低承载力地基条件下轻型挡土墙结构体系的应用研究
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摘要
长期以来,我国路基工程广泛采用了石砌和衡重式等重力式挡土墙,随着经济的发展和节能、环保方面的要求,轻型化、机械化、能够预制拼装、节能环保的挡土墙应该是支挡结构发展的方向之一,而轻型支挡结构具有轻型、对地基承载力要求较低、充分利用填料的自重或地层本身的稳定性和较为经济等主要特点,必然会得到更广泛的发展。为了进一步扩大轻型支挡结构的应用范围,本文将主要探讨低承载力地基条件下轻型挡土墙的受力特性,同时也为今后的实际工程提供一定的参考。
本文所做的主要工作如下:
①归纳总结了轻型挡土墙的土压力计算模型和力学分析模型,通过解析计算的方法对轻型挡土墙的受力特性进行了对比分析。
②通过采用ANSYS软件进行了有限元分析,分析了轻型挡土墙的位移、土压力和基底应力分布特点,并与解析计算结果进行了对比分析,探讨了轻型挡土墙独有的优越性。
③在不同的工程条件下提出了不同的轻型支挡结构设计方案,并为今后类似工程的修建提出了一些有益的施工建议。
本文通过解析计算与数值计算结合的方法,采用对比的形式得出轻型挡土墙在土压力、地基应力和稳定性等方面均较重力式挡土墙有优势,同时更突出了低承载力地基条件下轻型支挡结构的优越性。
For a long time, gravity retaining walls and scale retaining walls are used widely in subgrade engineering in our country. With the development of economic and the requirement of saving energy and protecting environmental, walls which have the features of lightening, mechanization, being prefabricated and being assembled, saving energy and protecting environmental will be a direction of retaining structures' development. Light-retaining walls will be developed widely for their main features of lightening, a lower requirement on the bearing capacity of foundation, making use of fillers fully or formation' stability and being more economical, etc. To expand the applied scopes of the light-retaining structures and provide a reference for practical engineering, this paper will mainly explore the force characteristics of light-retaining walls under the low bearing capacity of foundation.
The major works were done in this paper:
①The models of calculation and mechanical analysis about light-retaining walls were summarized, and the force characteristics of light-retaining walls were made a comparative analysis by the methord of analytic calculation.
②The displacements, the earth pressures and the basal stresses' distributions of light-retaining walls were analyzed by ANSYS software, and a comparision with analytic calculation was made to explore the advantages of them.
③Different designs of light-retaining walls were presented under the different engineering conditions. And some beneficial construction proposals were put forward for the future similar project construction.
Comparing with gravity retaining wall, the advantages of light-retaining walls on the aspects of earth pressure, foundation stress and stability could been obtained by the united methord of analytic calculation and FEM. Furtherly, the superiority about light -retaining walls under the conditions of low bearing foundation capacity was highlighted.
本文所做的主要工作如下:
①归纳总结了轻型挡土墙的土压力计算模型和力学分析模型,通过解析计算的方法对轻型挡土墙的受力特性进行了对比分析。
②通过采用ANSYS软件进行了有限元分析,分析了轻型挡土墙的位移、土压力和基底应力分布特点,并与解析计算结果进行了对比分析,探讨了轻型挡土墙独有的优越性。
③在不同的工程条件下提出了不同的轻型支挡结构设计方案,并为今后类似工程的修建提出了一些有益的施工建议。
本文通过解析计算与数值计算结合的方法,采用对比的形式得出轻型挡土墙在土压力、地基应力和稳定性等方面均较重力式挡土墙有优势,同时更突出了低承载力地基条件下轻型支挡结构的优越性。
For a long time, gravity retaining walls and scale retaining walls are used widely in subgrade engineering in our country. With the development of economic and the requirement of saving energy and protecting environmental, walls which have the features of lightening, mechanization, being prefabricated and being assembled, saving energy and protecting environmental will be a direction of retaining structures' development. Light-retaining walls will be developed widely for their main features of lightening, a lower requirement on the bearing capacity of foundation, making use of fillers fully or formation' stability and being more economical, etc. To expand the applied scopes of the light-retaining structures and provide a reference for practical engineering, this paper will mainly explore the force characteristics of light-retaining walls under the low bearing capacity of foundation.
