Key Construction Technology of Long Pile with Large Diameter Under Ultra-thick Hard Rock in Ecological Reservoir Area
In view of the relatively complex construction environment of large-diameter long piles of bridges with ultra-thick hard rock conditions in the ecological reservoir area,conventional construction technology is prone to cause such problems as environmental pollution,slow drilling speeds in hard rock strata,and high maintenance costs.To protect the environment and facilitate construction,a new construction technology of pile foundations is proposed.Through the combination of DTH hammer and rotary drilling,the pile foundation construction is completed efficiently and quickly,and it is also environmentally friendly.Based on the engineering example,the related construction technology is elaborated in detail.
bridgespilessuper thick hard rockecological reservoir areaDTH hammerconstruction
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