Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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RESEARCH CAPACITY, AND VEHICLE OPERATING CHARACTERISTICS OF BRIDGES

Gubarev V.Y. 1
1 Voronezh State Academy of Forestry Engineering and Technologies (394087
The article presents the results of a study of transport- performance bridge located in the Lipetsk region in range Terbunsky forestry. To recover the carrying capacity of the bridge on the left bank development support and direct participation of the authors of the works on injection grouting in the area of support. Based on laboratory studies was matched composition for grouting. The authors performed a statistical test of the bridge load. Bridge test showed that as a result of injection grouting restored pile foundation bearing capacity and deformation of the support stopped. To assess the reliability and effectiveness of repairs were carried out statistical tests of the bridge. The test load used columns KAMAZ trucks, which were installed on the roadway of the bridge in the provisions to ensure maximum effort and strain in the calculated cross sections . The intensity of the test load was 86 +92 % of design load H -13 , T-13. During the tests measured : all deflections river consoles mid suspension and mid- span of 1-2 ; local fiber strain for counting the edges of the beams at voltages at midspan 1 ... 2 m and at the reference section to the support 2; vertical and horizontal movement of the support 1. presents some recommendations and suggestions for the further operation of the bridge.