CN109797663A - A kind of construction method that the floating bracket of bridge structure is set - Google Patents
A kind of construction method that the floating bracket of bridge structure is set Download PDFInfo
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- CN109797663A CN109797663A CN201910037149.XA CN201910037149A CN109797663A CN 109797663 A CN109797663 A CN 109797663A CN 201910037149 A CN201910037149 A CN 201910037149A CN 109797663 A CN109797663 A CN 109797663A
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Abstract
The invention discloses a kind of bridge structures to float the construction method that bracket is set, which includes: to arrange the first track and the second track in river two sides, and bridge structure is placed on the first track.Subsequent movable bridge structure is to the first setting position, and with preset first fulcrum in the first towboat supporting bridge structure.First fulcrum can be located to bridge structure near the one end on river opposite bank, do not have to reserved disembarkation fulcrum.Bridge structure is continued to move to the second setting position, and with preset second fulcrum in the second towboat supporting bridge structure.The first towboat is unloaded, at this time using the first fulcrum as disembarkation fulcrum.Bridge structure is continued to move to, until the first fulcrum is fallen on the second track.Then the second towboat is unloaded, bridge structure is continued to move to, until bridge structure is moved to design position.The construction method solves known schemes in the construction process, the problem of need to adding nose girder in bridge structure front end, bracket need to be set up in river or dredged to river, then one end of bridge structure is transported to opposite bank.
Description
Technical field
The present invention relates to science of bridge building fields, and in particular to a kind of construction method that the floating bracket of bridge structure is set.
Background technique
It is that the one kind in bridge construction field is set a roof beam in place technology that floating support, which builds a bridge,.This technology of setting a roof beam in place is generally in land Jiang Qiao
Girder construction integral installation is completed, and so that structure one end is stretched out spelling bracket by incremental launching device, the lower bank fulcrum on spelling bracket is fallen
Fulcrum is transferred on floating support ship by beam, then by incremental launching device as floating support power, so that pontoon is together with bridge structure to right
Bank is mobile, until opposite bank is arrived in bridge front end, then fulcrum on ship is fallen beam, and by disembarkation point supporting in opposite bank, last pushing tow is just
Position.
But floating bracket set bridge technology need in the construction process in the case where bridge front end is arranged bank fulcrum, intermediate support and
Debark three fulcrums of fulcrum, wherein lower distance between bank fulcrum and intermediate support needs to meet the construction width that bridge is gone on board, in
Between fulcrum to the distance between disembarkation fulcrum need to meet the construction width that bridge goes ashore.It is past to meet the condition gone ashore on bridge
It is taken toward needs and adds nose girder in bridge front end, sets up portion support in river or the measure of dredging etc. is carried out to river.It adds
Nose girder scheme is restricted by bridge structure, and certain structures are difficult to add nose girder；Set up in river bracket or dredged there is also
The problem of influencing navigation and flood control, some sections are difficult to carry out.
Summary of the invention
In view of the deficiencies in the prior art, the purpose of the present invention is to provide what a kind of floating bracket of bridge structure was set to apply
Work method can solve in the work progress that floating support builds a bridge, and needs to take and adds nose girder in bridge front end, takes in river
If portion support or the problem of carry out the measure of dredging etc. to river, one end of bridge structure could be transported to opposite bank.
To achieve the above objectives, the technical solution adopted by the present invention is that:
The present invention provides a kind of construction method that the floating bracket of bridge structure is set, and the described method comprises the following steps:
The first track and the second track are arranged in river two sides, and bridge structure is placed on the first track；
The mobile bridge structure is to the first setting position, and in the first towboat support bridge structure preset the
One fulcrum；
The bridge structure is continued to move to the second setting position, and is supported with the second towboat and is preset in the bridge structure
The second fulcrum；
First towboat is unloaded, so that second towboat is individually supported the bridge structure, continues to move to the bridge
Structure, until first fulcrum is fallen on second track；And unloading second towboat, continue to move to the bridge
Structure, until the bridge structure is moved to design position.
