CN114033111A - Assembled cornice inclined roof and installation and construction method thereof - Google Patents

Assembled cornice inclined roof and installation and construction method thereof Download PDF

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Publication number
CN114033111A
CN114033111A CN202111487506.6A CN202111487506A CN114033111A CN 114033111 A CN114033111 A CN 114033111A CN 202111487506 A CN202111487506 A CN 202111487506A CN 114033111 A CN114033111 A CN 114033111A
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CN
China
Prior art keywords
parapet
cornice
assembled
installation
concrete
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Pending
Application number
CN202111487506.6A
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Chinese (zh)
Inventor
常自昌
梁军
巩利军
刘博�
杨擘
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Gansu Changcheng Construction Group Co ltd
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Gansu Changcheng Construction Group Co ltd
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Publication date
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Priority to CN202111487506.6A priority Critical patent/CN114033111A/en
Publication of CN114033111A publication Critical patent/CN114033111A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/14Junctions of roof sheathings to chimneys or other parts extending above the roof
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/15Trimming strips; Edge strips; Fascias; Expansion joints for roofs
    • E04D13/158Trimming strips; Edge strips; Fascias; Expansion joints for roofs covering the overhang at the eave side, e.g. soffits, or the verge of saddle roofs
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/14Junctions of roof sheathings to chimneys or other parts extending above the roof
    • E04D2013/1422Parapet building elements for retaining the roof flashing

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)

Abstract

The invention discloses an assembled cornice parapet and an installation and construction method thereof. The assembled cornice parapet of the invention, include: concrete poured parapet, concrete poured cornice connected with the parapet, structural steel bars and beam grooves which are arranged in the parapet and the cornice, and a preformed hole in which a structural column can be placed. The installation and construction method comprises the steps of fixing the lower parts of the vertical reinforcing steel bars of the parapet structure columns in the boundary beams during roof construction of the main structure, then hoisting the assembled cornice parapet on the boundary beams, inserting the upper parts of the vertical reinforcing steel bars of the parapet structure columns extending outwards into the reserved installation holes of the assembled cornice parapet, fixing the parapet on the boundary beams, and pouring concrete in the installation holes and the beam grooves. The prefabricated parapet structure with the cornice has the advantages that the forming quality is high, the construction efficiency can be greatly improved during assembly and installation, the engineering quality and the installation operation safety are ensured, the installation speed is improved, and the prefabricated parapet structure can be firmly combined with a roof of a main body structure.

