, the stress is uniform, and the safety is high.
3. The jack is in non-contact with the arch rib, so that damage to the arch rib structure can be avoided.
4. The angle of each arch rib can be controlled and adjusted respectively through the counter-pulling system, so that the arch rib installation accuracy is ensured.
5. The device is applicable to a wide range, and can be applicable to various arch rib forms such as parallel type, inward inclined type, outward inclined type and the like; the jack is not supported on the arch rib, so the jack can be suitable for various arch rib structures such as steel box arches, steel pipe arches, steel truss arches and the like.
Drawings
FIG. 1 is a schematic view of the transverse bridge direction structure of an arch rib after assembly on a short bracket;
FIG. 2 is a schematic plan view of the rib after assembly on the short brackets;
FIG. 3 is a schematic view of the present invention in a cross-bridge orientation during rib side-turning;
fig. 4 is a schematic view of the present invention in the forward direction of the bridge on the side where the jack is located during the rib side turning.
Detailed Description
As shown in fig. 1 and 2, short brackets 2 are erected on two sides of the bridge, the assembly of arch ribs 1 is completed on the short brackets, and two ends of each arch rib are respectively hinged with an arch base 3.
The short support can reduce the material consumption of the support, save the cost, reduce the overhead work load when the support is assembled, and ensure the construction safety. Meanwhile, in order to ensure that the arch rib can realize rotation when pulling up, the arch rib has a certain inclination angle. Through experiments, the opposite pulling rotating body can be realized when the inclination angle of the arch rib is larger than 5 degrees. Therefore, when the invention is implemented, the height of the short bracket can be set to be 5-10 degrees after the arch rib is assembled, and the height of the short bracket is reduced as much as possible on the premise of ensuring smooth implementation of the arch rib side rotation.
After the arch ribs are assembled, a counter-pulling system is arranged between the arch ribs at two sides, and a counter-pulling system is arranged between each arch rib and the short bracket.
The opposite-pulling system comprises a plurality of pairs of opposite-pulling lug plates 4 which are longitudinally distributed along the arch ribs and welded on the two arch ribs 1, each pair of opposite-pulling lug plates is connected with a rotating bracket 5, the rotating bracket comprises two connecting plates 51 which are parallel to the opposite-pulling lug plates, one ends of the two connecting plates are respectively and rotatably connected with the two opposite-pulling lug plates through pin shafts, and a counter-force plate 52 is welded between the other ends of the two connecting plates; one or two pairs of inhaul cables 6 are connected between counter-force plates of two opposite rotating brackets between two arch ribs, the pair of inhaul cables adopt steel strands, one end of each pair of inhaul cables 7 is anchored with the counter-force plate of the rotating bracket on one side arch rib, the other end of each pair of inhaul cables passes through the counter-force plate of the rotating bracket on the other side arch rib and is connected with a tensioning jack, a base of the jack is supported on the counter-force plate, the front end of the jack faces the outer side of the bridge, and the axle center of the jack is perpendicular to the plate surface of the counter-force plate;
the back-pulling system comprises a plurality of back-pulling lug plates 8 which are longitudinally distributed along the arch ribs and welded on the two arch ribs, and a plurality of windlass 9 which are fixed on the short support, wherein the windlass and the back-pulling lug plates are arranged in one-to-one correspondence, and each windlass is connected with a back-pulling rope 10 with one back-pulling lug plate. The back-stay cable should be wound on the winch drum for a sufficient length to ensure that the cable is correspondingly released along with the rising of the arch rib during the opposite-pull construction.
The opposite pulling lug plates and the opposite pulling lug plates are symmetrically arranged on the arch rib. In one embodiment of the invention, 3 pairs of lug plates are welded to each rib, one pair being welded inside the bridge of the rib and the other pair being welded between the arch and the legs, respectively. Correspondingly, 3 counter-pulling lugs are welded on each arch rib, one lug is welded on the outer side of a vault bridge of the arch rib, and the other two lugs are respectively welded between the vault and the two vaults.
As shown in fig. 3 and 4, the jacks are synchronously started to stretch the opposite guy ropes 6, and the winches at the two sides synchronously unwind the guy ropes and provide certain counter-pulling force, so that the two arch ribs simultaneously rotate inwards.
