CN106638301A - Orthotropic steel bridge deck and machining method as well as bridge - Google Patents
Orthotropic steel bridge deck and machining method as well as bridge Download PDFInfo
- Publication number
- CN106638301A CN106638301A CN201610913273.4A CN201610913273A CN106638301A CN 106638301 A CN106638301 A CN 106638301A CN 201610913273 A CN201610913273 A CN 201610913273A CN 106638301 A CN106638301 A CN 106638301A
- Authority
- CN
- China
- Prior art keywords
- ribs
- bridge deck
- steel bridge
- backing plate
- plate
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for bridges
Abstract
The invention relates to the technical field of bridge manufacturing, in particular to an orthotropic steel bridge deck, a machining method and a bridge. The orthotropic steel bridge deck comprises a steel bridge deck body, a transverse partition, a U-shaped rib and base plates, wherein the U-shaped rib and the transverse partition are fixed on the same side of the steel bridge deck body; the U-shaped rib is mutually intersected with the transverse partition; and the base plates are arranged on the inner wall of the U-shaped rib and are located at positions where the U-shaped rib is intersected with the transverse partition. According to the orthotropic steel bridge deck, the base plates are located at positions where the U-shaped rib is intersected with the transverse partition in the orthotropic steel bridge deck, so that the structural rigidity of joints of the U-shaped rib and the transverse partition can be effectively enhanced, local deformation of wall plates of the U-shaped rib is reduced, and the fatigue life of the joints of the U-shaped rib and the transverse partition is prolonged; and furthermore, the base plates occupy a small space in the U-shaped rib, so that moving of a U-shaped rib internal welding robot in the U-shaped rib and welding of fillet welds on the inner side, connected with the steel bridge deck, of the U-shaped rib cannot be affected.
Description
Technical field
The present invention relates to bridge manufacturing technology field, more particularly to a kind of Orthotropic Steel Bridge Deck and processing method and one
Plant bridge.
Background technology
In recent years, the fatigue problem of Orthotropic Steel Bridge Deck is increasingly projected.In each structure of Orthotropic Steel Bridge Deck
In making details, longitudinal rib is the most complicated with the stress mode of crossbeam crossover sites, and welds matter generally using manual welding between the two
Amount is difficult to ensure that, in addition along with welding condition and the difference of welding order, and the geometrical construction of complexity, the weldering at the position
Connect residual stress distribution to be also difficult to hold, these factors cause longitudinal rib easily to produce fatigue crack with crossbeam crossover sites.Specifically
, various fatigue crack forms are likely to occur in U ribs and diaphragm plate crossover sites, mainly include crossbeam arc incision circumferential crack
C.7, crossbeam arc incision crack on end side C.5 and U ribs and diaphragm plate attachment weld end longitudinal rib wallboard horizontal crackle it is C.6 and perpendicular
To crackle C.8 etc., as shown in Figure 1.
It is connected the infall rigidity of structure with diaphragm plate to improve U ribs, reduces the stress amplitude of U rib wallboards, at present in the industry
Two kinds of technical schemes are mainly proposed, one kind is that internal partition is arranged inside the U ribs of diaphragm plate corresponding position, and another kind is diaphragm plate pair
U ribs inside should be located internal-rib is set.Above two scheme can effectively improve the U rib walls of U ribs and diaphragm plate attachment weld end
C.6 plate level crackle, but also brings along problems with：Due to prior art using internal welding machine device people enter U ribs inside to U ribs with
Floorings junction inside angle welding implements welding, if arranging internal partition or internal-rib inside U ribs, internal welding machine device people will be hindered to exist
Advance U ribs inside so as to cannot normal weld.
The content of the invention
In view of the above problems, it is proposed that the present invention so as to provide one kind overcome the problems referred to above or at least in part solve on
State the Orthotropic Steel Bridge Deck and processing method and bridge of problem.
The embodiment of the present invention provides a kind of Orthotropic Steel Bridge Deck, including steel bridge deck body, diaphragm plate, U ribs and pad
Plate；
The U ribs and the diaphragm plate are fixed on the same side of the Steel Bridge Deck body, and, the U ribs and the tabula
Plate intersects；
The backing plate is arranged at the position intersected with the diaphragm plate on the U ribs.
Preferably, the backing plate is arranged on the inwall of the U ribs.
Preferably, the backing plate is shaped as square or circle.
Preferably, the backing plate is reinforcement backing plate.
Preferably, also including bolt；
The backing plate is bolted at the position intersected with the diaphragm plate by described.
Preferably, it is located on the U ribs and be respectively symmetrically described in setting at least one on the wallboard of the diaphragm plate both sides
Bolt.
