浮码头大跨度钢引桥及栈桥整体结构有限元数值模拟
发布时间：2018-09-06 10:26
【摘要】：在水位落差大的山区河流,为便于生产,液化石油码头多采用浮码头结构型式。本文以泸州油库码头工程为依托,简要介绍了浮码头工程常用的结构型式、主要组成部分。泸州油库码头活动钢引桥采用下承式平行弦桁架结构,固定栈桥采用桩柱式结构。在介绍有限元的基本理论后,根据工程设计图纸,采用有限元软件对该工程进行分析。旨在实现该类浮码头结构更为合理的设计,为今后该类工程结构的设计提供一定的参考。具体所做工作如下:①采用土木工程专用有限元软件Midas/civil建立钢引桥梁单元模型,在定义单元类型和实常数、施加荷载和边界条件的基础上,开展对活动钢引桥的初步研究。根据钢引桥在三种工况、三种荷载组合作用下的强度和刚度等力学特性,确定钢引桥结构的安全可靠性。同时在相同的荷载、工况条件下,改变钢引桥结构型式,保持相同的挠度,分析空腹拱桁式钢引桥的力学性能。②针对在设计高水位和设计低水位工况下,固定栈桥结构能否满足安全使用方面要求。采用通用有限元软件ABAQUS建立固定栈桥实体模型,考虑岸坡土体对码头桩基作用效应,研究了固定栈桥结构在两种工况下的静力特性。根据软件模拟得出的混凝土固定栈桥结构的应力应变云图,对固定栈桥结构的强度进行评定。③在有限元模型的基础上研究了固定栈桥结构的动力特性。根据模态分析的基本理论和结构自振特性,研究了固定栈桥结构的刚度分布规律。
[Abstract]:In order to facilitate production, floating wharf structure is often used in liquefied petroleum terminals in mountainous rivers with large water level difference. Based on Luzhou oil depot wharf project, this paper briefly introduces the common structural types and main components of Floating Wharf project. After introducing the basic theory of the finite element method and according to the engineering design drawings, the project is analyzed by the finite element software. The purpose is to achieve a more reasonable design of this kind of Floating Wharf structure, and to provide a certain reference for the future design of this kind of Engineering structure. The element model of the steel approach bridge is established by the meta-software Midas/civil. Based on the definition of the element type and real constants, loading and boundary conditions, the preliminary study on the active steel approach bridge is carried out. At the same time, under the same load and working conditions, changing the structure of the steel approach bridge and keeping the same deflection, the mechanical properties of the open-web arch truss steel approach bridge are analyzed. Considering the effect of slope soil on pile foundation of wharf, the static characteristics of fixed Trestle Structure under two working conditions are studied. The strength of fixed trestle structure is evaluated according to the stress-strain nephogram of concrete fixed trestle structure obtained by software simulation. According to the basic theory of modal analysis and the natural vibration characteristics of the structure, the stiffness distribution law of the fixed trestle structure is studied.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U441
本文编号：2226073
[Abstract]:In order to facilitate production, floating wharf structure is often used in liquefied petroleum terminals in mountainous rivers with large water level difference. Based on Luzhou oil depot wharf project, this paper briefly introduces the common structural types and main components of Floating Wharf project. After introducing the basic theory of the finite element method and according to the engineering design drawings, the project is analyzed by the finite element software. The purpose is to achieve a more reasonable design of this kind of Floating Wharf structure, and to provide a certain reference for the future design of this kind of Engineering structure. The element model of the steel approach bridge is established by the meta-software Midas/civil. Based on the definition of the element type and real constants, loading and boundary conditions, the preliminary study on the active steel approach bridge is carried out. At the same time, under the same load and working conditions, changing the structure of the steel approach bridge and keeping the same deflection, the mechanical properties of the open-web arch truss steel approach bridge are analyzed. Considering the effect of slope soil on pile foundation of wharf, the static characteristics of fixed Trestle Structure under two working conditions are studied. The strength of fixed trestle structure is evaluated according to the stress-strain nephogram of concrete fixed trestle structure obtained by software simulation. According to the basic theory of modal analysis and the natural vibration characteristics of the structure, the stiffness distribution law of the fixed trestle structure is studied.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U441
【参考文献】
相关期刊论文 前1条
1 董华钢;高桩码头设计按空间与平面计算方法的比较[J];水运工程;2001年09期
相关硕士学位论文 前1条
1 杜明亮;考虑渗流作用的土质边坡稳定性分析[D];河海大学;2007年
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