本文選題：正陽門城樓 + 交通振源調(diào)查�。� 參考：《北京交通大學》2014年博士論文

【摘要】：摘要：古建筑經(jīng)過幾百年的朝代更迭和歲月風雨的消磨,已變得破舊脆弱,而隨著城市交通建設的飛速發(fā)展,交通引起的環(huán)境振動對古建筑危害無疑是雪上加霜。因此,交通振動引起的古建筑的動力響應研究是當下極其重要、迫切的古建筑保護課題,無論是理論研究成果還是現(xiàn)場實測分析經(jīng)驗都將對古建筑保護和修繕起到指導與規(guī)范作用。 以國家重點文物保護單位正陽門城樓及箭樓為振動研究對象,通過理論研究計算得到了在正陽門地區(qū)地面交通車輛振動和地下地鐵列車振動影響下城樓及箭樓的動力響應特性。 首先,對正陽門地區(qū)交通振源進行實地調(diào)察分析。通過現(xiàn)場交通調(diào)查,對地面交通車流進行統(tǒng)計,總結(jié)該地區(qū)地面各條交通線路中不同類型車輛的車流密度、相鄰車輛之間的時間間隔等車流特性,從而分析得到地面不同類型車輛振源的分布特性。 其次,基于交通調(diào)查得到的交通振源分布規(guī)律,對正陽門地區(qū)地面交通振動和地鐵列車振動特性進行合理描述并推導其表達式。通過建立單一車輛動力模型,分別研究不同類型車輛的振動特性；結(jié)合現(xiàn)場交通調(diào)查得到的交通流量特性,總結(jié)每條交通線路上車輛的振動表達式；考察在紅綠燈控制下的各條線路之間車輛的通行組合,從而得到地面交通振源的實際振動表達式；并對地面車輛振動的傳播、衰減規(guī)律進行分析；基于正陽門地區(qū)交通調(diào)查的地面交通振源特性研究為古建筑的動力響應分析提供振源依據(jù),是本文的創(chuàng)新性工作內(nèi)容之一�？紤]正陽門地區(qū)地層特性和地鐵2號線位置特性,結(jié)合現(xiàn)有的地鐵列車振動研究成果,分析地鐵列車振源的傳播、衰減特性。 第三,對正陽門地區(qū)地上、地下的交通振動場進行合理的疊加,為地上、地下交通振動對古建的共同影響提供振源依據(jù)。由于地面交通車輛振動與地鐵列車振動的傳播特性不同,以及與正陽門古建筑的空間位置的不同,兩個振動場的疊加考慮了振動的傳播方式、傳播方向、衰減規(guī)律及引起古建筑的振動方向四個因素,得到了交通振動影響下地面任意一點的振動表達式,這也是本文的創(chuàng)新性工作內(nèi)容之一。 第四,基于上述正陽門地區(qū)地上、地下交通振源的研究成果,通過建立古建筑動力分析模型,合理修正模型的計算剛度系數(shù),理論計算得到城樓及箭樓在不同類型交通振源影響下動力特性：(1)正陽門古建筑在交通振動影響下,建筑的振動位移、振動速度隨建筑高度增高而變大；(2)地面交通振動引起的古建筑的水平方向振動明顯,城樓頂層水平方向振動位移最大值為0.32mm,振動速度最大值為4.5mm/s,箭樓頂層水平方向振動位移最大值為0.28mmm,振動速度最大值為3.8mm/s；(3)交通振動影響下當古建筑的振動頻率在1.7-2.3Hz之間時振動位移、速度幅值最大；(4)地面不同類型車輛振動對古建筑的影響不僅與車輛自身的振動特性相關,主要還取決于該線路中不同類型車輛的車流密度,車流密度越大對古建筑的振動影響越大。 本文通過理論計算得到的正陽門古建筑振動特性規(guī)律與現(xiàn)場振動實測規(guī)律一致,說明了本文基于現(xiàn)場交通調(diào)查的交通振源特性研究方法和不同類型交通振源影響下古建筑的動力響應分析方法合理、可行,為古建筑在交通振動影響下的動力預測分析提供了很好的研究思路。
[Abstract]:Abstract : The ancient architecture has become more and more fragile after a few hundred years ' dynasties of dynasties and years of wind and rain , but with the rapid development of urban traffic construction , the environmental vibration caused by traffic is undoubtedly a frost on ancient buildings . Therefore , the research on dynamic response of ancient buildings caused by traffic vibration is an extremely important and urgent task of ancient architecture protection .

