Flexural Bearing Capacity Test study for Impacted Reinforced Concrete Beams

被引：0

作者：

Liu X. ^{[1
]}

Wang G. ^{[2
]}

Chen C. ^{[1
]}

Chen W. ^{[1
]}

机构：

[1] School of Civil Engineering and Architecture, Changsha University of Science & Technology, Changsha

[2] College of Civil Engineering and Architecture, Hunan institute of Science &Technology, Yueyang

来源：

Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2019年 / 27卷 / 05期

关键词：

Bridge engineering; Damaged beam; Experimental researches; Truck-bridge collision; Ultimate bearing capacity;

D O I：

10.16058/j.issn.1005-0930.2019.05.008

中图分类号：

学科分类号：

摘要：

Both theoretical analyses and experimental researches are carried out to obtain flexural bearing capacity of the main girders after the superstructure of a reinforced concrete bridge was collided by an ultra-high vehicle. Two girders were dismantled from the accident bridge (one with the most serious collision damage and the other without obvious exterior damage).Their ultimate flexural bearing capacities were respectively calculated by nonlinear finite element method. The experimental scheme was designed according to the bending failure mode of the normal section. Based on the ultimate bearing capacities by theoretical calculation, maximum test load is estimated and the graded load is determined. The test by step-by-step loading reveals the full-process characteristics and failure modes of the collided reinforced concrete beams. The experimental results show that the break of the normal section of the impacted beam begins at the damaged location, and only the damage degree of the components is taken into account while the short-term bending capacity is being calculated. Based on the current Code for Design of Reinforced Concrete and Prestressed Highway Bridges and Culverts(JTG D62-2004), the formulas for the bearing capacity of the damaged beam and its analysis results are presented by introducing the damage coefficient of the collided beams. The formulas and test analysis results can meet the demand of the calculation of the normal section bearing capacity of the collided reinforced concrete beam. © 2019, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.

引用

页码：1033 / 1041

页数：8

共 20 条

[11] Liu J., Experimental study on residential bearing capacity of RC short column under impact damage, (2014)
[12] Huang T., Research on mechanical property of concrete with impact damage, (2013)
[13] Bi C., Study on bearing capacity and damage evaluation of bridge with collision damage caused by vehicle, (2012)
[14] Nour A., Massicotte B., Yildiz E., Et al., Finite element modeling of concrete structures reinforced with internal and external fibre-reinforced polymers, Canadian Journal of Civil Engineering, 34, 3, pp. 340-354, (2007)
[15] Zhang H., The method of finite-element analyzing bridge structure's limit bearing capacity for concrete structure, (2005)
[16] Xu W., Experimental research and analysis on load-carrying capacity of the existing prestressed concrete girder bridge, (2006)
[17] Shu G., Shang X., Study on evaluation of ultimate bearing capacity of bridge girder based on solid failure test, Highway, 7, pp. 54-59, (2010)
[18] Zhu B., The Finite Element Method, (2009)
[19] Hibbett K.-S., ABAQUS/standard: User's Manual, (1998)
[20] Zhang X., Cai Z., Xu S., Practical design approach for calculating flexural capacity of steel reinforced ultra-high toughness cementitious, Journal of Basic Science and Engineering, 21, 6, pp. 1103-1115, (2013)

← 1 2 →