CN103015313B - A kind of bridge floor continuation apparatus and bridge floor continuation method being applied to simply supported girder bridge - Google Patents
A kind of bridge floor continuation apparatus and bridge floor continuation method being applied to simply supported girder bridge Download PDFInfo
- Publication number
- CN103015313B CN103015313B CN201210588176.4A CN201210588176A CN103015313B CN 103015313 B CN103015313 B CN 103015313B CN 201210588176 A CN201210588176 A CN 201210588176A CN 103015313 B CN103015313 B CN 103015313B
- Authority
- CN
- China
- Prior art keywords
- bridge floor
- bridge
- beam body
- installation position
- continuation apparatus
- 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
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a kind of bridge floor continuation apparatus being applied to simply supported girder bridge and comprise splayed structure, the both sides of splayed structure have the installation position for being connected with bridge floor beam body, by zigzag bar connecting between described installation position and bridge floor beam body.The present invention also provides the bridge floor continuation method applying above-mentioned bridge floor continuation apparatus, bridge floor continuation apparatus is placed on the concrete beam body of both sides, bridge floor continuous position, the beam body of installation position by both sides, bolt and bridge floor continuous position is connected, between installation position and beam body, lays rubber spacer; Rubber spacer makes installation position and beam body combine closely, and retrains its longitudinal deformation simultaneously.The present invention changes traditional bridge floor continuous print form, utilizes splayed steel plate device in conjunction with Z bar muscle, reaches the object avoiding bridge floor continuous position concrete that cracking occurs.In addition, the bridge floor continuation apparatus that the present invention proposes, form of structure is simple, and be easy to processing in factory, constructability at the scene, quality easily ensures.
Description
Technical field
The present invention relates to bridge floor continuation apparatus and the bridge floor continuation method of simply supported girder bridge.
Background technology
Simply supported girder bridge be use the earliest in modern bridge construction, universal one of bridge type the most widely, there is salient feature.First, it belongs to single hole statically determinate structrue, simply stressed, easy construction, and physical dimension can be designed as the fabricated construction of various standard span, is conducive to industrialized standard construction, the mode of extensive Prefabrication can be adopted to improve bridge construction efficiency.Secondly, simply supported beam only has positive bending moment, and can adopt the simply constructed forms such as hollow slab beam, T beam, small box girder, it all can not produce secondary stress in the situations such as variations in temperature, concrete shrinkage and creep and stretch-draw prestressing force in beam.In addition, freely supported structure is lower for the Geological Condition Requirement of bridge site, goes for relatively poor geological conditions.Based on above-mentioned plurality of advantages, in the highway that simply supported girder bridge is extensively distributed in national regional and urban road.
But, when building porous simply supported girder bridge, need to arrange expansion gap device on each pier (platform).Along with the increase of bridge span number, the quantity of deck expansion joint device is also on the increase, and not only increases the cost of bridge, and can reduce the globality of bridge floor, make vehicle occur at shrinkage joint place jumping car phenomenon, the speed of driving a vehicle, safety and comfort are all had a great impact.In addition, shrinkage joint long term exposure outside, repair by rapid wear difficulty, and the shrinkage joint destroyed can cause again extra vehicular impact phenomenon, thus greatly reduce the application life of bridge.
In order to address these problems, the idea that bridge design personnel propose " bridge floor continuous freely supported beam bridge ", as shown in Figure 1.Bridge floor continuous freely supported beam bridge refers to the pattern across footpath, length and bearing of porous simply supported girder bridge according to bridge, by 3 across or more multispan merge into 1, often join across across between cancel expansion gap device, but deck paving to be linked together, only shrinkage joint is set between connection with connection.Such as, Zhengzhou Yellow River highway bridge is provided with five continuous across the bridge floor of 40m mono-across 50m mono-and six.Even some bridge design, full-bridge only establishes expansion gap device at Abutment, and it is continuous that all the other are bridge floor.Such as, the U.S. Ao Wener bridge of total length 1287 m, only arranges Large travel range stretching device at Abutment, becomes bridge floor continuous freely supported beam bridge the longest in the world.Bridge floor continuous structure reduces the expansion gap device even eliminated in continuous span, provides continuous print runway, ensure that stationarity, comfortableness that vehicle travels.Meanwhile, bridge floor continuous freely supported beam bridge under vertical force, respectively across the loading characteristic still maintaining simply supported girder bridge.China is since 20 century 70 bridge floor continuous structures come out, and this device is widely applied.
