CN104652293B - A kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method - Google Patents
A kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method Download PDFInfo
- Publication number
- CN104652293B CN104652293B CN201510052378.0A CN201510052378A CN104652293B CN 104652293 B CN104652293 B CN 104652293B CN 201510052378 A CN201510052378 A CN 201510052378A CN 104652293 B CN104652293 B CN 104652293B
- Authority
- CN
- China
- Prior art keywords
- bridge
- steel
- shaped steel
- drag
- line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/04—Cable-stayed bridges
Abstract
The present invention relates to a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method, this structure includes bridge tower, drag-line and the combination shaped steel being placed on bridge floor centrage, change PSC continuous bridge force-bearing situation by cable-stayed bridge system, improve its bearing capacity。Made on shaped steel anchorage box back plate by connecting device。Bridge tower is welded on combination shaped steel, is connected bridge tower and combination shaped steel by drag-line。Tradition cable-stayed bridge in, in be subject to very big axial tension across span centre cordless region girder；And bridge tower root girder is subject to very big axial tension。Combination shaped steel is anchored on girder by the present invention, and connect combination shaped steel with drag-line, so excessive axial tension, pressure all act on combination shaped steel, girder is had no adverse effect, and combine shaped steel and under drag-line active force, girder is provided lifting force upwards, enhance girder bending resistance, shear resistance, reduce girder bending-down deformation, and the development of crack in main beam can be suppressed。The present invention efficiently, simple, safety and economy。
Description
Technical field
The present invention relates to a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method (PSC: prestressed reinforced concrete), the ruggedized construction of this invention includes bridge tower, drag-line and the combination shaped steel being placed on bridge floor centrage, PSC continuous bridge force-bearing situation is changed, thus improving its bearing capacity by cable-stayed bridge system。Made on shaped steel anchorage box back plate by connecting device。Bridge tower is welded on combination shaped steel, is connected bridge tower and combination shaped steel by drag-line。Tradition cable-stayed bridge in, in be subject to very big axial tension across span centre cordless region girder；And bridge tower root girder is subject to very big axial tension。Girder is all had a negative impact by excessive pulling force, pressure。Combination shaped steel is anchored on girder by the present invention, and connect combination shaped steel with drag-line, so excessive axial tension, pressure all act on combination shaped steel, girder is had no adverse effect, and combine shaped steel and under drag-line active force, girder is provided lifting force upwards, enhance girder bending resistance, shear resistance, reduce girder bending-down deformation, and the development of crack in main beam can be suppressed。The reinforcement means of this cable-stayed bridge can make raising PSC continuous box girder bridge bearing ability more efficiently, simple, safety and economy。
Background technology
The main technique methods that bridge carries out strengthening reconstruction at present both at home and abroad is as follows:
1) increasing section method for strengthening: this method, by increasing the cross section of concrete component and increasing arrangement of reinforcement, improves the bearing capacity and stiffness of component。According to the difference reinforcing purpose and requirement, it is possible to increasing section is main reinforcing, it is also possible to be the reinforcing to increase arrangement of reinforcement。Reinforcing need guaranteeing, conjunction old and new concret is good。But this method shortcoming is also clearly, owing to inevitably increasing dead load in reinforcing, so the large span prestressed concrete Continuous Box Girder Bridge studied for the present invention is not as applicable。
2) bridge floor plate reinforcement method is thickeied: the method is to cut original bridge deck pavement, again lays a layer concrete or armored concrete strengthening course。This method can repair the floorings disease such as crack, stripping occurred, can increase again the effective depth of original girder, increasing the bending resistance of girder, improving the load relieving system of hinged girder, thus improving the bearing capacity of bridge。But this method is owing to adding bridge deadweight, makes dead load moment of flexure increase more, and nevertheless suffers from the restriction of former bridge structure lower edge tensile zone reinforcing bar allowable stress, so reinforcement means is generally only applicable to the tee girder bridge less across footpath or plate-girder。The method is not good similarly for large span prestressed concrete Continuous Box Girder Bridge consolidation effect。
