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| 1 | 气撑式张弦结构静力试验研究及有限元分析显示文摘基于气撑式张弦结构的受力特点,设计制作2.5 m跨度的纺锤形气撑式张弦结构模型,研究在跨中两点集中荷载作用下结构变形和内力分布规律,考察内气压对结构受力性能的影响。通过对结构极限状态的分析,研究结构的破坏形态及失效机理。利用ANSYS软件构建了纺锤形气撑式张弦结构精细化有限元模型,实现结构从放样态到充气态再到受荷态的全过程数值模拟,并与试验结果进行了对比分析。结果表明:有限元分析与试验结果吻合较好,两种方法获得的结构位移和内力值均比较接近;试验模型在集中荷载达到1.98 kN时达到极限状态,失效模式表现为上弦构件的局部屈曲破坏和气囊端部膜材出现褶皱。 | 曹正罡 范峰 严佳川 张雄迪 陈肖达 | 2012 | 建筑结构学报2012，33，5： | 7 |
| 2 | 纺锤形Tensairity结构基本力学性能研究显示文摘Tensairity结构体系在我国尚未应用。为掌握Tensairity的有限元分析方法和基本力学性能,利用ANSYS软件构建了纺锤形Tensairity结构的精细化有限元模型,实现了结构从初始态到受荷态的全过程分析。与国外学者开展的试验进行数值模拟,结果吻合较好。在此基础上,开展了集中荷载作用下,内气压、构件截面、膜材刚度等参数对Tensairity结构受力性能的影响规律研究。结果显示,Tensairity受力特点是通过上下弦构件间的轴向力偶来抵抗外荷载,实现了结构受力拉压分离的设计思想。提高初始内气压、增大上下弦构件截面和提高跨径比是增加结构整体刚度的有效手段;工程实践中应采取措施保证气肋与上下弦构件的有效连接,避免气肋侧向翻转而导致结构失效;同时应保证气肋的密闭性和内气压稳定性。 | 曹正罡 张雄迪 范峰 孙瑛 | 2011 | 土木工程学报2011，44，1： | 6 |
| 3 | 充气式张弦穹顶结构静力性能与稳定性研究显示文摘基于Tensairity结构概念设计了跨度80 m的充气式张弦穹顶结构,建立了精细化的有限元模型,实现了零状态、初始态和荷载态的全过程数值模拟,分析了结构在不同工况下的静力性能和稳定性。研究表明:该结构体系具有良好的静力性能和稳定性,内压在1~4 kPa范围内即可保证充气气囊对刚性构件的支撑作用;整体结构没有出现明显的弹性失稳问题,导致结构失效的主要原因是构件的材料破坏和膜材的应力松弛;当内压较低时,结构因上层膜面松弛而失效;当内压较高时,结构因刚性上弦大范围进入塑性状态而破坏。自振特性分析表明,该结构的整体刚性较大,但绕中心轴的抗扭刚度较为薄弱。 | 万宗帅 曹正罡 孙瑛 李杰 | 2019 | 建筑结构学报2019，40，2： | 2 |
| 4 | Self-Repairing Membranes for Inflatable Structures Inspired by a Rapid Wound Sealing Process of Climbing Plants显示文摘 | Markus Rampf Olga Speck Thomas Speck Rolf H. Luchsinger | 2011 | Journal of Bionic Engineering2011，8，3： | 2 |
| 5 | 大跨度纺锤形气撑式张弦梁找形分析显示文摘气撑式张弦结构是一种利用预应力建立初始刚度的新型结构体系,为研究结构在初始预应力作用下位形变化对其力学性能的影响,采用改进的逆迭代法对60 m跨度纺锤形气撑式张弦梁进行找形分析,研究了找形对结构初始态下内力分布和荷载态下极限承载力的影响,对比了该结构与桁架、传统张弦梁的力学性能和经济性.结果表明:找形后初始态上弦位形误差只有矢高的0.67%;经找形结构初始态下内力分布较未经找形结构发生明显改变,且荷载态下竖向承载力降低22.24%;气撑式张弦结构刚度较等跨度桁架和传统张弦梁要低,但用钢量要少34.80%.找形分析可有效控制大跨度气撑式张弦梁初始态位形误差,但对其力学性能影响较大. | 曹正罡 冯宝山 | 2016 | 哈尔滨工业大学学报2016，48，6： | 0 |
| 6 | Review of tensairity and its applications in agricultural aviation显示文摘In recent years,the unmanned aerial vehicle(UAV)has undergone rapid development in field of agricultural plant protection;however,the payload and max-endurance are bottlenecks that limit its further development.Tensairity is a new structure consisting of a bag filled with low-pressure gas,an upper rigid rod and a lower flexible cable.It puts tension pressure on the whole structure through internal gas pressure,provides continuous support to the upper rigid rod,and that is to say,the tensairity improves the stability of the structure in some way.And also,tensairity is a self-supporting and self-balancing system,which means it is a simple,lightweight structure with small storage volume,strong bearing capacity,and low engineering cost.It also has the advantages of gasbag and BSS(beam string structure).The main objective of this research was to introduce the theoretical basis of tensairity and then discussed its development and applications.Moreover,the advantages and disadvantages of tensairity were summarized,and development prospects of tensairity in agricultural aviation were presented.At last,it can be concluded that tensairity has potentials in agricultural aviation.If tensairity is applied in agricultural UAVs,it will solve the two major problems of payload and max-endurance better,and help promoting the development of agricultural aviation technology in agricultural aviation administration and application.Also,it will help with meeting the aerial application requirements of high efficiency and maximal environmental protection.This research will provide a reference for improving working efficiency and economic benefits of UAVs in agricultural plant protection. | Zang Ying Gu Xiuyan Zhou Zhiyan Luo Xiwen Zang Yu Qi Xingyuan Liu Wulan Yang Cheng | 2016 | International Journal of Agricultural and Biological Engineering2016，9，3： | 0 |
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