Fig. 2 is traditional bridge floor continuation apparatus schematic diagram.The main distinction of this bridge floor continuation apparatus and deck paving is provided with along bridge lateral the connecting reinforcement being about 2.3m at spacing intervals, reinforcing bar two ends 0.65m is long to be cast in deck paving of concrete, middle 1m section does soap-free emulsion polymeization process, is embedded in bridge floor continuous concrete.Establish 0.3cm(wide between the bridge floor continuous concrete that 1m is long and two ends deck paving of concrete) × 3cm(is dark) slot, bury spline under slot.Why process like this, determined by bridge floor continuous print loading characteristic.Bridge floor continuous structure adjacent bridge across between, its structural thickness and concrete material are all identical with deck paving, compare weak with intensity with the rigidity of structure of beam body, when being subject to traffic loading and temperature load effect, there is larger relative deformation in left and right sides spanning, this bridge floor continuous print connecting reinforcement that is forced through reaches bridge floor continuous concrete from deck paving.In theory, soap-free emulsion polymeization between connecting reinforcement and bridge floor continuous concrete, therefore the pulling force on connecting reinforcement is not delivered on concrete, but due to problems such as the not good and non-cohesive material poor durability of construction, actually cannot reach " soap-free emulsion polymeization " effect.The pulling force be delivered on bridge floor continuous concrete relies on bridge floor continuity reinforcement(bar) and deck paving steel mesh reinforcement to resist, easily concrete cracking is there is at the continuous position of bridge floor, cause in actual use procedure, bridge floor continuous concrete cracking and rainwater infiltration problem serious, some bridge is even runed not year and a day bridge floor continuous structure and is just created the disease in various degree such as concrete cracking, and have impact on the driving planarization of bridge.For this problem, the bridge floor continuous structure of simply supported girder bridge is improved, research and develop novel bridge floor continuous structure very necessary.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of bridge floor continuation apparatus being applied to simply supported girder bridge, for the purpose of structure optimization, proposes the construction measure of splayed bridge floor of steel plate continuous apparatus.
For this reason, the present invention is by the following technical solutions: described bridge floor continuation apparatus comprises splayed structure, the both sides of splayed structure have the installation position for being connected with bridge floor beam body, by zigzag bar connecting between described installation position and bridge floor beam body, the Partial Height of zigzag bar connecting splayed structure is lower than the part connecting deck paving.
Splayed structure makes the concrete at the continuous position of bridge floor present pressured state, and avoid this position concrete, in the operation phase, cracking phenomena occurs, and this device form is simple, easy to manufacture, site operation workable.Zigzag reinforcing bar can strengthen bridge floor continuously and the concrete globality of deck paving two parts, the driving ride comfort at the raising continuous position of bridge floor; And, longitudinal pulling force is delivered to the both-side ends of splayed structure by zigzag reinforcing bar, the effect of splayed structural entity under tension, thus make the concrete bearing compressive force of splayed superstructure, completely eliminate the possibility that cracking occurs bridge floor continuous part concrete.
As preferably, described splayed structure adopts the steel plate of 8 ~ 16mm thickness as device materials, bears concentrated action of pulling stress and the effect of vehicle local load to adapt to the continuous position of bridge floor.
As preferably, described zigzag reinforcing bar adopts the indented bars of diameter 14 ~ 22mm.
Further, described installation position is provided with bolt hole, is connected by described bridge floor continuation apparatus by bolt with bottom concrete beam plate, is connected by bridge floor continuation apparatus for overall with beam body, in order to the dilatation of not restraint beam body longitudinal direction, described bolt hole is mounting hole.
Further, described splayed structure is made up of intermediate plate, the two blocks of oblique wing plates of the Eight characters connecting intermediate plate and the installation position be connected to outside the oblique wing plate of the Eight characters, the oblique wing plate of the described Eight characters arranges WELDING STUDS, WELDING STUDS is 10 ~ 15cm along the spacing of bridge floor continuation apparatus length direction, with ensure splayed structure and bridge floor continuous part concrete well-bonded, jointly stressed.