3) beam rib reinforcement method is increased: increase beam rib reinforcement method and be usually used in the reinforcing of T beam, for this kind of bridge, it is possible to widened the lower end of beam, increase cross-sectional area, and set up, in novel concrete cross section, muscle of being advocated。But add dead load after increasing section equally, be not also suitable for large span prestressed concrete Continuous Box Girder Bridge and reinforce。
4) sticking carbon fiber method for strengthening: sticking carbon fiber method for strengthening is to utilize binding agent carbon fibre reinforced composite (CFRP) to be pasted onto beam body concrete surface, when beam body is subject to the mobile load such as automobile, crowd, carbon fiber and beam body concrete compatible deformation and common stress, thus improve bearing capacity and the rigidity of bridge, serve reinforcement effect。But owing to construction needing paste reinforced composite at the bottom of beam, it is necessary to worker stands smears binding agent on support, and operation is inconvenience extremely, and sticking Quality is difficult to be protected。Simultaneously, only participate in work when bridge is subject to mobile load due to reinforced composite, belong to passive stress, when reinforced composite plays a role, the beam body lower flexure strain being reinforced is often bigger, therefore, when large span prestressed concrete Continuous Box Girder Bridge has occurred and that bigger lower flexure strain, consolidation effect is undesirable。
5) supporting member method for strengthening is set up: when bridge capacity can not meet requirement, but when girder construction is substantially intact, in order to improve bearing capacity, it is possible to adopting the method increasing supporting member, the bearing capacity and stiffness of newly-increased component is bigger。Must assure that in construction that the connection between new and old component is reliable so that it is common participation stress effect, this reinforcement means construction period is relatively big to traffic impact, and there is the nonsynchronous problem of new and old member stress。
6) affixing steel plate reinforcement method: utilize epoxy resin series adhesive by the steel sticking tension side at reinforced concrete structures or weak part, steel plate and original structure thing is made to form overall common stress, improve the bending resistance of works, shear resistance and rigidity, improve the reinforcing bar of original structure thing and concrete stress state, restriction crack progressing, thus improving bearing capacity and the durability of bridge。Similar to sticking carbon fiber method for strengthening, affixing steel plate reinforcement method also belongs to passive enforcement, is not also suitable for the large span prestressed concrete Continuous Box Girder Bridge having occurred and that bigger lower flexure strain。
7) external prestressing strengthening method: external prestressing strengthening beam bridge, is a kind of reinforcement means changing the original stress of beam body。When bridge structure Lack of support or need improve class of loading time can be considered as external prestressing strengthening 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 method generally requires at beam body prestressed anchor, and beam body is produced damage；There is the probability transfinited in locally excessive compressive stress, causes potential safety hazard。
8) bridge system method for strengthening is changed: this reinforcement means is to be reduced girder internal stress by change bridge, improved bearing capacity。As set up support or bridge pier under simply supported beam；It is connected to become continuous beam across simply supported beam by adjacent two。The construction of this reinforcement means often to set up bridge pier in operation under bridge, thus takies under-clearance, affect traffic or bridge flood discharge。This reinforcing mode effect is better, is the common measures taken solving the overweight car of temporary traffic at present both at home and abroad。After loaded vehicle is current, then remove interim bridge pier or support。Reinforcement means in the present invention just belongs to this method。
