bluuebunny/crossref_metadata_2025_split huggingface dataset:
Construction Monitoring and Numerical Simulation of Water-Rich Tuff Soft Rock Tunnel
Authors: Chen Fangliang , Zeng Kaihua , Li Xuejun , Xu Manqing , Dai Hongtao 
Published: March 2020

Abstract
With the rapid development of China’s high-speed railway construction, many difficulties have been encountered, and many difficulties and challenges have been encountered. Usually, there are safety accidents such as excessive deformation of the surrounding rock that causes serious intrusion, and even serious flooding, which not only restricts the construction period, Caused significant economic losses. The main reasons for these problems are insufficient understanding of the deformation mechanism of tunnel surrounding rocks, especially water-rich soft rock tunnels, and the lack of targeted control measures. This article takes the widely distributed tuffs in Zhejiang as an example. The tunnel deformation monitoring and measurement work can be used to grasp the dynamic evolution law of the surrounding rock. After the tunnel is excavated, the surrounding clearance of the surrounding rock and the settlement of the vault are determined. The key basis of process accuracy, the monitoring results are used to guide the next stage of construction and predict the deformation law of the surrounding rock in front of the palm face. At the same time, a finite element numerical model is established based on the surrounding rock structure of the tunnel to analyze the displacement and stress changes of the surrounding rock during the tunnel excavation process.
Study on the Scheme of Sensor Arrangement in Pseudo Static Test for Immersed Tunnel Joint
Authors: Cheng Xinjun , Xu Kunpeng , Liang Haian 
Published: March 2020

Abstract
The arrangement scheme of the sensors in a pseudo static test for an immersed tunnel joint was revealed in this paper. To achieve this target, the pushover analysis of the two immersion joint models were studied by using numerical calculation. The mechanical characteristics of the immersed tunnel joint under horizontal loading condition were carefully observed. According to the numerical results, shear keys and connecting part in tunnel elements are the key observation sections, the stress development, the shear capacity and the deformation features of the immersion joint should be measured. Furthermore, a loading system of pseudo static test for immersion joint is also developed. Based on the loading system and numerical funding, the locations for deploying sensors were determined. The scheme of sensor positions played a crucial role in guaranteeing the successful completement of the experiment, and also can offer some reference opinions for similar experiments.
Study on Propagation Characteristics of Seismic Wave in Rock Tunnel Excavation Blasting
Authors: Hao Xiaoping , Xu Yushan , Liu Hongshun 
Published: March 2020

Abstract
Based on the excavation of rock tunnel in Da’anshan coal mine, the paper carried out the vibration monitoring on blasting excavation is carried out in the rock tunnel. Through analyzing the time and frequency of the monitored blasting seismic wave by HHT transformation, the energy distributions of blasting vibration characteristics and seismic wave are obtained, which provides a strong basis for the establishment of rock absorption measures and safe excavation in rock tunnels.
Theoretical Analysis of Bearing Capacity for Shield Tunnel Reinforcement Structure
Authors: She Caigao , Zhang Bolin , Zheng Jun , Li Xiaoxin 
Published: March 2020

Abstract
Aimed at the bearing capacity of shield tunnel reinforcement structure, this paper conducts a series of research and theoretical derivations. First of all, the reinforced composite structure must meet some basic assumptions before any theoretical analyses. With the secondary stress analyses of the structure, the calculation method of the lag strain is derived. Adding this lag strain to the overall reinforced structure can make the strain of the whole section meet the plane hypothesis, and the overall structure can be analyzed from the strain diagram considering the lag strain. And then whether the steel bar and reinforced structure yield or not and their yielding sequence can give the shield tunnel reinforcement structure four typical failure modes under the ultimate limit state, according to which theoretical formula of the ultimate bearing capacity of various reinforced composite structure in different failure modes can be derived. At last, the result can be used to analyze the structure’s ultimate bearing capacity and convergence deformation.
Study on Excavation Disturbance Characteristics of High Ground Stress Soft Rock Tunnels
Authors: Li Jianhe , Yian Tianyou , Liu Qi 
Published: March 2020

Abstract
Based on the Xianglushan tunnel in The Central Yunnan Water Diversion Project, the stress, deformation, damage range and supporting structure bearing characteristics of the surrounding rock of the tunnel under different initial stress field are studied. It is shown that the stress, deformation, rupture range and supporting structure load of the surrounding rock are characterized by zonal distribution after tunnel excavation. The maximum principal stress transfer profile and deformation profile of the surrounding rock are basically perpendicular, and the deformation at the location of high stress concentration is small, while the deformation in the unloading zone is large. For the system anchor, the axial force of the anchor in the stress concentration zone is relatively small, and the axial force of the anchor in the unloading zone is relatively large. Therefore, according to the bearing characteristics of the supporting structure, the surrounding rock of the tunnel can be divided into different zones for different support. The related understanding and conclusions are of certain theoretical and engineering significance.
Classification Method of Small Reservoir in China Based on Risk Analysis
Authors: Zhou Yonghong , Bian Xiaoqing , Chen Yunping , Fang Weihua 
Published: March 2020

