CN106480856B - Pre-pressing type composite buffering energy dissipation cylinder - Google Patents
Pre-pressing type composite buffering energy dissipation cylinder Download PDFInfo
- Publication number
- CN106480856B CN106480856B CN201610557866.1A CN201610557866A CN106480856B CN 106480856 B CN106480856 B CN 106480856B CN 201610557866 A CN201610557866 A CN 201610557866A CN 106480856 B CN106480856 B CN 106480856B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- laminated
- steel
- energy dissipation
- tension
- 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Laminated Bodies (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an anti-collision device of a pre-pressing type composite buffering energy dissipation cylinder (I), which comprises an inner steel cylinder (1), a laminated tension cylinder (2), pre-pressing energy absorption materials (3) and auxiliary parts (4) - (10), (12) and (15). The steel-rubber piston plate (4) is connected with the tension cylinder (2) through bolts (8), and is welded with the inner steel cylinder (1), so that the inner steel cylinder (1) and the tension cylinder (2) are sealed. The energy absorbing material (3) is pre-pressed between the inner steel cylinder (1) and the tension cylinder (2) by the tensioning pre-stressing force bundles (6), the anchor (7) is anchored on the piston plate (4), and the epoxy resin foam (9) seals the anchor (7). Adjacent energy dissipation cylinders (I) are bolted through a flange plate (5), a laminated connecting cylinder (10) wraps the flange plate (5), and a water-swelling rubber water stop sheet (11) is arranged on the top and bottom surfaces of the connecting cylinders (10). The tension cylinder (2) and the energy absorbing material (3) can be greatly deformed as a buffering energy absorbing structure, the inner steel cylinder (1) is used as a structural framework and is not damaged, and the connecting cylinder (10) can prevent the flange plate (5) from being rusted after being directly impacted. The layered structure of the tension cylinder (2) and the connecting cylinder (10) can effectively ensure that maintenance and anti-corrosion treatment are not needed after light impact.
Description
Technical Field
The invention relates to a pre-pressing type composite buffering energy dissipation cylinder which is suitable for safety protection of bridge piers under ship collision.
Background
The risk of ship collision of the channel bridge is increased while shipping traffic is rapidly developed, and the conventional bridge collision accident often causes huge social and economic loss and casualties, so that the problem of ship collision prevention of the bridge has become an important research topic.
In order to reduce the loss caused by the accident that the ship collides with the bridge, scholars and engineering designers at home and abroad have conducted a great deal of researches on the anti-collision device. The direct type anti-collision device has relatively small influence on the river channel, low engineering cost and wide application at present.
The direct anti-collision devices proposed at present are mainly divided into 4 types: the combined structure comprises an anti-collision fender, a steel box, a fiber reinforced composite anti-collision structure and a combined structure of the steel box and a buffering energy consumption material.
The common anti-collision fender mainly comprises a rubber fender and a composite material fender, wherein the rubber fender absorbs kinetic energy of a ship by virtue of elastic deformation of the rubber fender so as to buffer impact force; most of composite material fenders are fiber reinforced composite material shell members or lattice members, buffer energy dissipation materials are filled in the shell or lattice cabin, and energy is absorbed by means of deformation of the composite materials and the buffer energy dissipation materials. The anti-collision fender is generally fixed on the surface of the protected member, and is suitable for the condition of low protection level because the energy consumption capacity of the anti-collision fender is smaller;
the steel box is a steel plate lattice type box body, the energy is dissipated by virtue of plastic deformation of a steel structure in the collision process, and the steel box has good energy consumption and deformability, however, the steel box is easy to corrode due to collision or scraping in the river and sea environment, so that the later maintenance requirement is higher;
most of fiber reinforced composite material anti-collision structures are cylindrical structures made of fiber reinforced composite materials, and the anti-collision structures are gradually applied at present due to the advantages of high material strength, light weight and corrosion resistance, but the energy consumption performance of the structures is relatively poorer than that of steel boxes due to the fact that the fiber reinforced composite materials belong to brittle materials; secondly, the connection between the anti-collision units is easy to cause brittle failure of materials so as to cause failure of the anti-collision structure;
the combined structure of the steel box and the buffering energy consumption material is characterized in that the steel box has larger rigidity of the whole structure, and only depends on the buffering energy consumption material for energy absorption in the collision process, and the steel box does not consume energy or consumes less energy, so that the buffering energy consumption capability of the steel box has great limitation; in addition, engineering practice shows that the corrosion resistance problem of the steel box after light impact or scraping impact is difficult to solve.
