列車誘發地鐵車輛段上蓋住宅的動力響應分析

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列車誘發地鐵車輛段上蓋住宅的動力響應分析(任務書,開題報告,外文翻譯,論文13000字)
摘要
本文對武漢某地鐵車輛段運用庫內振源荷載進行現場實測,然后運用ANSYS有限元軟件建立該車輛段上蓋住宅的精細化有限元模型,將實測振源荷載作為輸入激勵,并分析了對上蓋建筑物的動力響應,得出的一些結論可為后續地鐵車輛段上蓋物業的合理設計提供一些參考。
本文主要研究了地鐵車輛段上蓋住宅在列車荷載的作用下的動力響應,列車荷載屬于弱振,不會影響結構的安全性,但會影響建筑內人們的舒適性,因此準確分析列車誘發地鐵車輛段上蓋住宅的動力響應規律十分重要。
研究結果表明:水平向的振動加速度峰值總體上是隨層高增大而減小,鉛垂向的振動加速度峰值隨層高先減小后增大;三個方向的振動主頻率集中在20Hz~40Hz之間,頻率峰值均在30Hz附近;振源強度對地鐵車輛段上蓋住宅動力響應的影響很大,隨著振源荷載的增大,地鐵車輛段上蓋住宅的動力響應明顯增大。
本文的特色:地鐵車輛段上蓋物業作為一種新型的建筑組織形式,出現的歷史較短,國內外對這方面的研究較少,因此本文以武漢某地鐵車輛段上蓋住宅為研究對象,計算其在列車荷載作用下水平向的動力響應,并分析振源強度、樓層等參數對地鐵車輛段上蓋住宅動力響應的影響規律。
關鍵詞:地鐵車輛段;上蓋住宅;弱振;精細化有限元模型;動力響應 
Abstract
In this paper, a Metro depot in Wuhan is measured on the spot by using the vibration source load in the depot, and then a refined finite element model of the over-track residence of the depot is established by using ANSYS finite element software. The measured vibration source load is used as input excitation, and the dynamic response of the over-track residence is analyzed. Some conclusions are drawn which can provide some references for the reasonable design of the over-track residence of the subsequent Metro depot.
This paper mainly studies the dynamic response of theover-track residence of Metro depot under the action of train load. The train load belongs to weak vibration, which will not affect the safety of the structure, but will affect the comfort of the people in the building. Therefore, it is very important to accurately analyze the dynamic response law of the over-track residence of Metro depot induced by train.
The results show that the peak value of horizontal vibration acceleration decreases with the increase of floor height, and the peak value of vertical vibration acceleration decreases first and then increases with the increase of floor height; the main frequencies of vibration in the three directions are concentrated between 20Hz and 40Hz, and the peak frequencies are all around 30Hz; the intensity of vibration source has a great influence on the dynamic response of the residence on the upper cover of the Metro depot, and with the increase of the source load, the ground vibration acceleration increases. The dynamic response of the over-track residence of the railway depot increases obviously.
The characteristics of this paper are as follows: as a new type of building organization, the history of the over-track residence of Metro depot is relatively short, and there is little research on this aspect at home and abroad. Therefore, this paper takes the over-track residence of a Metro Depot in Wuhan as the research object, calculates its horizontal dynamic response under the action of train load, and analyses the influence of vibration source strength, floor and other parameters on the over-track residence of Metro depot. The influence law of dynamic response.
Key words:metro depot; over-track residence; weak vibration; refined finite element model; dynamic response

目錄
摘要    I
Abstract    II
第1章緒論    1
1.1 研究背景與意義    1
1.2 國內外研究現狀    1
1.2.2 地鐵車輛段上蓋物業的開發形式及結構特點    1
1.2.1 列車引起上蓋建筑物振動特性與反應規律的研究    2
1.3 存在的問題    3
1.4 本文所做的工作及創新點    4
第2章武漢市某地鐵車輛段列車振源荷載及有限元模型的建立    5
2.1 工程簡介    5
2.2 振動測試方案    6
2.2.1 振源荷載實測    6
2.2.2 實測結果分析    6
2.3 有限元模型的建立    9
2.3.1 計算區段選區    9
2.3.2 荷載輸入方法    9
2.3.3 有限元模型    10
2.3.4 模態分析    11
2.3.5 模型驗證    12
2.4 本章小結    13
第3章武漢市某地鐵車輛段上蓋住宅動力響應分析    14
3.1 引言    14
3.2地鐵車輛段上蓋住宅動力響應分析    14
3.2.1 振動加速度的時頻分析    15
3.2.2 不同部位對上蓋住宅動力響應的影響    22
3.2.3 源強對上蓋住宅動力響應的影響    24
3.3 本章小結    26
第4章結論    28
4.1 結論    28
4.2  展望    29
參考文獻    30
致謝    31

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