Spherical cavity-expansion model for penetration of reinforced-concrete targets

被引：11
作者：
Deng, Y. J. [1 ,2 ,3 ]
Song, W. J. [4 ]
Chen, X. W. [5 ,6 ]
机构：
[1] China Acad Engn Phys, Inst Syst Engn, POB 919-416, Mianyang 621999, Sichuan, Peoples R China
[2] Shock & Vibrat Engn Mat & Struct Key Lab Sichuan, Mianyang 621000, Sichuan, Peoples R China
[3] Southwest Univ Sci & Technol, Dept Civil Engn & Architecture, Mianyang 621000, Sichuan, Peoples R China
[4] Peking Univ, Coll Engn, Dept Mech & Engn Sci, Beijing 100871, Peoples R China
[5] Beijing Inst Technol, Adv Res Inst Multidisciplinary Sci, Beijing 100081, Peoples R China
[6] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
来源：
ACTA MECHANICA SINICA | 2019年 / 35卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Dynamic cavity-expansion theory; Reinforced concrete; Penetration resistance; Reinforcement ratio; STABILITY ANALYSES; NORMAL PERFORATION; DEPTH;
D O I：
10.1007/s10409-018-0821-9
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The feature of reinforcing bars is introduced into dynamic cavity-expansion theory. Based on the elastic-plastic response penetration model of plain (i.e., unreinforced) concrete (Forrestal and Tzou, 1997), a dynamic spherical cavity-expansion penetration model for reinforced-concrete targets is developed with consideration of the circumferential restriction effect derived from reinforcing bars in the crushed region. The theoretical solution and simplified calculation formula for the cavity radial stress in incompressible and compressible reinforced concrete are obtained by introducing a reinforcement ratio as the volume fraction of rebars in the concrete target. A damping function is presented to describe the restriction effect of a single layer of reinforcing bars on the surrounding concrete, thus establishing a model to calculate the penetration resistance of multilayer reinforced-concrete targets. Compared with test data for the penetration depth, this model considering the circumferential restriction effect produces better results compared with the existing theory.
引用
收藏
页码：535 / 551
页数：17
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