丰沙线北京广宁路公铁立交桥路基加固工程历时4个多月的艰苦奋战,于4月20日将桥框顺利顶进到位。经测试,加固后的粉砂层路基,各项物理力学指标均达到设计要求。在顶进过程中确保了铁路通畅和立交桥施工安全,打通了公路进京最后一个咽喉地段,为缓解首都公 Fengsha Line Beijing Guangning Road Subway Overpass Subgrade Strengthening Project lasted more than four months of hard work, on April 20 the bridge frame smoothly into place. After testing, silt layer after the consolidation of the road, the physical and mechanical indicators have reached the design requirements. In the process to ensure the progress of the railway patency and overpass construction safety, opened up the road to Beijing last pharyngeal lot, to ease the capital of the public