- 摘 要
-
（中國建筑設計研究院， 北京 100044）
［摘要］《建筑結(jié)構(gòu)荷載規(guī)范》（GB 50009—2012）中對于汽車庫雙向板跨度小于3m×3m時的樓面等效均布活荷載值并未做出明確規(guī)定。在進行汽車庫設計時，可能出現(xiàn)在柱距不變的條件下改變次梁間距的情況，導致樓塊尺寸減小后產(chǎn)生樓面梁活荷載顯著增大的異常情況。而且近年來的新車型對機動車等效活荷載值的影響尚缺乏相應的研究。通過收集國內(nèi)外新型小客車型號，對其外形尺寸、軸距、輪壓等相關(guān)參數(shù)進行統(tǒng)計分析，得到用于結(jié)構(gòu)設計的標準小客車計算參數(shù)。對不同跨度的單向板、雙向板、樓面次梁與主梁的機動車等效均布活荷載進行了深入研究，考慮了不同柱網(wǎng)尺寸、次梁布置方式以及荷載不利布置的影響。根據(jù)計算分析結(jié)果，提出了相應的設計建議。
［關(guān)鍵詞］機動車; 等效均布活荷載; 樓板; 樓面梁; 設計建議
中圖分類號：TU312，TU375 文獻標識碼：A 文章編號：1002-848X(2014)17-0088-07
Study on the equivalent uniform live load of garages
Fan Zhong, Cao Shuang
(China Architecture Design & Research Group, Beijing 100044， China)
Abstract: In the existing Load code for the design of building structures (GB 50009—2012), there is no definite provision about equivalent uniform live load value of two-way floors whose spans are less than 3m×3m. During the design of garage under the same column spacing, the live load of floor beams increases significantly due to the reduced floor size when the secondary beam spacing is changed. In recent years, the impact of new motor vehicle on the equivalent uniform live load is still lack of appropriate research. By collecting domestic and international new minibus, related parameters including dimensions, wheelbase and wheel pressure were statisticed and analyzed, calculation parameters of the standard minibus for structural design were obtained. Considering the influence of different column grid sizes, secondary beam layout and unfavorable live-load distribution, motor vehicles equivalent uniform live loads of one-way slab, two-way slab, secondary beam and girder under different spans were further researched. On the base of calculation and analysis results, appropriate design recommendations were put forward.
Keywords:motor vehicle; equivalent uniform live load; floor; floor beam; design recommendation
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。
參考文獻
［1］周軍文，魯良輝.無梁樓蓋地下室頂板消防車活荷載取值探討［J］.四川建筑，2008，28(6)，119-120.
［2］雙向板的梁、板消防車等效均布荷載選用說明［R］.成都:四川省建筑科學研究院, 2010.
［3］范重,鞠紅梅,彭中華.消防車等效均布活荷載取值研究［J］.建筑結(jié)構(gòu),2011,41(3),1-7.
［4］蔡健,何春保,沈建華, 等.局部荷載作用下有梁矩形板的彈性分析［J］.力學與實踐,2004,26(6):45-48.
［5］GB 50009—2012 建筑結(jié)構(gòu)荷載規(guī)范［S］.北京:中國建筑工業(yè)出版社,2012.
［6］JGJ 100—98 汽車庫建筑設計規(guī)范［S］.北京:中國建筑工業(yè)出版社,1998.
［7］GB 50068—2001 建筑結(jié)構(gòu)可靠度設計統(tǒng)一標準［S］.北京:中國建筑工業(yè)出版社,2001.
［8］GB 500l0— 2010 混凝土結(jié)構(gòu)設計規(guī)范［S］.北京:中國建筑工業(yè)出版社,2011.
