饱水黏性土释水响应压力规律研究

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摘要利用亲水性各异的饱和黏性土在不同压力条件下的压密试验，开展饱水黏性土体中弱结合水与应力、亲水性之间关系的研究。结果表明：随着外界压力增加，土体孔隙比达到某一临界值后，土体中弱结合水才随着孔隙比减小而排出，且所排出的孔隙水总量与土体体积总压缩量并不相等；在试验条件下，排水总体积大于土体压缩总体积，两者的差值随外界压力增加而呈非线性关系的增大；黏性土体的亲水性，对弱结合水排出的临界孔隙比和上述非线性关系有直接影响；对不同亲水性土体中的上述非线性关系，依据试验实测数据，构建相应的函数关系。试验成果可为相关的研究提供参考。

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	张炳峰1
	赵坚1
	陶月赞2

关键词 ：土力学, 饱和黏性土, 弱结合水, 土体应力, 孔隙比, 亲水性, 非线性关系

Abstract：Base on compaction test for saturated clay of different hydrophilic properties under different pressures，the relationships between hydrophilic property，film water and stress are researched. The results show that，with the external pressure increasing，the film water in soil discharges along with void ratio reduces when the void ratio reaches a critical value，and the volume of pore water discharged is not equal to the soil compression volume. Under the test conditions，volume of pore water discharged is lager than soil compression volume and the difference between the two increases nonlinearly with external pressure. The hydrophilic property of soil has direct influences on the nonlinear relationship and the critical porosity of film water discharged. Based on the test data，relevant function relationships of different soils with different hydrophilic properties are established. The test results can provide reference for related research.

Key words： soil mechanics saturated clay film water soil stress void ratio hydrophilic property nonlinear relationship

引用本文:

张炳峰1，赵坚1，陶月赞2. 饱水黏性土释水响应压力规律研究[J]. 岩石力学与工程学报, 2012, 31(S1): 3203-3208.
Zhang Bingfeng1，Zhao Jian1，Tao Yuezan2. LAW STUDY OF SATURATED CLAY DISCHARGE WATER RESPONSE WITH PRESSURE. , 2012, 31(S1): 3203-3208.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2012/V31/IS1/3203

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