A5075048333- Geotechnical Engineering and Analysis
- Geotechnical Engineering and Underground Structures
- Geotechnical Engineering and Soil Stabilization
- Civil and Geotechnical Engineering Research
- Grouting, Rheology, and Soil Mechanics
- Underground infrastructure and sustainability
- Adsorption and biosorption for pollutant removal
- Structural Load-Bearing Analysis
- Structural Behavior of Reinforced Concrete
- Lignin and Wood Chemistry
- Drilling and Well Engineering
- Infrastructure Maintenance and Monitoring
- Simulation and Modeling Applications
- Electronic and Structural Properties of Oxides
- Phosphorus and nutrient management
- Chemical Synthesis and Characterization
- Tunneling and Rock Mechanics
- Perovskite Materials and Applications
- Masonry and Concrete Structural Analysis
- Advanced Photocatalysis Techniques
Northeastern University
2019-2024
Yulin University
2024
The small pipe–roof–beam method has better adaptability to ultra-shallow buried subway stations. Five groups of similar model tests were carried out explore the pipe–roof deformation, surface settlement, and beam strain caused by excavation using this method. Based on test results, a 3D numerical was established study deformation under different cases. following conclusions obtained: as height-to-span ratio increases, settlement increase and, afterward, decrease. Increasing number beams can...
This study presents a novel construction pre-supporting system for large underground space excavation with shallow depth, Steel Tube Slab (STS), in which adjacent steel pipes are connected by couple of flanges, bolts and concrete flexural capacity lateral stiffness the whole structure. The STS method is employed first time ultra-shallow buried span subway station China, during ground settlement structural deformation monitored. A numerical model established reliability verified monitored...
To address the inadequacies of traditional pipe-roof methods, steel support cutting pipe method (SSCP)—a novel that improves construction security and underground space usage—is proposed. further explore applications SSCP, its design scheme ought to be optimized. The failure mode mechanical behaviors SSCP were investigated through laboratory experiments. Subsequently, a series finite element models (FEMs) was established study deformation characteristics. Further, parameters proposed...
This study introduces a steel tube slab (STS), novel pipe-roof structure used in underground engineering, whose structural system affects the bending loading conditions during construction. However, previous transverse force of STS to evaluate overall structure, which results an unreasonable and material waste. The purpose this investigation is analyze longitudinal flexural performance through combination experimental numerical investigation, optimize key parameters. Firstly, by conducting...
The excavation of a foundation pit will break the original stress balance and affect surface settlement natural adjacent buildings, so deformation control is very important. In this paper, numerical simulation results additional caused by were compared with experimental to verify accuracy model obtain reliable ratio building width average particle size sand that was not affected effect. Then, distribution variation law studied test, relationship between depth load obtained.
Existing railways can no longer meet transportation requirements, and it is an urgent need to expand old tunnels. However, the existence of ventilations shaft makes expansions face greater risks. This study analyzed tangential stress change trend during expansion process through field monitoring, numerical simulation was used analyze changes in displacement under different depths width–span ratios. The results show that as one approaches tunnel face, arch foot side wall J-2 J-3 sections...
Jacking force is one of the important safety indicators during pipe jacking construction. Existing models for calculating are widely used in calculation with regular cross-sections. In this paper, considering pipe-soil interaction, cross-sectional characteristics and distribution between soil, equations circular steel flange plate were proposed based on pressure arch theory. The applied to calculate Olympic Sports Center Subway Station Line 9 Shenyang, China, results compared field...
Biochar was prepared using peanut shells as raw materials, and then composite amino-functionalized lignosulfonate used to prepare a biochar/lignosulfonate adsorbent (BC-CLS). The morphology structure of BC-CLS were characterized FT-IR, SEM, zeta potential, XPS. adsorption performance evaluated by batch experiments dynamic (adsorption column flow adsorption). results showed that exhibited significant for Cu
Relying on the Shenyang Metro Line 4 Shifu Road station, impact of construction parameters transverse pilot tunnel surface subsidence and pipe curtain deformation was first studied through numerical simulation, followed by analysis excavation characteristics on-site monitoring. The results show following: middle is key stage construction. sequence H2 H4 H6 → H1 H3 H5 H7 caused least subsidence. Increasing grouting width improving strength initial support can control very well, it reasonable...
The study of the distribution form and calculation method earth pressure on back wall a pilot tunnel under jacking reaction is very important to ensure safety smooth construction pipe jacking. Based metro station in Shenyang, this paper firstly investigates effects changes parameters, such as loading intensity, position, area displacement through numerical simulation, then proposes formula for calculating soil verifies it by comparison with FEA (finite element method) results. results show...
Biochar was prepared using peanut shells as raw materials, and then composite amino-functionalized lignosulfonate used to prepare biochar/lignosulfonate adsorbent (BC-CLS). The morphology structure of BC-CLS were characterized FT-IR, SEM, pHzpc, XPS. Static dynamic adsorption experiments conducted verify the performance on Cu2+ in solution. results showed that exhibited significant for Cu2+, including short equilibrium time (50 min), fast rate (7 mg g-1 min-1), high static saturation...