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在软弱地基地段既有路基拓宽改造工程中 ,土工格栅复合砂垫层能够有效地加强新帮填路基与既有路基的整体性、提高地基的承载力和解决新旧路基的不均匀沉降 ,具有一定的实际应用效果和进一步推广的价值。鉴于目前应用多基于经验的基础上 ,没有成套的理论作指导 ,查阅了有关资料 ,从理论和以往工作经验两方面归纳总结出一套设计计算方法 ,为实际工作提供方便。
In the process of widening and rebuilding existing subgrade in soft foundation, geogrid composite sand cushion can effectively enhance the integrity of new embankment and existing embankment, improve the bearing capacity of foundation and solve the uneven subsidence of old and new subgrade, A certain effect of practical application and further promotion of the value. In view of the current application of more based on experience, there is no set of theories for guidance, access to relevant information, from the theory and experience of previous work, summed up a set of design and calculation methods to facilitate the practical work.