[1]陈福江,马建林,赵丹.桥梁群桩基础压力注浆静置时间预测试验[J].西安建筑科技大学学报:自然科学版,2014,46(01):90-95.[doi:10.15986/j.1006-7930.2014.01.016]
　CHEN Fujiang,MA Jianlin,ZHAO Dan.Test on waiting-time prediction pressure grouting for bridge pile foundation[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(01):90-95.[doi:10.15986/j.1006-7930.2014.01.016]
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桥梁群桩基础压力注浆静置时间预测试验()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年01期
页码:
90-95
栏目:
出版日期:
2014-02-28

文章信息/Info

Title:
Test on waiting-time prediction pressure grouting for bridge pile foundation
文章编号:
1006-7930(2014)01-0090-06
作者:
陈福江; 马建林; 赵丹
(西南交通大学土木工程学院,四川 成都 610031)
Author(s):
CHEN Fujiang;  MA Jianlin;  ZHAO Dan
(School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China)
关键词:
高速铁路; 群桩基础; 静置时间; 压力注浆; 现场试验
Keywords:
high speed railway;  pile group foundation;  waiting time;  pressure grouting;  site test
分类号:
U238；TU473.1+4
DOI:
10.15986/j.1006-7930.2014.01.016
文献标志码:
A
摘要:
为了预测高速铁路桥梁群桩基础在压力注浆加固后的静置时间，提出无砟轨道铺设时间的合理建议．通过开展京沪高速铁路丹阳至昆山特大桥阳澄湖桥段群桩基础现场压力注浆试验，对试验段群桩基础架梁前后沉降全过程观测，得到近600 ｄ实测沉降数据，结合《京沪沉降评估细则》及《客运专线无砟轨道评估技术指南》关于沉降稳定的判别标准，将实测沉降与曲线拟合法预测沉降进行对比分析，预测出群桩基础的静置时间．预测结果表明：从架梁后起算，未注浆群桩基础静置时间约为55～100ｄ；桩侧注浆群桩基础静置时间约为50～90ｄ；桩端注浆群桩基础静置时间约为30～55ｄ．建议未注浆、桩侧注浆、桩端注浆群桩基础的无砟轨道铺设时间分别不宜少于架梁后100ｄ，90ｄ和60ｄ．
Abstract:
In order to predict the waiting time for the pile group foundation of the high-speed railway bridge by pressure grouting and strengthening, a reasonable advice of the time for the ballast less track laying is put forward. Through carrying out the field test for the pressure grouting in strengthening the pile group foundation on one section of the Danyang-Kunshan long-span Bridge of Yangcheng Lake on the Beijing-Shanghai high-speed railway and the whole sedimentation process observation of the test section, 600 days ’ measurement sedimentation data were obtained. By combining the criterions of steady subsidence of “Beijing-Shanghai Sedimentation Assessment Rules” with that of “the guideline of Evaluation Techniques to Unballasted Track on Passenger Dedicated Line”, the sedimentation data by actual measurement and the predicted data by curve fitting method were compared and analyzed. Then the waiting time of the pile foundation was predicted. The results show that after the girder erection, the waiting time of non-grouting pile group foundation is about 55 to 100 days; the waiting time of pile sides grouting is about 50 to 90 days; and the waiting time of pile bottom grouting is about 30 to 55 days. It is advisable that the waiting time of non-grouting, pile sides grouting and pile bottom grouting on the unballasted track should not be less than 100 days, 90 days and 60 days respective after girder erection.

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备注/Memo

备注/Memo:
基金项目：铁道部科技研究开发计划项目（2008G032-3）
收稿日期：2013-08-06 修改稿日期：2014-02-13
作者简介：陈福江（1981-），男，博士研究生，主要从事道路与铁道工程方面的研究．E-mail:chenfujiangxn@163.com
更新日期/Last Update: 2015-10-05