KR20170060347A - Precasting pfp block assembly and grating structure being applied thereof - Google Patents

Precasting pfp block assembly and grating structure being applied thereof Download PDF

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Publication number
KR20170060347A
KR20170060347A KR1020150164711A KR20150164711A KR20170060347A KR 20170060347 A KR20170060347 A KR 20170060347A KR 1020150164711 A KR1020150164711 A KR 1020150164711A KR 20150164711 A KR20150164711 A KR 20150164711A KR 20170060347 A KR20170060347 A KR 20170060347A
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KR
South Korea
Prior art keywords
pfp
block
lattice
support beam
grating structure
Prior art date
Application number
KR1020150164711A
Other languages
Korean (ko)
Inventor
신동수
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020150164711A priority Critical patent/KR20170060347A/en
Publication of KR20170060347A publication Critical patent/KR20170060347A/en

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/10—Fire-proof curtains
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B13/00—Conduits for emptying or ballasting; Self-bailing equipment; Scuppers
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/06—Gully gratings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/42—Gratings; Grid-like panels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S1/00—Sheets, panels, or other members of similar proportions; Constructions comprising assemblies of such members
    • F16S1/14—Assemblies of such members with members of forms covered by group F16S3/00 or F16S5/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
    • F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
    • F16S3/06—Assemblies of elongated members
    • F16S3/08—Assemblies of elongated members forming frameworks, e.g. gratings

Abstract

The present invention relates to a pre-cast PFP block assembly in which a PFP coating material is cast in advance in a factory to form a PFP block, and the formed blocks are inserted into a grating support beam so as to be freely separable to form a refractory coating film, To a grating structure.
The grating structure refractory to the precast PFP block assembly according to the present invention comprises a support beam 10; A grating structure (30) provided on an upper surface of the support beam (10); Casting a PFP coating material into a block shape of a unit piece in accordance with the shape of the lattice space at a factory in advance in the lattice spaces formed by the lattice plates 32 of the lattice structure 30, And the upper surface of the support beam 10 is subjected to refractory processing.

Description

[0001] PRECASTING PFP BLOCK ASSEMBLY AND GRATING STRUCTURE BEING APPLIED THEREOF [0002]

The present invention relates to a grating structure, and more particularly, to a grating structure, in particular, a pre-cast PFP block in which a PFP block is made by casting a PFP coating material in advance in a factory, and the blocks thus formed are inserted into a grating support beam, Assembly and a grating structure refractory thereto.

In general, the general paint coating alone can easily reveal the life span of a structure exposed to marine environments or harsh conditions onshore. Therefore, in order to prevent the corrosion of the structure and ensure the life of the structure, special surface treatment is applied to the main parts exposed to heat or seawater as well as general paint coating.

The passive fire protection (PFP) application during the surface treatment is to spray or adhere a PFP coating agent, which is generally made of an expandable epoxy, on the surface of the structure to delay or prevent the sudden drop in strength and collapse of the structure due to heat when a fire occurs, In order to secure the evacuation time and to delay the spread of the fire, it is a construction to form a refractory coating by spraying a PFP coating on the surface of a steel structure in a position where it is exposed to a fire or a high temperature.

For example, a floating production storage and handling facility (FPSO), which has a complex function of producing, storing and unloading ships, a marine platform for drilling crude oil, a drill ship, or crude oil or natural gas, Offloading, LNG-FPSO (or FLNG) and the like typically have a substructure for providing buoyancy for floating on the sea or providing a crude oil storage space, a main deck exposed above the sea as an upper part of the substructure, And a floor structure supported by a supporter above the upper deck structure to provide various work bases or facility installation bases.

The PFP coating applied to the offshore structure swells when the fire touches, protects the structure from fire for a certain period of time, and prevents the generation of toxic gas caused by the burning of the structure, thereby giving the crew time to evacuate.

In such an offshore structure, the platform is a structure that provides floor space for maintenance, while providing a passage through which workers, cars, vehicles, and the like can travel. In the section that serves as ventilation or ventilation, And a grating section having a space is designed.

