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1. 发明专利

JP2001152413A METHOD FOR JUDGING SUITABILITY OF CONSTRUCTION OF WEATHERPROOFING STEEL BRIDGE 失效
公开(公告)号：JP2001152413A
公开(公告)日：2001-06-05
申请号：JP2000130984
申请日：2000-04-28
申请人： NIPPON KOKAN KK
发明人： TAKEDA KATSUAKI , KATO SHINJI
IPC分类号： E01D1/00 , E01D2/00 , E01D101/30
摘要： PROBLEM TO BE SOLVED: To judge the suitability of the construction of a weatherproofing steel bridge and select an optimum steel kind by dispensing with long-period site investigation and calculating salt contents coming by air high in reliability in consideration of the influence of the configuration of ground. SOLUTION: The method is provided with a first process for calculating an amount of generated salt on a beach by using the database of the wind direction and wind speed of an area including the construction planned place of the weatherproofing bridge and the beach, and a second process for judging the suitability of the construction of the weatherproofing steel bridge and selecting the optimum steel kind of the weatherproofing steel on the basis of the amount of the salt coming by air the reference of the judgment of the suitability of the construction of the weatherproofing steel bridge and the selection reference of the optimum steel kind of the weatherproofing steel by performing the wind flow analysis and salt dispersion analysis of the area leading to the construction planned place of the weatherproofing steel bridge from the beach in consideration of the influence of the configuration of the ground by using the configuration-of-the ground data of the area including the construction planned place of the weatherproofing steel bridge and the beach.

2. 发明专利

JP2000220109A BOX GIRDER BRIDGE BEAM EXCELLENT IN WEATHER RESISTANCE 失效
公开(公告)号：JP2000220109A
公开(公告)日：2000-08-08
申请号：JP2238799
申请日：1999-01-29
申请人： NIPPON KOKAN KK
发明人： TAKEDA KATSUAKI , KATO SHINJI
IPC分类号： E01D1/00 , E01D2/04 , E01D19/00 , E01D101/00 , E01D101/30
摘要： PROBLEM TO BE SOLVED: To provide a box girder bridge beam excellent in weather resistance which is costless and hard to corrode in the outside web of the box girder part and the under face flange. SOLUTION: The outside web 2 of the box girder 1 of this box girder bridge beam is perpendicularly arranged at the end of the floor slab. The outside corner 3 of the lower part of the box girder 1 is cut to form a curved shape and further, the outside web 2 of the box girder 1 is made of a weather resistant steel material on which stable rust is formed and the outside corner 3 of the lower part of the box girder 1 is cut to form a curved shape.

3. 发明专利

JPH1121816A BRIDGE STRUCTURE 失效
公开(公告)号：JPH1121816A
公开(公告)日：1999-01-26
申请号：JP18148297
申请日：1997-07-07
申请人： NIPPON KOKAN KK
发明人： OKADA ATSUSHI , TAKEDA KATSUAKI , KAWABATA ATSUTAKA
IPC分类号： E02D27/32 , E01D19/02
摘要： PROBLEM TO BE SOLVED: To relieve horizontal force (tensile force) at the time of an earthquake and to prevent the drawing-shearing fracture of an anchor part, and the inclination, the falling down of a bent part and the occurrence of a crack and fracture in a joined party between the bent part and an upper structure by introducing prestress into the anchor part and the bent part or a joint part between the anchor part and the bent part or a joint part between the bent part and an upper structure part. SOLUTION: This bridge structure is equipped with an anchor part 1; a bent part 10 provided on the anchor part 1; and a plurality of connecting members 17 which is fixed to the lower end of the anchor part 1 at one end and pierces the anchor part 1 and the bent part 10 at the other end. Tensile force is given to the connecting member 17 above the bent part 10 and concrete 13 is filled up in the bent part 10, and after the hardening of the concrete 13, the tensile force in the connecting member 10 is released to introduce prestress into the concrete 2, 13 in the anchor part 1 and the bent part 10.

