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（中國(guó)核電工程有限公司河北分公司， 石家莊 050021）

［摘要］在核安全相關(guān)廠房的結(jié)構(gòu)設(shè)計(jì)中，事故工況下產(chǎn)生的高溫作用對(duì)混凝土結(jié)構(gòu)的效應(yīng)是不容忽視的問(wèn)題。而在工程中采用墻體保溫砂漿的做法可以很好地降低混凝土結(jié)構(gòu)的溫度內(nèi)力。由于事故工況產(chǎn)生的高溫作用具有較強(qiáng)的瞬時(shí)特征，溫度場(chǎng)分布也具有顯著的不均勻性，導(dǎo)致其內(nèi)力計(jì)算較為復(fù)雜。采用有限元軟件ANSYS對(duì)比了采用保溫砂漿及未采用保溫砂漿的混凝土墻體在高溫時(shí)程作用下各時(shí)刻的溫度場(chǎng)及內(nèi)力，得出采用保溫砂漿對(duì)降低混凝土結(jié)構(gòu)溫度效應(yīng)的結(jié)論。

［關(guān)鍵詞］混凝土結(jié)構(gòu)； 溫度作用； 保溫砂漿； 內(nèi)力分布

中圖分類(lèi)號(hào)： TU375    文獻(xiàn)標(biāo)識(shí)碼： A    文章編號(hào)： 1002-848X(2015)S2-0427-03

Numerical simulation analysis of concrete structure under accident condition temperature effect

Yang Xi, Zhao Jie

(China Nuclear Power Engineering Co., Ltd., Shijiazhuang 050021, China)

Abstract: The temperature effect due to the accident condition on the concrete structure is indispensable in the design of nuclear safety related structures. But the thermal-induced internal force of the concrete structure can be significantly reduced with thermal insulation mortar system. As the temperature variation is instantaneous, and the temperature field distribution is non-uniform, the internal force calculation is very complicated. According to finite element analysis with ANSYS, a detailed analysis of thermal field and internal force of concrete structure with thermal insulation mortar system or not due to temperature effect in each time has been performed. And after the comparison analysis, we can find the conclusion of the internal force in concrete structure with thermal insulation mortar system can be significantly reduced.

Keywords: concrete structure; temperature effect; thermal insulation mortar; internal force distribution

作者簡(jiǎn)介：楊熙，碩士，工程師，Email：xiyang812@163.com。