CN104652242B - Derrick connecting structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method - Google Patents
Derrick connecting structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method Download PDFInfo
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- CN104652242B CN104652242B CN201510051763.3A CN201510051763A CN104652242B CN 104652242 B CN104652242 B CN 104652242B CN 201510051763 A CN201510051763 A CN 201510051763A CN 104652242 B CN104652242 B CN 104652242B
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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Abstract
The invention relates to a derrick connecting structure used for reinforcing a PSC (Pre-stressed Concrete) continuous box girder bridge and a construction method. The structure comprises a derrick, a connection block, a connecting device and built-up steel placed on a center line of a bridge deck; a stress system and a stress state of the PSC continuous box girder bridge are changed by adding the derricks, so as to improve the bearing capacity. The built-up steel is anchored on a top plate of the box girder through the connecting device. The connection block is welded on the built-up steel and connected with the derrick, so that the lifting power of the derrick can be applied to the box girder, so as to initiatively strengthen the box girder. The derrick connecting structure used for reinforcing the PSC continuous box girder bridge disclosed by the invention is used in the PSC continuous beam bridge which becomes a suspension bridge or a bowstring arch bridge after being reinforced; multiple parts of the built-up steel are anchored with a girder, so that local damage is avoided and the connecting effect of the derrick and the girder can be effectively improved. The built-up steel provides upwards lifting power to the girder under the acting force of the derrick, so that the bending resistance and shear-bearing capacity of the girder are enhanced, the sagging deformation of the girder is reduced; besides, the development of the cracks in the girder can be restrained. The derrick connecting structure is efficient, simple, safe and economic.
Description
Technical field
The present invention relates to a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge and construction method (PSC：In advance should
Power armored concrete), the ruggedized construction of this invention includes suspension rod, contiguous block, attachment means and is placed on bridge floor center line
Combination shaped steel, changes PSC continuous bridge stress system and force-bearing situation by setting up suspension rod, thus improving its bearing capacity.Logical
Crossing attachment means makes combination shaped steel be anchored on box beam top board.Contiguous block is welded on combination shaped steel, and is connected with suspension rod, makes to hang
The lifting force of bar can be applied to box beam, thus carrying out to box beam actively reinforcing.The present invention be used for reinforce after become suspension bridge or
In the PSC continuous bridge of bowstring arch bridge：Shaped steel many places and girder will be combined anchor, it is to avoid local damage, and can effectively improve
Suspension rod and the connection effect of girder.Tradition is set up in the reinforcement means of suspension rod, and suspension rod is poor with the connection effect of girder, and right
Box beam local damage is serious.Combination shaped steel provides lifting force upwards under the active force of suspension rod to girder, enhances girder and resists
Curved, shear resistance, reduces girder bending-down deformation, and can suppress the development of crack in main beam.Combination shaped steel is arranged in bridge floor center
Also use as dividing strip on line.This suspension rod attachment structure can make raising PSC continuous box girder bridge bearing ability more efficient, simple
List, safety and economy.
Background technology
The main technique methods that both at home and abroad bridge is carried out with strengthening reconstruction at present are as follows：
1) increasing section method for strengthening：This method is passed through to increase the section of concrete component and is increased arrangement of reinforcement, improves component
Bearing capacity and stiffness.According to reinforcing purpose and the difference requiring, can reinforcing based on increasing section or to increase
Reinforcing based on arrangement of reinforcement.Need guarantee in reinforcing that conjunction old and new concret is good.But this method shortcoming is also clearly, due to
Dead load is inevitably increased in reinforcing, so the continuous case of large span prestressed concrete that the present invention is studied
Beam bridge is not very applicable.
2) thick reinforced deck law：The method is to cut original bridge deck pavement, again lays a layer concrete or steel
Reinforced concrete strengthening course.This method can repair the floorings diseases such as crack, stripping, and can increase original girder
Effective depth, increase girder bending resistance, improve the load relieving system of hinged girder, thus improving the carrying energy of bridge
Power.But this method, due to increased bridge deadweight, makes dead load moment of flexure increase more, and nevertheless suffers from former bridge structure lower edge
The restriction of tensile zone reinforcing bar allowable stress, so reinforcement means is typically only applicable to across footpath less tee girder bridge or plate-girder.Should
Method is not good similarly for large span prestressed concrete Continuous Box Girder Bridge consolidation effect.
