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1. 发明专利

JP2003247298A SHAPE STEEL WITH HOLE 审中-公开
公开(公告)号：JP2003247298A
公开(公告)日：2003-09-05
申请号：JP2002047968
申请日：2002-02-25
申请人： MAEDA CONSTRUCTION
发明人： SHIBANUMA MITSURU , OSHIMA YOSHITAKA , UEDA TATSUYA , IMANISHI HIDEKIMI
IPC分类号： E02D5/30 , E01D19/02 , E04C5/03
摘要： PROBLEM TO BE SOLVED: To provide a shape steel with holes easily manufacturable at low cost. SOLUTION: In this shape steel easily manufacturable at low cost, a plurality of through holes are formed at predetermined intervals in at least one member of a flange and a web in an H-steel (shape steel), the inside of the through holes are filled with concrete, and adhesion between the concrete and the shape steel is increased. Since a steel plate having a plurality of through hole formed at predetermined intervals is arranged in one member of the flange and the web in the shape steel orthogonally to the member, a projection part is formed on the surface of the shape steel, and because of formation of the through holes, adhesion is increased in the shape steel. In manufacturing of the shape steel increasing adhesion with the concrete, only the welding of the steel plate is required simply, and consequently, manufacturing is carried out easily at a low cost. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003129676A METHOD OF REINFORCING CONCRETE FRAME 审中-公开
公开(公告)号：JP2003129676A
公开(公告)日：2003-05-08
申请号：JP2001322462
申请日：2001-10-19
申请人： MAEDA CONSTRUCTION
发明人： SHIBANUMA MITSURU , UEDA TATSUYA , SUZUKI AKIKAGE
IPC分类号： E04G23/02
摘要： PROBLEM TO BE SOLVED: To provide a method of reinforcing a concrete frame making it possible to enhance construction workability as compared with conventional methods. SOLUTION: In an existing concrete frame, a precast concrete panel 3 with shear reinforcement 3a embedded therein is disposed around a beam 1 attached to a floor 2, with predetermined clearances 4a and 4b maintained between the concrete panel and the beam 1. In this case, the shear reinforcement steel 3a is anchored by reinforcement anchor bolts 6a to the floor 2 fitted with the beam 1, and the concrete panel 3 is supported against the beam 1 or the floor 2 using panel supporting anchor bolts 5. The clearances 4a and 4b between the beam 1 and the concrete panel 3 are filled with nonshrink mortar 8.

3. 发明专利

JPH05331810A CONSTRUCTION METHOD BY THRUSTING WORKS FOR COMPLEX CABLE STAGED BRIDGE 失效
公开(公告)号：JPH05331810A
公开(公告)日：1993-12-14
申请号：JP16384492
申请日：1992-05-30
申请人： MAEDA CONSTRUCTION
发明人： YOSHIDA YOJIRO , UEDA TATSUYA
IPC分类号： E01D11/00 , E01D11/04 , E01D21/00 , E01D21/04
摘要： PURPOSE:To construct a multi-span complex cable staged bridge with its construction term shortened and also with cost lowered by means of thrusting works. CONSTITUTION:A required number of bridge piers 2 and 2' are constructed at a side span, and a first leading prestressed concrete girder block 5a is fabricated at a fabrication yard 4 provided for the end zone of an erection block. A steel launching girder 6 is mounted onto the aforesaid leading prestressed concrete girder block 5a, and is thrusted ahead over the bridge piers 2 and 2' along the side span so as to be mounted over a feed frame 3, so that a plural number of prestressed concrete girders 5b, 5c, 5d... are continuously and integrally fabricated in the fabrication yard 4 in such a way as to be in pursuit of the leading prestressed concrete girder block 5a in order. Whenever each prestressed concrete girder block 5b and 5c, 5d... is fabricated so as to be extended, it is thrusted ahead, and is advanced so as to be moved over the respective feed frames 3. And after the launching girder 6 has passed a main tower 1, a mounting girder 6b at the base end of the launching girder 6 is left over as is, meanwhile, a leading launching girder main body 6a is demolished so as to be removed. After that, a steel girder 8 for a central span is erected from the tip end of the mounting girder 6b while being supported by a hanging diagonal member 7 stretched in a space interspaced from the main tower 1.

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