地铁声屏障项目施工方法优化研究
杨磊王丽晓
Study on Construction Methods Optimization for Subway Sound Barrier Project
YANG LeiWANG Lixiao
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作者信息:1.生态环境部城市轨道交通振动与噪声控制工程技术中心(筹)， 100071， 北京
2.北京九州一轨环境科技股份有限公司， 100071， 北京
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Affiliation:1.Engineering Technology Center of Urban Rail Transit Vibration and Noise Control, Ministry of Ecology and Environment (Preparation), 100071, Beijing, China
2.Beijing Jiu Zhou Yi Gui Environmental Science and Technology Co., Ltd., 100071, Beijing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007－869x.20241481
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中图分类号/CLCN:U231
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栏目/Col:土建工程
摘要:
［目的］地铁声屏障施工存在基础处理复杂、安装效率低、高空作业风险高等问题，导致工期延长、成本增加及质量隐患。为此，亟需优化施工方法以提升工程效率与安全性。［方法］针对基础处理，提出“过渡垫梁支座”技术，解决预埋螺栓错位问题，实现标准化安装；针对曲线段，优化钢柱截面并采用“平推式”安装工艺，结合“旋转平推式”改进确保屏体稳固；针对直线段，采用立面模块化预拼装与整体吊装技术；屋面体系通过“倒穿法”螺栓固定和模块化吊装，减少高空作业。［结果及结论］优化后，钢柱安装效率提升100%(40根/周期)，钢梁安装效率提高40%(10根/周期)，屏体高空作业量减少75%，且质量稳定性显著增强。优化方法有效解决了既有施工技术的不足，实现了标准化、模块化与高效化施工。
Abstracts:
［Objective］ The construction of subway sound barriers is characterized by complex foundation treatment, low installation efficiency and high risk of high-altitude operations, leading to extended construction period, higher costs and hidden quality risks. Therefore, it is urgent to optimize the construction method to improve the engineering efficiency and safety. ［Method］ For the foundation treatment, a “transition girder bearing” technology is proposed to solve the misalignment problem of embedded bolts and realize standardized installation; for curved sections, the cross-section of steel columns is optimized and the “push-flat” installation process is adopted, to ensure the solidity of the screen by combining with the “rotating push-flat” improvement; for straight sections, the facade modular pre-assembly and overall hoist technology is adopted; and the roofing system is fixed by bolts with “inverted penetration method” and modular hoisting, so as to reduce high-altitude operations. ［Result & Conclusion］ After optimization, the installation efficiency of steel columns increases by 100% (40 pieces/cycle), the installation efficiency of steel beams increases by 40% (10 pieces/cycle), the amount of aerial work on the screen body decreases by 75%, and the quality stability is significantly enhanced. The optimization method effectively solves the deficiencies of the existing construction technologies and realizes standardized, modularized and efficient construction.
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