Paper Title:
The Ultimate Bearing Capacity Analysis of P.C. Bridge Based on Material Performance Degradation
  Abstract

During the service process of a P.C. bridge, the mechanical properties of materials (including concrete and steel) will deteriorate, and eventually result in the decrease of ultimate bearing capacity. Considering it’s structural behavior, degenerate solid elements were used to set up a three-dimensional model. By taking prestressed reinforcement as a part of structure, the equivalent nodal load was provided to calculate the effect of tensioning bars. The T.L. method was adopted to consider the geometric nonlinear effect. The Ohtani & Chen model was used to simulate the concrete material nonlinear behavior, and for prestressed steel strand and common reinforced, linear hardening and ideal elastoplastic model were adopted respectively. A P.C. continuous rigid frame bridge was employed for the case study, on the basis of material performance deterioration, the ultimate bearing capacity analysis of P.C. bridge structure was carried out. The results show that material deterioration has great impact on ultimate load capacity of structure: the load factor on limit state dropped rapidly from 13.9085 at t=0a to 7.8265 at t=100a, the corresponding safe index decreased from 2.265 to 1.581, and brittle characteristics was aggravated at the same time.

  Info
Periodical
Advanced Materials Research (Volumes 163-167)
Edited by
Lijuan Li
Pages
3391-3400
DOI
10.4028/www.scientific.net/AMR.163-167.3391
Citation
P. F. Xue, D. L. Mao, J. F. Wang, "The Ultimate Bearing Capacity Analysis of P.C. Bridge Based on Material Performance Degradation", Advanced Materials Research, Vols. 163-167, pp. 3391-3400, 2011
Online since
December 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Katsuaki Furukawa
Abstract:As a retardation of fatigue crack propagation occur under two step loading such as high to low loading, it is difficult to predictt the...
231
Authors: Xiao Zheng, Ya Xin Zhang, Guo Xiang Lin, Zhi Xian Sun
Abstract:The experiments for stress—strain and confined pressing of granular peanuts by uniaxial pressing were carried out. The results show that...
20
Authors: Xiao Zheng, Ya Xin Zhang, Guo Xiang Lin, Zhi Xian Sun
Abstract:By using of Kuhn`s yield criterion, plasticity constitutive equations of extruded oilseeds in a closed cylinderical cell were developed. The...
235
Authors: Chang Hong Guo, Xiang Dong Liu, Shao Mei Fang
Chapter 7: Waste-to-Energy, Waste Management and Waste Disposal
Abstract:This paper studies the exact traveling wave solutions to a model for solid-solid phase transitions driven by configurational forces. The...
1694
Authors: Li Xiong Gu, Zhong Yong Xu, Zhi Fang Liu
Chapter 3: Reliability, Durability and Rehabilitation of Structures
Abstract:In this paper, the fracture toughness of materials, , effects on fatigue crack propagation that can be quantified using the dynamical...
1005