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1. 发明专利

JPH10147976A CONCRETE STRUCTURAL BODY 失效
公开(公告)号：JPH10147976A
公开(公告)日：1998-06-02
申请号：JP30639296
申请日：1996-11-18
申请人： MAEDA CONSTRUCTION , RAILWAY TECHNICAL RES INST
发明人： WATANABE TADATOMO , TSUKISHIMA DAISUKE , SUZUKI AKIKAGE , NAKAJIMA YOSHIMITSU
IPC分类号： E04B1/16
摘要： PROBLEM TO BE SOLVED: To improve the strength and execution property of a concrete structural body by placing concrete in a form made of a precast member mixed with reinforcing short fibers. SOLUTION: This concrete structural body 10 is constituted of a tubular precast concrete form 11 mixed with reinforcing short fibers and having a square cross sectional shape as a whole and concrete 12 placed in the concrete form 11. Since the concrete form 11 incorporates no structural reinforcing bars, it is easy to manufacture, the concrete forms 11 stacked in two stages on a footing 13 can be connected to each other by connecting means such as bolts and connecting plates, and a firm column body constituted of the concrete form 11 and concrete 12 is formed when the concrete 12 placed in the concrete form 11 is hardened. The prescribed structural strength can be applied to the concrete structural body 10 by the mixing of short fibers without incorporating a reinforcing material such as reinforcing bars in a precast member, and durability and structural strength can be increased without impairing the execution property.

2. 发明专利

JPH0351416A CONSTRUCTING METHOD FOR CONTINUOUS UNDERGROUND WALL HAVING POLE BUILT THEREIN 失效
公开(公告)号：JPH0351416A
公开(公告)日：1991-03-05
申请号：JP18421089
申请日：1989-07-17
申请人： MAEDA CONSTRUCTION
发明人： TABATA MINORU , SUZUKI AKIKAGE , UEBABA YASUSHI
IPC分类号： E02D5/20
摘要： PURPOSE:To construct a continuous underground wall which has a pole built therein by trenching a continuous underground wall which has a steel box body mounted therein, and cutting off the front face of the box body to provide a mold, and disposing a reinforcing steel in the inner hollow portion of the box body and placing concrete therein. CONSTITUTION:After an element 1 is excavated, partition walls 4 are built around a reinforcing cage 3 having a square, tubular steel box body 2 built therein and at both ends of the cage 3. Next, concrete is placed into the element 1 to construct a wall body 7. Another wall body 7 is constructed in the same way while leaving a predetermined space between them, and the work of constructing a continuously integrated wall body 7 between the wall bodies 7 is repeated sequentially to construct a series of continuous underground walls. Then trenching is carried out to cut off the front side steel plate of the steel box body 2 and a mold 8 is installed on the front side of an opening 2a and a reinforcing steel 9 is provided in the inner hollow portion of the box body 2 and concrete is placed. Most part of the pole is thereby integrated into the wall thickness of the wall body 7.

3. 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.

4. 发明专利

JPH1096260A JOINT AND COCRETE STRUCTURAL BODY 失效
公开(公告)号：JPH1096260A
公开(公告)日：1998-04-14
申请号：JP25022096
申请日：1996-09-20
申请人： MAEDA CONSTRUCTION
发明人： SHUTTO KEIZO , WATABE TADASHI , MISHIMA TETSUYA , SUZUKI AKIKAGE , NAKAJIMA YOSHIMITSU
IPC分类号： E04B1/16 , E04B1/48 , E04G23/02
摘要： PROBLEM TO BE SOLVED: To reduce weld defects to promote reliability and, at the same time, to provide a joint and a concrete structural body applicable also to parts on which large load is exerted and capable of shortening a construction period of time. SOLUTION: The circumference of a concrete column 11 is surrounded by concrete forms 12 and 13, the concrete forms 12 and 13 are joined with cotter joints 20, and spaces between the concrete column 11 and concrete forms 12 and 13 are filled with grout 14. In that case, each of the cotter joints 20 is equipped with fixed sections 21 and 22 and a joint section 23 connecting the fixed sections 21 and 22, dovetail slots are provided to the fixed sections 21 and 22, and an interlocking part capable of being inserted into the dovetail slots are provided to the joint section 23.

