箱筒型基础栈桥结构稳定性研究
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摘要
箱筒型基础结构作为一种新型港口、海洋工程结构,虽然已在天津港防波堤等工程中采用,但其设计计算方法尚无规范或标准可循,相关研究成果也比较少。目前滩海路岛工程建设,存在着设计、施工难度大,建设周期长等问题,迫切需要进行设计建造的标准化研究,以满足滩海油田快速、高效开发的需要。本文结合埕海油田张东开发区海工工程的工程背景,运用有限元软件PLAXIS对箱筒型基础栈桥的受力进行了研究,总结出能指导工程设计施工的计算方法,具有一定的实用价值。
首先,本文基于大型岩土工程有限元软件PLAXIS,对埕海油田张东开发区海工工程进行了工程尺度模拟。并在不同工况条件下对筒侧土压力、筒底地基应力进行了分析,得出箱筒型基础结构栈桥稳定性的失稳破坏机制。
其次,针对软土地质条件和未来栈桥结构向深水深海发展的趋势,探讨了极限承载力随第一层土厚度、第二层土体参数、箱筒的直径、箱筒的入土深度变化的规律。
最后,编写FORTRAN程序提取各种力与工程界易于接受的算法比较。修正经典算法,使之能适用于箱筒型基础栈桥结构和软土地质。
本文为总结出能指导工程设计施工的计算方法进行了深入的研究和大量的计算。通过埕海油田张东开发区海工工程栈桥工程的工程实例验证,这套简化算法具有一定的实用价值。
As a new type of port and ocean engineering structure, structure of box and bucket foundation was used in breakwater of Tianjin harbor, but there is no standard or criterion for design and related research results are also less. Nowadays, build of structure of offshore road-island has problems in design, construction difficult, long construction period and other issues. And it needs study of standard of design and construction to satisfy rapid, efficient development of offshore oilfield. This paper, with the engineer in Chenghai oilfield Zhangdong development zone as the engineering background, using FEM program PLAXIS to study the forces of trestle structure of box and bucket foundation, conclude method that can guide construction design and worthful.
Firstly, this paper using geotechnical engineering FEM program PLAXIS to simulate physical size model of the engineer in Chenghai oilfield. And in different work conditions analyze earth pressure on lateral cylinder and foundation stress under the structure to find the failure mechanism of stability of structure of box and bucket foundation.
Secondly, for the weak geological soil condition and the future structure of the deep sea trestle trend, the influence on bearing capacity of thickness of first layer soil, soil parameter of second layer soil, diameter of the structure and embedded depth of structure are analyzed.
Finally, write FORTRAN program to get force to compare with algorithm accepted in engineering. And modify it to apply in trestle structure of box and bucket foundation and the weak geological soil condition.
This paper conclude algorithm to guide construction design by theoretical analysis and numerical computation. By testing with trestle structure in Chenghai oilfield Zhangdong development zone, this simplify algorithm is worthful.
首先,本文基于大型岩土工程有限元软件PLAXIS,对埕海油田张东开发区海工工程进行了工程尺度模拟。并在不同工况条件下对筒侧土压力、筒底地基应力进行了分析,得出箱筒型基础结构栈桥稳定性的失稳破坏机制。
其次,针对软土地质条件和未来栈桥结构向深水深海发展的趋势,探讨了极限承载力随第一层土厚度、第二层土体参数、箱筒的直径、箱筒的入土深度变化的规律。
最后,编写FORTRAN程序提取各种力与工程界易于接受的算法比较。修正经典算法,使之能适用于箱筒型基础栈桥结构和软土地质。
本文为总结出能指导工程设计施工的计算方法进行了深入的研究和大量的计算。通过埕海油田张东开发区海工工程栈桥工程的工程实例验证,这套简化算法具有一定的实用价值。
As a new type of port and ocean engineering structure, structure of box and bucket foundation was used in breakwater of Tianjin harbor, but there is no standard or criterion for design and related research results are also less. Nowadays, build of structure of offshore road-island has problems in design, construction difficult, long construction period and other issues. And it needs study of standard of design and construction to satisfy rapid, efficient development of offshore oilfield. This paper, with the engineer in Chenghai oilfield Zhangdong development zone as the engineering background, using FEM program PLAXIS to study the forces of trestle structure of box and bucket foundation, conclude method that can guide construction design and worthful.
