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1. 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.

2. 发明专利

JP2002173910A JOINING STRUCTURE OF STEEL TRUSS BEAM AND REINFORCED CONCRETE PIER 失效
公开(公告)号：JP2002173910A
公开(公告)日：2002-06-21
申请号：JP2000372264
申请日：2000-12-07
申请人： NIPPON KOKAN KK
发明人： NAKANISHI KATSUYOSHI , MURAKAMI TAKUYA
IPC分类号： E01D19/02 , E01D1/00 , E01D2/00 , E01D6/00 , E01D19/00 , E01D21/00 , E01D101/30
摘要： PROBLEM TO BE SOLVED: To provide a joining structure of a steel truss beam and a reinforced concrete pier having no fear that concrete in a joining part of a truss lower chord member and the reinforced concrete pier crushes. SOLUTION: In joining of the steel truss beam 10 and the reinforced concrete pier 1, a truss upper chord member 11 is placed on or fixed to an upper part of the reinforced concrete pier 1, and the truss lower chord member 12 and a truss diagonal member 13 are vertically joined to a contact plane of the reinforced concrete pier 1 via bearing plates 5a and 5b.

3. 发明专利

JP2001172917A UPPER STRUCTURE OF BRIDGE OR THE LIKE, AND ITS CONSTRUCTION METHOD 失效
公开(公告)号：JP2001172917A
公开(公告)日：2001-06-26
申请号：JP36048299
申请日：1999-12-20
申请人： NIPPON KOKAN KK
发明人： NAKANISHI KATSUYOSHI , MURAKAMI TAKUYA
IPC分类号： E01D19/12 , E01D1/00 , E01D2/00 , E01D2/04 , E01D19/00 , E01D21/00 , E01D101/30 , E01D101/40
摘要： PROBLEM TO BE SOLVED: To obtain the upper structure of a bridge or the like that has simple structure, can be maintained and controlled easily after construction, and can be constructed and has improved workability even if a space below a girder is narrow and dimensions below a road surface are limited, and its construction method. SOLUTION: A plurality of steel shells 3 whose section is in nearly U shape or box shape while they have a support part 6 at a lower bridge surface side are installed at a specific interval in the direction on the pier or abutment, and a girder 2 whose inside is filled with concrete 8 and a floor slab 20 that is laid on the support part 2 of the adjacent girder 2 while being bridged are provided.

4. 发明专利

JPH10185759A AIR-FORCE MEASURING DEVICE AND LIFT AND MOMENT MEASURING SYSTEM APPARATUS USING THE MEASURING DEVICE 失效
公开(公告)号：JPH10185759A
公开(公告)日：1998-07-14
申请号：JP35009296
申请日：1996-12-27
申请人： NIPPON KOKAN KK
发明人： MURAKAMI TAKUYA , KATO SHINJI
IPC分类号： G01L5/00 , G01M9/06
摘要： PROBLEM TO BE SOLVED: To obtain an air-force measuring device by which a very small air force acting on a model during the vibration of the air can be measured with good accuracy and by which a measuring error or an irregularity in a measurement can be reduced by a method wherein exciters which excite a measuring cave are installed on the upstream side and the downstream side of the measuring cave. SOLUTION: One pair of exciters 24 which support the upstream side and the downstream side of a measuring cave 3 excite the measuring cave 3, and four model support rods 26 at a model fixation implement 25 support a model 6. Then, load detectors 9a', 9b' which are installed between tip parts of the support rods 26 and the model 6 detect a force acting on the model 6 due to the air which is vibrated when a wind is blown from a wind blowing source 1. As a result, a situation in which the model 6 is vibrated in the measuring cave 3 at a standstill and a dynamically equivalent situation can be obtained. In addition, since the model 6 is not vibrated, an inertia force is not generated, and a reaction force which acts on the model 6 becomes an unsteady air force as it is. Consequently, since an operation to remove an inertia force is not required, a measurement is simplified, and a measuring error due to the operation to remove the inertia force is eliminated.

5. 发明专利

JPH10159016A CABLE-STAYED BRIDGE AND ITS ATTENUATION IMPROVING METHOD 失效
公开(公告)号：JPH10159016A
公开(公告)日：1998-06-16
申请号：JP31751096
申请日：1996-11-28
申请人： NIPPON KOKAN KK
发明人： KATO SHINJI , MURAKAMI TAKUYA
IPC分类号： E01D1/00 , E01D11/00 , E01D11/04 , E01D19/16
摘要： PROBLEM TO BE SOLVED: To improve an attenuation efficiency of torsional vibration of a girder of a cable-stayed bridge caused by wind without increasing the size of a cable damping device. SOLUTION: A girder side anchorage 3b of a cable 1 is a lower end portion of the girder 2. A relative displacement xtanθ between the cable 1 and the girder 2 at the cable supporting position 4 accompanied with the rotation θof the girder 2 can be secured effectively, kinetic energy accompanied with the vibration is dissipated as thermal energy of a cable damping device arranged at the cable supporting position 4, and therefore the attenuation increases and the vibration is terminated.

6. 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.