Abstract
In order to effectively manage more than 90000 small reservoirs in China, aiming at their characteristics, based on risk analysis, this article established a small reservoir dynamic risk Classification method and corresponding indexes including Safety risks factors and connecting with current specifications. in terms of the safety risk factors such as occurrence environment, structural materials, supervision and management, and accident loss. It solved the standardization and pertinence problems of small reservoir risk management in China.
Study on Water Damage Mechanism and Emergency Restore of Fill Subgrade upon Squashy Slope Foundation in Mountain Area
Authors: Zeng Yao , Wang Qi , Cao Jun , Liu Gang 
Published: March 2020

Abstract
This thesis takes the typical fill subgrade of squashy slope foundation of Qinglong-Xingyi Expressway in Guizhou Province as an example. Through engineering geological analysis, it was found that the topography and geomorphology conditions, formation lithology conditions and highway construction conditions were the basic conditions of water damage to highway subgrade, and hydrometeorological conditions are the direct cause of water damage of highway. Coupling calculation analysis using SEEP/W and SLOPE/W revealed the mechanism of short-term continuous heavy rainfall. When the short-term continuous heavy rainfall reached a certain level, the soil at the geotechnical interface reached saturation. At this time, the surge of pore water pressure at the geotechnical interface led to the sudden drop of effective stress, leading to the sudden decline of side slope stability, which was the starting condition for the formation of landslide caused by the water damage to subgrade. The implementation of emergency restore and the effect evaluation indicated that comprehensive treatment measures of the anti-sliding support combined with integrated drainage should be adopted for the prevention and control of the water damage to the subgrade. Underground drainage measures could effectively drain groundwater, playing a role in reducing groundwater level and pore water pressure in slip soil.
Study on Terrain Profile and River Incision Based on Buffer Grid
Authors: Sun Jiaqi , Tian Shufang 
Published: March 2020

Abstract
This paper proposed a new method for analyzing terrain profiles and river incisions. We used the buffer grids to determine the profiles. We selected Xianshuihe Basin as the study area. First, we performed a focus analysis on the buffer grid of the watershed, and determined the surface peaks and valley points. Then, we generated the peak line profile and valley line profile. Finally, we quantitatively calculated the depth of river incision based on the height difference between the two profiles. The result shows that the buffer grids can help us accurately analyze the terrain profiles and the river incisions. The incision depth of the river has a linear relationship with the ridge height of the marginal zone. Our research shows that the higher the surface uplift, the deeper the river incises.
Comparison Research on Modal Parameters Identification of Measured Vibration Response Signals of an Offshore Substation Platform
Authors: Chen Jiefeng , Sun Zhenzhou , Yuan Jianping , Jin Bo 
Published: March 2020

Abstract
It is difficult to simulate and forecast the operation and security of offshore substation platform in service through a numerical model. Based on the vibrational response signals measuring from offshore substation platform, one can monitor the real-time state of offshore substation platform after obtaining its modal parameters via automatic ERA and SSI modal identification methods. Considering the sophisticated composition of environmental loads, and vast quantities of data, it is hard to use the ERA and SSI method to procure the modal parameters of substation platforms directly. Therefore, the automatic modal parameter identification method, which can cope with these severe conditions at sea, is introduced for the sake of obtaining the frequency and damping of offshore substation platform. The results indicate that: by making a comparison between the modal parameters in the design stage and those in operational states, the method proposed in this paper can identify the frequency and damping of the offshore substation platform accurately. Consequently, it comes the conclusion that the security of the offshore substation platform is still safe. Anyway, the method proposed in this paper furnish designers with a new way to forecast the states of structures and improve their designs.
Study on Reservoir Optimal Operation in Heavy Sediment-laden Rivers
Authors: Xu Zhifeng , Huang Jianhong , Zhang Youli 
Published: March 2020

Abstract
The rivers in northern China have less water and more sediment, and the amount of incoming sediment is mainly concentrated in the flood season. In order to reduce the sediment deposition in reservoirs, study on reservoir optimized operation needs to be carried out. Traditional reservoir operation usually adopts a single normal pool level and a single flood control level, which does not take into account changes of the reservoir storage capacity with time. Due to the large capacity of the reservoir in the early stage of operation, the lower normal pool level can also meet the water supply demand. Therefore, it is possible to reduce the normal pool level and the flood control level. Reservoir capacity decreases in the later stages of reservoir operation. Increasing the normal pool level and the flood control level can increase the storage capacity. This paper uses a mathematical model to simulate the remaining capacity of the reservoir under different control operating levels. The results show that scheme 4 has the best results.
Numerical Simulation of Red Soil Water Infiltration under Bubbled Irrigation Condition
Authors: Zhao Xinyu , Wu Rongqing , Yang Yanfen 
Published: March 2020

