| 客运专线无碴轨道红层泥岩改良土路基离心模型试验研究 |
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| 引用本文： | 张中云,蒋关鲁.客运专线无碴轨道红层泥岩改良土路基离心模型试验研究[J].铁道科学与工程学报,2010,7(5). |
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| 作者姓名： | 张中云 蒋关鲁 |
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| 作者单位： | 江苏省交通科学研究院,江苏,南京,210017;西南交通大学,土木工程学院,四川,成都,610031 |
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| 基金项目： | 铁道部科技攻关项目(2005K004-C(G)) |
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| 摘 要： | 红层泥岩是一种特殊岩土,其工程性质不能满足无碴轨道路堤填料要求,需对其改良。模型中的路堤采用4%的水泥进行改良、含水量为8.66%、压实度达到95%,通过红层泥岩路堤离心模型试验,得到施工期沉降、工后沉降与时间的关系,并与非改良红层泥岩的离心模型试验结果进行对比,从而确定红层泥岩路堤填筑施工参数;并分别对2种填料路堤进行数值模拟,对比试验和数值模拟的结果。研究表明:以改良红层泥岩为路堤填料可以使路堤沉降减小,满足了无碴轨道对路基填料的要求,数值模拟结果与试验结果基本相符。
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| 关 键 词： | 红层泥岩 改良 离心模型试验 沉降 无碴轨道 数值模拟 |
Research on centrifugal model test of improved red mudstone embankment for unallasted truck |
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| ZHANG Zhong-yun
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JIANG Guan-lu.Research on centrifugal model test of improved red mudstone embankment for unallasted truck[J].Journal of Railway Science and Engineering,2010,7(5). |
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| Authors: | ZHANG Zhong-yun JIANG Guan-lu |
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| Institution: | ZHANG Zhong-yun1,JIANG Guan-lu2(1.Jiangsu Transportation Research Institute,Nanjing 210017,China,2.School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | Red mudstone is a sort of special soil.Since its engineering character can't satisfy the requirement of embankment filler for ballastless railway,it must be improved.This paper presented the relations between construction duration,and post-construction settlement and time through simulating red mudstone embankment with filling of improved by 4% concrete and the 8.66% containing water and the pressed degree of 95% model.The result was compared with unimproved filling,and the filling parameters of embankment ... |
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| Keywords: | red mudstone improvement centrifugal model test settlement ballastless truck numerical simulation |
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