WO2009119516A1 - 床スラブ貫通構造および床スラブ貫通孔の補修方法 - Google Patents
床スラブ貫通構造および床スラブ貫通孔の補修方法 Download PDFInfo
- Publication number
- WO2009119516A1 WO2009119516A1 PCT/JP2009/055685 JP2009055685W WO2009119516A1 WO 2009119516 A1 WO2009119516 A1 WO 2009119516A1 JP 2009055685 W JP2009055685 W JP 2009055685W WO 2009119516 A1 WO2009119516 A1 WO 2009119516A1
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- WO
- WIPO (PCT)
- Prior art keywords
- floor slab
- hole
- floor
- drainage
- funnel
- Prior art date
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 9
- 230000035515 penetration Effects 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 18
- 239000004576 sand Substances 0.000 description 17
- 239000002351 wastewater Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000004567 concrete Substances 0.000 description 9
- 239000000428 dust Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/08—Down pipes; Special clamping means therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/061—Non-reusable forms
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/28—Safety or protective measures preventing damage to building parts or finishing work during construction against unfavourable weather influence
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/002—Arrangements for cleaning building facades
- E04G23/004—Arrangements for cleaning building facades with arrangements for collecting waste water or cleaning products
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/04—Roof drainage; Drainage fittings in flat roofs, balconies or the like
- E04D13/08—Down pipes; Special clamping means therefor
- E04D2013/0893—Down pipes; Special clamping means therefor incorporated in building structure
Definitions
- the present invention relates to a temporary drainage technique for draining rainwater flowing into a building under construction such as a nuclear power plant reactor building to the outside, and more particularly, a floor slab penetration structure provided in a building under construction and It is related with the repair method of the through-hole.
- concrete is placed in order from the lower floors. For example, when the concrete placement of the first floor portion is completed by hitting the slab of the ceiling portion of the first floor (the floor portion of the second floor), the second floor portion concrete is placed.
- rainwater or the like flows into the lower floors that have been placed during the work of placing the upper floors after the placement of the lower floors.
- floors that have already been placed may start interior work or installation of nuclear reactors or equipment. In this case, it is essential to avoid the inflow of rainwater.
- one of the floors that have been laid is set as the water stop floor, and the inflow of rainwater to the lower floor is blocked from the water stop floor.
- Rainwater collected on the floor slab of the still water floor is drained by a pump or the like.
- FIG. 6 is a schematic configuration diagram showing a conventional drainage facility.
- a conventional temporary drainage facility 70 is provided in a multi-storey building 1 made of reinforced concrete or steel reinforced concrete under construction.
- the multi-storey building 1 the placement of the first floor 72 and the second floor 73 is completed, and the third floor 74 is placed.
- the second floor 73 is a water stop floor, and on the floor slab 75 (first floor ceiling slab) of the second floor 73, the inflow of rainwater from the floor above the third floor 74 is stopped, and the inflow of rainwater to the first floor is prevented. It is structured.
- a concrete multi-storey building such as a reactor building has many rooms on the same floor.
- the upper floor under construction is a water-stop floor, drainage such as rainwater can be collected over a number of rooms. If it does so, in order to discharge waste_water
- an object of the present invention is to provide a floor slab penetrating structure that can discharge drainage efficiently over a long period of time and can be easily repaired with a simple structure in a concrete multi-storey building during the construction period. It is another object of the present invention to provide a method for repairing a floor slab through hole.
- the floor slab penetration structure of the present invention has a substantially cylindrical funnel portion opened on the upper surface of the floor slab of the building, and a through-hole penetrating the floor slab;
- a connecting pipe portion communicated with a bottom portion of the funnel portion of the through hole;
- a hose guide pipe portion inserted into and communicated with the lower end of the connection pipe portion; It has an inner flange portion that is in contact with the lower end portion of the hose guide tube portion and extends inward and is provided substantially flush with the lower surface of the floor slab.
- connection pipe portion communicated with the bottom portion of the funnel portion of the through hole is installed below the upper surface of the floor slab of the building.
