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1. 发明专利

JPH09209373A STRUCTURE FOR TAKING MEASURE FOR STRUCTURE FROM LIQUEFACTION 失效
公开(公告)号：JPH09209373A
公开(公告)日：1997-08-12
申请号：JP1688996
申请日：1996-02-01
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： KUBOTA TOSHIHISA , YOSHIMI YOSHIAKI , KAWASAKI HIROTAKA , TSUCHIYA NOBUHIRO , MIYATA KAZU , SUZUKI TAKESHI , KAWABE MAMORU , SATO MASAYOSHI , FUKUTAKE TAKEYOSHI , FUJITA YUTAKA , TAMAOKI KATSUYUKI , MIYAMOTO TAKESHI
IPC分类号： E02D27/34
摘要： PROBLEM TO BE SOLVED: To minimize the effect of ground liquefaction, particularly on existing structures. SOLUTION: A cylindrical ring frame 5 is constructed in the ground G below the outer periphery of a tank 1, with the upper end of the ring frame 5 integrated with the outer periphery of the foundation 3 of the tank 1 via coping 6 and with the lower end located inside a liquefaction layer G1. Also, the lower end of the ring frame 5 may be located inside a non-liquefaction layer G2 so that it can sink. Further, piles may be placed in place of the ring frame 5.

2. 发明专利

JPH06160380A DECIDING METHOD FOR EXTERNAL FACING STONE MATERIAL FOR BUILDING CONSTRUCTION 失效
公开(公告)号：JPH06160380A
公开(公告)日：1994-06-07
申请号：JP30736392
申请日：1992-11-17
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： TAKE TAKAO , YAMAZAKI YOKO , IKETANI JUNICHI , SAWAIDE MINORU , MIYAMOTO TAKESHI
IPC分类号： E04C2/00 , G01N17/00 , G01N33/38
摘要： PURPOSE:To previously decide change of properties of an external facing stone material by adding a predetermined quantity of hydrochloric acid to refined water, dropping it to the material, and observing it after a predetermined period. CONSTITUTION:Aqueous solution obtained by adding a predetermined quantity of concentrated hydrochloric acid to a quantitatively refined water and agitating the mixture is prepared, dropped on an entire surface of a stone material to be identified, the material is left to stand as it is until it is dried, and the surface of the material is observed after a predetermined period. As a result, the material in which unstable iron content is contained is discolored at its part, and the material in which the content is not contained is not discolored. Thus, since an external facing stone material for building construction can be previously identified in terms of potentiality of discoloring, the material is previously evaluated before the material is mounted in a structure, a quality of the material can be decided, the material can be effectively selected, and hence a claim after the construction, a post-contract compensation can be reduced.

3. 发明专利

JPS61207714A METHOD OF IMPROVING SANDY GROUND 失效
公开(公告)号：JPS61207714A
公开(公告)日：1986-09-16
申请号：JP4765485
申请日：1985-03-11
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： MIYAMOTO TAKESHI , TAMAOKI KATSUYUKI , GOTO SHIGERU , SHAMOTO YASUHIRO
IPC分类号： E02D3/12
摘要： PURPOSE:To reinforce a sandy ground, by a method wherein suspension, in which fine clay, such as bentonite, is suspended, is stored up to a given water level in a hole or a trench in the sandy ground. CONSTITUTION:Bentonite muddy water 3 having bentonite concentration of weight ratio of 5% or less is fed in a hole 2 through a muddy water pipe 7 from a muddy water feed source, and is stored up to a given water level by means of a ball tap 8. Thereafter with a pump 4 driven, the muddy water 3 pumped up from a bottom 2b of the hole 2 is discharged in the hole 2 again. This enables suspension to be uniformly penetrated in a ground without requiring an expensive installation.

