DSpace Collection:https://elibrary.tucl.edu.np/handle/123456789/170492024-03-19T09:48:28Z2024-03-19T09:48:28ZSTUDY OF PAVEMENT RESPONSE TO VEHICLE LOADING AND EVALUATION OF DAMAGE DUE TO OVERLOADPaudel, Roshit RajLaha, KamleshSubedi, PratikKhadka, PratikshaTimilsina, SabitKatwal, Sailendrahttps://elibrary.tucl.edu.np/handle/123456789/205912023-11-17T21:18:46Z2023-04-01T00:00:00ZTitle: STUDY OF PAVEMENT RESPONSE TO VEHICLE LOADING AND EVALUATION OF DAMAGE DUE TO OVERLOAD
Authors: Paudel, Roshit Raj; Laha, Kamlesh; Subedi, Pratik; Khadka, Pratiksha; Timilsina, Sabit; Katwal, Sailendra
Abstract: Flexible pavements are extensively utilized in roadway and airport construction due to their
capacity to endure traffic loads and deformations. Finite element (FE) analysis has emerged
as a prominent tool for projecting the performance of flexible pavements subjected to
varying traffic loads and environmental conditions. In this report, an FE model of a flexible
pavement was established and scrutinized through the use of the commercial software
ABAQUS. The model encompassed numerous layers, including asphalt concrete, base,
subbase, and subgrade layers. Validation of the FE model was done using IITPAVE. The
linear model of the developed stress exhibited an increment in response with a rise in
vehicular speed, whereas the viscoelastic model revealed a decline in stress with an increase
in vehicular speed. It was found that the viscoelastic pavement has a higher response than
linear elastic pavement and was concluded that the viscoelastic pavement is subjected to
damage earlier than the linearly elastic pavement due to the development of more strain in
viscoelastic pavement than in linearly elastic pavement. The findings of the FE analysis
divulged that the pavement responses were heavily influenced by the individual properties
of the various pavement layers and the traffic loads applied.
Additionally, the report addresses the issue of pavement failure due to overloaded vehicles
on highways in Nepal, which reduces the road's service life. The findings indicate that the
major cause of pavement failure is vehicle overload, with a decrease in remaining service
life for the pavement ranging from 46 to 68 percent for an average value of overloading. The
study also found that the required increase in asphalt overlaying due to vehicle overload is
15 to 21 percent for an average value of overloading. The CESAL values obtained through
different methods provide fairly consistent estimates for the reduction in pavement service
life and the increase in overlay thickness.
Description: Pavement is a multi-layered system that transmits the vehicular loads into the underlying soil. The
frequent loading and unloading of pavements with varying intensity and speeds makes their quality
and strength deteriorate quickly. This deterioration is unavoidable, but it can be delayed by proper
design and construction of pavements.2023-04-01T00:00:00ZSTUDY OF COMBINED PILE RAFT FOUNDATION ON THE SOIL OF CHAKUPAT AREAPathak, AasthaMahat, AnilPaudel, BikramShrestha, BinayarajBanstola, BinitChhantyal, Bipinhttps://elibrary.tucl.edu.np/handle/123456789/203272023-10-08T21:18:00Z2023-04-01T00:00:00ZTitle: STUDY OF COMBINED PILE RAFT FOUNDATION ON THE SOIL OF CHAKUPAT AREA
Authors: Pathak, Aastha; Mahat, Anil; Paudel, Bikram; Shrestha, Binayaraj; Banstola, Binit; Chhantyal, Bipin
Abstract: Traditional foundations cannot support a structure on weak soil or heavily settling soil. For
the purpose of controlling settlement, pile raft foundations are used, with the raft part
providing additional capacity at ultimate loading while the piles provide the majority of
stiffness under serviceability loads. The utilisation of pile raft foundations in the Chakupat
area which lies in the Kathmandu Valley is the subject of this research. The Kathmandu
Valley is located in an earthquake-prone area. After the 2015 earthquake, it is suggested to
implement a more solid and appropriate building strategy. The ideal alternative for the
construction is a piling raft foundation. As more and more tall structures are constructed in
Kathmandu, the pile raft foundation has a good chance of success in the valley of
Kathmandu.