Because errors exist in the design and installation processes, the weight of arch ribs on two sides is possibly unequal and the friction coefficients of arch hinges are different, so that the arch ribs on two sides are not synchronous when being oppositely pulled, the stroke and the pressure of each jack are synchronously controlled through a synchronous hydraulic control technology in the arch rib rotation process, arch rib corner data are collected through a laser ranging sensor, when the rotation of two sides is not synchronous, difference compensation is carried out by adjusting the counter pulling force of counter pulling ropes on two sides, and the two arch ribs are synchronous and uniformly rotated, so that the corner consistency is maintained.
The camber arch rib and the arch rib are balanced by the dead weight of the arch rib and the inhaul cable in the camber state. When the inconformity of the angles of the two arch ribs is detected, the counter-pulling force of the counter-pulling cable of the arch rib on the side with the larger angle of rotation is increased, and meanwhile, the counter-pulling force of the counter-pulling cable of the arch rib on the side with the smaller angle of rotation is loosened or reduced, and the counter-pulling is continued to enable the inclination angles of the arch ribs on the two sides to be consistent.
For the parallel arch ribs, when the arch ribs reach a vertical state, the tension force of the opposite guy cables and the counter-tension force of the counter-guy cables are balanced, so that the arch ribs are kept in the vertical state;
when the arch rib rotates to an inward tilting state, the arch rib on two sides is respectively adjusted to a design angle by loosening or tightening the opposite stay cables on two sides.
After the arch rib is laterally turned in place, connecting and welding the arch rib at the arch hinge to form a hingeless arch, sealing the arch foot concrete, then installing a suspender, gradually and gradually loosening the opposite stay rope and reversely pulling the balance rope, and dismantling the bracket to finish the arch rib laterally turning construction.
Claims (4)
1. A method for constructing a lateral balance swivel of an arch rib is characterized by comprising the following steps:
(1) Short brackets are erected on two sides of the bridge, arch rib assembly is completed on the short brackets, and arch feet at two ends of each arch rib are hinged with the arch base;
(2) A pair pulling system is arranged between the ribs on two sides: the opposite-pulling system comprises a plurality of pairs of opposite-pulling lug plates which are longitudinally distributed along the arch ribs and welded on the two arch ribs, each pair of opposite-pulling lug plates is connected with a rotating bracket, the rotating bracket comprises two connecting plates which are parallel to the opposite-pulling lug plates, one ends of the two connecting plates are respectively and rotatably connected with the two opposite-pulling lug plates through pin shafts, and a counter-force plate is welded between the other ends of the two connecting plates; one or two pairs of inhaul cables are connected between the counter-force plates of the two opposite rotating brackets between the two arch ribs, one end of each pair of inhaul cables is anchored with the counter-force plate on one side arch rib, the other end of each pair of inhaul cables penetrates through the counter-force plate on the other side arch rib and is connected with a tensioning jack, the base of the jack is supported on the counter-force plate, and the axle center of the jack is perpendicular to the plate surface of the counter-force plate;
(3) And a counter-pulling system is arranged between the arch rib and the short support: the back-pulling system comprises a plurality of back-pulling lug plates which are longitudinally distributed along the arch ribs and welded on the two arch ribs, and a plurality of windlass which are fixed on the short support, wherein the windlass and the back-pulling lug plates are arranged in one-to-one correspondence, and each windlass is connected with a back-pulling rope between one back-pulling lug plate;
(4) Synchronously starting the jacks to stretch the opposite inhaul cable, synchronously releasing the inhaul cable by the windlass at two sides and providing certain counter-pulling force to enable the two arch ribs to inwards swivel; in the arch rib turning process, the stroke and the pressure of each jack are synchronously controlled by a synchronous hydraulic control technology, arch rib corner data are collected by a laser ranging sensor, and counter pulling forces of counter pulling cables at two sides are respectively controlled to synchronously turn the arch ribs at two sides, so that the corners are consistent;
(5) After the arch rib is laterally rotated in place, the hinged positions of the arch rib arch springing and the arch base are connected and welded to form a hingeless arch, arch springing concrete is sealed, then a suspender is installed, the opposite stay rope and the opposite stay rope are gradually and stepwise loosened, and the support is removed, so that the arch rib lateral rotation construction is completed.
