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Biaxial bending of concrete members with applications to prestressed concrete power poles

Creator:: Stephens, Charles Talmon
Abstract:: A method of analysis of arbitrarily shaped prestressed concrete members for biaxial bending is given. The stress-strain curve of the concrete is represented by two parabolic segments, and the effects of strain hardening of the steel are included in the analysis. An iterative numerical procedure is used to solve for...
Resource Type:: Dissertation
Full Text:: in Figure 2.4 and is represented by the following equations. 0 < S s < S Fs = E 1 Sspi Sp/ < Ss

Wave forces on a horizontal circular cylinder near a plane boundary

Creator:: Wright, James Christopher
Resource Type:: Masters Thesis
Full Text:: range 10 3 < Re < 10 5 and U = 1.07 m/sec then fs = 0.7 Hz for this test cylinder. Thus, for the case

Some aspects of the biological metabolism of a partially colloidal substrate

Creator:: Berg, Richard Harold
Abstract:: An investigation was conducted to ascertain if certain concepts of microbial metabolism, derived from studies using simple soluble substrates, are applicable to the biological assimilation of complex, partially colloidal suspensions. A mixture containing one gram of Carnation dry-skim milk is considered to be a complex, partially colloidal substrate and was...
Resource Type:: Dissertation
Full Text:: what magnitude the substrate BOD is partitioned into syn- thesis (fs) and respiration or oxidation

An evaluation of coastal Oregon's marginal aggregates

Creator:: Clemmons, Gregory H.
Abstract:: Coastal Oregon is deficient in quality construction aggregates. There is, however, an abundance of lower quality, or marginal, aggregate available for construction purposes. An evaluation of these marginal aggregates is the purpose of this paper. There are four classes of marginal rocks found on the Oregon Coast. Basalts, high in...
Resource Type:: Masters Thesis

A large scale model study of placed stone breakwaters

Creator:: DeBok, Donald H.
Abstract:: The results of three hydraulic model tests to evaluate the stability of a placed stone breakwater are presented and discussed. The prototype breakwater was designed to protect offshore power and port facilities in 60 feet of water and was tested at scale ratios of 1:10, 1:20, and 1:100. The armor...
Resource Type:: Masters Thesis
Full Text:: force Fr Froude number Fs Resistance force g Acceleration of gravity H Wave height Hb Breaking wave

The analysis of directional wave spectra from current and pressure measurements

Creator:: Lin, Li-hwa
Abstract:: Directional wave spectra have been estimated in this study based upon simultaneous subsurface measurements of current and pressure. Two previously developed methods, the stochastic and deterministic approaches, have been reviewed and restudied. It is demonstrated by means of the Correlation Theorem that the stochastic and deterministic approaches are, under certain...
Resource Type:: Masters Thesis

Displacement response of transmission line conductors during random wind gusts

Creator:: Cameron, George Richardson
Abstract:: The mean square displacement response of a point on a transmission line conductor that is subjected to wind gust generated lift forces is computed. The wind gust velocity and wind gust generated lift forces are treated as random processes in both time and space. A lift force, that is velocity...
Resource Type:: Dissertation

Stochastic analysis of complex nonlinear system response under narrowband excitations

Creator:: Shih, I-Ming
Abstract:: Response behavior of a nonlinear structural system subject to environmental loadings is investigated in this study. The system contains a nonlinear restoring force due to large geometric displacement. The external excitation is modeled as a narrowband stochastic process possessing dynamic characteristics of typical environmental loadings. A semi-analytical method is developed...
Resource Type:: Dissertation
Full Text:: parameter 201-2. The uniformly distributed marginal probability density function of the phase process is

Seasonal variations in tidal dynamics, water quality and sediments in the Siuslaw Estuary

Creator:: Utt, Michael Ernest
Abstract:: Seasonal data on tides, water quality and sediments in the Siuslaw Estuary were collected. Tide and velocity data were analyzed to evaluate damping conditions in the estuary. The system was found to approximate a weakly damped standing wave. A strong relationship of damping conditions to river flow was observed. The...
Resource Type:: Masters Thesis
Full Text:: VERSUS DAILY MEAN RIVERFLOW, DAVIDSON I 100 200 500 1000 2000 5000 10,000 201)00 50,000 MEAN DAILY

An evaluation of the cubic autotape under dynamic conditions

Creator:: Plasker, James Robert
Abstract:: Accuracy requirements for positioning a vessel in the near shore area have increased in recent years. To meet these requirements several electronic positioning systems have been developed. One such system is the Cubic Autotape Model DM-40. The Autotape is a circular positioning system which utilizes the phase comparison between transmitted...
Resource Type:: Masters Thesis
Full Text:: .301 .373 STATION DELTA X DELTA Y 2 .207 .292 :358 1 .000 41.080 3 .201 .285 :349 2 .000 41.800 4 .281

ScholarsArchive@OSU

Biaxial bending of concrete members with applications to prestressed concrete power poles

Wave forces on a horizontal circular cylinder near a plane boundary

Some aspects of the biological metabolism of a partially colloidal substrate

An evaluation of coastal Oregon's marginal aggregates

A large scale model study of placed stone breakwaters

The analysis of directional wave spectra from current and pressure measurements

Displacement response of transmission line conductors during random wind gusts

Stochastic analysis of complex nonlinear system response under narrowband excitations

Seasonal variations in tidal dynamics, water quality and sediments in the Siuslaw Estuary

An evaluation of the cubic autotape under dynamic conditions

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