T type steel bridge, the river, river on both sides of the main girder by cantilever pouring symmetrical design, no clear requirements,
Subgrade treatment:The road is located in the loess area for backfill soil do 80 road bed within all dug out 50 soil surface layer filling sand for public water sand point destroy the stability of the roadbed loess from the original design to change the original 80 public soil dug out the first intact rolling rolling fill 40cm soil surface again 40cm 5% lime soil on both sides of the design of blind ditch water
In collapsible loess two treatments: two impact rolling compaction than the two function of the sections all dynamic compaction process: first, clear the table; in accordance with the design requirements of playing grid soil deployment design; determine the mechanical compaction function (120 tons of rice and 60 tons of rice)In addition, due to the treatment of the collapsible loess structure, the structural treatment of the first pit excavation with tons of machinery to ensure the safety of the structureIn dealing with the Embankment Compaction Mechanism of soil particle skeleton body: three-phase inter particle pore water gas in the occupied compaction soil particles that re combination of squeezing pore shrinkage soil unit weight increase overall strength increase resulted in dense shape stability improved
The comprehensive understanding of asphalt pavement construction, road design, highway bridge design and construction, and the design and layout of highway related facilities deepen our understanding of the curriculum knowledge and make the practice of combining
