天津市滨海新区盐渍土路基处治技术研究
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摘要
针对天津滨海地区具有四季温度变化大、地下水位埋藏浅、土的粘粒含量高、毛细水上升高度大、降水量大且集中等自然条件,使得滨海盐渍土形成春季积盐、表层含盐量大、毛细作用强烈的特点,结合当地材料供应现状,研究无机结合料加固氯盐渍土用于路基填料。课题首先测试分析了滨海氯盐渍土的土工性质,针对滨海新区土性,利用石灰、粉煤灰等无机结合料单一或组合加固滨海氯盐渍土,在试验研究各种加固土压实的基础上,对加固滨海氯盐渍土的力学性能和路用性能进行系统研究,包括不同龄期无侧限抗压强度、加州承载比、界限含盐量、抗冻性能、温缩性能、水稳定性、抗压模量等。在抗冻性能研究中,提出冻融稳定次数和抗冻稳定系数评价指标。采用灰色关联理论和偏离度指标,对不同配合比的加固效果进行综合性能评价,针对滨海地区的特点,提出了盐渍土填筑于路堤的不同含盐量范围下的适宜配合比。利用X-Ray衍射确定不同龄期加固土的生成物,同时采用扫描电镜观察生成物的形貌,通过形貌推测生成物的类型,验证X-Ray衍射试验结论。系统研究无机结合料加固氯盐渍土的微观加固机理。针对盐渍土路基盐胀、溶陷等主要破坏形式,采取结合料加固技术和隔离层技术进行综合处治措施,确保路基耐久性和良好的路用性能。
In condition of great temperature difference, upper underwater table, much clay, more height of capillary rise, higher precipitation intensity, etc., saline soil in Binhai new area show features as follows: salt accumulation in the top in spring, salt crystallizing with the density of salt resolution, serious capillary action. Considering of the local material's current situation, inorganic binding materials was used to consolidate chlorine saline soils as Subgrade padding. This topic first test and analyze the chlorine saline soil's geotechnical properties in the Binhai area, and then on the basis of the obtained geotechnical properties, lime and fly ash was used to consolidate chlorine saline soil in Binhai area singly or mixed. After the compaction experiments on many kinds of consolidated soil, a systematic study on the mechanical properties and road-relate performance of consolidated chlorine saline soil was carried out, including the research on unconfined compression strength of different ages, California bearing ratio(CBR), limit salinity, anti-frozen performance and thermal shrinkage performance, water stabilizer performance, compressive resilience modulus, etc. In the research of the properties of frost resistance, a evaluation index of freeze-thaw stability times and anti-frozen stability coefficient have been proposed. Consolidation effect of different mix ratios have been comprehensive evaluated via the grey correlation theory and degree of deviation. On basis of the soil features of Binhai new area, proper mix ratios under different salinity saline soil which will be used for filling the embankment was proposed. The structure and morphology of the products from consolidation soil with different ages are characterized by X-ray powder diffraction (XRD) and field-emission scanning electron microscopy (FESEM). The morphology of the products infered the type of the products and test the results of XRD. The consolidation mechanism of inorganic binding materials to consolidate chlorine saline soil was systematicly studied. Binding material's strengthening technique and isolation layer technique was used to treat with salt dilate and collapsibility which are caused by saline soil in order to ensure the Subgrade durability and well road performance.
In condition of great temperature difference, upper underwater table, much clay, more height of capillary rise, higher precipitation intensity, etc., saline soil in Binhai new area show features as follows: salt accumulation in the top in spring, salt crystallizing with the density of salt resolution, serious capillary action. Considering of the local material's current situation, inorganic binding materials was used to consolidate chlorine saline soils as Subgrade padding. This topic first test and analyze the chlorine saline soil's geotechnical properties in the Binhai area, and then on the basis of the obtained geotechnical properties, lime and fly ash was used to consolidate chlorine saline soil in Binhai area singly or mixed. After the compaction experiments on many kinds of consolidated soil, a systematic study on the mechanical properties and road-relate performance of consolidated chlorine saline soil was carried out, including the research on unconfined compression strength of different ages, California bearing ratio(CBR), limit salinity, anti-frozen performance and thermal shrinkage performance, water stabilizer performance, compressive resilience modulus, etc. In the research of the properties of frost resistance, a evaluation index of freeze-thaw stability times and anti-frozen stability coefficient have been proposed. Consolidation effect of different mix ratios have been comprehensive evaluated via the grey correlation theory and degree of deviation. On basis of the soil features of Binhai new area, proper mix ratios under different salinity saline soil which will be used for filling the embankment was proposed. The structure and morphology of the products from consolidation soil with different ages are characterized by X-ray powder diffraction (XRD) and field-emission scanning electron microscopy (FESEM). The morphology of the products infered the type of the products and test the results of XRD. The consolidation mechanism of inorganic binding materials to consolidate chlorine saline soil was systematicly studied. Binding material's strengthening technique and isolation layer technique was used to treat with salt dilate and collapsibility which are caused by saline soil in order to ensure the Subgrade durability and well road performance.
