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1. 发明专利

JP2001280538A METHOD OF INSERTING NEW PIPE IN WORN-OUT EXISTING PIPE 失效
公开(公告)号：JP2001280538A
公开(公告)日：2001-10-10
申请号：JP2000091122
申请日：2000-03-29
申请人： NIPPON STEEL CORP
发明人： TAKABAYASHI TSUTOMU , MOCHIZUKI TAKASHI , SAKAMOTO TAKASHI , OKAMURA AKIRA , IWAMOTO ATSUSHI
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a renewal method of a worn out existing pipe excellent in capability for work execution, by using a flexible pipe. SOLUTION: This renewal method of a worn-out existing pipe, inserting a new construction pipe smaller in diameter than the worn-out existing pipe, is characterized by using a flexible pipe 2 as the new construction pipe, filling between the flexible pipe 2 and the worn-out existing pipe 1 with a liquid 3, and inserting the flexible pipe 2 from one end of the worn-out existing pipe 1 by a flow of the liquid 3.

2. 发明专利

JP2000092675A METHOD FOR PROTECTING A LONG BODY INSTALLED ON BOTTOM SURFACE OF WATER 失效
公开(公告)号：JP2000092675A
公开(公告)日：2000-03-31
申请号：JP25770698
申请日：1998-09-11
申请人： NIPPON STEEL CORP
发明人： OTA HIDEMI , OKAMURA AKIRA , HAGIWARA MASAHIRO
IPC分类号： H02G9/02 , F16L1/14
摘要： PROBLEM TO BE SOLVED: To enable protection of long body against an external force by the anchoring of ship, tide and waves or the like by fitting bags to the long body on the water surface or on the ship, installing the long body at the bottom surface of water, and thereafter widening the bags to cover the long body by releasing the fitting to fill the inside of bags with a filler. SOLUTION: On the water surface at the outside of a cable laying ship, the folded bag 1 is fitted with a ring type fitting tool 4 to a long body 3 to be installed at the water bottom 2, and the long body 3 is installed at the bottom 2. Thereafter, fitting is released to widen the bag 1 to cover the long body 3 and the inside of each bag 1 is filled with a filler 5. After the filler 5 such as cement milk or mortar or the like is hardened, the long-length body 3 is protected from an external force such as anchoring of ship, tide and waves and such bag works as a weight to prevent movement of long-length body 3. Moreover, when the bottom 2 is projected or recessed, the lower bag provided at the gap between the bottom surface 2 and long body is flexible, the filler 5 is hardened filling the gap through free deformation and thereby the long body 3 is equally supported without generation of concentrated load.

3. 发明专利

JPH11334685A LARGE MARINE STRUCTURE HAVING LIGHTING PORTION 失效
公开(公告)号：JPH11334685A
公开(公告)日：1999-12-07
申请号：JP14247698
申请日：1998-05-25
申请人： NIPPON STEEL CORP
发明人： HAYASHI NOBUYUKI , OKAMURA AKIRA , HAGIWARA MASAHIRO
IPC分类号： E02B3/06 , B63B35/00
摘要： PROBLEM TO BE SOLVED: To provide a large marine structure having lighting portions for protecting the marine ecosystem allowing the use of substantially the whole area of the top surface of the marine structure using a quite simple structure and requiring no drive. SOLUTION: A plurality of lighting portions 10 are formed in a main body 2 of a large marine structure 1 provided on the sea, through which the sun light 16 is directly irradiated into the sea under the main body 2. Each of the lighting portions 10 is obtained by placing a transparent rectangular or circular upper plate on the place having the same height as that of the upper surface of the main body 2 of the large marine structure 1 and further supporting the transparent plates using a supporting member fixed to the main body 2. This structure 1 is also provided with transparent rectangular or circular lower plates on the lower surface of the main body 2 such that the lower transparent plate is supported using the supporting member formed of a maintenance free anti-corrosion metal which is fixed to the main body 2.

4. 发明专利

JP2001280540A METHOD OF RENEWAL OF WORN-OUT EXISTING PIPE 失效
公开(公告)号：JP2001280540A
公开(公告)日：2001-10-10
申请号：JP2000091121
申请日：2000-03-29
申请人： NIPPON STEEL CORP
发明人： TAKABAYASHI TSUTOMU , MOCHIZUKI TAKASHI , SAKAMOTO TAKASHI , OKAMURA AKIRA , IWAMOTO ATSUSHI
IPC分类号： F16L55/26 , F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide the method of renewal of a worn-out existing pipe superior in capability for work execution by using a flexible pipe. SOLUTION: In this method of renewal, inserting into an obsolete existing pipe 5 a flexible pipe 6 of diameter smaller than its diameter as a new construction pipe, a traction cable 8 is left as inserted in the obsolete existing pipe 5 beforehand, the traction cable 8, after connecting its tip end to a tip end of the flexible pipe 6, is drawn by a draw means from one end of the obsolete existing pipe 5, the flexible pipe 6 is inserted therein.