This research explains the idea behind using piles to reduce settlement for raft foundations as
well as how pile rafts behave in the soil of Chakupath area. Model tests using the ideas of an
embedded pile and a volumetric pile are carried out and compared.This study shows the
percentage of weight carried by piles in the CPRF (Combined pile raft foundation) falls as the
number of piles is reduced, and increases as pile length is raised. The findings of the model
were compared with other papers as well as with analytical calculations for confirmations. A
foundation with raft thickness of 0.6 m, pile length of 15 m, diameter of 1 m, and spacing of
4 m is the most suited in Chakupat Area when taking into consideration the examination of
the soil structure, settlement, economy, and load sharing. The results show that the CPRF
model has a bearing capacity of 573969.62kN, a factor of safety of 4.42, and a stiffness of
433886.01 kN/m.
The estimated cost for the selected model was NRs. 76109910.25. The study concluded that
CPRF was a feasible foundation for the soil of the Chakupat area, and the proposed model
was safe for construction. The findings can provide valuable information for future
construction projects in the area, and the cost estimation can aid in budget planning.
Description: Kathmandu Valley, located in the central part of Nepal, is a unique geological feature
formed by the convergence of two major tectonic plates: the Indian Plate and the
Eurasian Plate. The valley is a graben, which means that it is a depressed block of
land that is surrounded by parallel faults2023-04-01T00:00:00Z“DELINEATION OF GROUND WATER RECHARGE POTENTIAL ZONES OF CHITWAN DISTRICT”Shiwakoti, ShubhamAryal, SmaranGiri, SubashPandit, SurajTimsina, SusanAgrawal, Tarunhttps://elibrary.tucl.edu.np/handle/123456789/197242023-09-11T21:18:04Z2023-04-01T00:00:00ZTitle: “DELINEATION OF GROUND WATER RECHARGE POTENTIAL ZONES OF CHITWAN DISTRICT”
Authors: Shiwakoti, Shubham; Aryal, Smaran; Giri, Subash; Pandit, Suraj; Timsina, Susan; Agrawal, Tarun
Abstract: This research analyzes the ground water recharge potential and identifies the high ground water
recharge potential zones in Chitwan district. The calculation and estimation of groundwater
recharge is the way to understand the groundwater reservoir and forecast its potential
accessibility. The main objective of this study is to assess the groundwater recharge and its
controlling factors at Chitwan District included as Rapti and Narayani catchment basin.
Groundwater recharge process is crucial for maintaining the water balance in an area and
securing sustainable water supply for drinking, agriculture and industrial purposes and it is also
very necessary for the management of both surface and subsurface water resources. Our study
uses the application of analytical hierarchical process (AHP) on geospatial analysis for the
exploration of potential zones for artificial groundwater recharge. Various aspects of earth
surface features such as geology, geomorphology, soil types, land use and land cover, slope,
aspect, precipitation, population density, elevation etc. are taken in consideration that influence
the groundwater recharge in either direct or indirect way. These thematic layers are prepared
and extracted using population data, Landsat 8 image, topographical map, and various other
data sources. Weighted analysis and union of data obtained is used for formation of recharge
map in this study. A pair-wise matrix analytical method is used to calculate the geometric mean
and normalized weight of individual parameters also known as AHP analysis. Further, the
normalized weighted layers are mathematically overlaid for preparation of groundwater
recharge potential zone map. The results reveals that around 133.17 sq. km (6%) of total area
has been identified as high potential zone for groundwater recharge. The forest areas in central
part and south western part have high potential for groundwater recharge. Hilly and mountain
terrains in north Mahabharata range are considered as unsuitable zone with very low
groundwater recharge potential.
Description: In the world scenario, some region, have abundant groundwater resources, while others are
experiencing significant challenges due to overuse, contamination, or other issues. According to
the United Nations, more than two billion people currently living in the countries experiencing
high water stress, and by 2050, about five billion people could be affected2023-04-01T00:00:00ZDetailed Engineering Survey, Design and Cost estimation of Chhaling RoadMaharjan, GarimaKhadka, GauravShreesh, HariShrestha, IshaAdhikari, NirajAdhikari, Prashanthttps://elibrary.tucl.edu.np/handle/123456789/194092023-08-28T21:18:12Z2023-04-01T00:00:00ZTitle: Detailed Engineering Survey, Design and Cost estimation of Chhaling Road
Authors: Maharjan, Garima; Khadka, Gaurav; Shreesh, Hari; Shrestha, Isha; Adhikari, Niraj; Adhikari, Prashant2023-04-01T00:00:00Z