CN114182633A - Suspension bridge catwalk whole span frame management method - Google Patents
Suspension bridge catwalk whole span frame management method Download PDFInfo
- Publication number
- CN114182633A CN114182633A CN202111234581.1A CN202111234581A CN114182633A CN 114182633 A CN114182633 A CN 114182633A CN 202111234581 A CN202111234581 A CN 202111234581A CN 114182633 A CN114182633 A CN 114182633A
- Authority
- CN
- China
- Prior art keywords
- catwalk
- gantry
- catwalks
- bridge
- winch
- 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.)
- Granted
Links
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a whole span frame construction method for a suspension bridge catwalk, which comprises the steps of respectively connecting one end of each prefabricated two sections of catwalks to a winch on the corresponding span bridge side; respectively connecting the lifting hook of the portal frame of the tower top with the other end, far away from the winch, of the catwalk on the overpass at the corresponding side; pulling the gantry lifting hook, thereby pulling the catwalk connected with the gantry lifting hook, enabling the catwalks to move towards the midspan and midspan respectively, and connecting the floating crane with one ends of the two catwalks when the ends of the two catwalks, which are far away from the corresponding side windlass, move to the vicinity of the floating crane; connecting one ends of the two catwalks connected with the winch to gantry lifting hooks on the tower top gantries on the corresponding sides, and pulling the catwalks to be lifted; when the catwalk is connected to one end of the corresponding side portal lifting hook and lifted to the tower top pre-anchoring position, the end of the catwalk is connected with the tower top pre-embedded anchoring system. The erection method is simple and efficient, and the catwalk can be erected at the highest speed.
Description
Technical Field
The invention relates to the field of suspension bridge catwalk erection. More particularly, the invention relates to a suspension bridge catwalk whole span frame.
Background
In the construction of the suspension bridge, the catwalk is used as the most important temporary structure in the construction of the upper structure of the suspension bridge and provides an operation platform for erecting a main cable and hoisting a stiffening beam. However, the current suspension bridge catwalk construction operation procedures are various and comprise pilot cable erection, catwalk single-line reciprocating traction system formation, bearing cable erection, catwalk surface construction, portal system construction and the like. The catwalk erection work period is long, two months are less, half a year is more, and workers are required to frequently work at one or two hundred meters high altitude in the construction process, so that the danger degree is extremely high.
Aiming at the problems of various working procedures, long construction period, high operation risk and the like of the existing suspension bridge catwalk erection technology, a catwalk one-span integral frame which has less working procedures, high erection speed and less times of high-altitude operation needs to be developed urgently.
Disclosure of Invention
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a suspension bridge catwalk spanning frame contrivance including:
step one, arranging a tower top portal frame and a winch on two bridge-spanning sides respectively, and prefabricating two sections of catwalks on the two bridge-spanning sides respectively;
step two, respectively connecting one end of each prefabricated catwalk section to a corresponding winch on the bridge-spanning side;
step three, respectively connecting the tower top portal frame with the other end, far away from the winch, of the catwalk on the corresponding side bridge;
pulling the gantry lifting hook by pulling a steel wire rope on the gantry on the tower top, so as to pull the catwalk connected with the gantry lifting hook and make the catwalk move towards the midspan and the midspan respectively;
the floating crane is arranged in advance at the midspan and midspan position;
fifthly, when one ends of the two catwalks, far away from the corresponding side windlass, move to the position near the floating crane, and the ends of the two catwalks are connected by means of the floating crane lifting hooks;
connecting the two catwalks to one end of the winch, respectively converting the catwalks into gantry lifting hooks connected to the gantry on the corresponding side, and lifting the gantry lifting hooks by pulling the gantry lifting hooks so as to drive one ends of the catwalks connected to the gantry lifting hooks on the corresponding sides to be lifted;
seventhly, when one end of the catwalk, which is connected to the corresponding side portal lifting hook, is lifted to a tower top pre-anchoring position, connecting the end of the catwalk with a tower top pre-embedded anchoring system, and canceling the connection between the floating crane lifting hook and the catwalk;
according to a preferred embodiment of the present invention, in the whole span structure of the suspension bridge catwalk, after the seventh step, the floating crane is cancelled.
According to a preferred embodiment of the present invention, in the whole span structure of the suspension bridge catwalk, in step four, the moving speeds of the two segments of catwalks to the midspan are consistent.
