Computer aided drawing and cost estimation of civil engineering projects

Nielsen, Yasemin Özdoğan


Numerical simulation of unsteady flow in an oil pipeline under various hydraulic conditions
Turan, Emrah; Bozkuş, Zafer; Department of Civil Engineering (2006)
In the present study, transient flow analyses of a long oil pipeline are performed. Transient flow conditions are initiated by typical valve operations and pump trips that may be expected during operation of such pipelines. In order to simulate transient events an existing computer program called “Stoner Pipeline Simulator” has been used for a large number of hydraulic transient conditions. The program is based on the characteristics method solution of the governing water hammer equations. Locations that ma...
Linear static analysis of large structural models on pc clusters
Özmen, Semih; Toker, Kurç; Department of Civil Engineering (2009)
This research focuses on implementing and improving a parallel solution framework for the linear static analysis of large structural models on PC clusters. The framework consists of two separate programs where the first one is responsible from preparing data for the parallel solution that involves partitioning, workload balancing, and equation numbering. The second program is a fully parallel nite element program that utilizes substructure based solution approach with direct solvers. The first step of data...
Approximate analysis and condition assesment of reinforced concrete t-beam bridges using artificial neural networks
Dumlupınar, Taha; Hasançebi, Oğuzhan; Department of Civil Engineering (2008)
In recent years, artificial neural networks (ANNs) have been employed for estimation and prediction purposes in many areas of civil/structural engineering. In this thesis, multilayered feedforward backpropagation algorithm is used for the approximate analysis and calibration of RC T-beam bridges and modeling of bridge ratings of these bridges. Currently bridges are analyzed using a standard FEM program. However, when a large population of bridges is concerned, such as the one considered in this project (Pen...
Analytical examination of performance limits for shear critical reinforced concrete columns
Ergüner, Kamil; Binici, Barış; Department of Civil Engineering (2009)
Most of the older reinforced concrete (RC) buildings have columns that are deficient when the current code requirements are considered. Therefore, performance of the columns determines the performance of the structure under the effects of earthquake induced lateral loads. It is recognized that no provision is proposed in TEC2007 to estimate the failure type called flexure-shear. Behavior of columns having probability of failing in flexure-shear failure mode is mostly underestimated by TEC2007 procedures. In...
Optimum design of slurry pipelines
Yıldız, Burhan; Altan Sakarya, Ayşe Burcu; Department of Civil Engineering (2009)
There exist various applications of transportation of slurries through pipelines all over the world. In the present study, the problem is formulated as a "transportation problem" to determine the pipe diameters and amounts of slurry to be transported from the demand (production) points to the processing (factory) points. The minimization of the cost consisting of the pipe and energy cost terms is considered as the objective function to determine the stated decision variables. Pipe cost is given as the funct...
Citation Formats
Y. Ö. Nielsen, “Computer aided drawing and cost estimation of civil engineering projects,” Ph.D. - Doctoral Program, Middle East Technical University, 1995.