Explanipedia

Monitoring and Analysis of Mechanical Response of Main Tunnel Structure During Segment-Cutting Process Open

Xiaofeng Liu, Quansheng Zang, Xuanxuan Zi, M.K. Ji, Changyi Yu · 2025

This study analyzes the deformation and internal force changes of the main tunnel during the cutting process of the pipe jacking method for cross passages. A combination of field monitoring and numerical simulation was used to investigate …

A 2D moisture diffusion model for simulating desiccation fracturing of soil based on particle discontinuous deformation analysis Open

Feng Liu, Ye Teng, Changyi Yu, Yongtao Yang · 2025

Structural damage assessment of shallow buried tunnel subjected to multiple slip surfaces and blind reverse fault: a numerical study Open

Jianwang Li, Changyi Yu, Wenrui Qi, Xueshan Ding, Hangyu Zhou , et al. · 2025

Faults and fractured zones are common geological hazards in tunnel construction, especially in seismic regions where tunnels are highly vulnerable to fault movements. This study uses Urumqi Metro Line 2 as a case, establishes a new damage …

Simulation analysis of nonlinear consolidation in soft soil based on large-scale consolidation permeability tests Open

Changxi Yue, Wei Pan, Yonghua Cao, Guoliang Ye, Changyi Yu · 2025

To mitigate the influence of test size on the nonlinear compression and permeability characteristics of soft soils, this study utilized a custom-made large scale consolidation-permeation apparatus to conduct indoor experiments. The relatio…

On the calibration and verification of Voronoi-based discontinuous deformation analysis for modeling rock fracture Open

Kaiyu Zhang, Feng Liu, Kaiwen Xia, Ying Xu, Peng Dong , et al. · 2023

Since its introduction, discontinuous deformation analysis (DDA) has been widely used in different areas of rock mechanics. By dividing large blocks into subblocks and introducing artificial joints, DDA can be applied to rock fracture simu…

Finite element analysis of island excavation process of foundation pit Open

Changyi Yu, Jie Long, Mingyue Lu · 2021

In the construction of foundation pit, island excavation is suitable for large-scale foundation pit because of its high speed, but it requires a higher support system. In this paper, finite element simulation is carried out for the constru…

Study on the influence of deep foundation pit excavation on adjacent metro structure Open

Changyi Yu, Jie Long, Mingyue Lu · 2021

The excavation of deep foundation pit will have an adverse impact on the existing adjacent subway structure, which is affected by a series of factors such as subway structure, foundation pit depth and excavation construction process. Based…

Model test study of bending moment and negative skin friction for batter rock-socketed piles under surface load Open

Guo Wei, Daokun Zhuang, Ren Yuxiao, Cui Wenxi, Changxi Yue , et al. · 2021

Batter rock-socketed piles (BRSP) foundation is one of common foundations, such as port engineering or cross-sea bridge, while there are few studies on negative skin friction for BRSP. A series of model tests are conducted to explore negat…

Research on Influence of Deep Foundation Pit Excavation and Dewatering on Pile Foundation of Railway Bridge Open

Tianyun Liu, Changyi Yu, Nan Zhu · 2021

The three-dimensional numerical model of the foundation pit engineering is established, and the fluid-structure coupling method is used to calculate the settlement of the pile foundation of the adjacent railway bridge caused by the excavat…

Study on temporal and spatial distribution law of thaw settlement displacement by horizontal freezing method Open

Changyi Yu, Mingyue Lu · 2020

After freezing construction, the damage caused by thawing settlement mainly comes from the displacement and settlement of strata, which leads to uneven settlement of underground pipelines and surface buildings in the project area. In this …

Optimization of Horizontal Freezing Scheme for Complex Curtain Open

Changyi Yu, Mingyue Lu · 2020

In view of the difficulty of theoretical calculation for complex curtain with complex form of subway connecting passage freezing method, this study simulates the subway connecting passage freezing method construction with finite element me…