According to a preferred embodiment of the invention, in the whole span structure of the suspension bridge catwalk, steel anchor beams are respectively arranged at two ends of the catwalk, and two ends of the catwalk are respectively connected to the winch and the gantry hook through the steel anchor beams.
According to a preferred embodiment of the present invention, the whole span structure of the suspension bridge catwalk further comprises,
and step eight, connecting the uniform ends of the two previously prefabricated side catwalks to one end of the top pre-anchoring system of the catwalk, and connecting the other end of the catwalk to the winch on the corresponding side.
According to a preferred embodiment of the present invention, in the whole span structure of the suspension bridge catwalk, two sections of catwalks are prefabricated on two sides of the span bridge, specifically:
and paving battens on the ground on the two bridge sides at intervals, and performing catwalk prefabrication and forming operation on the battens.
According to a preferred embodiment of the present invention, the whole span frame of the suspension bridge catwalk is designed, and the length of each catwalk section is half of the length of the middle span of the bridge.
According to a preferred embodiment of the invention, in the whole span structure of the suspension bridge catwalk, the catwalk is provided with the bearing ropes and the handrail ropes, and the bearing ropes and the handrail ropes at two ends of the catwalk are fixed on the steel anchor beams.
According to a preferred embodiment of the present invention, in the method for erecting the span of the suspension bridge catwalk, in the fourth step, the following operations are performed while pulling the gantry hook, and thus the catwalk connected to the gantry hook:
and starting a winch of the corresponding side span bridge, reversely pulling the catwalk, wherein the reverse pulling force of the winch is smaller than the pulling force of the tower top portal frame, so that the catwalk moves towards the midspan span respectively.
According to a preferred embodiment of the invention, the whole span structure of the suspension bridge catwalk is designed to keep the pulling speed of the catwalk within a preset range during the process of pulling the catwalk.
Compared with the conventional catwalk construction method, the method has the following characteristics:
(1) the erection method is simple and efficient, and the catwalk can be erected at the highest speed;
(2) the catwalk is integrally prefabricated on the ground, so that the construction quality is fully guaranteed, and the overhead working capacity of personnel is reduced;
(3) after the catwalk is prefabricated, the catwalk is integrally hoisted, the erection speed is high, and the construction period is saved to the maximum extent;
(4) the existing winch, floating crane and gantry hoisting equipment in a construction site are fully utilized, and the time of occupying a channel is short.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the construction structure of step two and step three in the present invention.
FIG. 2 is a schematic diagram of the construction structure of step four in the present invention.
FIG. 3 is a schematic view of the construction structure of step five in the present invention.
FIG. 4 is a schematic diagram of the construction structure of step six in the present invention.
FIG. 5 is a schematic diagram of a seventh construction step in the present invention.
FIG. 6 is a schematic diagram of the construction in step eight of the present invention.
Fig. 7 is a schematic structural view of the connection between the steel anchor beam at one end of the catwalk and the winch in the invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1 to 7, a preferred embodiment of the present invention provides a suspension bridge catwalk spanning frame structure comprising:
step one, arranging a tower top portal frame and a winch on two bridge-spanning sides respectively, and prefabricating two sections of catwalks on the two bridge-spanning sides respectively; that is, there are 2 tower top gantries including a tower top gantry A1 and a tower top gantry B2, the tower top gantries are all arranged on the tower, the tower top gantry A1 is erected on the tower A9, the tower top gantry B2 is erected on the tower B10, catwalks A3 and catwalk B4 are respectively arranged at two ends corresponding to the sides of the tower top gantry A1 and the tower top gantry B2, there are 2 windlasses including a windlass a5 and a windlass B6,
step two, respectively connecting one end of each prefabricated catwalk section to a corresponding winch on the bridge-spanning side; that is, one end of the catwalk A3 is connected to the hoist A5, one end of the catwalk B4 is connected to the hoist B6,
step three, respectively connecting the tower top portal frame with the other end, far away from the winch, of the catwalk on the corresponding side bridge; namely, a gantry lifting hook on the gantry A1 on the tower top is connected with the other end, far away from the winch A5, of the catwalk A3; and the gantry lifting hook on the tower top gantry B2 is connected with the other end of the catwalk B4 far away from the winch B6.