Another technical problem to be solved by this invention is to provide a kind of bridge floor continuation method, and it provides above-mentioned bridge floor continuation apparatus, further comprising the steps of:
1), by described bridge floor continuation apparatus be placed on the concrete beam body of both sides, bridge floor continuous position, the beam body of described installation position by both sides, bolt and bridge floor continuous position be connected, between installation position and beam body, lay rubber spacer; Rubber spacer makes installation position and beam body combine closely, and retrains its longitudinal deformation simultaneously.
2), fluid concrete, the longitudinal connecting reinforcement of zigzag is set between the continuous position of bridge floor and deck paving position; Zigzag reinforcing bar can strengthen bridge floor continuously and the concrete globality of deck paving two parts, the driving ride comfort at the raising continuous position of bridge floor; And, longitudinal pulling force is delivered to the both-side ends of splayed structure by zigzag reinforcing bar, the effect of splayed structural entity under tension, thus make the concrete bearing compressive force of splayed superstructure, completely eliminate the possibility that cracking occurs bridge floor continuous part concrete.
3), in the Eight characters of described splayed structure oblique wing plate centerline welding WELDING STUDS; With ensure splayed structure and bridge floor continuous part concrete well-bonded, jointly stressed.
Further, the top of bridge floor continuation apparatus arranges steel mesh reinforcement.
As preferably, the thickness of described rubber spacer is 0.3 ~ 1.0mm.
As preferably, WELDING STUDS is 10 ~ 15cm along the spacing of bridge floor continuation apparatus length direction.
Beneficial effect of the present invention shows:
Bridge floor continuation apparatus of the present invention is applied on bridge, can prevent the present situation of bridge floor continuous position concrete cracking, guarantee the travel safety of bridge.The present invention changes traditional bridge floor continuous print form, utilize splayed steel plate device in conjunction with the longitudinal connecting reinforcement of zigzag, by the pull transfer that connects in the longitudinal reinforcement of deck paving and bridge floor continuous part in splayed steel plate device, make the concrete compression at the continuous position of bridge floor above splayed steel plate, reach the object avoiding bridge floor continuous position concrete that cracking occurs.In addition, the bridge floor continuation apparatus that the present invention proposes, form of structure is simple, and be easy to processing in factory, constructability at the scene, quality easily ensures.
Patent device manufacturing process is simple, site operation difficulty is low, shown by the theoretical research carried out the controlling disease effect of this novel bridge floor continuation apparatus, bridge floor continuation apparatus of the present invention and bridge floor continuation method have good effect for preventing bridge floor continuous freely supported beam bridge construction in the continuous position of bridge floor concrete cracking disease.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing bridge floor continuous freely supported beam bridge.
Fig. 2 is the schematic diagram of traditional bridge floor continuation apparatus.
Fig. 3 is the schematic cross-section of bridge floor continuation apparatus of the present invention.
Fig. 4 is the three-dimensional perspective of bridge floor continuation apparatus of the present invention.
Fig. 5 is the FEM (finite element) model of bridge floor continuation apparatus theory analysis of the present invention.
Fig. 6 is the rubber spacer schematic diagram between bridge floor continuation apparatus of the present invention and beam body.
Drawing reference numeral: 1-splayed structure, 2-installation position, 3-zigzag reinforcing bar, 4-bolt hole, the oblique wing plate of 5-Eight characters, 6-WELDING STUDS, 7-bolt, 8-beam body, 9-rubber spacer, 10-steel mesh reinforcement, the continuous position of 11-bridge floor, 12-deck paving position, 13-bearing, 14-shrinkage joint, 15-bridge pier.
Detailed description of the invention
Embodiment 1, bridge floor continuation apparatus.