Disclosure of Invention
The invention provides a pre-pressing type composite buffering energy dissipation cylinder with excellent energy dissipation performance and reliable structural connection, which aims to overcome the defects of energy dissipation performance and structural connection in the prior art.
The invention aims at realizing the following technical scheme:
the invention discloses a prepressing type composite buffering energy dissipation cylinder (I), which comprises a main body component, an inner steel cylinder (1), a laminated tension cylinder (2), prepressing energy absorption materials (3) and other connecting and auxiliary components (4) - (10), (12) and (15), wherein the inner steel cylinder (1) and the laminated tension cylinder (2) are bolted through a steel-rubber piston plate (4); pre-pressing and filling the pre-pressing energy absorbing material (3) between the inner steel cylinder (1) and the laminated tension cylinder (2) through tensioning the pre-stress cable bundles (6); the prestress anchorage device (7) is anchored on the steel-rubber piston plate (4), and the prestress anchorage device is sealed by adopting epoxy resin foam (9); the steel-rubber piston plate (4) is bolted with the laminated tension cylinder (2) through bolts (8); the steel-rubber piston plate (4) is extruded and expanded to enable the inner steel cylinder (2) and the laminated tension cylinder (3) to form a closed structure; the adjacent pre-compression type composite buffering energy dissipation cylinder (I) sections are bolted through flange plates (5), the flange plates (5) are wrapped by laminated combined connecting cylinders (10), and water-swelling rubber water stop sheets (11) are arranged on the top surface and the bottom surface of the laminated combined connecting cylinders (10).
The laminated tension cylinder (2) is of a laminated structure of a plurality of layers of steel and a composite material, and the composite material is made of resin and one of glass fiber cloth, carbon fiber cloth, basalt fiber cloth and aramid fiber cloth.
The pre-pressing energy absorbing material (3) is filled between the inner steel cylinder (1) and the laminated tension cylinder (2) through tensioning the pre-tightening cable bundle (6); the pre-pressing energy absorbing material (3) comprises rubber rings, rubber particles, polyurethane foam, automobile tires and ceramsite.
The steel-rubber plug plate (4) is of a combined structure of a steel plate (16) and a rubber plug (17), the steel plate and the rubber plug are integrated through vulcanization treatment, and the rubber plug (17) imitates a syringe piston structure and is provided with an annular concave groove to ensure sealing performance.
The flange plate (5) and the inner steel cylinder (1) are welded at the end part, steel materials are selected as the flange plate materials, and bolt holes are arranged along the circumference of the flange plate.
The prestress cable bundle (6) comprises prestress steel strands, prestress steel bars, prestress steel wires, carbon fiber reinforced bars, aramid fiber reinforced bars, glass fiber reinforced bars and the like; the anchor (7) comprises a clamping piece anchor, a supporting anchor, a conical anchor and the like.
And the prestressed system anchorage device (7) is sealed by adopting epoxy resin foam (9) after tensioning and anchoring.
The laminated combined connecting cylinder (10) comprises a water-swelling rubber water stop sheet (11), a butt joint bolt (12), a foam filling body (13) and a laminated cylinder (14), wherein the foam filling body (13) can be made of polyurethane foam, and the laminated cylinder (14) is of a laminated structure of multi-layer steel and composite materials.
Compared with the prior art, the invention has the following advantages:
1. the energy-consuming main body is steel and the pre-pressing energy-absorbing material, the steel has excellent deformation energy-consuming performance, the energy-absorbing material forms an integral stress system after pre-pressing, and the energy-absorbing capability of the pre-pressing impact-absorbing material after being pressed is also obviously enhanced, so that the combined structure of the laminated tension cylinder and the pre-pressing energy-absorbing material has excellent buffering energy-dissipating performance;
2. the pre-pressing energy-absorbing material is tightly filled between the inner steel cylinder and the laminated tension cylinder, plays an internal supporting role on the laminated Zhang Litong, and is beneficial to the recovery deformation of the laminated tension cylinder after the collision is finished by utilizing the characteristic that the pre-pressing impact-absorbing material can recover deformation, so that the service life of the pre-pressing composite buffering energy-absorbing cylinder is prolonged to a certain extent;
3. the pre-pressing energy-absorbing material is positioned in the closed space, so that the aging phenomenon of the pre-pressing energy-absorbing material in the open air environment can be avoided;
4. the laminated tension cylinder adopts a laminated structure of a plurality of layers of steel and composite materials, and the corrosion resistance of the composite material layer is utilized, so that maintenance is not required after slight impact or scraping, and corrosion resistance treatment is not required again;
5. the laminated tension cylinder is of a laminated structure of a plurality of layers of steel and composite materials, and the composite materials have the characteristics of light weight and high strength, so that the self-floating capacity of the structure is improved;
7. the steel flange bolts are adopted between the energy dissipation cylinder sections, and the flange connections can provide enough connection rigidity, so that the stress integrity of the structure is enhanced; the flange is wrapped by the laminated combined connecting cylinder, so that the flange can be protected from direct impact, the flange is protected from corrosion due to water immersion, the two are combined to make best use of the advantages and avoid the disadvantages, and the connection reliability between the energy dissipation cylinder sections is ensured;
8. the laminated combined connecting cylinder has smaller quality, lower requirement on site construction and installation and easy replacement.
