Assessment of Seismic Vulnerability of a Reinforced Concrete Building Located in India |Chapter 12| Emerging Trends in Engineering Research and Technology Vol. 5

 

The effect of earthquake causes loss of life and property in many places all over the world. This creates the need to assess the seismic performance of the structures. The latest development leads to finding the direct losses and damage states of the buildings for various intensities of earthquake ground motions. In the present study, seismic vulnerability assessment was done for a medium rise building (G+5). The design peak ground acceleration of 0.16 g and 0.36 g were considered for the risk assessment. The nonlinear static pushover analysis was done to fine the performance point, spectral acceleration and corresponding spectral acceleration by Equivalent Linearization (EL) method given by Federal Emergency Management Agency (FEMA-440). The four damage states such as slight, moderate, extreme and collapse has been considered as per HAZUS-MR4. The seismic vulnerability in terms of fragility curves was developed to evaluate the damage probabilities based on HAZUS methodology. The discrete and cumulative damage probability was found for all the damage states of the building which shows the building at 0.16 g experience slight damage whereas at 0.36 g the moderate damage state equally becomes predominant.

 

Author(s) Details

S. Prasanth

Department of Civil Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, Prayagraj- 211004, India.

Goutam Ghosh

Department of Civil Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, Prayagraj- 211004, India.

 

Please see the book here :- https://doi.org/10.9734/bpi/etert/v5

Comparative Stiffness Analysis of Treated vs Untreated Meshed Coir Fiber Reinforced Cement Concrete | Chapter 7 | Science and Technology: Recent Updates and Future Prospects Vol. 9

 

This study investigates the impact of meshed coconut coir on the mechanical and durability properties of coir-reinforced cement concrete, aiming to control internal and external cracks. The meshed form of coir is known for its ability to mitigate shrinkage, enhancing both strength and durability. Phase I of the experimental investigation involved preparing 49 samples: 28 cubes (150x150x150mm) and 21 beam prisms (100x100x500mm). The tests included water absorption, porosity, sorption rate for physical properties, acid and alkaline attack resistance for durability, and compression and flexural bending strength for mechanical properties. The coir was tested in treated and untreated forms, with single and double layers in the concrete. Results indicated that while compressive and flexural bending strengths showed modest improvements, post-crack properties such as ductility, residual strength, and toughness significantly increased with higher fractions of meshed coir. Meshed coir reinforcement, used in layers, is proportioned between 5% to 25%. This natural fiber enhances material strength and durability, offering an eco-friendly alternative for construction and manufacturing applications. Its usage improves structural integrity while promoting sustainability. The findings suggest that meshed coconut coir can be a valuable addition to concrete, providing better crack control and improving post-crack behavior.

 

Author(s) Details

R. Parthasaarathi
Department of Civil Engineering, Hindusthan College of Engineering and Technology, Coimbatore, Tamil Nadu, India.

 

R. Sakthivel
Department of Civil Engineering, Sri Krishna Polytechnic College, Coimbatore, Tamil Nadu, India.

 

R. Senthil Kumar
Department of Civil Engineering, Hindusthan College of Engineering and Technology, Coimbatore, Tamil Nadu, India.

 

Please see the book here:- https://doi.org/10.9734/bpi/strufp/v9/1350

Behavior of Framed Masonry and Lightweight Concrete Walls under Lateral Cyclic Loads Analysis by Numerical Models | Chapter 6 | Current Approaches in Engineering Research and Technology Vol. 2

 Infill wall frames are widely used structures, including in earthquake-prone locations. The role of infill walls is often neglected in frame planning. However, infill walls play a role in improving frame performance under cyclic lateral loads. The material forming the infill wall, the type of connector between the column and the infill wall, and the connector distance determine the behavior of the frames. These things need to be analyzed to understand the performance of the frames. This research aimed to obtain the performance level of framed masonry wall (FMW) and framed lightweight concrete wall (FCW) structures to withstand cyclic lateral loads. The research was carried out using finite element-based software. The research results showed that FMW and FCW were highly ductile. FCW had a higher strength than FMW. However, it was not more ductile than FCW. The cumulative energy dissipation of FCW was 56.85% greater than FMW because it could bear lateral cyclic loads better. This indicates that masonry and lightweight concrete have the potential to infill walls for frames in earthquake-prone areas.

