摘要
为了对地下结构抗层裂进行有效设计，在考虑多次层裂面对应力波传播规律影响的基础上，应用一维应力波传播理论，给出了混凝土结构中任一点应力历史的一般计算公式。算例表明，与过去未考虑多次层裂面影响的方法相比，利用所提出的公式确定的混凝土应力历史与实际更为相符，可为分析和评估爆炸荷载作用下混凝土结构的局部响应提供更为一般的分析手段。
In order to design effectively on spallation-resistance for underground concrete structures, stress histories within concrete structures must be determined correctly. Considering the influence of spallation planes on stress wave propagation, formulas of stress histories within concrete structures are presented on the basis of one-dimensional stress wave propagation theorem. The numerical example shows that the stress histories within concrete agree well with reality by using the proposed methods, compared with methods which do not consider the influence of spallation planes. This can provide a more common method to analyze and evaluate the local response of concrete structures under blast loads.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A01期4849-4853,共5页
Chinese Journal of Rock Mechanics and Engineering
关键词
混凝土结构
爆炸荷载
拉伸波
层裂
concrete structure
blast loads
tensile wave
spallation
