本文選題：仿真混凝土材料　切入點：動力模型試驗　出處：《大連理工大學》2016年碩士論文　論文類型：學位論文

【摘要】：我國的能源需求量巨大,水電作為一項清潔能源,越來越被國家所重視,隨著國家制定發(fā)展規(guī)劃以來,更多的水利項目處于規(guī)劃或正在建設中。西南地區(qū)作為我國大部分水能資源的蘊藏地,有較多的水利項目在此展開,越來越多的重力壩興建起來。這些大壩從幾十米甚至達到幾百米,在刷新國內外重力壩記錄的同時給周邊地區(qū)帶來了極大的經(jīng)濟效益,并且在滿足附近省市的基礎上通過國家興建的電能輸送網(wǎng)絡送到京滬穗等等人口密集的大型城市或者區(qū)域。對于重力壩周圍的人民以及財產(chǎn)安全也提出了越來越多的需求。在這樣的背景下,包括重力壩在內的一批大型壩體安全性項目受到越來越多人的關注。相關學者對于重力壩的研究也從未止步。特別是在地震等自然因素下的破壞,作為一項巨大的破壞源,一旦重力壩地震時發(fā)生潰壩,后果將不堪設想。論文結合某水電工程碾壓混凝土重力的抗震措施開展了以下幾項工作：研究了相似關系的推導以及轉換,在原有相似關系的基礎上,通過確定相似條件,確立相似關系,為模型試驗在理論上提供支持。研究了仿真混凝土特性,通過材料實驗確定仿真混凝土材料動、靜力特性,并通過調整實驗配比,使仿真混凝土大部分材料特性指標達到模型試驗要求。并提取相關參數(shù)作為數(shù)值計算中模型本構。重力壩配筋的材料實驗、模擬層面試驗,模擬了壩體配筋及層面效果；進行擋水壩段、底孔壩段、溢流壩段若干組動力模型試驗。通過不同工況下重力壩的動力模型試驗對壩體破壞位置以及破壞形式進行研究,與上次所做實驗進行對比分析,得到不同配筋對于壩體抗震效果的影響。通過有限元軟件ABAQUS對壩體及附屬結構進行建模并進行非線性破壞分析,與模型試驗結果比照,對壩體損傷得到更全面的研究。
[Abstract]:China's energy demand is huge, hydropower as a clean energy, is paid more and more attention by the state, since the national development planning, more water conservancy projects in the planning or under construction. As most of the southwest reserves of hydropower resources in our country, there are more water projects in the dam, more and more these dams are built. From tens of meters or even hundreds of meters, has brought great economic benefits to the surrounding areas in the domestic and foreign record refresh dam at the same time, and meet the nearby provinces through the national construction of the power transmission network to the Beijing Shanghai and Guangzhou, a large city with a dense population or area. For the gravity dam around people and property safety are also put forward more and more requirements. In this context, including a number of large dam, dam safety project by More and more people's attention. Some scholars research for gravity dam has never stopped. Especially in the earthquake and other natural factors of the failure, as a great source of damage, once the earthquake occurs when the dam dam, the consequences will be unbearable to contemplate. Combined with the seismic measures of a hydropower project of RCC gravity to carry out the following work: a study of similarity between the derivation and conversion, based on the original similarity relation, by determining the similarity conditions, establish the similarity relation, model tests support in theory. The simulation research provides concrete characteristics, determined by material experiment simulation of concrete material, static characteristics, and by adjusting the experimental ratio, the simulation of concrete most of the material characteristics indicators meet the requirements of model test. And extract relevant parameters as the numerical constitutive model of gravity dam reinforcement material experiment, The level of simulation test, simulation of dam reinforcement and the level of effect; retaining dam, dam section of spillway section, several groups of dynamic model test. The dynamic model test under different conditions of dam dam damage location and damage types, and the last experiment were analyzed, effects of different reinforcement for earthquake the effect of the dam. Through the finite element software ABAQUS on the dam and accessory structure modeling and nonlinear failure analysis, and model test results comparison, get a more comprehensive study on the dam damage.

【學位授予單位】：大連理工大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TV642

【引證文獻】

相關碩士學位論文 前1條

1 韋國寶;重力壩—庫水—淤積層系統(tǒng)動力相互作用研究[D];昆明理工大學;2017年

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本文編號：1638280