5. 发明专利

JPH04272388A BOTTOM WATER CUT-OFF METHOD OF VERTICAL SHAFT 失效
公开(公告)号：JPH04272388A
公开(公告)日：1992-09-29
申请号：JP5608891
申请日：1991-02-27
申请人： MAEDA CONSTRUCTION
发明人： SUZUKI AKIKAGE , UEBABA YASUSHI , UCHIDA HARUFUMI
IPC分类号： E02D15/06 , E21D1/00 , E21D1/10 , E21D5/01
摘要： PURPOSE:To allow the bottom concrete resist pressure acting on the bottom surely to cut-off water completely. CONSTITUTION:After the construction of a vertical shaft 4, boring guide pipes 5 inserting and fitting rising and falling pipes 5' into the front ends of them so that they are capable of rising and falling are erected, and boring rods 9 are inserted in the guide pipes 5 to bore holes in the bottom ground. Tension members are inserted into the holes from above, and fixed anchors 11 are made by solidifying the tension members with hardening materials filled in the holes. After that, the tension members 10 are strained and, at the same time, the rising and falling pipes 5' of the guide pipes 5 are pulled up to a required height to expose the tension members 10. Underwater concrete is placed on the bottom ground downward of them to fix exposed parts of the tension members 10 to the bottom concrete slab 15. A temporary construction in the vertical shaft 4 is removed and, at the sane time, the inside thereof is drained.

6. 发明专利

JP2001302171A HOISTING JIG 失效
公开(公告)号：JP2001302171A
公开(公告)日：2001-10-31
申请号：JP2000113802
申请日：2000-04-14
申请人： MAEDA CONSTRUCTION
发明人： NAKAHARA KATSUICHI , HIMURO MASARU , NISHIKAWA KOJI , TABATA MINORU , SUZUKI AKIKAGE , OBARA TAKAYUKI
IPC分类号： E04G21/16 , B66C1/12
摘要： PROBLEM TO BE SOLVED: To provide a hoisting jig capable of maintaining the attitude of a structural body in a generally constant state by generally uniformly maintaining the forces acting on the lifting positions of the structural body and the loads acting on lifts when the structural body is moved up and down using a plurality of lifts. SOLUTION: This hoisting jig 10 is used when a precast ring (structural body) 1 is moved up and down using a plurality of lifts 2,.... The hoisting jig comprises a plurality of fixed blocks 12,... installed at the lifting positions of the precast ring 1, a plurality of running blocks 11,... connected to lifting wire ropes 2a,... delivered from the plurality of lifts 2,..., and a loop lifting wire rope 13 slidably stretched across the fixed blocks 12,... and running blocks 11,... through the lower side of the fixed blocks 12,... and the upper side of the running blocks 11,.... The precast ring 1 is suspended through the lifting wire rope 13.

7. 发明专利

JPH11131822A JOINT AND CONCRETE STRUCTURE 失效
公开(公告)号：JPH11131822A
公开(公告)日：1999-05-18
申请号：JP29286197
申请日：1997-10-24
申请人： MAEDA CONSTRUCTION
发明人： SHUTTO KEIZO , WATABE TADASHI , MISHIMA TETSUYA , SUZUKI AKIKAGE , NAKAJIMA YOSHIMITSU
IPC分类号： E04G23/02
摘要： PROBLEM TO BE SOLVED: To dispense with a welding work by providing L-shaped locking parts on a plurality of hoops of concrete forms precasted with each U-shaped section in such a manner as to be protruded from the end part in mutually opposite directions. SOLUTION: Concrete forms 12, 13 are formed into U-shaped sections, and a plurality of tie hoops 16, 17 are arranged therein and precasted. A joint 20 is formed of metallic connecting parts 21, 22, which are provided with L-shaped locking arts 23, 24 on the tips. The locking parts 23, 24 are arranged so as to be protruded from the connecting surface between the concrete forms 12, 13 in mutually opposite directions. A clearance capable of inserting the counter locking parts 24, 23 is provided on the connecting surface between the concrete forms 12, 13. The concrete forms 12, 13 are arranged so as to surround an existing concrete column 11, and the respective locking parts 23, 24 are engagingly locked. A grout material 15 if filled between the concrete column 11 and the concrete forms 12, 13. Thus, the field work can be facilitated, and the constructing period can be shortened.