Study on the influence of horizontal freezing and melting of complex curtain on surrounding environment Open

Changyi Yu · 2020

In this paper, the 3-D finite element model is used to systematically analyze the displacement field of artificial frozen soil thawing settlement. During the simulation process, the thermophysical parameters change with temperature, such a…

Study on environmental impact of artificial horizontal freezing method in subway connecting passage Open

Changyi Yu, Mingyue Lu · 2020

When the subway is built in complex urban strata, especially when excavating near buildings, it is necessary to strictly control the freezing amount by adopting artificial freezing method. At present, the theoretical calculation is aimed a…

Monitoring Analysis and Research of a Foundation Pit Engineering in Soft Soil Area Open

Changyi Yu · 2019

A deep foundation pit project in soft soil area has deep depth, complex surrounding environment and close proximity to subway, so it is necessary to monitor the supporting structure and surrounding environment of the foundation pit during …

Influence of Foundation Pit Excavation on Structural Safety of Adjacent Existing Tunnels Open

Changyi Yu · 2019

The existing subway tunnel will be deformed due to the excavation unloading of the adjacent foundation pit, which will affect the normal use and safety performance of the tunnel. Therefore, it is particularly important to evaluate the impa…

Study on the Influence of Deep Foundation Pit Excavation on Existing Structures Around Open

Changyi Yu · 2019

For a foundation pit project, due to its large depth, complex surrounding environment and close proximity to subway tunnel, the influence of foundation pit on the surrounding existing structures needs to be considered in excavation. Accord…

Research on Effectiveness of Complex Supporting System of Deep Foundation Pit Based on Numerical Method Open

Changyi Yu · 2019

With the development of urban construction, in order to alleviate the impact of foundation pit excavation on the surrounding environment, some complex support forms have been adopted. In order to reduce the risk of these supports, numerica…

Numerical Analysis of Deep Foundation Pit Excavation under Complex Beam Support Open

Changyi Yu · 2019

With the deepening of people's understanding of foundation pit engineering, people pay more and more attention to the three-dimensional characteristics of foundation pit engineering, and the continuous development of computer technology ma…

Research on Optimization of Supporting Forms of Complex Foundation Pit Based on Finite Element Method Open

Changyi Yu · 2019

As the working conditions of foundation pit engineering become more and more complex, its requirements for supporting forms are also higher and higher. The plane excavation of a complex foundation pit in a project requires the reservation …

Numerical Analysis of Deep Foundation Pit Excavation Supported by Large Diameter Ring Beam Open

Changyi Yu · 2019

At present, there are more and more high-rise buildings and underground projects due to the shortage of land in the city, and a large number of deep foundation pits need to be built accordingly in order to study the impact on the surroundi…

Optimization Design of Large-Area Foundation Pit Support System Based on Finite Element Method Open

Changyi Yu · 2019

With the acceleration of urbanization, more and more large-scale deep foundation pit projects are being carried out in the city. Due to the requirements of site and construction technology, it is necessary to design a supporting form that …

Design and Deformation Monitoring of Complex Support in Deep Foundation Pit Open

Changyi Yu · 2019

In this paper, the supporting scheme of a deep foundation pit project is designed, and the supporting structure system of complex horizontal support form and the ground wall are put forward. On this basis, the necessity of foundation pit c…

Research on Continuous Concrete Continuous Beam with BFRP on FEM Open

Changyi Yu · 2019

At present, the research on basalt fibre reinforced polymer (BFRP) at home and abroad is still in the initial stage, and the research on strengthening beams mostly focuses on strengthening simply supported beams, while the research on stre…

Analysis on Influence of Foundation Pit Excavation Supported by Large Diameter Ring Beam on Surrounding Environment Open

Changyi Yu · 2019

Excavation of foundation pit is a common engineering type in urban construction. In order to reduce the impact of foundation pit excavation on the environment, its supporting form plays a decisive role. In this paper, the finite element mo…

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