dc.contributor.author |
Kularathna, HGSR |
|
dc.contributor.author |
Siriwardhana, DNTM |
|
dc.contributor.author |
Sudharshana, WN |
|
dc.contributor.author |
Lewangamage, CS |
|
dc.date.accessioned |
2013-10-21T02:12:33Z |
|
dc.date.available |
2013-10-21T02:12:33Z |
|
dc.date.issued |
2011 |
|
dc.identifier.uri |
http://dl.lib.mrt.ac.lk/handle/123/8136 |
|
dc.description.abstract |
Yudaganawa dagoba in Uva province is one of the largest stupas in Sri Lanka which dates back to 2nd century BC.
Presently, this colossal stupa with a diameter about 91.2 m and reaching a height of 13 m is undergoing several issues
which necessitate it to be rehabilitated. The stupa was found in ruins and grown with vegetation until it has been
preserved by subsequent restoration efforts in the recent past. However, it is not standing at its original height wellmatched
with the circumference at its base. Further, existing formation of the structure, existing foundation and ground
condition are unknown. This paper presents structural assessment of existing stupa and proposal for rehabilitation in
order to build the stupa to its full height.
A literature survey has been carried out to investigate the structural formation of stupas in ancient Sri Lanka. The
geometry of the present stupa and the soil profile under the stupa were assessed. Material properties have been found
with adequate laboratory testing. Present condition was modelled using finite element analysis employing SAP 2000
and PLAXIS 2D. The results show that the stresses generated within the existing stupa due to its self weight is well
below than the compressive strength and the tensile strength of bricks. Based on the results, several alternative
methods are proposed for rehabilitation and the options are analysed with respect to structural performance along with
the existing condition and the religious beliefs, attitudes and rituals concerning the stupas. The possibility of cracking
in the masonry due to the self weight in each alternative method was checked using a failure criteria developed based
on the modified Von Mises theory. The final option was selected so as the stresses generated in the existing brickwork
are satisfying the failure criteria and has the minimum intervention to the stupa in the context of ancient value and the
concerns related to stupas. Consistent with that, it is shown; the existing stupa is capable of taking the load ofproposed
solid brick superstructure without showing any possibility of cracking. |
|
dc.language |
en |
|
dc.subject |
Ancient stupas |
|
dc.subject |
rehabilitation |
|
dc.subject |
finite element analysis |
|
dc.subject |
failure criteria |
|
dc.subject |
alternatives |
|
dc.title |
Structural assessment and rehabilitation option for Yudaganawa dagoba in Buttala |
|
dc.type |
Conference-Abstract |
|
dc.identifier.year |
2011 |
|
dc.identifier.conference |
Excellence in Research, Excelling a Nation |
|
dc.identifier.place |
Faculty of Engineering, University of Moratuwa |
|
dc.identifier.pgnos |
210-212 |
|
dc.identifier.proceeding |
17th Annual Research Symposium on Excellence in Research, Excelling a Nation |
|