2. The arch rib lateral balancing swivel construction method of claim 1, wherein: the inclination angle of the arch rib after the assembly on the short bracket is 5-10 degrees.
3. The arch rib lateral balancing swivel construction method of claim 1, wherein: when the opposite-pulling system is arranged, 3 pairs of opposite-pulling lug plates are welded on each arch rib, wherein one pair of plates is welded on the inner side of the arch crown of the arch rib, and the other two pairs of plates are respectively welded between the arch crown and the two arch legs; when the counter-pulling system is arranged, 3 counter-pulling lug plates are welded on each arch rib, one of the counter-pulling lug plates is welded on the outer side of the vault of the arch rib, and the other two counter-pulling lug plates are respectively welded between the vault and the two arch legs.
4. The arch rib lateral balance swivel construction method according to claim 1, wherein in the step (4), the rotation angle control mode of the counter stay cable to the arch rib is as follows:
when the camber angles of the camber ribs are not consistent, the counter-pulling force of the counter-pulling cable of the camber rib on the side with larger camber angle is increased, and the counter-pulling force of the counter-pulling cable of the camber rib on the side with smaller camber angle is reduced, so that the dip angles of the camber ribs on two sides are consistent;
for the parallel arch ribs, when the arch ribs reach a vertical state, the tension force of the opposite guy cables and the counter-tension force of the counter-guy cables are balanced, so that the arch ribs are kept in the vertical state;
for the inward tilting arch rib, when the arch rib rotates to an inward tilting state, the arch rib at two sides is respectively adjusted to a design angle by respectively loosening or tightening the back stay cables at two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210401028.0A CN114561878B (en) | 2022-04-18 | 2022-04-18 | Arch rib lateral balance swivel construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210401028.0A CN114561878B (en) | 2022-04-18 | 2022-04-18 | Arch rib lateral balance swivel construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114561878A CN114561878A (en) | 2022-05-31 |
| CN114561878B true CN114561878B (en) | 2023-09-05 |
Family
ID=81721454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210401028.0A Active CN114561878B (en) | 2022-04-18 | 2022-04-18 | Arch rib lateral balance swivel construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114561878B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116479785A (en) * | 2023-03-12 | 2023-07-25 | 中交路桥建设有限公司 | Mountain area large-span arch rib stair-step swivel mounting construction method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0003085D0 (en) * | 2000-02-10 | 2000-03-29 | Peter Dann Limited | Arch structure |
| JP2003027428A (en) * | 2001-07-18 | 2003-01-29 | Sumitomo Constr Co Ltd | Method for constructing arch rib |
| JP2003049409A (en) * | 2001-08-06 | 2003-02-21 | Sumitomo Constr Co Ltd | Arch rib erection method |
| JP2003321805A (en) * | 2002-05-02 | 2003-11-14 | Sumitomo Mitsui Construction Co Ltd | Method for building arch bridge and bearing for arch bridge |
| CN204589825U (en) * | 2014-12-15 | 2015-08-26 | 武汉市市政建设集团有限公司 | Cable stayed bridge steel arch tower bivector traction vertical transfer construction equipment |
| CN111576227A (en) * | 2020-05-22 | 2020-08-25 | 广西路桥工程集团有限公司 | Construction method of main arch and auxiliary arch of double-flying-wing arch bridge and lifting appliance used by same |
| WO2020221944A1 (en) * | 2019-04-29 | 2020-11-05 | Gestion Y Actividades Secozam, Sl | Tool for dismounting travellers for concreting large arches of viaducts |
| CN112647428A (en) * | 2021-02-22 | 2021-04-13 | 福州大学 | Construction method for installing arch rib cantilever and oppositely pulling erection |
| CN113202030A (en) * | 2021-04-16 | 2021-08-03 | 中铁大桥局集团有限公司 | Installation system and installation method suitable for arch rib |
| CN215925689U (en) * | 2021-08-23 | 2022-03-01 | 中交路桥建设有限公司 | Arch bridge steel pipe arch rib installing support |
