The Research On Small Addendum Modification Of Expansion And Contraction Of Bridge And Culvert

Now diseases that appear after fixxing the bridge and culvert expansion joint device has a strong impact on the normal operation, which has caused continuous maintenance of dilatation joint and it also raises the instruction costs.about this defect, the text has reseached the elastoplastic on small assendum modification, and Adopting elastic mechanics to analyze metachoresis of dilatation joint; Adopting orthogonal test to make the composite design of elastoplastic material; Making research on the lastoplastic mixture and its performance in casting experimental method;Making research on construction technics of casting lastoplastic mixture. The mainly content is as follows:(1)Analyze the dislocation of small assendum modification of bridge and culvert dilatation joint;(2)The reseach of elastoplastic material in the elastic-plastic expansion joint device;(3)Based on the aspect of expansion joint device, the test of elastic-plastic body mixture has been carried out;(4)Raw up construction regulations of elastic-plastic dilatation joint by the testing dilatation joint construction.The device that the text in research has been a travelling steady, a beautiful in deck design, and it has solved the waterproof of bridge-culvert, in the meantime, it can absorb the deformed and the vibration, which making the device have a life-time dilation, also the crack problem between the ends and the filler has been solved.