碎石排水桩抗地震液化的试验研究与理论分析
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摘要
振冲碎石桩处理砂土液化地基,通过挤密土体以及依靠桩体的排水减压和桩体减震共同作用来减轻或消除砂土液化的影响,取得较好的效果。该文利用小型振动台模型试验,重点研究碎石桩加固后的排水减压作用和理论分析。试验表明采用碎石桩加固可液化砂土,由于其良好的透水性抗液化效果明显优于其它方案。
Using the way of vibro-replacement gravel piles,it gains a better effect in dealing with a sand liquefaction foundation.The liquefaction is reduced or eliminated depending on the extrusion soil body,draining decompression and absorption seism of the pile body together.Through the test of a small-scale shaking table model,this paper focuses on the theoretical analysis and the action of the draining decompression of reinforced gravel piles.The experiments show that gravel piles can be used in a reinforcing liquefaction foundation.By well anti-permeability effect,the gravel pile is obviously better than other ways.
Using the way of vibro-replacement gravel piles,it gains a better effect in dealing with a sand liquefaction foundation.The liquefaction is reduced or eliminated depending on the extrusion soil body,draining decompression and absorption seism of the pile body together.Through the test of a small-scale shaking table model,this paper focuses on the theoretical analysis and the action of the draining decompression of reinforced gravel piles.The experiments show that gravel piles can be used in a reinforcing liquefaction foundation.By well anti-permeability effect,the gravel pile is obviously better than other ways.
引文
[1]U.S National Research Council.Liquefaction of soils during earthquakes[M].Washington:National Academy Press,1985.
[2]刘金韬,金晓媚.饱和砂土液化判别方法中问题浅析[J].工程地质学报,2000,8(3):379―384.Liu Jintao,Jin Xiaomei.Brief analysis on saturated sandy soil liquefaction distinction method question[J].Journal of Engineering Geologyl,2000,8(3):379―384.(in Chinese)
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[4]许明军,方磊.碎石桩处理液化地基抗液化研究现状及存在问题[J].防灾减灾工程学报,2003,23(3):99―104.Xu Mingjun,Fang Lei.Situation and problem on broken stone marker processing liquefies the ground anti-Liquefaction research[J].Journal of Disaster Prevention and Mitigation Engineering,2003,23(3):99―104.(in Chinese)
[5]Huang Wenxi.Investigation on stability of saturated soil foundation and slope against liquefaction[C]//Proceedings of 5th International Conference of Soil Mechanics and Foundation Engineering,Paris,France,1961,II:626―630.
[6]黄春霞,张鸿儒.碎石桩复合地基的抗液化特性探讨[J].工程地质学报,2004,12(2):148―154.Huang Chunxia,Zhang Hongru.Discussion on broken stone marker compound ground anti-liquefied[J].Journal of Engineering Geologyl,2004,12(2):148―154.(in Chinese)
[7]杨庆陶.桩体加固液化砂土的振动台试验研究[D].太原:太原理工大学,2008.Yang Qingtao.Experimental on pile body reinforcement liquefaction sandy soil shake table[D].Taiyuan:Taiyuan University of Technology,2008.(in Chinese)
[8]柳堀义彦,落合真,半尺秀郎.濑城水门置换砂の液化预测と对策[J].土と基础,1975,6(23):l1―16.Willow Moat,Ochiai Truth,Semi-Shaku.Liquefaction and step of castle water position sand[J].Earth and Basis,1975,6(23):l1―16.(in Japanese)
[9]Seed H B,Booker J R.Stabilization of potentially liquefiable sand deposits using gravel drains systems[C].California:Earthquake Engineering Research Center,University of California,Berkeley,1976:76―10.
[10]王士风,王余庆.用砾石排水桩防止砂基液化的效果[J].工业建筑,1983,12(3):11―14.Wang Shifeng,Wang Yuqing.Effect of broken stone drain-ing water pile to prevent the granulated substance base liquefies[J].Industrial Construction,1983,12(3):11―14.(in Chinese)
[11]徐志英.用砾石排水桩抗地震液化的砂基孔压计算[J].地震工程与工程振动,1992,12(4):88―92.Xu Zhiying.Calculat of pore pressure on with gravel drainage piles of sand-based earthquake liquefaction[J].Earthquake Engineering and Engineering Vibration,1992,12(4):88―92.(in Chinese)
[12]郑建国.碎石桩复合地基液化判别方法的探讨[J].工程勘探,1999,26(2):5―7.Zhen Jianguo.Discussion of gravel pile liquefaction distinction method[J].Engineering Exploration,1999,26(2):5―7.(in Chinese)
[13]林本海,谢定义.振冲地基抗液化机理和检验方法的分析[J].建筑结构,1998,27(11):30―34.Lin Benhai,Xie Dingyi.Analysis of vibro-ground resistance mechanisms and inspection methods[J].Architectural Structure,1998,27(11):30―34.(in Chinese)
