CN113585076A - Construction method of overwater large-span double-layer cast-in-place beam - Google Patents
Construction method of overwater large-span double-layer cast-in-place beam Download PDFInfo
- Publication number
- CN113585076A CN113585076A CN202110771465.7A CN202110771465A CN113585076A CN 113585076 A CN113585076 A CN 113585076A CN 202110771465 A CN202110771465 A CN 202110771465A CN 113585076 A CN113585076 A CN 113585076A
- Authority
- CN
- China
- Prior art keywords
- steel
- cast
- bearing platform
- place beam
- overwater
- 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
- 238000010276 construction Methods 0.000 title claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 112
- 239000010959 steel Substances 0.000 claims abstract description 112
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 238000009415 formwork Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000003908 quality control method Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a construction method of an overwater large-span double-layer cast-in-place beam, which adopts a support structure to carry out the construction of the overwater large-span double-layer cast-in-place beam, realizes the two-time vertical rotation of a steel inclined strut through a hinge system, ensures that the double-layer cast-in-place beam shares one set of support during the construction, avoids the temporary support of underwater construction, solves the problem of the space collision between a support column and a cofferdam wall body, ensures that the structure safety and the quality control point are more clear, and has the advantages of convenient implementation, safety and reliability.
Description
Technical Field
The invention relates to the field of construction of cast-in-place concrete bridge superstructure, in particular to a construction method of an overwater large-span double-layer cast-in-place beam.
Background
Along with the large-scale construction of river-crossing bridges, the bridge construction field faces more complicated construction environments and more construction technical problems, and a plurality of river-crossing and river-crossing bridges in China adopt a double-layer structure form in order to reduce construction cost and construction land. In view of the factors of limited overwater operation conditions, complex geological conditions, variable meteorological environments and the like, the design and construction of the cast-in-place support for the bridge are more complex than those of a common bridge.
At present, the traditional overwater cast-in-place bridge support has the structural forms of multi-span type, single-span type, inclined leg three-span type and the like.
The construction of the land double-layer cast-in-place beam can be carried out by adopting a multi-span support method, namely, firstly, a support is erected to construct a lower-layer cast-in-place beam, then, an upper-layer cast-in-place beam support is erected on the basis of a lower-layer cast-in-place box with designed strength, and then, an upper-layer cast-in-place beam is constructed. And for the double-layer cast-in-place beam on water, the construction difficulty of directly erecting temporary supports in water is high, the cost is high, and the construction period is influenced. The single-span cast-in-place support is based on the existing bearing platform and does not need to pile in water, but the large-span support has higher requirements on the strength and rigidity of the bearing main beam and has poorer integral stability. The inclined leg three-span type support needs to arrange the support column on the bearing platform, but for the underwater bearing platform, the inclined leg support column has the problem of collision with the space of the cofferdam wall body, and is difficult to operate.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a construction method of an overwater large-span double-layer cast-in-place beam.
In order to achieve the purpose, the invention adopts the following technical scheme: a construction method of an overwater large-span double-layer cast-in-place beam is characterized in that a support structure is adopted to carry out overwater large-span double-layer cast-in-place beam construction, the support structure comprises a plurality of steel pipe upright posts 4 connected to a bearing platform 1 and distributed in rows, a plurality of steel inclined struts 5 connected to the bearing platform 1 and distributed in rows, a plurality of main cross beams 8, a plurality of main longitudinal beams 9 and a template system 10, the steel pipe upright posts 4 correspond to the steel inclined struts 5 one by one, a plurality of embedded steel plates 6 matched with the steel pipe upright posts 4 and a plurality of hinge systems 7 matched with the steel inclined struts 5 are embedded in the bearing platform 1, the embedded steel plates 