- 摘 要
-
(華東建筑設計研究院有限公司, 上海 200002)
摘要: 消能減震技術的應用是結構改擴建抗震設計的一種新手段. 以上海城市規(guī)劃展示館改擴建項目為例,介紹了帶黏滯阻尼器改擴建高層建筑混合結構設計的關鍵問題,包括地震動參數(shù)新舊對比、原結構的診斷和判定、改建后結構的驗算和改造基本參數(shù)的確定,以及減震方案的選擇、阻尼器選型、參數(shù)、布置方式及構造、附加阻尼比的初步確定、整體結構性能指標以及阻尼器耗能效果. 對減震結構和非減震結構方案的整體指標、抗震性能和經(jīng)濟性指標的對比,說明減震結構方案的優(yōu)越性. 對結構進行了小震、中震、大震作用下的結構非線性時程分析、樓板應力和節(jié)點專項分析,以及采用規(guī)范算法和能量法確定附加有效阻尼比,驗證減震結構達到了預定目標,并總結了改擴建類高層混合結構采用減震加固的有效性和必要性.
關鍵詞: 消能減震技術; 結構加固; 結構改擴建; 黏滯阻尼器
中圖分類號:TU352. 1 文獻標志碼:A 文章編號:1002-848X(2022)09-0125-07
DOI:10. 19701 / j. jzjg. HDY2243
Energy dissipation structural design for reconstruction and expansion project of Shanghai UrbanPlanning Exhibition Hall
YU Xiaoming, ZHOU Jianlong, JIANG Xiaofeng
(East China Architectural Design & Research Institute Co. , Ltd. , Shanghai 200002, China)
Abstract: Energy dissipation technology is a new method of seismic design for structural reconstruction and expansion. Thereconstruction and expansion project of Shanghai Urban Planning Exhibition Hall was taken as an example. The key issuesin the design of the hybrid structure on the high-rise building with viscous dampers were introduced, including comparisonbetween new and old ground motion parameters, diagnosis and determination of original structure, checking calculation ofreconstructed structure, determination of basic parameters of reconstruction, and the selection of damping scheme, typeselection, parameters, layout and structure of damper, preliminary determination of additional damping ratio, overallstructural performance index and energy dissipation effect of damper. The comparison of the overall index, seismicperformance and economic index between the damping structure and the aseismic structure scheme show the superiority ofthe damping structure scheme. The non-linear time history analysis, floor stress and joint special analysis of the structureunder frequent earthquakes, fortification earthquakes and rare earthquakes were carried out, and the effective additionaldamping ratio were caculated through standard algorithm and energy method, the damping structure were verified that hasreached the predetermined goal. And the effectiveness and necessity of seismic reinforcement for reconstruction andexpansion of high-rise hybrid structures were summarized.
Keywords:energy dissipation technology; structure reinforcement; structural reconstruction and expansion; viscous damper
∗上海市青年科技啟明星計劃資助項目(19QB1400600) .
第一作者:郁曉銘,碩士,一級注冊結構工程師,主要從事復雜高層和空間結構設計研究,Email:xiaoming_yu@ ecadi. com.
[引用本文] 郁曉銘,周建龍,江曉峰. 上海城市規(guī)劃展示館改擴建項目減震結構設計[ J] . 建筑結構,2022,52(9) :125-131. YU Xiaoming,ZHOU Jianlong,JIANG Xiaofeng. Energy dissipation structural design for reconstruction andexpansion project of Shanghai Urban Planning Exhibition Hall[ J] . Building Structure,2022,52(9) :125-131.