Description

Assembled cornice inclined roof and installation and construction method thereof
Technical Field
The invention relates to a structure of an assembled corbel wall and an installation construction method of an assembled socket-type corbel slope roof.
Background
Buildings with cornice are a common building structure, and particularly, Chinese style archaized buildings adopt the structure more. The cornice building structure is complex, mostly along the top layer of the building by a circle, the engineering quantity is large, and the construction process is complex. In the prior art, an overhanging scaffold or a floor scaffold is generally arranged on a roof cornice to serve as an operation platform, but the overhanging scaffold needs to be pre-embedded with a U-shaped ring in advance, and holes need to be filled in reserved holes after I-shaped steel is removed, so that the workload is high, and the hole part is easy to generate shrinkage cracks and is a cold and hot bridge part; on the other hand, the cantilever scaffold has the advantages of large material consumption, long construction period, high material and management cost and great potential safety hazard. What adopt overhanging type scaffold to carry out the operation has the restriction to cornice length, and general cornice length is greater than more than 1m and has oblique roofing, should not adopt overhanging type scaffold to carry out the operation. Therefore, the parapet wall with the cornice structure is limited in the prior art, and the parapet wall is difficult to process.
To solve the problems of the prior art, utility model 202021189487. X discloses an assembled parapet member, which comprises a concrete wall body; steel bar frame, steel bar frame includes horizontal reinforcing bar, vertical reinforcing bar and horizontal reinforcing bar, and is a plurality of horizontal reinforcing bar sets up along concrete wall extending direction level, and wears out at the horizontal reinforcing bar both ends the concrete wall, vertical reinforcing bar and horizontal reinforcing bar set up inside the concrete wall, and vertical reinforcing bar and horizontal reinforcing bar are with a plurality of the horizontal reinforcement bar connection forms wholly. The inside equipartition of concrete wall body of this patent goes up the vertical reinforcing bar that the lower extreme does not expose, and form a whole with vertical steel bar connection through horizontal reinforcing bar and horizontal reinforcing bar, the concrete wall body is stretched out at horizontal reinforcing bar both ends, need not to adopt upper and lower layer sleeve grout process when the assembly, only need with the horizontal steel bar connection back of adjacent concrete wall body tip, connect through the cast-in-place section of level, in order to simplify the construction process, save engineering time and manpower, and then save the cost. However, the connection between the roof and the roof needs other means, and on the other hand, the assembled parapet disclosed by the patent cannot be provided with an overhanging cornice.
CN201810844493.5A discloses a technical scheme of an assembly parapet and a connection method thereof, which can reduce the construction period of the parapet, save the construction cost and ensure stable construction quality, the technical scheme comprises a prefabricated wall body and a plurality of connecting steel bars pre-embedded in the prefabricated wall body, the connecting steel bars are uniformly arranged along the length direction of the prefabricated wall body, one part of the connecting steel bars protrudes out of the prefabricated wall body and is used for being arranged at the bottom of the prefabricated wall body and the connecting steel bars and a building main body are poured into a whole, thereby realizing the construction of the parapet. However, the technical scheme is only connected with the roof by the overhanging reinforcing steel bars of the wall body, the pouring of the main building and the overhanging reinforcing steel bars is difficult when the parapet is arranged, the stability of the parapet is difficult to solve by the action of the overhanging reinforcing steel bars, and the wall body cannot be provided with an overhanging cornice structure.
Utility model 201720356665.5 discloses an assembled ditch structure of cornicing, this patent is fixed in this structure the lateral wall of main part building through the bolt, need set up the boss that surpasses the supporting role in advance at the lateral wall of main part building simultaneously, and obviously this structure can only be applicable to the little overhanging cornicing of escape canal class, and can't be used for the great cornicing of overhanging size.
Disclosure of Invention
The invention provides a prefabricated cornice parapet which can overcome the defects of the prior art, and an installation and construction method of a prefabricated cornice inclined roof using the prefabricated cornice parapet.
The assembled cornice parapet of the invention includes: the parapet wall is cast by concrete, the cornice is cast by concrete and connected with the parapet wall, and the structural steel bars are arranged in the parapet wall and the cornice, and at least two preformed holes which are longitudinally arranged are formed in the parapet wall part along the length direction of the parapet wall part and in which the structural column steel bars can be placed and the concrete can be cast.
Preferably, the assembled corbel table parapet of the invention is provided with beam grooves for arranging beam reinforcements and pouring concrete at the top of the parapet, and the preformed holes are communicated with the beam grooves respectively. By adopting the structure, the assembled corbel is hung on the edge beam, the beam reinforcing steel bars are arranged in the beam grooves, the vertical reinforcing steel bars of the corbel structural column arranged in the edge beam in advance are fixedly connected with the beam reinforcing steel bars, so that the whole body is formed, and the strength and the rigidity between the assembled corbel and the edge beam are improved.
