CN109056496A - A kind of super-span steel truss continuous bridge having initial curvature and construction method - Google Patents
A kind of super-span steel truss continuous bridge having initial curvature and construction method Download PDFInfo
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- CN109056496A CN109056496A CN201811067228.7A CN201811067228A CN109056496A CN 109056496 A CN109056496 A CN 109056496A CN 201811067228 A CN201811067228 A CN 201811067228A CN 109056496 A CN109056496 A CN 109056496A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 53
- 239000010959 steel Substances 0.000 title claims abstract description 53
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 5
- 229910000679 solder Inorganic materials 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- E01D6/00—Truss-type bridges
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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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
Abstract
The invention discloses a kind of super-span steel truss continuous bridges for having initial curvature, it is characterized in that, prefabricated each beam section lifting elements including multiple bridge piers (8) and in factory, including the big segment integral hoisting unit (1) of end bay, the big segment lifting unit (2) of first main span, the big segment lifting unit (3) of second main span and the small segment integral hoisting unit (4) of pier top, closure segment unit (5) is connected to each beam section lifting elements under Gravitative Loads there are initial curvature, it is linear smooth when to guarantee that bridge uses, camber is set in each beam section factory and offsets initial curvature.Dead load state pier top hogging moment is considerably reduced, part pier top structural internal force is transferred to span centre section, so that full bridge structure uniform force.The invention also discloses a kind of construction method of super-span steel truss continuous bridge for having initial curvature, work progress is adjusted to bridge structural internal force, has given full play to the stress performance in section, improves the economic performance of steel truss continuous bridge.
Description
Technical field
The invention belongs to technical field of bridge construction, more particularly, to a kind of super-span steel truss for having initial curvature
Continuous bridge and construction method.
Background technique
Steel truss continuous bridge is that a kind of span ability is larger, and economic performance preferably bridge type obtains in all kinds of bridges at present
Obtain extensive utilization.
When span requires larger, technical problem existing for steel truss continuous bridge mainly has the following aspects: the first, at
Under bridge dead load, the pier top position hogging moment of super-span steel truss continuous bridge is excessive, and the sagging moment of spaning middle section is smaller,
Bridge dead load internal force is unevenly distributed, pier top section stress state control design case, and spaning middle section utilization rate is lower.Using routine
Stress-free state method design and construction when, bridge dead load internal force distribution is not improved always, by increase purlin it is high and
Changing the mode of sectional dimension to adapt to dead load internal force status, brought economic benefit is poor, and excessively high truss depth
Bridge aesthetics performance is poor.Therefore, it is necessary to and add phase from the structural internal force state of adjustment large span steel truss continuous bridge
The construction measure answered, fundamentally improves structural internal force.The second, larger and deeper depth of water bridge location is required for span, it is conventional
Incremental launching construction method in construction method is difficult to realize, and is dissipated and spelled assembled construction method there are heavy workload, constructing operation not sides
Just the problems such as.Therefore, arrangement and method for construction be influence super-span steel truss continuous bridge an important factor for, need to seek it is efficient, economical,
High-precision construction method.
Therefore, for series of technical present in super-span steel truss continuous bridge, super-span steel truss is continuous
The structural internal force state for needing fundamentally to improve large span steel truss continuous bridge in beam bridge design is meeting stress safety, warp
On the basis of Ji property is good, the span ability of bridge is improved.Furthermore, it is desirable to seek suitable for super-span steel truss continuous bridge
Efficiently, economic, high-precision construction method.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of super-span steel for having initial curvature
Purlin continuous bridge, using each beam section lifting elements with camber of prefabrication, including the big segment integral hoisting list of end bay
Member, the big segment lifting unit of the first main span, the big segment lifting unit of the second main span, the small segment integral hoisting unit of pier top, each list
Member is generated initial curvature by Gravitative Loads under simply-supported state on bridge pier, offsets initial deformation by the camber being arranged in advance,
It is linear to become beam section design again, to guarantee linear smooth when bridge uses, considerably reduces dead load state pier top hogging moment,
Part pier top structural internal force is transferred to span centre section, so that full bridge structure uniform force.
