Shaking table test research on seismic damage and failure of tunnel segmental lining crossing multiple rupture surfaces

被引：0

作者：

Zhang X. ^{[1
,2
]}

Shen Y. ^{[1
,2
]}

Chang M. ^{[1
,2
]}

Su W. ^{[3
]}

Zhou P. ^{[1
,2
]}

Wang H. ^{[1
,2
]}

机构：

[1] Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Sichuan, Chengdu

[2] National Engineering Research Center of Geological Disaster Prevention Technology in Land Transportation, Southwest Jiaotong University, Sichuan, Chengdu

[3] China Railway Eryuan Engineering Group Co.，Ltd., Sichuan, Chengdu

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2023年 / 42卷 / 09期

基金：

中国国家自然科学基金;

关键词：

cracking morphology; fault fracture zone; marginal spectrum; multi-rupture surfaces; shaking table test; tunnel engineering;

D O I：

10.13722/j.cnki.jrme.2023.0387

中图分类号：

学科分类号：

摘要：

Relying on tunnel engineering crossing active fault fracture zone in high intensity regions in Western China，shaking table test of tunnel crossing multi-rupture surfaces was carried out. Based on acceleration，dynamic strain，displacement responses at measurement points and the state of cracks，the energy and damage characteristics of tunnel segmental lining structure and surrounding rock under incremental seismic wave excitation were studied. On basis of HHT transform method，the Hilbert marginal spectrum and transient energy spectrum demonstrated the damage trend of the surrounding rock and tunnel structure. The results are as follows：(1) The coseismic dislocation of the model soil surface is significant under ground motion，the major and minor rupture surfaces in fault fracture zone can be defined according to the dislocation displacement on both sides of rupture surfaces. (2) The damage evolution of tunnel structure near major rupture surface in footwall lagged behind that in hanging wall，the decrease in peak values of primary frequency and marginal spectrum of tunnel structure near the major rupture surface reaches the maximum of 29.1% and 87.1% under 0.4 g seismic excitation，and the extent of damage is much more serious than that in other parts. (3) Tunnel structure is mainly subjected to tensile cracking. The tensile cracking occurs in invert near major rupture surface in hanging wall under 0.2 g ground motion，while damage in arch waist appears under 0.4 g ground motion. (4) Surrounding rock in hanging wall decreases 34.7% in primary frequency under 0.5 g ground motion. The damaged degree significantly exceeds that of footwall and middle part of fault fracture zone. (5) According to the damage pattern of tunnel structure，invert is the weakest part which is easily cracked to varying degrees. The seismic design coupling damping design of tunnel invert are needed to focus on strengthening. Tunnel structure near interface between hanging wall and fault suffers most under ground motion，while tunnel in the middle of fault fracture zone suffers less. The seismic partition and fortification of tunnel engineering through fault fracture zone is required. The conclusions can provide certain reference basis for the seismic design of tunnels in high intensity seismic zones. © 2023 Academia Sinica. All rights reserved.

引用

页码：2237 / 2252

页数：15

共 26 条

[1]

LOUKIDIS D, BOUCKOVALAS G D, PAPADIMITRIOU A G., Analysis of fault rupture propagation through uniform soil cover[J], Soil Dynamics and Earthquake Engineering, 29, pp. 1389-1404, (2009)

[2]

IOANNIS A, GEORGE G., Foundation-structure systems over a rupturing normal fault：Part II. Analysis of the Kocaeli case histories[J], Bulletin of Earthquake Engineering, 5, 3, pp. 277-301, (2007)

[3]

BAZIAR M H，, NABIZADEH A, LEE C J，, Et al., Centrifuge modeling of interaction between reverse faulting and tunnel[J], Soil Dynamics and Earthquake Engineering, 65, pp. 151-164, (2014)

[4]

YAN Gaoming, SHEN Yusheng, GAO Bo, Et al., Experimental study of stick-slip fault crossing segmental tunnels with joints[J], Rock and Soil Mechanics, 40, 11, pp. 4450-4458, (2019)

[5]

LI Guoliang, HUANG Shuanglin, Strike slip fault failure mode and tunnel engineering countermeasures[J], Journal of Railway Engineering Society, 39, 8, pp. 18-23, (2022)

[6]

LI T., Damage to mountain tunnels related to the Wenchuan earthquake and some suggestions for aseismic tunnel construction[J], Bulletin of Engineering Geology and the Environment, 71, 2, pp. 297-308, (2012)

[7]

WANG W L, WANG T T, SU J J，, Et al., Assessment of damage in mountain tunnels due to the Taiwan Chi-Chi Earthquake[J], Tunnelling and Underground Space Technology Incorporating Trenchless Technology Research, 16, 3, pp. 133-150, (2001)

[8]

CUI Guangyao, Seismic design calculation method and test study of tunnel shallow-buried portal and rupture stick-slipping section, Chinese Journal of Rock Mechanics and Engineering, 33, 3, (2014)

[9]

SHEN Y S, WANG Z Z, Et al., Shaking table test on flexible joints of mountain tunnels passing through normal fault[J], Tunnelling and Underground Space Technology, 98, (2020)

[10]

YAN Gaoming, SHEN Yusheng, GAO Bo, Et al., Shaking table tests of reinforced rubber joint in cross fault tunnel[J], Journal of Vibration and Shock, 40, 13, pp. 129-135, (2021)

← 1 2 3 →