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 : Federico Gusella (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Pinching in Steel Rack Joints: Numerical Modelling and Eff ects on Structural Response
Federico Gusella,Maurizio Orlando,Paolo Spinelli 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.1
The structural behaviour of beam-to-column joints plays a key role in the seismic response of frame structures. Regarding to steel storage pallet racks, experimental tests have highlighted that the hysteresis loop of their joints is characterized by the pinching, with the consequence of a reduction of the dissipated hysteretic energy and load carrying capacity. In this paper the authors propose a simplifi ed numerical pinching model capable to simulate the mechanical response of beam-tocolumn joints under cyclic loads. To develop and check this model, several comparisons are performed with both literature data and experimental results of laboratory tests. The proposed model is characterised by three links placed in parallel: two “composed links” describe the non-linear bending moment-rotation curve of the joint, and a linear elastic link transfers the axial and shear force from the beam to the column. The model is appropriate for predicting the down-aisle seismic response of rack systems and it can be easily implemented in commercial software packages, commonly used for non-linear seismic vulnerability analyses. Moreover, features of the model can be estimated from a few structural data and it does not require to perform expensive cyclic experimental tests. For a deeper understanding of the eff ects of pinching in the seismic response and to highlight the potentiality of the proposed model a case-study example is also considered. The case-study concerns a rack system, whose beam-to-column joints are modelled using two numerical approaches which diff er in the deterioration of the rotational stiff ness of joints. Non-linear dynamic analyses, with simulated ground acceleration time-histories, have been carried.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