引文
[1]《公路路基设计规范》(JTG D30-2004)[S],人民交通出版社
[2]周琦,韩文峰,邓安等,《滨海盐渍土作公路路基填料试验研究》[J],岩土工程学报,2006,28(9),1177-1180
[3]铁道部第一勘察设计院,《盐渍土地区铁路工程》[M],中国铁道出版社,1988
[4]刘付华,郭英,曹权等《滨海盐渍土改良与利用新途径试验研究》[J],天津城市建设学院学报,2005,11(4):254-257
[5]耿恩朋,《无机结合料加固细氯盐渍土路用性能及其机理研究》[D],长安大学硕士论文,2006.6
[6]王思敬,黄鼎成,《中国工程地质世纪成就》[M],北京:地质出版社,2004,1-21
[7]Raphael Grosl,Franck Poly,Lucile Jocteur Monrozier and Pierre Faivre.Plant and soil microbial community responses to solid waste leachates diffusion on grassland [J].Journal of Plant and Soil,2003,255(2):445-455
[8]Ali A.Abdulla and Panos D.Kiousis.Behavior of cemented sand testing[J].InternationalJournal for Numerical Methods in Geomechanics,1997,21:533-547
[9]Raphael Gros,Jerome Poulenard,Lucile Jocteur Monrozier and Pierre Faivre.Soil physical-chemical changes following application of municipal solid waste leachates to grasslands[J].Journal of Water,Air&Soil Pollution,2006,169(1):81-100
[10]N.Roth-Bejerano,S.Mendlinger and V.Kagan-Zur.Effect of calcium on growth of submerged Terfezia boudieri mycelium[J].Journal of Mycoscience,2004,45(1):30-34
[11]Klich,L.Wilding,L.Drees.Trace metal and mineral speciation of remediated wastes using electron microscopy[J].Journal of Analytical and Bioanalytical Chemistry,2003,376(3):436-443
[12]陈肖柏,刘建坤,刘鸿绪等,《土的冻结作用与地基》[M],北京:科学出版社,2006,170-205.
[13]虞海珍,李小青,姚建伟《膨胀土化学改良试验研究分析》[J],岩土力学,2006,27(11),1941-1944
[14]黄晓波,周立新,何淑军等《浸水预溶法处理盐渍土地基试验研究》[J],岩土力学,2006,27(11),2080-2084
[15]周琦,《滨海盐渍土作公路路堤填料试验研究》[D],天津城建学院硕士学论文,2005.6
[16]王生俊,《滨海地区高速公路盐渍土路基修筑技术研究》[D],兰州大学博士学位论文,2005.5
[17]李芳,高江平,《硫酸盐渍土盐胀与低层建筑》[J],西安公路交通大学学报,1998(2):25-27
[18]刘敏,《强夯处理盐渍化软基的试验研究》[D],长安大学硕士论文,2006.6
[19]邢文榜,《盐渍土地区公路路基的处理与施工》[J],交通世界,2004年,01期
[20]罗伟甫,《盐渍土地区公路工程》[M],人民交通出版社,1980
[21]刘永球,《盐渍土地基及处理方法研究》[D],中南大学硕士论文,2002.4
[22]房建宏,《盐渍土地区公路工程地质勘查》[J],青海交通科技,2004年,02期
[23]杨书遂,《渤海湾西岸滨海平原的形成》[J],天津地质学会志,9(1)
[24]张登良,《加固土原理》[M],北京人民交通出版社,1990
[25]石兆旭,李斌,《硫酸盐渍土膨胀规律及影响因素的试验分析》[J],西安公路交通大学学报,1994(2):16-19
[26]谌文武,董兰凤《公路盐渍土路基处理与病害防治》[J]天津城市建设学院学报,1999年,01期
[27]任荣,《试论沧州地区盐渍土的形成与发展》[J],勘察科学技术,1992,5
[28]柴寿喜,《固化滨海盐渍土的强度特性研究》[D],兰州大学博士学位论文,2006.11
[29]新疆公路学会,《盐渍土地区公路设计与施工指南》[M],人民交通出版社,2006
[30]宋子玺,柴寿喜,《天津经济开发区地质环境条件的初步分析》[J],水利水电工程,1994,2
[31]《公路土工试验规程》(JTG E40-2007)[S],中华人民共和国行业标准,人民交通出版社
[32]《公路路面基层施工技术规范》(JTJ 034-2000)[S],人民交通出版社
