CN108978499A - A kind of oblique pull suspension cable co-operative system bridge erection method - Google Patents
A kind of oblique pull suspension cable co-operative system bridge erection method Download PDFInfo
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- CN108978499A CN108978499A CN201810602526.5A CN201810602526A CN108978499A CN 108978499 A CN108978499 A CN 108978499A CN 201810602526 A CN201810602526 A CN 201810602526A CN 108978499 A CN108978499 A CN 108978499A
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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
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The step of the invention discloses a kind of oblique pull suspension cable co-operative system bridge erection methods, are related to technical field of bridge construction, the erection method includes: two main piers and king-tower being spaced of constructing；Anchorage is installed, cat road is set up, the road Bing Yanmao sets up main push-towing rope；Girder is set up, and tensioning suspension cable completes the construction of oblique pull section and overlap section main girder construction；Sunpender is installed on main push-towing rope, will be connect to frame girder steel with the girder set up, and the sunpender of tensioning suspention section；It repeats the above steps, until lifting closure section girder steel after frame girder steel is each attached to positioned at the closure mouth in two king-tower middle positions, completes suspention section construction；It installs and the sunpender of tensioning overlap section beam section, completion overlap section is constructed.The closure mouth of girder of the present invention is one, using the symmetry of bridge structure, guarantees that the closure main depth of beam in mouth two sides is not much different, reduces the difficulty of closure, improve the security risk during main beam supporting, improve construction efficiency.
Description
Technical field
The present invention relates to technical field of bridge construction, and in particular to a kind of oblique pull suspension cable co-operative system bridge erection method.
Background technique
Oblique pull suspension cable co-operative system bridge has both the advantage that cable-stayed bridge rigidity is big and suspension bridge span ability is strong.The axis of girder
Small with span cable-stayed bridge to pressure ratio, king-tower ratio is low with span cable-stayed bridge；Rigidity ratio is big with span suspension bridge, main push-towing rope and anchorage ruler
It is very little smaller than same span suspension bridge.It thus can be used as the preferred embodiment to the higher super-span railroad bridge of rigidity of structure demand.
A kind of part earth anchor oblique pull suspension cable cooperation learning is disclosed in Chinese invention patent specification CN201510719351.2
It is bridge totality construction method, which determines reasonable bridge completion state first, then hangs main push-towing rope, then carries out oblique pull area simultaneously
The beam section free cantilever erection of section and the beam section of sunpender section are set up, and finally select to close in oblique pull suspension cable overlap section by oblique pull section side
Dragon.Erection of the invention especially suitable for the relatively small part earth anchor oblique pull suspension cable co-operative system bridge of bridge floor secondary dead load.
For railway bridge or combined oblique pull suspension cable co-operative system bridge: one side, railway bridge or combined bridge
The ratio that secondary dead load accounts for the total dead load of full-bridge is very high, and before girder closure, the secondary dead load of structure not yet applies, if mouth will be joined the two sections of a bridge, etc
It is located at oblique pull suspension cable overlap section, then before lifting closure section, suspention section beam section will be up to several meters than oblique pull section beam section, if adopting
With above-mentioned erection method, to adjust closure mouth both ends at this time to having closure condition will become abnormal difficult；On the other hand, end bay
It is supported by a small number of auxiliary piers, due to the tensioning again after midspan closing of overlap section suspension cable, the corresponding side of overlap section suspension cable
Bridge section also can only gradually construct after midspan closing with the inclined guy cable stretching of overlap section, lead to claim for eot of setting a roof beam in place, side
Across the cantilever time is long, and construction period security risks are big, if the first corresponding end bay beam section of installation overlap section suspension cable and tensioning
Corresponding suspension cable, then the Suo Li difference that will lead to king-tower two sides is too big, very unfavorable to the stress of king-tower.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide a kind of oblique pull suspension cable co-operative system bridges
Erection method guarantees that the closure main depth of beam in mouth two sides is not much different, reduces the difficulty of closure, during improving main beam supporting
Security risk improves construction efficiency.
