“Seismic Analysis of Multi-Storey Buildings with Composite Columns and RCC Beams” (original) (raw)
Related papers
IRJET, 2020
Composite structures render the eccentric possibility of ergonomic design of members and material in the case of vertical structures. Reinforced concrete structures are the traditionally preferred construction practice in most of the developing countries. A coalesced structural property of concrete and steel is achieved while using composite structures. Degrees of freedom plays a crucial role in enabling concurrent optimization in all aspects resulting in various ascendancies such as reduced structural weight, paramount dynamic stability, fire resistance, profitability, and, so on. This paper covers the review on the comparison of seismic behavior of composite columns with RCC columns under various physical conditions.
Examining Seismic Response for Rigid Building Frame Having Composite Column
International Journal for Research in Applied Science & Engineering Technology (IJRASET), 2022
Concrete filled steel tubes are generally used in Beams, Columns, Piers and caissons for deep foundations. The steel tube functions as the formwork for casting the concrete and hence, construction cost is reduced. The prime focus of the present work is to study the behavior of RCC structure under the effect of seismic loads provided with composite columns. This research study comprises of seismic analysis with the design of rigid frame with Reinforced Concrete column, Concrete encased steel and steel tube encasing concrete columns. These cases are designed based on IS 1893:2016 using ETABS software. The result shows that steel encased concrete is performing better than conventional column. The construction practices is the only difficulty arises in such of composite column.
Seismic performance of steel-reinforced concrete composite columns of older and modern construction
2017
Existing concrete buildings lacking seismic details are well known to cause most losses during earthquakes so there is no wonder they are nicknamed killer buildings. In every new earthquake we see more evidence of their vulnerability. Ordinary building are taking the most focus of researchers from all over the world because of the majority of building are reinforced concrete. But one of the most widely used structure system contains steel reinforced concrete (SRC) composite columns. This type has been used since early of 1950 and nowadays most high rise or non-prismatic buildings are built using SRC composite columns. This Experimental study presented addresses the seismic performance of (SRC) composite columns experiencing shear and flexural failures using different concrete grades and confinement details to mimic both existing buildings with old construction details and modern buildings designed and built according to modern codes and construction practices. Test specimens represent exterior columns modeled based on a typical seismic design of a 30-story prototype new core wall-frame tall building and a 20-story prototype gravity existing building. Test parameters considered in this study are target failure mode, axial load ratio, percentage of longitudinal steel, structural steel section, concrete grade, and the transverse reinforcement volumetric ratio. Tests aim to characterize and compare the cyclic response of SRC columns with old and modern construction details. In particular, shear capacity, flexural capacity, residual axial capacity, deformation capacity and engineering demand parameters under different test variables are sought. Backbone curves for numerical simulation of seismic performance of SRC columns are presented. There are fourteen tested specimens divided to three groups; four specimens were tested as pilot, three specimens were tested representing modern building flexure deficient column and seven specimens for old building: five shear deficient specimens and two flexure deficient specimens. This work came out with many conclusions and recommendations for old and modern buildings to overcome the deficiency of SRC composite column. Retrofitting shear deficient SRC columns under high axial loads (>40%) and flexure deficient columns under high axial loads (higher than the balanced load, i.e. compression controlled failure) experiencing moderate to strong ground shaking seems inevitable.
Ernst & Sohn ce/papers 6 , 2023
Usable/rentable floor areas are crucial for the building owners in reinforced concrete (RC) tall buildings. To address this issue, concrete-encased (CE) or concrete-filled (CF) composite columns are proposed as alternative vertical load carrying elements by providing the required strength and ductility, but with smaller dimensions. Comparing the performance of columns with different configurations can be done using moment (M)-axial load (N) interaction curves. This paper summarizes the approaches proposed by Eurocode 4 and AISC 360-16 for both types of composite columns, presenting simplified and true curves for a specific class of sections. Two case studies involving hybrid RC tall buildings in Istanbul, which utilized composite columns, are presented along with a comparison with steel-concrete composite and RC solutions. Numerical results indicate that employing steel-concrete composite columns resulted in approximately 24% reduction in total cross-sectional areas for one of the case studies, leading to increased usable/rentable areas. Additionally, concrete-encased and concrete-filled composite columns exhibited similar performance in terms of axial load-moment capacities. The impact of longitudinal rebar ratios is also investigated, revealing that the AISC 360-16 approach yields smaller bending moments and compression capacities compared to Eurocode 4 due to the significant strength reduction factor considered in calculating the concrete contribution in composite sections.