The grating structure includes a grating formed by regularly or irregularly forming a lattice-shaped space (hereinafter referred to as a " lattice space ") across the plate members, and a support beam supporting the grating.

The PFP construction of such a grating structure typically sprays a PFP coating on the surface of the support beam to form a refractory coating layer.

Conventionally, the PFP construction in the grating section is made in the form shown in Figs. 1 to 3.

The PFP construction of the prior art grating structure shown in Figure 1 is similar to the PFP construction of the prior art grating structure shown in Figure 1 except that the upper surface 12a of the support beam 10, which is comprised of an H-shaped or the like having an upper flange 12, an abdominal plate 14 and a lower flange 16, And a lattice structure 30 is placed on the upper surface of the upper flange 12. The PFP coating 20 is formed on the upper surface of the upper flange 12,

Since the PFP construction shown in FIG. 1 does not apply the PFP to the upper surface 12a of the support beam 10, it is difficult to apply such a section to the design of a structure installed in a region where fire risk is high. . In addition, even if construction is carried out in an area where the risk is low, it is difficult to cope with a case where a problem is raised in the future.

2, a grid structure 30 is placed on an upper surface of a support beam 10, and a PFP coating agent 20a is directly injected into a grid space formed by intersecting plates of the grid structure 30 (See Patent Documents 1 and 2).

In the PFP construction shown in Fig. 2, since the PFP coating agent 20a is attached to and attached to the lattice structure 30, the PFP coating agent 20a easily cracks due to vibration or elastic deformation accompanying the lattice structure 30 Lt; / RTI > Further, there is a problem that the grating structure 30 must be pulled out even when the damaged grating is replaced, or the PFP coating agent 20a must be broken and removed from the grating structure 30, and then reworked.

The PFP construction shown in FIG. 3 is such that a support plate 40 is provided on both sides of the upper flange 12 of the support beam 10 so as to protrude upward, a PFP coating film 20b is formed between the support plates 40, And a lattice structure 30 is placed thereon and fixed.

In the PFP construction shown in Fig. 3, since the load acting from the grid structure 30 is uniformly distributed on the upper surface of the support beam 10, and the support plate 40 is locally received, the structural rigidity of the entire structure There is a problem that a complicated problem arises in the structural stiffness analysis and design such as the need to be supplemented and additional measures must be taken in the design.

In addition, since both support plates 40 are attached to both sides of the upper flange 12 of the support beam 10 by welding or the like, the construction is complicated and inconvenient.

Korean Patent Laid-Open Publication No. 10-2015-0020834 Korean Patent Laid-Open Publication No. 10-2013-0042815 Korean Patent Laid-Open Publication No. 10-2012-0132948 Korean Patent Laid-Open Publication No. 10-2015-0000188 Korean Patent Laid-Open Publication No. 10-2015-0020819 Korean Registered Patent Publication No. 10-1270529

SUMMARY OF THE INVENTION It is an object of the present invention to provide a pre-cast PFP block assembly that can be easily installed and replaced without unduly weakening the structural rigidity of the grating structure, To provide a grating structure.

It is an object of the present invention to provide a PFP coating material comprising a unitary piece of PFP coating material 110 made of an expandable epoxy and a PFP block 110 having one side of the unit piece attached to an adhesive sheet 120, Block assembly.

In the PFP block assembly according to the present invention, the PFP block 110 may be formed by injecting a liquid PFP coating material into a mold having a block-shaped cavity and solidifying the molded body.

In the PFP block assembly according to the present invention, the adhesive sheet 120 may be formed of a sheet having a plastic sheet or a metal sheet coated with an adhesive on one surface thereof.

The grating structure refractory to the precast PFP block assembly according to the present invention comprises a support beam 10; A grating structure (30) provided on an upper surface of the support beam (10); Casting a PFP coating material into a block shape of a unit piece in accordance with the shape of the lattice space at a factory in advance in the lattice spaces formed by the lattice plates 32 of the lattice structure 30, And the upper surface of the support beam 10 is subjected to refractory processing.

