不同波纹钢-混凝土板复合结构水下抗爆机理及损伤等级预测

曹克磊; 付乔峰; 赵瑜

doi:10.11883/bzycj-2023-0366

不同波纹钢-混凝土板复合结构水下抗爆机理及损伤等级预测

doi: 10.11883/bzycj-2023-0366

曹克磊^1,,
付乔峰²,
赵瑜^{1, 2}

1.
华北水利水电大学水利学院，河南郑州 450046
2.
华北水利水电大学土木与交通学院，河南郑州 450045

基金项目: 国家自然科学基金（51979188）；河南省高等学校重点科研项目(24A570002)；天津大学水利工程智能建设与运维全国重点实验室开放基金（HESS-2230）；华北水利水电大学博士引进人才科研启动基金（40921）

详细信息

作者简介:
曹克磊（1990－　），男，博士，讲师，caokelei456@163.com

中图分类号: 0383
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- 被引次数: 0
出版历程
- 收稿日期: 2023-10-09
- 修回日期: 2024-01-26
- 网络出版日期: 2024-03-06

Underwater anti-explosion mechanism and damage grade prediction of different corrugated steel-concrete slab composite structures

CAO Kelei^1
,,
FU Qiaofeng²,
ZHAO Yu^{1, 2}

1.
College of Water Conservancy, North China University of Water Resources and Hydropower, Zhengzhou 450046, Henan, China
2.
College of Civil Engineering and Transportation, North China University of Water Resources and Electric Power, Zhengzhou 450045, Henan, China

摘要

摘要: 为探究不同波纹钢-混凝土板复合结构的水下抗爆机理，采用光滑粒子流体动力学与有限单元（FEM-SPH）耦合方法模拟混凝土板在水下接触爆炸下的损伤过程，并与试验结果对比，以验证数值方法的有效性；采用FEM-SPH方法探究不同防护方案下墙面板毁伤过程及失效模式，揭示其水下防爆机理，并构建出墙面板损伤等级预测曲线。研究结果表明：模拟结果与试验结果较为吻合，验证了模拟方法的有效性；在含12 mm厚波纹钢的复合结构（T-12）、含75°夹角的波纹钢复合结构（A-75）和含厚70 mm波纹钢的复合结构（WH-70）三种防护方案下，墙面板的毁伤范围较未加固墙面板最大降幅分别为83.0%、81.6%和82.5%；预测曲线可以直观评估出炸药量和复合结构中波纹钢波高变化对墙面板损伤等级的影响。
- 波纹钢-混凝土板复合结构 /
- 毁伤演化特征 /
- 水下抗爆机理 /
- 损伤等级预测
Abstract: In order to explore the underwater anti-explosion mechanism of different corrugated steel-concrete slab composite structures, the damage process of concrete slab under underwater contact explosion was simulated by smoothed particle hydrodynamics and finite element method (FEM-SPH), and the validity of the numerical method was verified by comparing with the experimental results. The FEM-SPH method was used to explore the damage process and failure mode of the wall panel under different protection schemes, to reveal the underwater explosion-proof mechanism, and to construct the prediction curve of the damage grade of the wall panel. The results show that the simulation results are in good agreement with the experimental results, which verifies the effectiveness of the simulation method. Under different protection schemes, the damage range of the wall panel with 12 mm thick corrugated steel composite structure (T-12), 75^o angle corrugated steel composite structure (A-75) and 70 mm corrugated steel composite structure (WH-70) is 83%, 81.6% and 82.5% lower than that of the unreinforced wall panel, respectively. In the composite structure, the explosion shock wave propagates to the corrugated steel in the form of incident wave and then propagates in the structure in the form of transmitted wave and reflected wave. When the transmitted wave reaches the lower surface of the corrugated steel, part of the shock wave will continue to propagate to the wall panel, while the remaining shock wave is reflected to form reflected longitudinal wave and reflected transverse wave, which further attenuates the transmitted shock wave acting on the wall panel to achieve the effect of wave clipping and energy absorption. The prediction curve can directly evaluate the influence of explosive amount and wave height change of corrugated steel in composite structure on the damage grade of wall panel.
- corrugated steel-concrete slab composite structure /
- damage evolution characteristics /
- underwater anti-explosion mechanism /
- damage level prediction

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图 1 不同数值算法基本原理

Figure 1. Basic principles of different numerical algorithms

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图 2 水下接触爆炸试验模型尺寸及钢筋布置方式

Figure 2. Underwater contact explosion test model size and reinforcement arrangement

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图 3 数值模型

Figure 3. Numerical model

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图 4 试验结果与数值结果对比

Figure 4. Comparison of experimental results and numerical results

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图 5 数值模型（单位：mm）

Figure 5. Numerical model (unit: mm)

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图 6 混凝土板钢筋布置图

Figure 6. Reinforcement layout of concrete slab

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图 7 波纹钢截面（单位：mm）

Figure 7. Corrugated steel sectio (unit: mm)