Based on the national key cultural relics protection unit Zhengyangmen Chenglou and the arrow tower as the vibration research objects , the dynamic response characteristics of the towers and the rockets under the influence of the vibration of the ground traffic vehicle and the vibration of the underground subway train in the area of the Zhengyangmen area are calculated through theoretical study .

Firstly , the traffic vibration source in the area of the positive Yangmen area is analyzed . Through the field traffic investigation , the traffic flow characteristics of different types of vehicles in different types of vehicles in the area of the area are summarized , and the distribution characteristics of the vibration sources of different types of vehicles are analyzed .

Secondly , on the basis of traffic investigation , the distribution law of traffic vibration sources is established , and the vibration characteristics of the ground traffic and the train vibration are reasonably described and the expression is deduced . By establishing a single vehicle power model , the vibration characteristics of different types of vehicles are studied respectively .
combining the traffic flow characteristics obtained by the field traffic investigation , summarizing the vibration expression of the vehicle on each traffic line ;
the traffic combination of the vehicles between each line under the control of the traffic light is investigated , so that the actual vibration expression of the ground traffic vibration source is obtained ;
The propagation and attenuation law of ground vehicle vibration are analyzed .
Based on the study of the characteristics of the ground traffic vibration sources in the area of the Zhengyangmen area , this paper provides the source basis for the dynamic response analysis of ancient buildings , which is one of the innovative work contents of this paper . Taking into account the formation characteristics of the Zhengyangmen area and the location characteristics of the metro line No . 2 , the propagation and attenuation characteristics of the vibration source of the subway train are analyzed in combination with the existing research results of the subway trains .

Third , the ground and underground traffic vibration fields are superposed reasonably to the above ground and the underground traffic vibration to provide the source basis for the common influence of the ancient buildings . Due to the difference between the vibration of the ground traffic vehicle and the vibration of the subway train and the space position of the ancient building , the superposition of the two vibration fields takes the four factors of the vibration direction , the propagation direction , the attenuation law and the vibration direction of the ancient building , and obtains the vibration expression of any point on the ground under the influence of the traffic vibration , which is also one of the innovative work contents of this paper .

Fourthly , based on the research results of the above ground and underground traffic vibration sources in the above - mentioned positive - yang - men area , the dynamic characteristics of the towers and the towers under the influence of different types of traffic vibration sources are calculated by building dynamic analysis models of ancient buildings and reasonably correcting the calculated stiffness coefficients of the models : ( 1 ) the vibration displacement and the vibration velocity of the buildings are increased with the height of the building under the influence of traffic vibration ;
( 2 ) In the horizontal direction of the ancient buildings caused by the vibration of the ground traffic , the maximum vibration displacement at the top level of the towers is 0.32 mm , the maximum vibration velocity is 4.5 mm / s , the maximum vibration displacement in the horizontal direction of the top floor of the tower is 0.28 mm , and the maximum vibration velocity is 3.8 mm / s ;
( 3 ) When the vibration frequency of the ancient building is 1.7 - 2.3 Hz under the influence of traffic vibration , the speed amplitude is the largest ;
( 4 ) The influence of the vibration of different types of vehicles on the ancient buildings is not only related to the vibration characteristics of the vehicle itself , but also depends on the vehicle flow density of different types of vehicles in the line , and the greater the influence of the vehicle flow density on the vibration of the ancient buildings .

In this paper , the regularity of the vibration characteristics of the old buildings , which is obtained by theoretical calculation , is consistent with the field vibration measurement rule . The research methods of the traffic vibration source characteristics based on the field traffic investigation and the dynamic response analysis method of the ancient buildings under the influence of different types of traffic vibration sources are reasonable and feasible , which provides a good idea for the dynamic prediction analysis of the ancient buildings under the influence of traffic vibration .
【學位授予單位】：北京交通大學
【學位級別】：博士
【學位授予年份】：2014
【分類號】：TU311.3

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本文編號：1940654