南京扬-巴区外道路软基处理及防护设计

介绍了扬-巴区外道路部分路段的设计,针对高填方路堤软土层厚度大且分布不均匀,易造成施工期路基失稳及沉降过大或不均匀沉降,高陡土质边坡易遭受雨水侵蚀破坏等工程问题,设计采用了砂垫层、塑料排水板、粉喷桩、换填土、垫隔土工布等综合措施进行软基处理并结合相应的道路排水、边坡防护措施,使该道路在施工期及运行期均未发生路堤失稳及工后沉降过大、边坡冲刷等不良现象。

Soft foundation treatment and protection design for road outside Yang-Ba area in Nanjing

The design of part of road outside the Yang-Ba area was introduced,in view of such engineering problems as high filled embankment,and that the soft soil layer is of deep thickness and of uneven distribution,and this is easy to cause the stability loss of roadbed during construction and may cause large settlement or uneven settlement,and the high soil slope is apt to submit the rain erosion and damage etc.Many comprehensive measures such as bedding sand,plastics drainage slab,drycement injection pile,replaced soil and placement of geotextile etc.are adopted for soft foundation treatment,and in combination with related road drainage and slope protection measures,no such unhealthy tendencies as loss of roadbed stability and big settlement and slope scouring etc,occurred during construction period and operation.