In the pre-casting PFP block 110 according to the present invention, the pre-casting PFP block 110 is formed by laminating a liquid PFP coating material on a mold having a cavity along the shape of the lattice space of the lattice structure 30 It is cast by injection of raw material.

The pre-casting PFP block assembly according to the present invention can be refractorily processed to have a structure in which an adhesive sheet 120 is attached to the upper surface of pre-cast PFP blocks 110 sandwiched between the grid structures 30.

In the grating structure of the pre-cast PFP block assembly according to the present invention, the adhesive sheet 120 may be formed of a plastic sheet or a sheet coated with an adhesive on one surface of a metal sheet.

According to the grating structure that is refractory processed by the pre-casting PFP block according to the present invention, since the pre-cast PFP block preliminarily manufactured in the process is sandwiched in the lattice space of the lattice structure, the construction is very easy, The function as the

In addition, according to the grating structure in which the PFP block previously formed in the lattice space is assembled with the grating structure as described above, it is possible to easily replace the aged PFP block simply by removing it from the lattice space.

Further, since the grating structure is mounted on and supported by the upper flange of the support beam, the entire structure of the grating structure does not change or weaken the structural rigidity of the grating structure. Therefore, the refractory coating film of the grating structure can be installed very simply without changing the structure of the lattice structure or the support beam, without changing the structural rigidity, or moving the support means or the like.

1 is a cross-sectional view illustrating one form of PFP construction in a conventional grating section.
2 is a cross-sectional view showing another form of PFP construction in a conventional grating section.
3 is a cross-sectional view showing another form of PFP construction in a conventional grating section.
4 is a view for explaining a PFP block assembly according to the present invention.
5 is a perspective view of a PFP block assembly in accordance with the present invention.
6 is a view showing an example of a casting method of the PFP block according to the present invention.
7 is a view for explaining the assembling situation of the PFP block assembly and the grating structure according to the present invention.
8 is a view for explaining the assembling situation of the PFP block assembly and the grating structure according to the present invention.
9 is a view showing another assembly example of the PFP block assembly and the grating structure according to the present invention.

Hereinafter, an embodiment of a grating structure refractory to a precast PFP block according to the present invention will be described in detail with reference to the accompanying drawings.

4 and 5 are views illustrating a pre-cast PFP block assembly according to the present invention.

4 and 5, the pre-casting PFP block assembly 100 according to the present invention includes a PFP block 110 and an adhesive sheet 120.

The PFP block 110 is formed of a block of unit pieces of the PFP coating material composed of an expandable epoxy and the adhesive sheet 120 can be assembled or detached from the structure by attaching a plurality of PFP blocks 110 manufactured at one time .

As described above, the PFP block assembly 100 can be manufactured by providing the PFP block 110 using the PFP coating material in advance at the factory so as to provide the PFP block 110 with the block shape And the PFP blocks 110 are assembled by assembling the PFP blocks 110 to form a refractory coating film.

In the grating structure, the PFP block 110 made as described above can be inserted into the grating support beam in a state of being freely detachable to form a refractory coating film.

The PFP block 110 is formed of a block of unit pieces of various types according to the shape of the grating structure, and is formed by cutting a hardened mass into a predetermined shape or casting it into a predetermined shape through a mold, .

The adhesive sheet 120 is formed by applying an adhesive to one surface of a plastic sheet or a metal sheet. Preferably, the plastic sheet is a non-flammable or flame retardant sheet, and may also be a cellophane, as the case may be.

The adhesive sheet 120 is aligned with the shape of the grating structure in such a manner that one side of the PFP block 110 is adhered to the adhesive sheet 120. Alternatively, the PFP blocks 110 may be first assembled to the grating structure, and then the adhesive sheet 120 may be attached to the surface of the PFP blocks 110 It may be covered and attached. The adhesive sheet 120 serves to fix a plurality of PFP blocks 110 at a time, but serves as a bottom plate after the installation.

