bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Elevation Effect of Blasting Vibration in Step Slopes
Authors: Xiao-jun Zhang , Bao-cai Ma , Zheng Wei , Jian-jun Shi , Shao-lin Li 
Published: September 2019

Abstract
Vibration caused by blasting is an important factor affecting the safety of blasting production and the stability of slope rock mass. This paper conducts on-site blasting vibration measurement and concrete model blasting vibration test. It is concluded that the elevation has both amplification and attenuation effects on blasting vibration. And the attenuation effect is dominant, and the amplification effect is supplemented. In the region where the elevation amplification effect appears obvious, the magnification increases with the increase of the elevation. The law of change is first increased and then decreased.
An improved analysis model for cantilever failure of composite riverbanks and collapse simulation
Authors: Tao Guilan , Chen Jie , Pan Yuepeng 
Published: September 2019

Abstract
The riverbanks in the Lower Jingjiang Reach are mostly composite ones with fine sand overlain by cohesive clay, thus when the sandy layer is undermined due to rapid erosion, the cohesive upper layer generates a cantilever and is prone to beam failure. In this study, the formula of critical width of cantilever failure was improved considering the hydraulic effects. The formula of accumulated width of failed blocks at bank foot was deduced. A collapse analysis model of composite banks was subsequently proposed, and the collapse process of a typical bank slope was simulated using the model. The conclusions include: The cantilever failure of composite riverbanks is more prone to occur during the period of water level decline than that of water level rise. The critical width of cantilever decreases with the dropping of river level, the weakening of the supporting role of river water and the enhancement of the overturning effect of groundwater. The thicker the cohesive layer is, the greater the decrement of its critical overhang width is as river level decline. The protective effect of failed blocks accumulated at bank foot reduces its erosion distance, the more times the bank collapse takes place, the greater the impact is.
Deformation analysis of retaining structure of deep foundation pit in soft soil under over-excavation
Authors: Wang-Yan  , Zhang-Fei  
Published: September 2019

Abstract
In the construction of deep foundation pits in soft soil areas, over-excavation of foundation pits and failure to set up support in a timely manner often occur. Due to the creep properties of soft soil, the envelope structure will be sharply deformed and cause engineering accidents. With the secondary development program of the elastic-viscose-plastic constructive model, simulate the conditions of normal construction and over-excavation of foundation pit in Soft clay area, analyze the time change regulation of retaining structures and safety state of foundation pit, in order to achieve effective control of the deformation and protect the buildings adjacent to foundation pit.
The Method of Diagnosis for Corrosion Hydraulic Gate Based on Strain Mode and Frequency
Authors: Dong Xian , Li Yunan , Yu Zewen 
Published: September 2019

Abstract
The gate is important equipment of hydraulic structures. However, the special underwater working environment of the gate would cause corrosion of the in-service gate inevitably. The corrosion of steel would lead to the decrease of static bearing capacity and the instability of dynamic performance of gate structure. Therefore, in recent years, more and more studies on gate corrosion have been carried out. The hydrodynamic effect has an important influence on the dynamic performance of the gates under water operation, which include natural frequencies and modes. It is worth noting that the variation of the natural frequency and the mode have been used as the overall indexes of the steel gate in the structural inspection. These indexes are insensitivity to the detection of local pitting corrosion, and strain mode is better than these overall indexes. In this paper, the finite element dynamic analysis of the radial gate has been carried out by considering the fluid-solid coupling effect, and the arm has been taken for the corrosion simulation. It is found that under the condition of small area corrosion, the natural frequency of the steel gate did not change significantly. The local evaluation index of the strain mode (the change of the strain mode around the corrosion was obvious) could clearly determine the corrosion position of the steel gate.
The Indoor Model Test on the Characteristic of Expansive Soil Slope under Climatic Conditions
Authors: Zhai Ju-yun , Ma Ming-jiang , Hao Xiao , Zhao Jin , Zhao Yu , Yang Qi-qi 
Published: September 2019

Abstract
An indoor model of expansive soil filling slope is tested in Pingdingshan city, Henan province, China. Using temperature and humidity detectors, earth pressure cells and so on, the static evaporation - rainfall infiltration cycles are tracked and monitored in the climate condition. The study suggests that atmospheric temperature is the direct cause of soil temperature. Due to the convection heat transfers, the surface temperature of the soil changes rapidly, and the temperature change of the heat transfer to the interior has a hysteresis phenomenon. Under surface evaporation conditions, the greater the depth is, the smaller the change range is in water content. Water loss rate is related to soil, air flow, temperature and humidity, cracks, soil water holding capacity, permeability and other factors. The change of stress in the expansive soil slope is the result of the joint action of soil water content, nature and climatic conditions. Due to the early erosion of rainfall, soil pressure is obviously attenuated. The soil pressure is on the rise due to the effects of rainfall infiltration and expansion force in the late rainfall. In the engineering, the key to prevent and cure engineering disaster of expansive soil is to improve the deformation characteristics and reasonable drainage of expansive soil.
Simulation of Two-Dimensional Temperature Field via Kriging Method Based on Limited Conditioning Points in an Arc Dam
Authors: Zheng Dong , Du Ze-Kuai , Peng Shao-Cai 
Published: September 2019

