Seismic resistance of RC structures using base isolation

2013 ◽  
Vol 2 (3) ◽  
pp. 22-25
Author(s):  
C. Jayaguru ◽  
Keyword(s):  
Base Isolation ◽  
Seismic Resistance ◽  
Rc Structures

scholarly journals Research on Different Applications of SMA in Seismic Resistance of Building Structures

2021 ◽  
Vol 293 ◽  
pp. 02001
Author(s):  
Zhang Zhe
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Shape Memory ◽  
Base Isolation ◽  
Weight Ratio ◽  
Seismic Resistance ◽  
Power Weight ◽  
Building Structures ◽  
Rc Columns ◽  
The Relationship

SMA(Shape memory alloys) are unique materials with many excellent properties, such as excellent wear resistance, corrosion resistance, high power/weight ratio and biocompatibility, high damping, shape memory effect, super elasticity, etc. In civil engineering, scientists try to use the advantages of SMA by making it into different components and they have already made some types of components that are SMA bracing, SMA constrains RC columns, SMA ring springs and base isolation bearing. All of these components can make contributions to seismic resistance, therefore, this article mainly focuses on the the contribution of SMA bracings and SMA constrains RC columns to the seismic resistance of the structure and the relationship between the improvement of their own performance and SMA.

scholarly journals Economic performance analysis of seismic isolation, energy dissipation, and traditional seismic structures

2021 ◽  
Vol 248 ◽  
pp. 01032
Author(s):  
Shu-jiang Jiang ◽  
Shun-zhong Yao ◽  
De-wen Liu
Keyword(s):  
Energy Dissipation ◽  
Seismic Isolation ◽  
Base Isolation ◽  
Seismic Resistance ◽  
Seismic Structure ◽  
Dissipation Structure ◽  
The Government ◽  
New Countryside ◽  
Building Standards ◽  
Seismic Damping

The construction of a new countryside requires a compr hensive improvement in the building standards of villages and towns, and the seismic resistance of buildings in earthquake-prone areas has attracted much attention. Due to the backward economic development of villages and towns, the development of seismic isolation structure and energy dissipation structure is hindered. To build houses with better seismic performance, the economic efficiency of seismic isolation and energy dissipation structures has become a matter of close concern to the local people and the government. This article compares the economic differences between the original seismic structure, the base isolation structure, and the seismic damping structure from the costs incurred during the entire life cycle of the building, and provides economic reference for the new rural seismic isolation building.

Middle-Story Isolated Structural System of High-Rise Building

2009 ◽  
Vol 4 (3) ◽  
pp. 229-238 ◽  
Author(s):  
Yasuhiro Tsuneki ◽  
◽  
Shingo Torii ◽  
Katsuhide Murakami ◽  
Toshiyuki Sueoka ◽  
...  
Keyword(s):  
Architectural Design ◽  
Seismic Isolation ◽  
Base Isolation ◽  
Seismic Resistance ◽  
Structural System ◽  
Layer System ◽  
High Rise ◽  
Isolation Layer ◽  
High Rise Building ◽  
Architectural Planning

For buildings of normal earthquake-resistant construction, it is essential to provide their structural frame with sufficient rigidity and strength horizontally and vertically, ensuring a uniform distribution of rigidity and strength in the plane. To this end, it is typical that those buildings adopt the same type of construction and structural system. On the other hand, in buildings of general base-isolation construction, their upper structure, which is supported by a base isolation layer, undergoes lessened seismic forces and therefore is able to tolerate concentration of rigidity and strength. This makes them available for construction with any types of structural systems, which in turn allows new structural planning realizing a greater freedom in architectural design; the same type of construction and structural system for the upper structure is generally adopted. In contrast, when a high-rise building is provided with an isolation layer in an intermediate level, its upper structure, which is placed above the isolation layer, has high seismic resistance as a seismic isolation structure. And a mass damper effect contributes to decrease in seismic responses in the lower structure, ensuring high seismic resistance of a building. This paper describes the physical properties of a seismic isolation layer system which is built at an middle-story of a building. It also introduce buildings by which potentials for new architectural planning are proposed through the use of this system.