4. 发明专利

JPH11269458A GROUT FOR GROUND INJECTION 失效
公开(公告)号：JPH11269458A
公开(公告)日：1999-10-05
申请号：JP7386598
申请日：1998-03-23
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON CHEMICAL IND
发明人： MIYAMOTO TAKESHI , SEKINE AKIRA , ABE SUKETAKA , TSUKAHARA SHIGERU
IPC分类号： C09K17/02 , C09K17/12 , C09K17/48 , C09K103/00 , C09K107/00
摘要： PROBLEM TO BE SOLVED: To obtain a grout of which the homogel has a very long gelling time and which exhibits a gel strength practically enough by using, as effective components, an aq. active silicic acid soln. and an acidic reactant. SOLUTION: This grout is prepd. by adding at least one acidic reactant selected from phosphoric, sulfuric, hydrochloric, and citric acids, etc., to an aq. active silicic acid soln. to adjust the pH to lower than 2. If necessary, a sequestering agent (e.g. a polyphosphate), a metal corrosion preventive (e.g. N,N-dibutylthiourea), and a polymn. inhibitor (e.g. glycerin) are incorporated into the grout. The gelling time of the homogel is at least 5 days, and the unconfiend compression strength of solidified sand is 0.5 kg/cm or higher. The aq. active silicic acid soln. is prepd. by removing alkali ions from a water- soluble silicate (e.g. sodium silicate) by an ion-exchange method, etc., has at least one silanol group capable of participating in condesation in an aq. soln. at a pH of 2-4, and has a mol.wt. of 1,000 or lower, an average particle size of 1-2 nm, and an SiO2 concn. of 12 wt.% or lower.

5. 发明专利

JPH085483A INJECTION PRESSURE MEASURING DEVICE 失效
公开(公告)号：JPH085483A
公开(公告)日：1996-01-12
申请号：JP13344894
申请日：1994-06-15
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： MIYAMOTO TAKESHI
IPC分类号： E02D3/12 , G01L5/00 , G01L7/00
摘要： PURPOSE:To provide an injection pressure measuring device which makes possible the strict grasp of the situation of injection of chemicals. CONSTITUTION:This injection pressure measuring device has a pressure converter 12, which uses a foil distortion gauge as a converting element, an upper filter member 15, which is made of porous material and is provided, at the center of the bottom, with a recess 16b for accommodating the pressure converter 12 bonded to the inner face of itself, and a lower filter member 1 7 bonded to the bottom of the upper filter member 16.

6. 发明专利

JPS60253617A METHOD AND APPARATUS FOR MEASURING COMPACTNESS OF SOIL ON SITE 失效
公开(公告)号：JPS60253617A
公开(公告)日：1985-12-14
申请号：JP11052484
申请日：1984-05-30
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： MIYAMOTO TAKESHI
IPC分类号： E02D1/02
摘要： PURPOSE:To easily measure the compactness of soil on site by a method in which the compactness of wet soil is obtained from the volume of a test hole and the weight of soil sampled by excavation from the test hole, and the dryness of the soil is obtained from the compactness and water content of wet soil. CONSTITUTION:A rubber balloon 7 is provided to a container of a volume V1. A piston 6b is pushed to add a pressure to the balloon 7, the value (r1) of a volume-indicating graduation 6e when the balloon 7 is maximumly expanded is read, and the value (r2) for a volume V2 is also read. A comparision constant K is obtained by the following formula. K=V2-V1/r2-r1(cm ). The initial value (r0) of the graduation 6e for a container of V0 is read, and a test hole 10 is excavated to take soil of a weight (m). The water content W of the soil is obtained, and the value (r3) when the balloon 7 is expanded in the hole 10 until the graduation 6e becomes unchanged is read. The compactness Pt of wet soil on site is obtained by the following formula. V=V0+K(r3-r0)-C, where V is volume of the hole 10 and C is volume of the hole 2a of a plate 2. Pt=m/V(t/cm ) and Pd (dry compactness) = Pt/(W+100)X100(t/cm ).

7. 发明专利

JPS5827680A DISPOSAL OF ASH, SLUDGE, AND THE LIKE INTO WATER 失效
公开(公告)号：JPS5827680A
公开(公告)日：1983-02-18
申请号：JP12619281
申请日：1981-08-12
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： TAMAOKI KATSUYUKI , HORIUCHI SUMIO , GOTOU SHIGERU , ONOUE ATSUO , NAKAYAMA NOBUO , MIYAMOTO TAKESHI , SHIYAMOTO YASUHIRO , KOBAYASHI TSUNEO
IPC分类号： C02F11/00 , B09B1/00
摘要： PURPOSE:To perform formation of excellent ground having stability when applied for reclamation without contamination of water, by mixing ash, sludge, etc. with water into a muddy body having predetermined fluidity, and discharging the muddy body near the bottom of water such as sea. CONSTITUTION:Waste matter A such as ash and sludge is mixed with water B and agitated by a mixer 1 and an agitator 2, to form a muddy body having predetermined fluidity. A caking material C may be added at needs. The waste matter A' changed into the muddy state such that it can be carried by a pump 3 is fed into a transport pipe 4 by the pump 3. The transport pipe 4 extending from the water surface such as sea into the under water is provided with an outlet 5 near the water bottom N, to discharge the muddy waste matter A' through the outlet 5. Consequently, the waste matter A' is gently disposed on the water bottom N without diffusion or flotation. At this time, the waste matter on the water bottom N maintains density determined during the agitation, so that the waste matter A' can be made to have proper strength.

