CAJ | 학술논문

针对建筑结构爆破地震响应研究中材料模型和结构模型过于简化的问题，采用已建立的岩石类材料的正交各向异性动力损伤本构模型，将其编制成动力有限元软件LS—DYNA的用户自定义子程序，模拟计算一个二层两跨典型砌体结构在不同爆破地震波作用下的动力响应．并分析了爆破地震波三要素对建筑结构的损伤及动力响应的影响，结果表明：地震波幅值的增加，可明显加剧结构的损伤，损伤可大幅增加结构应变响应；结构存在一个危险的频率段，并且这个频率段应在结构高阶振动模态对应的频率中；结构的损伤和动力响应还与震动波形有密切关系；当结构受迫震动阶段产生损伤时，爆破地震波持续时间对结构响应影响就很大。
침대건축결구폭파지진향응연구중재료모형화결구모형과우간화적문제，채용이건립적암석류재료적정교각향이성동력손상본구모형，장기편제성동력유한원연건LS—DYNA적용호자정의자정서，모의계산일개이층량과전형체체결구재불동폭파지진파작용하적동력향응．병분석료폭파지진파삼요소대건축결구적손상급동력향응적영향，결과표명：지진파폭치적증가，가명현가극결구적손상，손상가대폭증가결구응변향응；결구존재일개위험적빈솔단，병차저개빈솔단응재결구고계진동모태대응적빈솔중；결구적손상화동력향응환여진동파형유밀절관계；당결구수박진동계단산생손상시，폭파지진파지속시간대결구향응영향취흔대。
According to the problem of oversimplification of material and structural models in researches of blasting seismic response of architectural structures,an existing orthotropic dynamic damage constitutive model was adopted to write users＇ self-defined subroutine of dynamic finite element software LS-DYNA with which the dynamic re- sponse of a two-storey,two-span and representative masonry structure were simulated under the action of different blasting seismic waves, and then, the influence of three main factors of blasting seismic waves on the damage of archi- tectural structures and dynamic response was analyzed. Results showed that the damage of structure would be great- ly enhanced with the increase of amplitude,increasing the strain response of structure remarkably. There exists a dangerous frequency section, which was in the frequencies corresponding to higher order vibration modal of structure. The damage and dynamic response of structure were significantly related with waveform,and if structure damaged during forced vibration phase, the duration time would influence dynamic response remarkably.