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[1]李庶林*,李 凯,黄玉仁,等.管棚保护下框架桥顶进工程高程控制分析[J].厦门大学学报(自然科学版),2018,57(01):144-148.[doi:10.6043/j.issn.0438-0479.201705030]
 LI Shulin*,LI Kai,HUANG Yuren,et al.Analyses on Elevation Control of Bridge Shield Tunneling Project[J].Journal of Xiamen University(Natural Science),2018,57(01):144-148.[doi:10.6043/j.issn.0438-0479.201705030]
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管棚保护下框架桥顶进工程高程控制分析(PDF/HTML)
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《厦门大学学报(自然科学版)》[ISSN:0438-0479/CN:35-1070/N]

卷:
57卷
期数:
2018年01期
页码:
144-148
栏目:
研究论文
出版日期:
2018-01-26

文章信息/Info

Title:
Analyses on Elevation Control of Bridge Shield Tunneling Project
文章编号:
0438-0479(2018)01-0144-05
作者:
李庶林1*李 凯1黄玉仁12陈东霞1张 昱1
1.厦门大学建筑与土木工程学院,福建 厦门 361005; 2.中铁二十四局福州公司,福建 福州 350013
Author(s):
LI Shulin1*LI Kai1HUANG Yuren12CHEN Dongxia1ZHANG Yu1
1.School of Architecture and Civil Engineering,Xiamen 361005,China; 2.China Railway 24 Bureau of Fuzhou,Fuzhou 350013,China
关键词:
框架桥 管棚 桥式盾构 Winkler弹性地基梁
Keywords:
box culvert tube shed bridge shield Winkler elastic foundation beam
分类号:
U 455.47
DOI:
10.6043/j.issn.0438-0479.201705030
文献标志码:
A
摘要:
大直径管棚保护下直接顶进预制箱涵技术是近年来国内发展起来的一种全新的施工技术,但其难度大,理论发展不完善,可借鉴的经验少.依托南昌市新龙岗大道下穿向莆铁路工程,根据实际工程情况建立力学分析模型,计算框架桥下钢管的受力,并根据钢管的受力情况假定钢管为Winkler弹性地基梁,运用弹性地基梁理论建立钢管挠曲微分方程并求解该微分方程,从而计算出框架桥顶进过程中的钢管挠曲变形,进而确定顶进过程中框架桥高程偏差情况.理论分析表明,底排管棚的支撑和引导作用有助于框架桥推进,并能有效遏制框架桥“栽头”和“抬头”现象,对于现场工程施工具有很好的参考价值.
Abstract:
The direct jacking technology under the protection of pipe shed is very strict to the control of subgrade deformation,and there is little related research on the theories at home and abroad.Based on the actual engineering situation,the mechanics analysis model is established to calculate the force of the steel pipe under the frame bridge.According to the stress condition of the steel pipe,the steel pipe is assumed to be the Winkler elastic foundation beam.Based on the beam theory,the differential equation of steel pipe is established,and which is solved to calculate the deflection deformation of the steel pipe during the jacking process of the frame bridge,and then the height deviation of the frame bridge during the jacking process is determined.The theoretical analysis shows that the support and guidance of the bottom pipe shed contribute to the advance of the frame bridge and can effectively curb the phenomenon of "sink" and "rise" of the frame bridge.During the process of frame bridge advancement,the control about the phenomenon of "rise" very important.With the increase of the length of the frame bridge,it can gradually curb the the phenomenon of the "rise" of the frame bridge.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-05-12 录用日期:2017-07-17
基金项目:福建省自然科学基金(2014J01208)
*通信作者:xmuleek@qq.com
更新日期/Last Update: 1900-01-01