Dynamic Load Sharing of Combined Pile Raft Foundation (CPRF) for Reinforced Concrete Structures

IF 0.5 Q4 ENGINEERING, GEOLOGICAL

International Journal of Geotechnical Earthquake Engineering Pub Date : 2020-01-01 DOI:10.4018/ijgee.2020010102

Soubhagya Karmakar, R. Ranjan, V. S. Phanikanth

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引用次数: 1

Abstract

Combinedpileraftfoundation(CPRF)isoneoftheemergingconceptsforprovidingacost-effective and efficient solutions for heavily-loaded structures. However, predicting the behaviour of such foundations,especiallytheloadsharingbetweenraftandpileisachallengeduetoitsinherentcomplex interactions.Existinganalysismethodsareeitherboundwithinarangeofsimplifyingassumptions orsometimescomputationallydemanding.Hence,anattempthasbeenmadetoevolveasimpleand easilyimplementablemethodology,consideringnon-lineardegradingbehaviourofsoilinarational manner. The approach has first been validated with measured response during an experimental centrifugetestingofaCPRFinsoftMalaysiankaolinclayandaninstrumentedbridge(Impulsora) foundedinsoftclayeysoil.Subsequently,arangeofcomparativeparametricevaluationofloadsharing andsettlementcharactersticshasbeencarriedoutwhichhasindicatedtheimportanceofpilelayout, lengthandnumberstoarriveatasafeandeconomicdesign. KEywoRDS Combined Pile Raft Foundation, Dynamic Load Sharing, Settlement, Stiffness Degradation

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钢筋混凝土结构组合桩筏基础的动力荷载分担

Combinedpileraftfoundation(CPRF)isoneoftheemergingconceptsforprovidingacost-effective以及针对重载结构的高效解决方案。然而，预测这些基础的行为，especiallytheloadsharingbetweenraftandpileisachallengeduetoitsinherentcomplex相互作用。Existinganalysismethodsareeitherboundwithinarangeofsimplifyingassumptions orsometimescomputationallydemanding。Hence，anattempthasbeenmadetoevolveasimpleand easilyimplementablemethodology，consideringnon-lineardegradingbehaviourofsoilinarational方式。该方法已经在一次实验中被验证过了centrifugetestingofaCPRFinsoftMalaysiankaolinclayandaninstrumentedbridge(impulse) foundedinsoftclayeysoil。Subsequently，arangeofcomparativeparametricevaluationofloadsharing andsettlementcharactersticshasbeencarriedoutwhichhasindicatedtheimportanceofpilelayout, lengthandnumberstoarriveatasafeandeconomicdesign。关键词桩筏组合基础，动力荷载分担，沉降，刚度退化

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来源期刊

International Journal of Geotechnical Earthquake Engineering ENGINEERING, GEOLOGICAL-

CiteScore

1.90

自引率

25.00%

发文量