Pulling the gantry lifting hook by pulling a steel wire rope on the gantry on the tower top, so as to pull the catwalk connected with the gantry lifting hook and make the catwalk move towards the midspan and the midspan respectively; that is, the catwalk A3 and the catwalk B4 are caused to move toward the midspan, respectively.
And the floating crane 7 is arranged in advance at the midspan and midspan position;
step five, when one ends of the two catwalks far away from the corresponding side windlass move to the position near the floating crane, connecting the floating crane lifting hooks 15 with the ends of the two catwalks; that is, when the catwalk A3 and the catwalk B4 move to the vicinity of the floating crane 7 away from the end of the corresponding side hoist, the end of the catwalk A3 and the catwalk B4 is connected to the floating crane hook 15, and the floating crane hook 15 is provided on the floating crane 7.
Connecting the two catwalks to one end of the winch, respectively converting the catwalks into gantry lifting hooks connected to the gantry on the corresponding side, and lifting the gantry lifting hooks by pulling the gantry lifting hooks so as to drive one ends of the catwalks connected to the gantry lifting hooks on the corresponding sides to be lifted;
seventhly, when one end of the catwalk connected to the corresponding side portal lifting hook is lifted to a tower top pre-anchoring position, namely, when one end of the catwalk A3 and one end of the catwalk B4 connected to the corresponding side portal lifting hook are lifted to the tower top pre-anchoring position, the ends of the catwalk A3 and the catwalk B4 are respectively connected with the tower top pre-embedded anchoring system 8, the connection of the floating crane 7 and the catwalk A3 and the catwalk B4 is cancelled, and the catwalk A3 and the catwalk B4 are far away from one end connected with the corresponding side winch; the floating crane 7 is cancelled.
In order to ensure that the two sections of catwalks can realize synchronous movement and complete symmetrical erection in the later period, in the fourth step, the speeds of the two sections of catwalks moving towards the midspan and the midspan are consistent.
In order to facilitate the catwalk to be pulled, the two ends of the catwalk are respectively and fixedly connected with steel anchor beams, and the two ends of the catwalk are respectively connected with the winch and the gantry lifting hook through the steel anchor beams.
Further, the whole span frame of the suspension bridge catwalk further comprises,
and step eight, connecting the uniform ends of the two previously prefabricated side catwalks to one end of the top pre-anchoring system of the catwalk, and connecting the other end of the catwalk to the winch on the corresponding side.
In addition, in view of construction convenience, it is preferable to prefabricate the catwalk on site, where the two catwalks are prefabricated on two sides of the bridge, specifically: and paving battens 14 on the ground on the two sides of the bridge at intervals, and performing catwalk prefabrication and forming operation on the battens 14, wherein the purpose of paving the battens is to facilitate the construction of the catwalk prefabrication and forming, and the catwalk is abraded in the traction process.
Specifically, the length of each catwalk section is half of the length of the midspan of the bridge.
Preferably, the catwalk is provided with a bearing cable and a handrail cable, and the bearing cable and the handrail cable at two ends of the catwalk are fixed on the steel anchor beam 13. In particular to a catwalk A3 with two ends respectively provided with a bearing cable 11 and a handrail cable 12,
in another embodiment, the whole span structure of the suspension bridge catwalk is managed by the following steps, in the fourth step, while pulling the gantry hook, and thus pulling the catwalk connected to the gantry hook:
and starting a winch of the corresponding side span bridge, reversely pulling the catwalk, wherein the reverse pulling force of the winch is smaller than the pulling force of the tower top portal frame, so that the catwalk moves towards the midspan span respectively. That is, the winch A5 is started to pull the catwalk A3 reversely, and the reverse pulling force of the winch A5 is smaller than the pulling force of the tower top portal a1, so that the catwalk A3 moves toward the midspan; and starting the winch B6 to pull the catwalk B4 reversely, wherein the reverse pulling force of the winch B6 is smaller than the pulling force of the tower top gantry B2, so that the catwalk B4 moves towards the midspan.
Therefore, the catwalk is kept to have a certain tension force in the pulling process, and the line shape is consistent with the designed construction line shape.
