Muhammad Habib | Balochistan University of IT, Engineering and Management Sciences, Quetta. (original) (raw)
Related Authors
Sardar Bahadur Khan Women University Quetta
Uploads
Journal Papers by Muhammad Habib
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Journal of Applied and Emerging Sciences, 2020
Cable stayed bridges are most widely used in the modern medium to long bridge construction due to... more Cable stayed bridges are most widely used in the modern medium to long bridge construction due to their efficient response, economic viability, faster construction, and eye-catching aesthetics. The dynamic response of a single tower cable stayed bridge is studied by performing both nonlinear static and dynamic analyses using finite element method based software ANSYS. A three dimensional bridge model was developed using ANSYS. The steel cables were simulated using a single element approach to minimize the time and data use. Due to the complexity of cable stayed bridges, it is tried to avoid the convergence problems by adopting the displacement convergence approach. The bridge exhibits complex modal shapes due to the coupling effects for the free vibrations. The response of the bridge in vertical direction is more elastic and flexible as compared to the longitudinal and transverse direction. Response of the critical sections of girder, tower, and cables was also studied by time-history analysis using the ground acceleration data of the EI-Centro 1940 earthquake. A 10 second ground data with 0.0001 second time step was used. It was observed that stiffness in the vertical direction is a key player in the dynamic behavior of the cable stayed bridge. The response of the right and left span is similar which adds to the accuracy of the analysis. Time history analysis of the bridge shows that the largest displacements or peak responses are not related to the peak ground accelerations, rather they are dependent on many other factors like bridge stiffness, nature of the earthquake ground excitations and mass distribution. However, the results show the general trend of cable stayed bridges.
Papers by Muhammad Habib
IEEE Access, 2020
Reputation of the public sector organizations has been in the limelight of research since the las... more Reputation of the public sector organizations has been in the limelight of research since the last few years. It is because a positive reputation attracts foreign direct investment, elevates the trust of the general public in their government, increases the net tax collections and in aggregate improves the image and identity of the country. The aim of the present study is to propose and evaluate a research model that includes project management maturity as an antecedent to organizational reputation. The suggested research model is assessed using Partial Least Squares Structural Equation Modeling (PLS-SEM). Furthermore, the hypotheses generated in the study were examined based on a sample of 425 respondents from the projectbased public sector organizations of Pakistan. Moreover, the findings indicate that there is a significant positive relationship between maturity in project management and reputation of public sector organizations. Additionally, it is determined from the findings of the study that different dimensions of project management maturity such as process management, project management training, knowledge management transfer, continuous improvement and the use of project management software positively affect the reputation of the public sector organizations in Pakistan.
Journal of Applied and Emerging Sciences, 2020
The accumulated stress based porewater pressure (PWP) generation model is a simplified model usin... more The accumulated stress based porewater pressure (PWP) generation model is a simplified model using the concept of damage parameter. The only input of this PWP model is liquefaction resistance curve (CRR-N). The model is very useful since the CSR-N curves can be developed empirically from in-situ penetration tests measurements. In this research work the estimation of excess PWP development during seismic loading by using stress based PWP generation model is compared with a rigorous plasticity model. One dimensional (1D) effective stress nonlinear site response analyses were conducted in DEEPSOIL and Opensees using the stress based PWP model and PressureDependentMultiYield02 (PDMY2) model, respectively. The site response analysis were performed on a sand column 30 m in depth comprises of a low density liquefiable layer in between two dense non-liquefiable layers. Three bed rock outcropping motions with peak ground acceleration (PGA) level of 0.11 g, 0.124 g and 0.357 g were used as in...
The Open Civil Engineering Journal, 2019
Introduction: Ultra-High-Performance Concrete (UHPC) is an advanced type of concrete in the Civil... more Introduction: Ultra-High-Performance Concrete (UHPC) is an advanced type of concrete in the Civil Engineering industry. It is a cement-based composite which exhibits improved mechanical and durable properties showing a high compressive strength of not less than 150 MPa and high tensile strength of not less than 7 MPa. Objective: In this article, a review of the use of a different type of supplementary cementitious materials (SCMs) including fibers is made for obtaining the desired UHPC. Discussion and Conclusion: For this, it is vital to understand the principles of UHPC. UHPC has several advantages over normal strength concrete (NSC) and high strength concrete (HSC) with some commercially ready UHPC’s available, but the use of it is restricted due to the limited design codes. The influence of the curing type also plays a vital role in the overall performance of UHPC.
