Analytical Investigation of Composite Structure in Comparison of RCC Structure

Abstract High rise structures becoming very common everywhere due to scarcity of land and increasing population. Though we have RCC structure system as high-rise buildings, but in RCC buildings due to bulky size of the components of the structure self-weight will be more due to the heavy density of materials. By observing the difficulties and challenges in the field of high-rise structures engineers are using efficient structural system that is Steel Concrete Composite Structure. Composite structure consists composite deck slab, composite beam and composite column. Composite Structure complies of Concrete which is good in compression and structural steel which good in tension and composition of these material makes structure better in ductility which comparatively on higher side than RCC structure. Here G+7 high rise structure is considered for analysis by ETABS software. This paper involves Analysis of Commercial building by Equivalent static method on Composite structure and RCC structure with same plan of building and same design data. The structure is in earthquake zone III and wind speed 44m/s. Analytical comparisons of both Composite and RCC frame based on structural parameters are made with help of graphs and tables. By comparing the results, we found that Steel-Concrete Composite Structures are more desirable than RCC structures.

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Dynamic Analysis on RCC and Composite Structure for Uniform and Optimized Section

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.39503 ◽

2021 ◽

Vol 9 (12) ◽

pp. 1114-1127

Author(s):

Ankit Kumar

Keyword(s):

Dynamic Analysis ◽

Composite Structure ◽

Composite Structures ◽

Response Spectrum ◽

Steel Structures ◽

Seismic Zone ◽

Dead Weight ◽

Conventional Concrete ◽

High Rise ◽

Time Period

Abstract: This study examines the composite structure that is increasing commonly in developing countries. For medium-rise to high-rise building construction, RCC structures is no longer economical due to heavy dead weight, limited span, low natural frequency and hazardous formwork. The majority of commercial buildings are designed and constructed with reinforced concrete, which largely depends on the existence of the constituent materials as well as the quality of the necessary construction skills, and including the usefulness of design standards. Conventional RCC structure is not preferred nowadays for high rise structure. However, composite construction, is a recent development in the construction industry. Concrete-steel composite structures are now very popular due to some outstanding advantages over conventional concrete and steel structures. In the present work, RCC and steel-concrete composite structure are being considered for a Dynamic analysis of a G+25-storey commercial building of uniform and optimized section, located at in seismic zone IV. Response Spectrum analysis method is used to analyze RCC and composite structure, CSI ETABS v19 software is used and various results are compared such as time period, maximum storey displacement, maximum storey stiffness. Maximum storey shear and maximum stoey overturning moment. Keywords: RCC Structure, Composite Structure, Uniform Section, Optimized Section, Shear Connector, Time Period, Storey Displacement, Storey Shear, Storey Stiffness, Response Spectrum method, ETABS

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Analytical Comparison of Structure with Reinforced Concrete Wall Against Lateral Load

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/cseit2064122 ◽

2019 ◽

pp. 1336-1340

Author(s):

Mehul J. Bhavsar ◽

Digant A. Pastagia

Keyword(s):

Performance Optimization ◽

Structural Parameters ◽

Structural System ◽

Concrete Wall ◽

Structural Wall ◽

Static And Dynamic Analysis ◽

High Rise ◽

High Rise Building ◽

Moment Resisting ◽

Reinforced Concrete Wall

Buildings are generally designed to withstand against gravity load for expected life and resist extent of lateral loads by satisfying the codal provision. Main objective of structural elements is to transfer the load safely to the ground, which depends on structural system adopted. Generally, structural system can be adopted depending on the demand of client/building needs/use of structure, environmental condition, performance optimization, economic condition etc. For high rise building moment resisting frame system, structural wall systems, dual system, flat slab-structural wall systems can be employed. A residential ground with ten upper floors high rise building situated in zone-III has been taken under reference, where MRF with RC structural wall system is used. Structural parameters are compared in the study for various location and orientation of RC wall. Linear static and dynamic analysis is performed on the structure based on the IS 1893 Part-I on ETABS software.

