高桩码头加固改造工程计算方法对比分析
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摘要
以江苏某高桩码头加固改造工程为例,分别建立平面和空间有限元模型,计算了不同荷载组合工况下改造后的码头内力情况。研究结果表明:(1)高桩码头加固改造工程按平面和空间两种计算方法在同一荷载组合情况下计算所得的桩基内力比较接近;(2)平面有限单元法将所有荷载简化后均作用在横向排架上,而空间有限元法则可根据荷载实际分布情况加载,两种计算方法对横梁内力计算结果差别较大。(3)根据平面和空间有限元计算方法的特点,对于比较重要和工程量较大的加固改造工程,建议用平面有限元法计算确定工程方案,用空间有限元法对主要构件进行内力分析与配筋。
A project, which is a high-pile wharf being reconstructed and reinforced in Jiangsu, can be an exam-ple to be analyzed by plane and space finite element models separately and the internal forces of the reconstructedwharf were calculated under different loading combinations. The conclusions of the research show that:(1)Basedon the results of plane and space calculation methods, the pile internal forces in the reconstructed and reinforcedhigh-pile wharf approximate to each other under the same loading combination.(2)The plane finite element modelmakes all the loads assumed to act on the transverse bents after the simplification. However, the space finite ele-ment model can be loaded by the real loading distribution. Therefore, a great difference exists in the results of beaminternal forces due to the two calculation methods.(3)According to the characteristics of the plane and space finiteelement calculation method, for the more important and large quantities of reinforcement and reconstruction project,the plane finite element method is suggested to use for the project plan, and it is suggested to use the space finiteelement method to analyze the internal force and arrange reinforcements of main components.
A project, which is a high-pile wharf being reconstructed and reinforced in Jiangsu, can be an exam-ple to be analyzed by plane and space finite element models separately and the internal forces of the reconstructedwharf were calculated under different loading combinations. The conclusions of the research show that:(1)Basedon the results of plane and space calculation methods, the pile internal forces in the reconstructed and reinforcedhigh-pile wharf approximate to each other under the same loading combination.(2)The plane finite element modelmakes all the loads assumed to act on the transverse bents after the simplification. However, the space finite ele-ment model can be loaded by the real loading distribution. Therefore, a great difference exists in the results of beaminternal forces due to the two calculation methods.(3)According to the characteristics of the plane and space finiteelement calculation method, for the more important and large quantities of reinforcement and reconstruction project,the plane finite element method is suggested to use for the project plan, and it is suggested to use the space finiteelement method to analyze the internal force and arrange reinforcements of main components.
引文
[1]华晓敏,周晓春,李增光.镇江港大港港区2#-5#泊位码头结构加固改造工程设计[J].水运工程,2011(10):71-75.HUA X M,ZHOU X C,LI Z G.Strengthening design of berths No.2~No.5 of Dagang port district in Zhenjiang port[J].Port&Waterway Engineering,2011(10):71-75.
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[6]JTS 167-4-2012,港口工程桩基规范[S].
[7]JTS 144-1-2010,港口工程荷载规范[S].
[2]陈秀瑛,范平易.长江石化码头结构的升级改造设计[J].水运工程,2011(11):129-132.CHEN X Y,FAN P Y.Design of structure upgrade on petrochemical wharf in the Yangtze River[J].Port&Waterway Engineering,2011(11):129-132.
[3]王轩.天津港老旧码头加固和加深改造[J].港工技术,2011(1):29-31.WANG X.Consolidation and Deepening Renovation of Old Berth in Tianjin Port[J].Port Engineering Technology,2011(1):29-31.
[4]王婷婷,陈振民,何文钦.高桩梁板码头结构设计中的空间有限元分析[J].水运工程,2009(7):118-123.WANG T T,CHEN Z M,HE W Q.Spatial finite element method applied in beam-slab high-pile wharf′s structural design[J].Port&Waterway Engineering,2009(7):118-123.
[5]交通运输部第一航务工程勘察设计院.海港工程设计手册(中册)[M].北京:人民交通出版社,1994.
[6]JTS 167-4-2012,港口工程桩基规范[S].
[7]JTS 144-1-2010,港口工程荷载规范[S].