Drawings
FIG. 1 is a schematic diagram of a cross section of a pre-pressing type composite buffering energy dissipation cylinder, wherein pre-pressing energy absorption materials (a) and (b) are respectively tires and other energy absorption materials;
FIG. 2 is a schematic diagram of a sealing structure of the pre-pressing type composite buffering energy dissipation cylinder;
FIG. 3 is a schematic view of a steel-rubber stopper plate;
FIG. 4 is a schematic cross-sectional view of a stacked tension tube.
FIG. 5 is a schematic diagram of a connection configuration between adjacent energy dissipating cylinders, wherein (a) is a schematic diagram of an overall connection configuration between adjacent energy dissipating cylinder segments; (b) is a schematic structural view of the laminated combined connecting cylinder; (c) is a schematic structural view of the flange.
FIG. 6 is a schematic diagram of the installation state of the pre-pressing type composite buffering energy dissipation cylinder, wherein (a) is a schematic diagram of the installation of the site construction, and the combination A and the combination B are completed through onshore operation; (b) The use state of the pre-pressed composite buffering energy dissipation cylinder after the installation is completed is shown schematically.
Wherein: 1-an inner steel cylinder; 2-a lamination tension cylinder; 3-pre-pressing the energy absorbing material; 4-steel-rubber stopper plate; 5-a flange plate; 6, prestress cable bundles; 7, an anchor; 8-a bolt; 9-epoxy resin foam; 10-a laminated combined connecting cylinder; 11-a water-swelling rubber water stop sheet; 12-a butt bolt; 13-polyurethane foam; 14-a lamination cylinder; 15-flange bolts; 16-piston steel plate; 17-a rubber piston; 18-pier; a is an installation assembly A; b-installation assembly B.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
The pre-pressing composite buffering energy dissipation cylinder is shown in fig. 5. The energy dissipation cylinder is composed of a main component inner steel cylinder 1, a laminated tension cylinder 2 and a pre-pressing energy absorption material 3, and other connecting or auxiliary components (4) - (10), (12) and (15), as shown in fig. 1 and (2). The prepressing type composite buffering energy dissipation cylinder I is manufactured by adopting the prepressing and sealing process flow. The adjacent pre-compression type composite buffering energy dissipation cylinder I sections are connected through an inner flange plate 5 and are wrapped by a laminated combined connector 10, as shown in fig. 5. The pre-pressing type composite buffering energy dissipation cylinder I is connected into a combination body A and a combination body B through onshore construction operation, is floated to a pier, is spliced with the combination body A and the combination body B on site through the flange plate 5, and finally is provided with the laminated connector 10 as shown in fig. 6.
The process flow adopted by the sealing of the energy-absorbing material pre-pressing, the inner steel cylinder and the laminated tension cylinder is specifically as follows:
a. processing and manufacturing an inner steel cylinder;
b. fabricating a laminate Zhang Litong;
c. manufacturing a steel-rubber plug plate, wherein the steel plate and the rubber plug are integrated through vulcanization treatment, and are mounted at one ends of an inner steel cylinder and a laminated tension cylinder by bolts;
d. manufacturing an extension cylinder, wherein two ends of the extension cylinder can be supported on the side walls of the inner steel cylinder and the laminated tension cylinder;
e. the lengthening composite cylinder is characterized in that two inner steel cylinders are connected with two laminated tension cylinders through the lengthening cylinder;
f. a proper amount of energy absorbing material is filled between the inner steel cylinder and the laminated tension cylinder;
g. a steel-rubber plug plate is arranged at the extension end of the composite cylinder, a prestress cable bundle is penetrated along the axial direction of the composite cylinder, and an anchor is arranged on the steel-rubber plug plate at the two ends of the energy dissipation cylinder;
h. gradually grading and stretching the prestress at the fixed end of the steel-rubber plug plate until all energy absorbing materials are pressed into the energy dissipation cylinder of the section, and stopping stretching the prestress;
i. disassembling the extension tube, and anchoring the tension end anchorage device;
j. fixing the free end steel-rubber stopper plate to the stack Zhang Litong by bolts;
k. sealing the prestressed anchorage device by using epoxy resin foam;
and I, manufacturing a flange plate, and welding the flange plate with the inner steel cylinder at two ends of the inner steel cylinder.