[37]申爱琴等,《加固的含砂低液限粉土收缩性能研究》[J],建筑材料学报,2000年04期
[38]李炜光等,《二灰碎石抗裂性能研究》[J],重庆交通学院学报,2005年01期
[39]沙庆林,《高等级公路半刚性基层沥青路面》[M],北京人民交通出版社,1999
[40]张登良、郑南翔,《半刚性材料抗裂性能研究之二》[M],西安公路学院科学技术 报告,1988.6
[41]张超,《石灰粉煤灰类材料施工特性研究》[D],长安大学硕士论文,2003.3
[42]李雪,《高等级公路稳定细粒土基层性能研究》[D],大连理工大学硕士论文,2000
[43]沙爱民,《半刚性路面材料结构与性能》[M],人民交通出版社,1998.4
[44]沙庆林,《公路压实与压实标准》[S],人民交通出版社,1998.5
[45]徐攸在,《盐渍土地基》[M],北京:中国建筑工业出版社,1993
[46]徐学祖,《土冻胀和盐胀》[M],北京:科学出版社,1995
[47]侯钊主编,《天津软土地基》[M],天津:天津科学技术出版社,1987.33
[48]Ekambaranellore Prakash,Patan Shaik Sha Valli Khan,Thoguni Jonh Vivek Sreenivasa Rao,Elu Singh Meru.Micropropagation of red sanders(Pterocarpus santalinus L.) using mature nodal explants[J].Journal of Forest Research,2006,11(5):329-335
[49]K.J.Greer.A rapid method for assessing sodicity havard using a canon exchange membrane[J].Soil Technology 1996 8:24-28
[50]Zia,N;Fox,P.J.Engineering properties of loess-fly ash mixtures for roadbase construction[J].Transportation Research Record,2000,17(14):49-56
[2]周琦,韩文峰,邓安等,《滨海盐渍土作公路路基填料试验研究》[J],岩土工程学报,2006,28(9),1177-1180
[3]铁道部第一勘察设计院,《盐渍土地区铁路工程》[M],中国铁道出版社,1988
[4]刘付华,郭英,曹权等《滨海盐渍土改良与利用新途径试验研究》[J],天津城市建设学院学报,2005,11(4):254-257
[5]耿恩朋,《无机结合料加固细氯盐渍土路用性能及其机理研究》[D],长安大学硕士论文,2006.6
[6]王思敬,黄鼎成,《中国工程地质世纪成就》[M],北京:地质出版社,2004,1-21
[7]Raphael Grosl,Franck Poly,Lucile Jocteur Monrozier and Pierre Faivre.Plant and soil microbial community responses to solid waste leachates diffusion on grassland [J].Journal of Plant and Soil,2003,255(2):445-455
[8]Ali A.Abdulla and Panos D.Kiousis.Behavior of cemented sand testing[J].InternationalJournal for Numerical Methods in Geomechanics,1997,21:533-547
[9]Raphael Gros,Jerome Poulenard,Lucile Jocteur Monrozier and Pierre Faivre.Soil physical-chemical changes following application of municipal solid waste leachates to grasslands[J].Journal of Water,Air&Soil Pollution,2006,169(1):81-100
[10]N.Roth-Bejerano,S.Mendlinger and V.Kagan-Zur.Effect of calcium on growth of submerged Terfezia boudieri mycelium[J].Journal of Mycoscience,2004,45(1):30-34
[11]Klich,L.Wilding,L.Drees.Trace metal and mineral speciation of remediated wastes using electron microscopy[J].Journal of Analytical and Bioanalytical Chemistry,2003,376(3):436-443
[12]陈肖柏,刘建坤,刘鸿绪等,《土的冻结作用与地基》[M],北京:科学出版社,2006,170-205.
