Analysis on Seismic Energy Response of Reinforced Concrete Frame-Core Wall

2013 ◽  
Vol 671-674 ◽  
pp. 1329-1334
Author(s):  
Kun Li ◽  
Qing Xuan Shi ◽  
Zhi Feng Guo
Keyword(s):  
Reinforced Concrete ◽  
Structural Characteristics ◽  
Great Influence ◽  
Shear Wall ◽  
Input Energy ◽  
Coupling Beams ◽  
Reinforced Concrete Frame ◽  
Hysteretic Energy ◽  
Concrete Frame ◽  
Total Input

Elastio-plastic dynamic analyses of 5 reinforced concrete frame-core wall structures with different structural characteristics were carried out under several sets of ground motions. The earthquake total input energy of the structure under ground motion, and the regularity of the total input energy between hysteretic energy and damping energy were discussed; the distribution of hysteretic energy among shear wall, coupling beams and frames were studied, as well as the distribution of hysteretic energy along different stories. The results show that the hysteretic energy is increased with the peak ground acceleration. The earthquake records with different spectrum characteristics have a great influence on hysteretic energy. Although the total hysteretic energy among different structural members are steady, the distribution of hysteretic energy among shear wall, coupling beams and frames may vary significantly. It is found that the bottom portion of shear walls and coupling beams in middle floors are the predominant energy dissipated area.

A Study on Dissipation of Cumulative Hysteretic Energy in Reinforced Concrete Frame Structures

2010 ◽  
Vol 163-167 ◽  
pp. 4301-4308
Author(s):  
Min Sheng Guan ◽  
Da Jian Han ◽  
Hong Biao Du ◽  
Xin Wang
Keyword(s):  
Reinforced Concrete ◽  
Distribution Pattern ◽  
Ground Motion ◽  
Time History ◽  
Frame Structure ◽  
Input Energy ◽  
Reinforced Concrete Frame ◽  
Hysteretic Energy ◽  
Concrete Frame ◽  
Reinforced Concrete Frame Structures

Earthquake input energy and structural energy dissipation are key indicators to assess the seismic performance of structures. To study the rules of distribution of hysteretic energy within structures, a 6-storey regular reinforced concrete frame structure model is analyzed through elasto-plastic time-history dynamic analysis using the El Centro and Northridge accelerograms. Based on the comparison between numerical results for the earthquake input energy and structural hysteretic energy under the minor, moderate and major earthquakes of Grade 8 and 9, the distribution of the ratio of the storey hysteretic energy to the total hysteretic energy through the height was further studied. It shows that the computed results corresponding to the two earthquake records are in good agreement under different ground motion severity. And the percentage of structural hysteretic energy to input energy is basically stable. The distribution pattern of storey hysteretic energy through the height is that the value of the upper stories is smaller than the value of the lower stories. And the ground motion severity has a minor influence on the distribution pattern when the plasticity of structure develops more sufficiently.

scholarly journals Immune Genetic Algorithm for Optimizing Reinforced-Concrete Frame- Shear Wall Structure

2015 ◽  
Vol 9 (1) ◽  
pp. 602-609
Author(s):  
Zheng Yinrui ◽  
Zhu Jiejiang
Keyword(s):  
Genetic Algorithm ◽  
Reinforced Concrete ◽  
Shear Wall ◽  
Wall Structure ◽  
Reinforced Concrete Frame ◽  
Immune Genetic Algorithm ◽  
Vertical Stiffness ◽  
Concrete Frame ◽  
Wall Structures ◽  
Shift Angle

An immune genetic algorithm (IGA) is proposed to optimize the reinforced concrete (RC) frame-shear wall structures. Compared with the simple genetic algorithm (SGA), this algorithm has adaptive search capabilities for the future knowledge being used in the process of population evolution. Since the concrete grade of floors and the layout of walls are translated to binary codes, the implementation of this algorithm is not affected by the complexity of the structures. With I-typed vaccine, the continuous vertical stiffness of structure is ensured; With II-typed vaccine, the structures conforms to all the specifications which including floor shift angle, floor displacement ratio and period ratio. At the element level, the optimizing results satisfy all the specifications required by the current Chinese Codes. In this way, a computer program is created to get optimum design schemes.

