http://210.212.227.212:8080/xmlui/handle/123456789/156 2026-05-27T20:57:48Z 2026-05-27T20:57:48Z Binsa, S B Mohammed, Thowsif http://210.212.227.212:8080/xmlui/handle/123456789/237 2022-10-15T10:43:45Z 2022-01-01T00:00:00Z

Title: PUSHOVER ANALYSIS OF BUILDING WITH FLOATING COLUMN STRENGTHENED BY SHEAR WALL Authors: Binsa, S B; Mohammed, Thowsif Abstract: In a constructive world of emerging high-rise buildings, due to the lack of space, floating column adds as an advantage for proper functioning. Floating column introduced in seismic prone areas is found to be hazardous. Stability of such structures seems to be an important factor. Shear wall is one of the efficient lateral load resistors. Therefore, proper analysis can help the structure to attain column free space and strength. Pushover analysis is a non-linear static analysis in which the ultimate load, deflection capability and the critical members can be determined. In this study, pushover analysis is being done on six-storey building with floating columns provided at ground storey. Pushover analysis is being done in ETABS software. Comparison on building with and without shear wall is done. Influence of shear wall at different locations, ie, at core, periphery and corner are analysed. Shear wall with opening of size 1x1m is provided to study the influence of opening in stability of the structure. From the study it is clear that building with shear wall performs well and could reduce the displacement about 80%. In a building without a shear wall even though target displacement is high, load carrying capacity is found to be low. Shear wall fails prior to structural member, which resist the building from collapse. In the last step of pushover analysis, the collapse of building without shear wall occurred on first floor, which can lead to total collapse of building. In the case of models with shear wall collapse occurred on the upper floor, shows better performance than the building without shear wall

2022-01-01T00:00:00Z Febin Fathima, N M Chinsu Mereena, Joy http://210.212.227.212:8080/xmlui/handle/123456789/236 2022-10-15T10:37:47Z 2022-01-01T00:00:00Z

Title: NUMERICAL ANALYSIS OF FLEXURAL BEHAVIOUR OF CONCRETE FILLED STEEL TUBES(CFST) WITH TWO DIFFERENT CONCRETE INFILL Authors: Febin Fathima, N M; Chinsu Mereena, Joy Abstract: The main goal of this research is set out to study the flexural behaviour of concrete filled steel tubes (CFST) giving insight to two different concrete infills and their behaviour in different parametric combinations. A numerical study is done on high strength concrete filled CFST and geopolymer filled CFSTs. Separate models were used for both high strength concrete and geopolymer concrete. The numerical investigation is done using ANSYS software. The Drucker Prager (DP) model is used for modelling the concrete. An extensive parametric study was performed to investigate the influences of depth-to-thickness ratio (28.57−200), effect of D/B ratio (24-42.8) and steel yield strengths (235–420 MPa) on the fundamental behavior of CFST beams under flexure load. When the D/B ratio increased from 0.54 to 2, the ultimate capacity of members is increased by more than 50%. In the analysis, the geopolymer filled CFST was able to take more load as compared with the high strength concrete. It can be seen that by increasing D/t ratio from 28.57 to 200 (7 times), the ultimate bending moment capacity reduced from 207.8 to 21 kNm (almost 8 times) for square CFST beams. The ultimate flexure strength of square CFST beams was found to increase significantly with an increase in the yield strength of steel. By increasing the yield strength of steel from 235 MPa to 420 MPa, the ultimate flexure load of the square CFST beam was found to increase. The developed models were also analyzed under cyclic loading condition. An artificial neural network prediction model was developed to predict the flexural strength of the CFST models. This study aims to establish a comparison between Multilayer Feed forward - a Multilayer Perceptron network (MLP) with feed forward learning - and a Radial Basis Function Network (RBF). From the results, it was observed that the two types of networks (Multilayer Perceptron and Radial Basis Function) were able to predict the results satisfactorily. However, the Multilayer Perceptron network showed higher accuracy than the radial basis function. The R² value of MLP analysis was found to be better than RBF

2022-01-01T00:00:00Z Fiza, Fathima Anu, Thomas V http://210.212.227.212:8080/xmlui/handle/123456789/235 2022-10-15T10:28:18Z 2022-07-06T00:00:00Z

