本文選題：拱壩 + 梯度理論　； 參考：《水力發(fā)電學(xué)報》2017年11期

【摘要】：拱壩的開裂與控制仍是目前設(shè)計、施工與運行中的技術(shù)難點。通過對拱壩中結(jié)構(gòu)應(yīng)力裂縫、溫度裂縫、特殊部位裂縫及基礎(chǔ)壩塊裂縫等現(xiàn)象的觀察與分析,揭示了拱壩工程溫度、應(yīng)力、變形和剛度的梯度致裂機理。從拱壩結(jié)構(gòu)應(yīng)力梯度、混凝土壩塊內(nèi)外溫度梯度、材料功能梯度、基礎(chǔ)壩塊抬動梯度等問題出發(fā),提出了將梯度作為一種衡量狀態(tài)或控制因素的梯度控制理論體系。從時間、空間、功能等多維度分解問題,形成了多物理量場的多維度梯度控裂方法體系。為拱壩的可靠設(shè)計、可控建設(shè)和安全運行提供關(guān)鍵理論和技術(shù)支撐。
[Abstract]:The cracking and control of arch dam are still the technical difficulties in design, construction and operation. Through the observation and analysis of structural stress cracks, temperature cracks, special site cracks and foundation dam block cracks in arch dams, the gradient cracking mechanism of temperature, stress, deformation and stiffness of arch dams is revealed. Starting from the stress gradient of arch dam structure, the temperature gradient inside and outside concrete dam block, the material function gradient, the lifting gradient of foundation dam block and so on, a gradient control theory system is put forward, which takes gradient as a measure of state or control factor. The multi-dimensional gradient crack control method system is formed from the multi-dimensional decomposition of time, space, function and so on. It provides key theoretical and technical support for reliable design, controllable construction and safe operation of arch dam.
【作者單位】： 清華大學(xué)水沙科學(xué)與水利水電工程國家重點實驗室;中國長江三峽集團(tuán)公司;
【基金】：國家自然科學(xué)基金(51339003;51279087) 清華大學(xué)自主科研項目(20161080079)
【分類號】：TV642.4
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本文編號：1823500