Firstly, this paper using geotechnical engineering FEM program PLAXIS to simulate physical size model of the engineer in Chenghai oilfield. And in different work conditions analyze earth pressure on lateral cylinder and foundation stress under the structure to find the failure mechanism of stability of structure of box and bucket foundation.
Secondly, for the weak geological soil condition and the future structure of the deep sea trestle trend, the influence on bearing capacity of thickness of first layer soil, soil parameter of second layer soil, diameter of the structure and embedded depth of structure are analyzed.
Finally, write FORTRAN program to get force to compare with algorithm accepted in engineering. And modify it to apply in trestle structure of box and bucket foundation and the weak geological soil condition.
This paper conclude algorithm to guide construction design by theoretical analysis and numerical computation. By testing with trestle structure in Chenghai oilfield Zhangdong development zone, this simplify algorithm is worthful.
引文
[1]李伟,箱型吸力基础防波堤结构探讨,港工技术,2001,(z1):75～77
[2]李伟,别社安,天津港箱筒形基础防波堤结构工程试验,港口工程分会技术交流文集,2005
[3]孙百顺,张勇,王笑难等,钢箱筒基础结构应用优势及前景,水道港口,2006,27(06):384～389
[4]天津港(集团)有限公司,天津大学编,插入式箱筒型基础防波堤结构研究及应用,2004
[5]中交第一航务勘察设计院编,天津港防波堤延伸工程初步设计,2005
[6]李伟,可移动钢混箱筒型基础直立弧形连续墙防波堤结构,中国专利,200420029467,2005-08-03
[7]别社安,可移动圆筒基础防波堤结构,中国专利,02253146.7,2003-08-20
[8]中国石油天然气管道工程公司天津分公司,天津大学水运水利勘察设计研究所编,埕海油田张东开发区海工工程初步设计,2007
[9]陈文苏,软土蠕变沉降的数值模拟:[硕士学位论文],天津,天津大学,2004
[10]李存兴,箱筒型基础结构地基沉降研究:[硕士学位论文],天津,天津大学,2008
[11]文靖斐,箱筒型基础软土地基承载力研究:[硕士学位论文],天津,天津大学,2008
[12]王勖成,邵敏,有限单元法基本原理和数值方法(第2版),北京:清华大学出版社,1997
[13]朱伯芳,有限单元法原理与应用,北京:水利电力出版社,1979
[14]Quecedo M,Pastor M,Herreros M,et al,Numerical modelling of the propagation of fast landslides using the finite element Method,International Journal for Numerical Methods in Engineering,2004,59(6):755～794
[15]Zheng H,Liu D F,Li C G,Slope stability analysis based on elasto-plastic finite element method,International Journal for Numerical Methods in Engineering,2005,64(14):1871～1888
[16]Aubeny C P,Han S W,Murff J D,Inclined load capacity of suction caissons,International Journal for Numerical and Analytical Methods in Geomechanics,2003,27(14):1235～1254
[17]Introductory Version of Plaxis Code:[软件说明书],2000
[18]Plaxis 3D Foundation Reference Manual Version 1.5:[参考手册],2004
[19]谢康和,周健,岩土工程有限元分析理论与应用,北京:科学出版社,2002
[20]Plaxis 3D Foundation Material Manual Version 1.5:[材料模型手册],2004
[21]郑宏,李焯芬,谭国焕等,有限元分析的位移控制法及其应用,岩土工程学报,2002,(01):81～85
[22]卢廷浩主编,土力学,南京:河海大学出版社,2002
[23]M Hesar,KBR,Geotechnical design of the barracuda and caratinga suction anchors,Offshore Technology Conference 15137,Houston,2003,1～9
[24]港口工程荷载规范JTJ215-98,北京:人民交通出版社,1998
