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1. 发明专利

JP2000204877A METHOD OF PLACING REINFORCEMENT INTO SOIL MORTAR FOREPOLING FOR TUNNEL 失效
公开(公告)号：JP2000204877A
公开(公告)日：2000-07-25
申请号：JP519099
申请日：1999-01-12
申请人： KAJIMA CORP
发明人： ISHITANI TADATOSHI , AMANO MITSUYA , SONODA TAKEO , YAMADA ISAO , SAKATA SHINICHI , SAITO SHIGERU
IPC分类号： E21D9/04 , E21B3/00 , E21B6/02
摘要： PROBLEM TO BE SOLVED: To provide a method of placing a reinforcement into a soil mortar forepoling capable of rapidly placing the core material in tunneling. SOLUTION: A method of placing a reinforcement into a soil mortar forepoling comprises a preparation work stage Z1 in which bits 6 and 6 are reduced in diameter for excavating a pilot hole and a core material 13 to be placed into the forepoling and a pressing material 14 to press the core material 13 are placed in a boring device A, a pilot hole excavating work stage Z2 in which a pilot hole is excavated, a pre-core material set work stage Z3 in which a next core material 13 is placed in the pilot hole excavated to a specified depth, a bit diameter increasing and core material holding work stage Z4 in which a bit located at the specified depth is increased in diameter and the rear part of the next core material 13 is fixedly held, a diameter expanding, post-moving, and core material remaining work stage Z5 in which the diameter- increased bit is moved backward to excavate with an increased diameter to a specified position, the core material is pushed out from the boring device and made it remained in a pile hole, and a solidifying agent is filled into the hole together with the boring and agitated and mixed with excavated soil, and a bit diameter reducing and backward movement work stage Z6.

2. 发明专利

JPS6088795A ENLARGING SHIELD CONSTRUCTION METHOD 失效
公开(公告)号：JPS6088795A
公开(公告)日：1985-05-18
申请号：JP19672683
申请日：1983-10-20
申请人： KAJIMA CORP
发明人： KIJIMA SHIROU , ISHITANI TADATOSHI , TAKEUCHI TOSHIHIKO
IPC分类号： E21D9/06 , E21D11/04

3. 发明专利

JPH0280790A SOIL RECEIVING WORK BY HORIZONTAL AUGER 失效
公开(公告)号：JPH0280790A
公开(公告)日：1990-03-20
申请号：JP23008488
申请日：1988-09-16
申请人： KAJIMA CORP
发明人： NOMA MASAHARU , MIO KOHEI , ISHITANI TADATOSHI , MATSUYAMA MASAO , YAMADA KENJI , WATANABE MATSUO , AMANO MITSUYA
IPC分类号： E21B10/32 , E02D3/12 , E21B7/04 , E21D9/10
摘要： PURPOSE:To form piles with good operating efficiency by a method in which while excavating a pile pit of a larger diameter than a pilot pit, a solidifying agent of a given pressure is injected and mixed with excavated soil with stirring, and the bit is closed at a given depth to form a pile with cover lock part. CONSTITUTION:In excavating the ground, a horizontal auger A is turned as the first bits 6 are on their original positions, and the base is advanced to excavate a pilot pit K to a given depth. A cylinder is contracted by a given stroke to retract and inner cylinder 4, and the second bits 7 are expanded through the bits 6. A pilot pit L of a larger diameter than the pit K is excavated by the excavating parts 7a of the bits 7, and the first and second solidifying agents of a given pressure are injected from an injecting cylinder. While jetting the solidifying agents, as shown by arrows, by opening a check valve, the base is retracted and the auger A is drawn out. The cylinder 4 is advanced by a given stroke at a given depth M (300-500mm, for example) from the inlet, and the bits 7 are closed through the bits 6 to form a pilot pit K. A pile D is formed to complete one pile, followed by excavation for the next position.

4. 发明专利

JPS6132451B2 失效
公开(公告)号：JPS6132451B2
公开(公告)日：1986-07-26
申请号：JP9729782
申请日：1982-06-07
申请人： KAJIMA CORP
发明人： YAMAMOTO TAKASHI , ISHITANI TADATOSHI , HAYAZAKI TSUTOMU , TSUCHIHIRO MICHIO
IPC分类号： E02D9/02

5. 发明专利

JPS5543148A MATERIAL FOR SOLIDIFYING FLIMSY GROUND 失效
公开(公告)号：JPS5543148A
公开(公告)日：1980-03-26
申请号：JP11686278
申请日：1978-09-22
申请人： KAJIMA CORP
发明人： ARIIZUMI AKIRA , YAMAMOTO TAKASHI , ISHITANI TADATOSHI , HAYAZAKI TSUTOMU , TSUCHIHIRO MICHIO
IPC分类号： C09K17/00 , C02F11/00 , C09K17/02 , C09K17/10 , C09K103/00
摘要： PURPOSE:A solidifying agent of cement that contains cement and an inoganic ammonium salt, thus being capable of rapidly solidifying even organic soil containing humus in a short time. CONSTITUTION:An inorganic ammonium salt as ammonium sulfate is added to a solidifying agent of cement. The addition of the inorganic ammonium salt to cement accelerates the hydration of cement even when the soil contains humus that inhibits the hydration reaction. Futher, the formation of ettringite is observed, which is thought to be a factor to develop the high strength.

