CN114482403A - Construction method of large-section stiff support column conversion beam in narrow space - Google Patents

Construction method of large-section stiff support column conversion beam in narrow space Download PDF

Info

Publication number
CN114482403A
CN114482403A CN202210193908.3A CN202210193908A CN114482403A CN 114482403 A CN114482403 A CN 114482403A CN 202210193908 A CN202210193908 A CN 202210193908A CN 114482403 A CN114482403 A CN 114482403A
Authority
CN
China
Prior art keywords
closed
loop
narrow space
stiff
construction method
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.)
Granted
Application number
CN202210193908.3A
Other languages
Chinese (zh)
Other versions
CN114482403B (en
Inventor
王国涛
王宜彬
崔瑞国
陈颂
贾红学
谢铭
张志平
杨晨
黎映呈
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Construction Eighth Engineering Division Co Ltd
Original Assignee
China Construction Eighth Engineering Division Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Construction Eighth Engineering Division Co Ltd filed Critical China Construction Eighth Engineering Division Co Ltd
Priority to CN202210193908.3A priority Critical patent/CN114482403B/en
Publication of CN114482403A publication Critical patent/CN114482403A/en
Application granted granted Critical
Publication of CN114482403B publication Critical patent/CN114482403B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/02Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0627Three-dimensional reinforcements composed of a prefabricated reinforcing mat combined with reinforcing elements protruding out of the plane of the mat

Abstract

The invention discloses a construction method of a large-section stiff support pillar transfer beam in a narrow space, which can efficiently and quickly finish the construction of the large-section transfer beam which is densely distributed with reinforcing steel bars and contains stiff steel plates in the narrow space, accelerate the construction progress of building engineering, and is a convenient, safe and efficient construction method. The invention solves the problem that the traditional beam steel bar binding method cannot normally carry out dense arrangement steel bar binding in a narrow space.

