Reliability Analysis of Spread Footing Over Circular Void

Vydehi, K. Venkata (2015) Reliability Analysis of Spread Footing Over Circular Void. MTech thesis.



Presence of void beneath the footing affects the stability itself and causes severe damage to the structure. The stability of footing depends on condition of operating it and the properties of soil, voids. Existence of underground cavities for important and huge structures such as pipe lines and tunnels affects its serviceability. The factors affecting the Bearing capacity and settlement of footing are soil properties, operational conditions, void size, location of void, number of voids and depth of foundation. The performance of footing is analysed over void under different boundary conditions using finite element package PLAXIS 8.1 version. The data used in the present study is taken from available literature. On the other hand, though deterministic analysis gives basic idea, probability of failure of the structure is analysed using reliability method. For this purpose linear response surface model is generated using two-level full factorial design and limit state function is obtained. Reliability analysis is performed on the footing with voids by using first order reliability method (FORM). The probability of failure of structure under standard conditions is analysed and requirement of reliability is discussed.

Item Type:Thesis (MTech)
Uncontrolled Keywords:Reliability analysis,Cavity,Plaxis
Subjects:Engineering and Technology > Civil Engineering > Geotechnical Engineering
Divisions: Engineering and Technology > Department of Civil Engineering
ID Code:6973
Deposited By:Mr. Sanat Kumar Behera
Deposited On:08 Feb 2016 09:54
Last Modified:08 Feb 2016 09:54
Supervisor(s):Das, S K

Repository Staff Only: item control page