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消防車等效均布活荷載取值研究
范重1 ,鞠紅梅2,彭中華3
摘 要

(1 中國(guó)建筑設(shè)計(jì)研究院,北京 100044; 2 華電重工裝備有限公司,北京 100048;3 北京交通大學(xué),北京 100044)

 

[摘要]消防車荷載對(duì)結(jié)構(gòu)設(shè)計(jì)的安全性與經(jīng)濟(jì)性影響很大,我國(guó)現(xiàn)行《建筑結(jié)構(gòu)荷載規(guī)范》(GB500092001)(2006年版)規(guī)定的消防車等效均布活荷載取值比較粗略,未給出工程中常用的35m跨度雙向板的荷載取值,也未對(duì)地下室頂板覆土?xí)r荷載的折減方法做出明確規(guī)定。綜合考慮消防車臺(tái)數(shù)、樓板跨度、長(zhǎng)寬比、覆土厚度等因素的影響,按荷載最不利布置原則確定消防車與板的相對(duì)位置,采用有限元法確定消防車的等效均布活荷載值,并提出了相應(yīng)的設(shè)計(jì)建議。

[關(guān)鍵詞]消防車;等效均布活荷載;樓板跨度;覆土厚度;動(dòng)力系數(shù)

中圖分類號(hào):TU312.1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2011)03-0001-06

Study on equivalent uniform live load for fire engines

Fan Zhong1, Ju Hongmei2, Peng Zhonghua3

1 China Architecture Design & Research Group, Beijing 100044, China; 2 Huadian Heavy Industry Co., Ltd.,

Beijing 100048, China;3 Beijing Jiaotong University, Beijing 100044, China

Abstract:The fire engine load has a great effect on the safety and economy of structural design. In according with the provisions of Load code for the design of building structuresGB500092001) (2006 version), the equivalent uniform live load value of fire engine for 3m to 5m span twoway slab commonly used in engineering is not given, nor the approach to estimate of decrement fire engine load when the basement roof with covered soil. Considering the number of fire engines,floor spanaspect ratio, soil thickness and other factors,according to the principles of the most unfavorable load, the relative positions of fire engines were determined. The equivalent uniform  live load for slabs was estimated by using finite element method, and some design recommendations were proposed.

Keywords:fire engine; equivalent uniform live load; floor span; soil thickness; dynamic factor

作者簡(jiǎn)介:范重,博士,教授級(jí)高級(jí)工程師,一級(jí)注冊(cè)結(jié)構(gòu)工程師,Email:fanz@cadg.cn

參考文獻(xiàn)

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