 

Author(s) Details:-

 

Siti Aisyah Nurjannah
Civil Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Indralaya, Indonesia.

 

Saloma
Civil Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Indralaya, Indonesia.

 

Anis Saggaff
Civil Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Indralaya, Indonesia.

 

Arie Putra Usman
Civil Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Indralaya, Indonesia.

 

Mona Fadila Rachmah
Civil Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Indralaya, Indonesia.

 

Titanio Erick Law
Civil Engineering Department, Faculty of Engineering, Universitas Sriwijaya, Indralaya, Indonesia.

 

Please see the link here:  https://doi.org/10.9734/bpi/caert/v2/12834F

Study on Structural and Electronic Properties of REAg Intermetallics | Chapter 1 | New Trends in Physical Science Research Vol. 8

Using first principles density functional theory and the extended gradient approximation, the structural, electrical, and mechanical characteristics of binary B2 - type CsCl structured intermetallic compounds of Ag (ReAg, Re= Y, La, Pr, and Er) have been examined in this chapter. When two or more metals are combined in specific amounts and react to create a solid phase that is distinctly different from the constituent elements, intermetallic compounds are created. As ground state properties, the lattice constant (a0), bulk modulus (B), and its pressure derivative (B′) are determined. The current findings and earlier experimental and theoretical computations are in good agreement. ErAg is found to be the most ductile of all the Intermetallics due to the presence of strong metallic bonding.

Author(s) Details:

Chandrabhan Makode,
Government Motilal Vigyan Mahavidyalaya, Bhopal, Madhya Pradesh, India and Department of Physics, Barkatullah University, Bhopal, 462026, India.

Jagdish Pataiya,
Dr. Bhim Rao Ambedkar Government College , Amla, Betul, India.

Archana Saxena,
Department of Physics, Barkatullah University, Bhopal, 462026, India.

Sankar P. Sanyal,
Sagar Institute of Research and Technology-Excellence, Bhopal India.

Please see the link here: https://stm.bookpi.org/NTPSR-V8/article/view/7880 

Analysing Numerical Modelling Behaviour of Reinforced Concrete Deep Beam with Strut-and-Tie Model | Chapter 03 | New Approaches in Engineering Research Vol. 12

 The behaviour of strut-and-tie models (STMs) as derived from truss analogue models is the subject of this chapter. STMs are frequently used to assess and model the internal force distribution of a reinforced concrete deep beam structure from the point load to the supports that carry bending, shearing, and twisting forces in disturbed zones (D-regions). Where the stress situation occurs idealised as the concrete strut, the steel tie, and the nodal area, the action of the strut and tie creates an increase in the strength of the high-reinforced concrete beam construction, the D-region on structural elements can be more easily studied. The deep beam was numerically modelled using compressive loading simulation until it collapsed. To determine deflection, cracking, and destruction of ultimate load, model modification of two diagonal reinforcements, diagonal symmetrical truss reinforcement, and diagonal frame truss reinforcement, ANSYS 3D half-span symmetrical Strut-and-Tie model deep beams modelling was done. The ultimate bending capacity, load-deformation, ductility, stress behaviour, strain, and fracture pattern of STMs have all been determined through shape modification. The numerical modelling result reveals a significant difference in STM's deep beam behaviour.

Author(S) Details

Syahril Taufik
Department of Civil Engineering, Institute of Science and Technology National, Jakarta, 12640, Indonesia and Department of Civil Engineering, Lambung Mangkurat University, Banjarmasin, 70123, Indonesia.

Agus Sugianto
Department of Civil Engineering, Balikpapan University, Balikpapan, 73164, Indonesia.