9) anchor spraying concrete method for strengthening: anchor spraying concrete method for strengthening is to utilize mechanical injection high pressure, concrete at a high speed to the bar-mat reinforcement anchored so that it is setting and hardening forms reinforced concrete structure, increases former bridge structure strength and stiffness。But this kind of reinforcement means uses more in mortar flag stone Arch Bridges Strengthening, stone arch bridge Common Diseases can be solved preferably。
China's road Traffic Volume rapidly increases with socioeconomic development；Meanwhile, in conventional specification, design load standard value is relatively low causes a large amount of load carrying capacity of bridge relative deficiency, there is the potential safety hazard that can not be ignored。For the situation that current conventional bridge reinforcing method still has several drawbacks when improving large span prestressed concrete continuous box girder bridge bearing ability, the present invention is with existing large span prestressed concrete box girder bridge for object of study, collect and analyze the bridge defect and design defect that cause its Lack of support, design a kind of Cable-Stayed Bridge 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。
Summary of the invention
It is an object of the invention to improve and reinforce PSC Continuous Box Girder Bridge benefit, design a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method, the following structural features of the present invention:
The reinforcement principle of Cable-Stayed Bridge Structure:
Box beam top board 1 and combination shaped steel 2 are by together with vertical prestressed reinforcement 3 and connecting device 10 be anchored at, drag-line 4 connects bridge tower 5 and combination shaped steel 2, bridge tower 5 is welded on combination shaped steel 2, combination shaped steel 2 is applied pulling force by drag-line 4, combination shaped steel 2 is made to be subject to axle power and vertical lifting power, due to anchorage effect, box beam top board 1 is also affected by vertical lifting power, bridge tower 5 is subject to the pulling force of drag-line 4, bridge tower 5 transfers the force to the combination shaped steel 2 above bridge pier, combination shaped steel 2 delivers load to No. 0 block 6 of box beam again, No. 0 block 6 bears active force and passes to central bearing point bearing 7, then pass through bridge pier 8 and basis 9 is transferred to ground。Combination shaped steel is subject to axial compressive force at region AB, CD, in cordless region, BC is subject to axial tension, so excessive pressure, pulling force undertake rather than girder self by combining shaped steel, it is to avoid the excessive axle power adverse effect to girder, makes girder receive lifting force upwards simultaneously。Thus strengthening PSC continuous box girder bridge girder bending resistance, shear resistance, reducing girder bending-down deformation, and the development of crack in main beam can be suppressed。
Cable-Stayed Bridge Structure includes:
Box beam top board 1, combination shaped steel 2, vertical prestressed reinforcement 3, drag-line 4,5, No. 0 block 6 of bridge tower, central bearing point bearing 7, bridge pier 8, basis 9, connecting device the 10, first boring 11, steel for wire drawing 12, anchor-hold block 13, baffle plate 14, local strengthening steel plate 15, steel anchor crossbeam 16, bracket 17, steel for wire drawing 18, box beam the 19, second boring 20, vertical steel plate 21, lower horizontal steel plate 22 and upper horizontal steel plate 23。
Before reinforcing, box beam 19 acts on bridge pier 8, and bridge pier 8 acts on basis 9, and basis 9 acts on ground, and box beam 19, bridge pier 8 and basis 9 form the three stride continuous box girder bridge of standard。
Combination shaped steel 2 is welded by vertical steel plate 21, lower horizontal steel plate 22, upper horizontal steel plate 23, anchor-hold block 13, baffle plate 14, local strengthening steel plate 15。Box beam 19 is PSC material structure。Using machinery to get the first boring 11 on lower horizontal steel plate 22, connecting device 10 is connected with vertical prestressed reinforcement 3, and combination shaped steel 2 and box beam top board 1 anchoring is integrated。
Bridge tower 5 is welded on combination shaped steel 2, and bridge tower 5 is made up of steel anchor crossbeam 16, bracket 17。Steel anchor crossbeam 16 is used for undertaking the horizontal force of drag-line 4, and the vertical stress component of drag-line 4 is passed to bridge tower 5 by bracket 17, and such structure makes bridge tower 5 be in pressured state as far as possible。It is excessive and destroy that the steel anchor crossbeam 16 being arranged so as to and bracket 17 avoid bridge tower and drag-line junction stress。
Drag-line is made up of drag-line 4, steel for wire drawing 12, steel for wire drawing 18。Drag-line 4 is anchored on combination shaped steel 2 and bridge tower 5 by steel for wire drawing 12, steel for wire drawing 18 respectively。