6. 发明专利

JPH02108800A BUILDING METHOD FOR UNDERGROUND STRUCTURE 失效
公开(公告)号：JPH02108800A
公开(公告)日：1990-04-20
申请号：JP26197988
申请日：1988-10-18
申请人： KAJIMA CORP , ENG SHINKO KYOKAI , KUMAGAI GUMI CO LTD , SHIMIZU CONSTRUCTION CO LTD , TAISEI CORP , CENTRAL RES INST ELECT , HITACHI CONSTRUCTION MACHINERY , FUJITA CORP , KOMATSU MFG CO LTD
发明人： NOMA MASAHARU , YASUKUNI MITSUTOSHI , MIO KOHEI , YAMAMOTO TAKASHI , AOKI KENJI , ISHITANI TADATOSHI
IPC分类号： E02D29/045 , E21D1/00 , E21D13/00 , E21D13/02
摘要： PURPOSE:To successfully deal with the weak point of a conventional construction method by a method wherein a ground is excavated down to a given depth from the upper layer of the central part of a scheduled underground structure to build a vertical shaft, and a space is constructed in a ground from the vertical shaft serving as a starting point by a shield construction method. CONSTITUTION:A shield machine is radially augered gradually downwardly from a vertical shaft 1 to form a tubular shaft part 4 serving as the shaft of a roof R of an underground structure. A bedrock between the adjoining shaft parts 4 is horizontally excavated continuously throughout a range of from a base end on the vertical shaft 1 side to the tip of the shaft to form tubular roof tubes with which the roof R is formed and form the roof part R. After or simultaneously with formation of roof tubes 5, a side wall W is built in the shape of a cylinder vertically downward from the roof tube 5 on the tip side of the shaft part 4, serving as a base. This method enables reduction of the area of the occupied site of a ground and enables suppression of an influence exercised on a ground to a minimum value.

7. 发明专利

JPS6350515B2 失效
公开(公告)号：JPS6350515B2
公开(公告)日：1988-10-11
申请号：JP17554883
申请日：1983-09-22
申请人： KAJIMA CORP
发明人： ISHITANI TADATOSHI , TAKEUCHI TOSHIHIKO
IPC分类号： E21D9/06

8. 发明专利

JPS6088794A ENLARGING SHIELD CONSTRUCTION METHOD 失效
公开(公告)号：JPS6088794A
公开(公告)日：1985-05-18
申请号：JP19672583
申请日：1983-10-20
申请人： KAJIMA CORP
发明人： KIJIMA SHIROU , ISHITANI TADATOSHI , TAKEUCHI TOSHIHIKO
IPC分类号： E21D9/06 , E21D11/04

9. 发明专利

JPS6065895A ENLARGING SHIELD CONSTRUCTION METHOD 失效
公开(公告)号：JPS6065895A
公开(公告)日：1985-04-15
申请号：JP17554783
申请日：1983-09-22
申请人： KAJIMA CORP
发明人： TAKEUCHI TOSHIHIKO , ISHITANI TADATOSHI
IPC分类号： E21D9/06

10. 发明专利

JPS5869928A DRAWING OF SOLID FROM HARDENED CEMENT MATERIAL 失效
公开(公告)号：JPS5869928A
公开(公告)日：1983-04-26
申请号：JP9729782
申请日：1982-06-07
申请人： KAJIMA CORP
发明人： YAMAMOTO TAKASHI , ISHITANI TADATOSHI , HAYAZAKI TSUTOMU , TSUCHIHIRO MICHIO
IPC分类号： E02D9/02
摘要： PURPOSE:To easily draw steel pipes, etc., out of a hardened cement material placed in contact with the surface of the solid material by providing a layer composed mainly of a cement setting retarder and a leaching regulator in advance on the surface of the solid material, e.g., the steel pipe, etc. CONSTITUTION:A layer composed mainly of a cement setting retarder (e.g., an oxycarboxylic acid or its derivative, a polyol complex, etc.) and a leaching regulator (e.g., carboxylmethyl cellulose, polyvinyl alcohol, polyacrylic acid, etc.) is provided on the surface of a stel pipe 2, and then concrete 3 is placed into a formwork 1. Since the leaching regulator gradually dissolves in contact with the concrete to cause the retarder to leach, no hardening of concrete occurs in and near the surface of the steel pipe 2 and thereby the steel pipe 2 can be separated without causing the breakage of the surface layer of the concrete by weak forces.

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