The Appilication Study Of CFG Compound Foundation In High-Railway Engineering

The CFG pile (concrete, fly ash and macadam pile) is a new dealing soft ground method which develops in recent ten years, which is an effective methed because of the low cost of construction and the high bearing capacity. The CFG pile of the Jing-jin city-railway is used in china for the first time. And the average depth is about 28 meters which is the longest in china.The passage concerned that we adopted the compound foundation treatment method of long screw pump pore-forming squeezing CFG piles according to geological conditions because of low nature ground bearing. Because the CFG piles which we haven't referenced in measured guide specifications in our country, especially in other construction of the process, through field-test and statistical estimation in the process, we conclude the method to solve it. Which include construction technology, construction point, the solution to some common questions, the reasonable solution to the quality and cost.The passage concerned that the price of the CFG piles than before comparing with the piles. The cost is one third to one second, which is a cost efficient design.