# [1]靳军伟,付柏毅,陈允斌,等.隧道Park收敛模式正交下穿既有隧道影响分析[J].郑州大学学报(工学版),2022,43(01):76-82.[doi:10.13705/j.issn.1671-6833.2022.01.012] 　JIN Junwei,FU Boyi,CHEN Yunbin,et al.Analysis of Existing Tunnels Deformation Induced by New Othogonal Tunneling Using Park Convergence Model[J].Journal of Zhengzhou University (Engineering Science),2022,43(01):76-82.[doi:10.13705/j.issn.1671-6833.2022.01.012] 点击复制 隧道Park收敛模式正交下穿既有隧道影响分析() 分享到： var jiathis_config = { data_track_clickback: true };

43卷

2022年01期

76-82

2022-01-09

## 文章信息/Info

Title:
Analysis of Existing Tunnels Deformation Induced by New Othogonal Tunneling Using Park Convergence Model

Author(s):
1.School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;
2.Shandong Zhengyuan Construction Engineering Co., Ltd., Jinan 250014, China; 3.China Railway 15th Bureau Group Urban Rail Transit Engineering Co., Ltd., Luo-yang 471000, China

Keywords:

TU454
DOI:
10.13705/j.issn.1671-6833.2022.01.012

A

Abstract:
Due to the complexity of the traditional force controlled method in analyzing the deformation process of the ground and the existing tunnels caused by the orthogonal under-crossing of the tunnel, the displacement controlled method was adopted in this article to analyze the influence of tunnel excavation on the ground settlement and the longitudinal deformation of the arch bottom of the existing tunnels based on Park’s convergence model that described more realistic tunnel boundary deformation. Firstly, through the comparison of the mea-suring data with the calculation results of the method in this paper and the force controlled method, the feasibility of the displacement control method under newly built tunnels under-crossing existing tunnel was verified, and then the four tunnel convergence modes of Park were used as the boundary conditions on the new tunnel for further analysis. The comparison between the calculated results and the actual measurements showed that the results of the displacement control method for natural site settlement were very close to the measured data. The calculation results showed that, given the displacement of the tunnel vault g, there were certain differences in the shape and value of the ground settlement trough and the deformation of tunnel arch bottom caused by Park’s four convergence models. With the same soil loss and g value, the effects of convergence mode on surface settlement and the deformation of tunnel arch bottom were circular non-uniform convergence, elliptical convergence, elliptic non-uniform convergence, and uniform convergence in descending order. Among them, the effect of elliptical convergence and non-uniform convergence of ellipse was relatively close, while the uniform convergence and the actual measurements had the worst fitting effect. Surface settlement caused by tunnel construction and the deformation mode of existing tunnel was different, the surface settlement appeared as a Gaussian curve while the tunnel deformation may appear as a “W” shape when the distance between the tunnels was constant.

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