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71. 发明专利

JP2000080649A ROTARY PRESS-IN PILE AND EXECUTION CONTROL METHOD THEREFOR 失效
公开(公告)号：JP2000080649A
公开(公告)日：2000-03-21
申请号：JP30902398
申请日：1998-10-29
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , OKI HITOSHI , TAKEDA TOMOKI
IPC分类号： E02D5/28 , E02D5/56
摘要： PROBLEM TO BE SOLVED: To improve penetration performance and improve execution efficiency further by obtaining specific penetration resistance at the time of execution, and controlling the penetration continuation and penetration completion of a rotary press-in pile according to the penetration resistance. SOLUTION: Parameters are measured and recorded on the ground, and results are put in an equation Rp= (cosθ-sinθ)(Ht-Qwh)+(sinθ+αcosθ) Lb)/ (1+γ)(sinθ+αcosθ)+α(Dp'/Dw')(cosθ-αsinθ)} before execution or during an execution process to obtain penetration resistance, and the pile tip bearing power and extraction proof strength are evaluated and measured, where θis blade angle, α is the friction coefficient between the ground and a steel sheet, Ht is pile tip acting torque horizontal force substituted value, Lb is pile tip mount load, Dp' is base plate action circle diameter, Dw' is blade action circle diameter, Qwh is tip ground horizontal resistance, γ is vertical tip resistance coefficient, and Rp is base plate section ground penetration resistance. A foundation pile having excellent quality and performance can be obtained.

72. 发明专利

JPH11153194A DAMPING MEMBER INTEGRATING ELASTO-PLASTIC AND VISCO-ELASTIC DAMPER 失效
公开(公告)号：JPH11153194A
公开(公告)日：1999-06-08
申请号：JP33478197
申请日：1997-11-20
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , WATANABE ATSUSHI
IPC分类号： E04H9/02 , F16F1/50 , F16F7/12 , F16F9/30 , F16F15/08
摘要： PROBLEM TO BE SOLVED: To provide a damping member having a vibration reducing effect against large, medium and small earthquakes and strong wind as well as low in cost. SOLUTION: A damping material 3 is filled in a circumference of a steel made central axial tension member 1, an outside of the damping material 3 is covered with a first steel made buckling prevention member 2a, additionally, the damping material 3 is filled in the outside of the first steel made buckling prevention member 2a, the outside of the damping material 3 (3a, 3b) is covered with a second steel made buckling prevention member 2b, one end of the first steel made buckling prevention member 2a and one end of the steel made central axial tension member 1 are fastened, one end of the second steel made buckling prevention member 2b and the other end of the steel made central axial tension member 1 are fastened, and the first steel made buckling prevention member 2a and the second steel made buckling prevention member 2b are made visco- elastically contact with each other through the damping material 3.

73. 发明专利

JPH10159253A FIXED COLUMN BASE 失效
公开(公告)号：JPH10159253A
公开(公告)日：1998-06-16
申请号：JP33271096
申请日：1996-11-28
申请人： NIPPON STEEL CORP , NIPPON STEEL METAL PROD
发明人： SAEKI EIICHIRO , SAKAE KAZUMI
IPC分类号： E04C3/30
摘要： PROBLEM TO BE SOLVED: To simplify the shape and structure and improve the constructive workability and reduce the material cost and the construction cost, by embedding an anchor box in a foundation or a slab and erecting a column into the anchor box. SOLUTION: An anchor box 3 is embedded in a foundation 1 or a slab and a column 2 is erected in the anchor box 3. A curing material 8 such as mortar or the like is charged in the gap between the column 2 and the anchor box 3 to integrally form the column and the anchor box. In this time, a level- adjusting bolt 4 and horizontal position-adjusting bolts 5, 5 are rotated to precisely adjust the erected position of the column 2 in the vertical and horizontal planes. When necessary, reinforcing plates 6, 9 are extended at the upper and lower peripheral sides of the anchor box 3 and anchored in the foundation or the slab by anchoring members 7 such as a shear key or the like. In this way, the structure is simplified and the construction is facilitated and the cost is reduced.

