【摘要】：我國領土面積廣闊、人口眾多,隨著現(xiàn)代化的發(fā)展,電力需求逐步擴大。輸電塔線體系作為能源傳送的載體,在國家經(jīng)濟發(fā)展中占據(jù)著重要的地位,其正常工作是確保人們正常生產(chǎn)生活的基本條件。我國作為地震頻發(fā)的國家之一,地震導致的輸電塔線體系倒塌破壞現(xiàn)象屢見不鮮,嚴重阻礙災后救援工作的開展。輸電塔線結構作為典型的大跨越空間結構,其地震響應十分復雜,已有眾多研究表明,進行此類結構的抗震研究時有必要考慮地震波空間變化效應的影響。因此,對空間變化地震動激勵下輸電塔線體系的倒塌進行研究,具有重要的科學意義與實際價值。本文以500kV輸電塔線體系為研究對象,基于有限元軟件ABAQUS,采用動力顯式分析對空間變化地震動激勵下輸電塔線體系的倒塌破壞進行了模擬研究,主要完成了以下幾個方面的研究工作。(1)基于基巖功率譜和相干函數(shù),模擬生成了考慮場地條件的空間變化地震動。利用基巖與土層的剛度矩陣,通過基巖處輸入地震動計算得到地表的加速度時程,通過比較功率譜和相干函數(shù)的吻合程度,驗證了研究成果的準確性。(2)利用試驗與有限元相結合的分析方法對角鋼構件的滯回性能進行了研究。基于新型鋼材本構Tian-Ma-Qu模型,對往復荷載作用下的角鋼試驗結果進行了模擬,并將試驗及Riks分析結果引入到ABAQUS用戶子程序中,程序可用于后續(xù)空間變化地震動激下勵的輸電塔線體系倒塌模擬分析。(3)基于振動臺試驗結果,對非一致地震激勵下大跨越輸電塔線體系的地震響應進行研究�；谀M生成的考慮地震波空間變化特性的地震動時程,分別對輸電塔線體系進行一致激勵與非一致激勵。分別研究行波效應、相干效應和局部場地效應對結構響應的影響。(4)基于有限元軟件,對不同地震波激勵形式下輸電塔的層間位移角及倒塌破壞過程進行研究;基于考慮角鋼桿件滯回性能的用戶子程序,研究了多維一致輸入與多維多點輸入下輸電塔線結構的倒塌破壞過程,對不同激勵方式下結構的桿件失穩(wěn)、層間位移角及結構薄弱位置進行了對比分析。
[Abstract]:China has a vast territory and a large population. With the development of modernization, the demand for electricity is gradually expanding. As a carrier of energy transmission, transmission tower system plays an important role in the national economic development, and its normal work is the basic condition to ensure people's normal production and life. As one of the countries with frequent earthquakes, the collapse and destruction of transmission tower system caused by earthquake is common, which seriously hinders the development of post-disaster rescue work. As a typical long-span space structure, the seismic response of transmission tower line structure is very complex. Many studies have shown that it is necessary to consider the effect of seismic wave spatial variation in seismic research of this kind of structure. Therefore, it is of great scientific significance and practical value to study the collapse of transmission tower system under the excitation of spatially varying ground motion. In this paper, the 500kV transmission tower system is taken as the research object, and the dynamic explicit analysis based on the finite element software ABAQUS, is used to simulate the collapse and failure of the transmission tower system under spatially varying ground motion excitation. The main works are as follows: (1) based on the power spectrum of bedrock and coherence function, the spatial variation ground motion considering the site condition is simulated. By using the stiffness matrix of bedrock and soil layer, the acceleration time history of the ground surface is calculated by the input of ground motion at the bedrock. By comparing the power spectrum with the coherence function, the degree of agreement between the ground acceleration time history and the coherence function is obtained. The accuracy of the research results is verified. (2) the hysteretic behavior of angle steel members is studied by means of the analysis method of the combination of test and finite element method. Based on the new steel constitutive Tian-Ma-Qu model, the angle steel test results under reciprocating load are simulated, and the test and Riks analysis results are introduced into the ABAQUS user subprogram. The program can be used to simulate and analyze the collapse of transmission tower system excited by ground motion. (3) based on the results of shaking table test, the seismic response of large-span transmission tower system under non-uniform earthquake excitation is studied. Based on the time-history of ground motion generated by simulation considering the spatial variation of seismic wave, the transmission tower system is subjected to uniform excitation and non-uniform excitation respectively. The effects of traveling wave effect, coherent effect and local site effect on the structure response are studied respectively. (4) based on finite element software, the interstory displacement angle and collapse failure process of transmission tower under different seismic wave excitation forms are studied. Based on the user subroutine considering the hysteretic performance of angle steel bar, the collapse and failure process of transmission tower structure under multi-dimensional uniform input and multi-dimensional multi-point input is studied, and the member instability of the structure under different excitation modes is studied. The interstory displacement angle and the weak position of the structure are compared and analyzed.
【學位授予單位】：山東大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM75

