河渠高边坡开挖对邻近桥墩桩基的影响分析
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摘要
在引江济淮菜子湖线C5标河渠工程施工中,河渠边坡开挖线距附近的某铁路特大桥桥墩桩基较近,采用MIDAS-GTS NX通用岩土有限元分析软件,构建了模拟输水河渠高边坡开挖施工的数值模型,基于该模型,分析了输水河渠高边坡开挖对邻近桥墩桩基的影响。分析结果表明,由开挖引起的边坡土体位移影响范围较小,对桥墩桩基产生的侧向水平位移微小,引江济淮菜子湖线C5标邻近该铁路桥处的边坡开挖施工及运行引起桥墩桩基的微小位移,不影响该桥的正常使用。
On the account of the short distance between excavation line of the canal slope and the high-speed railway bridge pile foundation encountered in C5 Tender of Caizi Lake Line in the project of leading Yangtze River to Huai River, the MIDAS-GTS NX general geotechnical FEM software was used for simulating the excavation of high slope in the canal for water conveyance, whose influence was discussed based on this numerical model. The calculation results show that the displacement of slope soil caused by excavation has a little influence on the range and the lateral horizontal displacement of the bridge pile foundation. The construction of the slope excavation near the bridge does not have a major impact on the pile foundation of the bridge nearby.
On the account of the short distance between excavation line of the canal slope and the high-speed railway bridge pile foundation encountered in C5 Tender of Caizi Lake Line in the project of leading Yangtze River to Huai River, the MIDAS-GTS NX general geotechnical FEM software was used for simulating the excavation of high slope in the canal for water conveyance, whose influence was discussed based on this numerical model. The calculation results show that the displacement of slope soil caused by excavation has a little influence on the range and the lateral horizontal displacement of the bridge pile foundation. The construction of the slope excavation near the bridge does not have a major impact on the pile foundation of the bridge nearby.
引文
[1]DE B E E.The effects of horizontal loads on piles due to surcharge or seismic effects[C]//Proc 9th ICSMFE.Tokyo,1977.
[2]陈福全,潘钦峰.被动荷载作用下邻近桩基的研究概况与进展[J].福建工程学院学报,2004,2(1):23-32.
[3]陈福全,汪金卫,刘毓氚.基坑开挖时邻近桩基性状的数值分析[J].岩土力学,2008,29(7):1971-1976.
[4]杨敏,周洪波,杨桦.基坑开挖与邻近桩基相互作用分析[J].土木工程学报,2005,38(4):91-96.
[5]沈健,李耀良,王建华.深基开挖对邻近高架基础影响的三维数值分析[J].地下空间与工程学报,2005,1(4):518-521.
[6]李龙剑,杨宏伟,李政林,等.基坑开挖对邻近桥梁桩基的影响分析[J].地下空间与工程学报,2011,7(S2):1697-1701.
[7]朱敏,陈容文,郭晓刚,等.深厚软弱地层超深基坑支护分析[J].人民长江,2011,42(20):75-78.
[8]安徽省水利水电勘测设计院,中水淮河规划设计研究有限公司,安徽省交通勘察设计院有限公司,等.引江济淮工程初步设计报告(安徽段)(审定版)[R].2017.
[9]安徽省水利水电勘测设计院.引江济淮工程菜子湖线C5标(67+450~72+240)施工图阶段工程地质勘查报告[R].2018.
[10]北京迈达斯技术有限公司技术中心岩土团队.GTS NX通用岩土有限元分析软件理论分析手册[R].
[11]欧阳院平,姚劲松.武汉轨道交通名都车站深基坑有限元分析[J].人民长江,2011,42(20):72-74.
[12]李欣,郑自斌.基于数值分析的软土深基坑支撑体系优化设计[J].人民长江,2016,47(24):68-70.
[2]陈福全,潘钦峰.被动荷载作用下邻近桩基的研究概况与进展[J].福建工程学院学报,2004,2(1):23-32.
[3]陈福全,汪金卫,刘毓氚.基坑开挖时邻近桩基性状的数值分析[J].岩土力学,2008,29(7):1971-1976.
[4]杨敏,周洪波,杨桦.基坑开挖与邻近桩基相互作用分析[J].土木工程学报,2005,38(4):91-96.
[5]沈健,李耀良,王建华.深基开挖对邻近高架基础影响的三维数值分析[J].地下空间与工程学报,2005,1(4):518-521.
[6]李龙剑,杨宏伟,李政林,等.基坑开挖对邻近桥梁桩基的影响分析[J].地下空间与工程学报,2011,7(S2):1697-1701.
[7]朱敏,陈容文,郭晓刚,等.深厚软弱地层超深基坑支护分析[J].人民长江,2011,42(20):75-78.
[8]安徽省水利水电勘测设计院,中水淮河规划设计研究有限公司,安徽省交通勘察设计院有限公司,等.引江济淮工程初步设计报告(安徽段)(审定版)[R].2017.
[9]安徽省水利水电勘测设计院.引江济淮工程菜子湖线C5标(67+450~72+240)施工图阶段工程地质勘查报告[R].2018.
[10]北京迈达斯技术有限公司技术中心岩土团队.GTS NX通用岩土有限元分析软件理论分析手册[R].
[11]欧阳院平,姚劲松.武汉轨道交通名都车站深基坑有限元分析[J].人民长江,2011,42(20):72-74.
[12]李欣,郑自斌.基于数值分析的软土深基坑支撑体系优化设计[J].人民长江,2016,47(24):68-70.