Currently, the
shield tunnel attitude is based mainly on human experience and lacks relevant
theoretical analysis. Accordingly, to effectively control the horizontal
attitude in shield tunneling, a theoretical analysis model for the mechanical
behavior and horizontal attitude of the shield based on a twodimensional
shield structure is proposed. A theoretical model for shield horizontal
attitude is established by introducing shield behavior into the analysis of the
horizontal force balance of the shield, considering the stratum parameters, the
jack forces, the soil pressure, and the construction measurement of engineering
practices. The theoretical analysis results show the following: (1) The shield
attitude control is closely related to the jack pressure and is affected by the
soil stiffness and the total thrust. (2) The applicability of the theoretical
model is verified by comparing it with the field observed data, and it is
confirmed that the theoretical model shows the advantages of simple parameters
and easy derivation. (3) Accurate attitude predictions can be achieved, which
provides effective theoretical support and a practical basis for shield
attitude control.
HUANG Wei
,
REN Meng
,
CHEN Peishuai
,
LUO Huiwu
. Theoretical Analysis Model of Shield Horizontal Attitude[J]. Tunnel Construction, 2022
, 42(1)
: 83
-89
.
DOI: 10.3973/j.issn.2096-4498.2022.01.011