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图 8 整体结构的毁伤过程

Figure 8. Damage process of the integral structure

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图 9 波纹钢的毁伤过程

Figure 9. Damage process of the corrugated metal

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图 10 墙面板的毁伤过程

Figure 10. Damage process of the wall shingle

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图 11 结构毁伤机理

Figure 11. Damage mechanism of structure

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图 12 未加固墙面板毁伤模式

Figure 12. Damage mode of unreinforced wall panel

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图 13 波纹钢厚度对整体结构毁伤模式的影响

Figure 13. Damage modes of the intergral structure due to different thicknesses of the corrugated steel

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图 14 波纹钢厚度对波纹钢毁伤模式的影响

Figure 14. Damage modes of the corrugated steel due to different thicknesses of the corrugated steel

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图 15 波纹钢厚度对墙面板毁伤模式的影响

Figure 15. Damage modes of the wall shingle due to different thicknesses of the corrugated steel

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图 16 波纹钢夹角对整体结构毁伤模式的影响

Figure 16. Damage modes of the integral structure due to different angles of the corrugated steel

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图 17 波纹钢夹角对波纹钢毁伤模式的影响

Figure 17. Damage modes of the corrugated steel due to different angles of the corrugated steel

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图 18 波纹钢夹角对墙面板毁伤模式的影响

Figure 18. Damage modes of the wall shingle due to different angles of the corrugated steel

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图 19 波纹钢波高对墙面板毁伤模式的影响

Figure 19. Damage modes of the intergral structure due to different wave heights of the corrugated steel

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图 20 波纹钢波高对波纹钢毁伤模式的影响

Figure 20. Damage modes of the corrugated steel due to different wave heights of the corrugated steel

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图 21 波纹钢波高对墙面板毁伤模式的影响

Figure 21. Damage modes of the wall shingle due to different wave heights of the corrugated steel

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图 22 无加固结构的钢筋轴力分布

Figure 22. Axial force distribution of steel bar without reinforced structure

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图 23 波纹钢厚度对钢筋轴力分布的影响

Figure 23. Axial force distribution of steel bar due to different thicknesses of the corrugated steel

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图 24 波纹钢夹角对钢筋轴力分布的影响

Figure 24. Axial force distribution of steel bar due to different angles of the corrugated steel

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图 25 波纹钢波高对钢筋轴力分布的影响

Figure 25. Axial force distribution of steel bar due to different wave heights of the corrugated steel

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图 26 破坏类型

Figure 26. Damage types

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图 27 波纹钢厚度对墙面板破坏深度的影响

Figure 27. Damage depths of wall panel due to different thicknesses

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图 28 波纹钢夹角对墙面板破坏深度的影响

Figure 28. Damage depths of wall panel due to different angles

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图 29 波纹钢波高对墙面板破坏深度的影响

Figure 29. Damage depths of wall panel due to different wave heights

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图 30 墙面板损伤等级与波纹钢厚度关系预测曲线

Figure 30. Prediction curve of the relationship between the damage level of wall panel and the thickness of corrugated steel

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图 31 墙面板损伤等级与波纹钢夹角关系预测曲线

Figure 31. Prediction curve of relationship between damage grade of wall panel and angle of corrugated steel

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图 32 墙面板损伤等级与波纹钢波高关系预测曲线

Figure 32. Prediction curve of relationship between damage grade of wall panel and wave height of corrugated steel

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表 1 炸药材料参数

Table 1. Material parameters of the explosive

ρ₁/（g·cm⁻³）	A₁/MPa	B₁/MPa	R₁	R₂	ω₁
1.63	373.77	3.75	4.15	0.9	0.35

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表 2 水体材料参数

Table 2. Material parameters of water

ρ₂/(g·cm⁻³)	c/(m·s⁻¹)	S₁	S₂	S₃	γ₀	a
1.0	2417	1.41	0	0	1.0	0

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表 3 钢筋材料参数

Table 3. Material parameters corrugated steel

ρ₃/(g·cm⁻³)	A₂/GPa	B₂/GPa	N	C	m	T_m
7.85	0.345	0.336	0.42	0.026	1.4	1720
注：A₂、B₂、N为参考应变率$ {\dot{\varepsilon }}_{0} $和参考温度$ {T}_{\mathrm{r}\mathrm{o}\mathrm{o}\mathrm{m}} $下的材料初始屈服应力、应变硬化模量和硬化指数，C为材料应变率强化参数，m为材料热软化参数，$ {T}_{\mathrm{r}\mathrm{o}\mathrm{o}\mathrm{m}} $为室温，$ {T}_{\mathrm{m}\mathrm{e}\mathrm{l}\mathrm{t}} $为熔点。

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表 4 墙面板背爆面剥落区

Table 4. Spalling area of back surface of wall panel

方案	最大直径/mm	最大宽度/mm	方案	最大直径/mm	最大宽度/mm	方案	最大直径/mm	最大宽度/mm
T-3	221	180	A-30	285	154	WH-10	281	251
T-6	210	151	A-45	221	180	WH-30	241	220
T-9	191	130	A-60	211	131	WH-50	221	180
T-12	180	100	A-75	185	105	WH-70	181	105
注：未加固结构剥落区的最大直径和最大宽度分别为330和320 mm。

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