On the basis of above scheme, the construction method further include: arrange first track and the in river two sides
Before two tracks, in river two sides, arrangement is used to support the bracket of first track and second track.
On the basis of above scheme, preset first fulcrum in the bridge structure, specific mistake are supported with the first towboat
Journey are as follows:
The first buttress is installed on first towboat；
Water ballast reduces the absolute altitude of first towboat, makes the highest point of first buttress lower than the bridge structure
Minimum point；
First towboat is moved to the underface of first fulcrum；
Cabin water is arranged, the absolute altitude of first towboat is increased, first buttress is made to support the bridge structure.
On the basis of above scheme, the detailed process of the first towboat is unloaded are as follows:
Water ballast reduces the absolute altitude of first towboat, makes the highest point of first buttress lower than the bridge structure
Minimum point.On the basis of above scheme, preset second fulcrum in the bridge structure, specific mistake are supported with the second towboat
Journey are as follows:
The second buttress is installed on second towboat；
Water ballast reduces the absolute altitude of second towboat, makes the highest point of second buttress lower than the bridge structure
Minimum point；
Second towboat is moved to the underface of second fulcrum；
Draining increases the absolute altitude of second towboat, and second buttress is made to support the bridge structure.
On the basis of above scheme, the detailed process of the second towboat is unloaded are as follows:
Water ballast reduces the absolute altitude of second towboat, makes the highest point of second buttress lower than the bridge structure
Minimum point.
On the basis of above scheme, push the bridge structure mobile using top-pushing mechanism.
On the basis of above scheme, the construction method further include: in the bridge structure and first track and
Antifriction component is set between second track.
On the basis of above scheme, the construction method further include: limit first towboat and institute with guiding mechanism
State the moving direction of the second towboat in water.
On the basis of above scheme, the guiding mechanism includes four group of eight word anchor, with guiding mechanism limitation described first
The moving direction of towboat and second towboat in water, detailed process are as follows:
Step A: the two sides on first towboat and the second towboat moving direction are respectively arranged one group of eight word anchor, and open
Tightly；
Step B: before mobile in first towboat or the second towboat, first loosen one close to first track side
Eight word anchors of group；
Step C: keeping first towboat or second towboat mobile, until close to one group of eight word of first track
Anchor tensioning, is then tensioned one group of eight word anchor far from first track；
Step B and step C is repeated, until first towboat or second towboat are moved to setting position.
Compared with the prior art, the advantages of the present invention are as follows: when this method is used, first is arranged in river two sides first
Track and the second track, and bridge structure is placed on the first track.Subsequent movable bridge structure is used in combination to the first setting position
Preset first fulcrum in first towboat supporting bridge structure.First fulcrum can be located to bridge structure near the one of river opposite bank
End does not have to reserved disembarkation fulcrum.Bridge structure is continued to move to the second setting position, and in the second towboat supporting bridge structure
Preset second fulcrum.The first towboat is unloaded, the independent supporting bridge structure of the second towboat is made, at this time using the first fulcrum as disembarkation
Fulcrum.Bridge structure is continued to move to, until the first fulcrum is fallen on the second track.Then the second towboat is unloaded, bridge is continued to move to
Girder construction, until bridge structure is moved to design position.It can not have to the fulcrum of reserved disembarkation using this method, therefore not need
It in structure front end increase nose girder, does not need to set up bracket in river or river is dredged, solve engineering construction
Difficulty, while project amount is reduced, project progress is accelerated, to save cost.
