Evaluation of blast-resistant ability of shallow-buried reinforced concrete urban utility tunnel

Zhou, Qiang; He, Huguang; Liu, Sanfeng; Wang, Peng; Zhou, Yinzhi; Zhou, Jiannan; Fan, Hualin; Jin, Fengnian

doi:10.1016/j.engfailanal.2020.105003

Cited by 20 publications

(10 citation statements)

References 16 publications

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“…Some researchers have investigated this effect on the response of the structure or the medium comparing the results obtained by different charge weights 14,28,35,51,78–85 . Some references investigated this issue experimentally 3–5,86–89 . Another case in which the charge weight is important is the crater size resulting from the surface explosions.…”

Section: Effective Parameters Of External Explosion Loads On Buried S...mentioning

confidence: 99%

“…For example, descriptions of failure modes for CFRP cloth‐strengthened tunnels can be found in Reference 88. Moreover, the failure modes of urban utility tunnels with and without BFRP reinforcement are presented in References 4,5, respectively. The authors in Reference 3 visually investigated the damage to polyurea retrofitted utility tunnels.…”

Section: Failure Criteria For Buried Structuresmentioning

confidence: 99%

“…They derived the PPV thresholds based on the von Mises failure criterion of the pipeline material. As another example, Zhou et al employed the number of cracks in the tunnel roof in Reference 5 to determine the levels of damage after in‐situ tests. They determined the mid‐span displacement, crack width, and acceleration for each level of damage.…”

Section: Failure Criteria For Buried Structuresmentioning

confidence: 99%

“…publications in this field emphasize the safety of urban structures. Among the various applications of this topic are safety assessment of transportation and metro tunnels, 1 civil air defense tunnels, 2 urban utility tunnels, [3][4][5] underground pipelines, [6][7][8][9][10][11][12][13] culverts, 14 as well as safety assessment in excavations near the existing tunnels [15][16][17][18][19][20][21][22] or the extension of tunnels, [23][24][25] and safe storage of explosives. 26 These structures have different cross-sections depending on their function, design, and construction technology 27 as depicted in Figure 1A.…”

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confidence: 99%

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Simulating the response of buried structures to external blast loads: Methods, challenges, and advances

Mohammadi

Khalilpour

Sareh

2022

Engineering Reports

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Various methods have been proposed to ensure the serviceability of buried structures such as road tunnels, urban utility tunnels, water conduits, underground shelters, and deposition chambers against extreme loads, the most common of which are experimental and computational methods. An external explosion in the vicinity of such structures is one of these extreme loads. In general, different types of external blasting for buried structures can be classified as surface blasting, coupled or uncoupled buried explosions, excavation by drilling and blasting near the structure, and the accidental detonation of explosive depositions. Laboratory or field tests for explosions are usually limited by financial and safety constraints; therefore, numerical simulations are often regarded as a vital tool in the study of such problems. Though computer software and hardware have improved rapidly in recent decades, and various numerical solvers have been developed, there is no universal method for solving all external explosion problems. Each numerical method can produce sensible results under certain conditions and assumptions, along with its limitations in computational cost. Consequently, these problems have been particularly difficult to investigate, and even in some cases, the results of different studies seem to be inconsistent. Besides providing an extensive review of the available literature in the field of numerical simulation of external explosions near buried structures and a discussion of the damage criteria associated with such explosions, this study also highlights some inconsistencies that may need further investigation.

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Section: Effective Parameters Of External Explosion Loads On Buried S...mentioning

confidence: 99%

Section: Failure Criteria For Buried Structuresmentioning

confidence: 99%

Section: Failure Criteria For Buried Structuresmentioning

confidence: 99%

mentioning

confidence: 99%

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Simulating the response of buried structures to external blast loads: Methods, challenges, and advances

Mohammadi

Khalilpour

Sareh

2022

Engineering Reports

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“…The construction excavation method of the tunnel will affect the safety and stability of the tunnel [1][2][3]. And when the tunnel crosses a high-ground stress soft rock area, it is critical to control the blasting vibration to disturb the tunnel structure itself as well as the existing lining damage [4][5], it is of great theoretical value to study tunnel damage and dynamic characteristics.…”

Section: Introductionmentioning

confidence: 99%

Dynamic damage and response characteristics of the tunnel by FEM modeling and field trials

Zheng¹,

Wu²,

Wu³

et al. 2023

J. vibroeng.

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The dynamic response characteristics of the tunnel and the stability of the surrounding rock are crucial to its safety of the tunnel. Combining the numerical simulation software and field measurement results, the change of peak particle vibration (PPV) and stress were analyzed, based on the longitudinal wave data from the acoustic tests, the blasting damage effects under the action of different blasting counts, including different locations in the deep part of the surrounding rock, were investigated. The results show that: (1) in the vertical direction of the tunnel, the PPV of the tunnel floor and tunnel sidewall is larger, the PPV of the tunnel top is the second, and the tunnel arch shoulder and arch foot is the smallest; (2) under the action of blasting, the stress concentration at the tunnel bottom and arch foot is easier, and the stress monitoring should be strengthened; (3) The depth of damage at different distances was 1.5 m and 3.0 m, respectively, and the depth of damage to the surrounding rock increased from 2.5 m to 4.0 m when the number of blasts was 10 and the number of blasts was 10.

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Behaviors of arched tunneling segments reinforced by basalt fiber reinforced plastic rebars

Hou,

Feng,

Jiang

et al. 2024

Polymer Composites

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In this research, basalt fiber reinforced plastic (BFRP) rebars reinforced tunneling segment (BRRTS) technique was developed. All the BFRP rebars were designed, pre‐cured according to the reinforcement design and the reinforcement drawing of steel rebars reinforced concrete tunneling segments (SRRTSs). Two criteria, the equal reinforcement ratio criterion (ERRC) and the half stiffness principle (HSP), were applied to design the BRRTs. Bending experiments were performed to reveal the deformation, damage and load carrying capacity of the BRRTSs. With flexural‐shearing coupling failure mode, the BRRTS has longer elastoplastic deformation and comparable (ERRC) or much greater (HSP) load carrying capacity compared with traditional SRRTS, indicating that the BRRTS can replace the SRRTS in some cases.Highlights BFRP rebars reinforced tunneling segment was designed, constructed, and tested. BFRP rebars reinforced tunneling segment has long ductile deformation. BFRP rebars reinforced tunneling segment has higher load‐bearing capacity. Utilization efficiency of BFRP rebars varies from 0.565 to 0.646.

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Evaluation of blast-resistant ability of shallow-buried reinforced concrete urban utility tunnel

Cited by 20 publications

References 16 publications

Simulating the response of buried structures to external blast loads: Methods, challenges, and advances

Simulating the response of buried structures to external blast loads: Methods, challenges, and advances

Dynamic damage and response characteristics of the tunnel by FEM modeling and field trials

Behaviors of arched tunneling segments reinforced by basalt fiber reinforced plastic rebars

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