本文選題：仿真混凝土材料　切入點(diǎn)：動(dòng)力模型試驗(yàn)　出處：《大連理工大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

【摘要】：我國(guó)的能源需求量巨大,水電作為一項(xiàng)清潔能源,越來越被國(guó)家所重視,隨著國(guó)家制定發(fā)展規(guī)劃以來,更多的水利項(xiàng)目處于規(guī)劃或正在建設(shè)中。西南地區(qū)作為我國(guó)大部分水能資源的蘊(yùn)藏地,有較多的水利項(xiàng)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(dá)到幾百米,在刷新國(guó)內(nèi)外重力壩記錄的同時(shí)給周邊地區(qū)帶來了極大的經(jīng)濟(jì)效益,并且在滿足附近省市的基礎(chǔ)上通過國(guó)家興建的電能輸送網(wǎng)絡(luò)送到京滬穗等等人口密集的大型城市或者區(qū)域。對(duì)于重力壩周圍的人民以及財(cái)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(nèi)的一批大型壩體安全性項(xiàng)目受到越來越多人的關(guān)注。相關(guān)學(xué)者對(duì)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(xiàng)巨大的破壞源,一旦重力壩地震時(shí)發(fā)生潰壩,后果將不堪設(shè)想。論文結(jié)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(xiàng)工作：研究了相似關(guān)系的推導(dǎo)以及轉(zhuǎn)換,在原有相似關(guān)系的基礎(chǔ)上,通過確定相似條件,確立相似關(guān)系,為模型試驗(yàn)在理論上提供支持。研究了仿真混凝土特性,通過材料實(shí)驗(yàn)確定仿真混凝土材料動(dòng)、靜力特性,并通過調(diào)整實(shí)驗(yàn)配比,使仿真混凝土大部分材料特性指標(biāo)達(dá)到模型試驗(yàn)要求。并提取相關(guān)參數(shù)作為數(shù)值計(jì)算中模型本構(gòu)。重力壩配筋的材料實(shí)驗(yàn)、模擬層面試驗(yàn),模擬了壩體配筋及層面效果；進(jìn)行擋水壩段、底孔壩段、溢流壩段若干組動(dòng)力模型試驗(yàn)。通過不同工況下重力壩的動(dòng)力模型試驗(yàn)對(duì)壩體破壞位置以及破壞形式進(jìn)行研究,與上次所做實(shí)驗(yàn)進(jìn)行對(duì)比分析,得到不同配筋對(duì)于壩體抗震效果的影響。通過有限元軟件ABAQUS對(duì)壩體及附屬結(jié)構(gòu)進(jìn)行建模并進(jìn)行非線性破壞分析,與模型試驗(yàn)結(jié)果比照,對(duì)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(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TV642

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 韋國(guó)寶;重力壩—庫(kù)水—淤積層系統(tǒng)動(dòng)力相互作用研究[D];昆明理工大學(xué);2017年

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本文編號(hào)：1638280