The major works were done in this paper:
①The models of calculation and mechanical analysis about light-retaining walls were summarized, and the force characteristics of light-retaining walls were made a comparative analysis by the methord of analytic calculation.
②The displacements, the earth pressures and the basal stresses' distributions of light-retaining walls were analyzed by ANSYS software, and a comparision with analytic calculation was made to explore the advantages of them.
③Different designs of light-retaining walls were presented under the different engineering conditions. And some beneficial construction proposals were put forward for the future similar project construction.
Comparing with gravity retaining wall, the advantages of light-retaining walls on the aspects of earth pressure, foundation stress and stability could been obtained by the united methord of analytic calculation and FEM. Furtherly, the superiority about light -retaining walls under the conditions of low bearing foundation capacity was highlighted.
引文
[1]陈仲颐,叶书麟.基础工程学.北京:中国建筑工业出版社.1990
[2]许平.轻型挡土墙在公路建设中的发展前景.公路工程与运输.
[3]李海光等.新型支挡结构设计与工程实例[M] .北京:人民交通出版社.2004
[4]铁道部第一勘测设计院.铁路工程设计技术手册(路基)[M] .北京:中国铁道出版社.1992
[5] Roscoe,K.H.“Anchored Bullkhead Design by Numerical Method.”Geotechnique,vol.20,No. 2,1970,pp. 129～170
[6] Clough,G.W.andWoodward,R.J.III.Analysis of embankment stress and deformations.Joumal of Soil Mechanics&Foundation Div.ASCE,1967,Vol93,NO.SM4:529～524
[7] V.S.Chandrasekaran and G.J.W.king.“Simulation of excavation using finite elements.”J.Geothch.Eng.Div.ASCE,Vol.100,1974:1086～1089
[8] Desai,C.S.“A fundamental study of braced excavationg construction.”Comput. Geotech.8,1977:39～64
[9]津田光男.倒Y型挡土墙的设计和施工.北方交通大学.1990
[10]刘晓立.柔性挡墙在砂性填土中的土压力研究试验.岩土工程学报.1999
[11]王志谦.悬锚式挡土墙结构研究.西安公路交通大学.2000
[12]黄锦文,龚晓利.钢筋混凝土锚定板挡土墙在路堤工程中的应用.中南公路工程.2001
[13]王家东,梁波,岩松宏.多年冻土区L型支挡结构的数值分析.岩土力学与工程学报.2003
[14]梁学文,刘倩.悬臂式挡土墙的有限元分析.华中科技大学学报(城市科学版).2003
[15]张建军,才西月等.槽式挡土墙在城市地道桥引道上的应用.辽宁省交通高等专科学校学报.2003
[16]梁波,王家东,葛建军,曹袁平.青藏铁路L型挡土墙的土压力实测与分析.岩土工程学报.2004