Doboku Gakkai Ronbunshu, 1997
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
Journal of Applied and Emerging Sciences, 2020
Cable stayed bridges are most widely used in the modern medium to long bridge construction due to... more Cable stayed bridges are most widely used in the modern medium to long bridge construction due to their efficient response, economic viability, faster construction, and eye-catching aesthetics. The dynamic response of a single tower cable stayed bridge is studied by performing both nonlinear static and dynamic analyses using finite element method based software ANSYS. A three dimensional bridge model was developed using ANSYS. The steel cables were simulated using a single element approach to minimize the time and data use. Due to the complexity of cable stayed bridges, it is tried to avoid the convergence problems by adopting the displacement convergence approach. The bridge exhibits complex modal shapes due to the coupling effects for the free vibrations. The response of the bridge in vertical direction is more elastic and flexible as compared to the longitudinal and transverse direction. Response of the critical sections of girder, tower, and cables was also studied by time-history analysis using the ground acceleration data of the EI-Centro 1940 earthquake. A 10 second ground data with 0.0001 second time step was used. It was observed that stiffness in the vertical direction is a key player in the dynamic behavior of the cable stayed bridge. The response of the right and left span is similar which adds to the accuracy of the analysis. Time history analysis of the bridge shows that the largest displacements or peak responses are not related to the peak ground accelerations, rather they are dependent on many other factors like bridge stiffness, nature of the earthquake ground excitations and mass distribution. However, the results show the general trend of cable stayed bridges.
IEEE Access, 2020
Reputation of the public sector organizations has been in the limelight of research since the las... more Reputation of the public sector organizations has been in the limelight of research since the last few years. It is because a positive reputation attracts foreign direct investment, elevates the trust of the general public in their government, increases the net tax collections and in aggregate improves the image and identity of the country. The aim of the present study is to propose and evaluate a research model that includes project management maturity as an antecedent to organizational reputation. The suggested research model is assessed using Partial Least Squares Structural Equation Modeling (PLS-SEM). Furthermore, the hypotheses generated in the study were examined based on a sample of 425 respondents from the projectbased public sector organizations of Pakistan. Moreover, the findings indicate that there is a significant positive relationship between maturity in project management and reputation of public sector organizations. Additionally, it is determined from the findings of the study that different dimensions of project management maturity such as process management, project management training, knowledge management transfer, continuous improvement and the use of project management software positively affect the reputation of the public sector organizations in Pakistan.
Journal of Applied and Emerging Sciences, 2020
The accumulated stress based porewater pressure (PWP) generation model is a simplified model usin... more The accumulated stress based porewater pressure (PWP) generation model is a simplified model using the concept of damage parameter. The only input of this PWP model is liquefaction resistance curve (CRR-N). The model is very useful since the CSR-N curves can be developed empirically from in-situ penetration tests measurements. In this research work the estimation of excess PWP development during seismic loading by using stress based PWP generation model is compared with a rigorous plasticity model. One dimensional (1D) effective stress nonlinear site response analyses were conducted in DEEPSOIL and Opensees using the stress based PWP model and PressureDependentMultiYield02 (PDMY2) model, respectively. The site response analysis were performed on a sand column 30 m in depth comprises of a low density liquefiable layer in between two dense non-liquefiable layers. Three bed rock outcropping motions with peak ground acceleration (PGA) level of 0.11 g, 0.124 g and 0.357 g were used as in...
The Open Civil Engineering Journal, 2019
Introduction: Ultra-High-Performance Concrete (UHPC) is an advanced type of concrete in the Civil... more Introduction: Ultra-High-Performance Concrete (UHPC) is an advanced type of concrete in the Civil Engineering industry. It is a cement-based composite which exhibits improved mechanical and durable properties showing a high compressive strength of not less than 150 MPa and high tensile strength of not less than 7 MPa. Objective: In this article, a review of the use of a different type of supplementary cementitious materials (SCMs) including fibers is made for obtaining the desired UHPC. Discussion and Conclusion: For this, it is vital to understand the principles of UHPC. UHPC has several advantages over normal strength concrete (NSC) and high strength concrete (HSC) with some commercially ready UHPC’s available, but the use of it is restricted due to the limited design codes. The influence of the curing type also plays a vital role in the overall performance of UHPC.
Doboku Gakkai Ronbunshu, 1997