scholarly journals Study on the Effect of Extra Pole Support on Seismic Resistance for Low-Rise RC Structures

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Pengjie Lu ◽  
Guoxin Wang
Keyword(s):  
Rural Areas ◽  
Structural Damage ◽  
Frame Structure ◽  
Seismic Resistance ◽  
Rc Frame ◽  
Rc Structures ◽  
Frame Building ◽  
Rc Frame Structure ◽  
Rc Frame Building ◽  
Almost All

There is a common way to enhance the collapse safety of residential houses using extra tilted poles supporting poor structures from the outside before and/or after earthquakes in seismic regions, especially in rural areas. But, almost all of these supporting measures are still weak and lack of scientific design and evaluation. This study takes a poorly designed two-bay and three-story RC frame building as an object to explore the effect of this kind of support measures on structural seismic resistance by comparing with a standard-designed RC frame structure model as a contrastive case. The results obtained by performance-based methods indicate that extra poles can improve the seismic collapse safety and reduce structural seismic damage of the poorly designed structure (PDS) effectively. The median collapse capacity parameter θ increases from 1.31 g to the range of 1.92∼2.39 g, and SaT1;10% (spectral acceleration at the first-mode period which causes 10% probability of structural collapse) also increases from 0.57 g to the range of 0.75∼1.08 g. Study of dynamic structural damage shows a great damage reduction of PDS under seismic loads, especially SaT1 = 0.2 g. This study proves that this simple measure can improve the seismic resistance of PDS into an acceptable level by taking our suggested practical and efficient supporting schemes.

scholarly journals A decade of progress since the Edgecumbe earthquake

1997 ◽  
Vol 30 (2) ◽  
pp. 174-176 ◽  
Author(s):  
R. D. Jury
Keyword(s):  
Construction Industry ◽  
Seismic Performance ◽  
Base Isolation ◽  
Precast Concrete ◽  
Seismic Resistance ◽  
Existing Buildings ◽  
Analysis Techniques

Notwithstanding the mixed fortunes of the construction industry over the last decade, there has been progress in the development of improvements in methods of providing seismic resistance in buildings. The last 10 years has seen developments in the assessment of existing buildings, confirmation of the seismic performance of structural precast concrete, development of new analysis techniques and the greater use of base isolation in specialised situations.

scholarly journals Earthquake Resisting Techniques on A G+10 Storey Building with the Help of Shear Walls & Bracings, using Software

2019 ◽  
Vol 9 (2) ◽  
pp. 1893-1897
Keyword(s):  
Base Isolation ◽  
Human Life ◽  
Shear Walls ◽  
Seismic Resistance ◽  
Seismic Zone ◽  
Natural Catastrophes ◽  
Seismic Force ◽  
Earthquake Resistant ◽  
Strength And Stiffness ◽  
Column Jacketing

From the beginning of life on Earth it is evident that natural catastrophes cause a lot of destruction to human life and property. One of the major natural phenomena is the Earthquake. Sudden shaking of ground is a difficult challenge to any structure standing on earth. Due to Improper design of the structure without seismic resistance many buildings have collapsed and lives have lost during earthquakes. Different shapes & materials of buildings have been used to achieve the strength required to withstand the earthquake. In modern era, lots of seismic force resisting techniques are being used to make a structure/building earthquake resistant. These techniques include introducing Shear walls, Bracings, base isolation, column jacketing etc. to enhance the structure. In this paper, I present a Comparative analysis of earthquake resisting techniques on a G+10 story building with the help of different types of Shear walls & Bracings, using software. The comparison is done between: an un-Resisting structure, parallel shear walls, L-shaped shear wall, diagonal bracings, X-shaped bracings & Vshaped bracings. The use of shear walls and bracings helps to strengthen then structure to make it more Earthquake resistant. The analysis in done on a G+10 building for seismic zone III as per IS 1893:2002 codal provisions. The software that I have used to carry out this analysis is Staad pro v8. It is found out that shear walls and bracing contribute largely in reducing the deflection by increasing the strength and stiffness of the building. The results of this project can further be used to enhance the seismic strength of buildings using combination of seismic resistance techniques.

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