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Research and Optimization of the Belt Truss Location in High-Rise RCC Structure

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b1085.0782s319 ◽

2019 ◽

Vol 8 (2S3) ◽

pp. 481-486

Keyword(s):

Structural Damage ◽

Shear Wall ◽

Lateral Stability ◽

Structural System ◽

Rapid Improvement ◽

Knock Out ◽

Lateral Deflection ◽

High Rise ◽

Earthquake Zone ◽

Section Structure

Rapid improvement in infrastructure to acquire the development of modern civilization is the demand of high-rise structures. As day by day, the height of structures is increasing there is problem with its stiffness which induces lateral stability and sway due to lateral forces, which has to be reduce. One more structural system has been developed to overcome problems related to lateral stability and sway of building. To reduce the lateral deflection due to earthquake or wind forces, one of the most efficient and economical structural system used to knock out these challenges is the use of belt truss and outrigger truss. It is commonly used to control the excessive drift due to lateral load, so that during minor or major earthquake, the risk of structural and non-structural damage can reduce to sufficient amount. The objective of this thesis is to optimize the location of belt truss to control the deflection or sway of building. Here, Belt truss can be shear wall, hollow steel sections, braced sections and many more. In this paper, we are going to compare the results due to different locations of shear wall and X-braced section. Structure is located in earthquake zone IV(India) on Hard rock strata. Different results to be compared are Lateral Deflection, story drift. Study provides comparison between the two, by analyzing and designing the G+24 irregular residential structure. By using belt truss at ideal location, overall lateral deflection reduces by 22%. And this ideal location is obtained when the belt truss is applied at 13th & 14th floors simultaneously. From this location of belt truss, we can conclude that the lateral deflection of the high-rise structure can be reduce by applying the belt truss in the middle floors.

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Parameter Optimization for Composite Structures of Microperforated Panel and Porous Metal for Optimal Sound Absorption Performance

Applied Sciences ◽

10.3390/app9224798 ◽

2019 ◽

Vol 9 (22) ◽

pp. 4798 ◽

Cited By ~ 2

Author(s):

Haiqin Duan ◽

Xinmin Shen ◽

Fei Yang ◽

Panfeng Bai ◽

Xiaofang Lou ◽

...

Keyword(s):

Absorption Coefficient ◽

Parameter Optimization ◽

Composite Structure ◽

Composite Structures ◽

Sound Absorption ◽

Structural Parameters ◽

Porous Metal ◽

Total Thickness ◽

Frequency Range ◽

Absorption Performance

The composite structure of a microperforated panel and porous metal is a promising sound absorber for industrial noise reduction, sound absorption performance of which can be improved through parameter optimization. A theoretical model is constructed for the composite structure of a microperforated panel and porous metal based on Maa’s theory and the Johnson–Champoux–Allard model. When the limited total thickness is 30 mm, 50 mm, and 100 mm respectively, dimensional optimization of structural parameters of the proposed composite structure is conducted for the optimal average sound absorption coefficient in the frequency range (2000 Hz, 6000 Hz) through a cuckoo search algorithm. Simulation models of the composite structures with optimal structural parameters are constructed based on the finite element method. Validations of the optimal composite structures are conducted based on the standing wave tube method. Comparative analysis of the theoretical data, simulation data, and experimental data validates feasibility and effectiveness of the parameter optimization. The optimal sandwich structure with an actual total thickness of 36.8 mm can obtain the average sound absorption coefficient of 97.65% in the frequency range (2000 Hz, 6000 Hz), which is favorable to promote practical application of the composite structures in the fields of sound absorption and noise reduction.

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Economic and Functional Feasibility of Concrete Encased Composite Columns in Buildings

10.20944/preprints202103.0724.v1 ◽

2021 ◽

Author(s):

Umair Ahmed ◽

Assad Rashid ◽

Zafar Baig

Keyword(s):