To achieve the above object, according to one aspect of the present invention, a kind of super-span steel truss having initial curvature is provided
Continuous bridge, including multiple bridge piers, prefabricated each beam section lifting elements with camber in factory, including the big segment of end bay are whole
The big segment lifting unit of body lifting elements, the first main span, the big segment lifting unit of the second main span and the small segment of pier top are integrally hung
Fill unit, in which:
The small segment integral hoisting unit of pier top is set on other described bridge piers in addition to the bridge pier of two, both ends；
The big segment integral hoisting unit of the end bay at both ends pass through respectively the closure segment unit with it is corresponding described
The small segment integral hoisting unit of pier top is connected；The unit of the small segment integral hoisting of pier top pass through again the closure segment unit with
The big segment lifting unit of one main span is connected, and with the big segment lifting unit of second main span, passes through the closure section list
It is first to be connect with the small segment integral hoisting unit of the pier top, the big segment lifting unit of the second main span and the next section of big section of main span
Section lifting elements are connect by the closure segment unit with the next section of small segment integral hoisting unit of pier top again；
Closure segment unit is connected to each beam section lifting elements under Gravitative Loads there are initial curvature, each beam section
Lifting elements are arranged camber and offset initial deformation, so that pier top structure division internal force is transferred to span centre section.
Further, the closure segment unit, including closure section top boom, closure section web member and closure section lower boom,
Upper boom between the beam section lifting elements of two of adjacent lifting connects and composes closure section top boom, two institutes of adjacent lifting
State two beam section lifting elements that the web member between beam section lifting elements connects and composes closure section web member and adjacent lifting
Between lower boom connect and compose closure section lower boom.
Further, between the closure section top boom, closure section web member and closure section lower boom using bolt or
Site welding form is attached.
Further, it when between closure section top boom, closure section web member and closure section lower boom using bolt, uses
Oblong bolt hole.
Further, stiffening element under being added at pier top above the bridge pier using integral solder form.
Further, at the pier top under stiffening element according to stress need to be arranged two panel lengths or four
Or more panel length.
Further, the continuous bridge is additionally provided with diagonal brace for highway bridge stringer to be connected with lower boom.
Other side according to the invention provides a kind of super-span steel truss the continuous beam bridge construction side for having initial curvature
Method, for building the super-span steel truss continuous bridge of initial curvature, which comprises the steps of:
S1: construction basis and bridge pier, and bracket is set up at the bridge pier, it is completed using large ship each described
The lifting of the unit of the small segment integral hoisting of pier top；
S2: the big segment integral hoisting of the end bay with camber being prefabricated in the factory successively is lifted using large ship
The big segment lifting unit of unit, the first main span, the big segment lifting unit of the second main span and the big segment lifting unit of other main spans
With the big segment integral hoisting unit of end bay described in the other end；
S3: each beam section lifting elements, by Gravitative Loads, are offset just under simply-supported state by the camber being arranged in advance
Begin deformation, become again beam section design it is linear, closure section component length and connecting structure are calculated by accurate construction simulation process
Size, will be between above-mentioned each beam section lifting elements with initial curvature and the small segment integral hoisting unit of the pier top
Both ends carry out closing construction using bolt or site welding form, and oblong bolt hole can be used when using bolt；
S4: second phase and accessory structure construction are carried out, bridge pier collateral branch frame is removed.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
(1) the super-span steel truss continuous bridge for having initial curvature of the invention has camber using prefabrication
Each beam section lifting elements, including the big segment integral hoisting unit of end bay, the big segment lifting unit of the first main span, the second main span be big
The small segment integral hoisting unit of segment lifting unit, pier top, each unit are generated under simply-supported state by Gravitative Loads on bridge pier
Initial curvature offsets initial deformation by the camber being arranged in advance, it is linear to become beam section design again, to guarantee line when bridge uses
Shape it is smooth.By aforesaid operations, considerably reduce dead load state pier top hogging moment, part pier top structural internal force be transferred to across
Middle section, so that full bridge structure uniform force.
(2) the super-span steel truss continuous bridge for having initial curvature of the invention, closure segment unit includes that closure section winds up
Bar, closure section web member and closure section lower boom are applied for connecting other each beam section lifting elements using accurate simulation
The closure section component length and connecting structure size that work process is calculated, by between other lifting elements both ends using bolt or
Person's site welding form is attached, so that each beam section lifting elements join end to end, overall leveling.
