钢管混凝土柱抗爆性能试验研究综述  

Review on Experimental Research on Blast Resistance of Concrete Filled Steel Tubular Columns

作　　者：刘中辉 匡志平[1] LIU Zhonghui;KUAGN Zhiping(Department of Structural Engineering,Tongji University,Shanghai 200092,China;Zhejiang Industry Polytechnic College,Shaoxing 312069,China)

机构地区：[1]同济大学建筑工程系,上海200092 [2]浙江工业职业技术学院,绍兴312069

出　　处：《结构工程师》2024年第4期187-194,共8页Structural Engineers

摘　　要：当今世界恐怖爆炸袭击事件频发,很多爆炸袭击是针对建筑物和桥梁的,柱作为建筑物和桥梁的重要构件常成为袭击的目标。钢管混凝土柱在常规荷载作用下具有很多优良的结构工作性能,在工程实践中得到了越来越广泛的应用,为了探究其抗爆性能,很多学者开展了大量的试验研究工作。对这些试验研究工作进行了归纳总结,发现炸药距离柱表面的比例距离和炸药质量是决定钢管混凝土柱破坏形态的主要因素,根据比例距离和炸药质量的不同,钢管混凝土柱将会出现三种不同的破坏形态:局部凹陷破坏、局部凹陷和整体弯曲破坏、整体弯曲破坏。钢管截面形式、钢管外径与壁厚之比、混凝土强度、轴压比等因素对特定破坏形式下的破坏程度均有一定的影响。此外,受到近距离爆炸荷载作用后,钢管混凝土柱的轴向和抗震残余承载力均有所下降,下降幅度与爆炸损伤程度成正比。在归纳总结已有文献的基础上,给出了钢管混凝土柱抗爆性能试验进一步的研究方向。Terrorist bombing attacks are frequent in the world today,with many of them targeting buildings and bridges.Columns,as important components of buildings and bridges,often become targets of attacks.Concrete filled steel tube columns have many excellent structural performances under conventional loads and have been increasingly widely used in engineering practice.In order to explore their anti-explosion performance,many scholars have conducted a lot of experimental research work.This paper summarizes these experimental research works and finds that the scaled distance between the explosive and the surface of the column and the quality of the explosive are the main factors determining the failure mode of the concrete filled steel tube columns.According to the differences in scaled distance and explosive quality,concrete filled steel tube columns will exhibit three different failure modes:local crater failure,local crater and overall bending failure,and overall bending failure.Factors such as the cross-sectional form of steel tubes,the ratio of outer diameter to wall thickness,concrete strength,and axial compression ratio all have a certain impact on the degree of failure under specific failure modes.In addition,after being subjected to near-range detonation,the axial and seismic residual bearing capacity of the concrete filled steel tube columns decreased,and the degree of decrease is proportional to the degree of explosion damage.On the basis of summarizing existing literature,this paper provides further research directions for the anti-explosion performance test of concrete filled steel tube columns.

关 键 词：近距离爆炸 钢管混凝土柱 试验研究 残余承载力 

分 类 号：TU398.9[建筑科学—结构工程] TU352.13