COMPUTER STUDIES OF DAMAGE TO JOINTS ON PRESTRESSED CONCRETE BRIDGES

SPEZIELLE RECHNERISCHE UNTERSUCHUNGEN IM ZUSAMMENHANG MIT SCHADENSFAELLEN AN KOPPELFUGEN VON SPANNBETONBRUECKEN

ON THE BASIS OF EDV PROGRAMS THE STRAINS IN CONNECTING JOINTS ARE STUDIED BY THE METHOD OF FINITE ELEMENTS, TAKING INTO ACCOUNT THE CONSTRUCTION PROCESS AS WELL AS THE CONTINUING INCREASE OF THE E-MODULUS, THE DECREASE IN CREEP POSSIBILITY AND THE DEFORMATIONS DEPENDENT ON THEM. IN THIS WAY THE BASIS FOR A SUITABLE MEASUREMENT FOR THE CONNECTING JOINTS OF PRE-STRESSED CONCRETE BRIDGES SHOULD BE PRODUCED. IN COMPARABLE BUILDING STRUCTURES THE DIFFERENT CRACK FORMATIONS ARE EXAMINED IN ORDER TO EXPLAIN THEIR CAUSE, ON THE BASIS OF PREVIOUS TECHNICAL BUILDING SPECIFICATIONS. THE STRAINS ARE CALCULATED FOR THE PROBLEM DESCRIBED FOR REPRESENTATIVE SUPERSTRUCTURE CROSS SECTIONS.