Fluid Model Analye And Quality Control On Big Diameter Drilling Filling Pile

The theory of static, dynamics and hydromechanics were applied to analysis on the flow state of pouring underwater concrete with conduit placement method, the main analytic study is the method of theoretical analysis, combine construct practice, the assistant of foundation pile detecting result. Sets off the principle of pouring underwater concrete with conduit placement method first, Be based on the flow characteristic of underwater concrete in hole, Apply relevant theory of hydromechanics and diffuse principle to carry out analysis, Suggest that concepts such as the critical flow velocity affecting a diameter of underwater concrete in hole, Build the standard fluid state model, it is that flow state of underwater concrete in hole when adopting pouring underwater concrete with conduit placement method. Then, the fluid state has carried out classification on underwater concrete in hole, Divides the fluid state of underwater concrete in hole into four kinds the basic fluid state: completely stable fluid state and roll fluid state, partly stable fluid state and partly roll fluid state. Some viewpoints have been suggested that the different fluid state of underwater concrete in hole under different condition, and the condition was analyzed for its changes. Combine project practice again, analysis an impact of unlike fluid state over construct quality when drilling (punching) filling pile, Apply the theory of pouring underwater concrete with conduit placement method explain a little phenomenon appearing and the cause producing quality problem or the defect in construct drilling (punching) piles, And analysis influencing factor and quality control of the fluid state of pouring underwater concrete with conduit placement method. The main conclusion and suggestion have summed up the text finally, As well as brief have summarized the direction working further.