【參考文獻】

相關期刊論文 前10條

1 田利;馬瑞升;;強震下考慮損傷累積效應的鋼管塔動力響應分析[J];地震工程與工程振動;2016年05期

2 Rui ZHOU;Zhou-hong ZONG;Xue-yang HUANG;Zhang-hua XIA;;多點激勵下多跨斜拉橋縮尺模型的地震響應研究.部分2:數(shù)值分析（英文）[J];Journal of Zhejiang University-Science A(Applied Physics & Engineering);2014年06期

3 吳秀峰;龐繼磊;鄧金鑫;;考慮行波效應的輸電塔線耦聯(lián)體系地震響應分析[J];建筑結構;2014年09期

4 Zhou-hong ZONG;Rui ZHOU;Xue-yang HUANG;Zhang-hua XIA;;多點激勵下多跨斜拉橋縮尺模型的地震響應研究.部分1:振動臺試驗（英文）[J];Journal of Zhejiang University-Science A(Applied Physics & Engineering);2014年05期

5 劉如山;劉金龍;顏冬啟;葉飛;林均岐;李吉;;蘆山7.0級地震電力設施震害調(diào)查分析[J];自然災害學報;2013年05期

6 田利;李宏男;黃連壯;;高壓輸電塔-線體系振動臺模型非等比例問題研究[J];振動與沖擊;2012年06期

7 謝強;孫力;;覆冰荷載作用下500kV輸電桿塔結構破壞機理試驗分析[J];高電壓技術;2010年12期

8 田利;李宏男;;基于《電力設施抗震設計規(guī)范》的地震動隨機模型參數(shù)研究[J];防災減災工程學報;2010年01期

9 李渝生;黃潤秋;;5.12汶川大地震損毀城鎮(zhèn)的震害效應與重建選址問題[J];巖石力學與工程學報;2009年07期

10 白鳳龍;李宏男;全偉;;地震動差動作用下大跨度空間網(wǎng)殼結構的反應分析[J];防災減災工程學報;2009年02期

相關博士學位論文 前1條

1 史大成;區(qū)域性場地地震動放大研究及應用[D];中國地震局工程力學研究所;2013年

相關碩士學位論文 前4條

1 鄭桐;東北地震區(qū)水平向基巖加速度反應譜衰減關系[D];中國地震局工程力學研究所;2012年

2 孫超睿;輸電塔線體系在多點激勵作用下的地震反應分析[D];哈爾濱工業(yè)大學;2010年

3 周飛秦;基于相位差譜的人工地震動擬合與橋梁地震響應分析[D];中南大學;2010年

4 李保華;輸電塔線體系多維地震反應分析[D];哈爾濱工業(yè)大學;2007年

，

本文編號：2396890