强震水下盾构管廊砂土液化区穿越方案研究
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摘要
以"河北第一盾"曹妃甸工业区综合管廊工程为依托,选取典型砂土液化断面,利用FLAC2D有限差分软件对强震水下盾构管廊砂土液化区穿越方案进行对比分析。研究结果表明:地层加固范围取3 m,地基强度参数提高1倍即能达到安全与经济的平衡。其结论可为类似工程提供很好的参考和借鉴。
Based on the comprehensive pipe Project of Caofeidian Industrial Zone Gallery known as ‘the 1st shield of He Bei',select typical section of sand liquefaction,cossing scheme for underwater shield tunnel through sand liquefaction zone in strong earthquake load is studied by flac2 d. The result show that the balance of safety and economic can be reached by range of 3m stratum reinforcement and increasing foundation strength parameters to 2 times. and provided some reference to perfect the related design specifications.
Based on the comprehensive pipe Project of Caofeidian Industrial Zone Gallery known as ‘the 1st shield of He Bei',select typical section of sand liquefaction,cossing scheme for underwater shield tunnel through sand liquefaction zone in strong earthquake load is studied by flac2 d. The result show that the balance of safety and economic can be reached by range of 3m stratum reinforcement and increasing foundation strength parameters to 2 times. and provided some reference to perfect the related design specifications.
引文
[1]刘千伟.上海长江隧道建设关键技术综述[A]//地下工程建设与环境和谐发展—第四届中国国际隧道工程研讨会文集[C].上海:同济大学出版社,2009:54-65.
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[3]刘光磊,宋二祥,刘华北.可液化地层中地铁隧道地震响应数值模拟及其试验验证[J].岩土工程学报,2007,29(12):1815
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[5]黄娟,彭立敏,李兴龙.可液化地层狮子洋盾构隧道横向地震响应规律及减震措施研究[J].岩土工程学报,2009,31(10):1539-1546.
[6]卢普伟,梁邦炎,资利军.港珠澳大桥隧道工程沉管法与盾构法比选分析[J].施工技术,2012,41(372):89-91.
[7]Charlie WA,Paul JJaeobs,Doehring DO.Blast-indueedliquefaetion ofanalluvialsanddeposit[J].Geoteehnieal Testing Journal,1992,15(l):14-23.
[8]Charlie WA,Veyera George E,Durnford Deanna S,etal.Porewater Pressureinereasesin5011androekfromundergroundehemiealand nu Clearexplosion[J].Engineering Geology,1996,43(2):225-236.
[9]国胜兵,王明洋,钱七虎.饱和砂土爆炸液化特性研究[J].岩土力学,2007,28(3):427-435.
[10]叶耀东.软土地区运营地铁盾构隧道结构变形及健康诊断方法研究[D].上海:同济大学,2007.
[11]陈松洁.软弱地层中水下高速铁路盾构隧道列车振动响应分析[D].长沙:中南大学,2010.
[2]王胜平,阎高翔.南京地铁一号线许府巷-南京站盾构区间地震液化分析[J].现代隧道技术,2009,38(2):19-23.
[3]刘光磊,宋二祥,刘华北.可液化地层中地铁隧道地震响应数值模拟及其试验验证[J].岩土工程学报,2007,29(12):1815
[4]CHOU H S,YANG C Y,HSIEH B J,et al.A study of liquefaction related damages on shield tunnels[J].Tunneling and Underground Space Technology,2001,16(3):185-193.
[5]黄娟,彭立敏,李兴龙.可液化地层狮子洋盾构隧道横向地震响应规律及减震措施研究[J].岩土工程学报,2009,31(10):1539-1546.
[6]卢普伟,梁邦炎,资利军.港珠澳大桥隧道工程沉管法与盾构法比选分析[J].施工技术,2012,41(372):89-91.
[7]Charlie WA,Paul JJaeobs,Doehring DO.Blast-indueedliquefaetion ofanalluvialsanddeposit[J].Geoteehnieal Testing Journal,1992,15(l):14-23.
[8]Charlie WA,Veyera George E,Durnford Deanna S,etal.Porewater Pressureinereasesin5011androekfromundergroundehemiealand nu Clearexplosion[J].Engineering Geology,1996,43(2):225-236.
[9]国胜兵,王明洋,钱七虎.饱和砂土爆炸液化特性研究[J].岩土力学,2007,28(3):427-435.
[10]叶耀东.软土地区运营地铁盾构隧道结构变形及健康诊断方法研究[D].上海:同济大学,2007.
[11]陈松洁.软弱地层中水下高速铁路盾构隧道列车振动响应分析[D].长沙:中南大学,2010.
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