Description

Construction method of large-section stiff support column conversion beam in narrow space
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a large-section stiff support pillar transfer beam in a narrow space.
Background
In a building construction project, if the working condition of interactive construction with a tunnel and a subway exists, large-section conversion beam-supporting column conversion is needed, so that the axis of a column network is ensured, and the space requirements of the tunnel and the subway can be met. Under the working condition, a large-section conversion beam is adopted in design, the maximum section of the conversion beam is 3500mm multiplied by 3000mm, and the internal reinforcing steel bars of the conversion beam are densely arranged. The traditional beam steel bar binding method cannot normally carry out dense arrangement steel bar binding in a narrow space.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, a construction method of a large-section stiff support pillar conversion beam in a narrow space is provided so as to solve the problem that the traditional beam reinforcement binding method cannot carry out dense arrangement reinforcement binding normally in the narrow space.
In order to achieve the purpose, the construction method of the large-section stiff support pillar transfer beam in the narrow space comprises the following steps:
constructing a cushion layer at the pouring position of the transfer beam;
vertically erecting a stiff steel plate on the cushion layer through a fixing frame;
providing a plurality of door-shaped frames, and arranging the plurality of door-shaped frames at intervals along the length direction of the stiff steel plate so that a cross beam of each door-shaped frame crosses over the radial steel plate;
laying a plurality of layers of gluten on a cross beam of the plurality of door-shaped frames layer by layer from bottom to top, and arranging a first channel steel between two adjacent layers of gluten;
sleeving a plurality of closed-loop stirrups outside the plurality of layers of the gluten and the stiff steel plate, so that the closed-loop stirrups are hung on the plurality of layers of the gluten;
laying a plurality of layers of bottom ribs on the lower ends of the plurality of closed-loop stirrups from bottom to top layer by layer, and filling a second channel steel between every two adjacent layers of bottom ribs;
installing external twisted ribs on two opposite sides of the plurality of closed-loop stirrups, and installing horizontal tie bars between the external twisted ribs on the two sides of the closed-loop stirrups;
installing a vertical lacing wire between the gluten and the bottom rib to form a beam framework;
erecting a template outside the beam framework to form a pouring space;
and pouring concrete into the pouring space, so that the concrete coats the beam framework to be solidified to form the conversion beam.
Further, the fixing frame includes:
the bottom of the bearing beam is fixedly provided with two supporting legs, the supporting legs are placed on the cushion layer, and the stiff steel plate is placed on the bearing beam; and
the clamping inclined beam is connected to two opposite ends of the bearing beam respectively, the upper end of the clamping inclined beam faces the middle of the bearing beam and is arranged obliquely, a clamping gap is formed between the upper ends of the clamping inclined beams, and the stiff steel plate is embedded in the clamping gap.
Furthermore, the quantity of mount is the multichannel, the multichannel the mount is followed the length direction setting of strength nature steel sheet.
Furthermore, the lower part of the beam of the door-shaped frame is connected with two oppositely arranged upright posts, and the cushion layer is supported at the bottom ends of the upright posts.
Further, the gluten with the end muscle includes a plurality of combination muscle units respectively, combination muscle unit includes two unit muscle of vertical coincide together.
Further, the quantity of turning round the muscle outward is the multilayer, the top layer of the both sides of closed loop stirrup install between the muscle turn round outward horizontal lacing wire, the bottom of the both sides of closed loop stirrup install between the muscle turn round outward horizontal lacing wire.
Further, the quantity of vertical lacing wire is the multichannel, when the vertical lacing wire of installation, certainly the middle part orientation of closed loop stirrup the multichannel is installed respectively to the both sides portion of closed loop stirrup vertical lacing wire.
Further, the installation the middle part of closed loop stirrup behind the vertical lacing wire, in the middle part of closed loop stirrup turn round muscle, multilayer in the vertical lacing wire installation multilayer turn round muscle in with the intermediate level of the both sides of closed loop stirrup install the horizontal lacing wire between the muscle outward respectively.
The construction method of the large-section stiff support pillar transfer beam in the narrow space has the advantages that the construction of the large-section stiff support pillar transfer beam which is densely distributed with reinforcing steel bars and contains stiff steel plates is efficiently and quickly completed in the narrow space, the construction progress of building engineering is accelerated, and the construction method is convenient, safe and efficient.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 to 9 are schematic structural views of a construction method of a large-section stiffened joist conversion beam in a narrow space according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 9, the invention provides a construction method of a large-section stiff support pillar transfer beam in a narrow space, which comprises the following steps:
s1: and constructing a cushion layer at the pouring position of the transfer beam.
In this embodiment, adopt big cross-section conversion roof beam, maximum cross-section 3500mm x 3000mm, the reinforcing bar is arranged densely, and roof beam gluten and end muscle adopt vertical muscle form of combining, and 2000mm x 35mm strength nature steel sheet is inserted to the centre.
Before construction, according to the requirements of a drawing, a C15 concrete cushion layer with the thickness of 100mm is integrally poured in a construction area of the transfer beam, so that good operation conditions are provided for the site. Paying off is carried out on the cushion layer according to drawing marking information, and the section of the transfer beam is accurately released for positioning.
