The optimization of recharge parameters based on an
orthogonal test and fuzzy analytical hierarchy process (FAHP)value
engineering method is proposed to guarantee the functionality and economy of
groundwater recharge of foundation pit. Four typical recharge parameters of the
foundation pit project of the Kaiyuan Road station of the Jinan metro line R2
are selected to conduct the orthogonal test under five levels, and different
recharge construction conditions are obtained. Then the numerical simulation is
conducted for 30 conditions in an established finite element model, and the
simulated results are processed using the FAHPvalue
engineering method. The greater the magnitude of value, the higher the costperformance of the recharge scheme for the foundation pit project.
Furthermore, the optimal combination of recharge parameters can be obtained by
comparing the value magnitudes. The results demonstrate the following: (1) For
the groundwater recharging of the foundation pit in a waterrich confined area of Jinan, China, the value reaches the maximum
when the recharge depth is -10 m, the distance is 12 m, the recharge well
spacing is 10 m, and the pressure is 10 kPa. (2) The recharge scheme designed
utilizing the orthogonal test and FAHPvalue
engineering method dramatically reduces cost with a small sacrifice on the
recharge effect and considers both functionality and economy.
LIANG Yongfeng
,
WU Bo
,
WANG Jinjin
,
LI Chenghu
,
SUO Xiao
,
ZHANG Ke
. Optimization of Recharge Parameters for Foundation Pit
Engineering Based on Orthogonal Test and Fuzzy Analytical Hierarchy ProcessValue Engineering Method[J]. Tunnel Construction, 2021
, 41(9)
: 1492
-1501
.
DOI: 10.3973/j.issn.2096-4498.2021.09.007
