PDF
Full
Outline
The failure of ice sheets caused by various forces applied vertically is an important scenario in the polar exploration and utilization engineering. The characteristics of ice strength has a direct impact on the design and evaluation of the structural strength and safety manipulation of platform structures active in this area. In this paper, relying on the Small Ice Model Basin of China Ship Scientific Research Center (CSSRC SIMB), the columnar saline model ice was made to carry out circular plate center loading tests. During the test, the center of the ice specimen on the evenly-distributed circumferential support was loaded vertically, the force curve of the ice specimen from the initial loading to the flexural failure was recorded by a force measurement system, and the flexure strength was obtained according to the peak force. At the same time, the failure details of the ice specimen were documented by a high-speed video camera, and then the process and mode of ice destruction were analyzed. On this basis, a series of experimental tests were carried out to analyze the influence on the flexural strength of the model ice by varying the loading speed and the ice temperature. The work of this paper provides a feasible method for measuring and analyzing the strength characteristics of the model ice for CSSRC SIMB and establishes a preliminary foundation for the further research of the mechanism of ice loading under the vertical interaction between the structure and the ice sheet.
PDF
75
34
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