Preferably, the bolt is high-strength bolt.
Based on same inventive concept, the present invention implements also to provide a kind of bridge, including orthotropic plate as above
Panel.
Based on same inventive concept, the embodiment of the present invention also provides a kind of processing method of Orthotropic Steel Bridge Deck, bag
Include：
Backing plate is fixed in the corresponding position intersected with diaphragm plate on U ribs；
The U ribs for carrying the backing plate are fixed on steel bridge deck body；
The diaphragm plate is fixed on the steel bridge deck body, and, make the diaphragm plate in place in backing plate institute
Put place to intersect with the U ribs.
Preferably, the diaphragm plate is fixed on the steel bridge deck body described, and, the diaphragm plate is made in institute
State after intersecting with the U ribs at backing plate position, methods described also includes：
Weld the weld seam between the U ribs and the diaphragm plate.
One or more technical schemes in the embodiment of the present invention, at least have the following technical effect that or advantage：
The present invention at the U ribs in Orthotropic Steel Bridge Deck and the cross-coupled position of diaphragm plate by arranging backing plate, energy
Enough effectively improve the rigidity of structure of U ribs and diaphragm plate junction, reduce the local deformation of U rib wallboards, so improve U ribs and
The fatigue life of diaphragm plate junction, also, backing plate takes up space little inside U ribs, does not interfere with U rib internal welding machine device people in U
The traveling of rib inside and the welding of the inner side angle welding that U ribs are connected with steel bridge deck.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can be with basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the fatigue crack distribution schematic diagram of Orthotropic Steel Bridge Deck in prior art；
Fig. 2 is structural representation of a kind of Orthotropic Steel Bridge Deck under the first visual angle in the embodiment of the present invention；
Fig. 3 is structural representation of a kind of Orthotropic Steel Bridge Deck under the second visual angle in the embodiment of the present invention；
Fig. 4 is a kind of flow chart of the processing method of Orthotropic Steel Bridge Deck in the embodiment of the present invention.
Wherein, 1 is steel bridge deck body, and 2 is diaphragm plate, and 3 is U ribs, and 4 is backing plate, and 5 is bolt, and 6 is weld seam.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of Orthotropic Steel Bridge Deck, as shown in Fig. 2 the Orthotropic Steel Bridge Deck includes
Steel bridge deck body 1, diaphragm plate 2, U ribs 3 and backing plate 4.U ribs 3 and diaphragm plate 2 are fixed on the same side of Steel Bridge Deck body, and, U
Rib 3 intersects with diaphragm plate 2, has weld seam 6 between U ribs 3 and diaphragm plate 2.Backing plate 4 is arranged on U ribs 3, specifically, backing plate
4 are arranged at U ribs 3 and the cross-coupled position of diaphragm plate 2.As a rule, the thickness range of diaphragm plate 2 be 10～16mm, U ribs
3 thickness range is 6～10mm, wherein, the thickness range of backing plate 4 can be 8～12mm, 160～180mm of length range, wide
Degree 130～150mm of scope.
The application by arranging backing plate 4 at the U ribs 3 in Orthotropic Steel Bridge Deck and the cross-coupled position of diaphragm plate 2,
Backing plate 4 can improve the local stiffness of U ribs 3, under the effect of bridge floor local wheel load, reduce U ribs 3 and the attachment weld end of diaphragm plate 2
Stress amplitude at the U rib wallboards in portion, so as to improve the fatigue life of U ribs 3 and the junction of diaphragm plate 2, also, backing plate 4 in U
Take up space inside rib 3 little, do not interfere with internal welding machine device people and advance and U ribs 3 are connected with steel bridge deck body 1 inside U ribs 3
Inner side angle welding 6 welding.
In this application, the shape of backing plate 4 can be circle, or square, those skilled in the art can basis
It is actually needed and backing plate 4 is processed into arbitrary shape, the application is not limited this.In addition, backing plate 4 can be sharp to strengthen backing plate
Can effectively increase the rigidity of U ribs 3 and the junction U rib wallboards of diaphragm plate 2 with backing plate is strengthened.Further, a kind of preferred
In embodiment, backing plate 4 is arranged on the inwall of U ribs 3, so as to backing plate 4 will not be to the diaphragm plate 2 on U ribs 3 arranged in a crossed manner
Position impact.