[14]杨庆陶,魏建伟,牛琪瑛.碎石桩地基的抗液化研究[C].第十六届全国结构工程学术会议,2007:368―372.Yang Qingtao,Wei Jianwei,Niu Qiying.Research on anti-liquefied of broken stone marker ground[C].The 16th National Conference on Structural Engineering,2007:368―372.(in Chinese)
[15]吴永娟,牛琪瑛,闫卫泽.短桩加固液化砂土时孔压比随桩距变化规律分析[J].太原理工大学学报,2008,39(6):613―615.Wu Yongjuan,Niu Qiying,Yan Weize.Analysis with the pile is apart from the change rule of stub reinforcement liquefaction sandy soil the hole pressure compares along[J].Journal of Taiyuan University of Technology,2008,39(6):613―615.(in Chinese)
[16]薛敬岩.碎石桩处理液化砂土地基试验研究[J].岩土工程,2007,27(2):110―111.Xue Jingyan.Experimental study of broken stone marker processing liquefaction sandy soil ground[J].Geotechnical Engineering,2007,27(2):110―111.(in Chinese)
[2]刘金韬,金晓媚.饱和砂土液化判别方法中问题浅析[J].工程地质学报,2000,8(3):379―384.Liu Jintao,Jin Xiaomei.Brief analysis on saturated sandy soil liquefaction distinction method question[J].Journal of Engineering Geologyl,2000,8(3):379―384.(in Chinese)
[3]林本海,谢定义.复合地基的液化检验理论及其应用[M].北京:中国水利水电出版社,1999.Lin Benhai,Xie Dingyi.Compound ground liquefied examination theory and application[M].Beijing:China Waterpower Press,1999.(in Chinese)
[4]许明军,方磊.碎石桩处理液化地基抗液化研究现状及存在问题[J].防灾减灾工程学报,2003,23(3):99―104.Xu Mingjun,Fang Lei.Situation and problem on broken stone marker processing liquefies the ground anti-Liquefaction research[J].Journal of Disaster Prevention and Mitigation Engineering,2003,23(3):99―104.(in Chinese)
[5]Huang Wenxi.Investigation on stability of saturated soil foundation and slope against liquefaction[C]//Proceedings of 5th International Conference of Soil Mechanics and Foundation Engineering,Paris,France,1961,II:626―630.
[6]黄春霞,张鸿儒.碎石桩复合地基的抗液化特性探讨[J].工程地质学报,2004,12(2):148―154.Huang Chunxia,Zhang Hongru.Discussion on broken stone marker compound ground anti-liquefied[J].Journal of Engineering Geologyl,2004,12(2):148―154.(in Chinese)
[7]杨庆陶.桩体加固液化砂土的振动台试验研究[D].太原:太原理工大学,2008.Yang Qingtao.Experimental on pile body reinforcement liquefaction sandy soil shake table[D].Taiyuan:Taiyuan University of Technology,2008.(in Chinese)
[8]柳堀义彦,落合真,半尺秀郎.濑城水门置换砂の液化预测と对策[J].土と基础,1975,6(23):l1―16.Willow Moat,Ochiai Truth,Semi-Shaku.Liquefaction and step of castle water position sand[J].Earth and Basis,1975,6(23):l1―16.(in Japanese)
[9]Seed H B,Booker J R.Stabilization of potentially liquefiable sand deposits using gravel drains systems[C].California:Earthquake Engineering Research Center,University of California,Berkeley,1976:76―10.
[10]王士风,王余庆.用砾石排水桩防止砂基液化的效果[J].工业建筑,1983,12(3):11―14.Wang Shifeng,Wang Yuqing.Effect of broken stone drain-ing water pile to prevent the granulated substance base liquefies[J].Industrial Construction,1983,12(3):11―14.(in Chinese)
[11]徐志英.用砾石排水桩抗地震液化的砂基孔压计算[J].地震工程与工程振动,1992,12(4):88―92.Xu Zhiying.Calculat of pore pressure on with gravel drainage piles of sand-based earthquake liquefaction[J].Earthquake Engineering and Engineering Vibration,1992,12(4):88―92.(in Chinese)
[12]郑建国.碎石桩复合地基液化判别方法的探讨[J].工程勘探,1999,26(2):5―7.Zhen Jianguo.Discussion of gravel pile liquefaction distinction method[J].Engineering Exploration,1999,26(2):5―7.(in Chinese)
[13]林本海,谢定义.振冲地基抗液化机理和检验方法的分析[J].建筑结构,1998,27(11):30―34.Lin Benhai,Xie Dingyi.Analysis of vibro-ground resistance mechanisms and inspection methods[J].Architectural Structure,1998,27(11):30―34.(in Chinese)
[14]杨庆陶,魏建伟,牛琪瑛.碎石桩地基的抗液化研究[C].第十六届全国结构工程学术会议,2007:368―372.Yang Qingtao,Wei Jianwei,Niu Qiying.Research on anti-liquefied of broken stone marker ground[C].The 16th National Conference on Structural Engineering,2007:368―372.(in Chinese)
[15]吴永娟,牛琪瑛,闫卫泽.短桩加固液化砂土时孔压比随桩距变化规律分析[J].太原理工大学学报,2008,39(6):613―615.Wu Yongjuan,Niu Qiying,Yan Weize.Analysis with the pile is apart from the change rule of stub reinforcement liquefaction sandy soil the hole pressure compares along[J].Journal of Taiyuan University of Technology,2008,39(6):613―615.(in Chinese)
[16]薛敬岩.碎石桩处理液化砂土地基试验研究[J].岩土工程,2007,27(2):110―111.Xue Jingyan.Experimental study of broken stone marker processing liquefaction sandy soil ground[J].Geotechnical Engineering,2007,27(2):110―111.(in Chinese)
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