Comparison of Seismic Behavior of a Structure with Composite and Conventional Columns
2015
An extensive study has been carried out on the behavior of composite column in a structure. In composite column construction steel and concrete are united in such a manner that the advantages of the materials are employed in a efficient manner. By bonding and friction between steel and composite material these materials will accept the external loading in composite columns. In this study comparison of composite and conventional structure is carried out. Just varying the design of column i.e., by using composite and conventional column and keeping all other structural members same for both the structures. Composite column design is carried out according to Euro code 4 and conventional column design is by IS 456-2000. The buildings are taken to be true to be placed in III seismic zone. Seismic design is followed by IS 1893-2002. There are many different types of composite column from those we have taken concrete encased composite column for our analysis. Concrete encasement would incr...
Seismic Behavior Analysis of Composite Buildings with Respect to RCC Buildings
Journal of the Institute of Engineering, 2019
Steel concrete composite construction has gained wide acceptance worldwide as an alternative to pure steel and pure concrete construction. The use of steel in construction industry is very low in Nepal compared to many developing countries. There is a great potential for increasing the volume of steel in construction, especially in the current development needs. Not using steel as an alternative construction material and not using it where it is economical is a heavy loss for the country. Use of composite material is of particular interest, due to its significant potential in improving the overall performance through rather modest changes in manufacturing and constructional technologies. Steel concrete composite construction means the concrete slab is connected to the composite beam with the help of shear connectors so that they act as a single unit. In the present work, steel concrete composite (both full and half composite) with RCC options are considered for comparative study of seismic behavior of 10 multistoried commercial buildings (4-storied, 5-storied, 6-storied, 7-storied, 8-storied, 9-storied, 10-storied, 12-storied, 16-storied and 20-storied which is situated in earthquake zone V and for earthquake loading, the provisions of IS:1893(Part1)-2002 is considered. For modeling of composite and RCC structures, SAP2000 software is used. Steel-concrete composite construction system is an efficient, economical and innovative method for seismic resistance of multi storied buildings. Equivalent static method of seismic analysis is used in the analysis of models. Comparison of parameters like time period, axial force, shear force, bending moment, deflection, storey drifts, base shear, storey stiffness is done for full composite(beam-column both composite), half composite(column composite) and RCC structures. The results are compared and found that composite structure is better in several aspects.
Comparative Seismic Behaviour Study of Special Shaped Column Framed Reinforced Structure
International Journal for Research in Applied Science and Engineering Technology IJRASET, 2020
The objective of this study is in order to improve the performance of RCC framed Structure with rectangular columns with Different Shaped (Circular, Rectangle, T-Shape & I-Shape) Column under the Lateral Load Condition. G+9, 30m height of building analysed with different shape of column with equivalent cross section area of different shaped column. Building analysed using Response spectrum method under the Earthquake Zone IV (As per Indian Standard). The maximum story drift, Base shear & other parameter are considered in this paper. Analysis & Calculation done by using STAAD Pro V8i software. The results indicate the comparative Study and analysis of regular shaped and other several shaped column cross sections
Design Criteria For Reinforced Concrete Columns Under Seismic Loading
2013
After the devastating Bhuj earthquake, the seismic design of structures is becoming more important. Earthquake induced motion is one of the sources of dynamic loads, that must be considered in the design of structures. The revised code IS 1893-2002 (Part 1) has reclassified the zonal map of India into four zones, thus bringing more than 55% of the area under seismic zones. An attempt has been made in this paper to study the behaviour of interior columns of multistoried building frames in various seismic zones. In normal practice, the interior columns of a symmetric building are designed only for axial loads using IS 456:2000 with a minimum eccentricity. But during earthquakes, higher moments are generated in these interior columns and there is no provision in IS 1893-2002 for the eccentricity to be adopted in the design of columns. Several multistoried building frames were analysed using STAAD Pro and the eccentricities of loading in the interior columns were calculated. Based on the study, suitable equations were developed for each seismic zone to calculate the eccentricity of an interior column in symmetric buildings. This eccentricity can be adopted as the design criterion for the seismic design of interior columns.
As flat slab building structures are comparatively more flexible than conventional concrete framed structure, so it becomes more vulnerable to seismic loading. In composite column construction, steel and concrete are integrated in that manner that the advantages of the materials are recruited in efficient manner. The main objective of this study is only to study the seismic behavior of different types of flat slab building system with composite column at different soil conditions. Seismic parameters are followed by IS-1893IS- -2016 And also there are many types of composite columns and from those concrete encased composite column are taken for the analysis. G+15 storied Model analyses preferred from previous studies by using Etabs-2017 (Structural Analysis Software). The results expected as in the previous studies, may be flat slabs with perimeter beams gives comparatively better results. Composite column design parameters are followed by Eurocode-4 and flat slab design parameters are followed by IS-456-2000. International Research Journal of Engineering and Technology (IRJET) e