3) reinforcement of beam and ribs：Reinforcement of beam and ribs is usually used in T beam and reinforces, for this kind of bridge, can be by beam
Lower end is widened, and increases cross-sectional area, and sets up stress cage bar in novel concrete section.But equally increased after increasing section
Dead load, is not suitable for large span prestressed concrete Continuous Box Girder Bridge yet and reinforces.
4) sticking carbon fiber method for strengthening：Sticking carbon fiber method for strengthening is using binding agent carbon fibre reinforced composite
(CFRP) it is pasted onto beam body concrete surface, when beam body is subject to the mobile load such as automobile, crowd, carbon fiber is coordinated with beam body concrete
Deforming and common stress, thus improve bearing capacity and the rigidity of bridge, serving reinforcement effect.But need due in construction
Paste enhancing composite to beam bottom, need workman to stand on support and smear binding agent, operation extremely inconvenience, sticking Quality is difficult
To be protected.Simultaneously as strengthening composite only participate in work when bridge is subject to mobile load, belonging to passive stress, working as increasing
When strong composite plays a role, the beam body lower flexure strain being reinforced is often larger, therefore, in large-span prestressed coagulation
In the case that native Continuous Box Girder Bridge has occurred and that larger lower flexure strain, consolidation effect is undesirable.
5) set up supporting member method for strengthening：When bridge capacity can not meet requirement, but when girder construction is substantially intact, it is
Raising bearing capacity, can method using increasing supporting member, the bearing capacity and stiffness of newly-increased component is larger.Necessary in construction
Guarantee that the connection between new and old component is reliable so as to jointly participate in stress effect, this reinforcement means construction period will be to traffic
Impact is larger, and there is the nonsynchronous problem of new and old member stress.
6) affixing steel plate reinforcement method：Using epoxy resin series adhesive by steel sticking in reinforced concrete structures
Tension side or weak part, make steel plate and original structure thing form overall common stress, improve the bending resistance of works, shear resistance and
Rigidity, improves the reinforcing bar of original structure thing and the stress state of concrete, limits crack progressing, thus improve the bearing capacity of bridge with
Durability.Similar to sticking carbon fiber method for strengthening, affixing steel plate reinforcement method also belongs to passive enforcement, is not also suitable for having sent out
The large span prestressed concrete Continuous Box Girder Bridge of raw larger lower flexure strain.
7) external prestressed strengthening method：External prestressing strengthening beam bridge, is that one kind changes the original stress of beam body
Reinforcement means.External prestressing strengthening can be considered as when bridge structure Lack of support or when needing and improving class of loading
Method.This method is to be applied with prestressed reinforcing bar or steel tendon in beam body disposed outside, to improve the force-bearing situation of bridge.This
The method of kind generally requires in beam body prestressed anchor, beam body is produced and damages；Locally excessive compression exists super
The possibility of limit, causes potential safety hazard.
8) change bridge system method for strengthening：This reinforcement means is to reduce girder planted agent by changing bridge
Power, raising bearing capacity.As set up support or bridge pier under simply supported beam；Adjacent two are connected to become continuous beam across simply supported beam.This
Plant in reinforcement means construction and often will set up bridge pier in operation under bridge, thus take under-clearance, impact traffic or bridge are let out
Flood.This reinforcing mode effect preferably, is the common measures taken solving the overweight car of temporary traffic at present both at home and abroad.After loaded vehicle passes through,
Remove interim bridge pier or support again.Attachment structure in the present invention is just used for this kind of reinforcement means, as being changed into continuous bridge is
Bar arch bridge and suspension bridge.
9) anchor spraying concrete method for strengthening：Anchor spraying concrete method for strengthening is to be arrived using the concrete of mechanical injection high pressure, high speed
So as to setting and hardening forms reinforced concrete structure on the bar-mat reinforcement having anchored, increase former bridge structure strength and stiffness.But
This kind of reinforcement means with more, can preferably solve stone arch bridge Common Diseases in mortar flag stone Arch Bridges Strengthening.
