Seismic Resilience Upgrade of RC Frame Building Using Self-Centering Concrete Walls with Distributed Friction Devices

2017 ◽  
Vol 143 (12) ◽  
pp. 04017160 ◽  
Author(s):  
Tong Guo ◽  
Zhenkuan Xu ◽  
Lianglong Song ◽  
Lei Wang ◽  
Zhiqiang Zhang
Keyword(s):  
Rc Frame ◽  
Concrete Walls ◽  
Frame Building ◽  
Distributed Friction ◽  
Rc Frame Building ◽  
Seismic Resilience

scholarly journals Seismic Performance of Multistorey RC Frame Building With The Soft Storey and Masonry Infill

2021 ◽  
pp. 650-656
Author(s):  
Kugan K ◽  
Mr. Nandha Kumar P ◽  
Premalath J
Keyword(s):  
Time History ◽  
Seismic Loading ◽  
Rc Frame ◽  
Base Shear ◽  
Maximum Displacement ◽  
Soft Storey ◽  
Masonry Infills ◽  
Frame Building ◽  
History Analysis ◽  
Rc Frame Building

In this study, four geometrically similar frames having different configurations of masonry infills, has been investigated. In this article attempts are made to explain the factors that impact the soft storey failure in a building are compared with different type of infill. That is Four models like RC bare frame, RC frame with brick mansonry infill, RC frame with brick infill in all the storeys exept the firstsoft storey, RC frame with inverted V bracing in the soft storey. Time history analysis has been carried out for a G+8 multistoried building to study the soft storey effect at different floor levels using E tabs software. The behavior of RC framed building with soft storey under seismic loading has been observed in terms of maximum displacement ,maximum storey drift, base shear and storey stiffness as considered structure.

scholarly journals Effect of uniform temperature load on design of long reinforced concrete structures without expansion joints

2021 ◽  
Vol 15 (3) ◽  
pp. 68-80
Author(s):  
Pham Thai Hoan ◽  
Nguyen Minh Tuan
Keyword(s):  
Rc Frame ◽  
Uniform Temperature ◽  
Expansion Joints ◽  
Rc Structures ◽  
Frame Building ◽  
Medium Length ◽  
Building Models ◽  
Temperature Load ◽  
Internal Forces ◽  
Rc Frame Building

This study presents an investigation on the design of long reinforced concrete (RC) structures subjected to uniform temperature load by considering three RC frame building models with different lengths of 45 m, 135 m, and 270 m using Etabs. The uniform temperature load is considered being the change from the annual average highest to lowest air temperature at the construction site in the case of unavailable temperature data of concrete. The analysis results indicate that the uniform temperature load mainly influences on the internal forces of RC members at storey 1 and slightly effects on the internal forces of RC members at storey 2. For short-length RC structures, the effect of temperature load can be ignored in the design of RC elements, whereas it must be taken into account in design of slab, beams and some column positions at storey 1 of medium-length and long RC structures without expansion joints. For the present RC frame building models, the required slab reinforcement in long direction increases about 33.4% for medium-length RC structures (135 m) and about 48.2% for long RC structures (270 m) without expansion joints. The required reinforcement for positive moment at mid-span increases from 33.7 to 39.4%, whereas the total required reinforcement for negative moment at the supports of beams increases from 19.4 to 34.9% in long direction of 270 m long RC structures without expansion joints due to uniform temperature load. Column design of long RC structures without expansion joints under uniform temperature load must be concerned, especially for columns in the corners.

scholarly journals Compliance-Based Estimation of Seismic Collapse Risk of an Existing Reinforced Concrete Frame Building

2021 ◽  
Author(s):  
Anastasios Tsiavos ◽  
Pascal Amrein ◽  
Nathan Bender ◽  
Bozidar Stojadinovic
Keyword(s):  
Earthquake Ground Motion ◽  
Rc Frame ◽  
Seismic Code ◽  
Existing Structures ◽  
Frame Building ◽  
Seismic Collapse ◽  
Rc Building ◽  
Hazard Level ◽  
Rc Frame Building ◽  
Code Compliance

Abstract The seismic evaluation of existing structures is based on the determination of the damage likely to occur during the lifetime of these structures due to earthquake ground motion excitation. However, there is not a consensus about the acceptable level of seismic damage, the expected lifetime of these structures, and the seismic hazard level(s) to evaluate the structures at. This paper presents a methodology for the parametric determination of the seismic collapse risk of an existing Reinforced Concrete (RC) frame building based on its seismic code compliance, quantified by a dimensionless metric. This metric, defined as compliance factor, compares the seismic capacity of an existing structure with the seismic demand for a new structure at a predetermined hazard level. The inelastic seismic behavior of four models of the RC frame building of varying compliance was analytically investigated in this study to demonstrate the implementation of the novel methodology. The four models of the RC building were chosen to represent existing RC frame structures, designed and constructed before the introduction of the modern seismic code provisions. These four building models were excited by a group of earthquake ground motion excitations using Incremental Dynamic Analysis (IDA). The collapse probability of the four models of the RC building representing varying values of seismic code compliance was determined for two different locations corresponding to regions of moderate and high seismic hazard, thus laying the basis for the compliance-based estimation of the seismic collapse risk of existing structures.

Seismic response of a non-ductile RC frame building subjected to shake-table excitations

2021 ◽  
Author(s):  
Patricio Quintana Gallo ◽  
Umut Akguzel ◽  
Athol J. Carr ◽  
Stefano Pampanin
Keyword(s):  
Seismic Response ◽  
Shake Table ◽  
Rc Frame ◽  
Frame Building ◽  
Rc Frame Building

scholarly journals Design discussion of Foundation Reinforcement for A School Canteen Building

2020 ◽  
Vol 165 ◽  
pp. 04044
Author(s):  
Ma Xiuping
Keyword(s):  
Rigid Foundation ◽  
Rc Frame ◽  
Strip Foundation ◽  
Isostatic Pressing ◽  
Frame Building ◽  
Longitudinal Strip ◽  
School Canteen ◽  
Rc Frame Building ◽  
Reinforcement Design

This paper took a RC frame building as example whose foundation need to be reinforced for translation and storey addition. Three reinforcement design schemes are raised. Scheme I: Integral foundation consolidation. Scheme II: Restructuring the original foundation into rigid foundation with additional longitudinal strip foundation. Scheme III: Adopting anchor isostatic pressing piles as foundation consolidation. Scheme II should be the chosen one after comparison.

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