(3) the super-span steel truss continuous bridge for having initial curvature of the invention uses integral solder shape above bridge pier
Stiffening element under formula is added at pier top, for further increasing span ability, lower reinforcing structure can be arranged according to the needs of stress
The panel length of two panel lengths or four or more.The setting of stiffening element is greatly improved pier top section and puts more energy into
The bending stiffness of beam reduces the stress state of pier top section structure, further improves the span ability of structure.And component
Processing factory's degree is high, precision is high, rapid and convenient of constructing.
(4) there is the super-span steel truss continuous bridge the continuous beam bridge construction method of initial curvature, each beam section is prefabricated in the factory
When certain camber is set, use the closure state of " with initial curvature ", it is using large ship that the small segment of pier top is whole
The big segment integral hoisting unit of body lifting elements, end bay, the big segment lifting unit of the first main span and the big segment of the second main span are hung
After dress unit successively lifts, initial deformation is offset by the way that camber is arranged in factory in advance, to guarantee linear when bridge uses
Smoothly, then closing construction is carried out, present invention employs the methods that the design and construction scheme of bridge structure combines, and utilize construction
Process adjusting has given full play to the stress performance in section at bridge structural internal force, improves the economic performance of steel truss continuous bridge.
Detailed description of the invention
Fig. 1 is that a kind of general layout that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is shown
It is intended to；
Fig. 2 is a kind of bridge structure that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention
Figure；
Fig. 3 is a kind of closure section that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention
Optimal crosssection figure；
Fig. 4 is pier top before a kind of closure that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention
Main beam structure figure；
Fig. 5 is that a kind of lifting pier top that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is small
Segment unit schematic diagram；
Fig. 6 is that a kind of lifting main span that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is big
Segment unit schematic diagram；
Fig. 7 is that a kind of closing construction that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is complete
At schematic diagram；
Fig. 8 is beam section before a kind of closure that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention
Each linear relation schematic diagram of curvature.
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: the big segment of 1- end bay is whole
The big segment lifting unit of lifting elements, the first main span of 2-, the big segment lifting unit of the second main span of 3-, the small segment of 4- pier top are integrally hung
Fill unit, 5- closure segment unit, 501- closure section top boom, 502- closure section web member, 503- closure section lower boom, at 6- pier top
Lower stiffening element, 7- diagonal brace, 8- bridge pier, the self weight of 9- beam section simply-supported state is linear, the production of 10- beam section factory is linear, 11- beam section is set
It counts linear.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below that
Not constituting conflict between this can be combined with each other.
Fig. 1 is that a kind of general layout that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is shown
It is intended to.As shown in Figure 1, a kind of super-span steel truss continuous bridge for having initial curvature includes: the big segment integral hoisting list of end bay
The big segment lifting unit 2 of first 1, first main span, the big segment lifting unit 3 of the second main span, the small segment integral hoisting unit 4 of pier top,
Join the two sections of a bridge, etc segment unit 5, and each lifting elements of continuous bridge are prefabricated in the factory and camber is arranged, and multiple bridges are arranged in continuous bridge
Pier 8, intermediate bridge pier top are equipped with the small segment integral hoisting unit 4 of pier top, and it is whole that the big segment of end bay is arranged in continuous bridge both ends
Lifting elements 1, the big segment integral hoisting unit 1 of the end bay at both ends pass through closure segment unit 5 and corresponding pier top trifle respectively
Section integral hoisting unit 4 is connected, and the unit 4 of the small segment integral hoisting of pier top passes through closure segment unit 5 and the big section of the first main span again
Section lifting elements 2 are connected, and the big segment lifting unit 2 of the first main span and the big segment lifting unit 3 of the second main span pass through closure section list
Member 5 is connect with the small segment integral hoisting unit 4 of pier top, and the big segment lifting unit 3 of the second main span and the next section of big segment of main span are hung
Dress unit passes through closure segment unit 5 again and connect with the small segment integral hoisting unit 4 of next section of pier top.Present invention employs " have just
The closure state of beginning curvature " adequately has adjusted the dead load internal force status of super-span steel truss continuous bridge, significantly alleviates
The excessive situation of dead load state pier top hogging moment, is transferred to span centre section for pier top stiff girder part internal force, so that in full-bridge
Power tends to the span ability that structure is uniformly greatly improved, and economic span single hole is up to 200m or more.
Fig. 2 is a kind of bridge structure that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention
Figure；Fig. 3 is that a kind of closure section that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is cross-section
Face layout drawing.As shown in Figures 2 and 3, join the two sections of a bridge, etc segment unit 5, including 501- closure section top boom, 502- closure section web member and
503- closure section lower boom.Closure section component length and connecting structure size is calculated by accurate construction simulation process, it will
Both ends are using bolt or site welding between the big segment integral hoisting unit 1 of end bay and the small segment integral hoisting unit 4 of pier top
Form is attached, and oblong bolt hole can be used when using bolt.As seen from Figure 3, continuous bridge is additionally provided with tiltedly
Support 7 is for highway bridge stringer to be connected with lower boom.
Further, stiffening element 6 under being added at pier top above bridge pier using integral solder form, for further mentioning
The internode length of two panel lengths or four or more can be arranged according to the needs of stress in high span ability, lower reinforcing structure
Degree.The bending stiffness of pier top section stiff girder is greatly improved in the setting of stiffening element 6, reduces answering for pier top section structure
Power state further improves the span ability of structure.And component processing factory degree is high, precision is high, and construction is quick just
It is prompt.
Fig. 4 is pier top before a kind of closure that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention
Main beam structure figure, Fig. 4 are a-quadrant partial enlarged view in Fig. 6.Fig. 8 be the present embodiments relate to closure before each curvature of beam section
Linear dependence schematic diagram.In conjunction with Fig. 8, the big segment integral hoisting unit 1 of end bay, the small segment integral hoisting of pier top unit 4 and
The beam section factory production linear 10 of arch is made when prefabricated in the big segment lifting unit 2 of first main span, under simply-supported state, by
Gravitative Loads, then beam section design linear 11 is deformed into this, carry out the closing construction between each beam section.According to unstress state
Construction method construction, dead load state pier top hogging moment is excessive, and full-bridge internal force is uneven.
Fig. 5 is that a kind of lifting pier top that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is small
Segment unit schematic diagram.As shown in figure 5, setting bridge pier 8 spaced apart, and pier top trifle is carried out on intermediate bridge pier 8
The construction of section integral hoisting unit 4.
Fig. 6 is that a kind of lifting main span that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is big
Segment unit schematic diagram.As shown in fig. 6, carrying out each beam after the completion of bridge pier 8 and the small segment integral hoisting unit 4 of pier top are constructed
The construction of section lifting elements, sets up bracket in bridge pier 8 in work progress, utilizes large ship to lift the big segment of each end bay whole
The small segment integral hoisting unit 4 of lifting elements 1, pier top and the big segment lifting unit of each main span, lifting elements temporary support
On bracket support.
Fig. 7 is that a kind of closing construction that the super-span steel truss continuous bridge for having initial curvature is related to of the embodiment of the present invention is complete
At schematic diagram.Bracket is set up in work progress by pier, completes each beam section lifting elements using large ship lifting, lifting is single
Member is temporarily supported above on bracket support, lifting elements under simply-supported state by Gravitative Loads, then based on this initial curvature into
Row closing construction.Initial deformation is offset by the way that camber is arranged in factory in advance, to guarantee linear smooth when bridge uses.It is logical
The above work progress to be crossed, dead load state pier top hogging moment is considerably reduced, part pier top structural internal force is transferred to span centre section,
So that full bridge structure uniform force.The work progress rapid and convenient.
A kind of super-span steel truss continuous bridge having initial curvature, construction method in accordance with the following steps:
S1: construction basis and bridge pier 8, and bracket is set up in bridge pier 8, each pier top trifle is completed using large ship
The lifting of the unit 4 of section integral hoisting；
S2: the big segment integral hoisting unit of the end bay with camber being prefabricated in the factory successively is lifted using large ship
1, the big segment lifting unit 2 of the first main span, the big segment lifting unit 3 of the second main span and the big segment lifting unit of other main spans
With the big segment integral hoisting unit 1 of other end end bay；
S3: beam section lifting elements, by Gravitative Loads, offset initial deformation by the camber being arranged in advance under simply-supported state,
It becomes beam section design linear 11 again, closure section component length and connecting structure size is calculated by accurate construction simulation process,
By both ends between above-mentioned each beam section lifting elements with initial curvature and the small segment integral hoisting unit 4 of pier top using bolt
Or site welding form carries out closing construction, and oblong bolt hole can be used when using bolt；
S4: second phase and accessory structure construction are carried out, 8 collateral branch's frame of bridge pier is removed.
