Full-scale testing and modeling of the mechanical behavior of shield TBM tunnel joints

Ding, Wenqi; Yicheng, Peng; Yan, Zhiguo; Shen, Bi-Wei; Zhu, Hehua; Wei, Xinxin

doi:10.12989/sem.2013.45.3.337

Cited by 64 publications

(18 citation statements)

References 9 publications

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“…This means that the rotation stiffness depends on the rotation angle of the joint. According to the mechanical behaviour reported by previous studies (Ding et al 2013;Li et al 2015;Dong & Xie 2013;Luttikholt 2007), the M-θ curve model should satisfy the following requirements: 1. When no moment exists in a joint's section, no rotation angles will appear (M = 0 or θ = 0), which means that the M-θ curves pass through the origin.…”

Section: Mechanical Analysis Of Concrete Segment Jointsmentioning

confidence: 99%

Mechanical behaviour of semi-rigid connections coupling two concrete segmental linings

Zhai¹,

Xu²

2020

J. S. Afr. Inst. Civ. Eng.

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Section: Mechanical Analysis Of Concrete Segment Jointsmentioning

confidence: 99%

Mechanical behaviour of semi-rigid connections coupling two concrete segmental linings

Zhai¹,

Xu²

2020

J. S. Afr. Inst. Civ. Eng.

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“…Previous experiments were mainly concentrated on the flexural rigidity, shear strength, and internal forces of a structure. [5][6][7][8] However, it is difficult to measure the segment joint opening directly using the above methods, and it is acknowledged that the filed measurement is a reliable method to evaluate the stability of tunnel. 9,10 Recently, new sensors, such as joint meters, have been introduced to measure the joint opening in field.…”

Section: Introductionmentioning

confidence: 99%

A structural health monitoring system for data analysis of segment joint opening in an underwater shield tunnel

Tan

Chen

et al. 2019

Structural Health Monitoring

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The opening of segment joints is considered critical for the stability analysis of a shield tunnel lining. In order to prevent tunnel disasters, an integrated framework was developed in this study based on the laboratory experiment, real-time monitoring, and statistic theory. As a case study, this presented method was employed in a typical underwater shield tunnel to prevent leakage disasters. The water pressure experiment was used to analyze the importance of joint openings for the tunnel waterproofing. Then, an automatic structural health monitoring system was installed in the study site to have real-time monitoring of segment joint opening and the variation of external load applied to the structure. Based on the monitoring data, a multiple linear regression model was developed to explain the response of joint opening to water pressure and temperature at the important positions of arch crown, spandrel, and hance of the tunnel. The multiple linear regression results were verified to be in agreement with those of the numerical simulation; they denote that (1) joint opening decreased with the rise in temperature, but increased with the rise in water pressure at arch crown and hance, and (2) the segment joint opening decreased with the rise in water pressure at spandrel. As a potential application, the developed model was applied to predict future behaviors of structure, which is vital to prevent disasters and provides a reference to underwater constructions.

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“…The joint open width is also regarded as a key performance indicator, since it is the weakest part of the shield segmental lining (Liao et al 2008;Zhang et al 2015). As the weakest and vulnerable point in the segmental lining, joints have been investigated in experiments (Ding et al 2013;Liu et al 2015;Kiani et al 2016), numerical analyses (Ding et al 2004;Teachavorasinskun and Chub-uppakarn 2010) and case studies (Jun 2011;Basnet and Panthi 2018). Testing apparatus was designed to accurately monitor water leakage pressure of segmental joints under various combinations of opening and offsets (Ding et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Waterproofing Properties of Putty-Based Composite Rubber Strip for Underground Post-Tensioned Precast Concrete Structures

Chen

et al. 2019

Int J Concr Struct Mater

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The proper assembly of underground precast concrete structures is often critical in the construction of underground structures. In particular, interfacial waterproofing between precast concrete segments is a key factor influencing use, safety, and life span. Current practice is to incorporate waterproofing rubber strips in the design. During the installation process, compressive stress is applied to the strip by post-tensioning to achieve performance. For this paper, lateral constraint compression tests were carried out on composite rubber seal strips that utilize putty. Special waterproofing and sealing test devices were designed to investigate corresponding relationships between water pressure and compressive stress (or strain). A relationship between water resistance pressure and compression stress and strain of the putty-based composite rubber strip was proposed based on the series tests and the control target of the minimum compression strain of the putty composite rubber strip was then suggested. Finally, full-scale waterproofing tests on tunnel joints were conducted. The experimental results provide a scientific reference for the engineering application and design of composite sealing rubber strips putty for underground post-tensioned precast concrete structures.

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Full-scale testing and modeling of the mechanical behavior of shield TBM tunnel joints

Cited by 64 publications

References 9 publications

Mechanical behaviour of semi-rigid connections coupling two concrete segmental linings

Mechanical behaviour of semi-rigid connections coupling two concrete segmental linings

A structural health monitoring system for data analysis of segment joint opening in an underwater shield tunnel

Experimental Study on Waterproofing Properties of Putty-Based Composite Rubber Strip for Underground Post-Tensioned Precast Concrete Structures

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