Detailed description of the invention
Fig. 1 is a kind of first state front view for the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 2 is a kind of first state top view for the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 3 is a kind of second state front view of the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 4 is a kind of second state top view of the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 5 is a kind of third state front view for the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 6 is a kind of third state top view for the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 7 is a kind of 4th state front view of the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
Fig. 8 is a kind of 4th state top view of the construction method that the floating bracket of bridge structure is set in the embodiment of the present invention；
In figure: the first track of 11-, the second track of 12-, 2- bridge structure, the first fulcrum of 21-, the second fulcrum of 22-, 31-
One towboat, the first buttress of 311-, the second towboat of 32-, the second buttress of 321-, 4- top-pushing mechanism, 5- guiding mechanism, 6- bracket, 7-
Antifriction component.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
The construction method that bracket is set is floated using bridge structure the present invention also provides a kind of, method includes the following steps:
S1: before river two sides deployment rails 1, in river two sides, arrangement is used to support the bracket 6 of track 1.
In the present embodiment, when water level is lower, bridge structure 2 need to stretch out can just make the first towboat 3 in water very much over long distances
In support stretching bridge structure 2 one end.But meets the force request of bridge structure 2 again, stretch out too long, bridge structure
Meeting unstability, falls into korneforos, so can set up bracket 6 below track when water level is too low, makes the first track 11 and the second rail
Road 12 extends to river opposite bank.To which supporting bridge structure 2 can stretch out more distances to river opposite from the first track 11, together
When can also enable the second track 12 connect towboat 3 be conveyed through come bridge structure 2.The step is optional step, in other realities
Apply in example, can not also erect bracket 6, such as when water level is sufficiently high, bridge structure 2 is extended in the case where meeting stress
Sufficiently long range makes towboat 3 support one end.
S2: the first track 11 and the second track 12 are arranged in river two sides, and bridge structure 2 is placed in the first track 11
On.
Fig. 1 is a kind of first state front view for the construction method that the floating bracket of bridge structure is set, Fig. 2 in the embodiment of the present invention
The first state top view for the construction method that bracket is set is floated for bridge structure a kind of in the embodiment of the present invention.
First state figure is the state diagram that the bridge structure 2 that will splice is placed on the first guide rail 11.
As depicted in figs. 1 and 2, in the present embodiment, when in use, the first track 11 and the second track 12 are respectively placed in
The bridge structure 2 spliced is placed on the first track 11 by the both sides on riverbank.
If bracket 6 need to be set up the first track 11 and the second track 12 are arranged on bracket 6.
S3: 2 to the first setting position of movable bridge structure, and in 31 supporting bridge structure 2 of the first towboat preset
One fulcrum 21.
Fig. 3 is a kind of second state front view of the construction method that the floating bracket of bridge structure is set, Fig. 4 in the embodiment of the present invention
The second state top view of the construction method that bracket is set is floated for bridge structure a kind of in the embodiment of the present invention.
Second state diagram is the state diagram of the first fulcrum of 31 supporting bridge structure 2 of the first towboat.
As shown in Figure 3 and Figure 4, in the present embodiment, the first setting position is that lower first fulcrum 21 of bridge structure 2 just may be used
With the position supported by the first towboat 31.One end for stretching to river opposite bank of bridge structure 2 is arranged in first fulcrum 21, does not have to reserved
Debark fulcrum.When movable bridge structure 2, moved along the first track 11.
The detailed process of S3 step are as follows:
S31: installing the first buttress 311 on the first towboat 31, and the first buttress 311 of installation is used to support in bridge structure 2
The first fulcrum 21.
S32: water ballast reduces the absolute altitude of the first towboat 31, makes the highest point of the first buttress 311 lower than bridge structure 2
Minimum point.Specifically, water ballast operation is carried out to the first towboat 31, i.e., is filled the water to the water tank of the first towboat 31, reduced by first and drag
The absolute altitude of ship.
S33: the first towboat 31 is moved to the underface of the first fulcrum 21.
S34: draining increases the absolute altitude of the first towboat 31, makes 311 supporting bridge structure 2 of the first buttress.S4: it continues to move to
2 to the second setting position of bridge structure, and with preset second fulcrum 22 in 32 supporting bridge structure 2 of the second towboat.