Abstract
Based on the indoor bubbled irrigation experiment, the mathematical model of soil water infiltration is established according to the movement theory of unsaturated soil water, and it is solved by the software of HYDRUS-3D. The relative error between the simulated value and the measured value of soil water content is small, and the two values have good consistency, so the model can be used to simulate the red soil water infiltration under bubbled irrigation condition with HYDRUS-3D. The simulation result shows that the characteristic value of soil water movement increases with the increase of flow rate, and its latitude decreases with the time, the inflow is directly proportional to the migration speed of wetting front and the increase rate of soil moisture content, the relationship between soil water content and infiltration flow is equal proportion when the infiltration is stable.
Physical and Mechanical Properties of Grass-Planting Concrete for River Revetment Projects
Authors: Xia Qing , Jiang Hui , Wang Jinhui , Liu Yao , Cui Lijin 
Published: March 2020

Abstract
As an ecological material, Grass-planting concrete has been increasingly used in constructing bank revetment of the rivers, and the studies on the physical and mechanical properties of the concrete is key for more efficient application. This paper describes the physical and mechanical properties of the concrete through analyzing the relationship among cementitious materials, dry bulk density, compressive strength and porosity. The results indicated the grass-planting concrete could meet the requirements for the strength and plant growth of ecological bank protection of small and medium-sized rivers when the total amount of cementitious materials was greater than 526 kg/m3 or the dry bulk density was greater than 1700 kg/m3. There is a negative correlation between the compressive strength and the porosity. This work provides excellent technical support for the popularization and application of grass-planting concrete.
A Review on the Grouting Piles with High Pressures Used for Pollution Reduction
Authors: Liang Yantao , Wang Shijun , Wei Jianmin , Han Jianfeng , Wang Quan 
Published: March 2020

Abstract
Traditional bored drilling piles were often used in geotechnical engineering. However, its construction process is complicated, and the stability of the treated site and the bearing capacity of piles are unexpected. Importantly, the slurry produced in the construction process will cause the environmental pollution. This paper introduced the construction process, quality evaluation and bearing capacity calculation of a high-pressure grouting pile. In addition, this paper looked forward the application of the polymer materials and high strength concrete grouting piles for pollution reduction in power transmission and transformation engineer.
Research on Automatic Monitoring and Early Warning System Based on BIM Smart Infrastructure Risk
Authors: Du Changqing , Bing Bo , Mao Xintong , Liu Wei , Liu Yinying , Xu Qi 
Published: March 2020

Abstract
Aiming at the project of Jiangsu Zhongwu 500 kV substation, the finite element analysis of scaffolding engineering is carried out and the scaffolding construction monitoring platform based on BIM technology is established by using BIM technology to realize visual monitoring of scaffolding and the field monitoring data is processed and displayed in the form of chart, which provides the basis for scaffolding construction safety.
Application of Least-Squares Method to Time Series Analysis for 4DPM Matrix
Authors: Dong Mingwang , Huang Linfu , Wu Xueqin , Zeng Qingguang 
Published: March 2020

Abstract
In the past 10 years, considerable attention has been paid to PMBOKM, and it has combined with specific examples. However, quantitative methods are rarely used for analysis. We select Han River Estuary Waterway Engineering Project as a study case. Based on the relationship between the stages of the project management system, it tries to analyse the first five stages of matrix time series of 4DPM in the three major forms by the least squares method, and the method is divided into four steps to solve the matrix. In addition, the matrix is subject to function changes and transpose processing, and then solved by the least squares method too. According to the set solution method, the matrix can be solved, and eight cases can be obtained. By comparing the errors, under the condition of transposed matrix, the function of the most suitable for matrix transmission can be found. So, it is known that the method is feasible and effective in 4DPM model matrix analysis.
Research on Building Supply Chain Collaboration Model Based on BIM and Internet of Things Technology and Its Application
Authors: Zhao Likun , Tian Zhipeng , Yang Yaqin 
Published: March 2020

