摘要
硅藻土是一种由硅藻遗骸为主的特殊岩土,分布具有区域性,目前尚缺少硅藻土地区高速铁路建设经验。依托杭绍台铁路项目,首次对嵊州地区硅藻土开展了旁压试验,并进行了承载力分析,得到该地区与深度相关的硅藻土旁压承载力计算公式。结合试验条件,将硅藻土的平板载荷承载力与旁压承载力进行对比,提出了嵊州地区深层硅藻土的平板载荷承载力估算公式。
Diatomite is a kind of special soil mainly composed of diatom remains with regional distribution.At present,there is rare construction experience of high-speed railway in diatomite area.Based on the Hangzhou-Shaoxing-Taizhou High-Speed Railway project,the pressuremeter test in diatomite in Shengzhou area is carried out for the first time.The bearing capacity is analyzed,and the calculation formula of the bearing capacity from pressuremeter test of diatomite related to the testing depth in this area is obtained.Combined with the test conditions,the bearing capacity of plate loading test is compared with that from pressuremeter test,and the formula to estimate the bearing capacity of deep-buried diatomite from plate loading test in Shengzhou area is put forward.
作者
刘洪涛
Liu Hongtao(China Railway Design Corporation,Tianjin 300251,China)
出处
《工程勘察》
2021年第9期14-18,共5页
Geotechnical Investigation & Surveying
基金
中国铁路设计集团有限公司科技开发重点课题(721812)。
关键词
硅藻土
旁压试验
平板载荷试验
承载力
diatomite
pressuremeter test
plate loading test
bearing capacity
