Influence of Pea-Gravel Layer on Segment Ring Support Performance in Shield TBM Tunnels: A Discrete-Continuous Coupling Simulation and Model Test (Record no. 814332)

MARC details
000 -LEADER
fixed length control field 02569aab a2200265 4500
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 231115b20232023|||mr||| |||| 00| 0 eng d
022 ## - INTERNATIONAL STANDARD SERIAL NUMBER
International Standard Serial Number 0733-9364
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Wu, Shengzhi
9 (RLIN) 878916
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Xie, Hongqiang
9 (RLIN) 878917
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Zeng, Zhengqiang
9 (RLIN) 878918
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Wang, Mingnian
9 (RLIN) 878919
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Zhao, Honghai
9 (RLIN) 878920
100 ## - MAIN ENTRY--PERSONAL NAME
Personal name Liu, Yue
9 (RLIN) 496910
245 ## - TITLE STATEMENT
Title Influence of Pea-Gravel Layer on Segment Ring Support Performance in Shield TBM Tunnels: A Discrete-Continuous Coupling Simulation and Model Test
300 ## - PHYSICAL DESCRIPTION
Extent 1-18 p.
520 ## - SUMMARY, ETC.
Summary, etc. In shield tunnel boring machine (TBM) tunnel construction, grouted pea gravel is used to fill gaps between the surrounding rock and segment rings, acting as a connecting layer that significantly impacts the support performance of the segment ring. This study first obtained the mechanical parameters of pea gravel through experiments, followed by an in-situ investigation to analyze the stress and surface settlement law of the segment ring during TBM construction. A discrete-continuous coupling model was then employed to examine the load transfer process at the micro level between the surrounding rock, pea gravel, and segment ring. Finally, physical model tests were conducted to compare the stress characteristics of the segment ring under different states of pea gravel during continuous loading. The findings reveal that loose pea gravel fails to sufficiently transfer the surrounding rock load to the segment ring, resulting in inadequate support and continuous surface settling until the pea gravel is consolidated. The degree of compression of loose pea gravel directly affects the contact force acting on the segment ring and its supporting effect on the surrounding rock. Moreover, the ultimate bearing capacity of the segment decreases when the pea gravel is loose. The state change of pea gravel resulting from grouting plays a crucial role in the supporting effect of the segment ring; thus, simultaneous grouting is necessary during tunnel construction in unstable strata or insufficient pea gravel filling.
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Shield tunnel Boring Machine (TBM)
9 (RLIN) 878921
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Pea Gravel
9 (RLIN) 878922
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Segment Ring
9 (RLIN) 878923
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Support Performance
9 (RLIN) 878924
650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element Grouting
9 (RLIN) 85955
773 0# - HOST ITEM ENTRY
Title ASCE: Journal of Construction Engineering and Management
Place, publisher, and date of publication Reston,Virginia, U.S.A : American Society of Civil Engineers/ American Concrete Institute
International Standard Serial Number 07339364
856 ## - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://doi.org/10.1061/JCEMD4.COENG-13512">https://doi.org/10.1061/JCEMD4.COENG-13512</a>
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Source of classification or shelving scheme Dewey Decimal Classification
Suppress in OPAC No
Koha item type Articles
-- 14993
-- Mr. Muhammad Rafique Al Haj Rajab Ali (Late)
Holdings
Not for loan Home library Serial Enumeration / chronology Total Checkouts Date last seen Koha item type
  Periodical Section Vol.149, No.10(Oct.2023)   15/11/2023 Articles