Abstract
The geodetic and geotechnical techniques were accepted for monitoring and measurement of unique hydro-technical structures, i.e. of pier stability. The designed monitoring system for pier damage prevention has been realized at the experimental object of Klaipeda State Seaport. Cracks of pier concrete constructions were identified, measured and continuously observed by the application of crack-gauges for experimental measurement. The analysis of the results shows that cracks of chosen locations depend upon meteorological conditions, such as, for example, temperature. It influences the width of cracks in the pier concrete. The relations were obtained according to the created monitoring system of hydro-technical structure which estimates the influence of cracks of pier concrete to the structural damages.
Highlights
The piers of seaports are of several types and their functions are very important for the protection of the coast from the negative effect of the sea waves and storms
The results of the tests with crack-gauges “Geosense VWCM4000” which were located in places A and B are given as diagrams where the vertical axis represents crack width change ratio with the initial crack width (%), whereas the horizontal axis shows the temperature in situ
During the experimental period a huge data set was constructed for analysis of relationships between crack width and temperatures in the distinguished wind speed intervals
Summary
The piers of seaports are of several types and their functions are very important for the protection of the coast from the negative effect of the sea waves and storms. Main constructions of piers are made of stones that is why even a small damage of such a construction can cause painful subsequences. The main task is to determine the motion and frequency value of construction elements. The reason of such movements (displacements) can be settlements of pier foundations, degradation of the pier constituent elements or the influence of storms. Adequate estimation of the changes in the pier crack width and the establishment of its functional relations with the temperature and wind influences allows to determine premises for the qualitative estimation methodology and, for the structural damage prevention. The biggest threat that these negative factors can cause is the destruction of the object
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