View Book:- https://stm.bookpi.org/NAER-V12/article/view/3837

Performance Evaluation of Reinforced Geopolymer Concrete as Earthquake Resistant Composite | Chapter 6 | New Approaches in Engineering Research Vol. 15

With the increasing challenges of ground vibrations due to seismic activity and the ever-increasing threat of blast loadings on structures, it has become more than a simple necessity to incorporate robust design strengths into structures without compromising serviceability life. When structural elements' ability to absorb and disperse energy through post elastic deformations subjected to multiple cycles of these loading is naturally incorporated at cheap cost, their performance is well acknowledged. The single controlling property for a structural element's healthy performance is its flexural element's ductility. Although several elements contribute to the ductility of Reinforced Geopolymer Concrete (RGPC), low calcium-based fly ash and GGBS have chemical proportions that allow RGPC to generate significant ductility when mixed in an intelligent way that meets structural and economic requirements. The impact of low calcium fly ash, GGBS, River sand, M-sand, Steel Grade, manufactured fibres, and natural fibres on RGPC ductility is investigated in this study using load testing 51 with reinforced flexural elements. Similar tests on the flexural ductilities of Ordinary Portland Cement based flexural elements conducted by other researchers show that Reinforced Geopolymer Concrete Structural Elements are extremely comparable and appreciated.

Author(S) Details

N. B. Mahantesh
Department of Civil Engineering, Alliance College of Engineering and Design, Bengaluru, India.

View Book:- https://stm.bookpi.org/NAER-V15/article/view/4025

Analysing Numerical Modelling Behaviour of Reinforced Concrete Deep Beam with Strut-and-Tie Model | Chapter 3 | New Approaches in Engineering Research Vol. 12

The behaviour of strut-and-tie models (STMs) as derived from truss analogue models is the subject of this chapter. STMs are frequently used to assess and model the internal force distribution of a reinforced concrete deep beam structure from the point load to the supports that carry bending, shearing, and twisting forces in disturbed zones (D-regions). Where the stress situation occurs idealised as the concrete strut, the steel tie, and the nodal area, the action of the strut and tie creates an increase in the strength of the high-reinforced concrete beam construction, the D-region on structural elements can be more easily studied. The deep beam was numerically modelled using compressive loading simulation until it collapsed. To determine deflection, cracking, and destruction of ultimate load, model modification of two diagonal reinforcements, diagonal symmetrical truss reinforcement, and diagonal frame truss reinforcement, ANSYS 3D half-span symmetrical Strut-and-Tie model deep beams modelling was done. The ultimate bending capacity, load-deformation, ductility, stress behaviour, strain, and fracture pattern of STMs have all been determined through shape modification. The numerical modelling result reveals a significant difference in STM's deep beam behaviour.

Author (S) Details

Syahril Taufik

Department of Civil Engineering, Institute of Science and Technology National, Jakarta, 12640, Indonesia and Department of Civil Engineering, Lambung Mangkurat University, Banjarmasin, 70123, Indonesia.

Agus Sugianto

Department of Civil Engineering, Balikpapan University, Balikpapan, 73164, Indonesia.

View Book :- https://stm.bookpi.org/NAER-V12/article/view/3837

Assessment of Seismic Vulnerability of a Reinforced Concrete Building Located in India | Chapter 12 | Emerging Trends in Engineering Research and Technology Vol. 5

The effect of earthquake causes loss of life and property in many places all over the world. This creates the need to assess the seismic performance of the structures. The latest development leads to finding the direct losses and damage states of the buildings for various intensities of earthquake ground motions. In the present study, seismic vulnerability assessment was done for a medium rise building (G+5). The design peak ground acceleration of 0.16 g and 0.36 g were considered for the risk assessment. The nonlinear static pushover analysis was done to fine the performance point, spectral acceleration and corresponding spectral acceleration by Equivalent Linearization (EL) method given by Federal Emergency Management Agency (FEMA-440). The four damage states such as slight, moderate, extreme and collapse has been considered as per HAZUS-MR4. The seismic vulnerability in terms of fragility curves was developed to evaluate the damage probabilities based on HAZUS methodology. The discrete and cumulative damage probability was found for all the damage states of the building which shows the building at 0.16 g experience slight damage whereas at 0.36 g the moderate damage state equally becomes predominant. 

Author (s) Details

S. Prasanth
Department of Civil Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, Prayagraj- 211004, India.

Dr. Goutam Ghosh
Department of Civil Engineering, Motilal Nehru National Institute of Technology (MNNIT), Allahabad, Prayagraj- 211004, India.

View Book :- http://bp.bookpi.org/index.php/bpi/catalog/book/187