Most papers are machine-translated to English; some are originally in English.
Showing 50 of 516 papers in Earth & Space
Yangtang Bridge is a single-tower, double-cable-plane, inward-inclined cable-stayed bridge with a total length of 607 m. The main tower features an H-shaped structure with a height of 65 m, and is equipped with 17 cables in total, among which cables 1-8 are cable conduits and 9-17 are steel anchor b…
With traffic pressure continuing to mount and travel volume increasing daily in our country, it is imperative to accelerate highway construction. To alleviate traffic congestion and reduce public travel burden, shallow buried tunneling construction must be implemented in highway projects to enhance …
To address the issue of inevitable subjective factors in determining surrounding rock index parameters using existing surrounding rock classification methods, six parameters were comprehensively selected as evaluation indices for tunnel surrounding rock classification based on a review of various cl…
To investigate the vertical bearing performance of bored piles in deep sand areas, this paper presents a field static load test conducted for a project in Wuhan, elaborates on the advantages of bored piles, and comparatively studies the test results of single pile vertical ultimate bearing capacity …
During railway engineering project construction, conducting tunnel construction in surrounding rock is prone to hazards such as rockfall and collapse, which may lead to safety and quality accidents. Therefore, this paper introduces safety risk assessment methods for surrounding rock tunnels in railw…
When conducting high-speed railway tunnel construction, engineering personnel consistently face the operation of risk factors in varying environments due to constraints imposed by geographical conditions and related technical means. In recent years, a series of safety accidents have frequently occur…
To investigate the dynamic response characteristics of deep-water bridge pier pile group foundations under wave-current coupling action, the JONSWAP spectrum was selected to simulate the nonlinear effects of waves, MATLAB software was used to program and solve the time-history curves of wave-current…
Ballastless slab track construction in turnout areas represents a critical core technology in high-speed railway engineering. Through a case study on the fabrication and installation of main-line turnout slabs at Zaozhuang West Station of the Beijing-Shanghai high-speed railway, this paper expounds …
With the rapid development of society, the transformation of educational concepts has emphasized a student-centered approach, with greater attention paid to students' individual development and innovative capabilities. In contemporary teaching space design, relatively more focus is placed on the ext…
Currently, the exterior space environments of most campus buildings in China generally suffer from deficiencies including a lack of spirit of place, insufficient campus landscape facilities, and an inability to manifest campus cultural spirit. Based on exterior space environment design theory, this …
This study investigates red mud tailings material, employing GCTS cyclic triaxial apparatus to conduct dynamic triaxial tests on red mud, examining its dynamic deformation and strength characteristics under varying consolidation confining pressures and consolidation ratios. Results indicate that wit…
Earth chamber pressure is one of the key parameters for controlling ground settlement. Based on extensive real-time data collected during shield tunneling construction, this paper proposes an earth chamber pressure prediction model for Earth Pressure Balance (EPB) shield construction using the "Rand…
Based on the close undercrossing of the existing Line 3 by the Jiucheng ventilation shaft—Chengxin Avenue station section of Nanjing Metro Line 5 TA01 bid, this paper introduces a series of targeted measures implemented during shield tunneling through soft strata under the condition of poor deformat…
The construction industry is undergoing a historic transformation through digitalization. BIM (Building Information Modeling) technology, with its characteristics of visualization, collaboration, and data-driven approaches, has become a core tool for enterprises to achieve cost reduction and efficie…
Design management in EPC renovation projects not only serves as the driving force at the project's initiation but also permeates throughout the entire project life cycle. This paper summarizes design management strategies for EPC renovation projects by citing actual engineering cases. Through compre…
As the proportion of aging population in our country accelerates, the silver economy emerges, making demands for medical care, elderly care, and social services critical issues that society should actively address. This study aims to explore pathways for enhancing the quality of life and environment…
