混凝土斜柱桥若干力学问题研究建筑与土木工程专业论文.docxVIP

(3)斜柱桥受不均匀沉降影响较大，会增大桥面变形和危险截面的内 (3)斜柱桥受不均匀沉降影响较大，会增大桥面变形和危险截面的内 力，但由于其结构上的优势，沉降后的变形符合规范要求，内力值仍比一 般桥型小。地基不均匀沉降发生后，两V型斜柱结构连接处采用铰接，相 比刚接其变形和内力受到的影响更小，实际工程中在复杂地质条件下宜采 用铰接形式。 (4)各斜柱桥桥型相比，上承式斜柱桥的结构刚度最大且内力受地基 不均匀沉降的影响最小，中承式斜柱桥的变形受不均匀沉降的影响最小。 (5)两联斜柱桥与三联斜柱桥的变形和内力及受地基不均匀沉降的影 响具有相似的数值及性质，多个V型斜柱结构之间具有良好的协作性能。 关键词：桥梁斜柱桥地基不均匀沉降变形 内力 万方数据 E仃ect E仃ect of Deformation and Internal Force of Inclined Column Bridge the Uneven Settlement of Foundation ABSTRACT Since modern times，晰th the constant breakthroughs in materials science，the bridge structure and the scale also in the continuous development and bridge engineering research hot concentrated in the realization of larger span bridge，and Bridge stiffness in the study did not have a great breakthrough．In practical engineering，in order to meet the requirements of some bridge stiffness，it is often required to take a lot of measures to increase the cost and limit the span． China’S 11igh·speed railway construction is still in rapid development，11igh-speed rail on the bridge’S lateral stiffness，vertical stiffness and torsional stiffness of a very lligh demand．In order to meet the need，my tutor proposed a new concept of bridge-inclined column bridge． Through changing the load transfer mode，to achieve”beam become a column”，a substantial increase in the bridge structure stiffness and high stiffness under the spanning ability,and effectively reduce the project cost． The inclined column bridge bridge is a new structure form，there are still many problems need to be studied．This paper focuses on the analysis of inclined column concrete bridge cable force adjustment，internal force and deformation characteristics，deformation and internal force of the uneven settlement of foundation effects and other issues，to lay the foundation for the future development of the theory of inclined column bridge．The analysis mainly to bridge professional software MIDAS Civil to rely on were simulation analysis．The following are the main conclusions of this paper： (