Composite Structure ◽

Developed Countries ◽

Commercial Building ◽

Composite Construction ◽

Composite Columns ◽

Floor Area ◽

High Rise ◽

Steel Composite ◽

The Developed Countries ◽

The Cost

Modern day construction is widely influenced using concrete-steel composite columns. A lot of research on concrete-steel composite columns is being carried out around the world. The rapid growth in concrete-steel composite construction has widely decreased the use of conventional reinforced cement concrete construction (R.C.C), and the steel construction practices. The concrete-steel composite construction has obtained an extensive receiving around the globe. As Pakistan is a developing country, so, it is relatively a new concept for its construction industry when compared with the developed countries around the globe. Although, the R.C.C construction is suitable and economical for construction of framing systems of low-rise buildings, however, the increased dead load, span restrictions, less stiffness and risky formwork makes it uneconomical and unviable when it comes across the construction of intermediate to high-rise buildings. This research is an effort to learn the cost effectiveness, increased or decreased stiffness, and change on the functionality of the composite construction for intermediate to high-rise buildings constructed in Pakistan. A Base + Ground + 11 storey commercial building is selected for this study. A comparison is made between conventional R.C.C columns structure and concrete-encased composite columns structure. The equivalent static nonlinear analysis is performed using ETABS 2017 software. Although, for Base + Ground + 11 storey building, the construction cost of concrete-encased composite structure is 7.7% more than the conventional R.C.C columns structure, but the concrete-encased composite structure will have 13.013% more constructed floor area. This increased floor area helps to settle the cost difference between the two structures.

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The structural design of Kunshan Xintiandi super high-rise office building

E3S Web of Conferences ◽

10.1051/e3sconf/202124803011 ◽

2021 ◽

Vol 248 ◽

pp. 03011

Author(s):

Xiaomeng Zhang ◽

Wenting Liu ◽

Yilun Zhou ◽

Xiao yang ◽

Ziao Liu

Keyword(s):

Structural Design ◽

Mechanical Performance ◽

Residential Buildings ◽

Investment Project ◽

Second Phase ◽

Structural System ◽

Commercial Building ◽

Tube System ◽

Core Tube ◽

High Rise

The Kunshan urban investment project includes 1 office tower, 4 high-rise residential buildings and 1 high-rise commercial building. Each monomer shares a large basement chassis, a total of three basement floors. This design is the second phase (5# super high-rise and corresponding basement).The height of the structure is more than 140 meters, which is a concrete-filled steel tubular frame + core tube system. The selection and structure of the structural system are analyzed, and the mechanical performance of the structure is verified through calculation and analysis.

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FIRE RESISTACE OF SHEAR CONNECTORS FOR COMPOSITE BEAMS

Building and reconstruction ◽

10.33979/2073-7416-2020-92-6-59-65 ◽

2020 ◽

Vol 92 (6) ◽

pp. 59-65

Author(s):

G.P. TONKIH ◽

◽

D.A. CHESNOKOV ◽

◽

Keyword(s):

Fire Resistance ◽

Composite Structure ◽

Composite Structures ◽

Composite Beams ◽

Design Codes ◽

Connection Strength ◽

Shear Connectors ◽

Shear Connection ◽

Capacity Reduction ◽

Russian Research

Most of Russian research about composite structure fire resistance are dedicated to the composite slab behavior. The composite beams fire resistance had been never investigated in enough volume: the temperature evaluation within the scope of the actual Russian design codes leads to the significant reduction in the shear connection strength. Meanwhile, there no correlation between the strength decreasing and type of the shear connection. The article provides an overview of the relevant researches and offers some approaches which could take into account bearing capacity reduction of the shear connectors within composite structures design.

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Tunable Low Frequency Band Gap and Waveguide of Phononic Crystal Plates with Different Filling Ratio

Crystals ◽

10.3390/cryst11070828 ◽

2021 ◽

Vol 11 (7) ◽

pp. 828

Author(s):

Shaobo Zhang ◽

Jiang Liu ◽

Hongbo Zhang ◽

Shuliang Wang

Keyword(s):

