基于响应面法的软岩隧道湿喷纤维混凝土支护结构可靠度分析

›› 2008, Vol. 29 ›› Issue (S1): 232-236.

基于响应面法的软岩隧道湿喷纤维混凝土支护结构可靠度分析

华渊¹，周太全¹，吕宝华²

1. 江南大学环境与土木工程学院，无锡 214122；2. 中铁19局集团第5工程有限公司，大连 116000

收稿日期:2008-07-24 出版日期:2008-11-11 发布日期:2016-04-15
作者简介:华渊，男，1960年生，院长，教授，主要从事桥梁与隧道工程、岩土力学等方面教学科研工作

Reliability analysis of wet-sprayed fiber reinforced concrete lining structure within soft and weak rock mass using response surface method

HUA Yuan¹, ZHOU Tai-quan¹, LÜ Bao-hua²

1. College of Environmental and Civil Engineering, Jiangnan University, Wuxi 214122, China; 2. No.5 Engineering Department, China Railway Construction Group No.19 Company, Dalian 116000, China

Received:2008-07-24 Online:2008-11-11 Published:2016-04-15

摘要/Abstract

摘要： 由于湿喷纤维混凝土支护结构物理、力学参数和喷层厚度的离散性及混凝土强度破坏准则难以用支护材料参数显式表达，对该类隧道支护结构进行可靠度分析十分困难，提出采用响应面方法计算湿喷纤维混凝土支护结构的可靠度方法，并给出了计算流程，其中围岩-支护结构的确定性分析采用非线性有限元方法，可靠度分析采用2次响应面法。以赣州－龙岩铁路金华山软岩隧道湿喷纤维混凝土支护结构为研究对象，对该支护结构的可靠度进行分析与计算。分析结果表明，金华山隧道湿喷纤维混凝土支护结构可靠度指标高，处于安全状态。

关键词: 隧道支护结构, 纤维混凝土, 可靠度分析, 响应面法, 非线性有限元

Abstract: Due to the diversity of the wet-sprayed fiber reinforced concrete lining structure physico-mechanical parameters and the difficulty of the explicit expression of limit state failure function for concrete strength, the reliability analysis for the wet-sprayed concrete lining structure is difficult to perform. The response surface method is proposed to calculate the reliability of the wet-sprayed concrete lining structure. The calculation process is given.In the determination calculation of the rockmass and tunnel lining structure, the nonlinear finite element method is used while the second order response method is used in the reliability analysis. As a case study, the wet-sprayed fiber reinforced concrete tunnel lining structure for Ganzhou-Longyan Jinhuashan Railway tunnel in soft and weak rockmass, the reliability analysis for the tunnel lining structure is performed using the method proposed. The numerical analysis result shows that the reliability index for the wet-sprayed concrete tunnel lining structure is higher and the tunnel lining structure is in safe state.

Key words: fiber reinforced concrete, tunnel lining structure, reliability analysis, response surface method, nonlinear finite elements analysis

中图分类号:

U 459

华渊，周太全，吕宝华 . 基于响应面法的软岩隧道湿喷纤维混凝土支护结构可靠度分析[J]. , 2008, 29(S1): 232-236.

HUA Yuan , ZHOU Tai-quan , Lü Bao-hua . Reliability analysis of wet-sprayed fiber reinforced concrete lining structure within soft and weak rock mass using response surface method[J]. , 2008, 29(S1): 232-236.

参考文献

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