真空-堆载联合预压法加固高速公路软基现场试验研究

随着我国大规模的建设热潮，真空预压法也得到进一步的广泛应用，在机理研究、施工工艺、设计理论等方面得到了较大的发展，但同工程实践相比理论研究相对滞后，不少理论问题仍未能得到圆满解决，因此制约了该方法的进一步推广和应用，引起学术界和工程界的广泛关注。结合现场试验对真空预压法的加固效果进行研究，分析真空预压下的地下水位变化、孔隙水压力变化、真空度变化、路基沉降、侧向位移变化等问题，其结果将对真空预压法施工及设计有所帮助。

Field Experimental Study on Reinforcement of Highway Soft Foundation by Vacuum-surcharge Preloading

As large scale of construction upsurge in our country, vacuum preloading is further applied with its mechanism study, construction process and design theory developed greatly. However, comparing to engineering practice, the theoretical study is delayed with many theoretical issues not solved completely, constraining its further application and attracting extensive concern in academic and engineer circles. Combined with field experiment, the reinforcing effect by vacuum preloading is studied and the changes of groundwater level, pore water pressure, vacuum degree, s e settlement, and lateral displacement under vacuum preloading are analyzed. The results will be useful to the construction and design.