本文選題：混凝土壩 + 澆筑倉　； 參考：《水利水運(yùn)工程學(xué)報(bào)》2017年03期

【摘要】：在水工混凝土壩溫控過程中,以溫度計(jì)實(shí)測溫度表征混凝土澆筑倉的平均溫度,則可方便準(zhǔn)確地監(jiān)控混凝土澆筑倉的溫度。結(jié)合1.0 m×1.0 m,1.5 m×1.5 m,1.0 m×1.5 m,2.0 m×1.5 m四種典型水管間距的混凝土棱柱體模型,首先采用水管冷卻有限元法進(jìn)行溫度場仿真計(jì)算,接著選取含冷卻水管混凝土模型典型截面,并通過引入四邊形12節(jié)點(diǎn)等參單元來簡化獲取截面內(nèi)任意點(diǎn)溫度,然后建立溫度計(jì)位置優(yōu)選模型,最后采用優(yōu)化算法求解獲得最優(yōu)的溫度計(jì)幾何位置。算例分析表明,在混凝土澆筑倉內(nèi)存在多個(gè)位置的溫度歷程與澆筑倉平均溫度歷程接近,1.0 m×1.5 m截面的溫度計(jì)位置分布近似為線性分布,其他截面為拋物線分布。在這些位置處埋設(shè)溫度計(jì),所測溫度可較好地表征澆筑倉的平均溫度,供溫度監(jiān)控參考。
[Abstract]:In the process of temperature control of hydraulic concrete dam, it is convenient and accurate to monitor the temperature of concrete pouring silo if the average temperature of concrete pouring silo is represented by temperature measured by thermometer. Combined with the concrete prism model of 1.0 m 脳 1.0 m 脳 1.5 mU 1.0 m 脳 1.5 mU 2.0 m 脳 1.5 m water pipe spacing, the temperature field was calculated by the finite element method of pipe cooling, and then the typical section of the concrete model containing cooling water pipe was selected. The quadrilateral 12-node isoparametric element is introduced to get the temperature of any point in the section. Then the optimal position selection model of the thermometer is established and the optimal geometric position of the thermometer is obtained by using the optimization algorithm. The analysis of numerical examples shows that the temperature history with multiple positions in the concrete pouring silo and the average temperature history of the pouring silo are close to the linear distribution of the thermometer position distribution of 1.0 m 脳 1.5 m section, while the other sections are parabola distribution. The temperature measured by embedding thermometer at these locations can better characterize the average temperature of the pouring silo and provide reference for temperature monitoring.
【作者單位】： 三峽大學(xué)水利與環(huán)境學(xué)院;
【基金】：國家自然科學(xué)基金資助項(xiàng)目(51209124)
【分類號】：TV544

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