6 are used for connecting the steel pipe upright posts 4, the hinge systems 7 are used for hinging the steel inclined struts 5, the number of the bearing platform 1 is 2, a pier body 2 is installed on each bearing platform 1, and a parallel connection 11 can be detachably connected between each adjacent steel pipe upright post 4 and each other steel inclined strut 5 and between each other two adjacent steel inclined struts 5, the main cross beam 8 is distributed at the upper ends of the steel tube upright posts 4 and the steel inclined struts 5, the main longitudinal beam 9 is positioned on the top surface of the main cross beam 8 and is vertically connected with the main cross beam 8, and the template system 10 is positioned on the top surface of the main longitudinal beam 9;
the construction method of the overwater large-span double-layer cast-in-place beam comprises the following specific steps:
a, constructing a bearing platform 1 and a pier body 2 by using an anhydrous operation environment provided by a steel cofferdam 3, arranging a first embedded steel plate 6 and a hinge system 7 on the top surface of the bearing platform 1, hoisting a steel pipe upright post 4 by using a hoisting machine, fixing the steel pipe upright post 4 on the bearing platform 1 by welding the bottom end of the steel pipe upright post 4 with the first embedded steel plate 6, hinging a steel inclined strut 5 on the bearing platform 1 by using the hinge system 7, and temporarily and vertically fixing the steel inclined strut 5;
b, manually cutting off the steel cofferdam 3 underwater to provide a rotating space for the steel inclined strut 5;
c, rotating the steel inclined strut 5 to a designed position by using a hoisting machine, and timely installing and fixing the parallel connection 11;
d, hoisting a main cross beam 8 by using a hoisting machine, respectively fixing the main cross beam to the top ends of the steel tube upright posts 4 and the steel inclined struts 5, and installing a template system 10 after hoisting a main longitudinal beam 9 by using the hoisting machine to complete the erection of an upper layer supporting structure;
e, constructing the upper cast-in-place beam 12 on the template system 10, thereby completing the construction of the upper cast-in-place beam 12;
f, temporarily fixing the main cross beam 8 and the components above by using the hoisting system 13, cutting the steel pipe upright post 4 and the steel inclined strut 5 at the designed position, removing the parallel connection 11, rotating the steel inclined strut 5 to the designed position for the second time, then installing the parallel connection 11 again, and lowering the main cross beam 8 and the components above by using the hoisting system 13 to complete the erection of the lower-layer supporting structure;
and g, constructing the lower cast-in-place beam 14 on the formwork system 10, thereby completing the construction of the lower cast-in-place beam 14.
Particularly, the hinge system 7 comprises a second pre-embedded steel plate 72 pre-embedded on the bearing platform 1, a third lug plate 71 connected to the top surface of the second pre-embedded steel plate 72, two diagonal bracing reinforcing ends 73 connected to the lower end of the steel diagonal bracing 5 and a pin 74, wherein the two diagonal bracing reinforcing ends 73 are respectively positioned in two gaps formed by the third lug plate 71, and the diagonal bracing reinforcing ends 73 are hinged with the lug plates 71 through the pin 74.
Specifically, the ear plate 71 is welded to the top surface of the second pre-buried steel plate 72.
In particular, circular holes are reserved on the ear plate 71 and the bracing reinforcing end 73, and the two ends are hinged through a pin 74.
The invention has the beneficial effects that: according to the invention, two times of vertical rotation of the steel diagonal brace is realized through the hinge system, one set of support is shared during construction of the double-layer cast-in-place girder, temporary support in underwater construction is avoided, the problem of collision between a support column and the wall space of the cofferdam is solved, the structure safety and quality control point are more clear, and the double-layer cast-in-place girder has the advantages of convenience in implementation, safety and reliability.
Drawings
FIG. 1 is an elevation view of a bridge prior to construction of a support structure;
FIG. 2 is an elevation view of an upper cast-in-place beam;
FIG. 3 is a construction elevation of a lower cast-in-place beam;
FIG. 4 is a schematic structural view of the hinge system;
5-11 are construction steps of the double-layer cast-in-place beam;
