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21. 发明专利

JP2000096514A VIBRATION DAMPER FOR VERTICAL VIBRATION OF VIADUCT 失效
公开(公告)号：JP2000096514A
公开(公告)日：2000-04-04
申请号：JP26326098
申请日：1998-09-17
申请人： OTSUKA HISAAKI , KUMAGAI GUMI CO LTD , SUMITOMO METAL IND
发明人： OTSUKA HISAAKI , SUZUKI TAKEYASU , KANEKO HOMARE , KATSUKAWA FUJITA , IZAWA MAMORU , TONEGAWA TARO
IPC分类号： E01D1/00 , E01D2/00
摘要： PROBLEM TO BE SOLVED: To install a dynamic vibration absorber (TMD) at the center section of a bridge girder while taking reaction from sections excepting a pier and an abutment, and to damp the vertical vibrations of a bridge girder by traffic vibrations most effectively. SOLUTION: Both ends of a bridge girder 1 are borne by piers 2, 2, and a reaction beam 3 is mounted in approximately parallel with the bridge girder 1 in the lower section of the bridge girder 1. Rods 4, 5 are projected in the direction opposed from approximately the central sections of the bridge girder 1 and the reaction beam 3 respectively, and a vertically rotatable lever 6 is interposed between the bridge girder 1 and the reaction beam 3. The rod 5 of the reaction beam is connected at one end section of the lever 6, and the rod 4 of the bridge girder is coupled at a place near to one end section of the lever 6. A dynamic vibration absorber (TMD) 10 is joined at the other end of the lever 6. When external force is transmitted from the bridge girder 1 to the reaction beam 3, the reaction beam 3 returns reaction to the lever 6. The reaction vibrates the TMD 10 through the lever 6. Accordingly, the generated inertial force of the TMD 10 is amplified by the lever 6, and works to the bridge girder 1 as controlling force.

22. 发明专利

JPH11247442A CONCRETE PLACING METHOD FOR COMPOSITE FLOOR SLAB 失效
公开(公告)号：JPH11247442A
公开(公告)日：1999-09-14
申请号：JP4509498
申请日：1998-02-26
申请人： SUMITOMO METAL IND
发明人： ABE YUKIO , YANAGIMOTO YASUTOMO , IZAWA MAMORU
IPC分类号： E04B5/40 , E01D1/00 , E01D2/00 , E01D101/26 , E04G21/02 , E04G21/04
摘要： PROBLEM TO BE SOLVED: To provide a concrete placing method for a composite floor slab which is excellent in workability in site, effective for reducing a quantity of leveling concrete, and profitable in installation costs. SOLUTION: A joint steel plate 4 is placed between section steels 3 arranged on a bottom steel plate 2. In respective sections of a steel shell part 1, concrete injection ports 6a, 6b, 6c, ... and discharge ports 7a, 7b, 7c,... are arranged. From the injection port 6a of a steel shell part 1a in the first section, highly fluid concrete 5 is forcibly supplied with a pressure. From the discharge port 7a in the steel shell part 1a, a predetermine quantity of highly fluid concrete 5' overflows so as to flow into the discharge port 7b of a steel shell part 1b in the following section via a hose 8. Then the hose 8 is moved and installed in the discharge port 7b of the steel shell part 1b in the following section and the discharge port 7c in a section steel shell part 1c in the section next to the section of the steel shell part 1b. A hose 9 from a concrete pump vehicle and the like is mounted to the injection port 6b of the steel shell part 1b in the section to be filled next time, and similarly, each section is filled with concrete sequentially.

23. 发明专利

JPH11229319A BRIDGE GIRDER VIBRATION DAMPING DEVICE 失效
公开(公告)号：JPH11229319A
公开(公告)日：1999-08-24
申请号：JP3124998
申请日：1998-02-13
申请人： SUMITOMO METAL IND , KUMAGAI GUMI CO LTD
发明人： MIYAGAWA KAZUO , IZAWA MAMORU , TONEGAWA TARO , SATO TAKEYOSHI , SUZUKI TAKEYASU , KANEKO HOMARE , KATSUKAWA FUJITA
IPC分类号： E01D1/00 , E01D2/00 , E01D19/04 , E04H9/02
摘要： PROBLEM TO BE SOLVED: To provide a bridge girder vibration damping device which can solve the problems posed by a frame, by eliminating the frame, and which can further enhance damping efficiency. SOLUTION: A lever 12 is pivoted to the inside of a bridge girder 11, and a damping device 14 which is free to move relative to the bridge girder 11 is directly pivoted to one end of the lever 12 while a rod 16 attached to an abutment 18 at the other end is directly pivoted to the other end of the lever 12. The damping device 14 comprises a damper 14a and a weight 14c coupled to the damper 14a via a spring 14b. Thus, because a damper main body serves also as a frame receiving the reactions of an elastic element and the damper, a simplified structure is provided, design for damping is easily achieved, and a lightweight weight becomes usable.

24. 发明专利

JPH04202906A STEEL MEMBER FOR BRIDGE 失效
公开(公告)号：JPH04202906A
公开(公告)日：1992-07-23
申请号：JP33211490
申请日：1990-11-29
申请人： SUMITOMO METAL IND
发明人： YUI YOZO , IIMURA OSAMU , IZAWA MAMORU , YUGAWA MASAYUKI
IPC分类号： E04C3/04 , E01D1/00 , E01D2/00 , E01D101/30
摘要： PURPOSE:To simplify a manufacturing process, decrease the welding residual stress and improve the fatigue strength and improve the appearance by butting the upper edges of a pair of steel materials having a U-shaped section to each other to be welded and joined to form a steel member for a bridge as one member where the upper and lower flange portions and right and left webs are connected to each other. CONSTITUTION:The upper edges of a pair of steel materials 11 having a U-shaped section are butted to be welded and joined 12. Subsequently, upper and lower flange portions 111 and right and left web portions 112 are connected to each other to be formed into one member. The steel member 10 thus formed is used in a main girder 52a of a bridge upper part 5. Thus, a manufacturing process can be simplified, the welding residual stress can be decreased, and the fatigue strength and the appearance can be improved.

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