To achieve the above objectives, the technical solution adopted by the present invention is that: a kind of oblique pull suspension cable co-operative system bridge erection side
Method, comprising the following steps:
S1, the main pier at two interval of construction, king-tower of constructing respectively on two main piers；
S2 installs anchorage in two sides, sets up both ends and is connected to the two sides road anchorage Shang Mao, the road Bing Yanmao sets up master
Cable；
S3 symmetrically sets up girder, and tensioning suspension cable on two king-towers, up to the construction of completion oblique pull section and again
Overlapping field main girder construction；
S4, the sunpender of installation suspention section on main push-towing rope are carrying basis promotion suspention section to frame girder steel with main push-towing rope
It is connect with the girder set up, and the sunpender of tensioning suspention section；
S5 repeats step S4, closes until lifting after frame girder steel is each attached to positioned at the closure mouth in two king-tower middle positions
Imperial section girder steel completes suspention section construction；
S6, the sunpender of installation and tensioning overlap section beam section on main push-towing rope complete overlap section construction.
It based on the above technical solution, further include the abutment pier constructed between main pier and two sides in step S1.
Based on the above technical solution, in step S2 and S3, the construction for carrying out setting up main push-towing rope and girder is synchronized.
Based on the above technical solution, it in step S3, synchronizes since two king-tower tower bodies and is set up to king-tower two sides
Girder.
Based on the above technical solution, in step S3, pier collateral branch frame is installed at the tower body of king-tower, near king-tower
Girder is installed on pier collateral branch frame.
Based on the above technical solution, in step S3, after the main beam supporting near king-tower, the assembled bridge floor on girder
Loop wheel machine installs the girder of remaining oblique pull section using erection crane.
It based on the above technical solution, further include that deck unit erection gantry is installed on main push-towing rope in step S4, the cable load is hung
Machine is for being promoted to frame girder steel and closure section girder steel.
Based on the above technical solution, in step S5, the linear of closure mouth two sides girder is first adjusted, then lift closure
Duan Gangliang.
Based on the above technical solution, in step S6, the sunpender first not tensioning of overlap section, overlap section ballast is applied
After work, then tensioning operation is carried out to the sunpender of overlap section.
Compared with the prior art, the advantages of the present invention are as follows:
(1) the closure mouth of girder of the invention is one, using the symmetry of bridge structure, guarantees closure mouth two sides girder
Height be not much different, only need to eliminate closure mouth two sides outer corner difference closing construction can be completed, reduce the difficulty of closure.
(2) main cable erection of the invention and oblique pull section girder cantilever assembly erection synchronous construction save the duration.
(3) main beam supporting of the invention is gradually set up since king-tower to two sides, and girder quickly goes up pier, reduces work progress
In security risk.
(4) tensioning sunpender again after overlap section ballast of the invention guarantees the symmetry during main beam supporting, improves frame
If the stress of king-tower in the process, guarantee construction safety.
Detailed description of the invention
Fig. 1 is the flow chart of oblique pull suspension cable co-operative system bridge erection method of the present invention；
Fig. 2 is the section partition schematic diagram of oblique pull suspension cable co-operative system bridge erection method of the present invention；
Fig. 3 is the construction on the basis, king-tower, abutment pier and anchorage of oblique pull suspension cable co-operative system bridge erection method of the present invention
Schematic diagram；
Fig. 4 is the construction schematic diagram that the cat road of oblique pull suspension cable co-operative system bridge erection method of the present invention is set up；
Fig. 5 is the construction signal of the main push-towing rope and oblique pull section girder of oblique pull suspension cable co-operative system bridge erection method of the present invention
Figure；
Fig. 6 is the construction schematic diagram of the suspention section girder of oblique pull suspension cable co-operative system bridge erection method of the present invention；
Fig. 7 is the closure section girder steel construction schematic diagram of oblique pull suspension cable co-operative system bridge erection method of the present invention；
Fig. 8 is that the oblique pull suspension cable overlap section hanger construction of oblique pull suspension cable co-operative system bridge erection method of the present invention is illustrated
Figure；
In figure: 1- main push-towing rope, 2- suspension cable, 3- sunpender, 4- girder, 5- wait for frame girder steel, 6- closure section girder steel, 7- king-tower, 8-
Abutment pier, 9- anchorage, 10- erection crane, 11- pier collateral branch frame, 12- deck unit erection gantry, 13- cat road.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and embodiments.
