Experimental Studies on a Novel Structural Detailing of RC Frames to Resist Earthquake and Progressive Collapse

2017 ◽  
Author(s):  
Kaiqi Lin ◽  
Donglian Gu ◽  
Xinzheng Lu ◽  
Yi Li
Keyword(s):  
Progressive Collapse ◽  
Experimental Studies ◽  
Rc Frames ◽  
Structural Detailing

A novel structural detailing for the improvement of seismic and progressive collapse performances of RC frames

2019 ◽  
Vol 48 (13) ◽  
pp. 1451-1470 ◽  
Author(s):  
Kaiqi Lin ◽  
Xinzheng Lu ◽  
Yi Li ◽  
Weidong Zhuo ◽  
Hong Guan
Keyword(s):  
Progressive Collapse ◽  
Rc Frames ◽  
Structural Detailing

scholarly journals Effect of Uncertainties in Material and Structural Detailing on the Seismic Vulnerability of RC Frames Considering Construction Quality Defects

2020 ◽  
Vol 10 (24) ◽  
pp. 8832
Author(s):  
Siyun Kim ◽  
Taehwan Moon ◽  
Sung Jig Kim
Keyword(s):  
Material Properties ◽  
Seismic Vulnerability ◽  
Concrete Strength ◽  
Transverse Reinforcement ◽  
Construction Quality ◽  
Uncertain Variables ◽  
Rc Frames ◽  
Structural Detailing ◽  
Global And Local ◽  
The Impact

This paper evaluates the effect of construction quality defects on the seismic vulnerability of reinforced concrete (RC) frames. The variability in the construction quality of material properties and structural detailing is considered to assess the effect on the seismic behavior of RC frames. Concrete strength and yield strength of the reinforcement are selected as uncertain variables for the material properties, while the variabilities in the longitudinal reinforcement ratio and the volumetric ratio of transverse reinforcement are employed for structural detailing. Taking into account the selected construction quality uncertainties, the sensitivity analysis of the seismic vulnerability of the RC frames is performed and the impact of significant parameters is assessed at the global and local levels. This extensive analytical study reveals that the seismic vulnerability of the selected RC frame is particularly sensitive to concrete strength and the volumetric ratio of transverse reinforcement.

Assessment of progressive collapse potential of special moment resisting RC frames – Experimental and FE study

2019 ◽  
Vol 105 ◽  
pp. 896-918 ◽  
Author(s):  
Hussein M. Elsanadedy ◽  
Yousef A. Al-Salloum ◽  
Tarek H. Almusallam ◽  
Tuan Ngo ◽  
Husain Abbas
Keyword(s):  
Progressive Collapse ◽  
Collapse Potential ◽  
Rc Frames ◽  
Moment Resisting

Optimization and Suggestions of Design for RC Frames with Special-Shaped Columns Based on Chinese Specification

2013 ◽  
Vol 351-352 ◽  
pp. 3-6
Author(s):  
Ming Dong Wang ◽  
Zheng Yin Ni
Keyword(s):  
Progressive Collapse ◽  
Seismic Energy ◽  
Shear Wall ◽  
Special Care ◽  
Wall Structure ◽  
Cantilever Beams ◽  
Concept Design ◽  
High Rise ◽  
Rc Frames

To optimize the design of RC frames with special-shaped columns, some special care should be given to the design of this type of structure. Designers should attach great importance to concept design by considering the structure as a whole to assimilate seismic energy. Ductility has to be guaranteed both for the structure and for the members. In high-rise buildings, frame-shear wall structure is preferred. Safety of L-shaped Corner columns is to be improved or otherwise cantilever beams can be designed to prevent progressive collapse.

Using of Plastic Hinges in the Calculation of Buildings against Progressive Collapse under Fire Exposure

2018 ◽  
Vol 878 ◽  
pp. 115-120
Author(s):  
Levon Avetisyan
Keyword(s):  
Reinforced Concrete ◽  
Progressive Collapse ◽  
Experimental Studies ◽  
Fire Exposure ◽  
Reinforced Concrete Frame ◽  
Dynamic Calculation ◽  
Plastic Hinges ◽  
Concrete Frame ◽  
In Fire ◽  
Concrete Elements

This article presents a study of the strength of a 25-storey reinforced concrete frame against progressive collapse in fire conditions. Taking into account the angles of disclosure of plastic hinges as norming for the strength of reinforced concrete elements, a computer technology program has been developed and included in PR Wolfram Mathematica 10 for the dynamic calculation of compressed reinforced concrete elements under fire exposure on the basis of the conducted experimental studies. Dynamic calculation of the strength of eccentrically compressed reinforced concrete columns was carried out, with operation in normal conditions and under high temperatures. The diagram «moment-curvature» and the graph of the change of the static and dynamic strength of the column depending on the temperature were developed. Nonlinear dynamic analysis of a 25-storey reinforced concrete frame was conducted, taking into account the changes of the dynamic characteristics of reinforced concrete elements in fire and, the estimation of resistance of the frame was given.

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