Claims (6)
1. The pre-pressing type composite buffering energy dissipation cylinder comprises a main body member, an inner steel cylinder (1), a laminated tension cylinder (2), pre-pressing energy absorption materials (3) and other connecting and auxiliary members, wherein the inner steel cylinder (1) and the laminated tension cylinder (2) are bolted through a steel-rubber piston plate (4); pre-pressing and filling the pre-pressing energy absorbing material (3) between the inner steel cylinder (1) and the laminated tension cylinder (2) through tensioning the pre-stress cable bundles (6); the prestress anchorage device (7) is anchored on the steel-rubber piston plate (4), and the prestress anchorage device is sealed by adopting epoxy resin foam (9); the steel-rubber piston plate (4) is bolted with the laminated tension cylinder (2) through bolts (8); the steel-rubber piston plate (4) is extruded and expanded to enable the inner steel cylinder (1) and the laminated tension cylinder (2) to form a closed structure; the sections of the adjacent prepressing type composite buffering energy dissipation cylinders are bolted through flange plates (5), the flange plates (5) are wrapped by laminated combined connecting cylinders (10), and water-swelling rubber water stop sheets (11) are arranged on the top surface and the bottom surface of the laminated combined connecting cylinders (10); the laminated tension cylinder (2) and the pre-pressed energy absorbing material (3) are used as a buffering energy absorbing structure, the inner steel cylinder (1) is used as a structural framework, and the laminated combined connecting cylinder (10) can prevent the flange plate (5) from being rusted after being directly impacted; the layered structure of the laminated tension cylinder (2) and the laminated combined connecting cylinder (10) can ensure that maintenance is not needed after light impact, and corrosion prevention treatment is not needed again; the laminated tension cylinder (2) is of a laminated structure of a plurality of layers of steel and a composite material, and the composite material is made of resin and one of glass fiber cloth, carbon fiber cloth, basalt fiber cloth and aramid fiber cloth; the steel-rubber piston plate (4) is a combined structure of a steel plate (16) and a rubber plug (17), the steel plate and the rubber plug are integrated through vulcanization treatment, and the rubber plug (17) is provided with an annular groove.
2. The pre-pressed composite buffering energy dissipation cylinder according to claim 1, wherein the pre-pressed energy absorption material (3) is filled between the inner steel cylinder (1) and the laminated tension cylinder (2) by applying pre-stress; the pre-pressing energy absorbing material (3) comprises one or a combination of a plurality of rubber rings, rubber particles, polyurethane foam and ceramsite.
3. The pre-pressing type composite buffering energy dissipation cylinder according to claim 1, wherein the flange plate (5) and the inner steel cylinder (1) are welded at the end parts, steel materials are selected as the flange plate, and bolt holes are arranged along the circumference of the flange plate.
4. The pre-pressed composite buffering energy dissipation cylinder according to claim 1, wherein the pre-stress cable bundles (6) comprise carbon fiber reinforced ribs or aramid fiber reinforced ribs or glass fiber reinforced ribs; the prestressed anchorage means (7) comprise a clip anchor or a support anchor.
5. The pre-pressing type composite buffering energy dissipation cylinder according to claim 1, wherein the pre-stress anchor (7) is sealed by epoxy resin foam after being stretched and anchored.