China's road Traffic Volume rapidly increases with the development of social economy；Meanwhile, design load standard in conventional specification
Value is relatively low to lead to a large amount of load carrying capacity of bridge relative deficiency, there is the potential safety hazard that can not be ignored.For current routine bridge
The situation that beam reinforcement means still has several drawbacks in raising large span prestressed concrete continuous box girder bridge bearing ability, this
Bright with existing large span prestressed concrete box girder bridge as research object, collect and analyze lead to its Lack of support bridge disease
Evil and design defect, design a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge and construction method, make raising
PSC continuous box girder bridge bearing ability more efficiently, simple, safety and economy.
Content of the invention
The purpose of the present invention is to improve to reinforce PSC Continuous Box Girder Bridge benefit, designs one kind and is used for reinforcing PSC continuous box girder
The suspension rod attachment structure of bridge and construction method, the following structural features of the present invention：
This method is applied to the PSC continuous bridge after reinforcing for suspension bridge or bowstring arch bridge, with suspension bridge system is below
Example, illustrates the reinforcement principle of suspension rod attachment structure：
Box beam top board 1 and combination shaped steel 2 pass through together with vertical prestressed reinforcement 3 and attachment means 15 anchor, cable 4,
Suspension rod 5 connects bridge tower 6 and combination shaped steel 2, and bridge tower 6 is welded on combination shaped steel 2, and cable 4 is anchored at box beam 10 two ends, suspension rod 5
There is provided vertical lifting force to combination shaped steel 2, make combination shaped steel 2 be subject to vertical lifting power, due to anchorage effect, box beam top board 1
By vertical lifting power, cable 4 turns at the top of bridge tower 6, applies pressure to bridge tower 6, and bridge tower 6 transfers the force to
Combination shaped steel 2 above bridge pier, combination shaped steel 2 delivers load to 8, No. 0 block 8 of No. 0 block of box beam and bears active force pass to again
Central bearing point bearing 9, then passes through bridge pier 10 and basis 11 is transferred to ground.The structure of so design makes to avoid to girder
Adverse effect, makes girder directly receive lifting force upwards again.Thus strengthening PSC continuous box girder bridge girder bending resistance, shearing resistance energy
Power, reduces girder bending-down deformation, and can suppress the development of crack in main beam.
Suspension rod attachment structure includes：
Box beam top board 1, combination shaped steel 2, vertical prestressed reinforcement 3, cable 4, suspension rod 5, bridge tower 6,7, No. 0 block 8 of boring, in
Fulcrum bearing 9, bridge pier 10, basis 11, vertical steel plate 12, lower horizontal steel plate 13, upper horizontal steel plate 14, attachment means 15, connection
Block 16, contiguous block bolt 17, box beam 18.
Before reinforcing, box beam 18 acts on bridge pier 10, and bridge pier 10 acts on basis 11, and basis 11 acts on ground,
The three stride continuous box girder bridge of box beam 18, bridge pier 10 and basis 11 formation standard.
Combination shaped steel 2 is welded by vertical steel plate 12, lower horizontal steel plate 13, upper horizontal steel plate 14, attachment means 15, contiguous block 16
Connect and form.Box beam 18 is PSC material structure.Get boring 7 using machinery on lower horizontal steel plate 13, so that attachment means 15 is worn
Cross, and be connected with vertical prestressed reinforcement 3, recycle attachment means 15 to be integrated combination shaped steel 2 and box beam top board 1 anchoring.
Suspension rod 5 upper end is connected with galvanized wire for suspension bridge 4, and lower end is combined on shaped steel 2 with being welded on by contiguous block bolt 17
Contiguous block 16 connects, and provides lifting force to box beam 18.