- a substantially cylindrical funnel portion opened on the upper surface of the floor slab of the building has a through-hole penetrating the floor slab, a connecting pipe portion communicating with the bottom of the funnel portion, and the connection
- a hose guide pipe portion inserted into and communicated with the lower end of the pipe portion, and an inner flange extending inwardly provided in contact with the lower end portion of the hose guide pipe portion and substantially flush with the lower surface of the floor slab
- Providing a repair method for the through-hole in a floor slab penetration structure provided with a portion Preparing a through hole closing member inserted into the through hole and closing the through hole; Inserting the through-hole closing member into the connecting pipe provided in the through-hole, contacting the inner flange portion to close the through-hole, A repair material is poured into the floor slab through-hole from the funnel portion.
- the repair material is preferably mortar.
- the through hole closing member includes a stainless steel closing plate that contacts the inner flange portion to close the through hole.
- a hole repair method can be proposed.
- the fragmentary sectional view of the multi-story building which shows the floor slab through-hole of the temporary drainage equipment concerning the present invention.
- the partial sectional view of the multi-story building which shows the state where the collection hose was connected to the floor slab penetration hole of the temporary drainage system concerning the present invention.
- the partial sectional view of the multi-storey building which shows the state where the floor slab penetration hole of the temporary drainage system concerning the present invention was repaired.
- the schematic block diagram which shows the conventional drainage facility.
- the multi-storey building 1 under construction shown in FIG. 1 is a reinforced concrete reactor building, and is a substantially rectangular building with a side of about 100 m in plan view of the multi-storey building 1.
- the placement of the second basement floor 3, the first basement floor 4 and the first floor 5 is completed, and the second floor 6 is placed.
- the room 8 includes an electrical component room (for example, rooms 8 (8b2) and 8 (8b3) on the first basement in FIG. 1) in which electrical equipment is accommodated.
- a temporary drainage facility 11 is provided in the multi-storey building 1.
- the temporary drainage facility 11 includes a drainage collection system 13 that collects drainage in the multi-storey building 1 in the drainage pit 12, and a drainage discharge system 14 that drains the drainage collected in the drainage pit 12 to the outside of the multi-storey building 1. Composed.
- the drainage pit 12 is provided on the lowest floor of the multi-storey building 1.
- the floor slab 15 is provided with a drainage penetration structure including a floor slab through hole 16 and a drainage funnel structure including a drainage collection funnel 17 according to the characteristics of each room 8.
- the floor slab through hole 16 is provided in order to connect the room 8 on a certain floor and the room 8 on the floor below, and one end of a flexible collection hose 18 is attached to and detached from the floor slab through hole 16. Connect freely.
- the other end of the collection hose 18 is connected to a sand settling container 19 disposed on the floor slab 15 on the lower floor.
- the sedimentation container 19 once accumulates the waste water supplied from the upper floor.
- the sand settling container 19 discharges wastewater mainly composed of liquid while accumulating at the bottom a substance having a specific gravity larger than that of water such as sand and dust contained in the wastewater.
- the drainage discharged from the sand settling container 19 is discharged from a discharge hose 20 connected to the sand settling container 19 to a floor slab through hole 16 provided in the floor slab 15. Thereafter, the drainage is repeatedly carried to the lower floor and reaches the drainage pit 12.
- the floor slab penetration structure in the drainage collection system 13 has, for example, a through hole 16 (16a1) formed in a floor slab 15 that communicates a room on the second floor 6 under construction and a room 8 (8a1) on the first floor 5 that has been placed.
- the collection hose 18 (18a1) connected to the floor slab through hole 16 (16a1) is connected to a sand settling container 19 (19a1) disposed on the floor slab 15 (15a1) of the room 8 (8a1) on the first floor 5.
- the discharge hose 20 (20a1) of the sand settling container 19 (19a1) is connected to a floor slab through hole 16 (16b1) provided in the floor slab 15 (15a1). Thereafter, the drainage is repeatedly carried downstairs to the drainage pit 12.
- a drainage collection funnel structure can be adopted.
- a drainage collection funnel having a drainage collection funnel 17 (17a2) is provided in a ceiling floor slab 15 (15a2) of a room 8 (8b2) in which electrical equipment and the like formed on the first basement floor 4 of the building in FIG. A structure is provided, and the drainage collection funnel 17 (17a2) is connected to a drainage collection riser pipe 22 embedded in the side wall 21 of the floor slab 15 (15a2) and the room 8 (8b2).
- the drainage collecting riser pipe 22 is connected to the inter-pit communication pipe 23 on the side wall on the lowest floor.
