SLO | EN

Objectives and competences

? The student learns a systematic approach to performing structural examinations. Learn to properly select and use geodetic, as well as electronic and optical measuring equipment to measure the response of structures to static and dynamic loads. ? The student learns key methods of measuring mechanical quantities under static and dynamic loads of structures. ? The student gets acquainted with the basic methods of identifying the properties of structures.

Content (Syllabus outline)

Contents of lectures: - general concepts concerning investigations of structures (the purpose of the investigation, specimens, loadings, surveying and physical measurements and observations) - geodetic methods of displacement measurements ( measuring angles and lengths, height differences) - basics of photogrammetry (3D data snooping) - -geodetic deformation analysis (Karlsruhe, Hannover, Delft,…) - - surveying networks for control measurements - - Surveying, analysis and presentation of geodetic results (error selection method, MNK offset, determination of probable value, 3D rendering of obtained results) - - external influences on geodetic measurements (calculation and influence of atmospheric correction on results, consideration of refraction), - - geodetic inprovisation (improvment of results), good practice, - - electronic measurement of mechanical and other quantities (basis, accuracy and measurement uncertainty, configurations of the measuring equipment and software for data acquisition, measurement of strains, displacements, accelerations, inclinations, forces, torsion moments, hydraulic pressure, rotational speed, non-contact transmission of the measuring signals on rotating parts of structures, temperature, automation of measurements) - use of calibration methods for indirectly measuring the displacements, forces and moments through the strain measurements - processing, analysis and display of measurement results (filtering of measurement signals, analysis of disturbances and their causes, identification of the characteristics of the observed structures on the basis of measured quantities - determination of stiffness, eigen frequencies, damping, assessing the remaining lifetime of the structure based on the results of measurements ...) - implementation of measurements on structures (the purpose of measurement, the problem of reference points for measuring displacements, determination of the number, position and the accessibility of measurement points, triggering and control of measurements, standards and regulations), examples of good practice - monitoring of structures in various stages of construction and diagnostic methods for faults and defects of structures on the basis of measurement results. Contents of exercises: - familiarization with measurement equipment, demonstration and implementation of individual measurements of displacements, strains, temperature, torque, forces, speed of rotation on simple structures in the lab) - static and dynamic bending test of a beam (surveying and electronic measurements of displacements, strains, load size, processing of measurement signals, evaluation and presentation of measurement signals and comparison with the calculated response) - demonstration and individual preparation of the measuring point for strain measurement on aluminum or steel cantilever bending element, implementation of the indirect force measurement with so prepared element after previous calibration - The load test on real simpler bridging structure is implemented, where measurements of strains, vertical displacements and accelerations are performed; measured results are evaluated and graphically presented. A comparative static and dynamic analysis of the observed object is performed by the FE method using a suitable software tool, the computational and measurement results are compared and the causes of differences between the two are analyzed. - - Demonstration of geodetic tracking of the target in motion and use in practice - - Geodetic monitoring on different structures, taking into account atmospheric correction with different surveying instruments

Learning and teaching methods

? lectures with practical demonstrations of measurement techniques in the classroom and laboratory, and on the field ? exercises in laboratory and on the field

Intended learning outcomes - knowledge and understanding

Knowledge and understanding: Student will manage the methods of measuring of the structure response to static and dynamic loadings. He (she) will be able to process, evaluate and visualize the measuring results. Downloadable/key skills and other attributes: Students will be able to obtain the information of structure behavior experimentally and on the basis of these results either to confirm the relevance of the calculation model or identify the basic characteristics of existing structure and thereby assess its current status.

Intended learning outcomes - transferable/key skills and other attributes

Students will be able to obtain the information of structure behavior experimentally and on the basis of these results either to confirm the relevance of the calculation model or identify the basic characteristics of existing structure and thereby assess its current status.

Readings

Osnovna/Basic: - J. Boersch & al.: Measurement Data Acquisition – Electrical measurement of mechanical and physical quantities, Süddeutscher Verlag onpact GmbH, 81677 Munich, 2012. - M.Tomaževič: Uvod v eksperimentalno analizo gradbenih konstrukcij, Univerza v Ljubljani, Ljubljana, 1991. - K.Hoffmann: An Introduction to Measurements using Strain Gages, Hottinger Baldwin Messtechnik, Darmstadt,1989 - K. Hoffmann: Practical Hints for the Installation of Strain Gages, Hottinger Baldwin Messtechnik, Darmstadt, 4th revised edition,1996 - Smernice Standardi (JUS, ASTM, DIN, SIST), ki obravnavajo preiskave gradbenih konstrukcij, - Z. Kapović, Geodezija v niskogradnji, Sveučičište u Zagrebu, Geodetski fakultet, 2010 Dodatna/Additional: - R.Vukotić: Ispitivanje konstrukcija, Gradjevinski fakultet Beograd, Naučna knjiga, Beograd, 1989. - Kovačič B., kamnik R., Praktična geodezija, učbenik, FG, Maribor, 2009 - B. Kovačič, predstavitve posameznih poglavij v diaprojekcijah (PPT) na Moodlu, 2020

Prerequisits

None

  • doc. doktor tehničkih znanosti Republika Hrvaška ROK KAMNIK, univ. dipl. inž. geod.
  • red. prof. dr. ANDREJ ŠTRUKELJ, univ. dipl. inž. grad.

  • Written exam or 2 written test: 50
  • Oral examination: 30
  • Seminar paper: 20

  • : 30
  • : 14
  • : 76

  • slovensko
  • slovensko

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