With the continuous deepening of globalization and international exchange, overseas diplomatic architecture is playing an increasingly vital role in showcasing national image and facilitating international engagement. The Vietnam Hanoi Chinese Cultural Center, as a significant overseas project of ou…
Tailings dams constitute major hazard sources for metal and non-metal mines, and red mud represents a strongly alkaline tailing discharged during alumina extraction processes. In recent years, the number of tailings dams has been continuously increasing, with earthquakes serving as critical factors …
Based on the characteristics of small deformation theory, a new method for stability analysis of slope retaining walls under different rotation axis conditions is proposed (small deformation theory solution). For the slope body: based on the stress distribution satisfying the stress equilibrium diff…
Taking the water inrush event in the Wangjiazhai semi-lithified tunnel in Yunnan as the engineering background, this study analyzes the video characteristics throughout the entire water inrush process, selects a deep learning model suitable for identifying tunnel water inrush features, and utilizes …
As a pyroclastic rock, tuff finds extensive application in construction and engineering due to its dense structure, high compressive strength, and excellent durability. This study investigates the in-situ mechanical properties of tuff from sites in Shunxi (Zhejiang), Fushun (Liaoning), and Emin (Xin…
To provide appropriate and accurate shear strength parameters for the strongly weathered granite at a nuclear power plant site, field shear tests and laboratory simulated shear tests were conducted based on analysis of its fundamental characteristics. The study concludes that: the cohesion and frict…
Segment assembly, as a crucial procedure in shield tunneling construction, renders segment layout technology of significant importance for tunneling projects. Currently, layout techniques relying on designers' experience and traditional mathematical formulas exhibit low precision and efficiency. To …
To address the issues of harsh working environments, low efficiency for technicians, and insufficient adaptability to complex geological conditions in traditional rock mass in-situ test specimen preparation, this paper proposes an in-situ specimen preparation device based on high-pressure water-abra…
The Finite-Discrete Element Method (FDEM) is an advanced numerical computational method highly suitable for simulating the complete process of rock blasting and fracture. Considering that intact rock masses contain numerous joint surfaces, this study introduces a realistic joint constitutive model t…
Rockburst, as a serious geological hazard, frequently poses significant threats to tunnel stability and construction safety. Traditional circular tunnels under non-hydrostatic pressure conditions readily form localized stress concentration zones in the surrounding rock mass, which can easily trigger…
Rockfall disasters along highway slopes in China are characterized by wide distribution, high frequency, and sudden occurrence, presenting a challenge for prevention and control efforts due to the lack of reliable early warning indicators. This study innovatively proposes an electromagnetically cont…
Currently, high-performance computing for large-scale finite element methods primarily relies on parallel computing with multi-CPU computer clusters, which incurs high computational costs and offers limited improvements in computational efficiency. Based on the advantages of current state-of-the-art…
Soil arching effect; Expanding arch; Triangular slip surface; Limit equilibrium; Tunnel earth pressure
Sleeve valve pipe grouting technology has been employed for many years with numerous engineering applications. However, Guiyang Metro planning was initiated relatively late. To study the construction technical parameters of sleeve valve pipe grouting under the geological conditions of Guiyang, this …
To thoroughly investigate the degree of surrounding rock damage during the bench blasting process in tunnel engineering, this study takes a certain Grade II surrounding rock as an example, starting from the mechanism of crack generation in a single blasthole, exploring the interaction mechanism betw…
The Juji Tunnel of the Lida Expressway traverses complex and variable highly weathered, thin-bedded shale strata. The surrounding rock is inherently weak and fractured, with severe large deformation occurring after tunnel excavation. The overall stability of the surrounding rock is poor, and under t…
To investigate the seepage behavior in karst tunnel surrounding rock, the Yesanguan Tunnel of the Yi-Wan Railway was selected as the engineering case study. Key factors influencing surrounding rock seepage were identified through analysis of engineering data and literature review. An elastic damage-…