Embodiment 1:
Shown in Figure 1, the embodiment of the present invention provides a kind of oblique pull suspension cable co-operative system bridge erection method, including following
Step:
Step S1, shown in Figure 3, the main pier at two interval of construction, king-tower 7 of constructing respectively on two main piers, together
When the abutment pier 8 that can also construct between main pier and two sides, improve construction efficiency.
Step S2 installs anchorage 9 in two sides, sets up both ends and be connected on two sides anchorage 9 referring to shown in Fig. 3, Fig. 4
Cat road 13, the road Bing Yanmao 13 set up main push-towing rope 1.
Step S3 referring to fig. 4, shown in Fig. 5, symmetrically sets up girder 4, and tensioning suspension cable 2 on two king-towers 7, until
It completes the construction of oblique pull section and overlap section girder 4 is constructed.Specifically, pier collateral branch frame 11 is installed at the tower body of king-tower 7, it is main
Girder 4 near tower 7 is installed on pier collateral branch frame 11, after the girder 4 near king-tower 7 is set up, the assembled erection crane on girder 4
10, the girder 4 of remaining oblique pull section is installed using erection crane 10.
Step S4, shown in Figure 6, the sunpender 3 of installation suspention section on main push-towing rope 1, and be that carrying basis mentions with main push-towing rope 1
Rise connecting to frame girder steel 5 with the girder 4 set up for suspention section, and the sunpender 3 of tensioning suspention section.Specifically, in main push-towing rope 1
Upper installation deck unit erection gantry 12 is promoted using deck unit erection gantry 12 to frame girder steel 5.
Step S5, shown in Figure 7, repetition step S4, until being each attached to frame girder steel 5 positioned at two king-towers, 7 interposition
Closure section girder steel 6 is lifted after the closure mouth set, and completes suspention section construction.Specifically, the line of first adjustment closure mouth two sides girder
Shape recycles deck unit erection gantry 12 to lift closure section girder steel 6.The closure mouth of girder 4 of the invention is one, utilizes bridge structure
Symmetry guarantees that the closure main depth of beam in mouth two sides is not much different, and conjunction can be completed in the outer corner difference that need to only eliminate closure mouth two sides
Dragon construction, reduces the difficulty of closure.
Step S6, shown in Figure 8, the sunpender 3 of installation and tensioning overlap section beam section on main push-towing rope 1 completes overlay region
Section construction.
Embodiment 2:
On the basis of embodiment 1, it is preferable that it is synchronous to set up main push-towing rope 1 and oblique pull section girder 4, when can save construction
Between and cost, oblique pull section girder 4 gradually set up since king-tower 7 to two sides, can allow pier on girder 4 as early as possible, guarantee girder 4
Symmetry in erection process reduces the security risk in work progress.
Embodiment 3:
On the basis of embodiment 1, the first not tensioning of sunpender 3 of overlap section, after the construction of overlap section ballast, then to overlapping
The sunpender 3 of section carries out tensioning operation, and adjustment full-bridge Suo Li makes structural linetype, internal force etc. reach design bridge completion state.Using this
Kind of form of construction work guarantees the symmetry in 4 erection process of girder, reduces the moment of flexure of king-tower 7, improve king-tower in erection process by
Power guarantees construction safety.
The present invention is not limited to the above-described embodiments, for those skilled in the art, is not departing from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications are also considered as protection of the invention
Within the scope of.The content being not described in detail in this specification belongs to the prior art well known to professional and technical personnel in the field.
Claims (9)
1. a kind of oblique pull suspension cable co-operative system bridge erection method, for setting up railway bridge or combined bridge, which is characterized in that
The following steps are included:
S1, the main pier at two interval of construction, constructs king-tower (7) respectively on two main piers；
S2 installs anchorage (9) in two sides, sets up both ends and be connected to two sides anchorage (9) road Shang Mao (13), the road Bing Yanmao
(13) main push-towing rope (1) is set up；
S3 is symmetrically set up girder (4) on two king-towers (7), and tensioning suspension cable (2), until complete oblique pull section construction with
And overlap section girder (4) construction；
S4, the sunpender (3) of installation suspention section on main push-towing rope (1) are carrying basis promotion suspention section to frame with main push-towing rope (1)
Girder steel (5) is connect with the girder (4) set up, and the sunpender (3) of tensioning suspention section；
S5 repeats step S4, lifts after the closure mouth in two king-towers (7) middle position until being each attached to after frame girder steel (5)
Closure section girder steel (6) completes suspention section construction；
S6, the sunpender (3) of installation and tensioning overlap section beam section on main push-towing rope (1) complete overlap section construction.
2. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: further include in step S1
The abutment pier (8) constructed between main pier and two sides.
3. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: in step S2 and S3,
Synchronize the construction for carrying out erection main push-towing rope (1) and girder (4).
4. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: in step S3, from two
A king-tower (7) tower body starts synchronous to king-tower (7) two sides erection girder (4).
5. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: in step S3, in master
Pier collateral branch frame (11) are installed at the tower body of tower (7), the girder (4) of king-tower (7) nearby is installed on pier collateral branch frame (11).
6. oblique pull suspension cable co-operative system bridge erection method as claimed in claim 4, it is characterised in that: in step S3, king-tower
(7) nearby after girder (4) is set up, the assembled erection crane (10) on girder (4) installs remaining tiltedly using erection crane (10)
Draw the girder (4) of section.
7. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: further include in step S4
Deck unit erection gantry (12) are installed on main push-towing rope (1), the deck unit erection gantry (12) is for being promoted to frame girder steel (5) and closure section girder steel
(6)。
8. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: in step S5, first adjust
The linear of Longkou two sides girder (4) is integrated, then lifts closure section girder steel (6).
9. oblique pull suspension cable co-operative system bridge erection method as described in claim 1, it is characterised in that: in step S6, overlapping
The first not tensioning of the sunpender (3) of section after the construction of overlap section ballast, then carries out tensioning operation to the sunpender (3) of overlap section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810602526.5A CN108978499A (en) | 2018-06-12 | 2018-06-12 | A kind of oblique pull suspension cable co-operative system bridge erection method |
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| CN201810602526.5A CN108978499A (en) | 2018-06-12 | 2018-06-12 | A kind of oblique pull suspension cable co-operative system bridge erection method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878529A (en) * | 2019-12-24 | 2020-03-13 | 上海市机械施工集团有限公司 | Construction device and construction method for stay cable bridge |
| CN111252196A (en) * | 2020-01-20 | 2020-06-09 | 中交第三航务工程局有限公司 | Anti-collision warning system of underwater cable-stayed suspension tunnel |
| CN112832144A (en) * | 2021-01-08 | 2021-05-25 | 重庆交通大学工程设计研究院有限公司 | Pedestrian suspension bridge reinforcing structure and construction process thereof |
| CN113255039A (en) * | 2021-05-26 | 2021-08-13 | 中铁大桥勘测设计院集团有限公司 | Method for determining main beam closure opening of steel truss girder cable-stayed suspension cable cooperation system bridge |
| CN113718626A (en) * | 2021-09-22 | 2021-11-30 | 中铁大桥局集团有限公司 | Construction method suitable for highway and railway dual-purpose cable-stayed suspension cooperative system bridge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112832144A (en) * | 2021-01-08 | 2021-05-25 | 重庆交通大学工程设计研究院有限公司 | Pedestrian suspension bridge reinforcing structure and construction process thereof |
| CN112832144B (en) * | 2021-01-08 | 2021-12-07 | 重庆交通大学工程设计研究院有限公司 | Pedestrian suspension bridge reinforcing structure and construction process thereof |
| CN113255039A (en) * | 2021-05-26 | 2021-08-13 | 中铁大桥勘测设计院集团有限公司 | Method for determining main beam closure opening of steel truss girder cable-stayed suspension cable cooperation system bridge |
| CN113255039B (en) * | 2021-05-26 | 2022-04-29 | 中铁大桥勘测设计院集团有限公司 | Method for determining main beam closure opening of steel truss girder cable-stayed suspension cable cooperation system bridge |
| CN113718626A (en) * | 2021-09-22 | 2021-11-30 | 中铁大桥局集团有限公司 | Construction method suitable for highway and railway dual-purpose cable-stayed suspension cooperative system bridge |
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