Liquefaction Hazard in the Ap Capital Region, India
Hanumantharao C1, Raja Sekhar P2, Siddhardha R3
1Hanumantharao C, Professor, Civil Engineering Department, PVP Siddhartha Institute of Technology, Kanuru, Vijayawada, (AP), India.
2Raja Sekhar P, Former UG Student, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation (Deemed to be University), Vaddeswaram, (AP), India.
3Siddhardha R, Former UG Student, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation (Deemed to be University), Vaddeswaram, (AP), India.
Manuscript received on 02 June 2019 | Revised Manuscript received on 10 June 2019 | Manuscript published on 30 June 2019 | PP: 2666-2670 | Volume-8 Issue-8, June 2019 | Retrieval Number: H7541068819/19©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The new capital region of Andhra Pradesh state is in seismic zone III, and on the banks of Krishna River, with the expected population of 3 million in the next 5 years. The liquefaction potential of new capital region of Andhra Pradesh is assessed based on Standard Penetration Test borehole data of 463 locations. The simplified approach is used to estimate the factor of safety against liquefaction. A moment magnitude of 5.8, Peak ground acceleration of 0.16g is considered for estimation of liquefaction potential. The map of the capital region is prepared from the G.O.MS.No.253, and the factor of safety against liquefaction at the locations are plotted with respect to their latitudes and longitudes using AUTOCAD-2015 at a scale of 1:796875. The region is categorized into 4 zones based on factor of safety, where 11 locations fall in the zone of less than 1.5 and have a tendency to liquefy, 45 locations in the zone 1.5-2.5, 25 locations in the zone 2.5-4 and 382 locations in the zone greater than 4. It has been observed that most of the region is having cohesive soils in the top 3 m to 6m at different locations, hence this analysis revealed that majority of locations in the capital region are safe against liquefaction and requires soil amplification studies and only 11 locations near the Krishna River stream are observed to be susceptible to liquefaction.
Keyword: Liquefaction, Standard Penetration test, AP Capital Region, Peak ground acceleration, Factor of safety.
Scope of the Article: Quality Assurance Process, Standards, and Systems.