CFT SRC JOINT STRUCTURE OF SRC COLUMN AND STEEL BEAM USING CFT STRUCTURE AND REVERSE CONSTRUCTION METHOD OF UNDERGROUND BUILDING USING THE SAME

• Main Authors: PARK, SEONG WOON, PARK, DAE WON, SEO, JUNG HO
• Format: Patent
• Language: English; Korean
• Published: 27.04.2023
• Subjects: BUILDING; BUILDING MATERIALS; CEILINGS; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FLOORS; FOUNDATIONS; GENERAL BUILDING CONSTRUCTIONS; HYDRAULIC ENGINEERING; INSULATION OR OTHER PROTECTION OF BUILDINGS; ROOFS; SOIL SHIFTING; STRUCTURAL ELEMENTS; UNDERGROUND OR UNDERWATER STRUCTURES; WALLS, e.g. PARTITIONS

The present invention relates to a structure for moment joining a steel beam to a column of an SRC structure using a CFT structure. The SRC column comprises: a CFT steel pipe; an inner concrete unit filled at the CFT steel pipe interior; and an outer concrete unit poured at the exterior of the CFT steel pipe. A connection pipe wherein the interior is hollow is installed between opposing surfaces of the interior of the CFT steel pipe. Additionally, a through hole is provided on each side so that the interior of the connection pipe communicates with the exterior. Additionally, a connection plate is inserted into and installed to the interior of the connection pipe. Both end parts of the connection plate pass through holes on each surface and are integrated into an upper part flange of each steel beam joined to both side surfaces of the CFT steel pipe. Provided are a joint structure of the SRC column and the steel beam using the CFT structure which can improve efficiency of a structural performance while improving efficiency of manufacturability and constructability, and a counter-pounding construction method for an underground building using the same. 본 발명은 CFT구조를 이용하여 SRC구조의 기둥에 철골보를 모멘트 접합시키기 위한 구조에 관한 것으로서, SRC기둥을 CFT강관과 상기 CFT강관 내부에 충진되는 내콘크리트부와 상기 CFT강관 외부에 타설되는 외콘크리트부로 구성시키되, 상기 CFT강관의 내부에 상호 대향하는 면 사이에 내부가 빈 연결관을 설치하고, 상기 연결관의 내부가 외부와 연통하도록 각 면에 관통공을 구비시키며, 상기 연결관의 내부에 연결플레이트를 삽입 설치하는 것으로서, 상기 연결플레이트의 양 단부는 각 면의 관통공을 통과하여 CFT강관의 양 측면에 접합되는 각 철골보의 상부플랜지에 일체화시키는 것을 특징으로 한다.