Architectural feature according to above invention, its construction method is as follows:
On the standard three stride continuous box girder bridge of box beam 19, bridge pier 8 and basis 9 composition, process combination shaped steel 2 by Fig. 8, wherein go up horizontal steel plate 23 and be ultimately welded onto on combination shaped steel 2 in construction。The first boring 11 is got at combination shaped steel 2 design attitude。Utilizing connecting device 10 to connect vertical prestressed reinforcement 3, after bridge floor centrage arrangement combinations shaped steel 2, combination shaped steel 2 is anchored on box beam top board 1 by recycling connecting device 10。
Processing bridge tower 5 sections, on-the-spot splicing welding bridge tower 5 sections also installs steel anchor crossbeam 16。Utilize hoist engine, pulley to promote each drag-line, draw to after in place in bridge tower duct, fixing with steel for wire drawing 18。Equally beam-ends drag-line is installed, anchor with steel for wire drawing 12 after utilizing each drag-line of jack tension。Adjust each Cable power according to bridge structure form and degree of disease, make bridge be in good stress。Horizontal steel plate 23 in finally installation, welding, and all steel beam column are carried out antirust treatment。
Beneficial effects of the present invention:
The present invention is a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method, by the effect that PSC Continuous Box Girder Bridge is reinforced by combination shaped steel, drag-line, bridge tower, Continuous Box Girder Bridge is made to have reached the effect actively reinforced, overcome tradition reinforcement means consolidation effect poor, to the former bridge structure local location breakage shortcoming such as big, girder bending resistance, shear resistance can be effectively improved, reduce girder bending-down deformation, and suppress the development of crack in main beam。
The machinery, the material that relate in the present invention are extremely widespread in bridge construction, make the practicality of this reinforcement means be guaranteed。Bridge tower, combination shaped steel, steel anchor crossbeam are prefabricated in the factory processing, on-site consolidation, and crudy can be protected, and can effective reduction of erection time。Construction area mainly, in deck centre dividing strip region, occupies little space, and uninterrupted traffic is little to traffic impact, it is adaptable to the bridge strengthening that traffic task amount is big。
Accompanying drawing explanation
Fig. 1 reinforce first three across PSC Continuous Box Girder Bridge along bridge to sectional structural map；
Cable-stayed bridge system bridge elevation after Fig. 2 reinforcing；
Cable-stayed bridge system bridge 1/2 elevation after Fig. 3 reinforcing；
Fig. 4 reinforces front box beam cross-sectional view；
Box beam cross-sectional view after Fig. 5 reinforcing；
Fig. 6 combines shaped steel sections elevation (before installing horizontal steel plate)；
Fig. 7 combines shaped steel sections graphics；
Fig. 8 bridge tower direction across bridge layout drawing。
The forward and backward stress sketch of Fig. 9 bridge strengthening。
A) continuous bridge elevation
B) continuous bridge Gravitative Loads lower stress figure
C) bending moment diagram (unit: kN m) under continuous bridge Gravitative Loads
D) become cable-stayed bridge system after reinforcing and be subject to lifting force upwards
E) bending moment diagram (unit: kN m) under cable-stayed bridge system Gravitative Loads is become after reinforcing
Wherein box beam top board 1, combination shaped steel 2, vertical prestressed reinforcement 3, drag-line 4,5, No. 0 block 6 of bridge tower, central bearing point bearing 7, bridge pier 8, basis 9, connecting device 10, first hole 11, steel for wire drawing 12, anchor-hold block 13, baffle plate 14, local strengthening steel plate 15, steel anchor crossbeam 16, bracket 17, steel for wire drawing 18, box beam 19, second hole 20, vertical steel plate 21, lower horizontal steel plate 22, upper horizontal steel plate 23。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further described；
Utilize above-mentioned design a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method, specifically comprise the following steps that
Step one: inspection information actual measurement obtain bridge structure, disease conditions, exploration obtains the bearing capacity size that pre-reinforcement bridge needs to improve, it is used for obtaining the stressing conditions of bridge tower, drag-line, combination shaped steel, connecting device, thereby determines that the required number of each parts, size, steel grade and concrete deployment scenarios。