5. 发明专利

JP2001172970A METHOD FOR DRIVING STEEL PIPE PILE INTO BASE ROCK 失效
公开(公告)号：JP2001172970A
公开(公告)日：2001-06-26
申请号：JP35581399
申请日：1999-12-15
申请人： NIPPON STEEL CORP
发明人： MORITAKA HIROO , SAITO TAKUYA , KIDA HIDEYUKI , OKAMURA AKIRA
IPC分类号： E02D7/18
摘要： PROBLEM TO BE SOLVED: To provide a working method for efficiently driving a pile into base rock by quickly removing rock chips created by crushing base rock with a pile tip portion by using a simple configuration utilizing natural energy. SOLUTION: At the tip portion 11 of a pile 1 consisting of a steel pipe pile having open ends, a pile 1 having a tip shoe 12 of a thick meat hard metal formed with a groove 18 in the up-down direction at a plurality of places in the peripheral direction on the rock base 2 is built in one united body, air is supplied from a filling pipe 3 arranged at the pile 1 while maintaining the water level 9 higher than water level 10 by filling water inside the pile, vibration is given to the base rock 2 of the pillar tip portion 11 by vibrohammer 6 while dissipating air bubble 17 to the pile outer peripheral gap 15 of the pile tip portion 11, creating a water flow from the inside to the outside of the pile by the water head difference ΔH between the water levels 9 and 10, thereby making the water current smooth with the groove 18 formed by the tip shoe 12, and the pile l is driven into the base rock 2 while discharging rock powder (debris) 16 crushed at the pile tip portion by the air lift action dissipating air bubble 17 to the pile outer peripheral gap 15.

6. 发明专利

JPH1128574A COVERING METHOD FOR METAL BASE MATERIAL WITH TITANIUM SHEET 失效
公开(公告)号：JPH1128574A
公开(公告)日：1999-02-02
申请号：JP19327797
申请日：1997-07-03
申请人： NIPPON STEEL CORP
发明人： OTA HIDEMI , OKAMURA AKIRA , HAYASHI NOBUYUKI , KANAI HISASHI
IPC分类号： E02B1/00 , B23K11/06 , B23K11/18 , B23K11/34 , B23K103/14 , E02D31/06
摘要： PROBLEM TO BE SOLVED: To provide a covering method for a metal base material with a titanium sheet without using a hold plate for a titanium sheet or a L shaped titanium fixing member and capable of surely/easily, and with good workability, covering a titanium sheet in excellent adhesion. SOLUTION: A fixing titanium sheet 3 to fix a covering titanium sheet 2 is fixed to a surface of a metal base material 1, an end part of one of a covering titanium sheet 2 and an end part of other of a covering titanium sheet 2a, which are adjacent at both sides of the fixing titanium sheet 3, are overlapped, one of the covering titanium sheet 2 and the other of a covering titanium sheet 2a are continuously welded/fixed to the fixing titanium sheet 3. Or an end part of one of the covering titanium sheet 2 is overlapped on the fixing titanium sheet 3 and continuously/intermittently welded/fixed by seam welding, an end part of other of the covering titanium sheet 2a is overlapped on an end part of one of the covering titanium sheet 2 and continuously welded/fixed by seam welding.

7. 发明专利

JPH0840351A OCEANIC CONNECTING METHOD FOR LARGE SCALED FLOAT UNIT 失效
公开(公告)号：JPH0840351A
公开(公告)日：1996-02-13
申请号：JP19619194
申请日：1994-07-29
申请人： NIPPON STEEL CORP
发明人： OKAMURA AKIRA , KAWAMOTO MASANORI
IPC分类号： B63B9/06 , B63B35/44 , B63B35/53
摘要： PURPOSE:To connect in the ocean easily further safely a float unit of constituting a large scaled float structure. CONSTITUTION:In an outer surface of a connecting end 8 of a side plate or partition 5 and bottom plate 4 in a submerged part of a float unit 2, a water stop member 9, having strength enduring against a water pressure of draft or more to be deformable further connectable from inside the float unit 2, and a backing strip 10 are left as provided, to tow the float unit 2 to float in a construction site, and after the float unit is pulled aside an existing float and temporarily fixed on the sea, the water stop member 9 is connected from inside a connecting part 6 of the float unit 2, to drain water in the inside of the connecting part 6. Thereafter, a connecting plate 15 is mounted to link in the backing strip 10 provided in the connecting end 8 of both the floats, to perform one side backing welding from the inside of the connecting part 6 in the air.

