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1. 发明专利

JP2004028599A Preventive test method for hexavalent chromium elution in ground improvement 审中-公开
公开(公告)号：JP2004028599A
公开(公告)日：2004-01-29
申请号：JP2002180905
申请日：2002-06-21
申请人： Kajima Corp , 鹿島建設株式会社
发明人： IWAMOTO AKITOSHI , NOMASA AKIRA , MAMIYA TAKASHI , FUJITA TOKIO
IPC分类号： E02D3/12 , G01N33/24
摘要： PROBLEM TO BE SOLVED: To reduce a load in a hexavalent chromium elution test being performed in ground improvement.
SOLUTION: In a preventive test method for hexavalent chromium elution in the ground improvement, when the ground improvement using cement or a cement-based solidification material is enforced, local soil is sampled, cation exchange capacity and a phosphate absorption coefficient in the soil are measured, it is determined whether hexavalent chromium may be eluted from improved soil using the solidification material or not according to both the measured values in advance, and the cement or cement-based solidification material used for the ground improvement is selected based on the determined result.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JP2001254318A STRUCTURE FOF FIXING CABLE TO ANCHORAGE 失效
公开(公告)号：JP2001254318A
公开(公告)日：2001-09-21
申请号：JP2000069887
申请日：2000-03-14
申请人： KAJIMA CORP
发明人： YAMANOBE SHINICHI , FUJITA TOKIO , OKUBO HIDEKI
IPC分类号： E01D19/10 , E01D11/00 , E01D11/02 , E01D19/16 , E04C5/12
摘要： PROBLEM TO BE SOLVED: To obtain a fixing structure having excellent reliability and profitability, preventing the enlargement more than required of an anchorage by the rational arrangement of a PC steel material for anchorage in the structure for fixing a cable to the anchorage by a correspondence type prestress system. SOLUTION: Strands 1a constituting the main cable 1 are dispersed in the vertical and horizontal direction from the positions S of saddles for the anchorages A, and fixed to connecting jigs 3 dispersed and arranged at the front fixing positions F. Both ends of tendons 2 such as the PC strands arranged in concrete for the anchorages A in a U shape are fixed to each connecting jig 3, and the main cables 1 are fixed onto the anchorage A through the connecting jigs 3 by the tension of the tendons 2. The tendons disposed in the U shape to the same cables 1 and the tendons disposed in the U shape among the main cables 1 and other main cables 1 can be mixed and made to exist as the tendons 2.

3. 发明专利

JPH0231107A DEPTH SOUNDING APPARATUS 失效
公开(公告)号：JPH0231107A
公开(公告)日：1990-02-01
申请号：JP18136088
申请日：1988-07-20
申请人： KAJIMA CORP , FUAABELL KK
发明人： FUJITA TOKIO , SHIMIZU TOSHIMICHI
IPC分类号： G01C13/00
摘要： PURPOSE:To know the moving quantity of a cable and to measure depth on the basis thereof by providing the cable, a pulse generator and a detection switch. CONSTITUTION:A motor 11 is driven to wind up a cable 4 and a detection part 2 is held at the position of an origin detection switch 18. At this time, the switch 18 is in a turned-OFF state. Next, when the motor 11 is made free to release the holding of said switch 18, the detection part 2 falls under its own wt. and a reel 9 is rotated with the falling of the detection part 2 and the switch 18 is operated to reset a counter 17. A pulse generator 16 generates a pulse with the rotation of the reel 9 and the movement of the cable 4 and said pulse is counted by the counter 17. When the detection part 2 falls further to enter water 27 and the bottom part 2a thereof reaches the surface 28a of concrete 28, the container of a switch 19 is inclined to turn the switch 19 ON. When this ON-signal is applied to a control circuit 15 from the cable 14 through a line 23, the circuit 15 stops the counter 17.

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