in the figure: 1-a bearing platform; 2-pier body; 3-steel cofferdam; 4-steel tube column; 5-steel diagonal bracing; 6-embedding a steel plate in advance; 7-an articulated system; 8-a main beam; 9-main longitudinal beam; 10-a template system; 11-parallel connection; 12-upper cast-in-place beam; 13-hoisting and placing the system; 14-lower cast-in-place beam; 71-ear plate; 72-second pre-buried steel plate, 73-diagonal bracing reinforcement end; 74-a pin shaft;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 11, a construction method of an overwater large-span double-layer cast-in-place beam is characterized in that a support structure is adopted to carry out overwater large-span double-layer cast-in-place beam construction, the support structure comprises a plurality of steel pipe upright posts 4 connected to a bearing platform 1 and distributed in rows, a plurality of steel inclined struts 5 connected to the bearing platform 1 and distributed in rows, a plurality of main cross beams 8, a plurality of main longitudinal beams 9 and a template system 10, the steel pipe upright posts 4 correspond to the steel inclined struts 5 one by one, a plurality of embedded steel plates 6 matched with the steel pipe upright posts 4 and a plurality of hinge systems 7 matched with the steel inclined struts 5 are embedded in the bearing platform 1, the embedded steel plates 6 are used for connecting the steel pipe upright posts 4, the hinge systems 7 are used for hinging the steel inclined struts 5, the number of the bearing platform 1 is 2, a pier body 2 is installed on each bearing platform 1, and parallel connections 11 can be detachably connected between the adjacent steel pipe upright posts 4 and the steel inclined struts 5 and between the adjacent two steel inclined struts 5, the main cross beam 8 is distributed at the upper ends of the steel tube upright posts 4 and the steel inclined struts 5, the main longitudinal beam 9 is positioned on the top surface of the main cross beam 8 and is vertically connected with the main cross beam 8, and the template system 10 is positioned on the top surface of the main longitudinal beam 9;
the construction method of the overwater large-span double-layer cast-in-place beam comprises the following specific steps:
a, as shown in fig. 5, constructing a bearing platform 1 and a pier body 2 by using a waterless operation environment provided by a steel cofferdam 3, arranging a first embedded steel plate 6 and a hinge system 7 on the top surface of the bearing platform 1, hoisting a steel pipe upright post 4 by using a hoisting machine, fixing the steel pipe upright post 4 on the bearing platform 1 by welding the bottom end of the steel pipe upright post 4 with the first embedded steel plate 6, hinging a steel inclined strut 5 on the bearing platform 1 by using the hinge system 7, and temporarily and vertically fixing the steel inclined strut 5;
b, as shown in fig. 6, manually and underwater cutting off the steel cofferdam 3 to provide a rotating space for the steel inclined strut 5;
c, as shown in fig. 7, rotating the steel inclined strut 5 to a designed position by using a hoisting machine, and timely installing and fixing the parallel connection 11;
d, as shown in fig. 8, hoisting a main cross beam 8 by using a hoisting machine, respectively fixing the main cross beam to the top ends of the steel tube upright posts 4 and the steel inclined struts 5, and installing a template system 10 after hoisting a main longitudinal beam 9 by using the hoisting machine to complete the erection of the upper-layer supporting structure;
e, as shown in fig. 9, constructing the upper cast-in-place beam 12 on the formwork system 10, thereby completing the construction of the upper cast-in-place beam 12;
as shown in fig. 10, temporarily fixing the main beam 8 and the members above by using the hoisting system 13, cutting the steel pipe upright 4 and the steel inclined strut 5 at the designed position, removing the parallel connection 11, rotating the steel inclined strut 5 to the designed position for the second time, then installing the parallel connection 11 again, and lowering the main beam 8 and the members above by using the hoisting system 13 to complete the erection of the lower-layer supporting structure;
g as shown in fig. 11, the construction of the lower cast-in-place girder 14 is performed on the formwork system 10, thereby completing the construction of the lower cast-in-place girder 14.
Particularly, the hinge system 7 comprises a second pre-embedded steel plate 72 pre-embedded on the bearing platform 1, a third lug plate 71 connected to the top surface of the second pre-embedded steel plate 72, two diagonal bracing reinforcing ends 73 connected to the lower end of the steel diagonal bracing 5 and a pin 74, wherein the two diagonal bracing reinforcing ends 73 are respectively positioned in two gaps formed by the third lug plate 71, and the diagonal bracing reinforcing ends 73 are hinged with the lug plates 71 through the pin 74.
Specifically, the ear plate 71 is welded to the top surface of the second pre-buried steel plate 72.
