Dissertation > Excellent graduate degree dissertation topics show

Continuous Rigid Frame Bridge box girder bottom slab crack Causes of analysis and Countermeasure Research

Author: GuanJi
Tutor: GuAnBang；ZhangXueSong
School: Chongqing Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Prestressed concrete Box girder backplane Cracking genesis Space force analysis Countermeasure
CLC: U445.7
Type: Master's thesis
Year: 2010
Downloads: 110
Quote: 2
Read: Download Dissertation

Abstract


In recent years , as China's economy and the development of transport , prestressed concrete continuous rigid frame bridge span bridge has been widely used. Because of the design theory is imperfect, construction quality defects and other reasons , some of prestressed concrete continuous rigid frame bridge in the construction or operation of the process giving rise to a considerable number of cracks , floor cracks more serious . Floor cracks appeared on the structural safety , durability and normal use have had a very negative impact , it is proven bottom slab crack origin , regardless of the conservation of the bridge or on the new bridge design and construction are essential . In this paper, the new Village River Bridge ( continuous rigid frame girder bridge ) as engineering background , for the construction of prestressed concrete floor beams cause tension cracking phenomenon of research work carried out as follows : Using the Bridge Doctor software for the overall construction phase full-bridge complex count . Provided by ANSYS parametric design language APDL, build the bridge partial model to analyze the prestressed steel beam linear setting error on the concrete floor stress. Complex count xinzhai River Bridge reinforcement method used , respectively, from the end of continuous rigid frame bridge parabolic selected span Additions transverse ribs aspects of a comparative analysis , finally, discusses the cross in the floor cracking countermeasures . After a review of relevant literature and calculate the new Village River Bridge under different beam bottom curve of the radial force value, draw beam bottom curve radial force values ​​influence on the span -13.5m ~ 13.5m wide bottom prestressing beam power of less than 1.7 is not recommended to take the parabola ; Walled River Bridge on the new use of an additional transverse rib reinforcement method , spatial model calculated the additional transverse ribs can significantly increase the lateral stiffness of the base plate , lower plate transverse tensile stress. Large area of ​​the radial force are arranged on both sides of a smaller lateral rib spacing force on the plate is advantageous . For different situations floor cracks , put forward the corresponding repair methods, combined with real bridge calculation and analysis , drawing on practical projects prove that this method is feasible.

Related Dissertations

  1. Kunming Transient Population Community Present Situation, Question and Countermeasure Preliminary Study,C924.25
  2. Yunnan Province, the private high ideological and political course of the situation and developing strategies,G633.2
  3. Relationship of the traditional Hmong culture and Hmong education,G759.2
  4. Study on Student Management of Rural Boarding School in China,G471
  5. A Study on University Science and Technology Innovation Environment Evaluation,G644
  6. Research on the Developing Situation and the Countermeasures of Guilin’s Outdoor Sports Clubs,G895
  7. Guangzhou High School Biology Teaching Effective Study Present Situation and Countermeasures,G633.91
  8. Practice and prospects of the Clean Development Mechanism in China,X38
  9. Research on Values of Post-90 Generation under the Influence of the Current Pop Culture,C913.5
  10. A Case Study of School-Based Curriculum Development of Guangzhou Vocational School of Tourism and Business,G712.3
  11. A Study on Construction of the Shanghai, Jinshan Agricultural Information,F320.1
  12. Research on the Development Situation and Countermeasure of Countryside Culture,D422.6
  13. Private College Students’ Party Construction Problems and Countermeasures,D267.6
  14. Research on Current Situation and Development of China’s E-Government,D630
  15. Study on Current Situation and Countermeasures to performative Children Basic Gymnastic in Shangdong Province,G613.7
  16. Survey on Current Situation of Middle School Tudents’ Exteracurricular Sports Activities in Sanming and Study on Its Development Countermeasures,G633.96
  17. Civilian-run Shandong Province Colleges and Universities Sports Teaching Pressent Situation and the Development Countermeasure Research,G807.4
  18. Civil Service Training and Assessment Study in China,D630.3
  19. Research on Talents Team in Hefei-Wuhu-Bengbu Based on Independent Innovation,C964.2
  20. On China’s College Students’ Current Employment Equity Research,G647.38
  21. The Dilemma and Countermeasures of the Secondary Vocational Education in China Rural Areas,G718.3

CLC: > Transportation > Road transport > Bridges and Culverts > Bridge Construction > Bridge maintenance, repair and remediation
© 2012 www.DissertationTopic.Net  Mobile