-
2022
- 2022-04-18 CN CN202210401028.0A patent/CN114561878B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0003085D0 (en) * | 2000-02-10 | 2000-03-29 | Peter Dann Limited | Arch structure |
| JP2003027428A (en) * | 2001-07-18 | 2003-01-29 | Sumitomo Constr Co Ltd | Method for constructing arch rib |
| JP2003049409A (en) * | 2001-08-06 | 2003-02-21 | Sumitomo Constr Co Ltd | Arch rib erection method |
| JP2003321805A (en) * | 2002-05-02 | 2003-11-14 | Sumitomo Mitsui Construction Co Ltd | Method for building arch bridge and bearing for arch bridge |
| CN204589825U (en) * | 2014-12-15 | 2015-08-26 | 武汉市市政建设集团有限公司 | Cable stayed bridge steel arch tower bivector traction vertical transfer construction equipment |
| WO2020221944A1 (en) * | 2019-04-29 | 2020-11-05 | Gestion Y Actividades Secozam, Sl | Tool for dismounting travellers for concreting large arches of viaducts |
| CN111576227A (en) * | 2020-05-22 | 2020-08-25 | 广西路桥工程集团有限公司 | Construction method of main arch and auxiliary arch of double-flying-wing arch bridge and lifting appliance used by same |
| CN112647428A (en) * | 2021-02-22 | 2021-04-13 | 福州大学 | Construction method for installing arch rib cantilever and oppositely pulling erection |
| CN113202030A (en) * | 2021-04-16 | 2021-08-03 | 中铁大桥局集团有限公司 | Installation system and installation method suitable for arch rib |
| CN215925689U (en) * | 2021-08-23 | 2022-03-01 | 中交路桥建设有限公司 | Arch bridge steel pipe arch rib installing support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114561878A (en) | 2022-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021052142A1 (en) | Cable-supported large-span structure and construction method therefor | |
| CN102146660A (en) | Installation methods of cross-arch-rib gantry crane and butterfly arch bridge space structure system | |
| WO2011146773A2 (en) | Folding tower | |
| CN114561878B (en) | Arch rib lateral balance swivel construction method | |
| CN210658022U (en) | A one-way perpendicular commentaries on classics device for oblique steel tower of single limb | |
| CN113175089A (en) | Construction method of large-span heavy cantilever truss | |
| CN111576227A (en) | Construction method of main arch and auxiliary arch of double-flying-wing arch bridge and lifting appliance used by same | |
| CN217174399U (en) | Arch rib lateral balance turning system | |
| CN114319070B (en) | Cable-stayed bridge with single-column type inclined tower structure | |
| CN111676828B (en) | Contra-rotating construction device and contra-rotating construction method for upright steel arch cable-stayed bridge | |
| CN112647428B (en) | Construction method for installing arch rib cantilever and oppositely pulling erection | |
| CN211369036U (en) | Arch net rack node ball rotation fixing device and arch net rack mounting system | |
| CN113585101A (en) | Vertical rotation construction structure and construction method for space curved surface special-shaped steel tower | |
| CN207513201U (en) | A kind of roofing cornices installation mobile device | |
| CN113356556A (en) | Steel structure-based counterweight-free hanging basket installation method | |
| CN111778875A (en) | Roller type supporting leg, bridge turning system and construction method | |
| JP3532161B2 (en) | Tower construction machine and tower construction method | |
| CN2483472Y (en) | Tower crame and able to be used for distributing concrete having its motion and horizontal beam | |
| CN221216811U (en) | Prefabricated box girder protection lifting appliance | |
| CN117023416B (en) | Tower crane wall-attached supporting platform equipment and application method thereof | |
| US20210331900A1 (en) | Roof-Mounted Building Access System | |
| CN214573256U (en) | Arch rib side turning opposite pulling erecting device | |
| CN110820564B (en) | Liftable and openable bent cap construction overhaul multipurpose platform | |
| WO2024187641A1 (en) | Segment-by-segment rotation installation construction method for long-span arch rib in mountainous area | |
| WO2023178638A1 (en) | Pile frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |