1.重庆大学山地城镇建设与新技术教育部重点实验室,重庆 400045
2.重庆大学库区环境地质灾害防治国家地方联合工程研究中心,重庆 400045
3.重庆大学土木工程学院,重庆 400045
4.河海大学岩土力学与堤坝工程教育部重点实验室,江苏 南京 210098
5.河海大学土木与交通学院,江苏 南京 210098
陈志雄(1980— ),男,副教授,博导。主要从事土动力学与工程减灾研究。E-mail:chenzhixiong@cqu.edu.cn
潘小东(1991— ),女,硕士研究生。主要从事岩土工程方面研究。E-mail:20161602026@cqu.edu.cn
收稿:2018-11-18,
修回:2018-12-11,
纸质出版:2021-02-15
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陈志雄,潘小东,陈育民等.排水刚性桩处置可液化倾斜场地的振动台试验研究[J].防灾减灾工程学报,2021,41(01):12-20.
CHEN Zhixiong,PAN Xiaodong,CHEN Yumin,et al.Research on Efficacy of Rigid⁃drainage Pile Improvement on Liquefiable Sloping Ground by Shaking Table Tests[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):12-20.
陈志雄,潘小东,陈育民等.排水刚性桩处置可液化倾斜场地的振动台试验研究[J].防灾减灾工程学报,2021,41(01):12-20. DOI: 10.13409/j.cnki.jdpme.2021.01.002.
CHEN Zhixiong,PAN Xiaodong,CHEN Yumin,et al.Research on Efficacy of Rigid⁃drainage Pile Improvement on Liquefiable Sloping Ground by Shaking Table Tests[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):12-20. DOI: 10.13409/j.cnki.jdpme.2021.01.002.
排水刚性桩将竖向排水体和刚性桩相结合,是一种有效的地基抗液化处理措施。但目前对排水刚性桩在可液化倾斜场地中抗液化侧向变形的性能研究还比较缺乏,制约了其推广与应用。通过振动台试验,开展了可液化倾斜场地中排水刚性桩和普通刚性桩的对比研究,从土体内部动孔压响应、液化土体的流动性质、桩顶水平位移等角度研究了排水刚性桩对可液化倾斜场地的处理效果,并考虑了群桩布置形式的影响。结果表明,排水刚性桩是一种有效的加固可液化倾斜场地的处理措施,可以较好的限制液化土体侧向变形;相同群桩布置形式下,排水刚性桩限制土体流动变形效果优于普通刚性桩,且这种限制效果在坡顶位置更为明显;对于普通刚性桩,群桩梅花形布置形式相对于正方形布置形式能更好的阻止液化土体的流动变形,而对于排水刚性桩,群桩布置形式影响较小。
Rigid-drainage pile is an effective anti-liquefaction treatment measure for foundations, which combines the bearing capacity of rigid pile and the drain-ability of gravel pile. At present, however, there is still a lack of research on the performance of rigid-drainage pile reducing lateral displacement of liquefied sand, which limits its popularization and application. To investigate the efficacy of rigid-drainage pile improvement on liquefiable sloping ground, the response of excess pore water pressure, flow properties of liquefied sand, and lateral permanent displacement of the pile head were measured based on shaking table tests. The results were compared with those of ordinary pile tests, and the effect of pile arrangement patterns was considered. The results indicate that: the rigid-drainage pile is an effective treatment measure to reinforce liquefiable sloping ground, which can better restrict liquefaction-induced lateral flow. With the same pile arrangement pattern, the rigid-drainage pile has better effect in restraining the flow and deformation of liquefied sand than the ordinary pile, and this effect is more obvious at the slope crest. For ordinary piles, the triangular pile arrangement pattern is more effective in restricting lateral flow than the square pile arrangement pattern, but the difference is not obvious for rigid-drainage piles.
Yamamuro J A , Lade P V . Steady-state concepts andstatic liquefaction of silty sands [J]. Journal of Geotechnical and Geoenvironment Engineering , 1998 , 124 ( 9 ): 868 - 877 .
Hamada M , Towhata I , Yasuda S , et al . Study on permanent ground displacement induced by seismic liquefaction [J]. Computers and Geotechnics , 1987 , 4 ( 4 ): 197 - 220 .
郑刚 , 龚晓楠 , 谢永利 , 等 . 地基处理技术发展综述 [J]. 土木工程学报 , 2012 , 45 ( 2 ): 127 - 146 .
Zheng G , Gong X N , Xie Y L , et al . State-of-the-art techniques for ground improvement in China [J]. China Civil Engineering Journal , 2012 , 45 ( 2 ): 127 - 146 . (in Chinese)
刘汉龙 . 一种抗液化排水刚性桩 : 中国 , ZL 200520076660.4 [P]. 2007-02-28 .
Liu H L . A kind of rigid drainage pile of mitigation of liquefaction : China , ZL200520076660.4 [P]. 2007-02-28 . (in Chinese)
Liu H L , Chen Y M , Zhao N . Development technology of rigidity-drain pile and numerical analysis of its anti-liquefaction characteristics [J]. Journal of Central South University of Technology , 2008 , 15 ( Sup 2 ): 101 - 107 .
Adalier K , Elgamal A . Mitigation of liquefaction and associated ground deformations by stone columns [J]. Engineering Geology , 2004 , 72 ( 3/4 ): 275 - 291 .
Sadrekarimi A , Ghalandarzadeh A . Evaluation of gravel drains and compacted sand piles in mitigating liquefaction [J]. Ground Improvement , 2005 , 9 ( 3 ): 91 - 104 .
Krishna A M , Madhav M R , Latha G M . Liquefaction mitigation of ground treated with granular piles: densification effect [J]. ISE Journal of Earthquake , 2006 , 43 ( 473 ): 105 - 120 .
Tsukamoto Y , Ishihara K , Yamamoto M , et al . Soil densification due to static sand pile installation for liquefaction remediation [J]. Soils and Foundations , 2000 , 40 ( 2 ): 9 - 20 .
陈育民 , 刘汉龙 , 赵楠 . 抗液化刚性排水桩振动台试验的数值模拟研究 [J]. 土木工程学报 , 2010 , 43 ( 12 ): 114 - 119 .
Chen Y M , Liu H L , Zhao N . Laboratory test on anti-liquefaction characteristics of rigidity-drain pile [J]. China Civil Engineering Journal , 2010 , 43 ( 12 ): 114 - 119 . (in Chinese)
王翔鹰 , 刘汉龙 , 江强 , 等 . 抗液化排水刚性桩沉桩过程中的孔压响应 [J]. 岩土工程学报 , 2017 , 39 ( 4 ): 645 - 651 .
Wang X Y , Liu H L , Jiang Q , et al . Field tests on the response of excess pore water pressures of the liquefaction resistance rigid-drainage pile [J]. Chinese Journal of Geotechnical Engineering , 2017 , 39 ( 4 ): 645 - 651 . (in Chinese)
杨耀辉 , 陈育民 , 刘汉龙 , 等 . 排水刚性桩单桩抗液化性能的振动台试验研究 [J]. 岩土工程学报 , 2018 , 40 ( 2 ): 287 - 295 .
Yang Y H , Chen Y M , Liu H L , et al . Shaking table tests on liquefaction resistance performance of single rigid-drainage pile [J]. Chinese Journal of Geotechnical Engineering , 2018 , 40 ( 2 ): 287 - 295 . (in Chinese)
Yasuda S , Nagase H , Kiku H . Appropriate countermeasures against permanent ground displacement due to liquefaction [C]∥ Tenth World Conference on Earthquake Engineering . Madrid : Eos Transactions American Geophysical Union , 1992 : 1471 - 1476 .
Motamed R , Towhata I . Mitigation measures for pile groups behind quay walls subjected to lateral flow of liquefied soil: Shake table model tests [J]. Soil Dynamics and Earthquake Engineering , Elsevier , 2010 , 30 ( 10 ): 1043 - 1060 .
Li W W , Chen Y M , Armin W . Stuedlein, et al . Performance of X-shaped and circular pile-improved ground subject to liquefaction-induced lateral spreading [J]. Soil Dynamics and Earthquake Engineering , 2018 , 109 : 273 - 281 .
ÃTakahashi H , Takahashi N , ÃMorikawa Y , et al . Efficacy of pile-type improvement against lateral flow of liquefied ground [J]. Ge'otechnique , 2016 , 66 ( 8 ): 617 - 626 .
刘靖雯 . 倾斜砂土场地浅埋管道隆起(上浮)离心模型试验研究 [D]. 杭州 : 浙江大学 , 2017 .
Liu J W . Centrifuge modeling on uplift behavior of shallow buried pipe in inclined sand [D]. Hangzhou : Zhejiang University , 2017 . (in Chinese)
汪明武 , Tobita T , Iai S . 倾斜液化场地桩基地震响应离心机试验研究 [J]. 岩石力学与工程学报 , 2009 , 28 ( 10 ): 2012 - 2017 .
Wang M W , Tobita T , Iai S . Dynamic centrifuge tests of seismic responses of pile foundations in inclined liquefiable soils [J]. Chinese Journal of Rock Mechanics and Engineering , 2009 , 28 ( 10 ): 2012 - 2017 . (in Chinese)
宋二祥 , 武思宇 , 王宗纲 . 地基-结构系统振动台模型试验中相似比的实现问题探讨 [J]. 土木工程学报 , 2008 , 41 ( 10 ): 87 - 92 .
Song E X , Wu S Y , Wang Z G . A tentative solution for similitude realization in shaking table test of SSI systems [J]. China Civil Engineering Journal , 2008 , 41 ( 10 ): 87 - 92 . (in Chinese)
詹永祥 , 蒋关鲁 , 牛国辉 , 等 . 桩板结构路基动力模型试验研究 [J]. 岩土力学 , 2008 , 29 ( 8 ): 2097 - 2102 .
Zhan Y X , Jiang G L , Niu G H , et al . Model experimental research on dynamic performance of pile-plank embankment [J]. Rock and Soil Mechanics , 2008 , 29 ( 8 ): 2097 - 2102 . (in Chinese)
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