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Charpy bridge deck continuous structure performance comparison study

Author: ShenQingChuan
Tutor: ShengXingWang
School: Central South University
Course: Civil Engineering
Keywords: Simple Beam Bridge Deck continuous Finite Element Concrete Nonlinear
CLC: U443.31
Type: Master's thesis
Year: 2011
Downloads: 73
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Abstract

When a large number of our highway Charpy bridge deck continuous structure just fit deck continuous structure with drawbars continuous deck structure and its variants , on the one hand , the designers during the bridge design , how and Why the lack of theoretical basis , than a lack of relevant theoretical literature , on the other hand , part of one practical engineering , continuous deck structure is also more easily damaged , causing a continuous function lost deck irregularity and Bump phenomenon , increases the amount of maintenance. To solve these problems , and the two most common deck continuous structure, a theoretical analysis of the completed work and the main conclusions : 1 . Summarizes deck continuous tectonic research status , a detailed analysis of the bridge the surface continuous tectonic destruction ; 2 . use of the analytic method , the automotive braking force , temperature and load under the deck continuous structure calculation of maximum tensile stress is derived ; based on linear elastic theory , continuous cross 25m deck Charpy T beam engineering background , with large finite element program , to establish the the deck continuous structure refinement model , analysis of the calculation of the different forms of the bridge deck consecutive constructor in the car live load , ambient temperature changes , braking force and its load combination under the stress condition ; established based on elastic-plastic theory of nonlinear finite element model is used to analyze and compare different deck continuous state of tectonic stress loading history and crack state ; 5 . analysis showed that : 1 ) two deck consecutive constructor in the load combination under soon enter the plastic state and then cracks , the universal deck continuous structure is difficult to avoid cracking , it is with a crack constructor . 2 ) Rod - deck continuous tectonic tensile stress in the loading process , the cracks carried out significantly better than just pick - deck continuous construct . 6 According to the theoretical analysis proposed deck continuous the structure performance improvement measures . The paper concludes reference for design.

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CLC: > Transportation > Road transport > Bridges and Culverts > Bridges constructed > Superstructure > Deck
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