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開合屋蓋結(jié)構(gòu)設(shè)計荷載取值研究
范重, 王義華, 欒海強, 楊蘇, 胡純煬
摘 要

[摘要]開合屋蓋是一種較為新穎的結(jié)構(gòu)形式,國內(nèi)外尚無相應的結(jié)構(gòu)設(shè)計規(guī)范。在國內(nèi)外開合屋蓋結(jié)構(gòu)工程經(jīng)驗與相關(guān)研究成果的基礎(chǔ)上,并結(jié)合工程實踐,對開合屋蓋結(jié)構(gòu)設(shè)計荷載取值方法進行了較為全面的論述。開合屋蓋結(jié)構(gòu)需要對全開、全閉及運行過程狀態(tài)分別進行計算分析,且應考慮出現(xiàn)故障時活動屋蓋可能處于非對稱狀態(tài)等不利位置。積雪荷載對結(jié)構(gòu)設(shè)計的合理性與活動屋蓋的運行均有很大影響。當屋蓋處于全開狀態(tài)時,屋頂洞口周圍的脈動風壓將顯著增大。提出了確定結(jié)構(gòu)設(shè)計溫差的計算方法,并分析了溫度對驅(qū)動控制系統(tǒng)可能產(chǎn)生的不利影響。引入了有效使用年限的概念,對活動屋蓋處于非基本開合狀態(tài)與運行狀態(tài)的地震作用可進行適當折減。應注意臺車驅(qū)動系統(tǒng)的轉(zhuǎn)向輪、端止緩沖器等對固定屋蓋的集中反力作用。
[關(guān)鍵詞]開合屋蓋;結(jié)構(gòu)設(shè)計;荷載;作用;研究
中圖分類號:TU393文獻標識碼:A文章編號:1002-848X(2011)12-0039-13
Research on loading evaluation for retractable roof structure design
Fan Zhong, Wang Yihua, Luan Haiqiang,Yang Su,Hu Chunyang(China Architecture Design and Research Group,Beijing 100044,China)
Abstract:Retractable roof is a kind of relatively novelty structure form,and there are no corresponding structure design codes at home and abroad. Based on the project experience of retractable roof structures and related research results up to now,and combined with the engineering practice,the loading evaluation method for retractable roof structure design was comprehensively discussed. The structure of retractable roof in fully opened state, fully closed state and opening/closing process should be analyzed respectively,and the condition that movable roof may be in asymmetric etc unfavorable positions when the fault happens should be taken into account. Snow load has a significant effect on the rationality of structure design and the operation of movable roof. When the roof is in fully open state,pulsation wind pressure around the roof opening will significantly increase. The method of determining the structure design temperature difference was presented,and the potentially unfavorable effect on driving & controlling system by temperature action was studied. The concept of equivalent working age was introduced, and the seismic load of movable roof in non-basic state and opening/closing process can be discounted properly. The reacting forces of steering wheel,end stop devices etc in trolley-drive system on the fixed roof should be noticed.
Keywords:retractable roof; structure design; load; action; research
作者簡介:范重,博士,教授級高級工程師,一級注冊結(jié)構(gòu)工程師,Email:fanz@cadg.cn。
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