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楊學(xué)林¹，周平槐¹，徐燕青²

（1 浙江省建筑設(shè)計(jì)研究院， 杭州 310006； 2 浙江中設(shè)工程設(shè)計(jì)有限公司，杭州 310007）

 

［摘要］蘭州紅樓時(shí)代廣場屋頂結(jié)構(gòu)標(biāo)高245.60m，是目前西北地區(qū)第一高樓，地處蘭州市中心，設(shè)防烈度為8度（0.20g），地震安全性評價(jià)的設(shè)防烈度接近8度（0.30g）。項(xiàng)目除高度超限外，還存在其他多項(xiàng)超限內(nèi)容，如利用避難層設(shè)置2道加強(qiáng)層，裙樓局部利用轉(zhuǎn)換桁架實(shí)現(xiàn)抽柱轉(zhuǎn)換，塔樓頂部和裙樓入口處形成斜切面，核心筒剪力墻從層55開始內(nèi)收等。進(jìn)行了基于性能的抗震設(shè)計(jì)，根據(jù)構(gòu)件的重要性分別提出不同的性能設(shè)計(jì)目標(biāo)，并采取相應(yīng)抗震加強(qiáng)措施。通過不同程序分別進(jìn)行了中震彈性和不屈服計(jì)算、以及大震彈塑性分析。分析表明，所提出的各種性能化目標(biāo)均得到實(shí)現(xiàn)，性能化抗震設(shè)計(jì)和采用的抗震措施能滿足結(jié)構(gòu)“小震不壞、中震可修、大震不倒”的抗震設(shè)防要求。

［關(guān)鍵詞］高層建筑；性能設(shè)計(jì)；避難層；轉(zhuǎn)換桁架；超限內(nèi)容；伸臂桁架；腰桁架；性能目標(biāo)；大震；彈塑性分析

中圖分類號：TU 973-32文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2012)08-0050-06

 

Yang Xuelin¹, Zhou Pinghuai¹, Xu Yanqing²

(1 Zhejiang Province Institute of Architectural Design and Research, Hangzhou 310006, China; 2 Zhejiang Zhongshe Engineering Design Co., Ltd., Hangzhou 310007, China)

 

Abstract: Honglou Times Square is 245.6.00m high to the structure roof, which locates in the center of Lanzhou CityIt is the highest building in the Northwest ChinaThe seismic fortification intensity is 8 degree (0.20g) according to Code for seismic design of building while 8 degree (0.30g) according to the seismic safety evaluation report-There are many codeexceeding aspects except the height, such as two strengthened-stories with outriggers and belt trusses are installed in the refuge stories, the transfer truss is set in the podium for removed columns, the clip planes exist in entrance of the podium and at the top of the tower, and the core concrete walls are inclined inside from the 55th story-Using performance-based design method, the performance objectives of the important components are proposed-Moreover some structural seismic strengthening measures are adopted in response to these code-exceeding aspects-The elastic and non-yielding analysis under medium earthquake and the dynamic elastic-plastic analysis under strong earthquake were executed in design-It shows that all performance objectives and the three-level seismic-resistant objective are satisfied for the building

Keywords: high-rise building; refuge story; transfer truss; code-exceeding aspect; outrigger; belt truss; performance objective; dynamic elastic-plastic analysis; strong earthquake

作者簡介：楊學(xué)林，工學(xué)博士，教授級高級工程師，院總工程師，Email: yangxuelin@ziad.cn。

 

［1］住房和城鄉(xiāng)建設(shè)部超限高層建筑工程抗震設(shè)防專項(xiàng)審查技術(shù)要點(diǎn)［S］. 2010

［2］JGJ 3—2002高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程［S］.北京:中國建筑工業(yè)出版社,2002

［3］GB 50011—2010建筑抗震設(shè)計(jì)規(guī)范［S］.北京:中國建筑工業(yè)出版社,2010