Fig. 5 is a kind of third state front view for the construction method that the floating bracket of bridge structure is set, Fig. 6 in the embodiment of the present invention
The third state top view for the construction method that bracket is set is floated for bridge structure a kind of in the embodiment of the present invention.
Third state figure is the state of the first towboat 31 and the second towboat 32 while the first fulcrum of supporting bridge structure 2
Figure.
As shown in Figure 5 and Figure 6, the first towboat 31 and the second towboat 32 while supporting bridge structure 2.The step is bridge knot
Structure 2 converts Support Position, vacates Support Position for the disembarkation of bridge structure 2 and prepares.
The detailed process of S4 step are as follows:
S41: installing the second buttress 321 on the second towboat 32, and the second buttress 321 of installation is used to support in bridge structure 2
The second fulcrum 22.
S42: water ballast reduces the absolute altitude of the second towboat 32, makes the highest point of the second buttress 321 lower than bridge structure 2
Minimum point.Specifically, water ballast operation is carried out to the second towboat 32, i.e., is filled the water to the water tank of the second towboat 32, reduced by second and drag
The absolute altitude of ship.
S43: the second towboat 32 is moved to the underface of the second fulcrum；
S44: draining increases the absolute altitude of the second towboat 32, makes 321 supporting bridge structure 2 of the second buttress.
S5: the first towboat 31 of unloading makes the independent supporting bridge structure 2 of the second towboat 32, continues to move to bridge structure 2, directly
It is fallen on the second track 12 to the first fulcrum 21.
Preferably, the detailed process of the first towboat 31 is unloaded are as follows: water ballast reduces the absolute altitude of the first towboat 31, makes first
The highest point of buttress 311 is lower than the minimum point of bridge structure 2.Can making the first towboat 31 from 2 bottom of bridge structure in this way, movement is opened.
Fig. 7 is a kind of 4th state front view of the construction method that the floating bracket of bridge structure is set, Fig. 8 in the embodiment of the present invention
The 4th state top view of the construction method that bracket is set is floated for bridge structure a kind of in the embodiment of the present invention.
4th state diagram is that the first fulcrum of bridge structure 2 is transported to the state that river opposite bank is fallen on the second track 12
Figure.
As shown in Figure 7 and Figure 8, the first fulcrum of bridge structure 2 is fallen on the second track 12.So far, the one of bridge structure 2
End is transported to river opposite bank.
S6: the second towboat 32 of unloading continues to move to bridge structure 2, until bridge structure 2 is moved to design position.
Preferably, the detailed process of the second towboat 32 is unloaded are as follows: water ballast reduces the absolute altitude of the second towboat 32, makes second
The highest point of buttress 321 is lower than the minimum point of bridge structure 2.Can making the second towboat 32 from 2 bottom of bridge structure in this way, movement is opened.
Preferably, keep bridge structure 2 mobile using the promotion of top-pushing mechanism 4.Bridge structure 2 can be made mobile more in this way
Stablize.
Preferably, antifriction component 7 is set between bridge structure 2 and the first track 11, reduces bridge structure 2 and the first rail
Frictional force between road 11.Antifriction component 7 is used to reduce the frictional force between track 1 and bridge structure 2, facilitates top-pushing mechanism 4
Push bridge structure 2 mobile.
In the present embodiment, antifriction component 7 includes link block and idler wheel, and idler wheel is fixed on link block, and idler wheel can be in-orbit
It is rolled on road 1.When in use, link block is connect with bridge 2, rolls bridge 2 on track 1, to reduce track 1 and bridge
Frictional force between 2.
It in other embodiments, can also be by arranging the small tetrafluoroethene plate of coefficient of friction between bridge 2 and track 1
To reduce the frictional force of bridge 2 and track 1.
