泥石流对特载作用下高墩桥梁的影响
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摘要
针对云南西部山区泥石流多发区设置在泥石流沟床中的桥墩容易遭受泥石流冲击直接危害桥梁的安全问题,文中结合桥梁、泥石流及水工等规范得出泥石流对桥墩冲击力的适用计算方法。以澜沧江上游库区公路上一高墩桥梁为例,根据提出的方法进行验算,其结果符合工程实际,具有较好的实际工程应用价值和前景,其方法和结论可以供其他同类工程参考。
In the western regions of China where mudslides occur frequently,the traffic routes always need to go through the mudslides channel,the pier bridge built in the mudslides channels are easily suffered the impact of the mudslides.The methods of calculating the impact pressure are raised for designing highway and municipal bridges.This paper derives the impact pressure calculating formula of the mudslides in Lancang river upstream reservoir area with a highway high pier bridge the proposed method of calculation has the good practical application value and prospect,and can be a reference for other similar projects.
In the western regions of China where mudslides occur frequently,the traffic routes always need to go through the mudslides channel,the pier bridge built in the mudslides channels are easily suffered the impact of the mudslides.The methods of calculating the impact pressure are raised for designing highway and municipal bridges.This paper derives the impact pressure calculating formula of the mudslides in Lancang river upstream reservoir area with a highway high pier bridge the proposed method of calculation has the good practical application value and prospect,and can be a reference for other similar projects.
引文
[1]王志华,曹伟,陈国兴.考虑流固强耦合效应的深水桥墩地震反应分析[J].防灾减灾工程学报,2010,30(5):517-523.WANG Zhi-hua,CAO Wei,CHEN Guo-xing.Seismic response analysis of deepwater bridge pier considering close fluid-structureinteraction effects[J].Journal of Disaster Prevention and Mitigation Engineering,2010,30(5):517-523.(in Chinese)
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[4]CHEN H K,TANG H M,YE S Q.Research on method to calculate velocities of solid phase and liquid phase in debris flow[J].Applied Mathematics and Mechanics,2006,27(3):399-408.
[5]Di Santolo A S,Evangelists A.Some observations of the prediction of the dynamic parameters of debris flows in pyroclasticdeposits in the campania region of Italy[J].Nat Hazards,2009,50:605-622.
[6]Tecca P R,Genevois R.Field observations of the June 30,2001 debris flow at Acquabona Dolomites Italy[J].Landslides,2008,5:431-444.
[7]何思明,李新坡,吴永.考虑弹塑性变形的泥石流诱块石冲击力计算[J].岩石力学与工程学报,2007,26(8):1664-1669.HE Si-ming,LI Xin-po,WU Yong.Calculation of impact force of outrunner blocks in debris flow considering elastoplasticdeformation[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(8):1664-1669.(in Chinese)
[8]何思明,吴永,沈均.泥石流大块石冲击力的简化计算[J].自然灾害学报,2009,18(5):51-56.HE Si-ming,WU Yong,SHEN Jun.Simplified calculation of impact force of massive in debris flow[J].Journal of NaturalDisaters,2009,18(5):51-56.(in Chinese)
[9]王强,何思明,张俊云.泥石流防撞墩冲击力理论计算方法[J].防灾减灾工程学报,2009,29(4):423-427.WAGN Qiang,HE Si-ming,ZHANG Jun-yun.Theoretical method for calculating impact force on debris flow pratection piers[J].Journal of Disater Prevention and Itigation Engineering,2009,29(4):423-427.(in Chinese)
[10]陈洪凯,唐红梅,陈野鹰.公路泥石流力学[M].北京:科学出版社,2007.
[11]丁继新,杨志法,尚彦军.川藏公路然乌-鲁朗段泥石流灾害成因分析及定量化分区[J].地质力学学报,2006,12(2):203-210.DING Ji-xin,YANG Zhi-fa,SHANG Yan-jun.Cause analysis and quantitative zonation of mudflow hazards along the Rawu-Lu-nang Section,Sichuan-tibet highway[J].Journal of Geomechanics,2006,12(2):203-210.(in Chinese)
[12]中国地质调查局.泥石流灾害防治工程设计规范(DZ/T0239—2004)[S].北京:中国地质调查局,2004.
[13]中华人民共和国国土资源部地质环境司.泥石流灾害防治工程勘察规范(DZ-T0220—2006)[S].北京:中国标准出版社,2006.
[14]中交公路规划设计院.公路桥涵地基与基础设计规范(JTG D63—2007)[S].北京:人民交通出版社,2007.
[15]中交公路规划设计院.公路钢筋混凝土及预应力混凝土桥涵设计规范(JTG D62—2004)[S].北京:人民交通出版社,2004.
[2]钟盈,陈洪凯.泥石流淤埋桥梁后的毁损机制分析[J].重庆交通大学学报:自然科学版,2010,29(5):667-673.ZHONG Ying,CHEN Hong-kai.Destroyed mechanism analysis of bridge buried by debris flow[J].Journal of Chongqing JiaotongUniversity:Natural Science Edition,2010,29(5):667-673.(in Chinese)
[3]Prochaska A B,Santi P M,Higgins D,et al.A study of methods to estimate debris flow velocity[J].Landslides,2008,5(4):431-444.
[4]CHEN H K,TANG H M,YE S Q.Research on method to calculate velocities of solid phase and liquid phase in debris flow[J].Applied Mathematics and Mechanics,2006,27(3):399-408.
[5]Di Santolo A S,Evangelists A.Some observations of the prediction of the dynamic parameters of debris flows in pyroclasticdeposits in the campania region of Italy[J].Nat Hazards,2009,50:605-622.
[6]Tecca P R,Genevois R.Field observations of the June 30,2001 debris flow at Acquabona Dolomites Italy[J].Landslides,2008,5:431-444.
[7]何思明,李新坡,吴永.考虑弹塑性变形的泥石流诱块石冲击力计算[J].岩石力学与工程学报,2007,26(8):1664-1669.HE Si-ming,LI Xin-po,WU Yong.Calculation of impact force of outrunner blocks in debris flow considering elastoplasticdeformation[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(8):1664-1669.(in Chinese)
[8]何思明,吴永,沈均.泥石流大块石冲击力的简化计算[J].自然灾害学报,2009,18(5):51-56.HE Si-ming,WU Yong,SHEN Jun.Simplified calculation of impact force of massive in debris flow[J].Journal of NaturalDisaters,2009,18(5):51-56.(in Chinese)
[9]王强,何思明,张俊云.泥石流防撞墩冲击力理论计算方法[J].防灾减灾工程学报,2009,29(4):423-427.WAGN Qiang,HE Si-ming,ZHANG Jun-yun.Theoretical method for calculating impact force on debris flow pratection piers[J].Journal of Disater Prevention and Itigation Engineering,2009,29(4):423-427.(in Chinese)
[10]陈洪凯,唐红梅,陈野鹰.公路泥石流力学[M].北京:科学出版社,2007.
[11]丁继新,杨志法,尚彦军.川藏公路然乌-鲁朗段泥石流灾害成因分析及定量化分区[J].地质力学学报,2006,12(2):203-210.DING Ji-xin,YANG Zhi-fa,SHANG Yan-jun.Cause analysis and quantitative zonation of mudflow hazards along the Rawu-Lu-nang Section,Sichuan-tibet highway[J].Journal of Geomechanics,2006,12(2):203-210.(in Chinese)
[12]中国地质调查局.泥石流灾害防治工程设计规范(DZ/T0239—2004)[S].北京:中国地质调查局,2004.
[13]中华人民共和国国土资源部地质环境司.泥石流灾害防治工程勘察规范(DZ-T0220—2006)[S].北京:中国标准出版社,2006.
[14]中交公路规划设计院.公路桥涵地基与基础设计规范(JTG D63—2007)[S].北京:人民交通出版社,2007.
[15]中交公路规划设计院.公路钢筋混凝土及预应力混凝土桥涵设计规范(JTG D62—2004)[S].北京:人民交通出版社,2004.
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