- 摘 要
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（1 廣東省建筑設(shè)計研究院， 廣州 510010； 2 廣東工業(yè)大學(xué)土木與交通工程學(xué)院， 廣州 510006）
［摘要］交通荷載可引起地下空間結(jié)構(gòu)的低頻振動與人群的不舒適感，對地下空間造成一定的影響。采用鋼彈簧浮置板進行減振是一種較好的方法。以廣州市番禺區(qū)萬博商務(wù)中心核心區(qū)地下空間上方市政道路為工程背景，對鋼彈簧浮置板減振結(jié)構(gòu)設(shè)計進行分析。分析結(jié)果表明，設(shè)置鋼彈簧浮置板可明顯降低地下空間結(jié)構(gòu)主要振動模態(tài)的固有頻率，脫離汽車荷載的特征頻率范圍，汽車荷載下地下空間結(jié)構(gòu)頂板的加速度響應(yīng)明顯降低。鋼彈簧浮置板能夠吸收絕大部分振動能量，減小結(jié)構(gòu)振動響應(yīng)。
［關(guān)鍵詞］地下空間； 鋼彈簧浮置板； 減振
中圖分類號：U121文獻標識碼：A文章編號：1002-848X(2019)14-0102-05
Structural design of vibration isolation for steel spring floating slab above underground space
Chen Wei1, Zou Jinhua2, Huang Longtian1, Chen Haibin1, Yi Wenxiang2
（1 Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, China; 2 School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou 510006, China)
Abstract:Traffic load can cause low-frequency vibration of underground space structure and people′s discomfort, which has a certain impact on underground space. It is a good method to use steel spring floating slab to reduce vibration. Taking the municipal road above the underground space of Wanbo Business Center in Panyu District of Guangzhou as the engineering background, the vibration isolation structure design of steel spring floating slab was analyzed. The study results show that the natural frequencies of the main vibration modes of underground space structures can be significantly reduced by installing steel spring floating slabs, which are separated from the characteristic frequency range of vehicle loads. After installing steel spring floating slabs, the acceleration response of the roof of underground space structures under vehicle loads decreases significantly. The steel spring floating slabs can absorb most of the vibration energy, and reduce structural vibration response.
Keywords:underground space; steel spring floating slab; vibration isolation
*廣東省省級科技計劃項目(2015B090901054)，廣東省交通運輸廳科技項目(科技-2017-02-013)。
作者簡介：陳偉，學(xué)士，教授級高級工程師，Email: 16248750@qq.com。
