DISCUSSION ON DEPTH MODIFICATION OF COHESIVE PILE COMPOSITE FOUNDATION BEARING CAPACITY

VDepth modification of the bearing capacity of a composite foundation involves project safety and investment． Due to lacking research and unified understanding in that issue，and based on the regulations of Technical Code for Ground Treatment of Buildings ( JGJ 79—2012) and related points of view in The Understanding and Use of the Technical Code ( JGJ 79—2012) ，the substance of depth modification of cohesive-pile composite foundation was analyzed and，two methods to predict the modified bearing capacity of pile and soil between piles were deduced． The suitability of the two methods was testified by an example，the principle and method to revise the bearing capacity were also presented．