本文選題：高土石壩 + 填筑質(zhì)量　； 參考：《天津大學》2014年碩士論文

【摘要】：高土石壩施工優(yōu)化是一個復雜的非線性多目標綜合優(yōu)化問題，大壩填筑質(zhì)量、安全與施工進度是土石壩施工的三大控制目標。這三個目標往往是相互關聯(lián)又相互約束的：當大壩填筑質(zhì)量的控制要求降低時，有助于加快大壩的施工進度，但會對大壩施工與運行安全帶來隱患；反之，若一味提高填筑質(zhì)量（超標準），則會使施工進度滯后；同時，各分區(qū)不同的填筑進度面貌也會對大壩沉降帶來不同的影響，甚至會影響大壩安全。因此，有必要在滿足各種施工要求的前提下，尋求填筑質(zhì)量、大壩安全、施工進度綜合最優(yōu)的土石壩各分區(qū)填筑進度安排，，并針對當前大壩填筑進程及大壩沉降現(xiàn)狀，尋求合理的施工進度調(diào)整與控制方案。本文的主要研究內(nèi)容和成果如下： （1）利用數(shù)字大壩系統(tǒng)實時采集的各壩料分區(qū)的壓實密度和填筑進度，建立了考慮各壩料分區(qū)實際壓實質(zhì)量的土石壩施工期沉降預測模型，克服了常規(guī)方法假定同分區(qū)壩料均質(zhì)同密度、忽略實際壓實質(zhì)量差異所導致的壩料密度空間分布不均性而帶來的弊端。進而利用遺傳和聲算法對模型的回歸系數(shù)進行尋優(yōu)重估，以提高模型的精度。計算所得的壩體不同分區(qū)沉降量及沉降差可作為大壩安全評價的指標。 （2）在定量分析土石壩填筑質(zhì)量、安全和進度相互關系的基礎上，建立了高土石壩填筑質(zhì)量-安全-進度綜合優(yōu)化模型，并提出了基于Vague集的土石壩施工模糊綜合優(yōu)化方法。針對傳統(tǒng)優(yōu)化算法的局限性，采用了遺傳和聲算法對這一復雜的非線性多目標優(yōu)化問題進行求解，可克服傳統(tǒng)優(yōu)化方法易于陷入局部最優(yōu)及要求模型可微可導的弊端，實現(xiàn)了算法的快速尋優(yōu)，進而可實現(xiàn)高土石壩填筑質(zhì)量、大壩安全和施工進度的均衡安排。 （3）以西南某高堆石壩工程為例開展了應用研究，驗證了本文沉降計算方法的有效性，并表明本文方法可實現(xiàn)在確保大壩填筑質(zhì)量與施工安全的前提下，對將來某一時期內(nèi)的大壩施工進度進行優(yōu)化安排，從而為高土石壩施工期沉降預測，以及施工進度計劃優(yōu)化與實時控制提供了一條新途徑。
[Abstract]:The construction optimization of high earth-rock dam is a complex nonlinear multi-objective comprehensive optimization problem. The construction quality, safety and construction schedule of the dam are the three major control objectives of earth-rock dam construction. These three objectives are often interrelated and mutually constrained: when the quality control requirements for dam filling are reduced, it will help to speed up the construction of the dam, but will bring hidden dangers to the construction and operation safety of the dam; conversely, If the quality of the fill is improved (exceeding the standard), the construction progress will lag behind, and at the same time, the different landfills in different districts will also have different effects on the settlement of the dam and even affect the safety of the dam. Therefore, it is necessary to seek the comprehensive and optimal construction schedule of earth-rock dam with comprehensive optimal quality, dam safety and construction schedule on the premise of satisfying various construction requirements, and aim at the current dam filling process and dam settlement status. Seek reasonable construction schedule adjustment and control scheme. The main contents and achievements of this paper are as follows: 1) by using the compaction density and filling schedule of each dam material partition collected in real time by digital dam system, the settlement prediction model of earth-rock dam during construction period considering the actual compaction quality of each dam material partition is established. It overcomes the disadvantages of the conventional method which assumes that the dam material is homogeneous and density in the same zone and neglects the uneven spatial distribution of the dam material density caused by the difference of the actual compaction quality. Then genetic harmonic algorithm is used to optimize the regression coefficient of the model to improve the accuracy of the model. The calculated settlement and settlement difference can be used as indexes of dam safety evaluation. 2) on the basis of quantitative analysis of filling quality, safety and schedule of earth-rock dam, the comprehensive optimization model of filling quality, safety and schedule of high earth-rock dam is established, and the fuzzy comprehensive optimization method of earth-rock dam construction based on Vague set is put forward. In view of the limitation of traditional optimization algorithm, genetic harmony algorithm is used to solve this complex nonlinear multi-objective optimization problem, which can overcome the disadvantages of traditional optimization method which is apt to fall into local optimum and require model to be differentiable. The fast optimization algorithm is realized, and the balanced arrangement of filling quality, dam safety and construction schedule of high earth and rock dam can be realized. Taking a high rockfill dam project in the southwest of China as an example, the application research is carried out, which verifies the validity of the settlement calculation method in this paper, and shows that this method can be realized on the premise of ensuring the quality of dam filling and the safety of construction. The optimization of dam construction schedule in a certain period in the future provides a new way for prediction of settlement during construction of high earth and rock dam, optimization of construction schedule and real-time control.
【學位授予單位】：天津大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TV641.1;TV52

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