In another embodiment, the whole span frame of the suspension bridge catwalk is designed to keep the pulling speed of the catwalk within a preset range during the process of pulling the catwalk.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A suspension bridge catwalk whole span frame is managed, characterized by comprising:
step one, arranging a tower top portal frame and a winch on two bridge-spanning sides respectively, and prefabricating two sections of catwalks on the two bridge-spanning sides respectively;
step two, respectively connecting one end of each prefabricated catwalk section to a corresponding winch on the bridge-spanning side;
step three, respectively connecting a gantry lifting hook of the gantry on the tower top with the other end, far away from the winch, of the catwalk on the bridge on the corresponding side;
pulling the gantry lifting hook by pulling a steel wire rope on the gantry on the tower top, so as to pull the catwalk connected with the gantry lifting hook and make the catwalk move towards the midspan and the midspan respectively; the floating crane is arranged in advance at the midspan and midspan position;
fifthly, when one ends of the two catwalks, far away from the corresponding side windlass, move to the position near the floating crane, and the ends of the two catwalks are connected by means of the floating crane lifting hooks;
connecting the two catwalks to one end of the winch, respectively converting the catwalks into gantry lifting hooks connected to the gantry on the corresponding side, and lifting the gantry lifting hooks by pulling the gantry lifting hooks so as to drive one ends of the catwalks connected to the gantry lifting hooks on the corresponding sides to be lifted;
and seventhly, when one end of the catwalk, which is connected to the corresponding side portal lifting hook, is lifted to the tower top pre-anchoring position, the end of the catwalk is connected with the tower top pre-embedded anchoring system, the connection between the floating crane lifting hook and the catwalk is cancelled, and the whole span erection of the catwalk is completed.
2. The suspension bridge catwalk spanning frame of claim 1, wherein after step seven, the floating crane is cancelled.
3. The suspension bridge catwalk spanning frame of claim 1, wherein in step four, the catwalk moves towards the midspan at a uniform speed for two segments.
4. The whole span structure of the suspension bridge catwalk according to claim 1, wherein steel anchor beams are respectively disposed at two ends of the catwalk, and the two ends of the catwalk are respectively connected to the winch and the gantry hook through the steel anchor beams.
5. The suspension bridge catwalk spanning frame arrangement of claim 1, further comprising,
and step eight, connecting the uniform ends of the two previously prefabricated side catwalks to one end of the top pre-anchoring system of the catwalk, and connecting the other end of the catwalk to the winch on the corresponding side.
6. The suspension bridge catwalk whole span structure management method according to claim 1, wherein two segments of catwalks are prefabricated on two sides of a span bridge respectively, specifically:
and paving battens on the ground on the two bridge sides at intervals, and performing catwalk prefabrication and forming operation on the battens.
7. The span erecting method of suspension bridge catwalk according to claim 6, wherein the length of each catwalk is half of the span length of the bridge.
8. The whole span structure of the suspension bridge catwalk according to claim 4, wherein the catwalk is provided with a bearing rope and a handrail rope, and the bearing rope and the handrail rope at two ends of the catwalk are fixed on the steel anchor beams.
9. The suspension bridge catwalk spanning frame arrangement of claim 1, wherein in step four, while pulling the gantry hook and thus the catwalk connected to the gantry hook, the following operations are performed:
and starting a winch of the corresponding side span bridge, reversely pulling the catwalk, wherein the reverse pulling force of the winch is smaller than the pulling force of the tower top portal frame, so that the catwalk moves towards the midspan span respectively.
