Dissertation > Excellent graduate degree dissertation topics show

Analysisofinherentdefectsanddamagemechanism

Author: ChenZe
Tutor: MengYun
School: Chongqing Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Truss Arch Bridge Inherent defect Damage Mechanism Finite Element
CLC: U441.4
Type: Master's thesis
Year: 2010
Downloads: 27
Quote: 2
Read: Download Dissertation

Abstract

Truss Arch Bridge as the advantage of independent research and development in China in the 1980s a Newbridge, its relative to the other bridge-type project cost the provincial, safe and efficient construction across ability, pleasing in appearance, nearly 20 years to get rapid development. However, in the use of Truss Arch Bridge, the promotion process found that before some of the issues that had not been anticipated and the disease gradually emerged in most such bridges, which the cracking of the concrete structure, poor structural dynamic performance is more prominent, seriously affect the normal use of these bridges. This aroused the suspicion of the engineering community and Truss Arch Bridge application is not assured, and then stop in New highway construction. These appear diseased bridge were reinforced lower load level or build a Newbridge. Research report collected more than a dozen Truss Arch Bridge, the authors of the paper and classified data analysis, summed up the common diseases of Truss Arch Bridge. Broadly grouped according to the analysis of Truss Arch Bridge disease Truss Arch Bridge inherent texture and structure design, structural calculations and construction defects. Three inherent defects of the source of the village bridge as an engineering background, first of all, the use of the MIDAS-FEA finite element program to establish a local entity model Truss Arch Bridge in texture and structure design defects, injury mechanism analysis, come Truss Arch Bridge there are some defects in fact, abdominal segment, double vertical bar, chord structure constructed. Secondly, the establishment of a full-bridge simulation model using large general-purpose finite element program MIDAS-civil Truss Arch Bridge defects in the structure calculation injury mechanism analysis, draw Truss Arch Bridge in the size of structure calculations relevant parameter values, and whether the accrual existing inadequacies Finally, the authors combined on Key Construction Technology Analysis of Composite Truss Arch Truss Arch Bridge construction quality, improper influence certain aspects of the construction process, thus speeding before because of the above further development of the disease potential of the two defects. In this paper, the damage mechanism Truss Arch Bridge inherent defects analyzed, texture and structure defects is a deep-seated reasons trussed combination arch disease the structure calculations defects Truss Arch Bridge Disease of the potential pitfalls, construction deficiencies will further accelerate the emergence and development of the Composite Truss Arch Bridge.

Related Dissertations

CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics > Bridge strength and fatigue damage
© 2012 www.DissertationTopic.Net Mobile