8. 发明专利

JP2002242173A CHEMICAL GROUTING METHOD 失效
公开(公告)号：JP2002242173A
公开(公告)日：2002-08-28
申请号：JP2001036132
申请日：2001-02-13
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： MIYAMOTO TAKESHI
IPC分类号： E02D3/12
摘要： PROBLEM TO BE SOLVED: To form a large diameter improved body by filling chemical grouting for many hours in the foundation improvement. SOLUTION: When grouting chemical to a target ground for foundation improvement, a chemical solution 2 for which the gelling time is adjusted to longer than 24 hours is used, this chemical solution is pressured by a pressured air and is continuously injected into the ground 4 longer than at least 24 hours. An infiltration test by an infiltration testing apparatus modeling a target ground is carried out in advance, the infiltration performance of the chemical solution at the target ground is forecasted in advance, and grouting is carried out based on that performance. Many observation wells are provided at the target ground, and the grouting is carried out while confirming the situation of infiltration of the chemical solution in each observation well.

9. 发明专利

JP2000109834A CHEMICAL LIQUID TO BE INJECTED IN SOIL 失效
公开(公告)号：JP2000109834A
公开(公告)日：2000-04-18
申请号：JP28761198
申请日：1998-10-09
申请人： SHIMIZU CONSTRUCTION CO LTD , NIPPON CHEMICAL IND
发明人： MIYAMOTO TAKESHI , SEKINE AKIRA , TSUKAHARA SHIGERU , ABE YASUHIRO , KANEDA YOSHIRO
IPC分类号： C09K17/06 , C09K17/08 , C09K17/12 , C09K103/00
摘要： PROBLEM TO BE SOLVED: To prolong gel time and obtain practical compressing strength and improved durability by using an aqueous solution of active silicic acid and an aqueous solution of acidic silica sol as effective components. SOLUTION: An aqueous solution of active silicic acid which substantially does not contain any salt is obtained by removing alkali ions from a water-soluble silicate such as sodium silicate and the like by means of an ion exchange method or the like. Acidic silica sol is obtained by mixing the water-soluble silicate with an acid such as sulfuric acid or the like and adjusting pH in an acidic region. An amount of the aqueous solution of acidic silica sol mixed with the aqueous solution of active silicic acid to prepare a chemical liquid to be injected in soil is preferably 2-200 wt.% of total amount of SiO2 existing in the aqueous solution of active silicic acid. Further, pH of the chemical liquid is preferably less than 4. Besides the two components, an inorganic salt such as aluminum sulfate or the like may be added to the chemical liquid as an auxiliary agent.

10. 发明专利

JPH10292391A ASEISMIC BASE ISOLATION METHOD 失效
公开(公告)号：JPH10292391A
公开(公告)日：1998-11-04
申请号：JP9940297
申请日：1997-04-16
申请人： SHIMIZU CONSTRUCTION CO LTD
发明人： GOTO SHIGERU , SHAMOTO YASUHIRO , MIYAMOTO TAKESHI
IPC分类号： E02D27/34
摘要： PROBLEM TO BE SOLVED: To obtain effective aseismic base isolation effects easily and at low costs by a method wherein a liquefactive ground under a structure is improved and a dilute chemical liquid is injected into the ground in the range from the underside of the structure to a predetermined depth to improve the ground. SOLUTION: A sufficient ground improvement is applied, by an ordinary ground improvement method, to the ground in the range S1 from the underside of the structure 10 to a depth below a predetermined depth, out of the ground G in the range S below the structure 10. And a dilute chemical liquid L is injected into the ground in the range S2 from the underside 10a of the structure 10 to the predetermined depth to improve the ground. As the liquid L, for example, a liquid 3-5 times thinner than the conventional concentration is used. In the range S2 into which the liquid L is injected, rigidity can be maintained normally, and when an earthquake occurs, the rigidity is lowered so that a damper function is produced to prevent seismic waves from being transmitted to the structure 10 and hence a large displacement can be avoided and liquefaction can be prevented.

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