According to the architectural feature of above invention, its construction method is as follows：
On the standard three stride continuous box girder bridge of box beam 18, bridge pier 10 and basis 11 composition, process combination shaped steel 2 by Fig. 7
With upper horizontal steel plate 14, wherein go up horizontal steel plate 14 and be ultimately welded onto on combination shaped steel 2 in construction.In combination shaped steel 2 design position
Put and get boring 7.Connect vertical prestressed reinforcement 3 using attachment means 15, after bridge floor center line arrangement combinations shaped steel 2, then
It is anchored at combining shaped steel 2 on box beam top board 1 using attachment means 15.
The contiguous block processing 16 is welded on combination shaped steel 2.Connect suspension rod 5 and contiguous block using contiguous block bolt 17
16.
Each steeve tension is adjusted according to bridge specific constructive form and degree of disease, makes bridge be in good stress shape
State.Horizontal steel plate 14 in finally installation, welding, and antirust treatment is carried out to all steel beam column.
Beneficial effects of the present invention：
The present invention is a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge and construction method, by combined
Steel, suspension rod, contiguous block, the attachment means reinforcement effect to PSC Continuous Box Girder Bridge, makes Continuous Box Girder Bridge reach actively reinforcing
Effect, overcome traditional reinforcement means consolidation effect poor, damaged big to former bridge structure local location the shortcomings of, can effectively improve
Girder bending resistance, shear resistance, reduce girder bending-down deformation, and suppress the development of crack in main beam.
The machinery being related in the present invention, material are extremely widespread in bridge construction, make the practicality of this reinforcement means
It is guaranteed.The processing that are prefabricated in the factory such as combination shaped steel, anchor block, contiguous block, suspension rod, in-site installation, crudy can obtain
To ensureing, and can effective reduction of erection time.Construction area mainly separates in region in deck centre, occupies little space, no
Suspend traffic, little to traffic impact it is adaptable to the big bridge strengthening of traffic task amount.
Brief description
Fig. 1 reinforces first three across PSC Continuous Box Girder Bridge along bridge to sectional structural map；
PSC Continuous Box Girder Bridge cross-sectional view before Fig. 2 reinforcing；
Suspension bridge system bridge elevation after Fig. 3 reinforcing；
Suspension bridge system bridge 1/2 elevation after Fig. 4 reinforcing；
Box beam cross-sectional view after Fig. 5 reinforcing；
In Fig. 6 a be suspension rod and contiguous block along bridge to schematic diagram；
B is suspension rod and contiguous block direction across bridge schematic diagram；
Fig. 7 combination shaped steel and upper horizontal steel plate figure.
Box beam top board 1, combination shaped steel 2, vertical prestressed reinforcement 3, cable 4, suspension rod 5, bridge tower 6,7, No. 0 block 8 of boring, in
Fulcrum bearing 9, bridge pier 10, basis 11, vertical steel plate 12, lower horizontal steel plate 13, upper horizontal steel plate 14, attachment means 15, connection
Block 16, contiguous block bolt 17, box beam 18.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention is further described；
Utilize a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge and the construction method of above-mentioned design, specifically
Step is as follows：
Step one：Inspection information is simultaneously surveyed and is obtained bridge structure, disease conditions, and exploration obtains pre-reinforcement bridge to be needed to improve
Bearing capacity size, for obtaining Construction of Pylon of Long Span Suspension Bridge or bowstring arch bridge arch rib, combination shaped steel, suspension rod, contiguous block, attachment means
Stressing conditions, thereby determine that required number, size, steel grade and the concrete deployment scenarios of each part.
Step 2：Determined and hung by the version of the stressing conditions obtaining in step one and suspension rod, contiguous block, combination shaped steel
Bar erection sequence and each pulling force.
Step 3：Job site mechanical work ability is considered in the lump according to step, by factory process Construction of Pylon of Long Span Suspension Bridge or be
Bar arch rib (sections), combination shaped steel (sections).Boring size is determined by attachment means size.In single combination shaped steel sections
In length, lower horizontal steel plate 13 is got with several borings 7.Cut bridge floor centerline deck paving, expose vertical prestressing steel
Muscle 3, connects vertical prestressed reinforcement 3 using attachment means 15, after bridge floor center line arrangement combinations shaped steel 2, recycles and connects
Device 15 is anchored at combining shaped steel 2 on box beam top board 1.