Further, the Orthotropic Steel Bridge Deck of the application also includes bolt 5, and backing plate 4 is fixed on and tabula by bolt 5
At the position that plate 2 intersects.The application is attached backing plate 4 with U ribs 3 by way of bolt, therefore, will not only give structure
Increase new stress concentration point, nor can there is a problem of because welding quality unstable affects structural fatigue performance.One
In planting preferred embodiment, it is located on U ribs 3 on the wallboard of the both sides of diaphragm plate 1 and is respectively symmetrically at least one bolt 5 of setting,
That is, the bolt 5 being arranged on backing plate 4 is symmetrically distributed on the wallboard of the both sides of U ribs 3, as shown in Figure 3.The application is by U ribs 3
At least one bolt 5 is symmetrical arranged on the wallboard of both sides and ensure that backing plate 4 is consolidated on U ribs 3, and further increase U ribs 3
With the rigidity of structure of the junction of diaphragm plate 2.Wherein, the bolt 5 in the application can be high-strength bolt.
Based on same inventive concept, the embodiment of the present invention also provides a kind of bridge, including orthotropic steel as above
Floorings.
Based on same inventive concept, the embodiment of the present invention also provides a kind of processing method of Orthotropic Steel Bridge Deck, such as
Shown in Fig. 4, the processing method is comprised the following steps：
Step 401：Backing plate 4 is fixed in the corresponding position intersected with diaphragm plate 2 on U ribs 3.
In specific implementation process, U ribs 3 are made first.Specifically, be first the blanking of U ribs 3, milling side, open system welding slope
Mouthful, the thickness range of U ribs 3 can be 6～10mm.Then, system bolt is opened in each corresponding position intersected with diaphragm plate 2
Hole, then, the bending process on bender is processed backing plate 4 into U ribs 3, at the same time and is opened and makes bolt hole, the thickness of backing plate 4
8～12mm is may range from, then backing plate 4 is positioned on the inwall of U ribs 3, blending bolt 5 bolts in backing plate 4 and U ribs 3 stubborn
Tightly.Wherein, the shape of backing plate 4 can be circle, or square, those skilled in the art can according to actual needs by pad
Plate 4 is processed into arbitrary shape, and the application is not limited this.In addition, backing plate 4 can be to strengthen backing plate, using reinforcement backing plate energy
The enough rigidity for effectively increasing U ribs 3 and the junction U rib wallboards of diaphragm plate 2.In a preferred embodiment, on U ribs 3
At least one bolt 5 of setting is respectively symmetrically on the wallboard of diaphragm plate both sides, i.e. the bolt 5 being arranged on backing plate 4 symmetrically divides
Cloth ensure that backing plate 4 in the both sides of diaphragm plate 2, the application by being symmetrical arranged at least one bolt 5 in the both sides of diaphragm plate 2
Consolidate on U ribs 3, and further increase the rigidity of structure of U ribs 3 and the junction of diaphragm plate 2.Wherein, the bolt 5 in the application
It can be high-strength bolt.
Step 402：The U ribs 3 for carrying backing plate 4 are fixed on steel bridge deck body 1.
In specific implementation process, the U ribs 3 for carrying backing plate 4 are assembled with steel bridge deck body 1, then carried out U ribs
Interior weldering, outside weld and correction, so as to complete that U ribs 3 are fixed on steel bridge deck body 1.
Step 403：Diaphragm plate 2 is fixed on steel bridge deck body 1, and, make diaphragm plate 2 at the position of backing plate 4
Intersect with U ribs 3.
In specific implementation process, the thickness range of diaphragm plate 2 can be 10～16mm, and diaphragm plate 2 is being fixed into steel
On floorings, and, after diaphragm plate 2 is intersected with U ribs 3 at the position of backing plate 4, between welding U ribs 3 and diaphragm plate 2
Weld seam 6.
The application is not only applied due to backing plate 4 is fixed on U ribs 3 before U ribs 3 are fixed on steel bridge deck body 1
Work is convenient, does not also interfere with the welding of weld seam 6 between U ribs 3 and diaphragm plate 2.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
The present invention at the U ribs in Orthotropic Steel Bridge Deck and the cross-coupled position of diaphragm plate by arranging backing plate, energy
Enough effectively improve the rigidity of structure of U ribs and diaphragm plate junction, reduce the local deformation of U rib wallboards, so improve U ribs and
The fatigue life of diaphragm plate junction, also, backing plate takes up space little inside U ribs, does not interfere with U rib internal welding machine device people in U
The traveling of rib inside and the welding of the inner side angle welding that U ribs are connected with steel bridge deck.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (10)
1. a kind of Orthotropic Steel Bridge Deck, it is characterised in that including steel bridge deck body, diaphragm plate, U ribs and backing plate；
The U ribs and the diaphragm plate are fixed on the same side of the Steel Bridge Deck body, and, the U ribs and the diaphragm plate phase
Mutually intersect；
The backing plate is arranged at the position intersected with the diaphragm plate on the U ribs.
