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摘要:
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根据大量真空预压实际工程中孔隙水压力观测结果,提出了一套由实测孔隙水压力时程曲线,直接确定总超静水压力,进而计算孔隙水应力固结度的方法,回避了理论计算时被测点的应力增加总值、加固过程固结系数变化以及固结理论的基本假设和实际地基差异等因素造成的理论固结度与实际情况的差异。该方法经实际应用,效果较好。
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Based on the measured results of pore water pressure in many engineering works employing the vacuum preloading method, a method is proposed for calculating the degree of consolidation by way of calculation of the pore water stress with the time travel curves of measured pore water pressure to directly determine the total excess hydrostatic pressure, avoiding the difference between the theoretical degree of consolidation and the actual degree of consolidation caused by the difference between the actual soil mass and the total increment of stress at the measuring point during the theoretical calculations, variation of consolidation coefficient during the soil improvement and the basic assumptions of the consolidation theory. The method has proved to be satisfactory when it was practicall used.
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基金项目:
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作者简介:
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参考文献:
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[1] 天津大学.土力学与地基[M].人民交通出版社,1983.
[2] 李文平.饱和粘性土高压密过程中孔压及体应变变化试验研究[J].岩土工程学报,1999,(11).
[3] 魏汝龙.从实测沉降过程推算固结系数[J].岩土工程学报,1993,(3).
[4] 朱胜利.由实测沉降曲线推算地基最终沉降的双曲线法[J].港口工程,1993,(6).
[5] 陈环.真空预压法机理研究十年[J].港口工程,1991,(4).
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