东北寒冷地区高等级公路软土地基沉降计算与分析

Calculation and Analysis of the Sedimentation of Soft Soil Groundwork for the Highway in Northeast Cold Areas

东北地区的软土地基沉降除了具有变形大、不均匀沉降大、沉降稳定历时较长的特点外,受地质和气候因素影响也较大,这极大地影响了道路的长期稳定和安全使用。这里结合塑料板排水法在东北寒区高等级公路软土地基处理中的应用研究课题,利用哈尔滨绕城高速公路软土地基沉降观测资料,分析了影响沉降的主要原因,利用二种计算方法对软土地基进行沉降计算并做了讨论分析,得出较为符合工程实际的结论。

The sedimentation of soft soil groundwork in northeast areas possesses the properties of big transformation, serious uneven sedimentation and long stable sedimentary period. In addition, geology and climate also have great influence on the long-period stability and safety of the highways. Combining the application of the method of drainage with drain bars dealing with the soft soil groundwork in the high-level roads in northeast cold areas, and based on the observatory sedimentary materials of soft soil groundwork in the highway around Harbin city, the paper analyzes the main reasons affecting sedimentation, calculates the sedimentation of soft soil groundwork by two methods and makes further discussion and analysis. The results are closely in accordance with the situation of actual projects.