地铁工程暗埋工作井内钢筋混凝土密封舱室盾构始发技术
王社江张建鹏
Shield-driven Initiation Technology of Reinforced Concrete Sealed Cabin in the Concealed Working Well of Metro Engineering
WANG ShejiangZHANG Jianpeng
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作者信息:苏州市轨道交通集团有限公司，215006，苏州
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Affiliation:Suzhou Rail Transit Group Co., Ltd., 215006, Suzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2020.08.040
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中图分类号/CLCN:U455.43
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栏目/Col:应用技术
摘要:
在城市轨道交通工程建设中，盾构始发端因端头井地层无法加固或加固效果不理想，且始发空间有限，使传统钢套筒密封始发技术的使用受到制约。结合钢筋混凝土结构施工特点，为平衡盾构掘进掌子面的水土压力，设计了具备钢套筒功能的新型盾构始发装置。该装置工程实践证明：钢筋混凝土密封舱室技术适用性强，盾构始发效果好。该装置的成功应用为处于富水粉砂地层内、端头井后土体加固不理想环境下的盾构机顺利始发施工提供了新思路。
Abstracts:
In urban rail transit engineering projects, the application of conventional steel sleeve sealing initiation technology is restricted because of the unsatisfactory reinforcement effect in the shield end well stratum and the limited initiating space at the shield-driven initiation part. According to the construction characteristics of reinforced concrete structure, to balance the water-soil pressure of shield tunneling face, a new type of shield-driven initiation device is designed with the functions of steel sleeve. Engineering practice proves that the reinforced concrete sealed cabin has strong technical applicability and the performance of shield-driven initiation is excellent. The successful application of this device provides a new idea for the smooth launching of the shield machine in water-rich silt stratum and in the condition of substandard soil reinforcement behind the shield end well.
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