立式埋地玻璃钢圆柱壳的稳定性分析

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (1): 23-28.

立式埋地玻璃钢圆柱壳的稳定性分析

陈建中^{1, 2}, 娄要胜^{1, 2}, 吕泳^{1, 2*}, 张小玉^{1, 2}

1.武汉理工大学理学院,武汉430070;
2.武汉理工大学新材料力学理论与应用湖北省重点实验室,武汉430070

收稿日期:2017-07-03 出版日期:2018-01-20 发布日期:2018-01-20
通讯作者: 吕泳(1982-),男,博士,实验师,主要从事功能复合材料的设计研究与材料长期性能分析等方面的研究,lvyonghl@163.com。
作者简介:陈建中(1978-),男,博士,副教授,硕士研究生导师,主要从事复合材料结构及其应用、结构检测技术等方面的研究。
基金资助:
中央高校基本科研业务费专项资金(2016ⅠA006)

ANALYSIS ON THE STABILITY OF VERTICAL BURIED GLASS FIBER REINFORCED PLASTIC CYLINDRICAL SHELL

CHEN Jian-zhong^1,2, LOU Yao-sheng^1,2, LV Yong^1,2*, ZHANG Xiao-yu^1,2

1School of Science, Wuhan University of Technology, Wuhan 430070, China；
2Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics

Received:2017-07-03 Online:2018-01-20 Published:2018-01-20

摘要/Abstract

摘要： 基于工程实际,采用承压不承拉的杆单元模型解决埋地结构与周围土体的相互作用问题,推导出杆单元与土体之间材料参数表达式,建立有限元计算模型,实现立式埋地玻璃钢圆柱壳结构稳定性有限元分析。通过与传统公式计算结果比较,得出传统稳定性计算公式不能用于计算立式埋地结构。参数对结构稳定性的影响结果表明:增加结构的厚度、弹性模量以及周围土弹性模量可提高稳定性,其中厚度的影响更为显著;结构稳定性随壳体长度的增加而降低。在工程应用中可采用加筋结构减小计算长度以及选择合适的回填材料和回填方式来提高土的弹性模量的方法,有效提高稳定安全性,对经济性影响较小。

关键词: 玻璃钢, 立式埋地圆柱壳, 稳定性, 有限元

Abstract: In order to determine the stability of vertical buried FRP cylindrical shells, several traditional formulas for stability calculation are introduced. Then, based on engineering practice, and by using the rod model without pressure bearing to solve the problem between the buried structure and the surrounding soil, the material parameter expression between the rod element and the soil is deduced, and the basic finite element calculation model is established. Compared with the traditional formula, the traditional stability formula can not be used to calculate the vertical buried structure. The influence of parameters on structural stability shows that the thickness of the structure, the elastic modulus and the elastic modulus of the surrounding soil can improve the stability and the influence of the thickness is more obvious. The structural stability decreases with the increase of shell length.In engineering application, by using the reinforcement structure to reduce the calculation length and choose the appropriate back-fill material and back-fill method to improve the elastic modulus of soil, the stability and security can effectively be improved, and has less impact on economy.

Key words: glass fiber reinforced plastic, vertical buried cylindrical shell, stability, finite element

中图分类号:

TB332

陈建中, 娄要胜, 吕泳, 张小玉. 立式埋地玻璃钢圆柱壳的稳定性分析[J]. 玻璃钢/复合材料, 2018, 0(1): 23-28.

CHEN Jian-zhong, LOU Yao-sheng, LV Yong, ZHANG Xiao-yu. ANALYSIS ON THE STABILITY OF VERTICAL BURIED GLASS FIBER REINFORCED PLASTIC CYLINDRICAL SHELL[J]. Fiber Reinforced Plastics/Composites, 2018, 0(1): 23-28.

参考文献

[1] 贾新, 袁勇, 李焯芬. 新型玻璃纤维增强塑料砂浆锚杆的黏结性能试验研究[J]. 岩石力学与工程学报, 2006(10): 2108-2114.
[2] 薛忠民. 中国玻璃钢/复合材料发展回顾与展望[J]. 玻璃钢/复合材料, 2015(1): 5-12.
[3] 彭志豪, 陈海燕, 肖仕宝. 沉入式大直径薄壁圆筒护岸结构稳定性分析[J]. 水运工程, 2010(8): 39-43.
[4] 陈纯山. 对CECS190: 2005规程有关条款的看法与建议[J]. 中国农村水利水电, 2008(7): 88-89.
[5] 宋奇叵, 李琛彧. 简述埋地玻璃钢夹砂管道工程结构设计[J]. 特种结构, 2007(3): 37-41.
[6] 朱永安, 卢保红. 纤维缠绕玻璃钢夹砂管在轴向压力下的稳定性分析[J]. 建筑科学, 2008(3): 24-26.
[7] 肖俊, 李卓球, 陈建中. 基于斯潘格勒理论的埋地柔性管道有限元分析[J]. 华中科技大学学报(自然科学版), 2014(1): 89-92.
[8] 时强, 王新武, 张小玉, 等. 埋地复合材料泵站井受力分析研究[J]. 玻璃钢/复合材料, 2016(11): 85-89, 45.
[9] ASME boiler＆pressure vessel code VI division 1, Ahemative rules-rules for construction of pressure vessels 2010[S].
[10] 李卓球, 岳红军. 玻璃钢管道与容器[M]. 北京: 科学出版社,1990,12(6): 294-302.
[11] 郝婷玥, 陈贵清. 管道与土的相互作用[J]. 水利科技与经济, 2007, 13(4): 237-239.
[12] Rotter, J. Michael. The new framework for shell buckling design and the european shell buckling recommendations fifth edition[J]. Journal of Pressure Vessel Technology, 2010, 133(1): 011203.
[13] EN 1993-1-6: 2007,Eurocode 3: Part 1.6: Strength and stability of shell structures[S].
[14] 杨建明, 时强, 潘多军, 等. 玻璃钢夹砂管道穿越国道和高速公路的工程实践[J]. 玻璃钢/复合材料, 2014(8): 72-76.
[15] 刘文涛, 陈冰冰, 高增梁. ANSYS特征值法在计算外压圆筒弹性失稳中的应用讨论[J]. 压力容器, 2012(5): 20-25, 41.