[1]张浩,石名磊,胡伍生,等.互通区跨线桥邻近路基墩柱偏移事故分析[J].东南大学学报(自然科学版),2013,43(3):617-623.[doi:10.3969/j.issn.1001-0505.2013.03.031]
 Zhang Hao,Shi Minglei,Hu Wusheng,et al.Analysis of sloping pier nearby embankment of overpass bridge in interchange[J].Journal of Southeast University (Natural Science Edition),2013,43(3):617-623.[doi:10.3969/j.issn.1001-0505.2013.03.031]
点击复制

互通区跨线桥邻近路基墩柱偏移事故分析()
分享到:

《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
43
期数:
2013年第3期
页码:
617-623
栏目:
土木工程
出版日期:
2013-05-20

文章信息/Info

Title:
Analysis of sloping pier nearby embankment of overpass bridge in interchange
作者:
张浩1石名磊1胡伍生1姜在田2
1东南大学交通学院, 南京 210096; 2江苏省交通规划设计院, 南京 210005
Author(s):
Zhang Hao1 Shi Minglei1 Hu Wusheng1 Jiang Zaitian2
1School of Transportation, Southeast University, Nanjing 210096, China
2Jiangsu Provincial Communication Planning and Design Institute, Nanjing 210005, China
关键词:
跨线桥 侧向位移 纠偏 软土 桩基
Keywords:
overpass bridge lateral displacement rectification soft clay pile foundation
分类号:
TU473
DOI:
10.3969/j.issn.1001-0505.2013.03.031
摘要:
结合工程实例分析了跨线桥墩柱偏移的原因,提出了偏移墩柱的处治措施. 首先,通过现场实测揭示了邻近路基墩柱的变位性状,采用低应变动测评测了桥墩桩身损伤情况,并基于场区地基软土性状分析,指出邻近路基堆载是引起墩柱偏移的根本原因. 然后,基于应变楔分析模型,提出了一种以桩顶位移为计算控制条件的桩身受力分析方法,并通过工程实例验证了该方法的合理性. 最后,根据各桥墩支座偏位量情况,结合桩身受力验算与Bozozuk分析评价标准,对支座位移不大于50 mm的墩柱采用平衡堆载的处治方法;对支座位移大于50 mm的墩柱采用桩基顶推联合墩柱牵引的纠偏处治措施. 结果表明,处治后墩柱支座偏移量分别降低了10.7%~43.7%和79.7%~100%,处治效果良好,对类似工程具有借鉴意义.
Abstract:
Based on an engineering example, the reasons of the sloping pier of an overpass bridge and the treatment method for the sloping pier were analyzed. First, the sloping condition of the bridge pier was measured by field monitoring, and the damaged position of pile was clarified by low strain dynamic test. On the basis of characteristic analysis of soft soils, a conclusion that neighboring embankment load was the root cause for the displacement of the bridge pier was made. Then, a displacement-based calculation method of the sloping pile was described based on the strain wedge model(SWM), and its rationality was verified with an example. Finally, according to the statistics of bearings lateral displacement, by calculating of pile stress and using analytical standard set by Bozozuk, the treatment method of applying surcharge load was carried out for the piers with bearings displacement less than 50mm, and the treatment method of pushing combined traction was used for the piers with bearings displacement more than 50 mm. The results show that after rectifying the bearings displacements are decreased by about 10.7% to 43.7% and 79.7% to 100% respectively, indicating that the treatment methods can achieve desired results and can be used for reference.

参考文献/References:

[1] Tavenas F, Mieussnes C, Bourges F. Lateral displacements in clay foundations under embankment[J]. Canadian Geotechnical Journal, 1979,16(2):32-55.
[2] 杨敏,朱碧堂,陈福全. 堆载引起某厂房坍塌事故的初步分析[J].岩土工程学报,2002,24(4): 446-450.
  Yang Min, Zhu Bitang, Chen Fuquan. Pilot study on collapse of an industrial building due to adjacent surcharge loads[J]. Chinese Journal of Geotechnical Engineering, 2002,24(4): 446-450.(in Chinese)
[3] 冯忠居,张永清,李晋. 堆载引起桥梁墩台与基础的偏移及防治技术研究[J].中国公路学报,2004,17(3):74-77.
  Feng Zhongju, Zhang Yongqing, Li Jin. Study of displacement of bridge pier and abutment foundation caused by earth piling load and its prevention technique [J]. China Journal of Highway and Transport, 2004,17(3): 74-77.(in Chinese)
[4] Ito T, Matsui T. Methods to estimate lateral force acting on stabilizing piles[J]. Soils and Foundations, 1982, 15(4): 43-59.
[5] 易笃韬,邵旭东,李立峰,等. 软土地基上桥台桩基受力算法研究[J].中国公路学报,2007,20(5):59-64.
  Yi Dutao, Shao Xudong, Li Lifeng, et al. Research on algorithm for mechanics of abutment pile foundation on soft ground[J]. China Journal of Highway and Transport, 2007, 20(5):59-64.(in Chinese)
[6] Poulos H G, Chen L T. Pile response due to excavation-induced lateral soil movement [J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(2): 94-99.
[7] Goh A T C, Teh C I, Wang K S. Analysis of piles subjected to embankment induced lateral soil movements[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123(9):792-801.
[8] California Department of Transportation. Analysis of laterally loaded long or intermediate drilled shafts of small or large diameter in layered soils [EB/OL].(2008-12)[2012-03-25].http://www.dot.ca.gov.
[9] Ashour M, Ardalan H. Employment of the P-multiplier in pile-group analysis [J]. Journal of Bridge Engineering, 2011,16(5):612-623.
[10] 中华人民共和国交通部. JTJ 017—96 公路软土地基路堤设计与施工技术规范[S].北京:人民交通出版社,1996.
[11] 赵九斋.连云港软土路基沉降研究[J]. 岩土工程学报, 2000,22(6):643-649.
  Zhao Jiuzhai. Research on settlement of soft clay ground in Lianyungang[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(6): 643-649.(in Chinese)
[12] 孙钧. 岩土材料流变及其工程应用[M].北京:中国建筑工业出版社,1999:83-94.
[13] Ashour M, Ardalan H. Analysis of pile stabilized slopes based on soil-pile interaction[J]. Computers and Geotechnics, 2012,39(1): 85-97.
[14] Smethurst J A, Powrie W. Monitoring and analysis of the bending behavior of discrete piles used to stabilise a railway embankment[J]. Géotechnique, 2007, 57(8): 663-677.
[15] 中华人民共和国住房和城乡建设部. GB 50010—2010 混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.
[16] 中华人民共和国交通部. JT/T 663—2006 公路桥梁板式橡胶支座规格系列[S].北京:人民交通出版社,2007.

备注/Memo

备注/Memo:
作者简介: 张浩(1985—),男,博士生;石名磊(联系人),男,博士,教授,mingleish@163.com.
引文格式: 张浩,石名磊,胡伍生,等.互通区跨线桥邻近路基墩柱偏移事故分析[J].东南大学学报:自然科学版,2013,43(3):617-623. [doi:10.3969/j.issn.1001-0505.2013.03.031]
更新日期/Last Update: 2013-05-20