Karst geological regions, due to their unique geological structures and surface morphologies, frequently encounter hydrogeological issues such as water inrush, posing potential threats to the stability and safety of urban tunnels. This study investigates the impact of karst geological water inrush o…
Taking the Hulinjia Tunnel as a case study, the deformation characteristics of tunnel surrounding rock were thoroughly investigated through field monitoring methods, and corresponding support measures were proposed to ensure safe, stable, and normal tunnel operation. The research results indicate th…
The bench method exhibits significant advantages in saving construction time and improving mechanized operation levels, but has certain limitations in controlling surrounding rock stability and preventing deformation. To reduce the deformation impact of bench excavation on tunnel surrounding rock, t…
The Taixi Railway Heping Tunnel traverses fault fracture zones characterized by highly fractured rock masses in lithological contact zones, well-developed intrusive and fault structures, extremely poor surrounding rock stability, and a strongly water-rich environment, which renders water inrush and …
To investigate the advantages of shaped charge blasting compared to traditional smooth blasting in multi-jointed tunnels, four double-hole smooth blasting and shaped charge blasting models were established to study the influence law of the angle between joints and the line connecting blastholes on o…
Advanced geological forecasting was performed using the TSP203 equipment for the Heping Tunnel and Chongli Tunnel of the Taichong Section of the Taixi Railway. Building upon the analysis of existing geological data, geophysical prospecting methods were utilized to detect, analyze, interpret, and for…
Based on a deep foundation pit project for a cable tunnel, a numerical calculation model of the deep foundation pit and its supporting structure was established using MIDAS GTS NX software, and the numerical model was validated through analysis of field measurement data. The effects of parameters su…
Deep foundation pit support constitutes a critical component for ensuring safety in underground construction and stability of the surrounding environment, wherein the selection and application of appropriate technologies holds significant importance. Diaphragm walls, owing to their superior water-se…
In building foundation and substructure construction, ensuring safe production necessitates enhanced support measures for deep foundation pits to control deformation, collapse, and cracking of pit wall slopes, thereby preventing safety accidents. The application of interlocking piles in deep foundat…
Taking the deep foundation pit excavation of a certain cable tunnel as the research object, a numerical calculation model was established based on Midas GTS NX software, validated using field measurement results, and further employed to investigate the dewatering and deformation characteristics duri…
To address land resource scarcity in high-density urban environments, this study proposes a development technology system for ultra-deep underground space (-130 m) based on regular hexagonal honeycomb topology. Through collaborative design of a three-level road network architecture (main artery Φ30 …
With the advancement of construction technology, concrete members have become the predominant structural form in buildings. However, most ordinary concrete members operate in a cracked state, and the causes of crack formation are multifaceted. Therefore, classifying cracks based on their causes and …
To investigate the distribution characteristics and development patterns of the hydration heat temperature field in large-tonnage PC box girders during whole-span prefabrication, field monitoring and analysis of the hydration heat temperature field were conducted during the casting process of a 50 m…
Employing a long-term chloride salt wet-dry cycling test method, this study investigates the influence of different steel fiber volume fractions on the chloride ion transport properties of UHPC, and analyzes the temporal evolution of the apparent chloride diffusion coefficient and surface chloride c…
With the development of rail transit technology, shield tunneling machines grinding piles while undercrossing existing structures has become increasingly commonplace. Improper parameter selection can not only cause damage to shield machine equipment, but may even lead to secondary disasters such as …
Taking the foundation pit project of Tanggu Station on Line B1 in Binhai New Area, Tianjin as the engineering background, the confined aquifer water level in this region is significantly lower than the ground water level, and leakage effects occur under the influence of dewatering and excavation. A …
Research on the dynamic mechanical properties of coal rock has gradually become an active area of investigation; however, most dynamic loading experiments are completed instantaneously, precluding detailed study of failure and damage mechanisms. Therefore, this study employs LS-DYNA software to cond…
