中承式拱橋動力特性分析.pdf

1、華中科技大學碩士學位論文中承式拱橋動力特性分析姓名：錢驥申請學位級別：碩士專業(yè)：橋梁與隧道工程指導教師：樊建平;廖碧海20080602華 中 科 技 大 學 碩 士 學 位 論 文 IIAbstract Half-through arch bridge is a common structure, in recent decades it has great development in China, but the design t

2、heoretical of Half-through arch bridge is relatively backward in engineering practice, and the study of the dynamic characteristics is behind the static characteristics. At this stage, due to the development of the pipe

3、concrete arch bridge and the skeleton concrete arch bridge, half-through arch bridges have been become more large-span and light direction, it is very urgent to analysis the dynamic response of dynamic load (such as vehi

4、cles, wind and earthquakes.) This paper analysis the advantages and disadvantages of the method of analytical analysis and finite element， which is based on the collection of information of Kinetics of arch bridge, at th

5、e same time we use Dangtu Road Bridge as the background, establishing a space finite element model by MIDAS, taking into account the difference parameters of the process of simplifying the structure and the Constraints o

6、f bridge desk；In addition，we take into account the impact on self-vibration characteristics for the thickness of bridge pane.,this paper still consider the changing of self-vibration characteristics which lead by elastic

7、ity modulus. According to the theory of self- vibration and the test results after the bridge been repair and reinforced, we evaluation the performance of this bridge by the theory of kinetics. According the damage of br

8、idge panel of Dangtu Road， we simulate dynamic response of the bridge when the length of booms been changed，compare the changing law of dynamic response which cause by the boom length，and take a conclusion that the dynam

9、ic response of bridge panel will be more strength when the boom is shorter. dynamic response of bridge is main impacted by fundamental frequency，but the impact of speed of traffic also can not be ignored，this paper consi