74. 发明专利

JPH08296306A STRUCTURE OF FOLDED PLATE ROOF 失效
公开(公告)号：JPH08296306A
公开(公告)日：1996-11-12
申请号：JP12598995
申请日：1995-04-26
申请人： NIPPON STEEL CORP
发明人： HACHIMAN KAZUYOSHI , SAEKI EIICHIRO , YAZAKI MITSUHIKO
IPC分类号： E04D3/363
摘要： PURPOSE: To construct roofing work simply and safely without needing specialized tools, such as an exclusive machine for flat lock seams and a welding machine and skilled workers, to reduce the cost of its material and construction, to shorten a construction period, and to prevent rain water from leaking through fitting holes for folded plate roofing materials. CONSTITUTION: A terminal mountain part 21 of a folded plate roofing material 20 to be newly fitted is directly fitted to the upper faces of purlins 23, with fasteners 22, and a starting mountain part 24 of the folded plate roofing material 20 is elastically put on the terminal mountain part 21 of the folded plate roofing material 20 being previously fitted. In this way, a required number of the folded plate roofing materials 20, 20 are progressively connected with each other. The fasteners 22 are hidden on the underside of the folded plate roofing material 20 being newly fitted.

75. 发明专利

JPH08226124A STEEL PIPE PILE AND BURIAL METHOD THEREFOR 失效
公开(公告)号：JPH08226124A
公开(公告)日：1996-09-03
申请号：JP5522495
申请日：1995-02-21
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , OKI HITOSHI , HATTA YOSHIMICHI
IPC分类号： E02D5/56 , E02D7/22
摘要： PURPOSE: To increase the penetration function of a steel pipe pile as well as accuracy for workability by providing an open rib on the internal surface of a steel pipe above the end of the steel pipe pile, and forming a porous cylindrical section out of the rib and the internal surface of a steel pipe thereunder. CONSTITUTION: The end of a steel pipe pile 1 is provided with a spiral blade 2 having an outer diameter two times as large as the outer diameter of the steel pipe 1a thereof and one pitch of threads. Also, a pipe 1a above the end of the pipe 1a of the pile 1 is internally provided with an open rib 3 for facilitating the closure with sediment at the time of the burial of the pile 1, and a holed cylindrical section 4 is formed out of the rib 3 and the internal surface of the pipe 1a thereunder. Then, the pile 1 is sunken into the subsoil under the application of torque, and the section 4 is filled with sediment. The support bottom section of the pile 1 is formed out of the sediment and the end of the pipe 1a. According to this construction, no bottom plate is required at the lower end of the pipe 1. Thus, the pile 1 encounters small penetration resistance, and can be buried easily and accurately under the application of small torque.

76. 发明专利

JPH08151639A CONSTRUCTION METHOD FOR STEEL COLUMN OF STRUCTURE 失效
公开(公告)号：JPH08151639A
公开(公告)日：1996-06-11
申请号：JP31952294
申请日：1994-11-30
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , YAZAKI MITSUHIKO , HATTA YOSHIMICHI , TANAKA MASAYA , OKI HITOSHI
IPC分类号： E02D27/00 , E02D27/12
摘要： PURPOSE: To accurately construct a steel column on the foundation of a structure and install no footing on the foundation. CONSTITUTION: Spiral vanes 2 are provided on the outer periphery of a steel pipe 1a, and a connection section 3 to the steel column 5 of a structure is provided at the upper end of the steel pipe 1a to form a foundation steel pipe 1. The foundation steel pipe 1 is aligned with the plane position where the steel column 5 is installed. Rotating force is applied to the foundation steel pipe 1, the foundation steel pipe 1 is sunk to the position where the connection section 3 becomes the connection level to the lower end of the steel column 5, and the steel column 5 is connected and erected at the upper end of the foundation steel pipe 1.

