流态固化土回填电力管廊抗震性能研究OA

As an important part of city"lifeline engineering",the study of seismic performance of power pipe corridor is very important to reduce secondary disasters and economic losses.The fluid solidified soil is formed by mixing urban waste soil with curing agent and has certain strength,fluidity and self-compacting effect,which can better control the backfilling quality of power pipe corridor foundation pit.Based on a power pipe corridor project in Jiangbei New District of Nanjing,the change regularity of physical and mechanical properties of fluid solidified soil with mix proportion is investigated through laboratory tests.By using PLAXIS software,the calculation model of power pipe corridor is established to compare and analyze the seismic performance of power pipe corridor under different backfill materials.The research results show that compared with other backfill materials,the fluid solidification soil backfilling technology can solve the problem of poor compaction in the backfilling of power pipe corridor trenches,and enhance the seismic performance of power pipe corridor.