盾构刀盘系统界面载荷力学表征与近似计算模型

张茜; 蔡宗熙; 黄干云; 侯振德; 亢一澜; 郑琳

doi:10.6052/0459-1879-12-057

盾构刀盘系统界面载荷力学表征与近似计算模型

doi: 10.6052/0459-1879-12-057

1.
天津大学机械工程学院力学系, 天津 300072
2. 山西省万家寨引黄工程管理局, 太原 030000

基金项目: 国家自然科学基金(11127202)和国家重点基金研究发展计划(2007CB714000)资助项目.

详细信息

通讯作者:
亢一澜

中图分类号: O343.3,U451
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- 文章访问数: 1642
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- 被引次数: 0
出版历程
- 收稿日期: 2012-03-05
- 修回日期: 2012-07-24
- 刊出日期: 2012-09-18

MECHANICAL CHARACTERIZATION AND PREDICTING MODEL FOR CUTTERHEAD INTERFACE LOAD OF SHIELD MACHINE

1.
Mechanics Department, Tianjin University, Tianjin 300072, China
2. Wanjiazhai Yellow River Diversion Project Administration, Taiyuan 030000, China

Funds: The project was supported by the National Natural Science Foundation of China (11127202) and National Basic Research Program of China (2007CB714001).

摘要

摘要: 针对地下隧道施工重型盾构装备,提出了一种刀盘系统界面载荷的力学表征与近似计算方法.在刀盘系统与掘进界面岩土间相互作用的解耦分析基础上,引入岩土屈服破坏效应的影响,修正了掘进界面边缘区域应力集中的问题,给出了刀盘系统界面载荷沿半径方向非线性分布的规律.考虑到实际施工中的地质条件、掘进进尺、刀盘拓扑结构,以及地下埋深等因素对掘进载荷的影响,建立了刀盘系统推力与扭矩的综合分析与计算模型,实现了地质力学性能、装备掘进状态、装备结构特征3类关键因素与掘进载荷间相互影响规律的力学描述;结合天津地铁工程实例,分析与验证了界面载荷模型的有效性.
- 盾构 /
- 刀盘系统 /
- 界面载荷 /
- 解耦分析 /
- 屈服修正
Abstract: The paper presents a mechanical characterization and predicting model for the cutterhead interface load of shield machine.The interaction between the cutterhead and the soil on the excavation interface is decoupled.The geotechnical yield effect is considered to amend the stress concentration around the edge area on the interface.Then the normal and tangential stress distributions on the cutterhead are presented.In addition,a comprehensive consideration about the interface load with the contributions of the depth burial and the cutterhead topological structure is made.The present study establishes a predicting model of the thrust and the torque acting on the cutterhead interface with the influences of geological parameters,operating parameters,and structural parameters.The effectiveness of the proposed model is verified with a metro engineering instance in China.
- shield machine /
- cutterhead /
- interface load /
- decoupling analysis /
- yield modified

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参考文献(31)

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