Step 2: by the stressing conditions obtained in step one and bridge tower, drag-line, combination shaped steel version determine cable tension order and each stretching force。
Step 3: consider job site mechanical work ability according to step in the lump, by factory process bridge tower (sections), combination shaped steel (sections), steel anchor crossbeam。Boring size is determined by connecting device size。Lower horizontal steel plate 22 is got several the first boring 11, cut bridge floor centerline deck paving, expose vertical prestressed reinforcement 3, connecting device 10 is utilized to connect vertical prestressed reinforcement 3, after bridge floor centrage arrangement combinations shaped steel 2, combination shaped steel 2 is anchored on box beam top board 1 by recycling connecting device 10。
Step 4: section is installed section by section, welding bridge tower sections extremely combines on shaped steel 2。On bridge tower, installation floater makes platform simultaneously, provides facility during for installing drag-line。Strict control splicing accuracy and welding quality in construction。For reducing temperature to harmful effect assembled, welding quality, the euthermic time period should be selected to construct。
Step 5: install pulley on bridge tower 5, hoist engine promotes drag-line, and traction cable is to after in place in bridge tower 5 duct, anchoring with steel for wire drawing 18 in order。The drag-line other end is installed on combination shaped steel 2, and anchors with steel for wire drawing 12。
Step 6: reinforcing process Bridge structural system changes, causes bridge structure internal force generation redistribution, it is therefore desirable to adjust Cable power。According to step 2, the pulling force of stretch-draw drag-line to each time in order。The Suo Li correctness of drag-line is one of important factor in order of consolidation effect, applies reliable method and measures the Suo Li of each stage drag-line, if any deviation, should adjust in time, so as not to bridge is unfavorable。
Step 7: upper horizontal steel plate 23 (sections) gets the second boring 20 in the place of drag-line traverse, to welding after its splicing。All steel beam column are carried out anticorrosion, antirust treatment, then continuous bridge has been reinforced。
The present invention adopts cable-stayed bridge system carry out the reinforcing of continuous bridge, axle power is applied to combination shaped steel, bridge is only applied lifting force straight up。Stress in the present invention illustrates as follows, and wherein bridge span takes 60m+90m+90m, and bridge is from refetching q=600kN/m, and often place's lifting force all takes 1500kN。
Forward and backward stress contrast table (unit: kN m) reinforced by table 1
| End bay M | Central bearing point | In across | |
| Before reinforcing | 118846 | -363461 | 244038 |
| After reinforcing | 95389 | -227948 | 169551 |
| After reinforcing/reinforce before | 80.3% | 62.7% | 69.5% |
Sum up: by stress sketch Fig. 9 and stress contrast table it can be seen that reinforce axle casing internal force under Gravitative Loads and substantially reduce, bridge can be carried out " Reduction of Students' Study Load ", illustrate that the reinforcement means effect in the present invention is obvious。
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, any without departing from technical solution of the present invention content, the technical spirit of the foundation present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still falls within the scope of technical solution of the present invention。
Claims (3)
1. the Cable-Stayed Bridge Structure being used for reinforcing PSC Continuous Box Girder Bridge, it is characterized in that: include box beam top board (1), combination shaped steel (2), vertical prestressed reinforcement (3), drag-line (4), bridge tower (5), No. 0 block (6), central bearing point bearing (7), bridge pier (8), basis (9), connecting device (10), first boring (11), first steel for wire drawing (12), anchor-hold block (13), baffle plate (14), local strengthening steel plate (15), steel anchor crossbeam (16), bracket (17), second steel for wire drawing (18), box beam (19), second boring (20), vertical steel plate (21), lower horizontal steel plate (22) and upper horizontal steel plate (23)；
Before reinforcing, box beam (19) acts on bridge pier (8), bridge pier (8) acts on basis (9), basis (9) acts on ground, and box beam (19), bridge pier (8) and basis (9) form Continuous Box Girder Bridge；
Combination shaped steel (2) is welded by vertical steel plate (21), lower horizontal steel plate (22), upper horizontal steel plate (23), anchor-hold block (13), baffle plate (14), local strengthening steel plate (15)；Machinery is used to get the first boring (11) on lower horizontal steel plate (22), connecting device (10) is connected with vertical prestressed reinforcement (3), and combination shaped steel (2) and box beam top board (1) anchoring is integrated；