With reference to accompanying drawing 3,4.The present invention includes splayed structure 1, splayed structure 1 adopts the steel plate of 8 ~ 16mm thickness as device materials, the both sides of splayed structure 1 have the installation position 2 for being connected with bridge floor beam body 8, be connected by zigzag reinforcing bar 3 between installation position 2 with bridge floor beam body 8, zigzag reinforcing bar 3 adopts the indented bars of diameter 14 ~ 22mm.Installation position 2 is provided with bolt hole 4, and described bolt hole 4 is mounting hole.The oblique wing plate 5 of the Eight characters of splayed structure 1 arranges WELDING STUDS 6, and WELDING STUDS 6 is 10 ~ 15cm along the spacing of bridge floor continuation apparatus length direction.
Consider the convenience of transport and construction, become length to be the splayed plate specification section (nearly weighing 50kg) of 1m and the zigzag reinforcing bar of full-length 120cm in factory process, carry out welding again to job site assembled.
In construction until beam body 8 is assembled complete after, beam body 8 end surface within the scope of the cleaning each 30cm in both sides, shrinkage joint 14, keeps surfacing without the excessive discrepancy in elevation as far as possible.Both sides, shrinkage joint 13 with contact the position that splayed structure 1 contacts and spread 2 slat gum bed courses 9 along bridge overall with, every bar width is 12cm.Be positioned on rubber spacer 9 by splayed plate specification section, splicing is welded into one (the non-bid section splayed steel plate device that is prefabricated in the factory of non-integer bridge width) behind location.Beam body 8 corresponding to waist-shaped hole 4 position is holed, with swell fixture, bridge floor continuation apparatus and beam body is connected firmly.At the both sides of splayed structure 1 welding zigzag reinforcing bar 3, the continuous top rebars net of last colligation bridge floor and deck paving steel mesh reinforcement 10, concreting.
In figure, label 11 is the continuous position of bridge floor, and label 12 is for being deck paving position, and label 13 is bearing, and label 15 is bridge pier, and label 16 is joint-cutting.
Embodiment 2, bridge floor continuation method.
With reference to accompanying drawing 3,4,6.The bridge floor continuation apparatus of embodiment 1 is applied on simply supported girder bridge by bridge floor continuation method of the present invention, and described bridge floor continuation method is further comprising the steps of:
1), the bridge floor continuation apparatus of embodiment 1 is placed on the concrete beam body 6 of both sides, bridge floor continuous position, the beam body 8 of installation position 2 by both sides, bolt 7 and bridge floor continuous position is connected, rubber spacer 9 is laid between installation position 2 and beam body 8, the thickness of rubber spacer is 0.3 ~ 1.0mm, rubber spacer 9 makes installation position 2 and beam body 8 combine closely, and retrains its longitudinal deformation simultaneously.
2), fluid concrete, the continuous position of bridge floor 11 with zigzag reinforcing bar 3 be set between deck paving position 12 carry out longitudinal connection; Zigzag reinforcing bar 3 can strengthen bridge floor continuously and the concrete globality of deck paving two parts, the driving ride comfort at the raising continuous position 11 of bridge floor; And, longitudinal pulling force is delivered to the both-side ends of splayed structure 1 by zigzag reinforcing bar 3, the overall under tension effect of splayed structure 1, thus make the concrete bearing compressive force above splayed structure 1, completely eliminate the possibility that cracking occurs bridge floor continuous part concrete.
3), in the Eight characters of splayed structure 1 oblique wing plate 5 centerline welding WELDING STUDS 6, WELDING STUDS 6 is 10 ~ 15cm along the spacing of bridge floor continuation apparatus length direction, well-bonded, jointly stressed to ensure splayed structure 1 and bridge floor continuous part concrete.
Embodiment 3, the finite element analysis of bridge floor continuation apparatus.
With reference to accompanying drawing 5.The analogue simulation of apparatus of the present invention adopts large-scale general finite element program ABAQUS 6.9, except fine analog geometrical model, also strictly carries out analogue simulation by design condition to the distribution of reinforcing bar, material behavior.Simulation process comprises two steps:
(1) traditional bridge floor continuation apparatus and the limit element artificial module both splay configuration bridge floor continuation apparatus is set up respectively.
(2) simulate realistic bridges girder construction, by applying live load and temperature action, comparing both result of calculation, proving effectiveness of the present invention.