Title: DEVELOPMENT OF RISK ANALYSIS MODEL IN PUBLIC PRIVATE PARTNERSHIP PROJECTS Authors: Fiza, Fathima; Anu, Thomas V Abstract: To fulfil the increasing demands of the public, Public Private Partnership (PPP) has been increasingly used to procure infrastructure projects. However, the risks involved in PPP projects are unique and dynamic due to large amount of investment and long concession period. This causes many challenges like cost overruns, time overruns and lower quality. Risk management is a crucial part of PPP projects. It is important to accurately identify and evaluate the risks involved in PPP projects due to its immense application in the development of infrastructure. The present study deals with the prioritization and analysis of risks in PPP projects. 26 risk factors are categorized under 8 main risk heads identified from literature. Multiple-Criteria Decision Analysis (MCDMs) techniques like Analytical Hierarchy Process (AHP), Decision Making Trial and Evaluation Laboratory (DEMATEL) and Failure Mode and Effect Analysis (FMEA) are utilized for prioritizing, finding the stakeholder perception of the risk factors and determining the interrelationship between the main risk heads. The eight main risk heads identified are financial, legal, political, economic, operation and maintenance, construction, social and relationship risks. Social risk is identified as the most significant risk in all basis. Risk remedial measures are also identified to mitigate the risks in PPP projects. Relative Importance Index (RII) is used to prioritize them. Finally, risk factors are modelled in Partial Least Square Structural Equation Modelling (PLS-SEM) to find their impact on PPP project performance. The study concluded that social, legal, financial and construction risks have significant negative impact on project performance. Effect of social and legal risks on economic risk and political risk on financial risk are also found significant.

2022-07-06T00:00:00Z Jasmin, Jabbar Seema K, Nair http://210.212.227.212:8080/xmlui/handle/123456789/234 2022-10-15T10:19:44Z 2022-09-12T00:00:00Z

Title: DEVELOPMENT OF A STANDARDIZED INTEGRATED BIM APPROACH FOR A VILLA PROJECT Authors: Jasmin, Jabbar; Seema K, Nair Abstract: The process of managing a construction project is difficult and time-consuming. Since the jobs associated with a project are diverse and complex, involving numerous stakeholders in various phases, successful project management is not easy. Moreover, reliance on manual labour and the reluctance to adopt automation in planning and design, make management of projects difficult. However, there is ample scope of information technology in construction industry and within the context of sustainable development, the expectations associated with efficient project management has increased multi-fold. Building Information Modelling (BIM) offers great support in project management, together with advanced technologies as knowledge systems.BIM is a progressive intelligent 3D model-based process that gives Architecture, Engineering and Construction (AEC) professionals the insight to plan, design and manage more efficiently. In an attempt to simplify the efforts of the industry and to tap the potential of the technology, this study proposes an integrated BIM approach for a double-storeyed villa so as to develop a complete integrated 4D/5D BIM workflow. The dominant aim of this study is to standardize the BIM metadata with the help of a BEP (BIM Execution Plan), which is limited to 5D.The management tool used in this work is Bexel Manager. This work also proposes the standardization of a workflow template in order to replicate similar projects in future, leading to less rework and more of optimization and customization of digital workflows. With the intention of keeping the project as close to the industry and using authentic data, the labour productivity was determined through a questionnaire survey. The output quantity per work hour was examined from 30 responses from the industry. To calculate the productivity criteria and schedule the project, this output quantity was employed as an input. Autodesk Revit was used to create the villa's 3D model. Primavera P6 was used to construct the 4D/5D model after analysing the quantity take-off and Bill of Quantities (BOQ). A clash-free model was created once the 3D model's clashes were identified. As a result, the cost disparity was discovered and a template of the same was standardized. After that, the properties required to create a flawless BIM model were standardised in accordance with LOD 300 in the BIMForum's ISO 19650 series, in the form of a template. The constructed villa model underwent a property check, and a report was simulatively generated. Then a template defining the quantity take-off structure was created for the typical villa project and was standardized. iii Comparably, all the activities required for a villa project was sorted and standardized. Also, as a part of deriving the creation template, the methodology of the project was generated in two levels of cost item. As a result, the entire workflow of a double-storeyed villa has been standardized and the schedule has been generated effortlessly. This template can be used to develop the workflow/schedule of any residential building smoothly. Ultimately, the standardized workflow has been suggested to experts in construction industry, which comprised of project managers, engineers and supervisors, and the feedback was recorded and simulated. The upshot showed that the integrated BIM approach was significantly and considerably excelling the traditional mode of project management

2022-09-12T00:00:00Z