季節(jié)凍土區(qū)混凝土渠與玻璃鋼渠體防凍效益對(duì)比研究
[Abstract]:In order to study the variation law of channel frost heaving under different thermal insulation measures in seasonal frozen soil region, a field test was carried out on the Yangjia Henan side main canal in Hetao Irrigation area during a freezing and thawing period, and the freezing depth and frost heave quantity under different thermal insulation measures were analyzed. The results showed that the thermal insulation effect of 6 cm thickness was better than that of 4 cm thickness on sunny slope and shade slope, and that of polyurethane with 4 cm thickness on Yangpo was better than that of polystyrene with 4 cm thickness. However, the thermal insulation effect of polyurethane with 4 cm thickness of shady slope is worse than that of polystyrene with 4 cm thickness. From the aspects of hydraulic condition, water saving benefit, investment cost and so on, the application of concrete channel and FRP channel are compared and analyzed. The FRP channel can reduce the cost of demolition and reconstruction and the cost of heat preservation measures, and the comprehensive investment is not much different from that of concrete channel. With the rapid increase of water demand, FRP channel has a good application prospect.
【作者單位】: 內(nèi)蒙古科技大學(xué)建筑與土木工程學(xué)院;中冶交通建設(shè)集團(tuán)有限公司;
【基金】:內(nèi)蒙古自治區(qū)自然科學(xué)基金項(xiàng)目(2013MS0717)
【分類號(hào)】:TV698.26
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