中文摘要：

为了从理论上明确主次压缩各自对沉降的贡献，更准确地预测垃圾土的长期沉降，在垃圾土的压缩性质中，将主次压缩从荷载施加初便分别考虑，考虑垃圾土的降解对主压缩系数的影响，以及通过试验研究了应力对于次压缩系数和主固结完成时间的影响，结果显示，次压缩随着应力的增加而减小。结合降解模型及主次压缩模型提出了考虑降解、主压缩、次压缩三部分的沉降模型，并通过试验进行了验证。

英文摘要：

In order to explicate the contribution of primary and secondary compression to the settlement in theory and pre- dict the long-term settlement of municipal solid waste（MSW） accurately, the primary and secondary compression would be considered respectively from loading in the compression properties of MSW, and by considering the effect of the degra- dation of MSW to primary compression coefficient, the effects of stress on the secondary compression coefficient and pri- mary consolidation time are studied through experiments. The results show that the secondary compression would decrease with the stress increasing. Combined with the degradation model as well as primary and secondary compression model, a new settlement model considering the degradation, primary compression and secondary compression is put forward, which is proved with experiments.