Safety evaluation method of self-supporting reticulated shell roof of hazardous chemical storage tanks

doi:10.16265/j.cnki.issn1003-3033.2026.06.1653

Abstract

Abstract:

To evaluate whether the self-supporting reticulated shell roof of a hazardous chemical storage tank can meet safe service requirements, the load-bearing capacity assessment process for reticulated shell structures was established. By analyzing and evaluating key load-bearing capacity factors such as member strength, single member stability, shell stiffness, and overall stability item by item, corresponding calculation methods and evaluation criteria were provided, thereby proposing a safety assessment method for self-supporting arched roof reticulated shell structures. Taking a single-layer spherical reticulated shell roof structure as an example, a numerical simulation model considering corrosion damage of the storage tank was developed using the proposed method. Linear elastic analysis and nonlinear full-process analysis were conducted under design load conditions. Based on the evaluation criteria, a comprehensive safety assessment of the corroded and thinned reticulated shell structure was performed. The results show that the multi-dimensional hierarchical evaluation method established in this paper can realize the item-by-item quantitative decomposition and accurate analysis of member strength, single-member stability, structural stiffness and overall stability of the in-service storage tank reticulated shell roof. It can effectively quantify the weakening effect of corrosion thinning damage on the load-bearing reserve, deformation control capacity and anti-buckling safety margin of the reticulated shell.

Key words: hazardous chemical storage tanks, self-supporting reticulated shell roof, safety evaluation, reticulated shell structure, load-bearing performance

CLC Number:

Du Liang, Han Lizhe, Wang Dapeng, Cao Kai, Duan Yuanzhe, Yu Shuangkai. Safety evaluation method of self-supporting reticulated shell roof of hazardous chemical storage tanks[J]. China Safety Science Journal, 2026, 36(6): 33-39.

