RingJiaozhou Bay Highwaybridgepile Foundation of a Special Program

Under the condition of the same stratum of buildings and public works facilities, the rationality of the pile foundation design and the choice of pile-type will be significant difference for the maximum of pile capacity. In the bridge pile foundation engineering practice for the high road ring Jiaozhou Bay, we analysis the rock conditions of pile bearing stratum, and propose design change recommendations for using the design of friction pile in the bedrock strata. When the friction pile formula changed for axial pressure bearing capacity of single pile to calculate, because the bottom of pile tip resistance play a important role, the long friction piles designed can be reduced dramatically. It does not only save the project cost, but also reduce the technical difficulty of large diameter ultra-long piles construction in hard rock formation to reduce the duration, the bridge complete ahead of schedule have a very important economic significance for the high road. The bridge completed for many years, it proof that the ideas of change pile design is correct, and the bridge is security and stability.