| 摘要 |
FIELD: construction, road engineering. ^ SUBSTANCE: invention refers to construction of cable-braced bridges. Method for geometric provision of design angle of guy fixation to bridge span including supports, pylons, guys with anchor devices, stiffening beam. In process of assembly works, changes in geometric parametres of structure elements are calculated for their shortening with account of impact from lower temperature in the region, and anchor device is installed at larger angle than design angle. Value of design angle increase is set by linear value öZ over geometric centre of through pylon channel, for instance by electronic tachometre, according to the following equation: öZ = öH + subsidence, where öH - difference in height of fixation of upper guy parts with relative change of length in the range of temperature variation; subsidence - average value of subsidence according to report of geodesic measurements. ^ EFFECT: increased vibration strength and wear resistance of guy fixations with bridge span. ^ 4 dwg |
