scholarly journals THE EARTHQUAKE RESPONSE CHARACTERISTICS OF BASE-ISOLATED HIGH-RISE BUILDINGS SUBJECT TO SCENARIO EARTHQUAKES IN JAPAN AND THE EFFECTS OF ASPECT RATIO ON THEIR RESPONSES

2011 ◽  
Vol 76 (660) ◽  
pp. 281-290
Author(s):  
Yuichi IKEDA ◽  
Sumio NAGAHASHI
Keyword(s):  
Aspect Ratio ◽  
Earthquake Response ◽  
Response Characteristics ◽  
High Rise ◽  
Scenario Earthquakes

Study of Dynamic Collapse of Single Layer Reticular Domes Subjected to Earthquake Motion and the Estimation of Statically Equivalent Seismic Forces

1997 ◽  
Vol 12 (3-4) ◽  
pp. 191-203 ◽  
Author(s):  
Shiro Kato ◽  
Takashi Ueki ◽  
Yoichi Mukaiyama
Keyword(s):  
Linear Response ◽  
Single Layer ◽  
Earthquake Response ◽  
Response Characteristics ◽  
High Rise ◽  
Earthquake Motion ◽  
Linear Buckling ◽  
Nonlinear Static ◽  
Dynamic Response Characteristics ◽  
Seismic Forces

The present paper investigates the dynamic response characteristics of single layer reticular domes subjected to horizontal earthquake motions from the following view points: (1) how to estimate the statically equivalent seismic forces applied to domes both for high rise and low rise; and (2) how to estimate the collapse accelerations under which the domes collapse dynamically. For these purposes, linear response analyses, linear buckling analyses, geometrically and materially nonlinear static analyses and geometrically and materially nonlinear earthquake response analyses are performed. Based on the results, the collapse accelerations are expressed as a function of the safety factor for domes under self weight. The expression for the collapse accelerations leads to an approximate measure by which structural designers may balance the static resistant capacity under self weight and the dynamic resistant capacity under earthquake motions.

scholarly journals Finding Critical Element in the Progressive Collapse of RC Structures Using Sensitivity Analysis

2018 ◽  
Vol 4 (12) ◽  
pp. 3038
Author(s):  
Ahmad Farahani ◽  
Ali Kheyroddin ◽  
Mohammad Kazem Sharbatdar
Keyword(s):  
Sensitivity Analysis ◽  
Aspect Ratio ◽  
High Aspect Ratio ◽  
Progressive Collapse ◽  
Critical Element ◽  
Reinforced Concrete Structures ◽  
Structural Element ◽  
Rc Structures ◽  
Critical Elements ◽  
High Rise

Failure of some elements in the structure can play triggering role for beginning of collapse progression. The critical element is the structural element that when it fails, leads to progressive collapse. To find the critical element of the structure, sensitivity analysis should be done. But there are not specific structural criteria for using in sensitivity analysis. In this paper following GSA, UFC 4-023-03 and ASCE guidelines, sensitivity analysis has been modified and applied to find the critical element of a major number of reinforced concrete structures. 1080 3D nonlinear pushdown analyses were done and the results showed that the place of the critical elements differs in different stories and different plan shapes of high rise structures. In the structures with high aspect ratio in height, the critical element of the whole structure is located in the story of 2/3 height of the structure. When the aspect ratio of the structure in plan increases, sensitivity of the columns in the long dimension of the structure become closer to each other.

scholarly journals RESPONSE CHARACTERISTICS TO WINDS AND WAVES ABOUT FLOATING STRUCTURE SUPPORTING HIGH RISE BUILDING

2018 ◽  
Vol 74 (2) ◽  
pp. I_958-I_963
Author(s):  
Masanobu HASEBE ◽  
Masaki TAKEUCHI ◽  
Shuhei ONO ◽  
Ikuo YOSHIDA ◽  
Kenji SHIMADA ◽  
...  
Keyword(s):  
Floating Structure ◽  
Response Characteristics ◽  
High Rise ◽  
High Rise Building

scholarly journals EARTHQUAKE RESPONSE CHARACTERISTICS OF AN EXISTING R/C BUILDING RETROFITTED WITH FRICTION DAMPERS

2008 ◽  
Vol 73 (628) ◽  
pp. 947-955 ◽  
Author(s):  
Hajime YOKOUCHI ◽  
Keiji KITAJIMA ◽  
Mitsukazu NAKANISHI ◽  
Hiromi ADACHI ◽  
Hiroyuki AOYAMA
Keyword(s):  
Earthquake Response ◽  
Friction Dampers ◽  
Response Characteristics
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