Step 4：It is welded to connect block 16 in combination shaped steel 2 design attitude, be linked in sequence suspension rod using contiguous block bolt 17
5.Strict control welding quality in construction.For reducing temperature to assembled, welding quality harmful effect, should select euthermic
Time period is constructed.
Step 5：Reinforcing process Bridge structural system changes, and leads to bridge structure internal force redistribution to occur, therefore
Need to adjust steeve tension.According to step 2, by design requirement, suspension rod is installed, and adjusts steeve tension.The pulling force of suspension rod is correct
Be whether the important factor in order of consolidation effect, need reliable method to measure the pulling force of each stage suspension rod, if any deviation, should and
When adjustment, in order to avoid unfavorable to bridge.
Step 6：The local punching that upper horizontal steel plate 14 passes through in suspension rod 5, is welded with vertical steel plate 12 after splicing.To institute
Steel beam column is had to carry out anti-corrosion, antirust treatment, then continuous bridge is reinforced and completed.
The above, be only presently preferred embodiments of the present invention, not the present invention is done with any pro forma restriction, appoints
Without departing from technical solution of the present invention content, the technical spirit according to the present invention any is simply repaiied to made for any of the above embodiments for what
Change, equivalent variations and modification, all still fall within the range of technical solution of the present invention.
Claims (3)
1. a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge it is characterised in that：It includes combining shaped steel (2), cable
Rope (4), suspension rod (5), bridge tower (6), boring (7), vertical steel plate (12), lower horizontal steel plate (13), upper horizontal steel plate (14), connection
Device (15), contiguous block (16) and contiguous block bolt (17)；
Before reinforcing, box beam (18) acts on bridge pier (10), and bridge pier (10) acts on basic (11), and basic (11) act on ground
On base, box beam (18), bridge pier (10) and basic (11) form Continuous Box Girder Bridge；
Combination shaped steel (2) is by vertical steel plate (12), lower horizontal steel plate (13), upper horizontal steel plate (14), attachment means (15), connection
Block (16) is welded；Get boring (7) using machinery on lower horizontal steel plate (13), so that attachment means (15) is passed through, and with
Vertical prestressed reinforcement (3) connects, and recycling attachment means (15) will combine shaped steel (2) and box beam top board (1) anchoring is integrated；
Suspension rod (5) upper end is connected with galvanized wire for suspension bridge (4), and lower end combines shaped steel (2) by contiguous block bolt (17) with being welded on
On contiguous block (16) connect, to box beam (18) provide lifting force.
2. the construction method of a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge according to claim 1, its
It is characterised by, step is as follows：
Step one：Inspection information is simultaneously surveyed and is obtained bridge structure, disease conditions, and what exploration obtained that pre-reinforcement bridge needs improve holds
Load power size, for obtaining the stressing conditions of Construction of Pylon of Long Span Suspension Bridge, combination shaped steel, suspension rod, contiguous block, attachment means, thereby determines that
The required number of each part, size, steel grade and concrete deployment scenarios；
Step 2：Determine that suspension rod is pacified by the version of the stressing conditions obtaining in step one and suspension rod, contiguous block, combination shaped steel
Dress order and each pulling force；
Step 3：Consider job site mechanical work ability, by factory process Construction of Pylon of Long Span Suspension Bridge or bowstring arch bridge arch rib, combined
Steel；Boring size is determined by attachment means size；To lower horizontal steel plate (13) if getting in single combination shaped steel segmental length
Dry boring (7)；Cut bridge floor centerline deck paving, expose vertical prestressed reinforcement (3), using attachment means (15) even
Connect vertical prestressed reinforcement (3), after bridge floor center line arrangement combinations shaped steel (2), recycling attachment means (15) will be combined
Steel (2) is anchored on box beam top board (1)；
Step 4：It is welded to connect block (16) in combination shaped steel (2) design attitude, be linked in sequence using contiguous block bolt (17) and hang
Bar (5)；
Step 5：By design requirement, suspension rod is installed, and adjusts steeve tension；
Step 6：The local punching that upper horizontal steel plate (14) passes through in suspension rod (5), is welded with vertical steel plate (12) after splicing；Right
All steel beam column carry out anti-corrosion, antirust treatment, then continuous bridge is reinforced and completed.