In addition, as shown in Figure 5 and Figure 6, which floats the construction method that bracket is set further include: limited with guiding mechanism 5
Make the moving direction of the first towboat 31 and the second towboat 32 in water.The first towboat 31 and the second towboat 32 can be made in water in this way
Middle movement it is more steady.The step is optional step.
Optionally, guiding mechanism 5 includes four group of eight word anchor, is dragged wherein limiting the first towboat 31 and second with guiding mechanism 5
The moving direction of ship 32 in water, detailed process are as follows:
Step A: the two sides on 32 moving direction of the first towboat 31 and the second towboat are respectively arranged one group of eight word anchor, and open
Tightly.
Step B: before mobile in the first towboat 31 or the second towboat 32, first loosen one group close to 11 side of the first track
Eight word anchors.
Step C: keeping the first towboat 31 or the second towboat 32 mobile, until close to one group of eight word anchor of the first track 11
Tightly, then it is tensioned one group of eight word anchor far from the first track 11.
Step B and step C is repeated, until the first towboat 31 or the second towboat 32 are moved to setting position.
Wherein loosen the length of one group of eight word anchor close to 11 side of the first track every time no more than 10cm, using this
Mobile first towboat 31 of kind of mode or the second towboat 32, can be improved 32 stability of the first towboat 31 and the second towboat, avoid the
One towboat 31 and the second towboat 32 influence the stability of its movement under the impact of river water.
In conclusion when this method is used, the first track and the second track are arranged in river two sides first, and by bridge
Structure is placed on the first track.Subsequent movable bridge structure is to the first setting position, and in the first towboat supporting bridge structure
Preset first fulcrum.First fulcrum can be located to bridge structure near the one end on river opposite bank, do not have to reserved disembarkation fulcrum.After
Continuous movable bridge structure is to the second setting position, and with preset second fulcrum in the second towboat supporting bridge structure.Unloading the
One towboat makes the independent supporting bridge structure of the second towboat, at this time using the first fulcrum as disembarkation fulcrum.Continue to move to bridge knot
Structure, until the first fulcrum is fallen on the second track.Then the second towboat is unloaded, bridge structure is continued to move to, until bridge structure
It is moved to design position.Can not have to the fulcrum of reserved disembarkation using this method, thus do not need structure front end increase nose girder,
It does not need to set up bracket in river or river is dredged, solve the difficulty of engineering construction, while reducing engineering
Amount, accelerates project progress, to save cost.
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 (10)
1. a kind of bridge structure floats the construction method that bracket is set, which is characterized in that the described method comprises the following steps:
In river two sides arrangement the first track (11) and the second track (12), and bridge structure (2) is placed in the first track (11)
On；
The mobile bridge structure (2) is supported on the bridge structure (2) in advance with the first towboat (31) to the first setting position
If the first fulcrum (21)；
The bridge structure (2) is continued to move to the second setting position, and supports the bridge structure (2) with the second towboat (32)
Upper preset second fulcrum (22)；
First towboat (31) is unloaded, so that second towboat (32) is individually supported the bridge structure (2), continues to move to institute
Bridge structure (2) are stated, until first fulcrum (21) falls on second track (12)；And
Second towboat (32) is unloaded, the bridge structure (2) are continued to move to, until the bridge structure (2) are moved to and set
Count position.
2. bridge structure as described in claim 1 floats the construction method that bracket is set, which is characterized in that the construction method is also wrapped
Include: before first track (11) and the second track (12) are arranged in river two sides, in river two sides, arrangement is used to support described
The bracket (6) of first track (11) and second track (12).
3. bridge structure as described in claim 1 floats the construction method that bracket is set, which is characterized in that propped up with the first towboat (31)
Support preset first fulcrum, detailed process on the bridge structure (2) are as follows:
The first buttress (311) are installed on first towboat (31)；
Water ballast reduces the absolute altitude of first towboat (31), makes the highest point of first buttress (311) lower than the bridge
The minimum point of structure (2)；
First towboat (31) is moved to the underface of first fulcrum (21)；
Cabin water is arranged, the absolute altitude of first towboat (31) is increased, first buttress (311) is made to support the bridge structure (2).
