scholarly journals Seismic Performance Analysis and Reinforcement Suggestion of RC Frame Structures

2017 ◽  
Vol 5 (6) ◽  
pp. 371
Author(s):  
Linli Tan
Keyword(s):  
Performance Analysis ◽  
Seismic Performance ◽  
Frame Structures ◽  
Rc Frame ◽  
Rc Frame Structures

Probabilistic Evaluation of Effects of Column Moment Magnification Factor on Seismic Performance of Reinforced Concrete Frames

2011 ◽  
Vol 243-249 ◽  
pp. 251-257 ◽  
Author(s):  
Ming Ji He ◽  
Chun Yang ◽  
Jian Cai ◽  
Yan Sheng Huang ◽  
Yi Wu
Keyword(s):  
Reinforced Concrete ◽  
Failure Mode ◽  
Seismic Performance ◽  
Seismic Vulnerability ◽  
Failure Modes ◽  
Fragility Curves ◽  
Frame Structures ◽  
Rc Frame ◽  
Magnification Factor ◽  
Rc Frame Structures

Enhancing column flexural capacity is the key measure in seismic capacity design to achieve strong column-weak beam failure mode and determinate the probabilistic relation between column moment magnification factor (CMMF). In the paper the effects of column moment magnification factor on seismic performance of reinforced concrete (RC) frames are evaluated to limit the occurrence probability of column-hinging failure modes within an acceptable tolerance. Monte Carlo simulation methodology is used to calculate the probability of drift demand exceeding drift capacity of two typical frame structures with consideration of major uncertainties. And fragility curves are constructed to obtain the relationship between CMMF and probability of structural damages and assess the seismic vulnerability of RC frame structures. Results show that the seismic performance of RC frame structures can be significantly enhanced by improving CMMF. The CMMF is required to be equal to or greater than 2.0 to achieve acceptable probability of exceedance of column-hinging failure mode.

scholarly journals Seismic Performance Assessments of RC Frame Structures Strengthened by External Precast Wall Panel

2020 ◽  
Vol 10 (5) ◽  
pp. 1749
Author(s):  
Seung-Ho Choi ◽  
Jin-Ha Hwang ◽  
Sun-Jin Han ◽  
Hyo-Eun Joo ◽  
Hyun-Do Yun ◽  
...  
Keyword(s):  
Energy Dissipation ◽  
Seismic Performance ◽  
Precast Concrete ◽  
Frame Structure ◽  
Frame Structures ◽  
Rc Frame ◽  
Analysis Model ◽  
Energy Dissipation Capacity ◽  
Precast Walls ◽  
Rc Frame Structures

In recent years, a variety of strengthening methods have been developed to improve the seismic performance of reinforced concrete (RC) frame structures with non-seismic details. In this regard, this study proposes a new type of seismic strengthening method that compresses prefabricated precast concrete (PC) walls from the outside of a building. In order to verify the proposed method, a RC frame structure strengthened with precast walls was fabricated, and cyclic loading tests were performed. The results showed that specimens strengthened using the proposed method exhibited further improvements in strength, stiffness and energy dissipation capacity, compared to RC frame structures with non-seismic details. In addition, a nonlinear analysis method, capable of considering the flexural compression and shear behaviors of the walls, was suggested to analytically evaluate the structural behavior of the frame structures strengthened by the proposed method. Using this, an analysis model for frame structures strengthened with precast walls was proposed. Through the proposed model, the analysis and test results were compared in relation to stiffness, strength, and energy dissipation capacity. Then, the failure mode of the column was evaluated based on the pushover analysis. In addition, this study proposed a simplified analysis model that considered the placement of longitudinal reinforcements in shear walls.

Seismic design and performance analysis of buckling‐restrained braced RC frame structures

2019 ◽  
Vol 28 (15) ◽  
Author(s):  
Yi Pan ◽  
Renbing An ◽  
Jiulin Bai ◽  
Xunzhang Yan ◽  
Shuangshuang Jin
Keyword(s):  
Performance Analysis ◽  
Seismic Design ◽  
Frame Structures ◽  
Rc Frame ◽  
And Performance ◽  
Rc Frame Structures

Self-centering cable brace with friction devices for enhancing seismic performance of RC frame structures

2020 ◽  
Vol 207 ◽  
pp. 110187 ◽  
Author(s):  
Tong Guo ◽  
Jishuai Wang ◽  
Yongsheng Song ◽  
Weihong Xuan ◽  
Yuzhi Chen
Keyword(s):  
Seismic Performance ◽  
Frame Structures ◽  
Rc Frame ◽  
Rc Frame Structures

Seismic performance of RC-frame structures with GFRP infill panels

2017 ◽  
Vol 160 ◽  
pp. 722-733 ◽  
Author(s):  
Minho Kwon ◽  
Hyunsu Seo ◽  
Jinsup Kim
Keyword(s):  
Seismic Performance ◽  
Frame Structures ◽  
Rc Frame ◽  
Infill Panels ◽  
Rc Frame Structures

scholarly journals Regional Seismic Damage Simulation of Corroded RC Frame Structures: A Case Study of Shenzhen City

2020 ◽  
Vol 10 (14) ◽  
pp. 4818
Author(s):  
Chen Xiong ◽  
Xiangbin Deng ◽  
Yanmei Liang ◽  
Qiangsheng Li ◽  
Jin Huang ◽  
...  
Keyword(s):  
Seismic Performance ◽  
Carrying Capacity ◽  
Seismic Damage ◽  
Frame Structures ◽  
Rc Frame ◽  
Backbone Curve ◽  
Coastal Cities ◽  
Shenzhen City ◽  
Rc Frame Structures ◽  
Damage Simulation

Buildings in coastal cities are susceptible to chloride ion attack and the seismic performance of these buildings can be impaired due to corrosion of reinforcements. In this study, a regional seismic damage simulation method that considers the influence of corrosion-induced seismic performance degradation is proposed. Firstly, the framework of the method is introduced, and the simulation process is presented. Secondly, experimental data of corroded reinforced concrete (RC) components are collected to obtain the reduction rules of component level backbone curve parameters (i.e., initial stiffness, peak carrying capacity, peak displacement, and ultimate carrying capacity). Afterwards, pushover analyses of typical RC frames in different corrosion conditions (i.e., degree of corrosion of components and proportion of corroded components) are conducted to acquire the reduction rules of interstory backbone curve parameters of corroded RC frame structures. Finally, RC frame structures, in Shenzhen city, are simulated using different corrosion scenarios. Simulated results indicate that some buildings along the coastline are affected by airborne chloride-induced corrosion and severe seismic damage can be observed. Moreover, some buildings that are far from the coastline can also experience severe seismic damage due to irregular use of sea sand as constructional material. The proposed method can be used to simulate the seismic performance of corroded RC structures and the outcomes of this study are expected to provide a useful reference for the seismic risk management of coastal cities.

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