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RISS 인기검색어
- 검색키워드
- 저자 : Poluraju, P. (검색결과 2 건)
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Sreenivasa Prasad Joshi,P. Poluraju,Umesh K. Singh 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.6
The experimental investigation was carried out to study the influence of dowel force of longitudinal flexural reinforcement of concrete beams. Due to intricacy involved in shear transfer mechanism accurate predictions of shear behavior was difficult to evaluate. The influence of shear in uncracked compression zone, aggregate interlocking, stirrups is well understood but contribution of dowel force was not clearly represented despite implied belief that dowel force is an important constituent in shear resistance. The idea of present study is to appraise shear resistance arising from dowel force with varying flexural reinforcement with shear reinforcement provided. A total of eight beams were cast and verified as parametric study. Four beams were provided with preformed diagonal tension cracks and another four beams were conventional beams. The study was carried out by keeping shear span to depth ratio and clear cover constant. Results obtained was studied from moment vs. displacement curve and strain vs. moment curve and compared with existing empirical formulas. It was noticed that aggregate interlocking is insignificant with shear reinforcement provided and beams with preformed diagonal tension cracks had exhibited greater structural behavior when compared to conventional beams.
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A study on response analysis of submerged floating tunnel with linear and nonlinear cables
Yarramsetty, Poorna Chandra Rao,Domala, Vamshikrishna,Poluraju, P.,Sharma, R. Techno-Press 2019 Ocean systems engineering Vol.9 No.3
This paper presents the comparison between SFT response with linear and nonlinear cables. The dynamic response analysis of submerged floating tunnel (SFT) is presented computationally with linear and nonlinear tension legs cables. The analysis is performed computationally for two wave directions one at 90 degrees (perpendicular) to tunnel and other at 45 degrees to the tunnel. The tension legs or cables are assumed as linear and non- linear and the analysis is also performed by assuming one tension leg or cable is failed. The Response Amplitude Operators (RAO's) are computed for first order waves, second order waves for both failure and non-failure case of cables. For first order waves- the SFT response is higher for sway and heave degree of freedom with nonlinear cables as compared with linear cables. For second order waves the SFT response in sway degree of freedom is bit higher response with linear cables as compared with nonlinear cables and the SFT in heave degree of freedom has higher response at low time periods with nonlinear cables as compared with linear cables. For irregular waves the power spectral densities (PSD's) has been computed for sway and heave degrees of freedom, at $45^0$ wave direction PSD's are higher with linear cables as compared with nonlinear cables and at $90^0$ wave direction the PSD's are higher with non-linear cables. The mooring force responses are also computed in y and z directions for linear and nonlinear cables.
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