强动载荷下钢筋混凝土结构计算模型简评

高飞; 王明洋; 张先锋; 何勇; 李猛深

doi:10.11883/1001-1455(2017)02-0365-12

强动载荷下钢筋混凝土结构计算模型简评

doi: 10.11883/1001-1455(2017)02-0365-12

高飞¹,
王明洋^{1, 2, ,},
张先锋¹,
何勇¹,
李猛深²

1.
南京理工大学智能弹药技术国防重点学科实验室, 江苏南京 210094
2.
解放军理工大学爆炸冲击防灾减灾国家重点实验室, 江苏南京 210007

基金项目:

国家自然科学基金项目 51508568

国家重点实验室开放基金资助项目 DPMEIKF201405

江苏省重点实验室开放基金项目 3092014012200401

详细信息

作者简介:
高飞(1990—)，男，博士研究生

通讯作者:
王明洋，wmyrf@163.com

中图分类号: O385
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- 被引次数: 0
出版历程
- 收稿日期: 2015-05-20
- 修回日期: 2015-09-18
- 刊出日期: 2017-03-25

A comment on the calculation models for reinforced concrete under intense dynamic loading

1.
Ministerial Key Laboratory of ZNDY, Nanjing University of Science and Technology, Nanjing 210094, Jiangsu, China
2.
State Key Laboratory for Disaster Prevention & Mitigation of Explosion & Impact, PLA University of Science and Technology, Nanjing 210007, Jiangsu, China

摘要

摘要: 针对侵彻、爆炸等强动载作用下混凝土类结构计算中涉及的状态方程、变形破坏弹塑性本构关系与强度准则等关键问题，根据混凝土多组分特征，简述考虑介质中孔隙压缩的状态模型及弹塑性变形破坏中动态损伤演化模型，并在计算实验方法的基础上，给出需要进一步研究的建议。
- 本构模型 /
- 孔隙演化 /
- 钢筋混凝土 /
- 强动载
Abstract: Based on several key issues of the elastic-plastic constitutive model, the equation of state and strength criterion, and the calculation of the strength of concrete under blast and impact loading were reviewed. Concrete being viewed as a binary material composed of matrix and pores, a model including the pore compaction and dynamic damage evolution in elastic-plastic deformation and failure were introduced. On the basis of a mathematical-experimental method, some conclusions and proposals for further reseach were made at the end of the paper.
- constitutive model /
- porosity evolution /
- reinforced concrete /
- intense dynamic loading

HTML全文

图 1 混凝土的孔隙演化等效模型

Figure 1. A spherical model of porous concrete

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图 2 初始孔隙率为α₀时材料的压力曲线

Figure 2. Compression path in material with initial distention α₀

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图 3 钢筋混凝土结构示意图^[20-21]

Figure 3. Sketch of reinforced concrete^[20-21]

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图 4 钢弹以370 m/s速度冲击混凝土板实验与数值模拟结果^[13]

Figure 4. Interaction between a model projectile and concrete plates at initial impact velocity of 370 m/s^[13]

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图 5 弹体在混凝土靶中侵深与初速之间的关系^[14]

Figure 5. Relation between the penetration depth and the initial impact velocity^[14]

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图 6 平头弹穿透靶的数值模拟^[20]

Figure 6. Simulation of the penetration process^[20]

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图 7 模型弹侵彻钢筋/混凝土间隔靶背面视图^[47]

Figure 7. Rear view of steel-concrete plates after the impact with a projectile^[47]

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图 8 模型弹对钢筋/混凝土间隔靶侵彻过程^[47]

Figure 8. Interaction between a model projectile and steel-reinforced plates^[47]

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表 1 不同时刻靶中P/d比较^[20]

Table 1. Comparison of P/d at different times^[20]

t	P/d
t	钢筋混凝土靶	混凝土靶
0.2	0.17	0.17
0.5	0.39	0.42
1.8	1.16	1.25
3.5	1.84	1.98
4.3	-	2.30
4.5	2.14	-
5.2	2.34	-

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