Bridge tower (5) is welded in combination shaped steel (2), and bridge tower (5) is made up of steel anchor crossbeam (16), bracket (17)；Steel anchor crossbeam (16) is used for undertaking the horizontal force of drag-line (4), and the vertical stress component of drag-line (4) is passed to bridge tower (5) by bracket (17)；
Drag-line is made up of drag-line (4), the first steel for wire drawing (12), the second steel for wire drawing (18)；First steel for wire drawing (12), the second steel for wire drawing (18) are anchored on combination shaped steel (2) and bridge tower (5) respectively。
2. the construction method of a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge according to claim 1, it is characterised in that construction procedure is as follows:
Step one: inspection information actual measurement obtain bridge structure, disease conditions, exploration obtains the bearing capacity size that pre-reinforcement bridge needs to improve, it is used for obtaining the stressing conditions of bridge tower, drag-line, combination shaped steel, connecting device, thereby determines that the required number of each parts, size, steel grade and concrete deployment scenarios；
Step 2: by the stressing conditions obtained in step one and bridge tower, drag-line, combination shaped steel version determine cable tension order and each stretching force；
Step 3: consider job site mechanical work ability according to step in the lump, by factory process bridge tower, combination shaped steel, steel anchor crossbeam；Boring size is determined by connecting device size；Lower horizontal steel plate (22) is got several the first boring (11), cut bridge floor centerline deck paving, expose vertical prestressed reinforcement (3), connecting device (10) is utilized to connect vertical prestressed reinforcement (3), after bridge floor centrage arrangement combinations shaped steel (2), combination shaped steel (2) is anchored on box beam top board (1) by recycling connecting device (10)；
Step 4: section is installed, welded bridge tower sections to combining on shaped steel (2) section by section；On bridge tower, installation floater makes platform simultaneously, provides facility during for installing drag-line；
Step 5: install pulley on bridge tower (5), hoist engine promotes drag-line, traction cable is to after in place in bridge tower (5) duct in order, with the second steel for wire drawing (18) anchoring；By the drag-line other end in the upper installation of combination shaped steel (2), and anchor with the first steel for wire drawing (12)；
Step 6: the pulling force of stretch-draw drag-line to each time in order；
Step 7: upper horizontal steel plate (23) gets the second boring (20) in the place of drag-line traverse, to welding after its splicing；All steel beam column are carried out anticorrosion, antirust treatment, then continuous bridge has been reinforced。
3. a kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge according to claim 1, it is characterized in that: its except suitable in standard three across and PSC Continuous Box Girder Bridge for single box double room except, be also suitable for and include: two bridge, three bridge, the spanning type of multispan beam and single box single chamber, single box double room, single-box multi-cell, many casees multicell chamber type between be combined into the PSC Continuous Box Girder Bridge of each class formation。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052378.0A CN104652293B (en) | 2015-02-01 | 2015-02-01 | A kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510052378.0A CN104652293B (en) | 2015-02-01 | 2015-02-01 | A kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104652293A CN104652293A (en) | 2015-05-27 |
| CN104652293B true CN104652293B (en) | 2016-06-22 |
Family
ID=53243889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510052378.0A Active CN104652293B (en) | 2015-02-01 | 2015-02-01 | A kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104652293B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603890A (en) * | 2015-11-16 | 2016-05-25 | 上海应用技术学院 | Extradosed type external cable reinforced girder bridge |
| CN106012872B (en) * | 2016-06-28 | 2019-03-12 | 山东大学 | Continuous rigid frame bridge without dorsal funciculus oblique pull reinforcement system and construction method |
| CN106836028B (en) * | 2017-04-12 | 2019-04-09 | 云南云岭高速公路工程咨询有限公司 | The concrete continuous rigid structure beam bridge and construction method reinforced with steel truss girder jacking |
| 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 |
