프리캠버가 적용된 7.5m 무동바리 장스팬 거푸집의 구조성능에 관한 실험적 연구
Experimental Study on Pre-cambered Unshored Deck for 7.5m span structures
강지수(서울시립대학교); 이승재(대성종합건설); 송종욱(㈜목양건축사사무소); 원용호(㈜목양건축사사사무소); 최성모(서울시립대학교)
7권 2호, 7~15쪽
초록
Cap decks used in slim floor system for reducing floor height act as molds for forming floor slabs in structures with a span of up to 6m without temporary supports. When deep decks are employed in a structure with a span of more than 6m, the problem of defection occurs. This study suggests placing tendons at the ends of cap decks in order to create cambers and control defection when preload is applied. Uniformly distributed load was applied by an UTM to the two L/4 points of specimens to observe the deflection of preloaded cap decks. For the test, three 7.5m specimens were fabricated. One of them was a plain cap deck specimen and the others were those with tendons (PC strands or steel bars.
Abstract
Cap decks used in slim floor system for reducing floor height act as molds for forming floor slabs in structures with a span of up to 6m without temporary supports. When deep decks are employed in a structure with a span of more than 6m, the problem of defection occurs. This study suggests placing tendons at the ends of cap decks in order to create cambers and control defection when preload is applied. Uniformly distributed load was applied by an UTM to the two L/4 points of specimens to observe the deflection of preloaded cap decks. For the test, three 7.5m specimens were fabricated. One of them was a plain cap deck specimen and the others were those with tendons (PC strands or steel bars.
- 발행기관:
- 한국복합신소재구조학회
- 분류:
- 복합구조