介绍软基加固技术的一种新思路

A NEW THINKING ON REINFORCEMENT TECHNIQUE FOR SUBGRADE IN SOFT SOIL ZONE

在时速200km及以上铁路软土路基设计施工中,如何缩短软基加固后固结沉降过程和如何准确有效地控制工后沉降量,是大家关注的两个重要问题。本文介绍了上海F1赛车场软基设计施工中的一些新思路,主要在于将基底加固技术与路基构筑技术视为一个整体,使不同高度路基同时在较短的时间内基本完成固结沉降,并使工后沉降量接近同一水平。尽管客运专线及高速铁路软土路基有其自身特点,与赛车场不尽相同,但如能在设计中适当地借鉴运用这种新思路,将有助于建成高质量的高速铁路软土路基。

How to shorten the process of consolidation settlement and control the settlement volume after reinforcing subgrade in soft soil zone,these are two important issues that should be paid attention to in design and construction of subgrade in soft soil zone of railway line with speed of 200 km/h and above. This paper gives an introduction to new thinking on design and construction of subgrade in soft soil zone of Shanghai Fl Velodrome, namely taking reinforcement technique for subgrade bottom and construction technique for subgrade as integration, basically completing consolidation settlement in short time for different high subgrades and making settlement of them close to the same volume. Although,the subgrade in soft soil zone of Passenger Dedicated Line is different from that of velodrome with its own features,but it is helpful to construction of high quality subgrade in soft soil zone of Passenger Dedicated Line railway by drawing an experience of velodrome in design.