- Drain pits 12 are arranged at almost the four corners of the basement 2nd floor 3 which is the lowest floor.
- the drainage pit 12 is provided so that the water surface height of the upper limit water storage amount is lower than the floor position of the second basement floor 3 which is the lowest floor.
- the drainage pits 12 are communicated with each other through the inter-pit connecting pipe 23, and the water storage amount of each drainage pit 12 is kept substantially equal.
- the drain pit 12 is provided with a first drain pump 25 with a small output and a second drain pump 26 with a large output as the drain discharge system 14.
- the first drain pump 25 and the second drain pump 26 are connected to the drain discharge pipe 32 via check valves 28 and 29 and gate valves 30 and 31, respectively.
- the drainage discharge pipe 32 is connected to the sedimentation tank via the gate valve 33.
- first drain pump 25 and the second drain pump 26 are provided, but any one drain pump may be provided.
- FIG. 2 is a partial cross-sectional view of a multi-storey building showing a floor slab penetration structure of a temporary drainage facility according to the present invention.
- a floor slab through hole 16 is provided in the floor slab 15 of the multi-storey building 1 under construction.
- the floor slab through-hole 16 is provided through the floor slab 15 at the same time as the concrete is cast to form the floor slab 15.
- the floor slab through hole 16 includes a substantially cylindrical funnel portion 36 opened on the floor surface of the room 8.
- a connecting pipe part 37 is inserted into the bottom of the funnel part 36, a hose guide pipe part 38 is inserted into and communicated with the lower end of the connecting pipe part 37, and a lower floor 38a of the hose guide pipe part 38 is connected to the lower floor 38a.
- An inner flange portion 40 provided substantially flush with the ceiling surface and extending inward is provided.
- One end (upper end) of the connecting pipe part 37 protrudes upward from the bottom part 36a of the funnel part 36, and the lower end is appropriately embedded in the floor slab 15. However, the upper end edge of the connecting pipe part 37 does not pass through the through-hole 16 and protrude upward from the floor slab 15.
- the outer diameter of the hose guide pipe part 38 is slightly smaller than the inner diameter of the connection pipe part 37, and the upper end part 38 b of the hose guide pipe part 38 is appropriately inserted into the lower end part 37 a of the connection pipe part 37. Accordingly, a stepped portion 41 is formed inside the connecting pipe portion 37 by the upper end portion 38 b of the hose guide pipe portion 38. Further, a stepped portion 42 is formed at the lower end portion 38 a of the hose guide pipe portion 38 by the inner flange portion 40.
- At least the inner flange portion 40 is formed using stainless steel.
- the funnel portion 36 is desirably cylindrical, and the diameter of the opening of the through hole is preferably about 200 mm. However, it is not necessary to be particular about this and can be appropriately determined as necessary.
- FIG. 3 is a partial cross-sectional view of a multi-storey building showing a state where a collection hose is connected to a floor slab through hole of a temporary drainage facility according to the present invention.
- a collection hose 18 is connected to the floor slab through-hole 16 provided in the floor slab 15 of the multi-storey building 1 under construction.
- the hose connector part 46 which has the collar part 45 is provided in the edge part (upper end part in FIG. 3) of the collection hose 18. As shown in FIG.
- the collection hose 18 is held by bringing the flange portion 45 of the hose connector portion 46 into contact with the step portion 41 of the floor slab through-hole 16 via the seal ring 47.
- the eye plate 49 is disposed above the hose connector portion 46.
- FIG. 4 is a cross-sectional view of a sand settling container of a temporary drainage facility according to the present invention.
- the sand settling container 19 of the temporary drainage facility 11 has an inflow pipe portion 50 to which the other end portion (the lower end portion in FIG. 3) of the collection hose 18 is connected, and drainage flowing from the inflow pipe portion 50 temporarily. And a discharge pipe portion 53 provided on the side wall portion 52 of the container portion 51 and connected to the discharge hose 20.
- the temporary drainage facility 11 when rain falls on the multi-storey building 1, first, rainwater pours onto the floor slab 15a of the second floor 6 under construction. Rainwater that has poured onto the floor slab 15 on the second floor 6 flows into the floor slab through-hole 16a as drainage containing sand and dust. The wastewater that has flowed into the floor slab through hole 16a is temporarily accumulated in the sand settling container 19a through the collection hose 18a. In the sand settling container 19a, an object having a specific gravity larger than that of water such as sand or dust contained in the drainage sinks and accumulates at the bottom of the sand settling container 19a.