In particular, circular holes are reserved on the ear plate 71 and the bracing reinforcing end 73, and the two ends are hinged through a pin 74.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (4)
1. A construction method of an overwater large-span double-layer cast-in-place beam is characterized in that a supporting structure is adopted to carry out overwater large-span double-layer cast-in-place beam construction, the supporting structure comprises a plurality of steel pipe stand columns (4) which are connected to a bearing platform (1) and distributed in a row, a plurality of steel inclined struts (5) which are connected to the bearing platform (1) and distributed in a row, a plurality of main cross beams (8), a plurality of main longitudinal beams (9) and a template system (10), the steel pipe stand columns (4) and the steel inclined struts (5) are in one-to-one correspondence, a plurality of embedded steel plates (6) which are matched with the steel pipe stand columns (4) and a plurality of hinge systems (7) which are matched with the steel inclined struts (5) are embedded in the bearing platform (1), the embedded steel plates (6) are used for connecting the steel pipe stand columns (4), the hinge systems (7) are used for hinging the steel inclined struts (5), the number of the bearing platforms (1) is 2, a pier body (2) is installed on each bearing platform (1), the adjacent steel pipe upright columns (4) and the adjacent steel inclined struts (5) and the adjacent two steel inclined struts (5) can be detachably connected with a parallel connection (11), the main cross beams (8) are distributed at the upper ends of the steel pipe upright columns (4) and the steel inclined struts (5), the main longitudinal beams (9) are positioned on the top surfaces of the main cross beams (8) and are vertically connected with the main cross beams (8), and the template system (10) is positioned on the top surfaces of the main longitudinal beams (9);
the construction method of the overwater large-span double-layer cast-in-place beam comprises the following specific steps:
a, constructing a bearing platform (1) and a pier body (2) by using an anhydrous operation environment provided by a steel cofferdam (3), arranging a first embedded steel plate (6) and a hinge system (7) on the top surface of the bearing platform (1), hoisting a steel pipe upright (4) by using a hoisting machine, fixing the steel pipe upright (4) on the bearing platform (1) by welding the bottom end of the steel pipe upright (4) with the first embedded steel plate (6), hinging a steel inclined strut (5) on the bearing platform (1) by using the hinge system (7), and temporarily and vertically fixing the steel inclined strut (5);
b, manually cutting off the steel cofferdam (3) underwater to provide a rotating space for the steel inclined strut (5);
c, rotating the steel inclined strut (5) to a designed position by using a hoisting machine, and timely installing a parallel connection (11) for fixing;
d, hoisting a main cross beam (8) by using a hoisting machine, respectively fixing the main cross beam to the top ends of the steel tube upright posts (4) and the steel inclined struts (5), and installing a template system (10) after hoisting a main longitudinal beam (9) by using the hoisting machine to complete the erection of an upper-layer supporting structure;
e, constructing the upper cast-in-place beam (12) on the template system (10), thereby completing the construction of the upper cast-in-place beam (12);
f, temporarily fixing the main cross beam (8) and the components above by using a hoisting system (13), cutting the steel pipe upright post (4) and the steel inclined strut (5) at the designed position, removing the parallel connection (11), rotating the steel inclined strut (5) to the designed position for the second time, then installing the parallel connection (11) again, and lowering the main cross beam (8) and the components above by using the hoisting system (13) to complete the erection of a lower-layer supporting structure;
and g, constructing the lower cast-in-place beam (14) on the formwork system (10), thereby completing the construction of the lower cast-in-place beam (14).
2. The construction method of the overwater large-span double-layer cast-in-place beam according to claim 1, wherein the hinge system (7) comprises a second pre-embedded steel plate (72) pre-embedded on the bearing platform (1), three ear plates (71) connected to the top surface of the second pre-embedded steel plate (72), two diagonal bracing reinforcing ends (73) connected to the lower end of the steel diagonal bracing (5) and a pin shaft (74), the two diagonal bracing reinforcing ends (73) are respectively located in two gaps formed by the three ear plates (71), and the diagonal bracing reinforcing ends (73) and the ear plates (71) are hinged together through the pin shaft (74).
3. The construction method of the overwater large-span double-layer cast-in-place beam as claimed in claim 2, wherein the lug plates (71) are welded on the top surfaces of the second embedded steel plates (72).