[17]陈忠达,汪东升,王志谦,高江平.悬锚式挡土墙有限元分析.公路交通科技.2005
[18]赵运革.悬锚式挡土墙土压力计算方法探讨.山西水利.2005
[19]曹霞,王晓蕾,陈飞.锚杆挡土墙在边坡防护工程中的应用.岩土工程.2005
[20]应志民.锚杆挡土墙力学作用的研究.浙江大学.2006
[21]刘扬开.锚杆挡土墙的实际设计方法及工程实践.混凝土.2006
[22]贺会团.加筋挡土墙关键技术研究.南京水利科学研究院.2007
[23]李锁平.槽式挡墙在京九线下穿立交引道工程中的应用设计.路基工程.2004
[24]朱彦鹏,王光彬,董建华.锚定板挡墙的有限元分析.兰州理工大学学报.2007
[25]丁兆锋,吴沛沛.U型槽结构设计与分析.铁道工程学报.2009
[26]杨治国,侯恩科.低承载力地基重力式挡土墙墙踵台阶作用初探.路基工程.2009
[27]林鹏,郑明新,熊孝波,王艳红等.基于模型实验的板桩墙支护变形机理分析.华东交通大学学报.2008
[28]陈仲颐,周景星,王洪瑾.土力学[M] .北京:清华大学出版社.2003
[29]顾慰慈.挡土墙土压力计算手册[M] .北京:中国建材工业出版社.2005
[30]陈忠达.公路挡土墙设计[M] .北京:人民交通出版社.1999
[31]丁兆锋,吴沛沛.U型槽结构设计与分析.铁道工程学报.2009
[32]袁林新,阳文辉.锚杆挡土墙设计.山西建筑.2009
[33]曹霞,王晓蕾,陈飞.浅析锚杆挡土墙的受力及计算方法.城市道桥与防洪.2005
[34]陈忠达,汪东升,王志谦,高江平.悬锚式挡土墙结构设计与分析.2005
[35]丘亦工.挡土墙的选型与设计.工程建设与档案.2003
[36]刘慧军.挡土墙的调查及设计数据的准备.黑龙江交通科技.2007
[37]刘涛,杨凤鹏.精通ANSYS.北京:清华大学出版社.2002
[38]叶先磊,史亚杰.ANSYS工程分析软件应用实例.北京:清华大学出版社.2003
[39] Paolo Carrubba,Pietro Colonna. A comparison of numerical methods for multi-tied walls[J] .Computers and Geotechnics.2000(27):117-140
[40]郑颖人,张玉芳,赵尚毅等.有限元强度折减法在元磨高速公路高边坡工程中的应用.岩石力学与工程学报.2005.24 (11):3812-3817
[41]许建聪,尚岳全,陈侃福等.顺层滑坡弹塑性接触有限元稳定性分析.岩石力学与工程学报.2005.24(13 ):2231-2236
[42]何川,李永林,林刚等.连拱隧道施工引起的位移分析.岩土力学.2005.26 (4 ):612-616
[43]申玉生,赵玉光,张焕新.双连拱隧道施工过程弹塑性有限元数值分析.2004.23 (S2):4946-4951
[44]孙炳楠,洪滔,杨骊先等.工程弹塑性力学.杭州:浙江大学出版社.1999
[45]王家东.L型支挡结构及其在多年冻土地区的应用研究.兰州:兰州铁道学院.2003
[46]王景环.二级新型悬臂式挡土墙有限元分析.中国科技论文在线.
[47]苏志雄.重视路基挖方边坡的设计.华东公路.2001
[48]龚晓南.地基处理新技术.西安:陕西科学技术出版社.1997
[49]李建平.软土地基挡土墙施工方法.沿海企业与科技.2003
[50]陈忠达,王海林.公路挡土墙施工[M] .北京:人民交通出版社.2004
[51]董海文,付贵海.挡土墙排水技术研究.公路.2007
[52]梁桥.二级悬臂(扶壁)式支挡结构分析探讨.兰州交通大学.2007
[53]安琳媛.挡土墙设计之景观效应.技术与经济.2000
[2]许平.轻型挡土墙在公路建设中的发展前景.公路工程与运输.
[3]李海光等.新型支挡结构设计与工程实例[M] .北京:人民交通出版社.2004
[4]铁道部第一勘测设计院.铁路工程设计技术手册(路基)[M] .北京:中国铁道出版社.1992
[5] Roscoe,K.H.“Anchored Bullkhead Design by Numerical Method.”Geotechnique,vol.20,No. 2,1970,pp. 129～170
[6] Clough,G.W.andWoodward,R.J.III.Analysis of embankment stress and deformations.Joumal of Soil Mechanics&Foundation Div.ASCE,1967,Vol93,NO.SM4:529～524
[7] V.S.Chandrasekaran and G.J.W.king.“Simulation of excavation using finite elements.”J.Geothch.Eng.Div.ASCE,Vol.100,1974:1086～1089