4. bridge structure as claimed in claim 3 floats the construction method that bracket is set, which is characterized in that unloading the first towboat (31)
Detailed process are as follows:
Water ballast reduces the absolute altitude of first towboat (31), makes the highest point of first buttress (311) lower than the bridge
The minimum point of structure (2).
5. bridge structure as described in claim 1 floats the construction method that bracket is set, which is characterized in that propped up with the second towboat (32)
Support preset second fulcrum, detailed process on the bridge structure (2) are as follows:
The second buttress (321) are installed on second towboat (32)；
Water ballast reduces the absolute altitude of second towboat (32), makes the highest point of second buttress (321) lower than the bridge
The minimum point of structure (2)；
Second towboat (31) is moved to the underface of second fulcrum；
Draining increases the absolute altitude of second towboat (32), and second buttress (321) is made to support the bridge structure (2).
6. bridge structure as claimed in claim 5 floats the construction method that bracket is set, which is characterized in that unloading the second towboat (32)
Detailed process are as follows:
Water ballast reduces the absolute altitude of second towboat (32), makes the highest point of second buttress (321) lower than the bridge
The minimum point of structure (2).
7. bridge structure as described in any one in claim 1-5 floats the construction method that bracket is set, it is characterised in that: use pushing tow
Mechanism (4) pushes the bridge structure (2) mobile.
8. bridge structure as described in any one in claim 1-5 floats the construction method that bracket is set, which is characterized in that the construction
Method further include: antifriction is set between the bridge structure (2) and first track (11) and second track (12)
Component (7).
9. bridge structure as described in any one in claim 1-5 floats the construction method that bracket is set, which is characterized in that the construction
Method further include: limit the mobile side of first towboat (31) and second towboat (32) in water with guiding mechanism (5)
To.
10. bridge structure as claimed in claim 9 floats the construction method that bracket is set, the phase is characterized in that, the guiding mechanism (5)
Including four group of eight word anchor, the shifting of first towboat (31) and second towboat (32) in water is limited with guiding mechanism (5)
Dynamic direction, detailed process are as follows:
Step A: the two sides on first towboat (31) and the second towboat (32) moving direction are respectively arranged one group of eight word anchor,
And it is tensioned；
Step B: before mobile in first towboat (31) or the second towboat (32), first loosen close to first track (11)
One group of eight word anchor of side；
Step C: keeping first towboat (31) or second towboat (32) mobile, until close to first track (11)
One group of eight word anchor tensioning, is then tensioned one group of eight word anchor far from first track (11)；
Step B and step C is repeated, until first towboat (31) or second towboat (32) are moved to setting position.
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| CN110306442A (en) * | 2019-07-23 | 2019-10-08 | 安徽省路港工程有限责任公司 | A kind of few fulcrum pushing tow is floating to drag method bridge falsework erection method |
| CN110306441A (en) * | 2019-07-23 | 2019-10-08 | 安徽省路港工程有限责任公司 | A kind of Long Span Steel Arch Bridges landing stage fulcrum converts push construction method |
| CN110396938A (en) * | 2019-08-07 | 2019-11-01 | 中铁二十四局集团有限公司 | Longspan steel truss girder bridge multiple spot floats jacking and pushes away construction system |
| CN110878531A (en) * | 2019-10-18 | 2020-03-13 | 安徽省路港工程有限责任公司 | Navigation water steel bridge pushing and dragging system and construction method thereof |
| CN112482246A (en) * | 2020-12-03 | 2021-03-12 | 中铁大桥局第七工程有限公司 | Floating erection method of bridge |
| CN113863142A (en) * | 2021-09-10 | 2021-12-31 | 中国建筑第八工程局有限公司 | Method for installing large-span river-crossing corridor cantilever |
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