Preferably, an inclined plate made of reinforced concrete is arranged between the end part of the parapet of the assembled cornice parapet and the edge of the cornice extending outwards. The inclined plate has an inclined pulling effect on the cornice, and the cornice and the parapet can be connected into a triangular integral structure, so that the prefabricated components can be conveniently transported and installed, and the condition that the components are damaged during transportation and installation is avoided.
Preferably, hanging rings are arranged at the tops of two ends of the parapet of the assembly type cornice parapet, so that the parapet is convenient to hoist during installation.
Preferably, the parapet part of the assembled cornice parapet of the invention is provided with three longitudinal preformed holes at equal intervals along the length direction. By adopting the three preformed hole structures, the wall body has better strength and rigidity after being installed, and meanwhile, the wall body can be stressed more uniformly.
More preferably, the parapet part of the fabricated cornice parapet of the present invention is provided at an upper inner side thereof with a diagonal brace bracket. The inclined pull rod bracket is arranged on the upper part of the inner side of the parapet wall and can be used for firmly connecting the parapet wall with the main building roof through the pull rod for assembly and installation.
The installation and construction method of the assembled cornice inclined roof comprises the following steps: the lower part of the vertical steel bar of the parapet structure column is arranged in the boundary beam during the roof boundary beam construction of the main structure, then the template is cast with concrete to form the boundary beam, the lower end of the vertical steel bar of the parapet structure column is fixed in the boundary beam, the upper end of the vertical steel bar is extended outwards, the assembled corbel structure column is hung on the boundary beam, the upper part of the vertical steel bar of the assembled corbel structure column is inserted into the mounting hole reserved on the assembled corbel, the steel bar in the beam groove is fixed, then the concrete is cast in the mounting hole reserved on the parapet and in the beam groove to fix the upper part of the vertical steel bar of the parapet structure column in the parapet structure column, and the parapet is fixed on the boundary beam.
Preferably, the installation and construction method of the assembled cornice inclined roof comprises the following steps: when the lower part of the vertical reinforcing steel bar of the parapet structure column is arranged in the boundary beam, the bottom end of the lower part of the vertical reinforcing steel bar of the structure column is provided with an anchoring end in the horizontal direction, after the assembled cornice parapet is hoisted, the horizontal beam reinforcing steel bar is arranged in the beam groove reserved on the upper part of the assembled cornice parapet, the top end of the vertical reinforcing steel bar of the structure column is fixedly connected with the horizontal beam reinforcing steel bar of the corresponding part, concrete is poured in the mounting hole reserved in the parapet and the beam groove to fix the upper part of the vertical reinforcing steel bar of the parapet structure column in the parapet, and the parapet is fixed on the boundary beam.
More preferably, in the installation and construction method of the assembled cornice inclined roof, the diagonal draw bar bracket is fixed on the assembled cornice parapet, and the parapet is connected with the roof of the main building by the diagonal draw bar during the assembly and construction.
The invention has the advantages that:
1) the assembled parapet with the cornice is prepared in advance by adopting a factory prefabricating method, the prefabricated cornice inclined roof structure is higher in molding quality, and the defects that the geometric dimension is not standard and the pouring difficulty is large when concrete components are poured on site are completely overcome;
2) in the construction process, a supporting scaffold and a frame body do not need to be erected in site operation, so that the number of site workers can be greatly reduced, the problems of large potential safety hazard and the like in site pouring operation are thoroughly solved, the construction efficiency is greatly improved, the engineering quality and the installation operation safety are ensured, and the installation speed is improved;
3) the invention can reduce the occupancy rate and waste of materials and improve the overall economic benefit;
4) the invention has strong practicability and high installation speed, reduces potential safety hazards and improves the construction efficiency;
5) according to the invention, the parapet wall structure column vertical reinforcing steel bars with anchoring ends are arranged in advance during roof boundary beam construction, the parapet wall structure column reinforcing steel bars are fixed on the boundary beams through cast-in-place, and then the parapet wall is fixed through the roof diagonal draw bars, so that the fixation is safer and more reliable, meanwhile, a closed'm' -shaped structure is formed through the connection of the beam reinforcing steel bars and the structure column reinforcing steel bars, the assembled parapet wall and the cornice inclined roof structure are effectively fixed, and meanwhile, the parapet wall and the cornice inclined roof structure are further firmly combined with the roof of a main building through the fixation of the diagonal draw bars, the damage of the cornice inclined roof structure caused by the whip effect under the earthquake action is avoided, and the vertical displacement and the horizontal displacement which are possibly generated can be effectively overcome.
Drawings
FIG. 1 is a schematic structural view of an assembled cornice parapet of the present invention;
FIG. 2, top view of FIG. 1;
