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(同濟(jì)大學(xué)建筑設(shè)計(jì)研究院 (集團(tuán)) 有限公司, 上海 200092)
摘要: 上音歌劇院結(jié)構(gòu)采用獨(dú)特的階梯狀隔振層布置方式,通過位于三個不同標(biāo)高處的 124 個鋼彈簧隔振支座將核心功能區(qū)(包括觀眾廳、樂池和舞臺)與地下室結(jié)構(gòu)彈性連接,大幅降低結(jié)構(gòu)的豎向頻率,遠(yuǎn)離地鐵振動的主要頻率區(qū)段。 地鐵振動控制中采用頻域分析和時(shí)域分析兩種方法,對工程隔振效果進(jìn)行了評價(jià)與比較。 結(jié)果表明,隔振系統(tǒng)在地鐵振動的主要頻率區(qū)段具有 20dB 以上的減振效果,地鐵過車時(shí)引起的鉛垂向加速度峰值將減?。梗埃ヒ陨稀?上音歌劇院投入使用前,現(xiàn)場振動實(shí)測結(jié)果表明,在地鐵通過時(shí),北側(cè)舞臺最不利部位經(jīng)隔振后的最大鉛垂向振級僅為 48?? 8dB,實(shí)際振級減小約 20dB,驗(yàn)證了隔振系統(tǒng)的有效性,核心建筑功能得到了充分的保障。
關(guān)鍵詞: 上音歌劇院; 地鐵振動; 隔振系統(tǒng); 鋼彈簧隔振支座; 振級
中圖分類號:TU318,U211. 3,X827 文獻(xiàn)標(biāo)志碼:A 文章編號:1002?848X(2022)12?0086?09
DOI:10. 19701 / j. jzjg. LS210168
Metro vibration control for Shangyin Opera House
JU Wei, WU Honglei, ZHOU You
(Tongji Architectural Design (Group) Co., Ltd., Shanghai 200092, China)
Abstract: A creative approach of terraced vibration isolation system was utilized in the structure of Shangyin opera house.The core functional part, including the auditorium, orchestra pit and stage, was connected elastically with the basementstructure by 124 steel spring isolation bearings in three different levels. The vertical frequency was greatly reduced and farless than the main frequency range of the metro vibration. For the metro vibration control, frequency domain analysis andtime domain analysis were conducted and the vibration control effect of the system was evaluated and compared. The resultsshow that the vibration isolation system has a vibration reduction of more than 20dB in the main frequency range of themetro vibration, and the peak vertical acceleration caused by metro train passing will be reduced by no less than 90%.Before the opening of the Shangyin Opera House, on?site vibration test results indicate that the maximum vertical vibrationlevel of the north stage under the worst condition is only 48?? 8dB, with approximate 20dB reduced by the isolation systemduring the metro train passing. Therefore, the effectiveness of the isolation system is verified, and the core architecturalfunction of the building is fully guaranteed.
Keywords: Shangyin Opera House; metro vibration; vibration isolation system; steel spring isolation bearing;vibration level
第一作者:居煒,碩士,高級工程師,一級注冊結(jié)構(gòu)工程師,主要從事建筑結(jié)構(gòu)設(shè)計(jì),Email:32jw@ tjad.cn。[引用本文] 居煒,吳宏磊,周游. 上音歌劇院地鐵振動控制[ J]. 建筑結(jié)構(gòu),2022,52( 12):86?94. JU Wei,WU Honglei,ZHOU You. Metro vibration control for Shangyin Opera House[J]. Building Structure,2022,52(12):86?94.
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