7. 发明专利

JP2002138414A WIND-RESISTANT BRIDGE AND ITS INSPECTION CAR 失效
公开(公告)号：JP2002138414A
公开(公告)日：2002-05-14
申请号：JP2000334072
申请日：2000-11-01
申请人： NIPPON KOKAN KK
发明人： YUI ROKUSUI , MURAKAMI TAKUYA
IPC分类号： E01D1/00 , E01D19/10 , E01D22/00
摘要： PROBLEM TO BE SOLVED: To provide a wind-resistant bridge solving the problem of an increase in the weight of a girder at a time when a wind-resistant stabilizing member is installed and efficiently improving wind resistance without increasing the weight of the girder and an inspection car proper to the bridge. SOLUTION: A plurality of windshield plates are installed along the bridge axial direction at regular intervals in the bridge axial direction on the underside of the bridge. Accordingly, since stream lines passing in the bridge axial direction converge in three dimensions, the conditions of a convergence are not equalized in the bridge axial direction, and exciting force vibrating the bridge can be inhibited low. The inspection car, in which the windshield plates are formed in intermittent guide rails for the inspection car and which has a fall preventive means for transferring to the intermittent sections, is provided.

8. 发明专利

JP2001200608A UPPER STRUCTURE OF BRIDGE OR THE LIKE AND CONSTRUCTION METHOD THEREFOR 失效
公开(公告)号：JP2001200608A
公开(公告)日：2001-07-27
申请号：JP2000011157
申请日：2000-01-20
申请人： NIPPON KOKAN KK
发明人： NAKANISHI KATSUYOSHI , MURAKAMI TAKUYA
IPC分类号： E01D19/12 , E01D2/00 , E04B5/02
摘要： PROBLEM TO BE SOLVED: To provide an upper structure of a bridge or the like simple in structure, facilitating maintenance and control after construction and having good workability of construction allowing execution even in the case of a narrow space under the girder to limit the dimensions under the road surface and a construction method therefore. SOLUTION: This upper structure is provided with girders 2 and floor systems 30 laid to bridge on the support parts 6 of the adjacent girders 2, and the girders 2 are so constructed that plural steel shells 3 having a substantially U-shaped or box-shaped section, provided with opening parts at designated spaced in the longitudinal direction, and having the support part 6 on the lower bridge surface side are installed at designated spaces in the cross direction of a bridge pier or on an abutment and the interior of each steel shell 3 is filled with concrete 20.

9. 发明专利

JP2001193174A STEEL-CONCRETE JOINING STRUCTURE 失效
公开(公告)号：JP2001193174A
公开(公告)日：2001-07-17
申请号：JP2000325498
申请日：2000-10-25
申请人： NIPPON KOKAN KK
发明人： NAKANISHI KATSUYOSHI , TAKEDA KATSUAKI , MURAKAMI TAKUYA
IPC分类号： E04B1/16 , B28B23/00 , E04B1/48
摘要： PROBLEM TO BE SOLVED: To provide a steel-concrete joining structure capable of reducing and controlling shearing force acting on a joining member without reducing loading capacity of the joining member. SOLUTION: In this steel-concrete joining structure, shear keys 2 for transmitting shearing force are disposed on a steel member 1, a perforated steel plate 4 provided with holes for inserting shear keys in the same array as the shear keys disposed on the steel member on the loading point side of the steel member is secured onto the steel member to pass the shear keys, a perforated steel plate having a small board thickness than the perforated steel plate provided with holes for inserting the shear keys on the distal side from the loading point in the same array as the shear keys disposed on the steel member is secured onto the steel member to pass the shear keys, a gap between the shear key and the holes of the perforated steel plate is disposed so that concrete will not flow in the gap, and then concrete is placed on the steel member.

10. 发明专利

JP2000192422A WIND-RESISTANT BRIDGE 失效
公开(公告)号：JP2000192422A
公开(公告)日：2000-07-11
申请号：JP23570199
申请日：1999-08-23
申请人： NIPPON KOKAN KK
发明人： MURAKAMI TAKUYA , TAKEDA KATSUAKI
IPC分类号： E01D1/00 , E01D2/02 , E01D11/02 , E01D11/04
摘要： PROBLEM TO BE SOLVED: To inhibit the weight of a sheet-metal girder, and to improve the wind resistance of a bridge by forming a corner cut preventing separation at the lower end of the girder of a wind having a speed component in the bridge-axial orthogonal direction at the lower end of the girder. SOLUTION: A sheet-metal girder is formed in a corner cut shape by a flange under one girder and a corner cut 10, the shape of a sectional corner angle is changed slightly and a fluid pattern in the periphery of a cross section is altered largely, and aerodynamic characteristics are stabilized. Since a flow separated from the first separation point of a bridge girder collides with the next separation point and a separating flow is generated anew even from the next separation point at that time, both flows interfere. The separating flows are brought near to sectional side faces by an interference, and the generation of large separation is prevented and a harmful vibrations are damped. According to the bridge girder, the installation of the corner cuts 10 such as the installation of a fairing and the installation of a plate is made unnecessary, and the weight of the girder is lightened. Consequently, the corner cuts 10 are formed at the lower flange of the sheet-plate girder and vibrations are damped, and the weight of the girder is lightened and an economical design can be conducted.

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