Settlement Prediction And Reinforcement Of Subgrade Of Highway Over Soft Soil Foundation

With the development of national economy, infrastructure investment increase d, Road construction is swift and violent development all over the country. And whether in the coastal areas in China still or inland areas, roads inevitably to pa ss with poor geological conditions of soft clay layer region. Road is inevitable t o go through with poor geological conditions of soft clay layer region. Because of the foundation bearing capacity of soft soil subgrade is low, in under the acti on of load, the foundation settlement and uneven settlement, stable is also prone to accidents, and sedimentation stability lasted longer. Therefore, the stability an d settlement is two big difficult problem in construction of subgrade in soft soil area of technology.Soft soil roadbed settlement forecast and strengthening technology is the coll ection of geotechnical mechanics and engineering experience for the integration o f applied technology, calculation method and reinforcement measures varied, due to the complexity of soft soil engineering characteristics of subsidence prediction and design theory and calculation methods of strengthening technology is not pe rfect.On the basis of the actual project application, this paper studied the settleme nt prediction and reinforcement technology.1. For highway soft foundation treatment design and construction, the proble ms of rock mass parameters are difficult to accurately determine. Through on the basis of monitoring, comparing to the existing various theoretical system, using stratified summation method, curve fitting and grey system method, analyze the s ettlement calculation and forecast; On the basis of comparison and improvement of various calculation methods, to more accurately estimate the next phase of the construction settlement and the post-construction settlement is calculated.2. On the premise of perfect settlement calculation method, using the finite e lement analysis software to comparison and analysis of gravel pile reinforcement before and after the settlement, provide strong support for strengthening technolo gy.3. To soft soil roadbed stability, post-construction settlement, construction peri od as control target, in order to get a reasonable estimate of the late settlement and the method of response to its law of development, at the same time, help c onstruction enterprise to optimize use construction of low cost, high construction efficiency of soft soil subgrade treatment scheme, and establish theoretical analysi s for strengthening technology path.