2. Orthotropic Steel Bridge Deck as claimed in claim 1, it is characterised in that the backing plate is arranged on the interior of the U ribs
On wall.
3. Orthotropic Steel Bridge Deck as claimed in claim 1, it is characterised in that the backing plate is shaped as square or circle
Shape.
4. Orthotropic Steel Bridge Deck as claimed in claim 1, it is characterised in that the backing plate is to strengthen backing plate.
5. Orthotropic Steel Bridge Deck as claimed in claim 1, it is characterised in that also including bolt；
The backing plate is bolted at the position intersected with the diaphragm plate by described.
6. Orthotropic Steel Bridge Deck as claimed in claim 5, it is characterised in that the diaphragm plate is located on the U ribs
Bolt described in setting at least one is respectively symmetrically on the wallboard of both sides.
7. Orthotropic Steel Bridge Deck as claimed in claim 5, it is characterised in that the bolt is high-strength bolt.
8. a kind of bridge, it is characterised in that include the orthotropic steel bridge deck as described in any claim in claim 1-7
Plate.
9. a kind of processing method of Orthotropic Steel Bridge Deck, it is characterised in that include：
Backing plate is fixed in the corresponding position intersected with diaphragm plate on U ribs；
The U ribs for carrying the backing plate are fixed on steel bridge deck body；
The diaphragm plate is fixed on the steel bridge deck body, and, make the diaphragm plate at the backing plate position
Intersect with the U ribs.
10. processing method as claimed in claim 9, it is characterised in that the diaphragm plate is fixed into the steel bridge described
On panel body, and, after the diaphragm plate is intersected with the U ribs at the backing plate position, methods described is also wrapped
Include：
Weld the weld seam between the U ribs and the diaphragm plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913273.4A CN106638301A (en) | 2016-10-19 | 2016-10-19 | Orthotropic steel bridge deck and machining method as well as bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913273.4A CN106638301A (en) | 2016-10-19 | 2016-10-19 | Orthotropic steel bridge deck and machining method as well as bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106638301A true CN106638301A (en) | 2017-05-10 |
Family
ID=58856476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610913273.4A Pending CN106638301A (en) | 2016-10-19 | 2016-10-19 | Orthotropic steel bridge deck and machining method as well as bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106638301A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630402A (en) * | 2017-09-28 | 2018-01-26 | 长沙理工大学 | A kind of cross bridge floor board bolt plumb joint and outer width formula splice plate |
| CN109732243A (en) * | 2018-12-27 | 2019-05-10 | 长安大学 | Antifatigue structural optimization method at a kind of orthotropic plate U rib and diaphragm plate weld all around |
| CN110605494A (en) * | 2019-10-10 | 2019-12-24 | 清华大学 | Detachable assembled steel box girder U rib structure and process |
| CN113356051A (en) * | 2021-07-16 | 2021-09-07 | 辽宁工程技术大学 | Horizontal prestressing force U rib steel bridge floor plate structure |
| CN114032764A (en) * | 2021-09-30 | 2022-02-11 | 河海大学 | Steel bar reinforcing structure for repairing fatigue cracks of U-rib butt weld and construction method thereof |
| CN114753249A (en) * | 2022-05-31 | 2022-07-15 | 浙江中隧桥波形钢腹板有限公司 | Take turn-ups cross rib and bridge floor structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505628A (en) * | 2011-11-23 | 2012-06-20 | 广东省公路勘察规划设计院股份有限公司 | Closed U-shaped stiffening rib for preventing fatigue cracks of steal bridge and construction method of closed U-shaped stiffening rib |
| JP2013245459A (en) * | 2012-05-24 | 2013-12-09 | Hanshin Expressway Co Ltd | Steel floor board and steel floor board bridge |
| CN103920974A (en) * | 2014-03-12 | 2014-07-16 | 中铁宝桥集团有限公司 | Large steel bridge deck and manufacture method thereof |
| CN204753384U (en) * | 2015-07-21 | 2015-11-11 | 扬州工业职业技术学院 | Connection structure of orthotropic steel bridge deck board |
| CN205046474U (en) * | 2015-07-28 | 2016-02-24 | 邵旭东 | Steel - ultra high performance concrete makes up bridge deck structure with reinforce structure |
-
2016
- 2016-10-19 CN CN201610913273.4A patent/CN106638301A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505628A (en) * | 2011-11-23 | 2012-06-20 | 广东省公路勘察规划设计院股份有限公司 | Closed U-shaped stiffening rib for preventing fatigue cracks of steal bridge and construction method of closed U-shaped stiffening rib |