Abstract
Temperature in an arc dam is a critical quantity of interest in safety monitoring. How to estimate a temper-ature field for an arc dam has been a challenging task, particularly when only a limited number of ther-mometers are arranged. This paper proposes to use the ordinary Kriging to estimate the two-dimensional temperature fields based on limited monitored temperature data from thermometers in an arc dam. The Kriging method interpolates the temperature field between spatially distributed values of temperature. The effects of scale of fluctuation (δ) and correlation structure on the estimated temperature fields are examined. The results indicate that the Kriging method can estimate the temperatures at locations where the thermometers are not arranged. The estimated temperatures near the measuring points have higher accuracy. The estimated variances near the thermometers are lower than the variances far away from the thermometers regardless of the δ. When the δ is high, the data from conditioning (known) points can reduce the uncertainties of estimated temperatures near the known points. The distributions of tempera-tures using different correlation structures are quite similar. The δ has obvious effects on the smoothness of the temperature fields, contours and variances.
Study on crack propagation based on extended finite element and optimized adhesion structure
Authors: Qi Xili , Song Shuai , peng Yujie , Wang Daihua , Wu Haike , Xu Yi , Wang Shiyang 
Published: September 2019

Abstract
The basis of numerical simulation in this paper is discontinuous finite element analysis named extended finite element method. The description of the theory is helpful to understand the basis for the realization of cohesive constitutive relation in software. The characteristics of linear cohesive constitutive relation, bilinear cohesive constitutive relation, turning point and implicit function cohesive constitutive relation are studied. A new cohesive constitutive relation is optimized with analysing the advantages and disadvantages of each cohesive constitutive relation. Comparing the experimental results of classical mode I crack propagation with the numerical simulation of the cohesive constitutive relationship, show that the simulation results of the optimized constitutive relationship are closer to the experimental structure than those of the bilinear constitutive relationship. Optimized cohesive constitutive model is used to simulate an asymmetric four-point bending beam with a single notch. The results show that the crack propagation trajectory is highly consistent with the experimental structure. The rationality of optimizing the cohesive constitutive relation is verified by comparing two experiments.
Short-term Vehicle Speed Prediction by Time Series Neural Network in High Altitude Areas
Authors: Shi Feng , Wang Yong , Chen Jun , Wang Jian , Hao Yanjun , He Yulong 
Published: September 2019

Abstract
Vehicle driving conditions at high altitudes are quite different from those in plain areas. Accurately predicting the speed of vehicles traveling at high altitudes is of great significance for the development of vehicle safety assisted driving. In order to study the vehicles’ speed of highways in high-altitude areas, and predict the speed of vehicles accurately, more than 30 000 data were collected by a medium-sized SUV in Qinghai under typical adverse environmental conditions. The real-time vehicle status data (engine speed, engine torque, transmission gear, throttle opening), road alignment data, and historical vehicle speed data was denoised by wavelet method. The collecting data is time-varying and nonlinear characteristics. A nonlinear auto-regression with exogenous inputs (NARX) dynamic neural network prediction model was established in this paper to fit travel speed. The network model after training has small error and high fitting degree. The accuracy of vehicle speed prediction in the next five seconds is 96.01%. The root mean square error of prediction is less than 2.21 km/h, which can achieve better prediction effect. At the same time, the transplantability of the model is enhanced by taking altitude and road alignment as variables.
Study on Residual Displacement of FPB bearing in Long-span Continuous Girder Bridge
Authors: Song Shuai , Qi Xili , Qian Yousheng , Tan Liangliang , Zhou Lvyang , Peng Yujie 
Published: September 2019

Abstract
Based on the principle of mechanical equilibrium, the theory of FPB with residual displacement is analyzed. This analysis derives the stiffness and equivalent damping ratio of FPB with residual displacement, and constructes the hysteretic model with residual displacement according to the existing hysteretic model of FPB. Through midas/civil modeling and analysis, the influence of different friction coefficients on the residual displacement of FPB is studied. When the friction coefficient is small, the distribution of residual displacement of FPB bearings is directional; the positive residual displacement is positively correlated with the friction coefficient, and the negative residual displacement gradually changes to the direction of seismic wave input with the increase of friction coefficient, first decreases and then increases. The positive and negative residual displacements after aftershocks are the same as those after main shocks, and their variation with friction coefficient is related to aftershocks intensity. By analyzing the hysteretic curves of different residual displacement bearings, the correctness of theoretical analysis is proved. At the same time, it is concluded that the larger the residual displacement, the more vulnerable the bearings are to instability, which leads to the failure of the main beam. The study of residual displacement can provide theoretical basis for selecting friction coefficient and controlling residual displacement in FPB design.
Parameters sensitivity Analysis of the Duncan-Chang Model Based on Orthogonal Test
Authors: zhiyu Song , lili Dong , zhengxiong Bai , bin Li 
Published: September 2019

Abstract
This paper aimed at the problems of huge computation burdens and poor accuracy because of too many parameters in the embankment dam’s inversion. Authors designed a mixed-level test for eight parameters of the Duncan-Chang Model: K, n, Rf
, Kb
, m, c, φ
0, and Δφ through an orthogonal test method and numerical analysis with FEM. Using the different directional displacement of two nodes and principal stress of element as the test index and through variance analysis, we can conclude that K, Kb
and φ
0 are sensitive parameters which control the strain and stress of dam, and which should be accurately obtained by back-analysis.
Landscape planning and design of tourist highway service area under the background of all-for-one tourism system
Authors: Yang Zhihua , Jin Fei , Shou Jiaojiao , Yang Yunxing 
Published: September 2019

Abstract
Nowadays, service areas are increasingly difficult to meet the demand of high quality services. According to the characteristics of tourist highway service area demand, and analyzed the concept of all-for-one tourism system, the paper expounded the classification of tourist highway service area and key points of layout, summarized the functions and facilities of different service area, putted forward the service area of landscape planning and design requirements. It can provide a reference for other tourist highway service area landscape planning and design.
Research on the mechanism and testing technology of dynamic compaction of high-filled gravel soil roadbed
Authors: Zhang Lu , Yang Guangqing , Zhang Dongliang , Hou Licheng , Jin Jing 
Published: September 2019

Abstract
The dynamic compaction method is an important method for roadbed compaction treatment. Due to its simple procedure, quick construction speed, material saving, low cost, and excellent effect, it is an extremely important procedure in the roadbed construction with gravel soil. By analyzing the structure of the embankment, structural characteristics of the gravel fill and the the engineering stress characteristics of the subgrade in the mountainous area, the macroscopic and microscopic reinforcement mechanisms of the dynamic compaction is analyzed by using three waves transfer procedure. The results show that the various waves do positive to the gravel-filled foundation in the mountainous area. However, the way of contribution is different. The analysis should be focus on the effect of dynamic consolidation, which is the result of the synergistic action of three waves. Based on the Ping-zan highway project, the details of the test and the operating process have been introduced. Also, references for roadbed dynamic compaction reinforcement construction under similar conditions have been provided.
Research on Cost Management of International Contracting Enterprises under the Background of “Belt and Road”—— Based on Value Chain Perspective
Authors: Zhou Wenwen , Yang Yi 
Published: September 2019

Abstract
Under the “Belt and Road” strategy, there are more and more foreign contracted projects in China, so the requirements for cost management of international contracting enterprises are getting higher and higher. This paper provided new ideas for the cost management of international contracting enterprises based on the perspective of value chain. Firstly, the value chain and cost management theory of international contracting enterprise were deeply analyzed, and then the cost management model for international contracting enterprise based on the value chain perspective was constructed. The value chain optimization method was also proposed to realize the goal of international contracting enterprises to enhance the market competitiveness.
Rationality Analysis of Continual Improvement of a Simply Supported T Beam Bridge
Authors: Yalin Yang , li Dai , Xianglin Jiang 
Published: September 2019

Abstract
A 40m prestressed concrete simply supported T beam in continuous transformation and reinforcement, because the T beams is thin, and there is no suitable T concrete diaphragm that can share the anchorage force, can not guarantee the reliability of prestressed anchoring system. This paper puts forward a new method to construct the pier top continuous transformation, and analyzes and discusses the rationality of the two construction schemes. Midspan construction loading and bearing pre-top construction reformation have not improved the T beam bearing capacity, which can improve the force of the structure, the calculation results show that the bending moment is close to the bending capacity of the middle span after the continuous transformation., and improve the effect is not obvious. In addition, the continuous structure and a new type of pier top continuous structure can not prevent the cracking of the pier top, and there is a risk of increasing the midspan deflection of T beams in the construction
Profit Distribution Strategy of Cooperation Construction Supply Chain under Carbon Tax Policy
Authors: Jiang Wen , Wei Manke , Wu Wenjing 
Published: September 2019

