[1]吴沛沛,陈伟志,丁兆锋.高烈度区盐湖软弱盐渍土地基加固关键技术[J].高速铁路技术,2018,9(02):37-42.[doi:10.12098/j.issn.1674-8247.2018.02.009]
　WU Peipei,CHEN Weizhi,DING Zhaofeng.Key Technology of Soft Saline Soil Foundation Reinforcement of Saline Lake in High Intensity Area[J].HIGH SPEED RAILWAY TECHNOLOGY,2018,9(02):37-42.[doi:10.12098/j.issn.1674-8247.2018.02.009]
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高烈度区盐湖软弱盐渍土地基加固关键技术()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
9卷
期数:
2018年02期
页码:
37-42
栏目:
出版日期:
2018-03-15

文章信息/Info

Title:
Key Technology of Soft Saline Soil Foundation Reinforcement of Saline Lake in High Intensity Area
文章编号:
1674—8247(2018)02—0037—06
作者:
吴沛沛;  陈伟志;  丁兆锋
中铁二院工程集团有限责任公司, 成都 610031
Author(s):
WU Peipei;  CHEN Weizhi;  DING Zhaofeng
China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China
关键词:
高烈度|盐湖|盐渍土地基|加固技术|高速铁路
Keywords:
high intensity area|saline lake|saline soil foundation|reinforcement technology|high-speed railway
分类号:
U416
DOI:
10.12098/j.issn.1674-8247.2018.02.009
文献标志码:
A
摘要:
本文结合伊朗德黑兰至伊斯法罕高速铁路建设，以高烈度区Hoze Soltan盐湖并存的富盐盐渍土、深厚松软土、液化砂土等3种特殊岩土为对象，开展了软弱盐渍土地基加固方案比选及关键技术研究。结果表明：（1）从符合稳定性、承载力及沉降控制标准而言，桩网结构、桩筏结构、桩板结构均适用于Hoze Soltan盐湖软弱盐渍土地基加固；（2）综合对比施工条件、工程投资及业主需求，推荐了CG桩或预制桩桩网结构作为软弱盐渍土地基的加固方案；（3）进一步地在优化设计的基础上，研发了具有排盐、抗溶陷、抗盐胀及抗侵蚀的桩网结构，并提出了抗溶陷加筋垫层土工格栅拉力设计值的确定方法。研究结果可为高速铁路以长路基通过内陆大盐湖地基加固设计提供参考。
Abstract:
Combined with the construction of Tehran-Isfahan high-speed railway in Iran, taking three kinds of special soils of Hoze Soltan saline lake in high intensity area as the objects, such as salt-rich saline soil, deep soft soil and liquefied sand, The comparison of reinforcement proposals of soft saline soil foundation and key technologies researches are carried out. The results indicate:(1) the pile-net structure, pile-raft structure and pile-slab structure can be used as foundation reinforcement of Hoze Soltan saline lake in accordance with the control standards of stability, bearing capacity and settlement; (2) comprehensive comparison of construction conditions, project investment and owner’s requirements, the proposal of CG pile or precast pile-net structure is suggested to reinforce the soft saline soil foundation; (3) based on the optimized design, a pile-net structure with salt drainage, resist collapse, resist salt expansion and resist erosion is developed, and a methodology to calculate the tensile design value of reinforced geogrid to resist collapse is proposed. The research results can be used as a reference to design the soil foundation reinforcement of saline lake under long embankment of high-speed railway.

备注/Memo

备注/Memo:
作者简介：吴沛沛（1982-），男，高级工程师。基金项目：中国铁路总公司科技研究开发计划项目（2017G008-C）引文格式：吴沛沛, 陈伟志, 丁兆锋. 高烈度区盐湖软弱盐渍土地基加固关键技术[J]. 高速铁路技术,2018,9(2):37-42.WU Peipei, CHEN Weizhi, DING Zhaofeng. Key Technology of Soft Saline Soil Foundation Reinforcement of Saline Lake in High Intensity Area[J]. High Speed Railway Technology, 2018, 9(2):37-42.
更新日期/Last Update: 2018-04-28