| JP2013245459A (en) * | 2012-05-24 | 2013-12-09 | Hanshin Expressway Co Ltd | Steel floor board and steel floor board bridge |
| CN103920974A (en) * | 2014-03-12 | 2014-07-16 | 中铁宝桥集团有限公司 | Large steel bridge deck and manufacture method thereof |
| CN204753384U (en) * | 2015-07-21 | 2015-11-11 | 扬州工业职业技术学院 | Connection structure of orthotropic steel bridge deck board |
| CN205046474U (en) * | 2015-07-28 | 2016-02-24 | 邵旭东 | Steel - ultra high performance concrete makes up bridge deck structure with reinforce structure |
Non-Patent Citations (2)
| Title |
|---|
| 叶翔等: "正交异性钢桥面板结构加工技术工艺", 《钢结构》 * |
| 李大涛: "钢箱梁细部构造疲劳试验研究及局部优化", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630402A (en) * | 2017-09-28 | 2018-01-26 | 长沙理工大学 | A kind of cross bridge floor board bolt plumb joint and outer width formula splice plate |
| CN109732243A (en) * | 2018-12-27 | 2019-05-10 | 长安大学 | Antifatigue structural optimization method at a kind of orthotropic plate U rib and diaphragm plate weld all around |
| CN110605494A (en) * | 2019-10-10 | 2019-12-24 | 清华大学 | Detachable assembled steel box girder U rib structure and process |
| CN110605494B (en) * | 2019-10-10 | 2020-07-24 | 清华大学 | Detachable assembled steel box girder U rib structure and process |
| CN113356051A (en) * | 2021-07-16 | 2021-09-07 | 辽宁工程技术大学 | Horizontal prestressing force U rib steel bridge floor plate structure |
| CN113356051B (en) * | 2021-07-16 | 2023-02-24 | 辽宁工程技术大学 | Horizontal prestressing force U rib steel bridge floor plate structure |
| CN114032764A (en) * | 2021-09-30 | 2022-02-11 | 河海大学 | Steel bar reinforcing structure for repairing fatigue cracks of U-rib butt weld and construction method thereof |
| CN114032764B (en) * | 2021-09-30 | 2023-02-14 | 河海大学 | Steel bar reinforcing structure for repairing fatigue cracks of U-rib butt weld and construction method thereof |
| CN114753249A (en) * | 2022-05-31 | 2022-07-15 | 浙江中隧桥波形钢腹板有限公司 | Take turn-ups cross rib and bridge floor structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106638301A (en) | Orthotropic steel bridge deck and machining method as well as bridge | |
| CN103243818B (en) | The connected node of a kind of concrete column and girder steel | |
| CN108382989A (en) | Rail box-girder and its manufacturing method during large-tonnage bridge crane is used | |
| CN103831507A (en) | Large-span steel truss girder bridge whole joist full-welding joint welding method | |
| CN101693336B (en) | Technique for processing circular ring box type beam of lifting tool | |
| CN208934146U (en) | A kind of deformation joint structure | |
| CN204565415U (en) | A kind of friction stir welding sleeper beam structure for car body and section bar I thereof and section bar II | |
| CN102602355B (en) | Stiffener and manufacture method thereof and the ROPS with this stiffener | |
| CN204210582U (en) | Vehicle and body mount attachment point thereof strengthen structure | |
| WO2023159923A1 (en) | Rear tailstock assembly, frame and working machine | |
| CN203050123U (en) | Arm frame and engineering machinery comprising arm frame | |
| CN206485148U (en) | Back pressure bar assembly and automobile | |
| CN205446926U (en) | Novel bearing support in truss | |
| CN205836522U (en) | Acoustic filter mounting assembly and muffler installation structure | |
| CN205382563U (en) | Steel structure support frame | |
| CN104339096B (en) | Post beam welding point and manufacture method thereof | |
| CN205259348U (en) | Adopt tiling steel plate structure of T type rib | |
| CN205857378U (en) | Concrete beam and the Component composition structure of brick wall | |
| CN205820082U (en) | A kind of powder tank car tank body | |
| CN204876098U (en) | I -section is connecting device for girder steel | |
| CN205819323U (en) | Automobile accessory frame and automobile | |
| CN205185808U (en) | Strenghthened type dregs tipper back door | |
| CN104631828B (en) | Engineering machinery driving cabin main body framework and manufacture method, driver's cabin and engineering machinery | |
| CN205637124U (en) | Steel -frame pillar post connected node | |
| CN205000391U (en) | Rotary teeth circle structure and leveler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |
|
| RJ01 | Rejection of invention patent application after publication |