Abstract
The integration of BIM model and Internet of Things (IOT) technology will be more helpful to achieve the coordination and optimization of building supply chain information. This article focuses on the integration of building supply chain information based on the analysis of BIM-IOT technology principles and advantages. Based on this, a building supply chain information management model based on BIM-IOT technology was established. The collaborative management model consists of a data layer, a core layer, an interaction layer, and a domain layer. From the aspects of construction project planning, engineering design, building construction, and operation management, the detailed description of the collaborative supply chain information management under the BIM-IOT technology model mechanism.
Research on Comprehensive Benefits Evaluation of Prefabricated Buildings Energy Saving
Authors: Wang Juan , Wang Shitong 
Published: March 2020

Abstract
In order to gain a deep understanding of the comprehensive benefits of prefabricated building energy efficiency. From the three aspects of economic benefit, environmental benefit and social benefit, the Delphi method was used to screen out 12 indicators. A comprehensive evaluation system for energy efficiency of fabricated buildings was constructed, and the comprehensive benefits of various energy saving measures were evaluated by TOPSIS entropy weight model. The results show that the energy efficiency of energy system and equipment efficiency, passive design energy conservation and the balance of building energy consumption through the use of renewable energy systems and the replacement of energy-saving three energy-saving measures can promote the improvement of comprehensive benefits. The benefits of energy efficiency and energy efficiency through energy systems and equipment are most pronounced. Finally, the scientific and effective evaluation of comprehensive benefits evaluation indicators and evaluation methods was verified by examples.
ISM Based Method for Risk Management of International EPC Projects
Authors: Song Yimeng , Hao Shengyue 
Published: March 2020

Abstract
In recent years, with the continuous development of the international engineering contracting market, the industry’s requirements for projects have also increased. It has gradually evolved into an international engineering procurement model with higher risk response capabilities and more complex project models. Due to the long construction time, large scale, fixed contract amount and other characteristics of international EPC projects, China’s international EPC projects still face multiple risks. This paper uses an Interpretative Structural Model to analyze the risk factors of international EPC projects. Then, construct a project risk model to consider the optimal strategy of risk control from a holistic and systematic perspective. It also puts forward effective risk management and control measures to provide a reference for risk assessment under the international EPC project management mode.
Research on Key Technologies of Intelligent Integrated System for Architectural Design Enterprises
Authors: Fang Changjian , Lai Yifeng , Wen Zhongjun 
Published: March 2020

Abstract
With the development of intelligent technology adopt in construction industry, architectural design enterprises’ implementation strategies and situations of smart design attracted much more attention. For architectural design enterprises, studying on intelligent integrated system to meet design management requirements is the major way to solve pain points and difficulties in design management, improve design management efficiency, and complete the transformation and upgrade. By analyzing and researching on key factors that restrict design management of architectural design enterprises, this study innovatively proposed and achieved a multi-specialty collaborative design management control method, a digital collaborative audit method, and a resource library standardization method. It has reference value of development of intelligent technology in architectural design enterprises.
A Multiple Method of Monitoring for Rainfall Induced Landslide
Authors: Luozang Qingpai , Gan Jianjun , Zhou Feng , Xin Lingen 
Published: March 2020

Abstract
Landslide induced by rainfall is very common in the world, which seriously threatens the safety and construction. Taking the landslide on the right bank of the Xiajiang Water Control Project as an example, this paper carried out comprehensive monitoring of groundwater level, earth pressure, and surface deformation of the landslide analyzed the landslide formation mechanism and predicted the stability of the landslide. The results show that the rainfall infiltration caused fluctuations in the groundwater level of the slope, which caused the instability of liquefaction in the shallow surface layer, fluctuations in the reservoir reduced the stability of the slope. Groundwater activity between the bedrock and the soil-rock mixture controls the slope stability to a large extent. Based on the comprehensive impact analysis of these triggering events, it is considered that the slope is undergoing continuous deformation and needs to be landslide management.
Fabrication and characterization of wound dressings containing gentamicin/silver for wounds in diabetes mellitus patients
Authors: Bie Xinyu , Khan Muhammad Qamar , Ullah Azeem , Ullah Sana , Kharaghani Davood , Phan Duy-Nam , Tamada Yasushi , Kim Ick Soo 
Published: March 2020

Abstract
In this study, the dual functional wound dressings for diabetic patients were fabricated with the help of gentamicin/ cellulose acetate by electrospinning. The resultant nanofibers were functionalized with silver nanoparticles (AgNPs) on its surface by a simple facile wetting process. Herein, gentamicin (Ge) was used for the objective to heal the infection inflammation and Ag NPs were loaded for the antibacterial properties. The resultant CA/Ge/Ag nanofibers were characterized for morphology analysis, chemical interactions examination, release behavior, structure analysis and antibacterial efficiency by scan electron microscope/ transmission electron microscope, FTIR/XPS, ICP study, XRD study and disc diffusion method of antibacterial, respectively. Based on characterization results it was concluded that all samples of CA/Ge/Ag nanofibers showed the antibacterial properties and appreciable release behavior.