With the wide application of composite foundation technology, there have been some relatively perfect theories and methods for the performance analysis of composite foundation under rigid base, while those for the performance analysis of composite foundation under flexible base are still not ripe.
Based on the test results and bearing formula for DJCM Pile composite ground under rigid foundations, it raises the design formula for the bearing capacity of DJCM Pile composite ground under flexible foundations.
In this paper, the behaviors of a new type composite foundation (pile composite foundation under flexible basement) were systematically studied by means of model hypothesis, theoretical analyses, numerical analyses and engineering application.
The main contributions are as follow:1. Hypothesized the model of pile composite foundation under flexible basement, analyzed the bear's transfer mechanism and deformation model of composite foundation, and put forward the importance of researching settle deformation of reinforced region.
The major work involved in this paper is as follows:Based on the predecessors' research findings, the load transfer mechanism of composite ground under flexible foundation is put forward, which include fill arching effect, stiffness effect of foundation, cushion influence, load transfer induced by the differential settlement between the piles and soil and bearing capacity of the underlying soil. And all the above five factors must be included in the analytical models to reflect the actual properties of composite foundation under flexible basement.
Different T-joint configurations bonded to a rigid base and to a flexible base were considered.
We propose that opening and closure of the valve occurs through movement of the flexible base/utricular membrane away from and toward the relatively rigid valve lip.
Finite element equations of each component of a HDD spindle system from the spinning flexible disk to the flexible base plate are consistently derived by satisfying the geometric compatibility in the internal boundary between each component.
G292 osteoblastic cells were cultured in dishes made with a flexible base of polytetrafluoroethylene (PTFE) and stretched (～1% strain level) continuously for 48 hours.
Dynamic Response and Stability of a Rotating Asymmetric Shaft Mounted on a Flexible Base