摘要
隧道通过水泥土挤密桩在重载铁路砂质湿陷性新黄土隧道现场施工中的应用,验证了水泥土挤密桩在隧道有限空间中的适用性,采用非振动方式有效地控制了对隧道施工安全的影响。通过单桩承载力现场试验,表明在大断面重载铁路黄土隧道中,水泥土挤密桩隧底加固作用良好,对控制地基沉降和消除湿陷性作用明显,为类似地质重载铁路隧道基底加固提供借鉴。
The application of cemented soil piles in the construction of new LOESS tunnel with Sandy subsidence in heavy railway confirmed the applicability of cemented soil piles in the limited tunnel space,and the impact on the safety of tunnel construction was effectively controlled by non-vibration method.Through the field test of single pile bearing capacity,it is shown that in the LOESS tunnel of large section heavy railway, the cementing effect of cemented soil piles is good,which is obvious for controlling foundation settlement and eliminating wet subsidence,and provides reference for the cementing of similar Geological heavy railway tunnel.
作者
雷青川
Lei Qingchuan(China Railway 20th Bureau Group Co. Ltd., Xi’an Shanxi 710016)
出处
《工程技术研究》
2019年第6期15-17,共3页
Engineering and Technological Research
关键词
重载铁路黄土隧道
湿陷性砂质新黄土
水泥土挤密桩
单桩复合地基承载力试验
heavy duty railway loess tunnel
wet sand new loess
soil and cement compaction piles
single pile composite foundation bearing capacity test
作者简介
雷青川(1982-),男,工程师,研究方向:铁路工程施工技术。
