Open Access. Powered by Scholars. Published by Universities.®
Civil and Environmental Engineering Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Keyword
-
- Numerical simulation (6)
- Model test (4)
- 3D printing (3)
- Constitutive model (3)
- Dynamic characteristics (3)
-
- Failure mode (3)
- Mechanical properties (3)
- Moisture content (3)
- Slope stability (3)
- Uniaxial compression (3)
- Unsaturated soil (3)
- Acoustic emission (2)
- Analytical solution (2)
- Bearing capacity (2)
- Bedding (2)
- Calcareous sand (2)
- Confining pressure (2)
- Consolidation (2)
- Constitutive relation (2)
- Coral sand (2)
- Crack (2)
- Crack propagation (2)
- Creep (2)
- Damage (2)
- Damage evolution (2)
- Damping ratio (2)
- Deformation (2)
- Dynamic response (2)
- Energy evolution (2)
- Excess pore water pressure (2)
Articles 121 - 126 of 126
Full-Text Articles in Civil and Environmental Engineering
A Study On The Rainfall Infiltration Of Granite Residual Soil Slope With An Improved Green-Ampt Model, Yong-Liang Pan, Wen-Xing Jian, Lin-Jun Li, Yu-Qiu Lin, Peng-Fei Tian
A Study On The Rainfall Infiltration Of Granite Residual Soil Slope With An Improved Green-Ampt Model, Yong-Liang Pan, Wen-Xing Jian, Lin-Jun Li, Yu-Qiu Lin, Peng-Fei Tian
Rock and Soil Mechanics
Granite residual soil is widely distributed in southern China, and it has many poor physical and mechanical properties. Slopes of this type of soil are prone to deformation and failure under the action of rainfall. Therefore, it is of great significance to study the rainfall infiltration mechanism in granite residual soil slopes. On the basis of Green-Ampt model, the initial moisture content, underground water level and unsaturated characteristics of the soil are comprehensively considered. An infiltration model suitable for different rainfall conditions is established, and verified by comparison between numerical simulations and other models. Then, the proposed model is used …
Study On Dynamic Characteristics Of Cement-Stabilized Expansive Soil Subgrade Of Heavy-Haul Railway Under Immersed Environment, Yong-Hui Shang, Lin-Rong Xu, Yu Cai
Study On Dynamic Characteristics Of Cement-Stabilized Expansive Soil Subgrade Of Heavy-Haul Railway Under Immersed Environment, Yong-Hui Shang, Lin-Rong Xu, Yu Cai
Rock and Soil Mechanics
The dynamic characteristics of subgrade is aggravated under the interaction of immersed infiltration and dynamic loads of trains, which affects the safety of train operation and long-term stability. Based on the engineering background of cement-stabilized expansive soil subgrade of Hao-Ji heavy-haul railway(Haolebaoji-Ji'an), field excitation tests of subgrade with four million cycles were carried out under dry and immersed conditions to investigate the dynamic characteristics. Large-scale excitation equipment, combined with dead weights, were used to simulate the dynamic behavior of heavy-haul trains with 25-30 t axle load. The test results show that the variations of dynamic stress and acceleration along the …
A Practical Method Of Calculation Of Bearing Capacity And Settlement Of Large- Diameter Post-Grouting Piles, Zhi-Hui Wan, Guo-Liang Dai, Lu-Chao Gao, Wei-Ming Gong
A Practical Method Of Calculation Of Bearing Capacity And Settlement Of Large- Diameter Post-Grouting Piles, Zhi-Hui Wan, Guo-Liang Dai, Lu-Chao Gao, Wei-Ming Gong
Rock and Soil Mechanics
Based on the static load test data of 716 test piles collected from 139 projects, the practical calculation method of bearing capacity and settlement of large-diameter post-grouted piles was studied. The improvement coefficients of the side friction and base resistance of soil layer were given primarily based on statistics analysis, and the practical calculation approach for the bearing capacity of large-diameter post-grouted piles applicable to different grouting types was presented. The reliability of the proposed approach was verified by a large number of measured data. Moreover, the influence coefficient of post-grouting settlement was introduced based on the settlement calculation method …
Deformation And Fracturing Characteristics Of Fracture Network Model And Influence Of Filling Based On 3d Printing And Dic Technologies, Ke Zhang, Fei-Fei Qi, Yu-Long Chen
Deformation And Fracturing Characteristics Of Fracture Network Model And Influence Of Filling Based On 3d Printing And Dic Technologies, Ke Zhang, Fei-Fei Qi, Yu-Long Chen
Rock and Soil Mechanics
Due to the complexity of fracture distribution in engineering rock mass, the physical modeling of fracture network is one of the key problems in rock mechanics experiments. In this study, a 3D printing method of fracture network model based on water-soluble materials with polyactic acid materials as supporting base is proposed. Based on the water solubility of printing material, a method for preparing rock-like model specimens containing fracture network is established. Through digital image correlation (DIC) method, the deformation and fracturing characteristics of rock-like model specimens during loading process are quantitatively studied, and the influence law of filling material is …
Calculation Of Mean Intergranular Stress And Its Application In Unsaturated Soil, Zhao-Yang Song, Cheng-Gang Zhao, Chang-Fu Wei, Tian-Tian Ma
Calculation Of Mean Intergranular Stress And Its Application In Unsaturated Soil, Zhao-Yang Song, Cheng-Gang Zhao, Chang-Fu Wei, Tian-Tian Ma
Rock and Soil Mechanics
The physicochemical interactions between different phases of the soil have an important impact on the geotechnical engineering related to environment and energy. The principle of effective stress is always the most important and effective theory to solve the relevant problems. However, the change of inter-particle stress caused by physicochemical effects cannot be accurately described by current effective stress equation. In response to the above problems, a mean intergranular stress expression that uniformly describe capillary, adsorption and osmosis effects between soil particles has recently been proposed. The purpose of this research is to realize the quantitative calculation of the mean intergranular …
Study On Boundary Effect Of Embedded Optical Fiber Sensor In Tunnel Structure, Gong-Yu Hou, Zi-Xiang Li, Tao Hu, Tian-Ci Zhou, Hai-Lin Xiao
Study On Boundary Effect Of Embedded Optical Fiber Sensor In Tunnel Structure, Gong-Yu Hou, Zi-Xiang Li, Tao Hu, Tian-Ci Zhou, Hai-Lin Xiao
Rock and Soil Mechanics
To explore the boundary effect of the strain transmission between embedded optical fiber sensor and tunnel lining, the study was conducted from three aspects: theoretical, experimental studies and field applications. The results were verified in actual engineering. The strain transfer model of optical fiber in the concrete lining was constructed, and the mechanism of optical fiber strain transfer was analyzed. The strain transfer efficiency of optical fiber was then calculated and compared that with the numerical modeling results, which verified the accuracy of the mechanical calculation model. The concrete lining of tunnel was simulated with the reinforced concrete beams and …