[13]虞海珍,李小青,姚建伟《膨胀土化学改良试验研究分析》[J],岩土力学,2006,27(11),1941-1944
[14]黄晓波,周立新,何淑军等《浸水预溶法处理盐渍土地基试验研究》[J],岩土力学,2006,27(11),2080-2084
[15]周琦,《滨海盐渍土作公路路堤填料试验研究》[D],天津城建学院硕士学论文,2005.6
[16]王生俊,《滨海地区高速公路盐渍土路基修筑技术研究》[D],兰州大学博士学位论文,2005.5
[17]李芳,高江平,《硫酸盐渍土盐胀与低层建筑》[J],西安公路交通大学学报,1998(2):25-27
[18]刘敏,《强夯处理盐渍化软基的试验研究》[D],长安大学硕士论文,2006.6
[19]邢文榜,《盐渍土地区公路路基的处理与施工》[J],交通世界,2004年,01期
[20]罗伟甫,《盐渍土地区公路工程》[M],人民交通出版社,1980
[21]刘永球,《盐渍土地基及处理方法研究》[D],中南大学硕士论文,2002.4
[22]房建宏,《盐渍土地区公路工程地质勘查》[J],青海交通科技,2004年,02期
[23]杨书遂,《渤海湾西岸滨海平原的形成》[J],天津地质学会志,9(1)
[24]张登良,《加固土原理》[M],北京人民交通出版社,1990
[25]石兆旭,李斌,《硫酸盐渍土膨胀规律及影响因素的试验分析》[J],西安公路交通大学学报,1994(2):16-19
[26]谌文武,董兰凤《公路盐渍土路基处理与病害防治》[J]天津城市建设学院学报,1999年,01期
[27]任荣,《试论沧州地区盐渍土的形成与发展》[J],勘察科学技术,1992,5
[28]柴寿喜,《固化滨海盐渍土的强度特性研究》[D],兰州大学博士学位论文,2006.11
[29]新疆公路学会,《盐渍土地区公路设计与施工指南》[M],人民交通出版社,2006
[30]宋子玺,柴寿喜,《天津经济开发区地质环境条件的初步分析》[J],水利水电工程,1994,2
[31]《公路土工试验规程》(JTG E40-2007)[S],中华人民共和国行业标准,人民交通出版社
[32]《公路路面基层施工技术规范》(JTJ 034-2000)[S],人民交通出版社
[37]申爱琴等,《加固的含砂低液限粉土收缩性能研究》[J],建筑材料学报,2000年04期
[38]李炜光等,《二灰碎石抗裂性能研究》[J],重庆交通学院学报,2005年01期
[39]沙庆林,《高等级公路半刚性基层沥青路面》[M],北京人民交通出版社,1999
[40]张登良、郑南翔,《半刚性材料抗裂性能研究之二》[M],西安公路学院科学技术 报告,1988.6
[41]张超,《石灰粉煤灰类材料施工特性研究》[D],长安大学硕士论文,2003.3
[42]李雪,《高等级公路稳定细粒土基层性能研究》[D],大连理工大学硕士论文,2000
[43]沙爱民,《半刚性路面材料结构与性能》[M],人民交通出版社,1998.4
[44]沙庆林,《公路压实与压实标准》[S],人民交通出版社,1998.5
[45]徐攸在,《盐渍土地基》[M],北京:中国建筑工业出版社,1993
[46]徐学祖,《土冻胀和盐胀》[M],北京:科学出版社,1995
[47]侯钊主编,《天津软土地基》[M],天津:天津科学技术出版社,1987.33
[48]Ekambaranellore Prakash,Patan Shaik Sha Valli Khan,Thoguni Jonh Vivek Sreenivasa Rao,Elu Singh Meru.Micropropagation of red sanders(Pterocarpus santalinus L.) using mature nodal explants[J].Journal of Forest Research,2006,11(5):329-335
[49]K.J.Greer.A rapid method for assessing sodicity havard using a canon exchange membrane[J].Soil Technology 1996 8:24-28
[50]Zia,N;Fox,P.J.Engineering properties of loess-fly ash mixtures for roadbase construction[J].Transportation Research Record,2000,17(14):49-56
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