S2: referring to fig. 1 (the cushion layer is not shown in the drawing), a stiff steel plate 1 is vertically erected on the cushion layer through a fixing frame 2.
In the present embodiment, the fixing frame 2 includes: a carrier beam 21 and a clamping stringer 22.
Specifically, two support legs are fixedly arranged at the bottom of the support beam 21. The support legs rest on the cushion layer. The stiff steel plate 1 is laid on the joist 21. Opposite ends of the support beam 21 are connected with clamping inclined beams 22, respectively. The upper end of the clamping sloping beam 22 is obliquely arranged upwards towards the middle part of the bearing beam 21. A clamping gap is formed between the upper ends of the clamping inclined beams 22. The stiff steel plate 1 is embedded in the clamping gap.
The number of the fixing frames 2 is multiple, and the multiple fixing frames 2 are arranged along the length direction of the stiff steel plate 1.
In some embodiments, a multi-way mount is mounted on a base. Wherein, the base includes two equidirectional shaped steel that set up. And a plurality of fixing frames are arranged at intervals along the length direction of the section steel. The supporting legs of each supporting beam are respectively and fixedly arranged on the two section steels.
The steel plate fixing frames which are processed and manufactured in advance are erected on the stiffened steel plates, and one fixing frame is arranged every 2m along the length direction of the transfer beam. And then the stiff steel plate in the conversion beam is hoisted by matching the tower crane and the truck crane and placed in the clamping gap of the fixing frame and placed on the supporting beam.
S3: referring to fig. 2, a plurality of gate frames 3 are provided, and the plurality of gate frames 3 are arranged at intervals along the length direction of the stiff steel plate 1, so that the cross beam 31 of the gate frame 3 crosses over the radial steel plate.
In this embodiment, the lower part of the cross beam 31 of the door frame 3 is connected with two opposite upright posts, and the cushion is supported at the bottom ends of the upright posts. The number of the door-shaped frames is multiple, and the multiple door-shaped frames are arranged at intervals along the length direction of the stiff steel plate.
In this embodiment, the pitch of the plurality of gate frames and the pitch of the plurality of fixed frames are 2m, respectively.
S4: referring to fig. 3 and 4, a plurality of layers of gluten 41 are laid on the beam 31 of the multi-channel portal 3 from bottom to top layer by layer, and a first channel steel is arranged between two adjacent layers of gluten 41.
The gluten 41 with the end muscle 42 includes a plurality of combination muscle units respectively, combination muscle unit includes two unit muscle of vertical coincide together.
The gluten of conversion roof beam is vertical and muscle ligature, and specific ligature flow is as follows, and the installation of the vertical and muscle ligature of the bottom layer of gluten, first channel-section steel, so the ligature installation of multilayer gluten is accomplished to the successive layer.
S5: referring to fig. 5, a plurality of closed-loop stirrups 43 are sleeved outside the multi-layer gluten 41 and the stiff steel plate 1, so that the closed-loop stirrups 43 are hung on the multi-layer gluten 41.
And integrally binding the closed-loop stirrups outside the transfer beam, and binding and fixing the closed-loop outer stirrups and the gluten.
S6: referring to fig. 6 and 7, a plurality of layers of bottom ribs 42 are laid on the lower ends of the plurality of closed-loop stirrups 43 from bottom to top layer by layer, and a second channel steel is padded between two adjacent layers of bottom ribs 42.
The binding and fixing processes of the multilayer bottom ribs are the same as those of the gluten, and are not described again.
S7: referring to fig. 8, the plurality of closed-loop stirrups 43 are provided at opposite sides thereof with the outer twist bars 44, and the horizontal tie bars 46 are provided between the outer twist bars 44 at both sides of the closed-loop stirrups 43.
In the present embodiment, the number of the outer twisted ribs 44 is multiple layers. Horizontal lacing wires are installed between the outer twisted wires 44 of the top layer on both sides of the closed-loop stirrup 43. Horizontal lacing wires are installed between the outer torsion wires 44 of the bottom layer on both sides of the closed-loop stirrup 43.
S8: and a vertical lacing wire 47 is arranged between the gluten 41 and the bottom rib 42 to form the beam framework 4.
In this embodiment, the number of vertical tie bars 47 is plural. When the vertical tie bars 47 are installed, the plurality of vertical tie bars 47 are respectively installed at the middle part of the self-closed loop hoop towards the two side parts of the self-closed loop hoop.
After the vertical tie bar 47 in the middle of the closed-loop stirrup is installed, the multilayer inner twisted bar 4545 is installed on the vertical tie bar 47 in the middle of the closed-loop stirrup, and the horizontal tie bars 46 are respectively installed between the multilayer inner twisted bar 4545 and the outer twisted bars 44 in the middle layers of the two sides of the closed-loop stirrup 43.
S9: and erecting a template outside the beam framework 4 to form a pouring space.
And (4) finishing the whole construction of the reinforcement binding of the transfer beam, erecting a transfer beam template, and pouring the concrete at the position of the transfer beam after each subsection is accepted by each subsection.
S10: referring to fig. 9, concrete 5 is poured into the pouring space, so that the concrete covers the beam framework 4 to be solidified to form the transfer beam.
The construction method of the large-section stiff support pillar transfer beam in the narrow space efficiently and quickly completes the construction of the large-section transfer beam which is densely distributed with the reinforcing steel bars and contains the stiff steel plates in the narrow space, accelerates the construction progress of the building engineering, and is a convenient, safe and efficient construction method.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims (8)

