Performance-Based Damage Analysis for PC Continuous Rigid Frame Bridges
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摘要: 为探讨PC(预应力混凝土)连续刚构桥开裂及下挠的原因,提出了基于结构性能的损伤分析方法.该方法立足于结构性能的客观表象,把对可能造成损伤的诸多因素对结构性能水平的影响分析作为主要手段;通过对大量理论计算与试验数据的对比分析,以基于实桥检测和荷载试验的性能水平参数作为评判依据,找出造成损伤的因素及其达到的程度,同时获得损伤桥梁较为真实的性能水平,作为可靠性评估和加固设计的依据.通过对一座跨径160 m的PC连续刚构桥基于性能的损伤分析,结果表明:用该方法,结构挠度的校验系数可达0.9.Abstract: In order to find out the causes of the cracking and deflection of PC(prestressed concrete) continuous rigid frame bridges,a damage analysis method based on structure performance was proposed.In this method,the objective manifestations of structure performances are considered as the focus of attention,and the analysis of damage factors for structure performances is as the primary means.By comparing a large number of theoretical and test data and using load test data as a judgment basis to identify damage elements and damage degree,a more realistic performance level of a damaged bridge is obtained,and this performance level can be used as the basis of reliability evaluation and strengthening design.The damage analysis of a PC rigid frame bridge with a span of 160 m,as an example,shows that with the proposed method,the check coefficient of deflection can reach to 0.9.
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楼庄鸿.大跨径梁式桥的主要病害[J].公路交通科技,2006,23(3):84-87.LOU Zhuanghoug.Main faults in large span beam bridges[J].Journal of Highway and Transportation Research and Development,2006,23(3):84-87.[2] 钟新谷,曾庆元.预应力混凝土连续箱梁桥裂缝防治与研究报告[R].长沙:中南大学士木建筑学院,2001.[3] 彭向荣.变截面预应力混凝上箱梁桥底板纵向裂缝防治措施[J].中南公路工程,1999,24(4):42-43.PENG Xiangrong.Measures for control longitudinal cracking in variable section PC box girder bridge bottom plate[J].Central South Highway Engineering,1999,24(4):4243.[4] 李军.连续桥梁预应力箱梁腹板裂缝成因浅析[J].华东公路,2000(3):26-29.LI Jun.Cause analysis of cracking in PC box girder web of continuous bridge[J].East China Highway,2000(3):26-29.[5] 朱汉华,陈孟冲,袁迎捷,等.预应力混凝土连续箱梁桥裂缝分析与防治[M].北京:人民交通出版社,2006:5-26.[6] 龙佩恒.预应力混凝土箱梁桥开裂的数值分析方法[D].上海:同济大学土木工程学院,2005.[7] 方志,汪剑.预应力混凝土箱梁桥竖向预应力损失的实测与分析[J].土木工程学报,2006,39(5):78-84.FANG Zhi,WANG Jian.Vertical prestressing loss in the box girder of long-span PC continuous bridges[J].China Civil Engineering Journal,2006,39(5):78-84.[8] 周履,蔡登山.关于PC桥梁的混凝土应力限值的讨论[J].国外桥梁,2001(2):65-71.ZHOU Lü,CAI Dengshan.Discusses about concrete stress limit value[J].Foreign Bridges,2001(2):65-71.[9] 王会永.连续刚构桥箱梁腹板开裂成因分析及应力限值研究[D].长沙:长沙理工大学土木与建筑学院,2005.[10] International Code Council(ICC).ICC-2003 Performance code for buildings and facilities[S].Madrid:ICC,2003.[11] Australia Building Code Board.BCA-1996 Building code of Australia[S].Canberra:Australia Images Publishing Company Group,1996.[12] 程耿东.基于功能的结构抗震设计中一些问题的探讨[J].建筑结构学报,2000,21(1):5-11.CHENG Gengdong.Some key problems on performance-based seismic design[J].Journal of Building Structures,2000,21(1):5-11.[13] 中华人民共和国交通部.JTJ 023-85公路钢筋混凝土及预应力混凝土桥涵设计规范[S].北京:人民交通出版社,1985.[14] 中华人民共和国交通部.JTG D60-2004公路桥涵设计通用规范[S].北京:人民交通出版社,2004. -
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