Blast response of beams built with high-strength concrete and high-strength ASTM A1035 bars

被引：24

作者：

Li, Yang ^{[1
]}

Aoude, Hassan ^{[1
]}

机构：

[1] Univ Ottawa, Dept Civil Engn, Ottawa, ON, Canada

来源：

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING | 2019年 / 130卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Blast; High-strength reinforcement; HSC; Shock-tube; Beams; DYNAMIC-BEHAVIOR; IMPACT RESPONSE; LOADING RATE; PERFORMANCE; SHEAR; SLABS;

D O I：

10.1016/j.ijimpeng.2019.02.007

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The work reported in this paper is aimed towards better understanding the behavior of reinforced concrete flexural members built with high-strength reinforcement (HSR) under blast loading. As part of the study, a series of high-strength concrete (HSC) beams built with ASTM A1035 Grade 690 MPa bars are tested under simulated blast loads using a shock-tube. Parameters investigated include the effect of steel type (Grade 690 MPa vs. 400 MPa), concrete strength (100 MPa vs. 50 MPa) and reinforcement ratio (rho = 1%-2.2%). The effect of loading rate is investigated by testing a companion set of beams under slowly applied (quasi-static) loading. The results show that use of high-strength steel in HSC beams results in increased blast capacity and improved control of displacements at equivalent blasts. The use of high-strength concrete is also found to be better suited for beams reinforced with high-strength bars. The results further demonstrate the importance of ensuring beams designed with high-strength bars are under-reinforced and provided with sufficient shear reinforcement. The blast response of the beams is predicted analytically using dynamic analysis.

引用

页码：41 / 67

页数：27

共 74 条

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