1. A construction method of a large-section stiff support pillar transfer beam in a narrow space is characterized by comprising the following steps:
constructing a cushion layer at the pouring position of the transfer beam;
vertically erecting a stiff steel plate on the cushion layer through a fixing frame;
providing a plurality of door-shaped frames, and arranging the plurality of door-shaped frames at intervals along the length direction of the stiff steel plate so that a cross beam of each door-shaped frame crosses over the radial steel plate;
laying a plurality of layers of gluten on a cross beam of the plurality of door-shaped frames layer by layer from bottom to top, and arranging a first channel steel between two adjacent layers of gluten;
sleeving a plurality of closed-loop stirrups outside the plurality of layers of the gluten and the stiff steel plate, so that the closed-loop stirrups are hung on the plurality of layers of the gluten;
laying a plurality of layers of bottom ribs on the lower ends of the plurality of closed-loop stirrups from bottom to top layer by layer, and filling a second channel steel between every two adjacent layers of bottom ribs;
installing external twisted ribs on two opposite sides of the plurality of closed-loop stirrups, and installing horizontal tie bars between the external twisted ribs on the two sides of the closed-loop stirrups;
installing a vertical lacing wire between the gluten and the bottom rib to form a beam framework;
erecting a template outside the beam framework to form a pouring space;
and pouring concrete into the pouring space, so that the concrete coats the beam framework to be solidified to form the conversion beam.
2. The construction method of the large-section stiff joist conversion beam in the narrow space according to claim 1, wherein the fixing frame comprises:
the bottom of the bearing beam is fixedly provided with two supporting legs, the supporting legs are placed on the cushion layer, and the stiff steel plate is placed on the bearing beam; and
the clamping inclined beam is connected to two opposite ends of the bearing beam respectively, the upper end of the clamping inclined beam faces the middle of the bearing beam and is arranged obliquely, a clamping gap is formed between the upper ends of the clamping inclined beams, and the stiff steel plate is embedded in the clamping gap.
3. The construction method of the large-section stiff support pillar transfer beam in the narrow space according to claim 2, wherein the number of the fixing frames is multiple, and the multiple fixing frames are arranged along the length direction of the stiff steel plate.
4. The construction method of the large-section stiff support pillar transfer beam in the narrow space according to claim 1, wherein the lower part of the cross beam of the portal frame is connected with two oppositely arranged upright columns, and the cushion layer is supported at the bottom ends of the upright columns.
5. The construction method of the large-section stiff joist transfer beam in the narrow space according to claim 1, wherein the gluten and the bottom bar respectively comprise a plurality of combined bar units, and the combined bar units comprise two unit bars vertically overlapped together.
6. The construction method of the large-section stiff support pillar transfer beam in the narrow space according to claim 1, wherein the number of the outward-twisted ribs is multiple layers, the horizontal tie bars are installed between the outward-twisted ribs on the top layer of the two sides of the closed-loop stirrup, and the horizontal tie bars are installed between the outward-twisted ribs on the bottom layer of the two sides of the closed-loop stirrup.
7. The construction method of the large-section stiff support pillar transfer beam in the narrow space according to claim 6, wherein the number of the vertical tie bars is multiple, and when the vertical tie bars are installed, the multiple vertical tie bars are installed from the middle of the closed-loop hoop bar towards two side portions of the closed-loop hoop bar respectively.
8. The construction method of the large-section stiff joist conversion beam in the narrow space according to claim 7, characterized in that after the vertical tie bars in the middle of the closed-loop stirrups are installed, a plurality of layers of inner twisted bars are installed on the vertical tie bars in the middle of the closed-loop stirrups, and horizontal tie bars are respectively installed between the inner twisted bars and the outer twisted bars in the middle layers at both sides of the closed-loop stirrups.
CN202210193908.3A 2022-03-01 2022-03-01 Construction method of large-section stiff support column conversion beam in narrow space Active CN114482403B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210193908.3A CN114482403B (en) 2022-03-01 2022-03-01 Construction method of large-section stiff support column conversion beam in narrow space