scholarly journals Research on the Design and Detailing of a Re-constructional High-rise uilding Structure Project Reconstruction

2014 ◽  
Vol 8 (1) ◽  
pp. 450-454 ◽  
Author(s):  
Ling Yuhong ◽  
Lin BiaoYi ◽  
Ke Yu ◽  
Chen QingJun
Keyword(s):  
Reinforced Concrete ◽  
Shear Wall ◽  
Wall Structure ◽  
Strip Foundation ◽  
Reinforced Concrete Frame ◽  
Engineering Structures ◽  
Concrete Frame ◽  
High Rise ◽  
Concrete Pile ◽  
Pile Cap

This paper introduced the reconstruction practice and detailing of a high-rise reinforced concrete frame-shear wall structure. To fully utilize the old structure and meet the requirement of the reconstructed structure, certain measures have been put forward. The enlarging of concrete pile cap and adding strip foundation-beam were used to support the new added shear wall. The reconstruction concept detailing of the roof of basement, the enlarging of the beam or column sections and the application of the inclined column are introduced. The whole structure analysis shows that the reconstructed structure is safe enough to meet all the requirement of the designing code and the settlement observation shows that the deformation of the whole structure in gravity is small. The paper shows the design and detailing of the reconstructed engineering is effective and will be valuable to the similar engineering structures.

Risk Analysis of High-Rise Reinforced Concrete Frame-Shear Wall Structure in Progressive Collapse

2013 ◽  
Vol 639-640 ◽  
pp. 957-960
Author(s):  
Li Dong Yu ◽  
Hong Li
Keyword(s):  
Reinforced Concrete ◽  
Progressive Collapse ◽  
Shear Wall ◽  
Wall Structure ◽  
Load Path ◽  
Reinforced Concrete Frame ◽  
Concrete Frame ◽  
High Rise ◽  
Alternate Path Method ◽  
Current Code

The purpose of the this study was to find the influence of local members of high-rise reinforced concrete frame-shear wall structure failed in different position.Referred to the basic requirements against progressive collapse provided by JGJ03-2010,Based on alternate path method ,This paper presents an analysis procedure that made Linear static analysis to a modal of 24-storey frame-shear wall structure designed according to the current code with SAP2000.The results show that once the edge column failed ,the structure will collapse.However,the corner shear wall constitute little threat to the progressive collapse.After the local members failed ,the lower part of the building contribute to the load path and it can results in axial force ruleless in beams,which make against to load bearing if they are tensile forces.The concentrated tensile stress appears around the continuous beam,and it is possible to be broken early after local member failed if close to the failed shear wall.

scholarly journals The effects of Steel Plate Shear Wall on Residual Capacity of Reinforced Concrete Frame under Sequence Earthquakes by Incremental Dynamic Analysis

2021 ◽  
Author(s):  
Hamze Rouhi ◽  
Majid Gholhaki
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Steel Plate ◽  
Shear Wall ◽  
Seismic Sequence ◽  
Reinforced Concrete Frame ◽  
Steel Plate Shear Wall ◽  
Concrete Frame ◽  
Tall Structures ◽  
Residual Capacity

Abstract The residual capacity of a damaged structure after the main earthquake is equal to the smallest spectral acceleration of the first mode, which causes local or general failure during the aftershock. In this research, the effect of steel plate shear wall on residual capacity of the reinforced concrete frame under seismic sequence has been investigated. Based on this, four systems of 4, 8, 12, and 24 stories, which represent short, intermediate, tall, are modeled in finite element software and subject to three sets of single and real seismic sequence, taking into account the damage, the effects of mainshock earthquakes have been analyzed under aftershock earthquakes nonlinear increment dynamic analysis (IDA). The analysis showed that in the real seismic sequence, the residual capacity of a reinforced concrete frame with steel plate shear wall in short and intermediate structures on average 3.6 times and tall structures up to 4.25 times compared to the residual capacity of the reinforced concrete frame without steel plate shear wall. Also, in the real seismic sequence, the residual capacity of the structure decreased with increasing the height of short to intermediate structures and intermediate to tall structures, so that this capacity reduction decreased by an average of 70% in reinforced concrete frame with and without steel plate shear wall.

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