School of Engineering (SEN)

Permanent URI for this community

https://escholar.umt.edu.pk/handle/123456789/3851

Browse

Browsing School of Engineering (SEN) by Author "Abdul Hanan"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Analytiacal Assessment of pedistrian indused vibration in foot brigde
    (UMT. Lahore, 2024) Muhammad Hamza Butt; Ch Fahad Ul Islam; Abdul Hanan; Nadir Shah
    Slender designs have been used to build pedestrian bridges that cross over extensive roadways, incorporating today’s technologies and materials. Efficient and streamlined designs of pedestrian bridges lead to changes in their functionality and maximum capacities, which in turn give rise to the problems such as structural vibrations. In pedestrian bridges, this event arises when the default structure’s frequency correlates to the frequencies at which the load induces excitation. In this study, an analysis of impact of live load on an existing pedestrian bridge using a STAAD.Pro has been performed. The structure under investigation is derived from a pedestrian bridge situated in the city of Lahore, Pakistan. Vibrational problem of the bridge necessitated an analysis of characteristics and behaviour using an analytical model. Six natural frequency modes of the bridge were examined through simulation by finite element method. 1.7 Hz to 3 Hz range frequency was observed which was below the prescribed minimum natural frequency. The results unequivocally demonstrated that the pedestrian bridge is susceptible to high vibration levels, which can jeopardize the comfort-limit state of the users. The retrofitting was done to modify and strengthen the existing structure. Results of the strengthened structure revealed that the frequency values ranged from 3.5 Hz to 11.7 Hz for six different frequency modes. These frequencies are considered appropriate for a pedestrian bridge according to the natural frequency conditions.
  • Thumbnail Image
    Item
    Application of gis in watershed analysis
    (UMT.Lahore, 2023) Wasif Hussain; Harris Riaz; Abdul Hanan; M.Usman Liaqat
    GIS plays a major role in watershed analysis. It has vast number of applications in watershed analysis. It can be used to delineate the watershed and can be used to assess the land slope and soil erosion estimation of the watershed and many different analyses. For our research, we needed to delineate the watershed using GIS and then use the delineated watershed to extract the climatic data from different model data e.g., JRA-25, ERA5 etc., using advance computer languages and then compare the extracted data visually.