4. 发明专利

JPH10168814A WIND-RESISTING DAMPING METHOD OF BRIDGE BEAM 失效
公开(公告)号：JPH10168814A
公开(公告)日：1998-06-23
申请号：JP32577396
申请日：1996-12-05
申请人： NIPPON KOKAN KK
发明人： SATO TAKESHI , TSUMURA NAOYOSHI , TAKEDA KATSUAKI
IPC分类号： E01D1/00 , E01D2/00
摘要： PROBLEM TO BE SOLVED: To disturb the vortex caused by peeling the flow of wind by the front edge part of the bridge beam to clamp the vibration of a bridge beam and improve the wind resisting stability by setting a plate-like member in parallel, to the bridge beam with a prescribed distance from the bridge beam in the upper part and/or lower part of the bridge beam near the axially right- angled directional center of the bridge beam. SOLUTION: A plate-like member 2 is provided in parallel to a bridge beam 1 with a prescribed distance from the bridge beam 11 in the upper part near the axially right-angled directional center of the bridge beam 1. The member 2 is fixed at a proper interval continuously over the whole axial directional span of the bridge beam 11 by use of poles provided vertically to the bridge beam 11. A vortex 3 peeled by the front edge part 1a of the bridge beam 11 is collided with the member 2 and disturbed to form a small vortex 7. Thus, the generated negative pressure is minimized, the vibration of the bridge beam 1 is effectively suppressed to improve the wind resisting stability, and an industrially efficient effect can be provided.

5. 发明专利

JPH1037127A CABLE DAMPING DEVICE IN OBLIQUELY STRETCHED BRIDGE 失效
公开(公告)号：JPH1037127A
公开(公告)日：1998-02-10
申请号：JP19866996
申请日：1996-07-29
申请人： NIPPON KOKAN KK
发明人： MURAKAMI TAKUYA , TAKEDA KATSUAKI
IPC分类号： E01D1/00 , E01D2/00 , E01D11/00 , E01D11/04 , E01D19/16 , E01D101/00 , F16F15/08
摘要： PROBLEM TO BE SOLVED: To facilitate the maintenance and control of an obliquely stretched bridge by connecting a section between a cable and a bridge beam through a damper made of viscoelastic rubber and a wire rope. SOLUTION: A bracket 26 is attached at a position where a line which is orthogonal to a cable C crosses a bridge beam G from a mounting position of a clamp 20 of the cable C. Next, a storage frame 24 on which viscoelastic rubber 30 and a transmission plate 22 are attached is attached to the bracket 26 by using a bracket 25 and a shaft pin 27, an eye splice 21a on one side of a wire rope 21 adjusted to predetermined length is locked in a locking metal fitting 20a of the clamp, and an eye splice 21b on the other side is locked in a locking metal fitting 22b on the storage frame 24 side. Then, when the cable C vibrates, vibration force is transmitted to the viscoelastic rubber 30 through the wire rope 21, vibration energy of the cable C is damped due to the vibration of the viscoelastic rubber 30, and the vibration of the cable C is suppressed. Consequently, it is unnecessary to replenish liquid in a damper owing to the use of the viscoelastic rubber 30 and it is possible to facilitate the maintenance and control of an obliquely stretched bridge.

6. 发明专利

JPH08134835A CABLE VIBRATION DAMPER 失效
公开(公告)号：JPH08134835A
公开(公告)日：1996-05-28
申请号：JP27638194
申请日：1994-11-10
申请人： SHUTO KOSOKU DORO KODAN , NIPPON KOKAN KK
发明人： ENOMOTO MAMORU , TAKANO HARUO , OGASAWARA MASAFUMI , SHIMOZATO TETSUHIRO , OKADA MASAZUMI , MURAKAMI TAKUYA , TAKEDA KATSUAKI
IPC分类号： E01D11/00 , E01D1/00 , E01D11/04 , E01D19/16
摘要： PURPOSE: To improve workability by jointly providing a vibration damper consisting of a viscoelastic body member and a vibration damper composed of a viscous fluid in the aerial height of a cable stretched between a structure and a main tower. CONSTITUTION: A cable 3 is stretched obliquely between a structure such as the stiffening girder of a cable stayed bridge and a main tower. A vibration damper A using a solid viscoelastic body member is installed on the base end side of the cable 3. A vibration damper C employing a viscous fluid is mounted to the cable 3 at a place upper than the vibration damper A. Accordingly, damping required for the vibration damper C is reduced due to the damping function of the vibration damper A, thus decreasing the mounting height of the vibration dampers A, C, then improving workability.

