沙漠地区风积沙路基结构设计及施工

Design and Construction of Aeolian-sand Subgrade Structure in Desert area

以沙漠地区公路施工为背景,针对依托工程沙漠公路特殊路基处理和重难点问题,设计创新出一种砂砾土夹层风积沙路基结构.通过试验,揭示了各影响因素与砂砾土夹层风积沙路基性能的关系,并提出了一种干湿结合的砂砾土夹层风积沙路基施工工艺和碾压方法并进行应用.应用项目交工验收通车运行以来,风积沙路基填筑段路基使用性能良好,路面行车安全、舒适,未出现质量缺陷.该风积沙路基结构和施工方法可为沙漠地区风积沙路基填筑结构选择和施工工艺操作提供参考.

Taking the highway construction in desert area as the background,aiming at the special subgrade treatment and the difficult problems of highway engineering in the desert area,a kind of aeolian-sand subgrade structure with gravel soil interlayer is designed and innovated.The relationship between each affecting factor and the aeolian-san subgrade performance with gravel soil interlayer is revealed through the tests.A kind of construction technology and rolling method of aeolian-sand subgrade with gravel soil interlayer combined with dry and wet is proposed for application.Since the applied project is checked,accepted and open to traffic,the service performance of the subgrade in the aeolian-sand filling section is good,and the pavement driving is safe and comfortable without the quality defects.The structure and construction method of the aeolian-sand subgrade can be referred for the filling structure selection and the construction technology operation of aeolian-sand subgrade in the desert area.