本文選題：道路工程 + 地源熱泵路基��； 參考：《公路交通科技》2014年06期

【摘要】：為解決季節(jié)性凍土區(qū)路基結(jié)構(gòu)因凍解破損而發(fā)生的各種病害,利用地源熱泵系統(tǒng)改變路基結(jié)構(gòu)溫度場。以109國道青海省季節(jié)性凍土區(qū)路基為研究實(shí)例,運(yùn)用ANSYS模擬分析109國道季節(jié)性凍土區(qū)原始溫度場,并分析了地源熱泵路基的工作原理及運(yùn)行效果;介紹了地源熱泵系統(tǒng)形式及設(shè)計(jì)計(jì)算中的有關(guān)問題,得出地源熱泵路基系統(tǒng)的設(shè)計(jì)參數(shù);利用ANSYS有限元法對(duì)地源熱泵路基的水平埋管進(jìn)行模擬分析,通過對(duì)比分析得出路堤中水平埋管宜分2層布置(-1 m處埋置4根,每管間距為2 m;-3.5 m處埋置5根,每管間距為4 m)。在上述設(shè)計(jì)方案下,該地區(qū)在全年最冷時(shí)刻路基易發(fā)生凍脹區(qū)域的地溫超過0℃。通過模擬分析得出,地源熱泵路基是一種新型路基結(jié)構(gòu),該系統(tǒng)對(duì)于防治季節(jié)性凍土路基凍脹病害具有積極作用。
[Abstract]:In order to solve the various diseases of subgrade structure in seasonal frozen soil region caused by breakage, the ground source heat pump system is used to change the temperature field of subgrade structure. Taking the subgrade of the seasonal frozen soil region of Qinghai Province as an example, the original temperature field of the seasonal frozen soil region of the 109 national highway is simulated by ANSYS, and the working principle and operation effect of the ground source heat pump subgrade are analyzed. This paper introduces the form of ground source heat pump system and some problems in design and calculation, obtains the design parameters of ground source heat pump subgrade system, simulates and analyzes the horizontal buried pipe of ground source heat pump subgrade by ANSYS finite element method. Through comparison and analysis, it is concluded that the horizontal buried pipes in embankment should be divided into 2 layers and arranged at 1 ~ 1 m, 5 tubes are buried at a distance of 2 m ~ 3.5 m, and 4 m 路m ~ (-1) of each tube. Under the above design scheme, the ground temperature of the embankment prone to frost heaving is over 0 鈩，

本文編號(hào)：1921663