Fatigue Test of Tensile Anchor Plates in Cable-Beam Anchorage Zones for Zhanjiang Gulf Bridge
-
摘要: 为评估湛江海湾大桥锚拉板式索梁锚固结构关键构造细节的疲劳性能,对该结构进行了足尺模型疲劳试验.为指导疲劳试验,了解结构受力特性,用通用有限元软件ANSYS对结构进行了分析.结果表明,锚拉板与锚拉筒之间的连接焊缝下端部应力集中明显,最大主拉应力出现在该区域;在设计疲劳荷载作用下,该结构关键构造细节处均未发现疲劳裂纹,结构疲劳性能满足设计要求.Abstract: In order to assess the fatigue performance of the key connection details of tensile anchor plates in cable-beam anchorage zones,a full-scale model fatigue test of the tensile anchor plates of Zhanjiang gulf bridge was conducted.ANSYS,a finite element software,was used to analyze the structural behavior to guide the fatigue test.The analysis and test results show that the concentration of stresses at the end of fillet welds between the tensile anchor plate and the tensile anchor tube is obvious,and the maximum principal tensile stress occurs in the stress concentration region.In addition,no fatigue cracks were found in the test under the condition of the fatigue load designed.This shows that the fatigue life of these connection details can satisfy the design requirement.
-
Key words:
- tensile anchor plate /
- fatigue test /
- cable-beam anchorage
-
高宗余.青州闽江大桥结合梁斜拉桥设计[J].桥梁建设,2001(4):13-17.GAO Zongyu.Design of composite girder cable-stayed bridge over Minjiang river at Qingzhou[J].Bridge Construction,2001(4):13-17.[2] 侯文崎,叶梅新.结合梁斜拉桥锚拉板结构研究[J].钢结构,2002,17(2):23-27.HOU Wenqi,YE Meixin.Study of tensile anchor plate structure of composite cable-stayed bridge[J].Steel Construction,2002,17(2):23-27.[3] 史永吉,王辉,方兴,等.钢材层状撕裂及抗层状撕裂焊接接头的设计[J].中国铁道科学,2005,26(11):69-74.SHI Yongji,WANG Hui,FANG Xing,et al.Lamellar tearing of steel and the welding joint design to avoid lamellar tearing[J].China Railway Science,2005,26(11):69-74.[4] 陈开利.大跨度斜拉桥斜拉索锚固结构的试验研究[J].世界桥梁,2004(1):29-37.CHEN Kaili.Studies on the test for anchorage zones of cable-stayed bridge[J].World Bridges,2004(1):29-37.[5] 刘庆宽,王新敏,强士中.南京长江二桥南汊桥索梁锚固足尺模型试验研究[J].土木工程学报,2001,34(2):50-54.LIU Qingkuan,WANG Xinmin,QIANG Shizhong.Full scale model test on anchorage zone of the second Yangtze river bridge at Nanjing[J].China Civil Engineering Journal,2001,34(2):50-54.[6] 中华人民共和国交通部.JTJ025-86公路桥涵钢结构及木结构设计规范[S].北京:人民交通出版社,1998.[7] 英国标准学会.BS5400钢桥、混凝土桥及结合桥[S].成都:西南交通大学出版社,1987.[8] 美国各州公路和运输工作者协会.美国公路桥梁设计规范——荷载与抗力系数设计法(1994)[S].辛济平,万国朝,张文,等译.北京:人民交通出版社,1998.
点击查看大图
计量
- 文章访问数: 1570
- HTML全文浏览量: 66
- PDF下载量: 308
- 被引次数: 0