[8] Desai,C.S.“A fundamental study of braced excavationg construction.”Comput. Geotech.8,1977:39～64
[9]津田光男.倒Y型挡土墙的设计和施工.北方交通大学.1990
[10]刘晓立.柔性挡墙在砂性填土中的土压力研究试验.岩土工程学报.1999
[11]王志谦.悬锚式挡土墙结构研究.西安公路交通大学.2000
[12]黄锦文,龚晓利.钢筋混凝土锚定板挡土墙在路堤工程中的应用.中南公路工程.2001
[13]王家东,梁波,岩松宏.多年冻土区L型支挡结构的数值分析.岩土力学与工程学报.2003
[14]梁学文,刘倩.悬臂式挡土墙的有限元分析.华中科技大学学报(城市科学版).2003
[15]张建军,才西月等.槽式挡土墙在城市地道桥引道上的应用.辽宁省交通高等专科学校学报.2003
[16]梁波,王家东,葛建军,曹袁平.青藏铁路L型挡土墙的土压力实测与分析.岩土工程学报.2004
[17]陈忠达,汪东升,王志谦,高江平.悬锚式挡土墙有限元分析.公路交通科技.2005
[18]赵运革.悬锚式挡土墙土压力计算方法探讨.山西水利.2005
[19]曹霞,王晓蕾,陈飞.锚杆挡土墙在边坡防护工程中的应用.岩土工程.2005
[20]应志民.锚杆挡土墙力学作用的研究.浙江大学.2006
[21]刘扬开.锚杆挡土墙的实际设计方法及工程实践.混凝土.2006
[22]贺会团.加筋挡土墙关键技术研究.南京水利科学研究院.2007
[23]李锁平.槽式挡墙在京九线下穿立交引道工程中的应用设计.路基工程.2004
[24]朱彦鹏,王光彬,董建华.锚定板挡墙的有限元分析.兰州理工大学学报.2007
[25]丁兆锋,吴沛沛.U型槽结构设计与分析.铁道工程学报.2009
[26]杨治国,侯恩科.低承载力地基重力式挡土墙墙踵台阶作用初探.路基工程.2009
[27]林鹏,郑明新,熊孝波,王艳红等.基于模型实验的板桩墙支护变形机理分析.华东交通大学学报.2008
[28]陈仲颐,周景星,王洪瑾.土力学[M] .北京:清华大学出版社.2003
[29]顾慰慈.挡土墙土压力计算手册[M] .北京:中国建材工业出版社.2005
[30]陈忠达.公路挡土墙设计[M] .北京:人民交通出版社.1999
[31]丁兆锋,吴沛沛.U型槽结构设计与分析.铁道工程学报.2009
[32]袁林新,阳文辉.锚杆挡土墙设计.山西建筑.2009
[33]曹霞,王晓蕾,陈飞.浅析锚杆挡土墙的受力及计算方法.城市道桥与防洪.2005
[34]陈忠达,汪东升,王志谦,高江平.悬锚式挡土墙结构设计与分析.2005
[35]丘亦工.挡土墙的选型与设计.工程建设与档案.2003
[36]刘慧军.挡土墙的调查及设计数据的准备.黑龙江交通科技.2007
[37]刘涛,杨凤鹏.精通ANSYS.北京:清华大学出版社.2002
[38]叶先磊,史亚杰.ANSYS工程分析软件应用实例.北京:清华大学出版社.2003
[39] Paolo Carrubba,Pietro Colonna. A comparison of numerical methods for multi-tied walls[J] .Computers and Geotechnics.2000(27):117-140
[40]郑颖人,张玉芳,赵尚毅等.有限元强度折减法在元磨高速公路高边坡工程中的应用.岩石力学与工程学报.2005.24 (11):3812-3817
[41]许建聪,尚岳全,陈侃福等.顺层滑坡弹塑性接触有限元稳定性分析.岩石力学与工程学报.2005.24(13 ):2231-2236
[42]何川,李永林,林刚等.连拱隧道施工引起的位移分析.岩土力学.2005.26 (4 ):612-616
[43]申玉生,赵玉光,张焕新.双连拱隧道施工过程弹塑性有限元数值分析.2004.23 (S2):4946-4951
[44]孙炳楠,洪滔,杨骊先等.工程弹塑性力学.杭州:浙江大学出版社.1999
[45]王家东.L型支挡结构及其在多年冻土地区的应用研究.兰州:兰州铁道学院.2003
[46]王景环.二级新型悬臂式挡土墙有限元分析.中国科技论文在线.
[47]苏志雄.重视路基挖方边坡的设计.华东公路.2001
[48]龚晓南.地基处理新技术.西安:陕西科学技术出版社.1997
[49]李建平.软土地基挡土墙施工方法.沿海企业与科技.2003
[50]陈忠达,王海林.公路挡土墙施工[M] .北京:人民交通出版社.2004
[51]董海文,付贵海.挡土墙排水技术研究.公路.2007
[52]梁桥.二级悬臂(扶壁)式支挡结构分析探讨.兰州交通大学.2007
[53]安琳媛.挡土墙设计之景观效应.技术与经济.2000