Earthquake Response Analysis of the Historic Reinforced Concrete Temple Otaniha Hakodate Betsuin after Seismic Retrofitting with Friction Dampers

2018 ◽  
Vol 13 (1) ◽  
pp. 47-57 ◽  
Author(s):  
Kazutaka Shirai ◽  
Masaru Kikuchi ◽  
Tomoaki Ito ◽  
Ken Ishii
Keyword(s):  
Reinforced Concrete ◽  
Seismic Retrofitting ◽  
Earthquake Response ◽  
Response Analysis ◽  
Friction Dampers ◽  
Earthquake Response Analysis

scholarly journals Earthquake Response Analysis of Tall Reinforced Concrete Chimneys considering Eccentricity

2020 ◽  
Vol 2020 ◽  
pp. 1-21
Author(s):  
Yingchun Jiang ◽  
Tielin Liu ◽  
Yikui Bai
Keyword(s):  
Reinforced Concrete ◽  
Ground Motion ◽  
Cross Sections ◽  
Dynamic Equilibrium ◽  
Earthquake Response ◽  
Response Analysis ◽  
Seismic Control ◽  
Vertical Ground Motion ◽  
Vertical Ground ◽  
Earthquake Response Analysis

A numerical algorithm is presented to analyze earthquake response of tall reinforced concrete (RC) chimneys based on stick multidegree-of-freedom models. The algorithm considers the eccentricity phenomena between spatial discrete nodes and corresponding centroids of investigated lumps. The spatial discrete segments of the chimney are used to construct the investigated lumps. The equations of dynamic equilibrium of the investigated lumps are derived, and the numerical calculation procedure is implemented. Phenomena of eccentricity are studied for 150 m and 210 m RC chimneys. Seismic stresses and effects of vertical ground motion for the two chimneys are also studied. Numerical results show that the tensile and compressive stresses of the seismic control cross sections of the chimneys may increase under the actions of several specific earthquake waves by considering existing eccentricities. The effect of eccentricity on the earthquake responses of tall RC chimney should be considered, and stresses caused by vertical ground motion should not be neglected to obtain accurate earthquake response of chimneys.

Two-Dimensional Nonlinear Earthquake Response Analysis of a Bridge-Foundation-Ground System

2008 ◽  
Vol 24 (2) ◽  
pp. 343-386 ◽  
Author(s):  
Yuyi Zhang ◽  
Joel P. Conte ◽  
Zhaohui Yang ◽  
Ahmed Elgamal ◽  
Jacobo Bielak ◽  
...  
Keyword(s):  
Lateral Spreading ◽  
Soil Liquefaction ◽  
Earthquake Response ◽  
Response Analysis ◽  
Fe Model ◽  
Two Dimensional ◽  
Foundation Soil ◽  
Soil Medium ◽  
Surface Plasticity ◽  
Earthquake Response Analysis

This paper presents a two-dimensional advanced nonlinear FE model of an actual bridge, the Humboldt Bay Middle Channel (HBMC) Bridge, and its response to seismic input motions. This computational model is developed in the new structural analysis software framework OpenSees. The foundation soil is included to incorporate soil-foundation-structure interaction effects. Realistic nonlinear constitutive models for cyclic loading are used for the structural (concrete and reinforcing steel) and soil materials. The materials in the various soil layers are modeled using multi-yield-surface plasticity models incorporating liquefaction effects. Lysmer-type absorbing/transmitting boundaries are employed to avoid spurious wave reflections along the boundaries of the computational soil domain. Both procedures and results of earthquake response analysis are presented. The simulation results indicate that the earthquake response of the bridge is significantly affected by inelastic deformations of the supporting soil medium due to lateral spreading induced by soil liquefaction.

Sign in / Sign up

Export Citation Format

Share Document