Soil Interaction of Building frame Resting on Clayey Soil: Effect of Change of Aspect ratio
Merin Salman Raju Koppula1, Ravi Kumar Reddy C2 

1Merin Salman Raju Koppula, PG Student, Civil Engg, KHIT-Chowdavaram, Guntur, A.P, India.
2Ravi Kumar Reddy C, Professor, HOD, Civil Engg, KHIT-Chowdavaram, Guntur, A.P, India.

Manuscript received on 12 March 2019 | Revised Manuscript received on 17 March 2019 | Manuscript published on 30 July 2019 | PP: 2875-2881 | Volume-8 Issue-2, July 2019 | Retrieval Number: B2149078219/19©BEIESP | DOI: 10.35940/ijrteB2149.078219
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Abstract: In General the framed structures are analyzed by considering that their bases are totally rigid (or) hinged. However, depending on relative rigidities of soil foundation and super structure the foundation undergoes deformation. In structural design the designers ignore the settlement response of the framed structure. The distribution of load on column and moment in framed structure transmitted to the foundation in the substructure has a crucial role in structural stiffness. Hence the analysis of the single bay single storied building frame resting on soil (CLAYEY SOIL) is taken for present study. The numerical analysis is carried out using ANSYS R16.0 by assuming that the base of the frame is resting on Soil (CLAYEY SOIL). The constant column height of 3M, while beam length varies of 6M,12M, &18M and their respective aspect ratio’s of 2,4&6. And for each aspect ratio the modulus of sub-grade reaction for clayey soil varies from 0.01 to 0.050N/mm3. The conventional analysis which assumes that the frame is resting on rigid support is carried out using ANSYS R16.0 by assuming the fixed base for the columns in the building frame when modulus of sub grade reaction varies from 0.01 to 0.050 N/mm3. The following conclusions have been drawn from the study, The percentage difference of shear force and bending moment in the beam, The axial load, shear force and, bending moment values in the column, and The bending moment values (Mx)&(Mz) in the shell and footing settlements in the shell for various aspect ratios of the frame obtained from both conventional and finite element analysis are not having considerable difference. Comparing numerical analysis which considers soil interaction with the conventional method, the conventional analysis is shown higher values SF and B.M in the beam, footing and columns. In conventional analysis it is assumed that the footings are resting on a rigid medium so footing settlements are zero. While observing the footing settlements in reality they undergo with some settlement therefore these settlement values are observed for numerical analysis which are used for the design to satisfy codal requirements.
Index Terms: Ansys, Building Frame Clayey Soils, Subgrade Modulus, Soil Structure Interaction.

Scope of the Article: Soil-Structure Interaction