Diagnostics of Bridge Structures

• Inclination measurements
• Provision of dislocation of bridge support reinforcement
• Evaluation of bridge reinforcement corrosion
• Non-destructive concrete testing with use of Schmidt impact hammer 
• Core holes 
• Security of cavities and open zones behind lining e.g. above arches of old arch bridges 
• Measurements of ratio transformations of bridge structures 
• Measurements of concrete hydration temperatures
• Static load tests of bridges according to ČSN 73 6209
• Dynamic load tests of bridges according to ČSN 73 6209 (traffic, response analysis with a shaker, response to special excitation)
• Testing and diagnostics of bridges by means of a hydraulic shaker
• Complex diagnostics of bridge structure failures 
• Identification of bearing structures via modal analysis 
• Determination of dynamic parameters of bridges and their parts 

Bridges

Testing and diagnostics of bridges through the use of a hydraulic vibration exciter

• source of dynamic excitation of building structures (force from 0.5 to 10.0 kN, frequencies from 0.2 to 100.0 Hz)
• time behaviour of a force exciter is harmonic, periodic, generally deterministic or random
• harmonic excitation with constant exciting force amplitude in wide range of exciting frequencies
• direction of actuation of exciting force directed vector is either vertical or horizontal, but also general
• set of preparations for acceleration of an exciter and exciting force transmission into various constructions and their parts
• extensive equipment for control of operation of an exciter, measurement of force and building structure debugging

• basic evaluation of real condition and behaviour of a structure according to response to excitation by a vibration exciter
• determination of chosen dynamic characteristics of a bearing structure
• examination of theoretical static and dynamic calculation of a bridge according to experimental results

• determination of structure characteristics (geometric material stiffness, real edge conditions) by means of dynamic response
• evaluation of condition of both new and older bridges for purpose of decision making and designing

• global identification and localization of serious imperfections and other failures of a bearing system 
• local diagnostics of imperfections, failures, elements, parts and building details of bridge constructions

• global and local examination of dynamic parameters of bridges and their response to dynamic load during operation (vehicles, wind, seismic effects etc.)