[1]金继伟..下穿既有铁路大跨度架空顶进箱涵的设计与施工关键技术[J].郑州大学学报(工学版),2012,33(03):28-32.[doi:10.3969/j.issn.1671-6833.2012.03.007]
　JIN Jiwei.Key Technique in the Design and Construction of Large Span OverheadJacking Culvert Beneath the Existing Railway[J].Journal of Zhengzhou University (Engineering Science),2012,33(03):28-32.[doi:10.3969/j.issn.1671-6833.2012.03.007]
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下穿既有铁路大跨度架空顶进箱涵的设计与施工关键技术()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
33
期数:
2012年03期
页码:
28-32
栏目:
出版日期:
2012-05-10

文章信息/Info

Title:
Key Technique in the Design and Construction of Large Span OverheadJacking Culvert Beneath the Existing Railway
作者:
金继伟.
河南省交通规划勘察设计院有限责任公司,河南郑州,450052
Author(s):
JIN Jiwei
Henan Provincisl Communication Pianning, Survey & Design institute Co, Lad, , 2hengzhou 450052, China
关键词:
下穿既有铁路;  架空顶进;  设计;  施工技术
Keywords:
beneath the existing railway;  overhead jacking culvert;  design;  construction technique
分类号:
U448.27
DOI:
10.3969/j.issn.1671-6833.2012.03.007
摘要:
高速公路穿越既有铁路时,对于上覆填土较低大跨度斜交顶推箱涵的设计和施工始终是一个难点.结合洛三高速公路改扩建工程渑陈立交桥的工程,根据其上覆填土较低的特点,采用了架空顶进的方案.该方案针对铁道线路架空安全可靠性要求高、施工过程中不间断铁路行车等特点进行了设计,系统地对线路加固方案中的便梁支墩挖孔桩的验算、顶进设计中的顶力计算、顶进设备、钢轨桩后背设计、施工时的施工条件、顶进作业工作顺序、施工注意事项等进行了详细阐述,解决了下穿既有铁路大跨度架空顶进箱涵的设计及施工关键技术,为同类工程提供了理论基础和工程实例,为解决上覆填土低的大跨度顶推箱涵提供了重要的技术支撑.
Abstract:
The design and construction of large-span overhead jacking culvert beneath the existing railway withlower filing remains a technical problem, This paper denls with the scheme of overhead jacking which is udopted by Mianchi overpass of the extension project of Luosan highway. it elaborates a series of important procedures, such as the beam pier pile checking, jacking force calculation, jacking equipments, rail pile backdesign and the construction conditions etc. . This project therefore solves the technical problem of the key technology concering the design and construction of large-span overhead jacking culvert beneath the existing railway, It provides theoretical foundation and project practice for similar type of projects and offers significanttechnological support for large-span overhead jacking culvert.
更新日期/Last Update: 1900-01-01