To guide the seismic design of 〖ＪＰ２〗prefabricated structure of a metro station in Changchun, China, the
basic principles of Pushover analysis method and ABAQUS finite element software
are adopted to establish soilstructure interaction
finite element analysis models of prefabricated and castinplace metro station structures. The
internal forces of the two kinds of structures under different seismic
intensities are compared and analyzed to study the law and reason of difference
in internal force under horizontal earthquake. The results show the following:
(1) The internal force distribution trend, the peak bending moment of the
components, and the position of the reverse bending point of the two structures
are the same; the peak bending moments of the two structures appear at the top
arch shoulder, the middle of the top arch, and the junction between the
sidewall and the bottom plate. (2) Compared with the castinplace structure, the peak bending moment
of each component of the fabricated station structure is significantly reduced
and the maximum reduction range of the peak bending moment is approximately
50%; the joint bending moment of the fabricated station structure is
significantly lower than that of the corresponding part of the castinplace structure and the maximum reduction
range is approximately 70%. (3) Under the action of horizontal earthquakes, the
nonrigid joints of the fabricated station structure
are deformed first, which releases the joint bending moment, and reduces the
joint bending moment and the peak bending moment of the precast members, which
is conducive to the seismic design of the structure.
LI Xia, YANG Xiuren
.
Comparative Analysis of Internal Forces of
Prefabricated and CastinPlace Metro Station Structures under Horizontal Earthquake
[J]. Tunnel Construction, 2022
, 42(S1)
: 147
-154
.
DOI: 10.3973/j.issn.2096-4498.2022.S1.017
