Pounding in Nepalese school buildings

Ted Cross, Flavia De Luca, Raffaele De Risi, Tek Raj Rana, Tim Mitchell, Alan Sweetman

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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The seismic performance of a two storey RC school in Nepal is assessed using non-linear time history analysis (NLTHA). The school was constructed by Pahar Trust and utilizes a seismic gap to avoid issues caused by the torsional effect of the off centre stair case. A fibre model the of RC structure is implemented in finite element (FE) open-source software OpenSees, where NLTHA is employed to assess the seismic performances under different input motions. In particular, three sets of accelerograms are selected: (i) recorded waveforms of the 2015 Gorkha earthquake, (ii) a code-compatible selection compliant with pre-Gorkha earthquake probabilistic seismic hazard analysis (PSHA), (iii) a code-compliant selection compatible with post-Gorkha PSHA. The inter-storey drift demand and the effectiveness of the seismic gap is then assessed. The inter-storey drift values are used to verify the performances of the school against Eurocode 8 capacity limit. The seismic gap provides adequate clearance to avoid pounding when the structure is exposed to the Gorkha ground motions and life safety limit state (10% probability is 50 years) motions for pre-Gorkha PSHA. The structure exhibits pounding with a small number of the post-Gorkha ground motions. A fragility curve for pounding is finally obtained for the school using Cloud Analysis linear regression approach.
Original languageEnglish
Title of host publicationSECED 2019 Proceedings
Number of pages12
Publication statusPublished - 9 Sept 2019
EventSociety for Earthquake and Civil Engineering Dynamics Conference - Greenwich, London, United Kingdom
Duration: 9 Sept 201910 Sept 2019
Conference number: 2019


ConferenceSociety for Earthquake and Civil Engineering Dynamics Conference
Abbreviated titleSECED
Country/TerritoryUnited Kingdom
Internet address


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