本文選題：塔-線體系 + 縮尺模型��； 參考：《山東大學(xué)》2017年碩士論文

【摘要】：《電力發(fā)展"十三五"規(guī)劃》(2016-2020年)的頒布,標(biāo)志著我國電力行業(yè)的發(fā)展進(jìn)入了嶄新的階段。特高壓、高壓輸電塔-線體系作為輸電技術(shù)的主要載體,將越來越多的應(yīng)用于實(shí)際工程當(dāng)中,滿足超長距離、跨越復(fù)雜地形等特殊輸電要求。近些年來全球地震頻發(fā),輸電網(wǎng)絡(luò)的破壞事故時(shí)有發(fā)生,特別是我國的汶川地震,嚴(yán)重摧毀了地震災(zāi)區(qū)的輸電網(wǎng)絡(luò),給災(zāi)區(qū)救援與國民經(jīng)濟(jì)帶了巨大的損失。但目前,針對(duì)大跨越塔-線體系抗震性能的研究相對(duì)較少,特別是在塔-線體系的動(dòng)力響應(yīng)、近斷層地震波及入射角激勵(lì)和倒塌破壞機(jī)理方面。本文基于多振動(dòng)臺(tái)試驗(yàn)和顯示分析的有限元計(jì)算方法,開展了一系列的縮尺模型振動(dòng)臺(tái)試驗(yàn)與倒塌破壞的有限元模擬研究,主要對(duì)以下幾方面的內(nèi)容進(jìn)行了探討。(1)大跨越輸電塔-線體系的縮尺模型設(shè)計(jì)與制作�；诠こ虒�(shí)際,結(jié)合線彈性相似理論和模型二次縮尺方法,完成了塔-線體系縮尺模型的設(shè)計(jì);基于材料屬性和相似理論,選取恰當(dāng)?shù)目s尺材料完成模型加工;順序完成對(duì)塔-線體系縮尺模型的組裝,確保邊界條件的可行性。(2)大跨越輸電塔-線體系的試驗(yàn)研究�；诎自肼曉囼�(yàn)確定直線塔縮尺模型的動(dòng)力特性;選取遠(yuǎn)場(chǎng)地震波開展塔-線體系的多振動(dòng)臺(tái)試驗(yàn),對(duì)比分析塔-線體系和直線單塔的動(dòng)力響應(yīng),探討了多維地震作用和強(qiáng)震作用下的塔-線體系動(dòng)力響應(yīng)問題;開展塔-線體系倒塌破壞試驗(yàn),研究了直線塔倒塌破壞機(jī)理和薄弱區(qū)間分布。選取近斷層近場(chǎng)地震波開展多振動(dòng)臺(tái)試驗(yàn),探討了近斷層地震波和不同的入射角對(duì)塔-線體系動(dòng)力響應(yīng)的影響,明確最不利入射角。(3)大跨越輸電塔-線體系的有限元模擬研究。采用基于"Tian-Ma-Qu"模型的用戶材料子程序,完成了大跨越塔-線體系的倒塌模擬;對(duì)比分析振動(dòng)臺(tái)試驗(yàn)結(jié)果,明確直線塔的薄弱區(qū)間和倒塌激勵(lì);驗(yàn)證了用戶材料子程序?qū)τ谒?線體系倒塌破壞研究的可行性與振動(dòng)臺(tái)試驗(yàn)結(jié)果的準(zhǔn)確性。
[Abstract]:The promulgation of the 13th Five-Year Plan of Electric Power Development (2016-2020) indicates that the development of China's electric power industry has entered a new stage. As the main carrier of transmission technology, UHV, HV transmission tower-line system will be used more and more in practical projects to meet the special transmission requirements such as super-long distance and crossing complex terrain. In recent years, there are frequent earthquakes in the world, transmission network damage accidents occur from time to time, especially the Wenchuan earthquake in China, which seriously destroyed the transmission network in the earthquake-stricken areas, and brought huge losses to the disaster relief and national economy. But at present, there are few researches on seismic performance of long-span tower-line system, especially on the dynamic response of tower-line system, the mechanism of near-fault earthquake and incident angle excitation and collapse failure. Based on the finite element method of multi-shaking table test and display analysis, a series of finite element simulation studies of scale model shaking table test and collapse failure are carried out in this paper. This paper mainly discusses the design and manufacture of scale model of long span transmission tower-line system. Based on the engineering practice, combining the linear elastic similarity theory and the model quadratic scaling method, the design of the scale model of the tower-line system is completed, and based on the material properties and similarity theory, the appropriate scale material is selected to complete the model processing. In order to ensure the feasibility of boundary conditions, the experimental study of tower line system with long span transmission tower and line is carried out in order to assemble the scale model of tower line system in order to ensure the feasibility of boundary conditions. Based on the white noise test, the dynamic characteristics of the linear tower scale model are determined, and the dynamic responses of the tower line system and the straight line tower are compared and analyzed by selecting the far-field seismic waves to carry out the multi-shaking table test of the tower line system. The dynamic response of tower-line system under the action of multi-dimensional earthquake and strong earthquake is discussed, and the collapse failure test of tower-line system is carried out, and the collapse failure mechanism and weak zone distribution of linear tower are studied. The near-fault near-field seismic waves are selected to carry out multi-shaking table tests, and the effects of near-fault ground seismic waves and different incident angles on the dynamic response of tower line system are discussed, and the finite element simulation study of transmission tower line system with the most unfavorable incident angle. Based on "Tian-Ma-Qu" model, the collapse simulation of long-span tower-line system is completed, and the results of shaking table test are compared and analyzed, and the weak zone and collapse excitation of straight tower are determined. The feasibility of research on collapse failure of tower-line system by user material subroutine and the accuracy of shaking table test results are verified.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM75

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本文編號(hào)：1840150