A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Ground drilling method for foundation reinforcement
The present invention relates to an expansion and excavation method of the lower surface of an existing foundation for foundation reinforcement. When a borehole is formed in the ground and an existing foundation for foundation reinforcement, an expansion excavation groove which is expanded more than a borehole bored in the existing foundation is formed on the lower surface of the existing foundation in order to enable an anchoring device, such as a key plate used for foundation reinforcement, to be anchored to the lower surface of the foundation by being rotated in the expansion excavation groove in the lower part of the foundation via the borehole, thereby securing stability by minimizing damage to the foundation. According to one advisable embodiment of the present invention, the method includes the following steps of: (a) boring a hole in the core of a foundation, and boring a hole in the ground in the lower part of the foundation to form a borehole; (b) combining boring equipment with an expansion-excavation machine comprising a rod of a predetermined length, a coupler formed in the upper end part of the rod, an excavation head part formed eccentrically from the lower end part of the rod to one side, and a plurality of excavation bits arranged and distributed on the outer surface of the excavation head part, so as to allow the excavation head part to be embedded in the borehole in order for the head part to be located in the lower part of the foundation, and then, expand and excavate the lower surface of the foundation to form an expansion excavation groove; and (c) washing the lower surface of the foundation with high-pressure water.
본 발명은 기초보강을 위하여 기존 기초와 지반에 천공홀 형성시에 기존 기초의 하부면에 기존 기초에 천공된 천공홀보다 확대된 확대 굴착홈을 형성하도록 하여, 기초 보강을 위해 사용되는 키 플레이트 등의 정착장치가 천공홀을 지나 기초의 하부의 확대 굴착홈에서 회전하여 기초 하부면에 정착되도록 하여, 기초의 손상을 최소화하여 안정성을 확보하도록 하는 기초보강을 위한 기존 기초 하부면의 확대굴착 방법에 관한 것이다. 본 발명의 바람직한 일 실시예는 (a) 기초의 코아를 천공하고, 기초 하부의 지반을 천공하여 천공홀을 형성하는 단계; (b) 일정 길이의 로드와, 로드의 상단부에 구성되는 커플러와, 로드의 하단부에서 일측으로 편심되어 구성되는 굴착 헤드부와, 굴착 헤드부의 외측면에 다수로 배열 분포되어 있는 굴착비트를 포함하여 구성되는 확대굴착 장치를 천공장비에 체결하여 굴착 헤드부가 기초 하부에 위치하도록 천공홀에 근입한 후, 기초의 하부면을 확대굴착하여 확대 굴착홈을 형성하는 단계; 및 (c) 기초 하부면을 고압 물세척 하는 단계;를 포함하여 이루어진다.
Ground drilling method for foundation reinforcement
The present invention relates to an expansion and excavation method of the lower surface of an existing foundation for foundation reinforcement. When a borehole is formed in the ground and an existing foundation for foundation reinforcement, an expansion excavation groove which is expanded more than a borehole bored in the existing foundation is formed on the lower surface of the existing foundation in order to enable an anchoring device, such as a key plate used for foundation reinforcement, to be anchored to the lower surface of the foundation by being rotated in the expansion excavation groove in the lower part of the foundation via the borehole, thereby securing stability by minimizing damage to the foundation. According to one advisable embodiment of the present invention, the method includes the following steps of: (a) boring a hole in the core of a foundation, and boring a hole in the ground in the lower part of the foundation to form a borehole; (b) combining boring equipment with an expansion-excavation machine comprising a rod of a predetermined length, a coupler formed in the upper end part of the rod, an excavation head part formed eccentrically from the lower end part of the rod to one side, and a plurality of excavation bits arranged and distributed on the outer surface of the excavation head part, so as to allow the excavation head part to be embedded in the borehole in order for the head part to be located in the lower part of the foundation, and then, expand and excavate the lower surface of the foundation to form an expansion excavation groove; and (c) washing the lower surface of the foundation with high-pressure water.
본 발명은 기초보강을 위하여 기존 기초와 지반에 천공홀 형성시에 기존 기초의 하부면에 기존 기초에 천공된 천공홀보다 확대된 확대 굴착홈을 형성하도록 하여, 기초 보강을 위해 사용되는 키 플레이트 등의 정착장치가 천공홀을 지나 기초의 하부의 확대 굴착홈에서 회전하여 기초 하부면에 정착되도록 하여, 기초의 손상을 최소화하여 안정성을 확보하도록 하는 기초보강을 위한 기존 기초 하부면의 확대굴착 방법에 관한 것이다. 본 발명의 바람직한 일 실시예는 (a) 기초의 코아를 천공하고, 기초 하부의 지반을 천공하여 천공홀을 형성하는 단계; (b) 일정 길이의 로드와, 로드의 상단부에 구성되는 커플러와, 로드의 하단부에서 일측으로 편심되어 구성되는 굴착 헤드부와, 굴착 헤드부의 외측면에 다수로 배열 분포되어 있는 굴착비트를 포함하여 구성되는 확대굴착 장치를 천공장비에 체결하여 굴착 헤드부가 기초 하부에 위치하도록 천공홀에 근입한 후, 기초의 하부면을 확대굴착하여 확대 굴착홈을 형성하는 단계; 및 (c) 기초 하부면을 고압 물세척 하는 단계;를 포함하여 이루어진다.
Ground drilling method for foundation reinforcement
기초보강을 위한 기존 기초 하부면의 확대굴착 방법
HWANG PAN YONG (author)
2020-03-23
Patent
Electronic Resource
Korean
IPC:
E02D
FOUNDATIONS
,
Gründungen
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