THE MEASUREMENT AND CONTROL OF BUILDING VIBRATIONS IN COURSE OF SHEET PILE WALL AND FRANKI PILE DRIVING

2017 ◽  
Author(s):  
Wlodzimierz Brzakala
Keyword(s):  
Pile Driving ◽  
Sheet Pile ◽  
And Control ◽  
Measurement And Control ◽  
Sheet Pile Wall ◽  
Building Vibrations

scholarly journals Experimental evaluation of the effectiveness of the sheet pile wall breaking during vibration extraction of sheet piles

2021 ◽  
Vol 18 (3) ◽  
pp. 100-107
Author(s):  
V. M. Polunin ◽  
Keyword(s):  
Numerical Modeling ◽  
Experimental Evaluation ◽  
Sheet Pile ◽  
Dynamic Impact ◽  
Surrounding Soil ◽  
Observation Results ◽  
Sheet Pile Wall ◽  
Building Vibrations

The article presents the results of evaluating the effectiveness of breaking the sheet pile wall during vibration extraction of sheet piles. There have been carried out numerous measurements of the sheet pile wall vibrations, surrounding soil massif, foundations of the adjoining structure. The observation results have shown that the overall level of dynamic impact has significantly decreased in comparison with the closed wall. The zone of propagation of vibrations along a closed wall has been determined. The results of numerical modeling are presented. Comparison of the building vibrations for the case of «non-open» and «open wall» are made. Recommendations are given on the technological sequence of sheet pile extraction.

2. Measurement and Control of Airborne Microorganisms Using Electrostatic Methods

2001 ◽  
Author(s):  
G. Mainelis ◽  
R. Gorny ◽  
K. Willeke ◽  
S. Grinshpun ◽  
T. Reponen ◽  
...  
Keyword(s):  
Airborne Microorganisms ◽  
And Control ◽  
Measurement And Control

Analysis of the horizontal structure of a measurement and control geodetic network based on entropy

2013 ◽  
Vol 62 (1) ◽  
pp. 23-31 ◽  
Author(s):  
Maria Mrówczyńska
Keyword(s):  
Geodetic Network ◽  
The State ◽  
Observation System ◽  
Optimum Number ◽  
Optimum Structure ◽  
Horizontal Structure ◽  
The Difference ◽  
And Control ◽  
Measurement And Control ◽  
Horizontal Displacements

Abstract The paper attempts to determine an optimum structure of a directional measurement and control network intended for investigating horizontal displacements. For this purpose it uses the notion of entropy as a logarithmical measure of probability of the state of a particular observation system. An optimum number of observations results from the difference of the entropy of the vector of parameters ΔHX̂ (x)corresponding to one extra observation. An increment of entropy interpreted as an increment of the amount of information about the state of the system determines the adoption or rejection of another extra observation to be carried out.

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