10. The suspension bridge catwalk spanning frame of claim 1, wherein the catwalk is pulled while maintaining a pulling speed within a preset range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234581.1A CN114182633B (en) | 2021-10-22 | 2021-10-22 | Suspension bridge catwalk span-setting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111234581.1A CN114182633B (en) | 2021-10-22 | 2021-10-22 | Suspension bridge catwalk span-setting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114182633A true CN114182633A (en) | 2022-03-15 |
| CN114182633B CN114182633B (en) | 2023-04-28 |
Family
ID=80539585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111234581.1A Active CN114182633B (en) | 2021-10-22 | 2021-10-22 | Suspension bridge catwalk span-setting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114182633B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292317A (en) * | 1997-02-19 | 1998-11-04 | Yokogawa Buritsuji:Kk | Installation method and device of bridge girder member |
| CN101225638A (en) * | 2007-12-20 | 2008-07-23 | 中铁大桥局股份有限公司 | Method for mounting ground anchor type suspension bridge prestressed concrete stiffening box girder |
| CN102392418A (en) * | 2011-12-01 | 2012-03-28 | 中交二公局第二工程有限公司 | Span-division erection construction method of construction catwalk of multi-tower suspension bridge |
| CN102720141A (en) * | 2012-07-13 | 2012-10-10 | 广东省长大公路工程有限公司 | Construction method integrating pilot rope river-crossing and traction system |
| CN108018778A (en) * | 2017-11-14 | 2018-05-11 | 中铁大桥局集团第六工程有限公司 | The cat road rope in navigable waters does not set up trailer system and cat road rope fast erecting method |
| CN112227206A (en) * | 2020-09-07 | 2021-01-15 | 中交二航局第二工程有限公司 | Process design and construction method for ground anchor to self-anchored beam |
-
2021
- 2021-10-22 CN CN202111234581.1A patent/CN114182633B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10292317A (en) * | 1997-02-19 | 1998-11-04 | Yokogawa Buritsuji:Kk | Installation method and device of bridge girder member |
| CN101225638A (en) * | 2007-12-20 | 2008-07-23 | 中铁大桥局股份有限公司 | Method for mounting ground anchor type suspension bridge prestressed concrete stiffening box girder |
| CN102392418A (en) * | 2011-12-01 | 2012-03-28 | 中交二公局第二工程有限公司 | Span-division erection construction method of construction catwalk of multi-tower suspension bridge |
| CN102720141A (en) * | 2012-07-13 | 2012-10-10 | 广东省长大公路工程有限公司 | Construction method integrating pilot rope river-crossing and traction system |
| CN108018778A (en) * | 2017-11-14 | 2018-05-11 | 中铁大桥局集团第六工程有限公司 | The cat road rope in navigable waters does not set up trailer system and cat road rope fast erecting method |
| CN112227206A (en) * | 2020-09-07 | 2021-01-15 | 中交二航局第二工程有限公司 | Process design and construction method for ground anchor to self-anchored beam |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114182633B (en) | 2023-04-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101537976B (en) | Dual-tower-mast giant self-lifting crane and following-carrying lifting method thereof | |
| CN104284857A (en) | Heavy lifting apparatus and method | |
| CN101559905A (en) | Deck unit erection gantry | |
| CN105822072A (en) | Hoisting construction structure and method for air corridor ceiling | |
| CN108147295B (en) | Cable crane used in suspension bridge construction and hoisting traction system thereof | |
| CN201376848Y (en) | Large-scale double-tower automatic-elevation hoisting equipment | |
| CN109653481A (en) | A kind of hanging rail formula high-altitude operation platform and production method | |
| CN105113803A (en) | High-altitude sliding hoisting device of corridor truss of mountain and implementing method of high-altitude sliding hoisting device | |
| CN107858936B (en) | Giant caterpillar crane hanging component overcrossing railway bridge box girder construction method | |
| CN112575691B (en) | Single-column cable tower cable-stayed bridge cable hanging system and method | |
| CN108249317A (en) | A kind of cable crane full circle swinging trailer system and construction method | |
| CN108643058A (en) | Anchor after cable crane main rope cross sliding type | |
| CN114182633A (en) | Suspension bridge catwalk whole span frame management method | |
| JP2004346652A (en) | Structure of elevated steel tower and construction method | |
| CN210216187U (en) | Tonghong bailey type bridge-dismantling hoisting equipment | |
| CN108018778B (en) | Catwalk cable erection traction system and catwalk cable rapid erection method for non-navigable water area | |
| CN110803174A (en) | Double-cableway slope transportation device and using method thereof | |
| CN111441594B (en) | Construction method of multilayer sectional type main cable | |
| CN212452317U (en) | Bridge deck rotating system | |
| CN210216177U (en) | Anchor machine dragging system for beam erecting | |
| CN108221639B (en) | Three tower suspension bridge girder installation construction structures | |
| CN221440099U (en) | Lifting device and lifting system | |
| CN217535243U (en) | Self-climbing crane | |
| CN215482363U (en) | Become width of cloth formula catwalk suitable for construction of single-column tower space cable suspension bridge | |
| CN110407111A (en) | CABLEWAY ERECTION SYSTEM self-propelled, layered structure Rope bearing equipment structural texture and installation method |
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 |