- the waste having a specific gravity greater than that of water such as sand and dust is removed, and the waste water mainly composed of liquid is discharged from the sand settling container 19a and is provided in the floor slab 15a1 (15a2) from the discharge hose 20a. Or it flows into the waste water collection funnel 17.
- the drainage flowing into the floor slab through hole 16b is repeatedly carried downstairs to reach the drainage pit 12.
- the waste water that has flowed into the waste water collection funnel 17 is conveyed downstairs from the waste water collection riser pipe 22 and flows into the inter-pit connecting pipe 23 to reach the drain pit 12.
- FIG. 5 is a partial cross-sectional view of a multi-storey building showing a state where the floor slab through hole of the temporary drainage facility according to the present invention is closed.
- the floor slab through-hole 16 provided in the floor slab 15 of the multi-storey building 1 under construction is closed when there is no risk of inflow of rainwater or the like.
- the diameter of the closing plate 59 is formed smaller than the inner diameter of the hose guide tube portion 38 and larger than the flange inner diameter of the inner flange portion 40.
- mortar 61 is poured from the funnel portion 36 into the floor slab through hole 16.
- the mortar 61 poured into the floor slab through hole 16 is blocked by the closing plate 59 and fills the floor slab through hole 16 without leaking to the lower floor.
- the floor slab through hole 16 is closed.
- the through hole closing member 60 can be easily inserted from the floor surface corresponding to the upper surface of the floor slab 15 to repair and backfill the floor slab through hole 16. Further, since the inner flange portion 40 and the closing plate 59 formed of stainless steel are exposed on the ceiling surface of the lower floor corresponding to the lower surface of the floor slab 15, there is no need for curing such as rust prevention. Therefore, particularly in a multi-storey building 1 in which defects such as cracks are not allowed on the floor, wall surface and ceiling surface, such as a reactor building, a floor slab caused by rust of a metal material around the floor slab through-hole 16. The occurrence of 15 defects can be avoided.
- the drainage can be efficiently discharged over a long period of time and easily repaired in the multi-storey building 1 under construction with a simple configuration.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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Abstract
Description
従って、本発明の目的は、建設期間中のコンクリート製の複数階建造物において、簡易な構成で、長期間に亘り、効率的に排水を排出可能であり、かつ容易に補修できる床スラブ貫通構造およびその床スラブ貫通孔の補修方法を提供することにある。
前記貫通孔のファンネル部の底部に連通された接続管部と、
前記接続管部の下端に挿入されて連通されたホースガイド管部と、
前記ホースガイド管部の下端部に当接され前記床スラブの下面と略面一に設けられた内方に延出する内フランジ部とを備えたことを特徴とする。
前記貫通孔に挿入され貫通孔を閉止す貫通孔閉止部材を準備し、
前記貫通孔閉止部材を貫通孔内に設けた前記接続管に挿入して前記内フランジ部に当接させて貫通孔を閉止し、
前記ファンネル部から前記床スラブ貫通孔に補修材を注ぎ込ことを特徴とする。
Claims (6)
- 建物の床スラブの上面に開口された略円筒状のファンネル部を有し、床スラブを貫通する貫通孔と、
前記貫通孔のファンネル部の底部に連通された接続管部と、
前記接続管部の下端に挿入されて連通されたホースガイド管部と、
前記ホースガイド管部の下端部に当接され前記床スラブの下面と略面一に設けられた内方に延出する内フランジ部とを備えたことを特徴とする床スラブ貫通構造。 - 前記貫通孔のファンネル部の底部に連通された接続管部の挿通上端部は建物の床スラブの上面より下に位置することを特徴とする請求項1記載の床スラブ貫通構造。
