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压力隧洞新型预应力混凝土衬砌技术模拟试验研究 预览

Simulation experiment of a new technology of pre-stressed concrete lining in pressure tunnel
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摘要 在现有压力隧洞预应力混凝土衬砌技术的基础上,提出了基于圆环形扁千斤顶技术的新型预应力混凝土衬砌隧洞新概念。实现这个设想的关键设备是圆环形扁千斤顶,是一个用薄钢板制成的中空圆形压力囊,利用液压通过有限的径向位移对隧洞混凝土衬砌层外部施加均布压应力。室内模拟试验证明,采用薄钢板制作的圆环形扁千斤顶可以通过灌浆或注水对衬砌结构施加预应力,衬砌结构环向预压应力与注水压力呈线性关系,与理论结果一致。 Based on the existing technology of pre-stressed concrete pressure tunnel lining, a new technolo- gy of pre-stressed concrete lining technology with ring flat jack is put forward. The key equipment to imple- ment this idea is a ring shape flat jack, which is made of thin steel as hollow circular pressure bag, and which can impose uniform compressive stress of tunnel concrete lining layer through radial displacement. From the simulation experiment, it is proved that circular flat jack made by thin steel plate can apply pre-stress on the lining structure through grouting or injection, and the circumferential pre-compression stress of the lining structure is linear with the injection pressure, which is consistent with the theoretical re- suits.
作者 黄昊 刘致彬 岳跃真 郝巨涛 HUANG Hao, LIU Zhibin, YUE Yuezhen, HAO Jutao ( 1. State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, Beijing 100038, China; 2. China Institute of Water Resources and Hydropower Research, Beijing 100038, China)
出处 《中国水利水电科学研究院学报》 北大核心 2015年第1期14-19,共6页 Journal of China Institute of Water Resources and Hydropower Research
基金 中国水利水电科学研究院科研专项(结集1366)
关键词 压力隧洞 预应力混凝土衬砌 模拟试验 扁千斤顶 pressure tunnel pre-stressed concrete lining simulation experiment fiat jack
作者简介 黄吴(1982-),男,河南新野人,博士生,工程师,主要从事水工结构材料研究。E-mail:huangh@iwhr.com
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