Abstract:
The method is realized in the following steps of piling a steel pipe (1) which has an spiral wing (2) formed at the outer surface of its lower end and a mounting groove (3) for a wing bit (4) inserted inside of the lower end; drawing the wing bit out after disassembling the auger and detaching the wing bit by means of counter-rotating and lowering the pipe with the wing bit; and piling steel angles (5) between adjacent two steel pipes, each steel angle attaching a small steel pipe (7) at its inside angle.
Abstract:
본 발명은 강관과 앵들을 줄줄이 설치하여 지중에 주열상 흙막이 벽을 구축하는 PAW(Pipe Angle Wall)공법에 관한 것으로서, 하단 외면에 확공용 돌출나선과 내면에 윙비트 장착용 경사홈을 형성한 강관의 하단에 윙비트를 장착하여 워터제트와 오거의 중량 및 회전력등을 병용하여 강관을 선단천공압입하고, 여기서 여굴한 다음에 강관을 역회전 인발시켜 윙비트를 하강 탈착시키고, 이어서 강관에서 오거를 해체한 후에 윙비트를 제거하며, 상기 광관주열의 각 강관 사이에 앵글을 압입하고 이 앵글의 내각면에다 소형강관을 부착하여 강관 주열식 흙막이를 형성하는 공법으로서, 사력질과 경질지반에도 두루 활용할 수 있는 공법이며, 지하구축물 축조후 강관주열식 흙막이(PAW) 일체를 회수하여 재활용하는 것으로 강관회수전 관통된 강과내부에 모래를 충 진, 인발하면 지중내의 공극을 완전히 메꾸게 되므로 주변지반의 침하현상에 기인하는 지반변동도 효과적으로 방지할 수 있는 신규의 강관주열식 흙막이 공법이다.
Abstract:
A grip pad for weight training is provided to be used and carried conveniently, to prevent it from getting wet when a user uses the grip pad, to give good gripping feelings always and to be used without washing. A grip pad for weight training includes a pad(6) having an inner surface portion(2) and an outer surface portion(4), and a finger insertion portion(8). The inner surface portion comes into contact with a gripping portion like a handle. The outer surface portion comes into contact with a user's palm. The finger insertion portion is formed on the outer surface portion of the pad to fix the pad in a direction of the palm. The finger insertion portion is disposed to be biased in one direction from the center portion of the pad to make the pad positioned on a user's palm portion. Protrusions(10) are formed on the outer surface portion.
Abstract:
PURPOSE: An oil hydraulic jack for a lifting separative slab wall casting gang form using a reinforcing rod attached deck plate is provided to easily pull a gang form though a thickness of a wall is varied. CONSTITUTION: An oil hydraulic jack(90) for lifting a gang form comprises: an oil hydraulic jack frame(91) to form a first hollow(96) to be filled oil(100) and a second hollow(97); a first cylinder(92) slid inside the second hollow by inserting therein, to form a third hollow(98) and protruded on the hydraulic jack frame; a second cylinder slid inside the third hollow by inserting therein and protruded on the first cylinder; an oil hydraulic cylinder(94) to form a fourth hollow(99) to be reciprocated a piston(95) and to pressurize the oil in the second hollow and the fourth hollow through the reciprocation of the piston by connecting the fourth hollow with the first hollow and the second hollow; and a changing portion to change the rotational motion of an electromotor to the rectilinear reciprocating motion by connecting the electromotor with the piston. Thereby, a building is economically and quickly constructed with the gang form in an inner wall.
Abstract:
PURPOSE: A method for constructing an underground continuous wall is provided to construct the underground continuous wall by changing thickness thereof for maximizing efficiency of a space. CONSTITUTION: An iron net(10) is inserted on a slurry wall to mount a form. The form of a square shape in opened on upper and lower portions, and a metal lath is installed on the lower portion of the form passing stable fluid not a concrete. A circular spiral duct steel pipe(13) in established in the iron net to insert an H-pile after penetrating lower end portion ground of the slurry wall through the spiral duct steel pipe. A concrete bulb is formed on the lower portion of a penetrated hole by injecting cement milk via compression air injecting pipe. Thickness of the underground slurry wall is controlled according to stress applied to the underground slurry wall to expand underground space.