8. 发明专利

JP2003221816A UNDERWATER FRAMED CONSTRUCTION AND METHOD OF CONSTRUCTION THEREOF 审中-公开
公开(公告)号：JP2003221816A
公开(公告)日：2003-08-08
申请号：JP2002019705
申请日：2002-01-29
申请人： NIPPON STEEL CORP
发明人： HAGIWARA MASAHIRO , OKAMURA AKIRA , TOKIWA YASUHIRO
IPC分类号： E02B17/00 , E02B3/06
摘要： PROBLEM TO BE SOLVED: To provide an underwater framed construction for enabling rational designs of a jacket and piles and realizing an economic advantage. SOLUTION: In the underwater framed construction, wherein lower parts of legs 4 of a jacket 3 comprising the legs 4 and braces 5 are connected to plural piles 2 by means of grout, which piles 2 being placed in advance into underwater ground 1 in a predetermined position, the piles 2 with shear keys projecting from the underwater ground 1 to a height larger than a required height are inserted into the lower parts of the legs 4 having inner diameters larger than diameters of the piles, and a gap between each of inner peripheries of the legs 4 in the connection parts 4a and each of outer peripheries of the piles 2 is filled with a grout material 6 in a predetermined length. COPYRIGHT: (C)2003,JPO

9. 发明专利

JP2000273973A COVERING METHOD FOR ANTICORROSION METAL SHEET FOR PREVENTING DETERIORATION OF CONCRETE STRUCTURE 失效
公开(公告)号：JP2000273973A
公开(公告)日：2000-10-03
申请号：JP7919399
申请日：1999-03-24
申请人： NIPPON STEEL CORP
发明人： KANAI HISASHI , ISHIDA MASAMI , GUNJI SHIGERU , KAMEI MOTOHIRO , OKAMURA AKIRA , SAITO YUICHI
IPC分类号： E04B1/66 , C23F15/00
摘要： PROBLEM TO BE SOLVED: To easily provide a cover for a concrete structural body placed under corrosive environment by embedding and fixing an anticorrosive metal during concrete placement, placing the outer peripheral end portion of the anticorrosive sheet metal having the same material as a fixing metal on the fixing metal after concrete hardening, welding by overlapped partial welding and hermetically sealing. SOLUTION: As an anticorrosive metal, titanium or stainless steel which have no possibility of the deterioration with time is used. An anticorrosive fixing metal 3 is embedded in concrete 1 in such a manner that its metal surface appears on the surface of concrete 1. After hardening of concrete 1, the outer peripheral end portion of the sheet metal 2 having the same material as fixing metal 3 is placed in such a manner that it is overlapped to the fixing metal 3, and the overlapped portion is jointed by the indirect resistance seam welding method thereby forming a hermetic seal. In this way, the surface of a concrete structural body which is placed under the corrosive environment such as concrete structures, ozone treatment layers and flow layer type activated carbon adsorption layer can be covered simply and economically.

10. 发明专利

JP2000152475A METHOD OF INSTALLING PROTECTOR FOR PROTECTING LONG SUBSTANCE AT BOTTOM OF WATER 失效
公开(公告)号：JP2000152475A
公开(公告)日：2000-05-30
申请号：JP32089398
申请日：1998-11-11
申请人： NIPPON STEEL CORP
发明人： OTA HIDEMI , OKAMURA AKIRA , HAGIWARA MASAHIRO
IPC分类号： H02G9/02
摘要： PROBLEM TO BE SOLVED: To efficiently install a protector for a long substance laid at the bottom of water such as hard ground or the like. SOLUTION: The rear of a water-bottom traveler 17, which travels astride a long substance laid at the bottom 6 of water, is provided with a roller A 13, where a bag A 8 is wound so that the rotary shaft (20) may be orthogonal to the longitudinal direction of the long substance 1. The bag A 8 which is veered out of the roller A 13 accompanying the traveling of the water-bottom traveler 17 covers the long substance 1, an the bag A 8 covering the long substance 1 is charged with a filler 10. Moreover, against the irregularity at the water bottom 6, the water-bottom traveler 17 is provided with a roller B, where a bag B 9 to be inserted into the space under the long substance 1 is wound so that the rotary shaft (23) may be in the same direction as the longitudinal direction of the long substance 1. This is further provided with a guide roller 19 which guides the bag B 9, and a drawer (24) which draws in the bag B 9 through the under-area of the long substance 1, apart at the right and left of the long substance 1. Then, the bag B 9 veered out of the roller B 14 is drawn into the space at the water bottom 6 from the side of the long substance 1, and this bag B 9 is charged with a filler 10 for expansion, and it is buried in the recess 30 at the water bottom 6.

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