Present invention employs the methods that the design and construction scheme of bridge structure combines, and are adjusted to bridge using work progress
Structural internal force, the effective solution economy of super-span steel truss continuous bridge and the technical problem of structure stress, avoids
It is asked using stress-free state method by the way that economy caused by the modes such as single adjustment truss depth and structural section is poor
Topic.Present invention employs the methods that the design and construction scheme of bridge structure combines, and are adjusted to bridge structure using work progress
Internal force has given full play to the stress performance in section, improves the economic performance of steel truss continuous bridge.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of super-span steel truss continuous bridge for having initial curvature, including multiple bridge piers (8), which is characterized in that in factory
Interior prefabricated each beam section lifting elements with camber, including the big segment integral hoisting unit (1) of end bay, the big segment of the first main span
The big segment lifting unit (3) of lifting elements (2), the second main span and the small segment integral hoisting unit (4) of pier top, in which:
The small segment integral hoisting unit (4) of pier top is set to other described bridge piers in addition to the bridge pier (8) of two, both ends
(8) on；
The big segment integral hoisting unit (1) of the end bay at both ends passes through the closure segment unit (5) and corresponding institute respectively
The small segment integral hoisting unit (4) of pier top is stated to be connected；The unit (4) of the small segment integral hoisting of pier top passes through the closure again
Segment unit (5) is connected with the big segment lifting unit (2) of a main span, and the big segment lifting unit (3) of second main span,
It is connect by the closure segment unit (5) with the small segment integral hoisting unit (4) of the pier top, the big segment of the second main span is hung
It fills unit (3) and the big segment lifting unit of next section of main span is small by the closure segment unit (5) and the next section of pier top again
Segment integral hoisting unit (4) connection；Closure segment unit (5) is connected to each beam section under Gravitative Loads there are initial curvature
Lifting elements, each beam section lifting elements setting camber offsets initial deformation, so that pier top structure division internal force is transferred to
Span centre section.
2. a kind of super-span steel truss continuous bridge for having initial curvature according to claim 1, which is characterized in that described
It joins the two sections of a bridge, etc segment unit (5), including closure section top boom (501), closure section web member (502) and closure section lower boom (503), it is adjacent
Upper boom between two beam section lifting elements of lifting connects and composes closure section top boom (501), and two of adjacent lifting
Web member between the beam section lifting elements connects and composes two beam sections of closure section web member (502) and adjacent lifting
Lower boom between lifting elements connects and composes closure section lower boom (503).
3. a kind of super-span steel truss continuous bridge for having initial curvature according to claim 2, which is characterized in that described
Using bolt or site welding between closure section top boom (501), closure section web member (502) and closure section lower boom (503)
The form of connecing is attached.
4. a kind of super-span steel truss continuous bridge for having initial curvature according to claim 2 or 3, which is characterized in that
When between closure section top boom (501), closure section web member (502) and closure section lower boom (503) using bolt, using length
Circular bolt holes.
5. a kind of super-span steel truss continuous bridge for having initial curvature according to claim 1, which is characterized in that described
Stiffening element (6) under being added at pier top above bridge pier (8) using integral solder form.
6. a kind of super-span steel truss continuous bridge for having initial curvature according to claim 5, which is characterized in that described
Stiffening element (6) is according to the panel length for needing to be arranged two panel lengths or four or more of stress under at pier top.
7. a kind of super-span steel truss continuous bridge for having initial curvature according to claim 2, which is characterized in that described
Continuous bridge is additionally provided with diagonal brace (7) for highway bridge stringer to be connected with lower boom.
