scholarly journals PREDICTION OF CONVERGENT-DIVERGENT ACCUMULATION OF DISPLACEMENT AND DYNAMIC RESPONSE OF H-SHAPED STEEL BEAM-COLUMNS SUBJECTED TO HORIZONTAL TWO-DIRECTINAL GROUND MOTION

2009 ◽  
Vol 74 (642) ◽  
pp. 1503-1511
Author(s):  
Yasuhiro UCHIDA ◽  
Jun KAWAGUCHI ◽  
Shosuke MORINO
Author(s):  
Shinji YAMAZAKI ◽  
Susumu MINAMI ◽  
Hiroaki MIMURA ◽  
Kuniaki UDAGAWA ◽  
Masaru YOSHIKAWA ◽  
...  

2013 ◽  
Vol 13 (01) ◽  
pp. 1350010 ◽  
Author(s):  
IOANNIS G. RAFTOYIANNIS ◽  
GEORGE T. MICHALTSOS

Telescopic cranes are usually steel beam systems carrying a load at the tip while comprising at least one constant and one moving part. In this work, an analytical model suitable for the dynamic analysis of telescopic cranes boom is presented. The system considered herein is composed — without losing generality — of two beams. The first one is a jut-out beam on which a variable in time force is moving with constant velocity and the second one is a cantilever with length varying in time that is subjected to its self-weight and a force at the tip also changing with time. As a result, the eigenfrequencies and modal shapes of the second beam are also varying in time. The theoretical formulation is based on a continuum approach employing the modal superposition technique. Various cases of telescopic cranes boom are studied and the analytical results obtained in this work are tabulated in the form of dynamic response diagrams.


2013 ◽  
Vol 368-370 ◽  
pp. 1644-1647
Author(s):  
Zhen Bao Li ◽  
Hai Teng Wang ◽  
Li Fei Liu ◽  
Wen Jing Wang

The ground motion is multidimensional, random and uncertain in directions when earthquakes occur, so dynamic response under oblique seismic action needs to be considered in the structure design. A frame structure with different stiffness in two horizontal directions was analyzed under seismic action with different input angles. The maximum response of beams and columns was obtained. The seismic mechanism of structures under oblique seismic action was discussed.


1987 ◽  
Vol 14 (5) ◽  
pp. 718-718
Author(s):  
N. S. Trahair
Keyword(s):  

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