| CN107119582B (en) * | 2017-06-14 | 2023-01-10 | 沈阳建筑大学 | T-shaped rigid frame bridge back tower cable-stayed reinforcing structure and construction method thereof |
| CN107151987A (en) * | 2017-06-14 | 2017-09-12 | 沈阳建筑大学 | A kind of the oblique pull ruggedized construction and its construction method of the T-shaped rigid frame bridge of double width |
| CN107119583A (en) * | 2017-06-14 | 2017-09-01 | 沈阳建筑大学 | A kind of T-shaped rigid frame bridge back of the body tower oblique pull ruggedized construction of double width and its construction method |
| CN109024319B (en) * | 2018-09-21 | 2023-12-15 | 湖北省交通规划设计院股份有限公司 | Low-tower cable-stayed bridge reinforcing structure of double-amplitude continuous rigid frame bridge and construction method |
| CN113356081B (en) * | 2021-07-15 | 2023-03-17 | 中交一公局集团有限公司 | Bridge incremental launching construction method and bridge precast beam structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006009449A (en) * | 2004-06-28 | 2006-01-12 | Kajima Corp | Truss panel girder and precast truss panel |
| CN201169752Y (en) * | 2007-12-20 | 2008-12-24 | 中铁大桥勘测设计院有限公司 | Steel structure anchoring steering system of external prestress for reinforcing old bridge |
| CN101424075B (en) * | 2008-11-24 | 2010-10-20 | 重庆交通大学 | Concrete box girder bridge widening and reinforced structure and construction method thereof |
| CN202047377U (en) * | 2011-04-26 | 2011-11-23 | 中铁二院工程集团有限责任公司 | Reinforcing structure of concrete box girder |
-
2015
- 2015-02-01 CN CN201510052378.0A patent/CN104652293B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104652293A (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104652293B (en) | A kind of Cable-Stayed Bridge Structure for reinforcing PSC Continuous Box Girder Bridge and construction method | |
| CN104652244B (en) | A kind of Suspension bridge structure for reinforcing PSC Continuous Box Girder Bridge and construction method | |
| CN203603029U (en) | Shearing force connecting piece and composite beam with same | |
| CN106869012B (en) | Using the prefabricated thin-wall bent cap of prestressing with bond system | |
| CN103590322A (en) | Shear force connecting part, combination beam comprising same and construction method of combination beam | |
| CN109853381B (en) | Transitional structure for preventing bridge head from jumping and construction method thereof | |
| CN111455859A (en) | Construction method for bracket of No. 0 and No. 1 steel bridge with high piers and continuous steel structure | |
| CN104652242B (en) | Derrick connecting structure used for reinforcing PSC (Pre-stressed Concrete) continuous box girder bridge and construction method | |
| CN108867310A (en) | The short rib T beam bridge of pretensioning prestressed concrete and its construction method | |
| CN103726586A (en) | H-shaped steel and steel plate framework assembly shear wall with interfaces with grooves and manufacturing method | |
| CN108914778A (en) | The method that the concrete slab of a kind of pair of combination beam top flange applies precompression | |
| CN104963299B (en) | The wide shear beam of prestressed concrete box girder spelling is rigidly connected and constructs and construction technology | |
| KR20010054105A (en) | Method to reinforce the endurance force of structure using tensile beam | |
| CN106012872A (en) | Dorsal-funiculus-free cable-stayed reinforcing system of continuous rigid frame bridge and construction method | |
| CN109162204B (en) | Construction method for transverse block rapid assembling of bridge substructure | |
| CN101144260B (en) | Prestressing applying method for concrete genuine bridge construction | |
| CN110184948A (en) | A kind of Bridge beam construction method | |
| CN106758773A (en) | A kind of shear connector of steel reinforced concrete composite beam bridge | |
| Yang et al. | Experimental study on seismic behavior of a new precast shear wall system with angle steel connectors | |
| CN210827072U (en) | Middle seamless telescopic structure of middle and small-span simply-supported highway bridge | |
| Lougheed | Limit states testing of a buried deep-corrugated large-span box culvert | |
| CN110374012A (en) | A kind of prefabricated engineering method of T beam original position Support Method | |
| CN206635638U (en) | Using the prefabricated thin-wall bent cap of prestressing with bond system | |
| CN105421253B (en) | Prestress concrete simply supported beam reinforcing method and reinforcing structure thereof | |
| CN104818678B (en) | A kind of method anti-bend reinforced to freely-supported cored slab girder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210207 Address after: 100007 room d1031, No.11, Tibetan scripture hall Hutong, Dongcheng District, Beijing Patentee after: Beijing Guqiao Technology Co.,Ltd. Address before: 100124 No. 100 Chaoyang District Ping Tian Park, Beijing Patentee before: Beijing University of Technology |