3. a kind of suspension rod attachment structure for reinforcing PSC Continuous Box Girder Bridge according to claim 1 it is characterised in that：
Its except be applied to standard three across and for single box double room PSC Continuous Box Girder Bridge in addition to, also be suitable for include：The spanning type of multispan beam with
It is combined into the PSC Continuous Box Girder Bridge of each class formation between single box single chamber, single-box multi-cell, the chamber type of many casees multicell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510051763.3A CN104652242B (en) | 2015-02-01 | 2015-02-01 | Derrick connecting structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method |
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| CN201510051763.3A CN104652242B (en) | 2015-02-01 | 2015-02-01 | Derrick connecting structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method |
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| CN104652242B true CN104652242B (en) | 2017-02-22 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268458B (en) * | 2017-06-14 | 2023-01-31 | 沈阳建筑大学 | Double-width continuous rigid frame bridge tie rod arch reinforcing structure and construction method thereof |
| CN107100094B (en) * | 2017-06-14 | 2023-01-31 | 沈阳建筑大学 | Continuous rigid frame bridge tie rod arch reinforcing structure and construction method thereof |
| CN107460833A (en) * | 2017-08-25 | 2017-12-12 | 中铁大桥勘测设计院集团有限公司 | For improving the system of continuous beam bridge bearing capacity and bridge containing the system |
| CN111236049A (en) * | 2020-03-16 | 2020-06-05 | 中铁二院工程集团有限责任公司 | External prestress steering structure |
| CN113026530A (en) * | 2020-12-31 | 2021-06-25 | 武汉鑫拓力工程技术有限公司 | Connecting structure of suspender and bridge |
| CN115323941B (en) * | 2022-05-18 | 2024-06-14 | 山东交通学院 | Assembly and method for reinforcing a continuous box girder bridge |
| CN114892550A (en) * | 2022-05-27 | 2022-08-12 | 江苏科技大学 | Beam bridge reinforcing device and implementation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000064228A (en) * | 1998-08-21 | 2000-02-29 | Kawada Industries Inc | Erection method for box girder bridge |
| CN202247664U (en) * | 2011-06-10 | 2012-05-30 | 广东工业大学 | Externally-bonded steel plate and structural steel structure for improving anti-shearing bearing force of concrete box girders and T-shaped girders |
| CN103410090A (en) * | 2013-05-16 | 2013-11-27 | 湖州交通规划设计院 | Suspender anchoring structure of initiative-reinforcement concrete tied-arch bridge and construction method thereof |
| CN104264594A (en) * | 2014-09-10 | 2015-01-07 | 北京工业大学 | Self-balancing tied arch system for improving bearing force of PSC continuous box girder bridge and reinforcing method by applying self-balancing tie bar arch system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9388589B2 (en) * | 2013-05-21 | 2016-07-12 | Safway Services, Llc | Work platform system including suspended paneled portion and method of implementing same |
-
2015
- 2015-02-01 CN CN201510051763.3A patent/CN104652242B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000064228A (en) * | 1998-08-21 | 2000-02-29 | Kawada Industries Inc | Erection method for box girder bridge |
| CN202247664U (en) * | 2011-06-10 | 2012-05-30 | 广东工业大学 | Externally-bonded steel plate and structural steel structure for improving anti-shearing bearing force of concrete box girders and T-shaped girders |
| CN103410090A (en) * | 2013-05-16 | 2013-11-27 | 湖州交通规划设计院 | Suspender anchoring structure of initiative-reinforcement concrete tied-arch bridge and construction method thereof |
| CN104264594A (en) * | 2014-09-10 | 2015-01-07 | 北京工业大学 | Self-balancing tied arch system for improving bearing force of PSC continuous box girder bridge and reinforcing method by applying self-balancing tie bar arch system |
Non-Patent Citations (1)
| Title |
|---|
| 大跨径连续梁、连续刚构桥新型加固方法研究;刘铁锁等;《公路交通科技(应用技术版)》;20120731(第7期);第84-88页 * |
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