8. 发明专利

JPH0351427A CONSTRUCTION METHOD OF CONTINUOUS UNDERGROUND WALL INCORPORATING PILLAR INSIDE ITSELF 失效
公开(公告)号：JPH0351427A
公开(公告)日：1991-03-05
申请号：JP18421189
申请日：1989-07-17
申请人： MAEDA CONSTRUCTION
发明人： SUZUKI AKIKAGE , FUJIYAMA KOJI , TABATA MINORU
IPC分类号： E02D17/20
摘要： PURPOSE:To construct an underground continuous wall incorporating the whole cross-sectional area of pillars within the wall thickness of the wall-body by building up reinforcing-bar cages incorporating a squared cylindrical steel box- body, on both the inside and outside faces of which metal fittings are projected, into the inside of an element. CONSTITUTION:Metal fittings 5 are welded to fittings-steel plates 4 projected on both the inside and outside faces in the shape of ribs, and a pillar steel 6 and a pillar reinforcing-bar 7 are loaded into the inside. Then, reinforcing-bar cages 3 longitudinally incorporating a squared cylindrical steel box-body 2 having an internal open cross-sectional area in which a pillar can be constructed, are built up in a drilled element 1. Concrete is placed into the element 1 and the box-body 2 to form a wallbody and the pillars incorporated into the wall- body as a one-piece. Further, a pillar, part of which is incorporated within the wall thickness of the wall-body can be integrally formed. Thus, an internal space of an underground portion and the site can be utilized to a maximum, the constructing operation can be simplified, and freedom can be given to the design.

9. 发明专利

JP2003270059A SYSTEM FOR MEASURING STRESS PRESENT IN REINFORCING BAR OF REINFORCED CONCRETE STRUCTURE 审中-公开
公开(公告)号：JP2003270059A
公开(公告)日：2003-09-25
申请号：JP2002071012
申请日：2002-03-14
申请人： MAEDA CONSTRUCTION , KEISOKU RES CONSULTANT KK
发明人： HONMA MASAYUKI , OKAWA NAOYA , MISHIMA TETSUYA , TEZUKA HIROAKI , SUZUKI AKIKAGE , MAGISHI TORU , OKAMOTO TAKUJI , RA KOJUN
IPC分类号： G01L1/00 , G01L1/12
摘要： PROBLEM TO BE SOLVED: To provide a system for measuring stress present in reinforcing bars of a reinforced concrete structure capable of inexpensively and easily measuring stress of the reinforcing bars without damaging the reinforcing bars regardless of whether the concrete structure is existing one or newly provided one. SOLUTION: The system for measuring stress present in the reinforcing bars of a reinforced concrete structure is characterized in that it has a stress measuring sensor 11 provided with a hollow member 12 in which a reinforcing bar to be measured is inserted, a secondary coil 13 wound on the internal periphery of the hollow member 12, a primary coil 14 wound on the external periphery of the hollow member 12, and a thermometer 15 for measuring the temperature of the reinforcing bar 5; a conversion equation computing means (computing part) 20 for inserting a reinforcing bar for calibration in the stress measuring sensor 11, providing a pulse current for the primary coil 14, and acquiring a conversion equation through the use of both an induced current value acquired from the secondary coil 13 and the temperature of the thermometer 15; a detecting means for acquiring both the induced current value and temperature acquired from a pulse current of the primary coil 14 via the secondary coil 13 through the use of the stress measuring sensor 11 mounted to the reinforcing bar to be measured 5; and a stress computing means (computing part) 20 for computing the acquired induced current value and the temperature through the use of the conversion equation to determine the stress present in the reinforcing bar. COPYRIGHT: (C)2003,JPO

10. 发明专利

JP2002332750A ASEISMIC REINFORCING STRUCTURE FOR REINFORCED CONCRETE SUPPORT COLUMN 失效
公开(公告)号：JP2002332750A
公开(公告)日：2002-11-22
申请号：JP2001137355
申请日：2001-05-08
申请人： MAEDA CONSTRUCTION
发明人： YAMAMOTO HARUTO , OBARA TAKAYUKI , SUZUKI AKIKAGE , MISHIMA TETSUYA , TABATA MINORU
IPC分类号： E01D19/02 , E01D21/00 , E01D22/00 , E04G23/02
摘要： PROBLEM TO BE SOLVED: To provide aseismic reinforcing structure for a reinforced concrete support column allowing the aseismic reinforcing work of a bridge pier to be easily performed without causing the extension of a construction period and the increase of a construction cost. SOLUTION: An aseismic reinforcing part 12 formed of reinforced concrete installed around an existing wall type concrete bridge pier skeleton 11, for instance, as the reinforced concrete support column, is wound up, and a plurality of anchors 14 are anchored in a surface layer part of the wall type concrete bridge pier skeleton 11. The heads of anchor bolts 13 provided at the anchors 14 are fixed to the aseismatic reinforcing part 12 to restrain at least a structural element of the aseismatic reinforcing part 12.

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