CAJ | 학술논문

为了测试房屋结构对爆炸地面振动的响应特征，对房屋结构进行爆炸振动试验。利用希尔伯特-黄变换（Hilbert-Huang Transform）对比分析房屋结构上测到的振动信号与贴近地基的地面振动信号的频谱特征。结果表明：在接近房屋结构固有频率域内，房屋的振动幅度较地面振动有不同程度的放大；放大倍率受到炸药与房屋结构的距离和测试点的高度的影响；在相同高度处，碳纤维加固对水泥砖墙结构的减振效果明显，具有碳纤维加固的墙振动幅度小于相同高度普通墙振动幅度的1/2。
위료측시방옥결구대폭작지면진동적향응특정，대방옥결구진행폭작진동시험。이용희이백특-황변환（Hilbert-Huang Transform）대비분석방옥결구상측도적진동신호여첩근지기적지면진동신호적빈보특정。결과표명：재접근방옥결구고유빈솔역내，방옥적진동폭도교지면진동유불동정도적방대；방대배솔수도작약여방옥결구적거리화측시점적고도적영향；재상동고도처，탄섬유가고대수니전장결구적감진효과명현，구유탄섬유가고적장진동폭도소우상동고도보통장진동폭도적1/2。
To test characteristics of a structural response to blast vibration of ground,detonative tests were conducted on a newly constructed residential structure.By using Hilbert-Huang transformation (HHT),the spectral characteristics of vibrations of the structure were analyzed compared to those on ground surface adjacent to the foundation. It was shown that the vibrating amplitude of the structure is amplified compared with the ground motion in the frequency range close to the natural frequencies of the structure;amplification ratio relates to the distance between the blast hole and the structure,and the monitoring height;with the same height,the vibration of a brick-cement wall reinforced with carbon fiber boards is obviously attenuated,the vibrating amplitude of a wall covered with carbon fiber plates is lower than 1 /2 times of that of a common wall.