Analytical Prediction for Tunnel-Soil-Pile Interaction Mechanics based on Kerr Foundation Model

Zhang, Zhiguo; Zhang, Chengping; Jiang, Kangming; Wang, Zhiwei; Jiang, Yunjuan; Zhao, Qihua; Lu, Minghao

doi:10.1007/s12205-019-0791-x

Cited by 36 publications

(17 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…(5) The force that the FHS exerts on the foundation Based on the Winkler foundation model, the Kerr foundation model [41,42] adds a shear layer and a spring layer to overcome some of the disadvantages of the Winkler foundation model. Therefore, the Kerr foundation model is more accurate than the Winkler foundation model at predicting the deformation and stress of plates [15].…”

Section: Solution Of the Force That The Hs Exerts On The Underlying S...mentioning

confidence: 99%

Prediction Model of Abutment Pressure Affected by Far-field Hard Stratum Based on Elastic Foundation Theory

Zhang¹,

Kang²

2020

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

In view of the three-dimensional dynamic abutment pressure, the influence of the far-field hard stratum (FHS) in deep, thick coal seams is indeterminant. Based on elastic foundation theory, a three-dimensional dynamic prediction model of the abutment pressure was established. Using this model, the dynamic change in the coal seam abutment pressure caused by the movement of the FHS was studied, and a method for determining the dynamic change range of the abutment pressure was developed. The results of the new prediction model of the abutment pressure are slightly higher than the measured values, with an error of 0.51%, which avoids the shortcomings of the results because the Winkler foundation model results are lower than the measured values and have an error of 9.98%. As time progresses, the abutment pressure and its distribution range are affected by the FHS movement, which has the characteristics of gradually increasing dynamic change until the FHS fractures. The peak value of the abutment pressure increases linearly with time, and the influence range increases with time following a power function with an exponent of less than 1. The influence range of the FHS movement on the abutment pressure ahead of the working face, behind the working face, and along the working face is 10 times, 25 times, and 17 times the mining thickness, respectively. According to the actual geological parameters, the dynamic change range of the coal seam abutment pressure was determined by drawing an additional stress curve and by determining the threshold value. These research results are of great significance to the partition optimization of the roadway support design of deep, thick coal seams.

show abstract

Section: Solution Of the Force That The Hs Exerts On The Underlying S...mentioning

confidence: 99%

Prediction Model of Abutment Pressure Affected by Far-field Hard Stratum Based on Elastic Foundation Theory

Zhang¹,

Kang²

2020

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

show abstract

“…Because of the diversity and complexity of the geological conditions of the tunnel surrounding rock and the uncertainty of the stress of the tunnel support structure, the design and construction of the tunnel engineering structure are still in a semitheoretical and semiempirical state, and the theoretical calculation is mainly used as qualitative analysis [12][13][14][15][16]. e large excavation span of a multiarch tunnel, coupled with many factors, such as the interaction caused by excavation, multiple disturbances of the surrounding rock, and asynchronous construction between the support and lining during the construction of the two main tunnels, makes its stress conditions extremely complex.…”

Section: Introductionmentioning

confidence: 99%

Deformation Characteristics of the Surrounding Rock of a Six‐Lane Multiarch Tunnel under Different Excavation Conditions

Luo

Lei

2021

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Highway tunnel plays an increasingly prominent role in the development of high-grade highway traffic in mountainous countries or regions. Therefore, it is necessary to explore the deformation characteristics of the surrounding rock of a six-lane multiarch tunnel under different excavation conditions. Using the three-dimensional indoor model test and finite element analysis, this paper studies the dynamic mechanical behavior of a six-lane construction, reveals the whole process of the surrounding rock deformation process of class II surrounding rock under different excavation conditions, and puts forward the best construction and excavation method. The results show that the maximum displacement rate of excavation scheme III is the largest, and the maximum displacement rate of excavation scheme I is basically the same as that of excavation scheme II. Therefore, in terms of controlling the displacement rate of the surrounding rock, the effect of excavation scheme I is basically the same as that of excavation scheme II, while that of excavation scheme III is poor. In terms of construction technology, scheme II is simpler than scheme I and can ensure the integrity of the secondary lining. Therefore, in class II surrounding rock of the supporting project, it is recommended to adopt scheme II for construction.

show abstract

“…The turn line has a complicated force condition for the tunnel with a small interval, and the process has great influence on each other during construction. [1][2][3][4][5] Therefore, the surrounding rock may become unstable or even fall down and the initial support may crack and be destroyed when the construction method of the underground excavation tunnel is not properly selected. [6][7][8][9][10][11] It is key to ensure tunnel construction safety to simulate the construction process of a small interval tunnel in the turn line of metro, [12][13][14][15][16] analyze the rationality of the proposed construction method, and predict the surrounding rock and initial support stress and deformation and possible damage parts.…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis and application of the construction method for the small interval tunnel in the turn line of metro

et al. 2020

View full text Add to dashboard Cite

The surrounding rock may become unstable or even fall down and the initial support may crack and be destroyed when the construction method of the underground excavation tunnel is not properly selected in the turn line of metro. . A section of the Santunbei turn line of Urumqi Metro Line 1# was taken as the engineering background. The proposed construction method was analyzed by numerical simulation. Numerical analysis shows that the final surface settlement caused by the proposed construction method is 3.0 mm and the horizontal convergence is 3.2 mm. It also turns out that the proposed construction method causes less deformation, and the method can be applied to the construction of the small interval tunnel in the Santunbei turn line of metro. The rationality of the method and numerical model was further verified by comparison between the monitored data of surface settlement, horizontal convergence and vault sinking, and numerical simulation results. Finally, the deformation and stress of the six construction methods were compared. The deformation and stress caused by the six construction methods are almost the same. It indicates that the construction spacing between the left and right tunnels does not affect the safety of tunnel construction. Therefore, the appropriate construction spacing could be selected according to the resource configuration, instead of deformation and stress.

show abstract

Analytical Prediction for Tunnel-Soil-Pile Interaction Mechanics based on Kerr Foundation Model

Cited by 36 publications

References 44 publications

Prediction Model of Abutment Pressure Affected by Far-field Hard Stratum Based on Elastic Foundation Theory

Prediction Model of Abutment Pressure Affected by Far-field Hard Stratum Based on Elastic Foundation Theory

Deformation Characteristics of the Surrounding Rock of a Six‐Lane Multiarch Tunnel under Different Excavation Conditions

Numerical analysis and application of the construction method for the small interval tunnel in the turn line of metro

Contact Info

Product

Resources

About