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1. 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

2. 发明专利

JP2000017676A GROUND STABILIZING CONSTRUCTION METHOD 失效
公开(公告)号：JP2000017676A
公开(公告)日：2000-01-18
申请号：JP18948398
申请日：1998-07-03
申请人： MAEDA CONSTRUCTION
发明人： TANAKA MIKIHIKO , SHIMADA KEIJI , SATO HIDETOSHI , HOSOKAWA MASANORI , TEZUKA HIROAKI
IPC分类号： E02D29/045 , E21D13/00
摘要： PROBLEM TO BE SOLVED: To provide a ground stabilizing construction method, in which an anchoring member can also be used as an intermediate pile such as a strut and a support at the time of the execution of lining works in a construction method, in which the same effect is obtained simply at a lower cost, in the stabilizing construction method of a ground by driving a tension member into a stable ground layer as an anchor. SOLUTION: In the process of excavation construction works, anchoring members 10 such as H-steel are driven until they reach a stable ground layer 2 as anchors, not tension members, and underwater concrete is unified with the anchoring members 10 and placed onto a bottom-section ground 4. The anchoring member 10 can also be used as an intermediate pile at a time when a timbering member 18 is installed and a support for a lining plate 19 at a time when lining works are conducted at that time.

3. 发明专利

JP2006348590A WATER CONTENT LOWERING DEVICE AND WATER CONTENT LOWERING METHOD 审中-公开
公开(公告)号：JP2006348590A
公开(公告)日：2006-12-28
申请号：JP2005176273
申请日：2005-06-16
申请人： MAEDA CONSTRUCTION
发明人： FUJIYAMA KOJI , OKAWA NAOYA , TEZUKA HIROAKI , HIRAI HIDEKI , OKADA NAOHITO , TANAKA NORIAKI
IPC分类号： E02F7/00 , E02D3/10
摘要： PROBLEM TO BE SOLVED: To provide a water content lowering device and method for lowering the water content of the high water content soil in a short time to shorten a construction period and to attain cost saving while having little influence on peripheral environment. SOLUTION: This water content lowering device comprises at least one of a vibrating device for applying vibration to an object which is the water content soil, and a pressurizing device for applying shearing force to the object; a suction device for sucking water content of the object vibrated by the vibration; and a discharge device for discharging the water content sucked by the suction device, to the outside of the object. COPYRIGHT: (C)2007,JPO&INPIT

4. 发明专利

JP2000017677A GROUND STABILIZING CONSTRUCTION METHOD 失效
公开(公告)号：JP2000017677A
公开(公告)日：2000-01-18
申请号：JP18948498
申请日：1998-07-03
申请人： MAEDA CONSTRUCTION
发明人： TANAKA MIKIHIKO , SHIMADA KEIJI , HOSOKAWA MASANORI , TEZUKA HIROAKI
IPC分类号： E02D29/045 , E21D13/00
摘要： PROBLEM TO BE SOLVED: To provide a ground stabilizing construction method, which has the wider applicability of the execution of works and is more efficient and simpler than a conventional construction method, in the ground stabilizing construction method, in which underwater concrete for the prevention of the phenomenon of heaving, etc., and cutoff improvement is used at the time of excavation works. SOLUTION: In a process, in which an earth retaining wall 2 is placed around an excavating ground and excavation works are conducted by underwater excavation, projecting sections 7, stepped sections and inclined surface sections are formed on the surface of the earth retaining wall 2 before underwater concrete 11 is placed onto a bottom-section ground 3, and the earth retaining wall is placed in a tapered shape. Placed underwater concrete 11 is retained by the earth retaining wall 2 by integral curing with the projecting sections 7, and a concrete disk 6 is pushed and stopped by the stepped sections and the inclined plane sections, and the earth retaining wall 2 is pushed and stopped by forming in the tapered shape.

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