Three-dimensional seismic performance analysis of large and complex underground pipe trench structure

Tao, Lianjin; Ding, Peng; Lin, Hai; Wang, Hailong; Kou, Weifeng; Shi, Cheng; Li, Sicheng; Wu, Shuzhen

doi:10.1016/j.soildyn.2021.106904

Cited by 22 publications

(4 citation statements)

References 17 publications

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“…To consider the soil-tunnel contact relationship at the interface, the shield tunnel segments and soil are usually set as interaction contact surfaces to account for contact discontinuity between the shield tunnel and the surrounding soil medium and any possible compression, separation, or sliding of these structural components from the surrounding soil under seismic excitation [32]. Contact surfaces consisting of master and slave surfaces were defined to implement the contact pair method.…”

Section: Surrounding Rock-tunnel Interaction Boundary Conditions and ...mentioning

confidence: 99%

“…The maximu internal force of the shield tunnel under different assembly methods is shown in Figu 12, taking a 0.1 g earthquake as an example under different assembly methods. The ma imum radial axial force of CF45 is 126.9 kN, and the minimum of CF90 is 112.6 kN, wi Considering the structural stress characteristics and based on previous research experience [32], the maximum principal stress (MAPS) and the minimum principal stress (MIPS) were selected for stress characteristic analysis. MAPS is primarily used to evaluate the tensile failure location of the tunnel, while MIPS is primarily used to evaluate the compression failure location of the tunnel.…”

Section: Mechanical Behavior Of Shield Tunnel Joints Under Different ...mentioning

confidence: 99%

“…In the same case, the MIPS of the tunnel structure changes in a small range, and the MAPS of the tunnel structure using the TF assembly method is smaller than those of the other three staggered assembly methods, which may be due to the lower stiffness. Considering the structural stress characteristics and based on previous research experience [32], the maximum principal stress (MAPS) and the minimum principal stress (MIPS) were selected for stress characteristic analysis. MAPS is primarily used to evaluate the tensile failure location of the tunnel, while MIPS is primarily used to evaluate the compression failure location of the tunnel.…”

Section: Mechanical Behavior Of Shield Tunnel Joints Under Different ...mentioning

confidence: 99%

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Study on the Seismic Response Characteristics of Shield Tunnels with Different General Segment Assembly Methods and Widths

et al. 2023

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Shield tunnels assembled with general ring segments are widely used in urban areas. Segment assembly methods and widths cause changes in the mechanical properties of the structure and influence the seismic response of shield tunnels. To investigate the influence of the assembly method and width of the general ring segment on the seismic performance of a shield tunnel, a three-dimensional refined soil–structure dynamic interaction finite element model of the shield tunnel was established based on ABAQUS, and the mechanical response and joint deformation of the general ring lining under seismic loads were studied. The simulation results show the following: (i) The overall deformation of the tunnel lining is not significantly affected by the assembly method, and the difference is only 5.24% under a 0.4 g earthquake. (ii) The seismic responses of general ring tunnels with different assembly methods are quite different, and the mechanical properties of the shield tunnel assembled with the straight assembly method are better than those of the shield tunnel assembled with staggered joints, but the deformation of the structure is larger. Under the action of a 0.1 g earthquake, the radial force, circumferential force, and bending moment of the staggered 90° assembly tunnel are respectively reduced by 13.6%, 11.1%, and 17.8% compared with the staggered 45° assembly structure, but the maximum intra-opening deformation increases by 0.19, 0.58, and 2.4 mm, respectively. (iii) The internal force distribution of the bolts is controlled by the deformation of the joint; compared with the CF90 and TF assembled tunnels, the mechanical properties and deformation characteristics of the CF45 and CF90 assembled tunnels are more reasonable. (iv) The extrados and intrados joint opening deformation and shear dislocation of the 1.2 m wide general ring segment under the staggered assembly increase by 1.2 mm and 1.03 mm, respectively, compared with the 1.5 m wide segment, while the radial force, circumferential force, and bending moment are reduced by 24.4%, 36.5%, and 41.7%, respectively, indicating that the seismic performance of the shield tunnel with a segment width of 1.5 m is better than that of the shield tunnel with a width of 1.2 m.

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Section: Surrounding Rock-tunnel Interaction Boundary Conditions and ...mentioning

confidence: 99%

Section: Mechanical Behavior Of Shield Tunnel Joints Under Different ...mentioning

confidence: 99%

Section: Mechanical Behavior Of Shield Tunnel Joints Under Different ...mentioning

confidence: 99%

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Study on the Seismic Response Characteristics of Shield Tunnels with Different General Segment Assembly Methods and Widths

et al. 2023

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“…However, as the complexity and detail of pipeline BIM models increase, along with the numerous pipeline variants [15], challenges arise. These challenges are intensified by tight pipeline configurations, overlapping pipeline segments, and complex interactions with other infrastructure elements [16][17][18]. Therefore, rendering pipeline BIM models presents significant challenges.…”

Section: Introduction 1backgroundmentioning

confidence: 99%

A Web3D Rendering Optimization Algorithm for Pipeline BIM Models

Wang,

Huo,

Shen

et al. 2023

Buildings

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BIM (building information modeling) plays a pivotal role in the construction industry. BIM technology tailored for pipelines offers in-depth semantic information and spatial data, bolstering the utility and implementation of digital twin-associated technologies in both architecture and urban planning. This paper introduces a rendering optimization algorithm rooted in the BSP Tree (Binary Space Partitioning Tree). The algorithm is used to address the challenges of slow loading and poor rendering quality of pipeline BIM models when displayed on the web, which stem from large amounts of model data and complex geometric configurations. Initially, the algorithm delves into the geometric distribution traits of the pipeline BIM model from multiple perspectives, pinpointing the spatial division dimension. Subsequently, it employs an adaptive step size technique for spatial segmentation, harmonizing it with real-world application contexts. Concurrently, any superfluous data that emerge are refined to uphold the structural wholeness of the BIM model. This algorithm is adept at systematically arranging and overseeing the BIM model data. Trial outcomes reveal that the AKDT (Adaptive K-Dimensional Tree) algorithm significantly trims the browser’s initial rendering duration while maintaining the model’s accuracy and semantic uniformity. Moreover, it excels in areas such as rendering frame rate, user interaction responsiveness, and data transmission duration. In essence, the algorithm stands out for its efficiency and precision in rendering pipeline BIM models on web platforms, achieving the desired optimization results.

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Shaking Table Test of the Seismic Performance of Prefabricated Subway Station Structure

Tao

Shi

Ding

et al. 2022

Proceedings of the 4th International Conference on Performance Based Design in Earthquake Geotechnical Engineering (Beijing 202

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Three-dimensional seismic performance analysis of large and complex underground pipe trench structure

Cited by 22 publications

References 17 publications

Study on the Seismic Response Characteristics of Shield Tunnels with Different General Segment Assembly Methods and Widths

Study on the Seismic Response Characteristics of Shield Tunnels with Different General Segment Assembly Methods and Widths

A Web3D Rendering Optimization Algorithm for Pipeline BIM Models

Shaking Table Test of the Seismic Performance of Prefabricated Subway Station Structure

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