6. The pre-pressing type composite buffering energy dissipation cylinder as claimed in claim 1, wherein the laminated combined connecting cylinder (10) comprises a water-swelling rubber water stop sheet (11), a butt bolt (12), a foam filling body (13) and a laminated cylinder (14), wherein the foam filling body (13) is made of polyurethane foam, and the laminated cylinder (14) is of a laminated structure of multi-layer steel and composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610557866.1A CN106480856B (en) | 2016-07-15 | 2016-07-15 | Pre-pressing type composite buffering energy dissipation cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610557866.1A CN106480856B (en) | 2016-07-15 | 2016-07-15 | Pre-pressing type composite buffering energy dissipation cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106480856A CN106480856A (en) | 2017-03-08 |
| CN106480856B true CN106480856B (en) | 2023-07-21 |
Family
ID=58273119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610557866.1A Active CN106480856B (en) | 2016-07-15 | 2016-07-15 | Pre-pressing type composite buffering energy dissipation cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106480856B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6053664A (en) * | 1997-03-03 | 2000-04-25 | The United States Of America As Represented By The Secretary Of The Navy | Elastomeric composite bumper system and method for absorbing high energy impact |
| JP2000230225A (en) * | 1999-02-09 | 2000-08-22 | Masaki Yamamoto | Fixed pneumatic fender for quay |
| EP1596009A1 (en) * | 2004-05-12 | 2005-11-16 | Yincheng Hou | A novel protective work for vessel impact on bridge piers |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201553978U (en) * | 2009-11-10 | 2010-08-18 | 中铁大桥勘测设计院有限公司 | Composite material bridge anti-collision device |
| CN102251470A (en) * | 2011-05-10 | 2011-11-23 | 南京工业大学 | Barrel-shaped composite material bridge anti-collision device |
| CN102425138A (en) * | 2011-12-26 | 2012-04-25 | 华北水利水电学院 | Slope protection or flood control dam using discarded tyres |
| US20140130725A1 (en) * | 2011-12-30 | 2014-05-15 | Nanjing University Of Technology | Anti-collision device made of buffering energy-absorbing type web-enhanced composite material |
| CN103031817A (en) * | 2013-01-10 | 2013-04-10 | 江苏博泓新材料科技有限公司 | Honeycomb lattice reinforced composite material double-cylinder structure and anti-collision system applying same |
| CN204185822U (en) * | 2014-09-28 | 2015-03-04 | 常州慧运复合材料有限公司 | Reinforced composite material bumper ring |
| CN204139128U (en) * | 2014-10-10 | 2015-02-04 | 江苏宏远科技工程有限公司 | Flexible protection energy dissipating circle |
-
2016
- 2016-07-15 CN CN201610557866.1A patent/CN106480856B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6053664A (en) * | 1997-03-03 | 2000-04-25 | The United States Of America As Represented By The Secretary Of The Navy | Elastomeric composite bumper system and method for absorbing high energy impact |
| JP2000230225A (en) * | 1999-02-09 | 2000-08-22 | Masaki Yamamoto | Fixed pneumatic fender for quay |
| EP1596009A1 (en) * | 2004-05-12 | 2005-11-16 | Yincheng Hou | A novel protective work for vessel impact on bridge piers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106480856A (en) | 2017-03-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2271731C (en) | Composite steel structural plastic sandwich plate systems | |
| US6706406B1 (en) | Composite steel structural plastic sandwich plate systems | |
| WO2013097198A1 (en) | Anti-impact device of damping and energy-absorbing type made from web-enhanced composite material | |
| KR101246487B1 (en) | Floating structure having shock absorbing and binding device | |
| WO2012152047A1 (en) | Cylindrical composite bridge anticollision device | |
| CN202989764U (en) | Anticollision device of bridge pier | |
| CN111041979A (en) | Flexible sandwich structure pier buffer stop | |
| CN111021632A (en) | FRP multilayer sheet anchoring system based on ring-clamp synergistic effect | |
| CN110777645A (en) | Pier anti-collision protective cylinder with low rigidity and high energy consumption | |
| CN108442325A (en) | Bulk-filled thin-wall soft ship collision prevention device | |
| CN110725241A (en) | Shock attenuation outsourcing structure suitable for highway pier | |
| CN106480856B (en) | Pre-pressing type composite buffering energy dissipation cylinder | |
| CN111119034B (en) | Combined rubber shock-absorbing support with limiting rigidity difference of inhaul cable | |
| CN206987189U (en) | One kind can recover function coupling beam | |
| CN201559804U (en) | Rubber foaming fender | |
| CN1551963A (en) | Method of reinforcing an existing metal structure, method of reinforcing pipes and method of addition of spur lines to pipelines | |
| CN103899104B (en) | External prestressing Nuclear containment | |
| CN111472264A (en) | Combined anti-explosion protection device for bridge pier | |
| CN102953324A (en) | Anti-collision device of bridge pier | |
| CN103352447A (en) | Protection and energy-absorption device for ship-bridge collision | |
| CN105040852A (en) | Prestress viscoelastic damper | |
| CN208346759U (en) | Bulk-filled thin-wall soft ship collision prevention device | |
| CN211772765U (en) | Railway bridge anti-collision structure | |
| CN101265738A (en) | Reinforced concrete precast member containing steel plate | |
| CN203361092U (en) | Ship-bridge collision protective energy-absorption device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201125 Address after: 200092 Shanghai City, Yangpu District Siping Road No. 1239 Applicant after: TONGJI University Applicant after: ANHUI TRANSPORTATION HOLDING GROUP Co.,Ltd. Address before: 200092 Shanghai City, Yangpu District Siping Road No. 1239 Tongji University Bridge pavilion room 805 Applicant before: Wang Junjie |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |