Study on the seismic performance of retrofitted RC frames with RC infill wall mega braces

2021 ◽  
Vol 233 ◽  
pp. 111911
Author(s):  
Shao-Ge Cheng ◽  
Yi-Xiu Zhu ◽  
Wei-Ping Zhang ◽  
Tie-Hua Shi
Keyword(s):  
Seismic Performance ◽  
Infill Wall ◽  
Rc Frames

scholarly journals Seismic performance analysis of multi-story RC frames strengthened with RC infill wall

2019 ◽  
Vol 615 ◽  
pp. 012080
Author(s):  
M Sukrawa ◽  
I G A K Putra ◽  
I A M Budiwati ◽  
I M A K Salain ◽  
G A Susila ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Seismic Performance ◽  
Infill Wall ◽  
Rc Frames

Seismic Performance and Lateral Stability of RC Frames with Vertical Irregular Infill Arrangements

2017 ◽  
Vol 17 (02) ◽  
pp. 1750025 ◽  
Author(s):  
Terry Y. P. Yuen ◽  
J. S. Kuang
Keyword(s):  
Seismic Performance ◽  
Failure Modes ◽  
Dynamic Properties ◽  
Cohesive Crack ◽  
Lateral Stability ◽  
Infill Wall ◽  
Rc Frames ◽  
Infill Panels ◽  
Force Transfer ◽  
Transfer Mechanisms

In this paper, the effects of vertical irregularity of masonry-infill wall arrangements on the seismic performance and lateral stability of reinforced concrete (RC) frames have been investigated using nonlinear response history analysis. Discrete finite element models, which are endowed with a damage-based cohesive crack modeling, were developed for six prototype structures with different arrangements of infill panels. The analysis of failure modes and lateral force transfer mechanisms of infilled frames shows that the arrangement of infill panels can critically affect the dynamic properties and structural stability under seismic excitations. Diagonal continuity, infill ratios, and eccentricity of infill walls play essential roles in the lateral-load and displacement capacities of the structures. The hysteresis behavior, failure modes, and force transfer mechanisms of RC frames with concentric and eccentric arrangements of infill panels are compared and their implications on the seismic resistant design are discussed.

Analysis of Seismic Performance of RC Frames with Centrally Reinforced Columns

2013 ◽  
Vol 671-674 ◽  
pp. 1319-1323
Author(s):  
Zi Xue Lei ◽  
Yu Hang Han ◽  
San Sheng Dong ◽  
Jun Qing Guo
Keyword(s):  
Seismic Performance ◽  
Cross Sections ◽  
Carrying Capacity ◽  
Pushover Analysis ◽  
Seismic Load ◽  
Load Carrying Capacity ◽  
Rc Columns ◽  
Rc Column ◽  
Rc Frames ◽  
Load Carrying

A centrally reinforced column is a new type of RC columns, formed by providing a reinforcement skeleton at the central part of the cross section of an ordinary RC column. Tests have shown that as compared with an ordinary RC column, this type of columns has a higher load carrying capacity and ductility. From the pushover analysis of a frame composed of ordinary RC columns and one consisting of centrally reinforced columns, their seismic performance under seismic load of 9-degree intensity was studied according to Chinese code, including target displacements, story-level displacements, interstory drifts, appearance and development of plastic hinges. The results indicate that although the dimensions of cross sections of columns in the frame with centrally reinforced columns are smaller than those of the ordinary frame, the former still has a higher overall load carrying capacity and seismic performance than the latter.

Seismic Performance of Earthquake-Resilient RC Frames Made with HSTC Beams and Friction Damper Devices

2021 ◽  
pp. 1-27
Author(s):  
Piero Colajanni ◽  
Lidia La Mendola ◽  
Alessia Monaco ◽  
Salvatore Pagnotta
Keyword(s):  
Seismic Performance ◽  
Friction Damper ◽  
Rc Frames

An investigation on behavior of RC frames with non-interacting infill wall

2021 ◽  
Vol 245 ◽  
pp. 112920
Author(s):  
M. Bikçe ◽  
E. Emsen ◽  
M.M. Erdem ◽  
O.F. Bayrak
Keyword(s):  
Infill Wall ◽  
Rc Frames

scholarly journals An Experimental Study on the Strengthening of RC Frames with Soft Storey Irregularities with Different Types of Steel Diagonals

2018 ◽  
Author(s):  
Murat Ozturk ◽  
Tevfik F. Ogutcu
Keyword(s):  
Experimental Study ◽  
Reference Frame ◽  
Behavioral Differences ◽  
Infill Wall ◽  
Loss Of Life ◽  
Soft Storey ◽  
Rc Frames ◽  
Load Carrying ◽  
Made In ◽  
Strengthening Method

When the loss of life and property is considered, it is clear that special precautions must be taken against the earthquakes among the natural disasters. Post-earthquake observations, especially those made in the developing countries, reveal that there are many reasons for the damage and loss of life, not just one. The formation of soft storey irregularity is one of the most important factors among them. In this study, it is aimed to propose an alternative strengthening method to eliminate the adverse effects of the formation of a soft storey irregularity. Four identical frames with two stories and single span were constructed and tested under reverse cyclic loading which simulates the earthquake. The first frame among them was prepared by bonding bricks as an infill wall on two stories and it was considered to be the reference frame. In the 2nd frame, the formation of soft storey irregularity was facilitated by removing the infill wall on the lower story and the behavioral differences were examined. The remaining two frames were strengthened by using steel elements in two different diagonal shapes on the lower story. As a result, the experimental study showed that the strengthening with steel diagonal elements increased the lateral load-carrying capacity of the frame with soft storey behavior by 250% and the energy dissipation by 120% and also provided better results than the reference frame.

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