4. The construction method of the overwater large-span double-layer cast-in-place beam as claimed in claim 3, wherein circular holes are reserved in the ear plates (71) and the bracing reinforcing end heads (73), and the ear plates and the bracing reinforcing end heads are hinged through pin shafts (74).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110771465.7A CN113585076A (en) | 2021-07-08 | 2021-07-08 | Construction method of overwater large-span double-layer cast-in-place beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110771465.7A CN113585076A (en) | 2021-07-08 | 2021-07-08 | Construction method of overwater large-span double-layer cast-in-place beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113585076A true CN113585076A (en) | 2021-11-02 |
Family
ID=78246456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110771465.7A Pending CN113585076A (en) | 2021-07-08 | 2021-07-08 | Construction method of overwater large-span double-layer cast-in-place beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113585076A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117005305A (en) * | 2023-07-05 | 2023-11-07 | 中国铁建港航局集团有限公司 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202369930U (en) * | 2011-12-29 | 2012-08-08 | 上海市机械施工有限公司 | Door opening type bearing framed bent device for multiplayer concrete box girder |
| CN103243652A (en) * | 2013-05-06 | 2013-08-14 | 中铁二十四局集团安徽工程有限公司 | Large-span non-floor type cast-in-place beam falsework and construction method thereof |
| CN104452597A (en) * | 2014-11-25 | 2015-03-25 | 中建六局第三建筑工程有限公司 | Supporting system for construction of super-long water pier prestressed cap beam |
| CN104695336A (en) * | 2015-01-15 | 2015-06-10 | 中铁大桥局集团第五工程有限公司 | Double-layer cast-in-situ beam support construction method adopting sequence from upper layer to lower layer |
| KR101666109B1 (en) * | 2016-03-08 | 2016-10-13 | (주)삼우아이엠씨 | Construction method for bridge deck |
| CN107988913A (en) * | 2017-12-12 | 2018-05-04 | 中交公局第二工程有限公司 | A kind of bridge bilayer box beam upper former method for dismounting |
-
2021
- 2021-07-08 CN CN202110771465.7A patent/CN113585076A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202369930U (en) * | 2011-12-29 | 2012-08-08 | 上海市机械施工有限公司 | Door opening type bearing framed bent device for multiplayer concrete box girder |
| CN103243652A (en) * | 2013-05-06 | 2013-08-14 | 中铁二十四局集团安徽工程有限公司 | Large-span non-floor type cast-in-place beam falsework and construction method thereof |
| CN104452597A (en) * | 2014-11-25 | 2015-03-25 | 中建六局第三建筑工程有限公司 | Supporting system for construction of super-long water pier prestressed cap beam |
| CN104695336A (en) * | 2015-01-15 | 2015-06-10 | 中铁大桥局集团第五工程有限公司 | Double-layer cast-in-situ beam support construction method adopting sequence from upper layer to lower layer |
| KR101666109B1 (en) * | 2016-03-08 | 2016-10-13 | (주)삼우아이엠씨 | Construction method for bridge deck |
| CN107988913A (en) * | 2017-12-12 | 2018-05-04 | 中交公局第二工程有限公司 | A kind of bridge bilayer box beam upper former method for dismounting |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117005305A (en) * | 2023-07-05 | 2023-11-07 | 中国铁建港航局集团有限公司 | Construction method for constructing upper capping beam in prestressed concrete common pier section |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111794119B (en) | Temporary supporting system and hoisting method for basket type steel box tie bar arch | |
| CN216640288U (en) | Tower-passing sliding platform for steel box girder of cable-stayed bridge | |
| CN113585076A (en) | Construction method of overwater large-span double-layer cast-in-place beam | |
| CN214459689U (en) | Cast-in-place box girder support of weak soil foundation | |
| CN211949511U (en) | Aerial cast-in-place structure that encorbelments greatly strides sky combination bearing steel platform | |
| CN112376440A (en) | Construction process for non-closure hoisting of main beam of cable-stayed bridge | |
| CN111188281A (en) | Transverse moving support system for prefabricated beam frame facility working machinery and construction method | |
| CN216892017U (en) | Tie beam integral casting template in template connecting piece and lower stand | |
| CN114108641B (en) | Construction method for common foundation pit of bridge bearing platform and underground structure | |
| CN215052133U (en) | Steel case roof beam is alternately construction supporting structure from top to bottom | |
| CN111622091B (en) | Stress test method for prefabricated bridge pier | |
| CN114837090A (en) | Combined support system for high tower beam construction and construction method | |
| CN215405634U (en) | Supporting structure for construction of overwater large-span cast-in-situ beam | |
| CN115404901B (en) | Assembled slurry stirring station foundation and construction method | |
| CN217128046U (en) | Asymmetric pier supporting platform system device | |
| CN112726415B (en) | Steel box girder up-down crossing construction support structure and construction method | |
| CN218643330U (en) | Steel-pipe pile is inserted and is beaten construction platform | |
| CN217352174U (en) | Pier edge side span cast-in-place support | |
| CN216864843U (en) | Combined type bracket system for high-altitude transverse concrete member construction | |
| CN221052585U (en) | Installation system of full sand layer geological oversized-diameter composite pile steel pipe | |
| CN216947898U (en) | Cast-in-place arch bridge full hall formula and striding formula sectional support juncture mound horn mouth transition structure | |
| CN218147879U (en) | Steel support system structure for bridge pier and bearing platform dismantling and lowering reconstruction | |
| CN211973136U (en) | Cast-in-place bridge formwork support frame of large-span | |
| CN221297633U (en) | Upper jacking structure of cover beam removal | |
| CN217678621U (en) | Foundation structure of standard H-shaped steel tower |
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: 20211102 |
|
| RJ01 | Rejection of invention patent application after publication |