| 摘要 |
FIELD: construction.SUBSTANCE: device to lower a bridge span onto permanent support parts includes support elements from a thermoplastic material and heating elements. Support elements from a thermoplastic material are arranged in the form of bushings, inside of every of which there are heating elements. The heating element is arranged coaxially to the longitudinal axis of the bushing at the equal distance from the outer and inner surfaces of the bushing. Around each of support elements there is a heat protective jacket made of an easily deformable material.EFFECT: higher reliability and accuracy of speed mode of span lowering.2 cl, 4 dwg |
