可装拆式冰壶球场地冰面支承结构的力学性能研究

发布时间：2018-06-30 02:14

本文选题：支承面板 + 支承架体　；参考：《哈尔滨工业大学》2017年硕士论文

【摘要】：支承面板的设计是冰壶球赛道平台设计中的组成部分,支承面板与下部支承钢架连接组成的平台支承结构是冰壶球场地能否满足世界冰壶联合会(WCF)赛道标准的关键部分。支承结构不仅仅需要设计简洁、传力明确、组装方便、具有很强的刚度,同时为了满足各项赛事舒适度的要求,对平台支承结构的竖向自振频率也有相当高的目标要求。此外在冰壶球赛道后期维护时,为了使冰面支承结构能够承受大型浇冰车的轮压荷载,冰面最大沉降量需要进行控制。本文利用了试验和有限元模拟相结合的方法对冰面支承结构进行了方案设计和优化,研究了不同支承面板受载时各部分的沉降和整体竖向自振频率。同时也研究了不同支承结构的力学性能,支承架体的节点连接性能。主要内容如下:1、初步设计了水立方冬奥会冰壶球场地的可装拆支承方案,设计内容包括支承架体、面板单元、组成构件之间的连接方式等。将面板单元设计成一个内填挤塑板的带肋木箱,并对内部构造和材料属性进行了深入研究。2、对木箱面板单元进行了多工况静载试验,得到了木箱面板单元的承载力、刚度和破坏模式的关键指标,并使用ABAQUS有限元程序进行分析论证。提出优化方案,证实了所提面板单元具有足够的刚度和承载力,能够为冰壶球赛道冰面提供有效支承。3、基于所提出的冰面支承方案,在水立方泳池内完成了可装拆冰壶球场地的现场整体试验测试。测试一共分为六个阶段,包括对支承架体、支承面板和冰层的刚度、承载力、长期变形等静力性能以及频率、加速度等动力特性的测试,验证了所提整体支承方案能够满足冬奥会冰壶球比赛要求。4、使用ABAQUS有限元程序,对现场整体试验结果进行了数值模拟,进一步分析了冰面支承结构在冰壶球比赛运动员300kg使用荷载作用下,整体最大竖向位移和一阶自振频率。尤其对考虑大型浇冰车轮压荷载作用下冰面支承结构的竖向最大位移和冰层内应力水平进行了深入分析。
[Abstract]:The design of the supporting panel is an integral part of the design of the curling track platform. The platform supporting structure composed of the supporting panel and the lower supporting steel frame is the key part of whether the curling field can meet the WCF track standard. The supporting structure not only needs simple design, clear transmission, convenient assembly, but also has a very high target for the vertical natural vibration frequency of the platform supporting structure in order to meet the requirements of the comfort of various events. In addition, during the later maintenance of the curling track, the maximum settlement of the ice surface needs to be controlled in order to enable the ice supporting structure to withstand the wheel compression load of the large ice pouring vehicle. In this paper, the method of test and finite element simulation is used to design and optimize the ice bearing structure, and the settlement and vertical natural vibration frequency of different bearing panels are studied. At the same time, the mechanical properties of different supporting structures and the joint connection performance of the supporting frame are also studied. The main contents are as follows: 1. The primary design of the water cupping field of the Water Cube Olympic Games can be divided into four parts: the supporting frame, the panel unit, the connection between the components and so on. The panel element is designed as a ribbed wooden box filled with extruded plastic board, and the internal structure and material properties are studied in depth. The static load test of the panel element is carried out under many working conditions, and the bearing capacity of the panel element is obtained. The key indexes of stiffness and failure mode are analyzed by Abaqus finite element program. The optimization scheme is proposed, which proves that the proposed panel element has sufficient stiffness and bearing capacity, and can provide an effective support for the ice surface of the curling course. 3. Based on the proposed ice support scheme, An overall field test of the detachable curling field was completed in the Water Cube Pool. The test is divided into six stages, including the measurement of the stiffness, bearing capacity, long-term deformation, frequency, acceleration and other dynamic characteristics of the support frame, the supporting panel and the ice sheet. It is verified that the proposed overall support scheme can meet the requirements of the ice ball match of the Winter Olympics. Using Abaqus finite element program, the overall field test results are numerically simulated. Furthermore, the maximum vertical displacement and the first order natural vibration frequency of the ice supporting structure under the 300kg load of curling players are analyzed. In particular, the maximum vertical displacement and the internal stress level of the ice bearing structure under the pressure load of the large ice-pouring wheel are deeply analyzed.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU31

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