| The water and earth pressure are the main load on the supporting structure of afoundation pit.Although the theory of estimating the water and earth pressures separately iscomplete and reasonable when making a foundation designing,the practical measurement isdifferent with the calculation results.The main reason is that,the water pressure calculationmodel isn’t accord with actual situation,and the the water pressure calculation models in thecurrent standard aren’t apply to all the situation.In this article, the author uses the femite element calculation program to analysis thewater pressure in both two sides of the pile and wall structure in different soil layerdistribution, summarizes the law of distribution of water pressure,which is influences by thefators such as the soil infiltration,supporting structure itself permeability and mixing pile.Combined with the actual situation, make a research on how the groundwater boundary offoundation pit influences the groundwater seepage field, on the basis of considering spaceeffect.And then,the author puts forward the water pressure calculation of new ideas andcalculation method, and uses FORTRAN language to make this new method in calculatingprocedures can be realized.For general foundation pit and water respectively these two different characteristics offoundation pit engineering situation and the calculation model, using the modified calculationprogram to get all kinds of the water pressure simplified calculation method for the differentconditions. Made the various calculation scheme into the form, then the readers can use themaccording to the specific needs of the project.Combined with two different types of practical engineering, the author calculates thewater pressure distribution by using the simplified method in this paper. By comparing withthe water pressure model of current standards, the author get a further indication that thesimplified method is feasible and has good reference value for the rest of the project practice. |
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