PSI - Issue 70

Pradhumn Agrawal et al. / Procedia Structural Integrity 70 (2025) 113–120

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2. Method of Analysis Models are analyzed using static method or EFSM. Analysis is done using software ETABS v22. ESFM analysis is carried out and result for different sloping ground are compared for study the behavior of structure. 3. Results and Discussion The result of EFSM is analyzed to find out the behavior of structure in terms of different parameter like (time period, base shear and displacement) considering effect of sloping ground and SSI. 3.1 Time period(T) That variation for models shown in Fig.5 and variation (%) of this because of consideration of SSI effect are given in table 2 and 3. It is found that with slope increment, time period gets reduced. The decrement in length of column shows enhancement in stiffness of structure, which result in time period reduction. In comparison with SB building time period gets reduced for SBS building. All the models where SSI is taken in account shows increase in time period as compared to the model having fixed base, because of increase in flexibility of the base of structure.

Table. 2. Percentage variation of time period Model name Reduction (%) of time period

increment (%) of time period due to SSI

MFS15 MFS30 MFS45

30.09 23.18

15.94 27.46 35.96

2.04

Table. 3. Percentage variation of time period Model Name

Percentage decrement of time period in comparison of SB v/s SBS

Percentage increment of time period due to SSI

MSS15 MSS30 MSS45

16.20 23.67 40.96

29.60 40.39 65.85

Fig.5. Time period of models