Faculty Publications
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Item Performance of berthing structure under static and dynamic loading(CAFET INNOVA Technical Society cafetinnova@gmail.com 1-2-18/103, Mohini Mansion, Gagan Mahal Road, Domalguda, Hyderabad 500029, 2014) Yajnheswaran; Rao, S.In berthing structures, lateral forces are caused by impact of berthing ships, pull from mooring ropes and pressure of wind, current, wave and floating ice, seismic force, active earth pressure and differential water pressure, and vertical loads are due to self-weight of the structure and live load. In the analysis considered there is an expansion joint between berthing structure and diaphragm wall. The analysis is carried out using the finite element software PLAXIS 2D with absence of anchor and varying locations of anchor of diaphragm wall. In the case of static loading, the extreme displacement, and bending moment of the diaphragm wall were found to be about 0.07342m,24936.03knm/m respectively in absence of anchor. In the case of seismic loading of the structure, the maximum displacement and bending moment of the diaphragm wall were around0.0749m28263.68knm/m in absence of anchor condition. When anchor is provided the maximum displacement and bending moment were reduced to 0.00642m and 11830knm/m respectively. The variation of bending moment is 13.34% more in dynamic analysis than static analysis. The variation of displacement is 2%more in dynamic analysis than static analysis. © 2014 CAFET-INNOVA TECHNICAL SOCIETY.Item Non-linear analysis of 3D interaction of soil-diaphragm wall structure with different cross-sections(CESER Publications Post Box No. 113 Roorkee 247667, 2016) Yajnheswaran, B.; Rao, S.Diaphragm walls have been used throughout the world to construct deep underground structures, conventionally by using the Reinforced Cement Concrete (RCC).Stiffer walls attracts larger bending moment than flexible walls (Potts & Day, 1991). Research has shown that increase in wall flexibility increases displacement, hence reduction in bending moment. In this paper static analysis of diaphragm wall sections having different stiffness are carried out using PLAXIS 3D software for the load condition existing in deep draft berth of New Mangalore Port, India. The displacement and bending moment are found out for diaphragm wall sections and results are compared with the actual diaphragm wall section having 1.1m thick. For analysis, a single panel diaphragm wall section having 5m length with 2.5m center to center spaced anchors is modelled. Soil properties are considered as per the boreholes data’s obtained from New Mangalore Port. The results are validated with values derived from the design chart. © 2016 by International Journal of Ecology & Development.