8. a kind of super-span steel truss the continuous beam bridge construction method for having initial curvature, for building as described in claim 1-7
The super-span steel truss continuous bridge for having initial curvature, which is characterized in that include the following steps；
S1: construction basis and bridge pier (8), and bracket is set up at the bridge pier (8), each institute is completed using large ship
State the lifting of the unit (4) of the small segment integral hoisting of pier top；
S2: the big segment integral hoisting unit of the end bay with camber being prefabricated in the factory successively is lifted using large ship
(1), the big segment lifting unit (2) of the first main span, the big segment lifting unit (3) of the second main span and the big segment lifting of other main spans
The big segment integral hoisting unit (1) of end bay described in unit and the other end；
S3: each beam section lifting elements, by Gravitative Loads, offset initial become by the camber being arranged in advance under simply-supported state
Shape becomes beam section again and designs linear (11), closure section component length and connecting structure is calculated by accurate construction simulation process
Size, by above-mentioned each beam section lifting elements with initial curvature and the small segment integral hoisting unit (4) of the pier top
Between both ends using bolt or site welding form carry out closing construction, when using bolt when oblong bolt hole can be used；
S4: second phase and accessory structure construction are carried out, the bridge pier (8) collateral branch frame is removed.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629435A (en) * | 2019-01-09 | 2019-04-16 | 吴云香 | A kind of construction method for cutting down two parasitic moment of Long span prestressed continuous bridge |
| CN109722995A (en) * | 2019-02-26 | 2019-05-07 | 中铁一局集团有限公司 | A kind of large span And of Varying Depth purlin formula girder steel construction technology |
| CN113718658A (en) * | 2021-09-18 | 2021-11-30 | 中铁大桥局集团第五工程有限公司 | Butt joint method for steel trusses of cable-stayed bridge |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200279224Y1 (en) * | 2002-03-04 | 2002-06-24 | 동양종합건업 주식회사 | Multi-span continuous Preflex Composite Beam Type Bridge |
| CN101195989A (en) * | 2008-01-08 | 2008-06-11 | 长安大学 | Assembled bridge building technique based on three steel tube longeron segments |
| WO2012067306A1 (en) * | 2010-11-18 | 2012-05-24 | Yong Hee Park | Continuous composite rahmen bridge system using precast girder and construction method thereof |
| CN105648924A (en) * | 2016-01-04 | 2016-06-08 | 中交第二航务工程局有限公司 | Construction method of multi-span simply-supported steel truss girder bridge |
| CN105970836A (en) * | 2016-03-23 | 2016-09-28 | 中铁四局集团钢结构有限公司 | Method for erecting large-span lower chord variable truss high continuous steel trussed beam cantilever |
| CN106192776A (en) * | 2016-08-08 | 2016-12-07 | 中铁建大桥工程局集团第五工程有限公司 | A kind of big Span Continuous Flexible arch bridge with steel truss beam free cantilever erection construction technology |
| CN209082323U (en) * | 2018-09-13 | 2019-07-09 | 中铁第四勘察设计院集团有限公司 | A kind of super-span steel truss continuous bridge having initial curvature |
-
2018
- 2018-09-13 CN CN201811067228.7A patent/CN109056496B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200279224Y1 (en) * | 2002-03-04 | 2002-06-24 | 동양종합건업 주식회사 | Multi-span continuous Preflex Composite Beam Type Bridge |
| CN101195989A (en) * | 2008-01-08 | 2008-06-11 | 长安大学 | Assembled bridge building technique based on three steel tube longeron segments |
| WO2012067306A1 (en) * | 2010-11-18 | 2012-05-24 | Yong Hee Park | Continuous composite rahmen bridge system using precast girder and construction method thereof |
| CN105648924A (en) * | 2016-01-04 | 2016-06-08 | 中交第二航务工程局有限公司 | Construction method of multi-span simply-supported steel truss girder bridge |
| CN105970836A (en) * | 2016-03-23 | 2016-09-28 | 中铁四局集团钢结构有限公司 | Method for erecting large-span lower chord variable truss high continuous steel trussed beam cantilever |
| CN106192776A (en) * | 2016-08-08 | 2016-12-07 | 中铁建大桥工程局集团第五工程有限公司 | A kind of big Span Continuous Flexible arch bridge with steel truss beam free cantilever erection construction technology |
| CN209082323U (en) * | 2018-09-13 | 2019-07-09 | 中铁第四勘察设计院集团有限公司 | A kind of super-span steel truss continuous bridge having initial curvature |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629435A (en) * | 2019-01-09 | 2019-04-16 | 吴云香 | A kind of construction method for cutting down two parasitic moment of Long span prestressed continuous bridge |
| CN109722995A (en) * | 2019-02-26 | 2019-05-07 | 中铁一局集团有限公司 | A kind of large span And of Varying Depth purlin formula girder steel construction technology |
| CN113718658A (en) * | 2021-09-18 | 2021-11-30 | 中铁大桥局集团第五工程有限公司 | Butt joint method for steel trusses of cable-stayed bridge |
| CN113718658B (en) * | 2021-09-18 | 2023-03-14 | 中铁大桥局集团第五工程有限公司 | Butt joint method for steel trussed beams of cable-stayed bridge |
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