FIG. 3 is a schematic view of a parapet structural column vertical reinforcing bar set during construction of an edge beam;
FIG. 4 is a schematic diagram of horizontal beam steel bars arranged after the assembled corbel wall is hoisted, and for clarity, only the steel bar part is shown in FIG. 4, and the concrete part of the corbel wall is not shown;
FIG. 5 is a schematic diagram of an assembled cornice parapet after installation;
fig. 6 is a schematic left-side position orthographic view of fig. 5.
The labels in the figure are: 1-structural column reinforcing steel; 2-stirrups of the structural column; 3-setting the slurry; 4-anchoring ends at the lower ends of the structural column steel bars; 5-roof reinforced concrete boundary beam of main building; 6-horizontal beam steel bars; 7-horizontal beam stirrups; 8-beam groove; 9-parapet and cornice inclined roof; 10-reinforced concrete sloping plate; 11-cornice made of reinforced concrete; 12-hoisting rings for hoisting; 13-mounting a preformed hole on the parapet wall structural column; 14-a fixing bolt; 15-diagonal brace bracket; 16-diagonal draw bar.
Detailed Description
The accompanying drawings illustrate an embodiment of the present invention and, together with the description, serve to explain the principles of the invention.
Referring to fig. 1, the assembled corbel wall of the present invention is composed of a parapet formed by structural steel bars therein and external concrete cast layers, and a corbel inclined roof 9. The lower bottom part of the parapet is mutually angle-connected with the free extending end of the cornice, and the size of the mutual connection angle is determined according to the design requirement. At the top of the parapet wall is provided a channel 8 for a cross beam, see fig. 2. Parapet part is provided with longitudinal arrangement's preformed hole 13 along its length direction, and preformed hole 13 respectively link up each other with crossbeam groove 8, and this preformed hole is used for inserting structural column reinforcing bar 1 when the installation. An inclined plate 10 made of reinforced concrete is arranged between the top of the parapet wall and the edge extending outward from the cornice. A diagonal brace bracket 15 is provided at the upper part 2/3 of the inner side of the parapet wall of the present invention. In addition, a hanging ring 12 for hoisting is arranged on the top of the parapet wall.
The installation and construction method of the assembled cornice inclined roof comprises the following steps:
firstly, determining the geometric dimension of the assembled parapet and the cornice and the structure dimension of the inclined roof according to the design requirement of a main building to form an assembled parapet and cornice BIM model, and prefabricating the assembled cornice parapet structure in a factory according to the geometric dimension and the cornice BIM model, and referring to the attached drawing 1. In the formed structure of the matched corbel wall 9, three parapet wall structure column installation preformed holes 13 are respectively reserved on the parapet wall part in advance, a beam groove 8 for arranging a beam is reserved on the top of the parapet wall in advance, and the preformed holes 13 are communicated with the beam groove 8, which is shown in the attached figure 2.
When the roof side beam 5 is processed in the main building construction, the structural column reinforcing steel bars 1 with built-in reinforcing steel bars are arranged in advance, the invention recommends to arrange the structural column reinforcing steel bars 1, the anchoring ends 4 are arranged at the bottom of the structural column reinforcing steel bars 1, and then the template is installed and C30 concrete is poured to form the side beam 5. At this time, the lower part of the structural column reinforcing steel bar 1 is anchored in the boundary beam 5, the upper part of the structural column reinforcing steel bar extends outwards, and the slurry 3 is paved on the boundary beam 5.
Hang prefabricated assembled oblique roofing 9 of cornice parapet on boundary beam 5 at the scene, with the structural column reinforcing bar 1 socket joint of overhanging part in the installation preformed hole 13 of parapet during hoist and mount assembled parapet and cornice oblique roofing structure, set up the horizontal beam reinforcing bar 6 that is fixed with crossbeam stirrup 7 on it in crossbeam groove 8, adopt simultaneously to tie up or the welding mode concreties between the top portion of reinforcing bar 1 and the mutual position of horizontal beam reinforcing bar 6, see figure 4. And then pouring micro-expansion type fine stone concrete with a high strength grade in the preformed holes and the beam grooves of the assembled parapet and the cornice inclined roof to form an m-shaped cast-in-place structure, mutually fixing the assembled parapet and the cornice inclined roof 9 and the boundary beam, and enabling each concrete column part 3 formed by pouring and the formed beam to form an m-shaped whole to play a structural locking effect. After the assembled parapet and cornice inclined roof structure 9 is inserted into the roof structure column, the diagonal draw bars 16 are respectively fixed with the diagonal draw bar brackets 15 on the wall and the roof by drawing with the fixing bolts 14.
When the invention is implemented, a groove with the diameter of 10mm is reserved between the vertical and horizontal gaps of the two adjacent assembled parapet and cornice inclined roof structures, and expansion water stop glue is injected in advance during installation and is in butt joint, extrusion and sealing; the gap between the roof side beam and the assembled cornice and the vertical structure of the inclined roof is sealed and fixed by adopting the mortar.
The invention has safe and reliable structure and high installation speed, reduces potential safety hazard and improves construction efficiency; the prefabricated oblique roofing structure that cornices shaping high quality need not set up template support scaffold, and the practicality is extremely strong.

