非饱和土PS加固方法的初步分析  

Reinforcement of Unsaturated Soils via Potassium Silicate

作　　者：刘建明[1] 王英豪[1] 

机构地区：[1]河北省水利水电勘测设计研究院,天津300250

出　　处：《水科学与工程技术》2011年第2期50-52,共3页Water Sciences and Engineering Technology

摘　　要：非饱和土在实际工程中分布广泛,其工程特性复杂。在非饱和土力学中,应力理论和强度理论是非饱和土变形与稳定性分析理论中的重要基础。目前,非饱和土力学的理论框架、实验技术还处于基础研究阶段。在非饱和土的加固保护方面,有较为熟悉的常规的保护和加固方法,诸如换土处理、密实处理、排水处理、加筋处理、热学处理、灌浆法、搅拌法等。但这些常规的方法在对土遗址的保护和加固上有局限性。通过对比国内外对土遗址的保护,认为PS溶液的加固方法是比较合适的,其既可以改善土的力学强度,又不会改变土体的特性,从而保持了土遗址原有的面貌。Unsaturated soils are widely and display more complex behaviour compared with saturated soils in engineering practice.In unsaturated soils mechanics,the stress theory and strength theory are the important base theory for the deformation and stabilization.Theoretic frame and experimental technology of mechanics for unsaturated soil is at basic research period and has long way to reach the maturity of practice.There are some usual ways,such as,soil replacement method;densifying measures;drainage;adding tendons;calorifics measures;grouting;mix round and so on.But the usual ways for the reinforce of earthen sites are limit.According to the measures for the reinforce of earthen sites at home and foreign,the way of using PS is correct which can make the earthen sites better and keep the inherent properties.

关 键 词：非饱和土 强度理论 含水量 密度 PS加固 

分 类 号：TU435[建筑科学—岩土工程]