Bridge floor continuous position stress plays causing this position distortions (flexible, corner) by beam body deformability (flexible, downwarp) and producing of control action, in order to verify the effectiveness of apparatus of the present invention, with traditional bridge floor continuous structure for comparison other, contrast the distortion of two kinds of devices under various forms load action and stress characteristics by analysis of finite element method.
During model calculates, two kinds of bridge floors take identical design condition continuously, and namely apply point load in bridge span and compare, its result is as shown in table 1.Result shows, traditional bridge floor continuation apparatus bridge floor continuous concrete principal tensile stress under the effect of bridge floor external load is 3.3MPa, and when adopting apparatus of the present invention, the complete pressurized of bridge floor continuous concrete, does not exist the possibility that cracking occurs.
Two kinds of bridge floor continuous concrete principal tensile stresses contrast (unit: MPa) under table 1 identical calculations condition
| Operating mode | Traditional | The present invention | Results contrast |
| Span centre loads | 3.30 | -1.28 | Concrete stress becomes compressive stress |
Claims (3)
1. one kind is applied to the bridge floor continuation apparatus of simply supported girder bridge, it is characterized in that: described bridge floor continuation apparatus comprises splayed structure, the both sides of splayed structure have the installation position for being connected with bridge floor beam body, by zigzag bar connecting between described installation position and bridge floor beam body;
Described splayed structure adopts the steel plate of 8 ~ 16mm thickness;
The oblique wing plate of the Eight characters of described splayed structure arranges WELDING STUDS, and described WELDING STUDS is 10 ~ 15cm along the spacing of bridge floor continuation apparatus length direction.
2. a kind of bridge floor continuation apparatus being applied to simply supported girder bridge as claimed in claim 1, it is characterized in that: described installation position is provided with bolt hole, described bolt hole is the mounting hole along bridge floor continuation apparatus length direction.
3. a kind of bridge floor continuation apparatus being applied to simply supported girder bridge as claimed in claim 1, is characterized in that: described zigzag reinforcing bar adopts the screw-thread steel of diameter 14 ~ 22mm to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210588176.4A CN103015313B (en) | 2012-12-31 | 2012-12-31 | A kind of bridge floor continuation apparatus and bridge floor continuation method being applied to simply supported girder bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210588176.4A CN103015313B (en) | 2012-12-31 | 2012-12-31 | A kind of bridge floor continuation apparatus and bridge floor continuation method being applied to simply supported girder bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103015313A CN103015313A (en) | 2013-04-03 |
| CN103015313B true CN103015313B (en) | 2015-09-02 |
Family
ID=47964377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210588176.4A Active CN103015313B (en) | 2012-12-31 | 2012-12-31 | A kind of bridge floor continuation apparatus and bridge floor continuation method being applied to simply supported girder bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103015313B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109359336B (en) * | 2018-09-14 | 2020-06-19 | 上海交通大学 | Multi-objective optimization-based similar distortion model construction method for binding bridge |
| CN110580376B (en) * | 2019-07-30 | 2021-04-13 | 浙江大学 | Revit and Dynamo-based pile foundation model creation method |
| CN111519537A (en) * | 2020-04-17 | 2020-08-11 | 安徽省交通规划设计研究总院股份有限公司 | Bridge deck longitudinal quick connecting structure between bridge spans of beam bridge and construction method of bridge deck longitudinal quick connecting structure |
| CN115559205A (en) * | 2022-09-30 | 2023-01-03 | 哈尔滨工业大学 | Composite arch-shaped bridge deck continuous structure applied to simply supported girder bridge and construction method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704393A (en) * | 2012-05-25 | 2012-10-03 | 浙江大学 | Bridge deck continuous device applied to beam bridge and bridge deck continuous method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1310219C (en) * | 1989-05-04 | 1992-11-17 | Joseph D. George | Expansion joint seals and methods and apparatus for making and installing the same |