7. 发明专利

JPH02232404A BRIDGE EQUIPPED WITH PREVENTIVE MEASURES FOR AERODYNAMIC VIBRATION 失效
公开(公告)号：JPH02232404A
公开(公告)日：1990-09-14
申请号：JP5008189
申请日：1989-03-03
申请人： NIPPON KOKAN KK
发明人： FUJISAWA NOBUMITSU , TAKEDA KATSUAKI , WADA HIROHISA
IPC分类号： E01D1/00 , E01D2/04 , E01D11/02 , E01D11/04
摘要： PURPOSE:To contrive to reduce amplitude of vortex excitation by providing gratings over the deck surface between each of both end parts of a main girder of a bridge and each of side stringers provided on both ends of the bridge, and by further providing guide plates on the underside of the bridge at each of positions a little closer to the center of the bridge. CONSTITUTION:Gratings 20 are formed over a deck 3 at positions near side stringers 5 installed at the opposite sides of a bridge 1, and at the side ends of the deck, a little closer to the center of the bridge 1, guide plates 21 are provided facing downwardly aslant, with their lower ends made lower than the lower ends of the side stringers 5. The bridge is made in such structure that lateral wind blowing to the bridge runs from the underside through the gratings 20 to the surface of the deck 3 being guided by the guide plates 21. Air flow 22 is then made to form a second boundary layer 23 along the surface of the deck 3. Then the second boundary layer, interacting with a strong boundary layer 7, decreases negative pressure applying to the deck surface and restrains generation of vortex excitation, dislocating the phase. Thereby amplitude of the vortex excitation can be reduced and the vortex produced at the surface of the deck 3 becomes smaller.

8. 发明专利

JPS61221470A STRAKE FOR CORNER CROSS-SECTION HAVING CIRCULAR ARC CORNER ANGLE 失效
公开(公告)号：JPS61221470A
公开(公告)日：1986-10-01
申请号：JP6074685
申请日：1985-03-27
申请人： NIPPON TELEGRAPH & TELEPHONE , NIPPON KOKAN KK
发明人： HORI SHIRO , IHARA YOJI , KIGAMI OSAMU , TSUJI MATSUO , TAKEDA KATSUAKI , TSUMURA NAOYOSHI
IPC分类号： E04H9/14 , E04H12/00 , E04H12/28

9. 发明专利

JP2003166213A SUSPENSION BRIDGE 审中-公开
公开(公告)号：JP2003166213A
公开(公告)日：2003-06-13
申请号：JP2001366737
申请日：2001-11-30
申请人： NIPPON KOKAN KK
发明人： MURAKAMI TAKUYA , TAKEDA KATSUAKI
IPC分类号： E01D11/00 , E01D1/00 , E01D2/00 , E01D11/02 , E01D19/16
摘要： PROBLEM TO BE SOLVED: To provide a suspension bridge capable of securing dynamic wind resistance stability while keeping well-travelling property and reducing the drag force acting on stiffening girders. SOLUTION: A plurality of stiffening members 11 made of steel plates suspended by a main cable 5 through hangers 6 are respectively parallelly installed in the bridge-axial direction of the central zone 10 of the center span of the suspension bridge. A plurality of floor slabs 13a, 13b are installed with mutual spaces 14 in the bridge-axial direction of the stiffening members 11. The distance of the hangers 6 in the central zone 10 is made closer than the distance of the hangers at the outside of the central zone 10. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2001271311A PLATE GIRDER BRIDGE HAVING EXCELLENT WEATHER RESISTANCE 失效
公开(公告)号：JP2001271311A
公开(公告)日：2001-10-05
申请号：JP2000087721
申请日：2000-03-28
申请人： NIPPON KOKAN KK
发明人： KATO SHINJI , TAKEDA KATSUAKI
IPC分类号： E01D1/00 , E01D2/00 , E01D2/02 , E01D101/30
摘要： PROBLEM TO BE SOLVED: To provide a plate girder bridge, in which the shortening of the lifetime of the plate girder bridge by the inflow of salt to the plate girder internal surface side, on which the rain washing of salt by a rainfall cannot be expected, can be prevented at a low cost and which has excellent weather resistance. SOLUTION: In the plate girder bridge with a plurality of plate girder composed of webs and flanges, the plate girder bridge or the like having a structure, in which the lower flanges of the plate girders positioned on at least the windward side in a plurality of the plate girders disturb the flow of a wind, and excellent weather resistance is provided.

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