77. 发明专利

JP2002146778A FULL-SCALE TYPE INSPECTION METHOD FOR STEEL-PIPE PILE WELDING SECTION 失效
公开(公告)号：JP2002146778A
公开(公告)日：2002-05-22
申请号：JP2000341629
申请日：2000-11-09
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , NAGATA MAKOTO
IPC分类号： E02D5/24 , E02D5/56 , G01L5/00
摘要： PROBLEM TO BE SOLVED: To improve the reliability of inspection by directly confirming the strength of a welding section by torsional torque working in constructing a steel pipe pile. SOLUTION: The strength of the mutual welding joining sections of steel pipes in a rotary press-in type steel pipe pile is inspected by measuring torque working to the steel pipe pile during the construction works of the steel pipe pile in which a blade is fixed at a front end.

78. 发明专利

JP2002105954A ROTARY PENETRATION STEEL PIPE PILE 失效
公开(公告)号：JP2002105954A
公开(公告)日：2002-04-10
申请号：JP2000295715
申请日：2000-09-28
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , NAGATA MAKOTO
IPC分类号： E02D5/56 , E02D5/28
摘要： PROBLEM TO BE SOLVED: To make a large diametral pile installable by reducing the penetration resistance and to provide a penetration steel pipe pile capable of sufficiently bringing out a support force as a pile. SOLUTION: In a rotary penetration steel pipe pile 1 provided with a blade provided with a steel pipe 2 from which the front end is cut off spirally and a spiral fixed in a shape corresponding to the front end, the blade 3 passes through the center from a point on the outer periphery of a circular steel plate and has a cut which reaches the contact position of the blade and the inner periphery of the steel pipe and further, the angle made by the outer peripheral part and the shaft of the steel pile 2 is formed in almost right angle and the front end opening of the steel pipe 2 is substantially closed and fixed as features.

79. 发明专利

JP2002047677A LOAD CARRYING TEST METHOD USING DOUBLE VANE TYPE PILE AND ITS DEVICE 失效
公开(公告)号：JP2002047677A
公开(公告)日：2002-02-15
申请号：JP2000236512
申请日：2000-08-04
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , KOMATSU AKIRA , OKI HITOSHI , MURAZAKI SHUJI
IPC分类号： E02D33/00 , G01N3/00
摘要： PROBLEM TO BE SOLVED: To provide a load carrying test method using a double vane type pile and capable of conducting an indentation test and a pullout test with the spiral vanes of the double vane type pile arranged in a bearing stratum and to provide its device. SOLUTION: A cylinder 18 is arranged in the pile 3 having a vane 2 along the outer periphery near the tip section of an outer tube 1, and the tip section of the cylinder 18 is arranged protrusively from the outer tube 1. A vane 21 is provided along the outer periphery near the tip section of the cylinder 18, and the cylinder 18 is rotatively pressed into the ground together with the pile 3, with the rotation and the upward shift of the cylinder 18 constrained against the pile 3. The vanes 2 and 21 are allowed to intrude into the bearing stratum A, then the pile 3 and the cylinder 18 are relatively separated in the vertical direction by a jack to conduct the indentation test or the pullout test of the pile.

80. 发明专利

JP2001279665A JOINT STRUCTURE OF PIPE 失效
公开(公告)号：JP2001279665A
公开(公告)日：2001-10-10
申请号：JP2000090989
申请日：2000-03-29
申请人： NIPPON STEEL CORP
发明人： SAEKI EIICHIRO , MARUYAMA SAKAE , OKI HITOSHI
IPC分类号： E02D5/24
摘要： PROBLEM TO BE SOLVED: To provide a joint structure of a pipe obviating field welding, being inexpensive and low in the processing degree and capable of securing sufficient strength. SOLUTION: This joint structure of piles joined by a one side bolt 15 by butting mutual end parts 3a and 5a of the upper and lower piles 3 and 5, is characterized by joining doubling plates 7 extending to the mating pile side by being welded in the circumferential direction, touching the outer peripheries 3c and 5c of the butting end parts 3a and 5a of the respective piles 3 and 5 and the end parts 3a and 5a of the respective piles 3 and 5 overlapping at butting time of both piles 3 and 5 by the one side bolt 15.

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