本报告旨在研究一种新式的用于浅海石油平台的结构方式——桩基石油平 台。 首先，平面布置和结构型式的研究。由于高桩梁板码头与石油平台在使用功 能上有很大的区别，因此平台的平面布置需要满足石油平台的使用要求，考虑工 作人员在平台上生活的质量，以及在事故逃生等方面做到最优化。另外，还要考 虑自然条件对平台结构的影响，根据不同功能区域的不同荷载情况，将各个功能 区域在满足上述条件的情况下布置在更为合适的位置，以充分利用桩基平台结构 上的特点。在平台结构型式的设计上，要以满足使用要求，满足安全稳定性为基 础，在并在满足上述要求的基础上，设计出更加适用于石油平台工艺的结构型式， 并对得出的结构型式进行优化设计。 其次，建立平台数学模型，对平台进行受力分析。考虑平台受到的各种荷载， 特别是钻井过程中产生的振动荷载以及冰荷载，采用有限元软件 ABAQUS 对结 构进行动力计算，得出各构件的受力情况。并分析对结构尺寸调整时的内力变化 情况，最终得到一个安全、方便、节约的桩基海上石油平台结构方案。 最后，总结振动荷载对平台的作用规律。将平台所受到的各种荷载进行合理 的组合，找出平台最不利的受力情况。并在采用 ABAQUS 有限元软件对实际结 构进行模拟过程中，关于单元选取，及各构件间的接触问题，也有相应的研究。 作为一种新的石油平台的结构方式，尚处于摸索阶段，仍有许多问题需要解 决，本文主要对如何合理进行平面布置及在振动荷载及冰荷载作用下平台的受力 特点等进行了研究，得到了一些规律，对以后的相关研究有一定的帮助。 关键词，近海石油平台 振动荷载 冰荷载 ABAQUSABSTRACT This paper aims at studying a new-style structure for oil platform in offshore named piled base oil platform. First, ascertain of the layout and structure of the programme. Because there is so much difference in the use of functions between the high pile Beam Pier and the oil platforms, the layout should be satisfy with the use of the oil platform. Otherwise the worker’s life quality and the safety should also be takern into consideration. In addition, we should consider the natural conditions on the structure of the platform. According to different functions of different regions of the load situation, we design each functional area which will meet the above conditions that are more appropriate under the arrangement in the position to take full advantage of the pile on the platform structure features.Under the oil platform called for the use of several possible layout of the programme, and these programmes to conduct a comprehensive comparison, the final layout of a more reasonable programme. To beam high pile plate terminals based on the structure, according to the offshore oil platform characteristics of the force to carry out the preliminary design of the structure, proposed several possible structure of the programme and structure of the programme in the use of these functions, the situation in the areas of analysis, Determine a final plan, and its structural optimization. Next, establish the mathematical models of platform and analysis the load of the platform. Considering each kind of load which the platform is received, especially vibrational load and ice load which produce in the well drilling process. Finite element software ABAQUS is used to carry on the power computation to the structure. And various components' stress situation are obtained. Finally, the function rules of the vibrational load to the platform are summarized. the vibrational load and other loads which the platform supports are carried on the reasonable combination, and then the most disadvantageous stress situation of the platform are studied .Through ABAQUS to simulate the process of the actual structure, the unit selection and the contact problem in each construction are also researched correspondingly.As a new oil platform's structure style , the platform the paper introduces is still at the fumble stage, many questions are still needed to be solved. The problems that how to carry on the plane layout in reasonable way and the characters of the platform in the vibrational load and the ice load function are mainly researched in this paper . Some rules are obtained, which has certain help to the later related research. KEY WORDS，Offshore oil platform, vibrational load, ice load, ABAQUS目 录 第一章 绪论..................................................................................................................1 1.1 研究背景 ................................................................................................................ 1 1.2 研究现状 ................................................................................................................ 1 1.3 本报告的主要工作和意义................................................................................. 3 第二章 平台平面布置的研究......................................................................................4 2.1 自然条件 ................................................................................................................ 4 2.2 平面布置研究 ....................................................................................................... 7 第三章 平台结构型式的研究....................................................................................14 3.1 平台结构型式的建立........................................................................................ 14 3.2 结构型式的比较................................................................................................. 16 3.3 结构主要参数的确定........................................................................................ 17 第四章 数值模拟........................................................................................................19 4.1 高桩梁板结构的设计计算原理 ..................................................................... 19 4.2 有限单元法在结构设计中的应用以及ABAQUS软件简介 ................... 20 4.3 几种高桩梁板结构的有限元方法................................................................. 22 4.4 动态模拟原理 ..................................................................................................... 23 4.5 结构的数值模型................................................................................................. 26 4.6 荷载 ....................................................................................................................... 29 4.7 平台的自振频率................................................................................................. 34 4.8 工况组合及内力结算结果............................................................................... 36 第五章 结论与展望....................................................................................................49 5.1 结论 ....................................................................................................................... 49 5.2 展望 ....................................................................................................................... 49