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210193908.3A CN114482403B (en) 2022-03-01 2022-03-01 Construction method of large-section stiff support column conversion beam in narrow space

Publications (2)

Publication Number Publication Date
CN114482403A true CN114482403A (en) 2022-05-13
CN114482403B CN114482403B (en) 2023-09-01

Family

ID=81484707

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210193908.3A Active CN114482403B (en) 2022-03-01 2022-03-01 Construction method of large-section stiff support column conversion beam in narrow space

Country Status (1)

Country Link
CN (1) CN114482403B (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0235170A (en) * 1988-07-22 1990-02-05 Takenaka Komuten Co Ltd Reinforcement preassembling method for long span beam
CN103015716A (en) * 2012-11-28 2013-04-03 泰兴市第一建筑安装工程有限公司 Construction method for ultra-wide section conversion beam steel engineering
CN205712733U (en) * 2016-03-29 2016-11-23 杭州江润科技有限公司 Super-section strengthening concrete conversion beam formwork system
WO2016183639A1 (en) * 2015-05-21 2016-11-24 Lifting Point Pre-Form Pty Limited A module for a structure
CN106245770A (en) * 2016-08-31 2016-12-21 中国建筑第八工程局有限公司 Expanded letter variable cross-section annular stiff beam construction method
CN106760189A (en) * 2017-03-15 2017-05-31 湖南城市学院 Tall building structure transfer beam construction method
CN107035067A (en) * 2017-06-12 2017-08-11 中建局集团第建筑有限公司 The variable section structure and its construction method of a kind of stiff beam
CN206737440U (en) * 2017-05-10 2017-12-12 江苏省华建建设股份有限公司 A kind of crossbeam assembling reinforcement structure
CN110863608A (en) * 2019-11-20 2020-03-06 中国十七冶集团有限公司 Construction method of large-span space section beam
CN113006477A (en) * 2021-03-06 2021-06-22 中建三局集团(深圳)有限公司 High-altitude cantilever stiff structure and construction method thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0235170A (en) * 1988-07-22 1990-02-05 Takenaka Komuten Co Ltd Reinforcement preassembling method for long span beam
CN103015716A (en) * 2012-11-28 2013-04-03 泰兴市第一建筑安装工程有限公司 Construction method for ultra-wide section conversion beam steel engineering
WO2016183639A1 (en) * 2015-05-21 2016-11-24 Lifting Point Pre-Form Pty Limited A module for a structure
CN205712733U (en) * 2016-03-29 2016-11-23 杭州江润科技有限公司 Super-section strengthening concrete conversion beam formwork system
CN106245770A (en) * 2016-08-31 2016-12-21 中国建筑第八工程局有限公司 Expanded letter variable cross-section annular stiff beam construction method
CN106760189A (en) * 2017-03-15 2017-05-31 湖南城市学院 Tall building structure transfer beam construction method
CN206737440U (en) * 2017-05-10 2017-12-12 江苏省华建建设股份有限公司 A kind of crossbeam assembling reinforcement structure
CN107035067A (en) * 2017-06-12 2017-08-11 中建局集团第建筑有限公司 The variable section structure and its construction method of a kind of stiff beam
CN110863608A (en) * 2019-11-20 2020-03-06 中国十七冶集团有限公司 Construction method of large-span space section beam
CN113006477A (en) * 2021-03-06 2021-06-22 中建三局集团(深圳)有限公司 High-altitude cantilever stiff structure and construction method thereof

Also Published As

Publication number Publication date
CN114482403B (en) 2023-09-01

Similar Documents

Publication Publication Date Title
US11053647B2 (en) Module for a structure
CN111622374B (en) Composite structural wall and method of construction thereof
JP7229368B2 (en) High-speed construction structure and method for secondary lining in excavated tunnels with various cross-sections
KR100694503B1 (en) Downward construction system and method for 1-way girder and slab of underground structure
KR20130113315A (en) A building structure
CN213709853U (en) Prefabricated member, structural column, shear wall and semi-fabricated building structure
CN112942106A (en) Construction method of portal cable tower
CN114770706A (en) Novel light T-beam prefabricating equipment and prefabricating, installing and constructing method
CN110886227A (en) Main tower cast-in-place lower cross beam support system and construction method
CN211850371U (en) Stirrup cage structure in beam column core area
CN114482403A (en) Construction method of large-section stiff support column conversion beam in narrow space
CN215802633U (en) Laminated shear wall with steel constraint component
KR20180114821A (en) Joining structure for holloness type precast concrete column and thereof method
CN212388856U (en) Cast-in-place clear water concrete batter post structure of prestressing force
CN114045750A (en) Construction method of high pier column tie beam
KR102197994B1 (en) Construction method using beam-reinforced deck plate
CN111424883A (en) Prestressed cast-in-place clear water concrete inclined column structure and construction method thereof
CN113756193B (en) Hollow pier construction method
CN215670408U (en) Node connection structure of rib-outlet composite floor slab and cast-in-situ beam
CN115492389B (en) Construction method of large-section ultrahigh conversion beam
CN214657748U (en) Anchor-clamping connection prefabricated steel reinforced concrete frame
CN214143333U (en) Stiff skeleton
JPH0673783A (en) Construction of steel framed reinforced concrete column and steel beam
KR20090103308A (en) Method of 3-Storey 5-Car Column Free Plant Type Garage
JPH108725A (en) Constructing method for building frame

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
GR01 Patent grant
GR01 Patent grant