Band Gap ◽

Composite Structure ◽

Structural Parameters ◽

Phononic Crystal ◽

Low Frequency ◽

Filling Ratio ◽

Height Ratio ◽

Road Vehicles ◽

Aluminum Base ◽

Gap Width

Aiming at solving the NVH problem in vehicles, a novel composite structure is proposed. The new structure uses a hollow-stub phononic-crystal with filled cylinders (HPFC) plate. Any unit in the plate consists of a lead head, a silicon rubber body, an aluminum base as outer column and an opposite arranged inner pole. The dispersion curves are investigated by numerical simulations and the influences of structural parameters are discussed, including traditional hollow radius, thickness, height ratio, and the new proposed filling ratio. Three new arrays are created and their spectrum maps are calculated. In the dispersion simulation results, new branches are observed. The new branches would move towards lower frequency zone and the band gap width enlarges as the filling ratio decreases. The transmission spectrum results show that the new design can realize three different multiplexing arrays for waveguides and also extend the locally resonant sonic band gap. In summary, the proposed HPFC structure could meet the requirement for noise guiding and filtering. Compared to a traditional phononic crystal plate, this new composite structure may be more suitable for noise reduction in rail or road vehicles.

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High Performance NbMoTa–Al2O3 Multilayer Composite Structure Manufacturing by Laser Directed Energy Deposition

Materials ◽

10.3390/ma14071685 ◽

2021 ◽

Vol 14 (7) ◽

pp. 1685

Author(s):

Hang Zhang ◽

Zihao Chen ◽

Yaoyao He ◽

Xin Guo ◽

Qingyu Li ◽

...

Keyword(s):

Smart Materials ◽

Composite Structure ◽

Composite Structures ◽

High Performance ◽

Energy Deposition ◽

Coefficient Of Thermal Expansion ◽

Multilayer Composite ◽

Forming Process ◽

Directed Energy Deposition ◽

Directed Energy

The conventional method of preparing metal–ceramic composite structures causes delamination and cracking defects due to differences in the composite structures’ properties, such as the coefficient of thermal expansion between metal and ceramic materials. Laser-directed energy deposition (LDED) technology has a unique advantage in that the composition of the materials can be changed during the forming process. This technique can overcome existing problems by forming composite structures. In this study, a multilayer composite structure was prepared using LDED technology, and different materials were deposited with their own appropriate process parameters. A layer of Al2O3 ceramic was deposited first, and then three layers of a NbMoTa multi-principal element alloy (MPEA) were deposited as a single composite structural unit. A specimen of the NbMoTa–Al2O3 multilayer composite structure, composed of multiple composite structural units, was formed on the upper surface of a φ20 mm × 60 mm cylinder. The wear resistance was improved by 55% compared to the NbMoTa. The resistivity was 1.55 × 10−5 Ω × m in the parallel forming direction and 1.29 × 10−7 Ω × m in the vertical forming direction. A new, electrically anisotropic material was successfully obtained, and this study provides experimental methods and data for the preparation of smart materials and new sensors.

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Experimental assessment of the shear strength of an asymmetric steel composite beam with web openings

Canadian Journal of Civil Engineering ◽

10.1139/l04-094 ◽

2005 ◽

Vol 32 (2) ◽

pp. 314-328 ◽

Cited By ~ 6

Author(s):

Young K Ju ◽

Do-Hyun Kim ◽

Sang-Dae Kim

Keyword(s):

Shear Strength ◽

Composite Beam ◽

Residential Buildings ◽

Shear Capacity ◽

Structural System ◽

Web Openings ◽

Wide Beam ◽

High Rise ◽

Beam Shear ◽

Steel Composite

The number of high-rise buildings has greatly increased in Korea, and storey height is a significant component of tall residential buildings due to the limited city area. To reduce storey height, the wide beam has been adopted in some projects in Seoul such as Trump World, Galleria Palace, and Richencia. The joints between the wide beam and the core wall were too narrow to place the reinforcement, however. This paper investigates a newly developed structural system called the innovative, technical, economical, and convenient hybrid system (iTECH system). The iTECH system has an asymmetric steel assembly with web openings, where the top plate is welded on top of inverted structural "tees" whose cut is referred to as a "honeycomb" type. Both sides of the web and the slab are filled with cast-in-place concrete. The shear capacity was experimentally evaluated and verified, with parameters determined by factors that shared the shear strength of the iTECH beam. The steel web, inner concrete panel, and outer concrete panel contributed to the shear strength of the iTECH beam. The shear stirrup did not contribute much to the shear strength, however, and therefore a design equation using the steel web and inner concrete panel was suggested.Key words: composite beam, shear capacity, monotonic test, high-rise building.

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