2012, Volume 14, Issue 10
Strategic Study of CAE >> 2012, Volume 14, Issue 10
Full scale model tests and nonlinear analysis of prestressed concretesimply supported box girders
School of Civil Engineering, Hunan University, Changsha 410082, China
Next Previous
Abstract
Full scale model tests were carried out on a 30 m span prestressed concrete box girder and a 20 m span prestressed concrete hollow slab. Failure models were prestressed reinforcement tensile failure and crushing of roof concrete, respectively. The ductility indexes of the box girder and hollow slab were 1.99, 1.23, respectively according to the energy viewpoint. Based on the horizontal section hypothesis, the nonlinear computation procedure was established using the limited banding law, and it could carry out the entire performance analysis including the unloading, mainly focusing on how to achieve the unloading curves computation through stress-strain, moment-curvature and load-displacement curves. Through the procedure, parameters that influence on the bearing capacity, deformation performance and ductility of the structures were analyzed. Those parameters were quantity of prestressed reinforcement and tension coefficients of prestressed reinforcement.
Keywords
prestressed concrete ; box girder ; full scale model test ; nonlinear analysis ; bearing capacity ; ductility
Figures
图1
图2
图3
图4
图5
图6
图7
图8
图9
图10
图11
图12
图13
图14
图15
图16
图17
图18
图19
图20
图21
图22
图23
References
[ 1 ] Miller R A. Aktan A E. Shahrooz B M. Destructive test ing of decommissioned concre te slab bridge[J] . Journal of Structural Engineering，1994，120（7）：2176-2198. link1
[ 2 ] 谢家全，吴赞平，华 斌，等，沪宁扩建桥梁极限承载能力实桥试验研究[J].现代交通技术，2006（5）：77-84. link1
[ 3 ] 张蓓，徐天昭，王复明，等，预应力混凝土空心板梁桥承载能力实桥试验研究[J].公路，2008（6）：1-5. link1
[ 4 ] 邹毅松，徐向茜.20m跨径后张预应力混凝土空心板梁变形的试验研究[J]. 重庆建筑大学学报，1999，21（2）：70-73. link1
[ 5 ] Cheng H T，Mohammed B S，Must apha K N.Experimental and a na lytical analysis of pretensioned inverted T-beam with circular weh openings[J].International Joumal Mec hanics and Material in Design，2009（5）：203-215.
[ 6 ] 李义强，彭正中，王新敏，基于ANSYS的钢筋混凝土简支梁极限承载力分析[J].石家庄铁道院学报，2006，19（1）：22-26. link1
[ 7 ] 张彬，李治国，基于ADINA的预应力箱梁承载能力非线性有限元分析[J].辽宁工程技术大学学报：自然科学版，2008，27（5增刊）：62-64. link1
[ 8 ] 吴光字，汪劲丰，项贻强，等，钢筋混凝土箱形梁极限承载力的计算[J].浙江大学学报：工学版，2007，41（1）：161-165. link1
[ 9 ] 吴晓涵，预应力混凝土结构非线性有限元分析[J].建筑结构学报，2007，28（4）：83-89. link1
[10] Paul N Roschke，Kevin R Pruski.Overoad and ultimate load behavior of posttensioned slab bridgeJ].Journal of Bridge Engineering，2000，5（2）：148-155. link1
[11] Deng Linzhong，Michel Ghosn，Ales Znidaric，et al.Nonlinear flexural behavior of prestressed conc rete girder bridges[J].Jour-nal of Bridge Engineering，2001，6（4）：276-284. link1
[12] 薛 刚，郭晓燕，钢筋混凝土梁抗弯刚度非线性全过程分析[J]，内蒙古科技大学学报，2007，26（3）：250-252. link1
[13] Naaman A E，Jeong SM.Stmctural ducti lity of concre te beams prestresed with FRP tendons[C]//Nonmetallic（FRP）Rein-force me nt for Concrete Structures.Quebec，1995：379-386.
[14] 吕西林，钢筋混凝土结构非线性理论与应用[M].上海：同济大学出版社，1997.
[15] 过镇海，时旭东，钢筋混凝土原理和分析[M].北京：清华大学出版社，2003.
[16] Gnace NF，Soliman A K，Abdel SG，et al.Behavior and ductil-ity of simple and continuous FRP reinforced beams[J].Joumal of Composites for Construc tion，1998，2（4）：186-194. link1
京公网安备 11010502051620号
