硬岩隧道纯钢纤维混凝土管片应用

doi:10.6040/j.issn.1672-3961.0.2020.085

山东大学学报 (工学版) ›› 2020, Vol. 50 ›› Issue (5): 44-49.doi: 10.6040/j.issn.1672-3961.0.2020.085

• • 上一篇

硬岩隧道纯钢纤维混凝土管片应用

徐振¹,李德明^2*,王彬¹,詹谷益²,张世杰²

1.青岛市地铁一号线有限公司, 山东青岛 266044;2.中铁科学研究院有限公司, 四川成都 610032

发布日期:2020-10-19
作者简介:徐振(1978— ),男,山东青岛人,高级工程师,主要研究方向为地铁工程. E-mail:sdxuzhen@163.com. *通信作者简介:李德明(1980— ),男,四川成都人,高级工程师,主要研究方向为城市轨道交通设计. E-mail:ldm80@foxmail.com
基金资助:
青岛市地铁1号线工程科研课题项目

Application of pure steel fiber concrete segment in hard rock tunnel

XU Zhen¹, LI Deming^2*, WANG Bin¹, ZHAN Guyi², ZHANG Shijie²

1. Qingdao Metro Line 1 Co., Ltd., Qingdao 266044, Shandong, China;
2. China Railway Academy Co., Ltd., Chengdu 610032, Sichuan, China

Published:2020-10-19

摘要/Abstract

摘要： 在前期钢纤维混凝土材料性能试验、管片力学性能试验的基础上,采用FLAC 3D对硬岩隧道纯钢纤维混凝土管片施工进行数值模拟,并在青岛市地铁1号线开展现场试验。结果表明,与普通管片相比,纯钢纤维混凝土管片具有更好的抗裂性能,可有效减少裂缝的产生,减少约60%缺棱掉角现象;采用纯钢纤维混凝土管片可更为有效的控制地表沉降、侧壁收敛、拱顶沉降;硬岩隧道一般工况下管片处于全截面受压状态,无需配置受拉钢筋,钢纤维完全取代受力钢筋是切实可行的。

关键词: TBM管片, 钢纤维混凝土, 数值分析, 现场试验, 受力及沉降分析

Abstract: Based on the previous steel fiber reinforced concrete material property test and segment mechanical performance test, FLAC 3D was used to numerically simulate steel fiber reinforced concrete segments in hard rock tunnels, and field tests were conducted on Qingdao Metro Line 1 to test the segments. The results showed that the pure steel fiber reinforced concrete segment had better crack resistance than the ordinary segment, which could effectively reduce the cracks and about 60% edge loss and angle drop. Using pure steel fiber concrete segment could control the surface settlement, the convergence and the vault settlement more efficiently. Under normal conditions of hard rock tunnels, the segments were under full-section compression, and without configuring tensile steel, it was feasible to completely replace the steel bars by steel fiber.

Key words: TBM segment, steel fiber reinforced concrete, numerical analysis, field test, stress and settlement analysis

中图分类号:

TU933.4

徐振,李德明,王彬,詹谷益,张世杰. 硬岩隧道纯钢纤维混凝土管片应用[J]. 山东大学学报 (工学版), 2020, 50(5): 44-49.

XU Zhen, LI Deming, WANG Bin, ZHAN Guyi, ZHANG Shijie. Application of pure steel fiber concrete segment in hard rock tunnel[J]. Journal of Shandong University(Engineering Science), 2020, 50(5): 44-49.

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硬岩隧道纯钢纤维混凝土管片应用

Application of pure steel fiber concrete segment in hard rock tunnel

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