CONTROL JOINT FOR HIGHWAY BRIDGE Russian patent published in 2006 - IPC E01D19/06 

FIELD: building, particularly to built and repair highway bridges and to create control joints thereof.

SUBSTANCE: control joint comprises metal covering sheet fixedly located on rubber support from one side of vertical joint plane and movably laid on Teflon pier from another covering sheet side. The pier is arranged from bridge abutment side. Angle profiles having lower flanges facing each other are anchored in span structure from both sides of vertical joint plane correspondingly. The joint also has at least two cushioning metal net layers inserted between the angle profiles and above covering sheet and connected to vertical flanges of angle profiles by metal net ends. The cushioning metal nets are preferable resilient and/or pre-stressed by supports made as metal bars. The cushioning metal net has openings of not less than 15×15 mm dimensions and the nets are spaced apart a distance equal to not less than half of the net opening dimension. The cushioning metal nets are parallel to metal sheet and located in polymer-bitumen mastic layer laid on the metal sheet.

EFFECT: increased deformation capacity, simplified structure, improved reliability and maintainability.

4 cl, 2 dwg