http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : W. H. Wan Badaruzzaman (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
-
Flexural performance of cold-formed square CFST beams strengthened with internal stiffeners
Ahmed W. Al-Zand,W.H. Wan Badaruzzaman,Mustafa M. Ali,Qahtan A. Hasan,Marwan S. Al-Shaikhli 국제구조공학회 2020 Steel and Composite Structures, An International J Vol.34 No.1
The tube outward local buckling of Concrete-Filled Steel Tube (CFST) beam under high compression stress is still considered a critical problem, especially for steel tubes with a slender section compared to semi-compact and compact sections. In this study, the flexural performance of stiffened slender cold-formed square tube beams filled with normal concrete was investigated. Fourteen (14) simply supported CFST specimens were tested under static bending loads, stiffened with different shapes and numbers of steel stiffeners that were provided at the inner sides of the tubes. Additional finite element (FE) CFST models were developed to further investigate the influence of using internal stiffeners with varied thickness. The results of tests and FE analyses indicated that the onset of local buckling, that occurs at the top half of the stiffened CFST beam’s cross-section at mid-span was substantially restricted to a smaller region. Generally, it was also observed that, due to increased steel area provided by the stiffeners, the bending capacity, flexural stiffness and energy absorption index of the stiffened beams were significantly improved. The average bending capacity and the initial flexural stiffness of the stiffened specimens for the various shapes, single stiffener situations have increased of about 25% and 39%, respectively. These improvements went up to 45% and 60%, for the double stiffeners situations. Moreover, the bending capacity and the flexural stiffness values obtained from the experimental tests and FE analyses validated well with the values computed from equations of the existing standards.
-
Non-linear Analysis of Membrane Action Effect in Profiled Steel Sheeting Dry Board Flooring System
Mahmood Seraji,W. H. Wan Badaruzzaman,S.A. Osman 한국강구조학회 2014 International Journal of Steel Structures Vol.14 No.2
This study highlights the effect of membrane action in improving load carrying capacity of Profiled Steel Sheeting Dry Board(PSSDB) floor system. PSSDB system is a lightweight composite structural system composed of profiled steel sheeting anddry board, attached together by self-drilling and self-tapping screws. Many literatures have reported that restricting conventionalslabs, such as reinforced concrete slab, at the supports against translation and/or rotation while it is subjected to vertical loadingdevelops the compressive membrane action in the slab. The development of this phenomenon is considered in the PSSDBsystem with concrete infill for continuous and practical spans, with and without topping concrete. Previous authors’experimentally verified non-linear finite element model for the PSSDB floor without topping was extended to parametricallypredict the effect of different boundary conditions on the performance of the system for practical applications. It was revealedthat preventing the in-plane movement of the slab ends improves the flexural rigidities of the slab up to more than three timeswhen considering central deflection of serviceability limit state. This was observed when the deflection limit load of the fixedboth end supports model was compared to the pin-roller support model. Moreover, the topping concrete enhances theapplicability of the system in longer span and the developed compressive membrane action dramatically boosts the loadcarrying capacity of the slab with restricted translation and/or rotation of the slab ends.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