In addition, it is preferable that the PFP block 110 is manufactured by a casting method using a mold (mold) in terms of ease of manufacture and convenience.

Fig. 6 is a view showing an example of a casting method of the PFP block 110. Fig.

FIG. 6 shows an example in which the mold 300 is composed of a lower mold 310 and an upper mold 320. However, this is a simple example, and the shape of the mold 300 is not limited to any one form, such as the one shown in Fig. 6, and may be varied depending on the situation of the industrial field, the size of the PFP block 110, .

6, the lower mold 310 has a cavity 312 formed in a shape suitable for the shape of the grating space of the grating structure. When the liquid PFP coating material is injected into the cavity 312 and hardened, the PFP block 110 is formed.

6, the upper mold 320 may be provided with an injection port 322 for injecting the PFP coating material into the cavity 312 and a cavity 324 for venting air in the cavity 312.

6, the protrusion 112 corresponding to the injection port 322 and the protrusion 112 corresponding to the open vent hole 324 are formed on one surface of the cavity 312, (114) is left. When the projections 112 and 114 are cut, the casting of the PFP block 110 is completed.

The completed PFP block 110 is taken to the construction site and assembled.

Next, FIGS. 7 and 8 are views for explaining an assembling situation of forming a refractory coating film of the grating structure using the PFP block assembly 100, wherein FIG. 7 is an exploded perspective view, and FIG. A perspective view of the completed state is shown.

Referring to FIG. 7, the grating structure is formed by supporting the grating structure 30 with the support beam 10. This may be the grating section of the platform structure of the ship or offshore structure.

The support beam 10 is a beam for supporting the lattice structure 30. The lower surface of the lattice structure 30 is seated on the upper surface of the upper flange 12 of the support beam 10,

The pre-casting grid structure 30 is formed by intersecting a plurality of grid plates 32, and a lattice space is formed between the intersecting grid plates 32. The lattice space has various shapes depending on the grating structure, such as a square, a circle, a polygon, and a special shape such as a star. The PFP block 110 is manufactured in advance by a method of casting to fit the shape of the lattice space.

As shown in Fig. 7, the pre-cast PFP blocks 110 can be prepared by attaching one surface of the pre-cast PFP blocks 110 to the adhesive sheet 120 in conformity with the shape of the lattice space. Otherwise, the pre-cast PFP block 110 and the adhesive sheet 120 may be prepared separately to attach the adhesive sheet 120 before or after assembling the PFP block 110 to the lattice structure 30. [

The pre-cast PFP block 110 is assembled in such a manner that it simply inserts into the lattice space formed by the lattice plates 32 of the lattice structure 30. [

The pre-casting PFP blocks 110 sandwiched in the lattice space are simply assembled by placing their lower surfaces in close contact with the upper surface 12a of the upper flange 12 of the support beam 10. [

That is, the construction is completed simply by sandwiching the PFP block 110 made in advance in the lattice space instead of applying the PFP coating material by spraying as in the conventional art. The pre-cast PFP block 110 sandwiched in the lattice space covers the upper surface 12a of the upper flange 12 of the support beam 10 to serve as a refractory coating.

In this case, the adhesive sheet 120 fixes the PFP block 110 to prevent the PFP block 110 from flowing, and acts as a bottom plate that can be stepped on by the operator.

In the present invention, since the pre-cast PFP block 110 is sandwiched in the lattice space, a slight gap is formed between the side of the pre-cast PFP block 110 and the lattice plate 32. However, when a fire occurs and is exposed to a flame, the PFP block 110 receives heat due to inherent excitation characteristics and expands, thereby filling a gap with the grid plate 32. [ Therefore, it is very easy to assemble, and the function as a refractory coating is excellent.

In addition, according to the grating structure in which the PFP block 110 made in advance in the lattice space is sandwiched between the grating structures, it is possible to easily replace the aged PFP block 110 simply by extracting the aged PFP block 110 from the lattice space.

The grating structure 30 has its entire surface seated and supported on the upper flange 12 of the support beam 10 so that the structural rigidity of the grating structure is not altered or weakened.