- 前記内フランジ部はステンレス鋼で形成されていることを特徴とする請求項1記載の床スラブ貫通構造。
- 建物の床スラブの上面に開口された略円筒状のファンネル部を有し、床スラブを貫通する貫通孔と、前記ファンネル部の底部に連通された接続管部と、前記接続管部の下端に挿入されて連通されたホースガイド管部と、前記ホースガイド管部の下端部に当接され前記床スラブの下面と略面一に設けられた内方に延出する内フランジ部とを備えた床スラブ貫通構造における前記貫通孔の補修方法において、
前記貫通孔に挿入され貫通孔を閉止す貫通孔閉止部材を準備し、
前記貫通孔閉止部材を貫通孔内に設けた前記接続管に挿入して前記内フランジ部に当接させて貫通孔を閉止し、
前記ファンネル部から前記床スラブ貫通孔に補修材を注ぎ込ことを特徴とする床スラブ貫通孔の補修方法。 - 前記補修材はモルタルであることを特徴とする請求項4に記載の床スラブ貫通孔の補修方法。
- 前記貫通孔閉止部材は前記内フランジ部に当接させて貫通孔を閉止するステンレス製の閉止板を備えていることを特徴とする請求項4に記載の床スラブ貫通孔の補修方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/934,768 US8230653B2 (en) | 2008-03-26 | 2009-03-23 | Floor slab penetration structure and floor slab penetration hole repair method |
KR1020107021889A KR101227606B1 (ko) | 2008-03-26 | 2009-03-23 | 바닥 슬래브 관통 구조 및 바닥 슬래브 관통 구멍의 보수 방법 |
EP09725588.9A EP2267245A4 (en) | 2008-03-26 | 2009-03-23 | FLOOR PLATE FORMING STRUCTURE AND METHOD FOR REPAIRING A FLOOR PLATE PUNCH HOLE |
JP2010505636A JP5172948B2 (ja) | 2008-03-26 | 2009-03-23 | 床スラブ貫通構造および床スラブ貫通孔の補修方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2008081161 | 2008-03-26 | ||
JP2008-081161 | 2008-03-26 |
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WO2009119516A1 true WO2009119516A1 (ja) | 2009-10-01 |
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PCT/JP2009/055685 WO2009119516A1 (ja) | 2008-03-26 | 2009-03-23 | 床スラブ貫通構造および床スラブ貫通孔の補修方法 |
Country Status (5)
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US (1) | US8230653B2 (ja) |
EP (1) | EP2267245A4 (ja) |
JP (1) | JP5172948B2 (ja) |
KR (1) | KR101227606B1 (ja) |
WO (1) | WO2009119516A1 (ja) |
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WO2009119516A1 (ja) * | 2008-03-26 | 2009-10-01 | 東芝プラントシステム株式会社 | 床スラブ貫通構造および床スラブ貫通孔の補修方法 |
JP5172949B2 (ja) * | 2008-03-28 | 2013-03-27 | 東芝プラントシステム株式会社 | 仮設排水設備および仮設排水方法 |
US9909330B2 (en) | 2012-05-22 | 2018-03-06 | Gerald R. Gray | Method and apparatus to fill and fire proof holes in concrete floors |
US8959863B2 (en) | 2012-05-22 | 2015-02-24 | Gerald R. Gray | Method and apparatus to fill and fire proof holes in concrete floors of commercial buildings utilizing a precast plug |
US9765541B2 (en) | 2012-05-22 | 2017-09-19 | Gerald R. Gray | Method and apparatus to fill and fire proof holes in concrete floors |
CN104846978B (zh) * | 2015-05-26 | 2016-09-28 | 江苏南通二建集团有限公司 | 现浇住宅排水系统准工厂化施工方法 |
US10961732B2 (en) | 2018-11-23 | 2021-03-30 | Mark Barmettler | Concrete penetration patch kit and method |
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- 2009-03-23 US US12/934,768 patent/US8230653B2/en active Active
- 2009-03-23 JP JP2010505636A patent/JP5172948B2/ja active Active
- 2009-03-23 EP EP09725588.9A patent/EP2267245A4/en not_active Withdrawn
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CN110468728A (zh) * | 2019-09-06 | 2019-11-19 | 中铁第四勘察设计院集团有限公司 | 一种节段预制拼装梁吊装孔封堵结构及其施工方法 |
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KR101227606B1 (ko) | 2013-01-29 |
JPWO2009119516A1 (ja) | 2011-07-21 |
US20110023395A1 (en) | 2011-02-03 |
EP2267245A4 (en) | 2013-05-15 |
KR20100128316A (ko) | 2010-12-07 |
US8230653B2 (en) | 2012-07-31 |
EP2267245A1 (en) | 2010-12-29 |
JP5172948B2 (ja) | 2013-03-27 |
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