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References 16

[1]	刘健. 应用于大型储罐的铝合金单层球面网壳稳定性能研究[D]. 杭州: 浙江大学, 2022.
	Liu Jian. Study on stability behavior of aluminum alloy single-layer spherical reticulated shells applied to large storage tanks[D]. Hangzhou: Zhejiang University, 2022.
[2]	GB/T 50341—2014 立式圆筒形钢制焊接油罐设计规范[S].
	GB/T 50341-2014 Code for design of vertical cylindrical welded steel oil tanks[S].
[3]	刘枫, 钱基宏, 宋涛, 等. 某工程毂节点网壳坍塌事故原因分析[J]. 空间结构, 2007 (4):38-42.
	Liu Feng, Qian Jihong, Song Tao, et al. Analysis of reasons for the collapse of a hub joint steel shell[J]. Space Structure, 2007 (4):38-42.
[4]	张明, 周德红, 刘洋. 基于CFD的LNG储罐瞬时大风环境数值模拟研究[J]. 中国安全生产科学技术, 2024, 20(1):121-126.
	Zhang Ming, Zhou Dehong, Liu Yang. Numerical simulation research of instantaneous gale environment on LNG storage tank based on CFD[J]. Journal of Safety Science and Technology, 2024, 20(1):121-126.
[5]	俞进, 尤学刚, 张克政. 基于超单元的LNG储罐吊顶地震响应安全分析[J]. 中国安全生产科学技术, 2023, 19(增刊2):64-68.
	Yu Jin, You Xuegang, Zhang Kezheng. Analysis on seismic response safety for suspended ceiling of LNG tank based on super-element[J]. Journal of Safety Science and Technology, 2023, 19(S2): 64-68.
[6]	李玉坤, 李龙杰, 刘德田, 等. 大直径拱顶储罐网壳强度计算与结构改进[J]. 油气储运, 2014, 33(4):422-428.
	Li Yukun, Li Longjie, Liu Detian, et al. Strength calculation and structure improvement of reticulated shell of large-diameter dome roof tank[J]. Oil and Gas Storage and Transportation, 2014, 33(4): 422-428.
[7]	齐盛, 帅健, 顾强. 基于贝叶斯和极值分析的原油储罐底板剩余寿命预测[J]. 中国安全生产科学技术, 2021, 17(增刊1):67-73.
	Qi Sheng, Shuai Jian, Gu Qiang. Remaining life prediction of crude oil storage tanks bottom plate based on Bayesian and extreme value analysis[J]. Journal of Safety Science and Technology, 2021, 17(S1): 67-73.
[8]	Hiyama Y, Takashima H, Iijima T, et al. Buckling behaviour of aluminum ball jointed single layered reticular domes[J]. International Journal of Space Structures, 2000, 15(2):81-94. doi: 10.1260/0266351001494991
[9]	王新颖, 胡磊磊, 刘岚, 等. 基于改进K-means和CNN的储罐罐底点蚀诊断模型[J]. 中国安全生产科学技术, 2022, 18(8):196-201.
	Wang Xinying, Hu Leilei, Liu Lan, et al. Diagnosis model of pitting corrosion at bottom of storage tank based on improved K-means and CNN[J]. Journal of Safety Science and Technology, 2022, 18(8): 196-201.
[10]	陈超, 陈行, 莫丽, 等. 储油罐风-火耦合热屈曲行为与防控技术数值模拟研究[J]. 中国安全生产科学技术, 2023, 19(10):124-131.
	Chen Chao, Chen Xing, Mo Li, et al. Numerical simulation study on thermal buckling behavior of oil storage tanks exposed to wind-fire coupling environment and prevention and control measures[J]. Journal of Safety Science and Technology, 2023, 19(10): 124-131.
[11]	Wu Kaidong, Wadde A M, Gardner L. Interactive buckling in prestressed stayed beam-columns[J]. International Journal of Mechanical Sciences, 2020,174:DOI: 10.1016/j.ijmecsci.2020.105479.
[12]	GB/T 700—2006 碳素结构钢[S].
	GB/T 700-2006 Carbon structural steels[S].
[13]	GB/T 1591—2018 低合金高强度结构钢[S].
	GB/T 1591-2018 High strength low alloy structural steels[S].
[14]	JGJ 7—2010 空间网格结构技术规程[S].
	JGJ 7-2010 Technical specification for space frame structures[S].
[15]	王十, 都亮, 赵彦修. 常压储罐底板泄漏声发射检测方法及应用[J]. 中国安全科学学报, 2022, 32(增刊1):157-164.
	Wang Shi, Du Liang, Zhao Yanxiu. Acoustic emission detection method and application of atmospheric tank floor leakage[J]. China Safety Science Journal, 2022, 32(S1): 157-164. doi: 10.16265/j.cnki.issn1003-3033.2022.S1.0199
[16]	GB 50009—2012 建筑结构荷载规范[S].
	GB 50009-2012 Load code for the design of building structures[S].

项目		值
罐壁参数	直径/mm	52 000
	壁厚/mm	22/20/16/14/12/10/10
	罐高/mm	22,738
	材料	16MnR,Q235-A
罐顶网壳参数	网壳球半径/mm	51 600
	矢高/mm	6,913
	构件材质	Q235-A
	跨度/mm	51 600
	截面规格	I 20
	节点形式	毂节点

测厚位置	超声波测厚值	公称厚度
翼板	8.0/7.7/7.8/8.0/8.0	11.4
腹板	4.8/4.5/3.9/3.8/4.0	7.0

组合名称	载荷组合
载荷组合1	D_L+W+0.4P_e
载荷组合2	max{D_L+(L_r或S₀)+0.4P_e, D_L+P_e+0.4(L_r或S₀)}

构件编号/位置	无支撑长度/mm	最小回转半径/mm	最大长细比	许用压应力值/MPa	压应力计算值/MPa	许用弯曲应力/MPa	弯曲应力计算值/MPa	L/b_a (<13)
6/主弦	3 602.08	21.50	104.72	83.94	84.28	154	37.63	39.58
7/斜撑	5 005.26	21.50	145.51	56.30	34.92	154	21.73	34.38
8/主弦	3 622.74	21.50	105.32	83.16	107.84	154	36.39	39.81
9/斜撑	4 745.49	21.50	137.96	60.03	40.86	154	18.58	32.59
11/斜撑	4 503.76	21.50	130.93	64.17	46.03	154	16.99	30.93
17/斜撑	5 003.95	21.50	145.48	56.32	28.13	154	13.56	34.37