| DE4026847A1 (en) * | 1990-08-24 | 1992-02-27 | Wsw Planungsges | Bridging device for expansion joints between carriageway sections - consists of longitudinal flexible sealing strip anchored by two flat iron struts fixed to base |
| DE19709745C2 (en) * | 1997-03-10 | 2000-10-05 | Kovac Franjo | Expansion joint construction |
| HK1032328A2 (en) * | 2001-02-14 | 2001-07-06 | Gammon Finance Ltd | Module |
| CN102021885B (en) * | 2011-01-04 | 2012-02-15 | 上海市城市建设设计研究院 | Bridge deck continuous seam structure |
| CN201990944U (en) * | 2011-03-21 | 2011-09-28 | 中交通力建设股份有限公司 | Bridge surface continuous device with combined structure |
| CN202090280U (en) * | 2011-05-16 | 2011-12-28 | 广东工业大学 | Simply supported-continuous device of concrete beam bridge |
-
2012
- 2012-12-31 CN CN201210588176.4A patent/CN103015313B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704393A (en) * | 2012-05-25 | 2012-10-03 | 浙江大学 | Bridge deck continuous device applied to beam bridge and bridge deck continuous method |
Non-Patent Citations (1)
| Title |
|---|
| 宰国军.竖转钢-砼组合拱桥结构优化研究.《中国优秀硕士学位论文全文数据库工程科技II辑》.2008,(第9期),目录第一页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103015313A (en) | 2013-04-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103015313B (en) | A kind of bridge floor continuation apparatus and bridge floor continuation method being applied to simply supported girder bridge | |
| CN108867310A (en) | The short rib T beam bridge of pretensioning prestressed concrete and its construction method | |
| CN109183634B (en) | Structure for realizing continuity of simply supported T-shaped girder bridge by connecting end cross beams and construction method thereof | |
| CN205205654U (en) | Seam construction of precast concrete festival segmentation bridge | |
| CN110130220B (en) | Novel concrete bridge surface continuous structure applied to beam bridge | |
| CN207267954U (en) | A kind of prefabricated PC construction refuse regenerated aggregate road | |
| CN110616631A (en) | Longitudinal connection structure suitable for main beam at bridge expansion joint and construction method | |
| CN104562931A (en) | Bridge deck unit without transverse surface tensioned joints, bridge structure without transverse surface tensioned joints and construction method of bridge structure | |
| CN111962372A (en) | Road-rail combined construction steel web member double-combination continuous truss girder and construction method thereof | |
| CN201865037U (en) | Assembly type hollow slab bridge transferring force by adopting bracket instead of ribbet | |
| CN111827075A (en) | High-speed railway highway-railway combined construction continuous steel truss combined beam bridge and construction method | |
| CN103205930B (en) | Structure for continuous transformation of existing simply supported hollow slab girder bridge and construction method of structure | |
| CN210194342U (en) | Longitudinal-connection track plate structure | |
| CN113322771A (en) | Seamless bridge structure based on ultrahigh-toughness cement-based composite material and construction method | |
| CN101935977B (en) | Assembly type hollow slab bridge adopting bracket to replace ribbet to transmit force | |
| CN210657995U (en) | Rail plate girder construction system | |
| CN210262719U (en) | Longitudinal connecting plate beam structure | |
| CN208668245U (en) | A kind of steel-UHPC combination beam construction for cable-stayed bridge | |
| CN212714471U (en) | High-speed railway highway-railway combined construction continuous steel truss combined beam bridge | |
| CN212335738U (en) | Double-combination continuous truss girder of combined steel web member for highway and railway construction | |
| CN211200056U (en) | Longitudinal connection structure suitable for girder at bridge expansion joint | |
| CN203256627U (en) | Continuously-transforming structure of existing simply-supporting hollow plate girder bridge | |
| CN109183633B (en) | Continuous structure of existing simply supported hollow slab bridge structure and construction method thereof | |
| CN109868744B (en) | Full precast concrete bridge deck without cast-in-situ pavement layer | |
| CN208038992U (en) | A kind of composite structure overpass of Midspan sag |
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 | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Gang Inventor after: Shen Yonggang Inventor after: Zhang He Inventor after: Xie Xu Inventor after: Zhu Yuefeng Inventor before: Wang Gang Inventor before: Shen Yonggang Inventor before: Zhang He Inventor before: Xie Xu |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG GANG SHEN YONGGANG ZHANG HE XIE XU TO: WANG GANG SHEN YONGGANG ZHANG HE XIE XU ZHU YUEFENG |