Claims (9)

1. The installation and construction method of the assembled cornice inclined roof is characterized in that the assembled cornice parapet is prepared, the lower portion of vertical steel bars of the parapet structure column is arranged in a side beam during roof side beam construction of a main structure, then concrete is poured into a formwork to form the side beam, the lower end of the vertical steel bars of the parapet structure column is fixed in the side beam, the upper end of the vertical steel bars of the parapet structure column extends outwards, the assembled cornice parapet is hung on the side beam, the upper portion of the vertical steel bars of the parapet structure column extending outwards is inserted into a mounting hole reserved on the assembled cornice wall, concrete is poured into the mounting hole reserved on the parapet and a groove of the cross beam, so that the upper portion of the vertical steel bars of the parapet structure column is fixed in the mounting hole reserved on the parapet, and the parapet is fixed on the side beam.
2. The method for installing and constructing the assembled cornice sloping roof as claimed in claim 1, wherein when the lower part of the vertical steel bar of the parapet structural column is placed in the edge beam, the bottom end of the lower part of the vertical steel bar of the structural column is provided with an anchoring end in the horizontal direction, after the assembled cornice parapet is hoisted, a horizontal beam is arranged in a beam groove reserved at the upper part of the assembled cornice parapet, the top end of the vertical steel bar of the structural column is fixedly connected with the horizontal beam at the corresponding part, then concrete is poured in a mounting hole reserved in the parapet and the beam groove to fix the upper part of the vertical steel bar of the parapet structural column in the parapet structural column, and the parapet is fixed on the edge beam.
3. The method as claimed in claim 2, wherein the diagonal brace bracket is fixed to the parapet wall, and the parapet wall is connected to the roof of the main building by diagonal braces during the assembling and installing operation.
4. The prefabricated cornice parapet in any one of the installation and construction methods as set forth in claims 1 to 3, comprising: concrete placement's parapet and concrete placement's the cornice of being connected with the parapet to and arrange the parapet in and the interior constructional reinforcement that cornices, its characterized in that parapet part is provided with two longitudinal arrangement at least along its length direction and can puts into the preformed hole of constructional column reinforcing bar and concreting in it.
5. The assembled cornice parapet of claim 4, wherein beam grooves for arranging beam reinforcements and pouring concrete are formed in the top of the parapet, and the prepared holes are communicated with the beam grooves respectively.
6. The assembled cornice parapet of claim 5, wherein an inclined plate made of reinforced concrete is arranged between the end of the parapet and the edge of the cornice which extends outward.
7. The assembled cornice parapet of claim 6, wherein hanging rings are arranged on the tops of two ends of the parapet.
8. The assembled cornice parapet of claim 7, wherein the parapet portion is provided with three longitudinal preformed holes equally divided along a length direction thereof.
9. The assembled cornice parapet of any one of claims 4 to 8, wherein a diagonal brace bracket is arranged at an upper inner portion of the parapet.
CN202111487506.6A 2021-12-08 2021-12-08 Assembled cornice inclined roof and installation and construction method thereof Pending CN114033111A (en)

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CN202111487506.6A CN114033111A (en) 2021-12-08 2021-12-08 Assembled cornice inclined roof and installation and construction method thereof

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Application Number Priority Date Filing Date Title
CN202111487506.6A CN114033111A (en) 2021-12-08 2021-12-08 Assembled cornice inclined roof and installation and construction method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115653218A (en) * 2022-11-08 2023-01-31 中建八局第二建设有限公司 Outdoor overhanging eave assembly type construction method
CN116181101A (en) * 2022-12-16 2023-05-30 广州理工学院 Method for additionally installing eave on existing building

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06108557A (en) * 1992-09-30 1994-04-19 Okumura Corp Execution method of building rooftop parapet
CN2713047Y (en) * 2004-06-25 2005-07-27 张华� Erectable dredging water proof heat insulating integral roofing
CN205206162U (en) * 2015-11-26 2016-05-04 文登蓝岛建筑工程有限公司 Cornice structure
CN209339466U (en) * 2018-12-29 2019-09-03 陕西建工第十一建设集团有限公司 A kind of assembled parapet constructing structure
CN211775176U (en) * 2020-03-28 2020-10-27 同瀚建筑科技(杭州)有限公司 Assembled parapet
CN216664766U (en) * 2021-12-08 2022-06-03 甘肃省长城建设集团有限责任公司 Assembled parapet that cornices

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06108557A (en) * 1992-09-30 1994-04-19 Okumura Corp Execution method of building rooftop parapet
CN2713047Y (en) * 2004-06-25 2005-07-27 张华� Erectable dredging water proof heat insulating integral roofing
CN205206162U (en) * 2015-11-26 2016-05-04 文登蓝岛建筑工程有限公司 Cornice structure
CN209339466U (en) * 2018-12-29 2019-09-03 陕西建工第十一建设集团有限公司 A kind of assembled parapet constructing structure
CN211775176U (en) * 2020-03-28 2020-10-27 同瀚建筑科技(杭州)有限公司 Assembled parapet
CN216664766U (en) * 2021-12-08 2022-06-03 甘肃省长城建设集团有限责任公司 Assembled parapet that cornices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115653218A (en) * 2022-11-08 2023-01-31 中建八局第二建设有限公司 Outdoor overhanging eave assembly type construction method
CN116181101A (en) * 2022-12-16 2023-05-30 广州理工学院 Method for additionally installing eave on existing building

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