Therefore, the refractory coating film of the grating structure can be constructed very simply without changing the structure of the grating structure 30 or the support beam 10, without changing the structural rigidity, and without any additional support means or the like.

7 and 8, the surface of the remaining portion of the upper flange 12 excluding the upper surface 12a is naturally coated with the PFP coating film 20 as shown in Figs.

Next, Fig. 9 is a view showing another example of a grating structure according to the present invention. 7 and 8 show that the lattice space of the lattice structure 30 is elongated in the transverse direction of the support beam 10 while Fig. 9 shows that the lattice space is formed in several lattice spaces Is present.

9 and 9, a pre-cast PFP block 110 is inserted in each lattice space formed by the lattice plates 32 of the lattice structure 30, and the pre-cast PFP block 110 is formed on the upper surface of the PFP block 110 The adhesive sheet 120 is attached and fixed.

Therefore, the upper surface 12a of the upper flange 12 of the support beam 10 is refractory processed by the pre-casting PFP blocks 110. [ The PFP coating 20 is formed by spraying the PFP coating on the surfaces of the abdomen plate 14 and the lower flange 16 from the remaining portion of the support beam 10, that is, the lower surface of the upper flange 12.

The foregoing is a description of certain preferred embodiments of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein, but may be modified and altered without departing from the spirit and scope of the invention as defined in the appended claims.

10: Support beam
12: Upper flange
12a: upper surface
30: lattice structure
32: Grating
100: PFP block assembly
110: PFP block
120: Adhesive sheet

Claims (7)

Wherein a PFP coating material comprising an expandable epoxy is made into a unit piece of PFP block 110 and one side of the PFP block 110 of the unit piece is attached to the adhesive sheet 120 and aligned. The method according to claim 1,
Wherein the PFP block (110) is formed by injecting a liquid PFP coating material into a mold having a block-shaped cavity to harden the mold. The method according to claim 1,
Wherein the adhesive sheet (120) is made of a sheet on which an adhesive is applied to one side of a plastic sheet or a metal sheet. A support beam 10; And
A grating structure (30) provided on an upper surface of the support beam (10); / RTI >
In the grid spaces formed by the lattice plates 32 of the lattice structure 30, pre-cast PFP blocks 110 in which the raw material of the PFP coating material is formed into a block shape of unit pieces are fitted in advance in the factory in accordance with the shape of the lattice space Wherein the upper surface of the support beam (10) is refractory. ≪ RTI ID = 0.0 > 8. < / RTI > 5. The method of claim 4,
The pre-casting PFP block 110,
Wherein the preform casting is performed by injecting a liquid PFP coating material into a mold having a cavity along a shape of a lattice space of the lattice structure. 5. The method of claim 4,
Wherein the adhesive sheet 120 is attached to an upper surface of the pre-casting PFP blocks 110 sandwiched between the grid structures 30. The method according to claim 6,
Characterized in that the adhesive sheet (120) is made of a sheet in which an adhesive is applied to one side of a plastic sheet or a metal sheet, and the pre-casting PFP block assembly is refractory.
KR1020150164711A 2015-11-24 2015-11-24 Precasting pfp block assembly and grating structure being applied thereof KR20170060347A (en)

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Application Number Priority Date Filing Date Title
KR1020150164711A KR20170060347A (en) 2015-11-24 2015-11-24 Precasting pfp block assembly and grating structure being applied thereof

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Application Number Priority Date Filing Date Title
KR1020150164711A KR20170060347A (en) 2015-11-24 2015-11-24 Precasting pfp block assembly and grating structure being applied thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190000081U (en) * 2018-09-17 2019-01-08 삼성중공업 주식회사 Passive Fire Protection Block
KR20210089446A (en) * 2020-01-08 2021-07-16 이용운 manhole grating fasten device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190000081U (en) * 2018-09-17 2019-01-08 삼성중공업 주식회사 Passive Fire Protection Block
KR20210089446A (en) * 2020-01-08 2021-07-16 이용운 manhole grating fasten device

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