[25]王清等编,土体原位测试与工程勘察,北京:地质出版社,2006
[26]建筑地基基础设计规范GB50007-2002,北京:中国建筑工业出版社,2002
[27]中国石油天然气管道工程有限公司编,张东进海路人工进场工程(进海路部分)岩土工程勘察报告,2006
[28]Chen W F,Limit analysis and soil plasticity,New York:Limit analysis and soil plasticity,1975
[29]张继富,单因素敏感性分析在建设工程中的应用探索,甘肃科技,2008,24(08):106～107
[30]孙曦源,水平荷载作用下软土地基中桶形基础工作机理及承载性能研究:[博士学位论文],大连,大连理工大学,2009
[31]薛守义,高等土力学,北京:中国建材工业出版社,2007
[32]罗定安,工程结构数值分析方法与程序设计,天津:天津大学出版社,1995
[33]港口工程地基规范JTJ250-98,北京:人民交通出版社,1998
[34]袁凡凡,栾茂田,闫澍旺等,港口工程中非均质层状地基承载力计算方法,岩土力学,2006,27(7):1124～1128
[35]邱驹主编,港工建筑物,天津:天津大学出版社,2002
[2]李伟,别社安,天津港箱筒形基础防波堤结构工程试验,港口工程分会技术交流文集,2005
[3]孙百顺,张勇,王笑难等,钢箱筒基础结构应用优势及前景,水道港口,2006,27(06):384～389
[4]天津港(集团)有限公司,天津大学编,插入式箱筒型基础防波堤结构研究及应用,2004
[5]中交第一航务勘察设计院编,天津港防波堤延伸工程初步设计,2005
[6]李伟,可移动钢混箱筒型基础直立弧形连续墙防波堤结构,中国专利,200420029467,2005-08-03
[7]别社安,可移动圆筒基础防波堤结构,中国专利,02253146.7,2003-08-20
[8]中国石油天然气管道工程公司天津分公司,天津大学水运水利勘察设计研究所编,埕海油田张东开发区海工工程初步设计,2007
[9]陈文苏,软土蠕变沉降的数值模拟:[硕士学位论文],天津,天津大学,2004
[10]李存兴,箱筒型基础结构地基沉降研究:[硕士学位论文],天津,天津大学,2008
[11]文靖斐,箱筒型基础软土地基承载力研究:[硕士学位论文],天津,天津大学,2008
[12]王勖成,邵敏,有限单元法基本原理和数值方法(第2版),北京:清华大学出版社,1997
[13]朱伯芳,有限单元法原理与应用,北京:水利电力出版社,1979
[14]Quecedo M,Pastor M,Herreros M,et al,Numerical modelling of the propagation of fast landslides using the finite element Method,International Journal for Numerical Methods in Engineering,2004,59(6):755～794
[15]Zheng H,Liu D F,Li C G,Slope stability analysis based on elasto-plastic finite element method,International Journal for Numerical Methods in Engineering,2005,64(14):1871～1888
[16]Aubeny C P,Han S W,Murff J D,Inclined load capacity of suction caissons,International Journal for Numerical and Analytical Methods in Geomechanics,2003,27(14):1235～1254
[17]Introductory Version of Plaxis Code:[软件说明书],2000
[18]Plaxis 3D Foundation Reference Manual Version 1.5:[参考手册],2004
[19]谢康和,周健,岩土工程有限元分析理论与应用,北京:科学出版社,2002
[20]Plaxis 3D Foundation Material Manual Version 1.5:[材料模型手册],2004
[21]郑宏,李焯芬,谭国焕等,有限元分析的位移控制法及其应用,岩土工程学报,2002,(01):81～85
[22]卢廷浩主编,土力学,南京:河海大学出版社,2002
[23]M Hesar,KBR,Geotechnical design of the barracuda and caratinga suction anchors,Offshore Technology Conference 15137,Houston,2003,1～9
[24]港口工程荷载规范JTJ215-98,北京:人民交通出版社,1998
[25]王清等编,土体原位测试与工程勘察,北京:地质出版社,2006
[26]建筑地基基础设计规范GB50007-2002,北京:中国建筑工业出版社,2002
[27]中国石油天然气管道工程有限公司编,张东进海路人工进场工程(进海路部分)岩土工程勘察报告,2006
[28]Chen W F,Limit analysis and soil plasticity,New York:Limit analysis and soil plasticity,1975
[29]张继富,单因素敏感性分析在建设工程中的应用探索,甘肃科技,2008,24(08):106～107
[30]孙曦源,水平荷载作用下软土地基中桶形基础工作机理及承载性能研究:[博士学位论文],大连,大连理工大学,2009
[31]薛守义,高等土力学,北京:中国建材工业出版社,2007
[32]罗定安,工程结构数值分析方法与程序设计,天津:天津大学出版社,1995
[33]港口工程地基规范JTJ250-98,北京:人民交通出版社,1998
[34]袁凡凡,栾茂田,闫澍旺等,港口工程中非均质层状地基承载力计算方法,岩土力学,2006,27(7):1124～1128
[35]邱驹主编,港工建筑物,天津:天津大学出版社,2002