Abstract
Based on the background of carbon tax policy, this paper studies the optimal emission reduction decision and profit distribution strategy of the secondary construction supply chain composed of a general contractor and a subcontractor. By establishing the profit distribution model of the construction supply chain, the optimal emission reduction, the construction supply chain and the maximum profits of enterprises under the two conditions of decentralization and centralization are obtained, and then the comparative analysis of the two is conducted to obtain the reasonable range of the profit distribution proportion of the construction supply chain under the centralized situation. The results show that the full partnership has a positive effect on enterprises to take action to reduce emissions, and the reasonable profit distribution proportion is helpful to the construction of supply chain profit and the improvement of enterprises’ profit.
Compressive characteristics of geogrid-reinforced steel slag
Authors: Wang Liyan , Li Jinsong , Tao Yunxiang , Wang Qi 
Published: September 2019

Abstract
Steel slag is a solid waste from industrial recycling that is granular and has similar characteristics as those of soils. Geogrids could improve the stability of the granular steel slag, and the technology of geogrid-reinforced steel slag (GRSS) is proposed here. To understand the engineering behaviours of geogrid-reinforced steel slag (GRSS) as a foundation treatment method, it is first important to consider its compressive deformation behaviour. The compression deformation behaviours of GRSS were investigated by carrying out uniaxial compression tests. Furthermore, the compressive moduli of the GRSS were compared with those of traditional soils. The comparisons indicated that the reinforced effect of embedding a two-layer geogrid in the steel slag was the best, which was consistent with the conclusions of other studies. The comparisons also indicated that GRSS had a good compression resistance and had potential as a geotechnical backfill technology.
Embankment dam leakage detection by joint use of Magnetic Resonance Sounding and Electrical Resistivity Imaging
Authors: Hongen Li , Zheng Li , Haifeng Xu , Ning Zhou , Yongjun He 
Published: September 2019

Abstract
Embankment dam leakage may cause devastating consequences and its early detection plays a significant role in the stability of embankment dam. Conventional dam leakage detection methods, such as piezometric tube or osmometer, are restricted by limitations of spatial distribution and high costs of instruments. This paper introduces the method of joint use of Magnetic Resonance Sounding(MRS) and Electrical Resistivity Imaging(ERI) to investigate embankment dam leakage. MRS and ERI are carried out to reveal embankment dam leakage in the same site and the stratigraphy of electrical conductivity obtained by ERI is carefully used for the inversion process of MRS data. And then the amount of groundwater in the subsurface can be directly determined by the technique of MRS. The MRS and ERI results show good consistency with yield data obtained by geological survey. Finally, the detecting capability of joint use of MRS and ERI is verified.
Sediment-carrying capacity prediction using extreme learning machine
Authors: Wei Xianglong , Li Chang , Huang Wei , Gu Jiyi , liu Jing , Zhu Mingcheng 
Published: September 2019

Abstract
Sediment-carrying capacity prediction is an important part in the river sediments movement simulation. In this paper, a novel machine learning approach was proposed to predict the sediment-carrying capacity by using the Extreme Learning Machine (ELM). The evaluation indexes and the average errors of these prediction models were analysed in detail. The result shows that the ELM model has a good generalization performance for the sediment-carrying capacity prediction, and the ELM approach could be an effective tool for the sediment movement simulation.
Earthquake-induced landslide susceptibility mapping: Application and Comparison of Frequency Ratio, Logistic Regression, Weight of Evidence and Support Vector Machine
Authors: Zhou Suhua , Zhang Yunqiang , Xing Jingkang , Chen Changfu , Fang Ligang 
Published: September 2019

Abstract
This study seeks to use the following GIS-based (Geographic Information System) models for earthquake-triggered landslides susceptibility mapping: frequency ratio (FR), logistic regression (LR), weight of evidence (WE) and support vector machine (SVM). The case of April 20th, 2013 Lushan earthquake in China was employed and analysed by using these GIS-based models to produce landslide susceptibility maps. An inventory containing 1289 landslides related to this earthquake was randomly divided into two parts: 70% for training and the rest 30% for testing. Seven thematic layers representing landslide predictive factors were used in the models to produce the landslide susceptibility maps. The results are validated using two indexes: the relative landslide density (RLI) and area under the receiving operating characteristic (ROC) curves (AUC). Results of RIL showed that in general, all six models were reasonably accurate and the SVM models relatively performed better in earthquake-triggered landslide susceptibility mapping. The AUC values showed that the SVM (RBF) model provided the highest success rate (91.2%) and the second highest prediction rate (79.4%), while the SVM (polynomial) generated the second highest success rate (87.6%) and the highest prediction rate (82.0%). Results using FR model gave the lowest AUC values of 0.727 in success rate and 0.734 in prediction rate. The LR and WE model produced approximate values in success and prediction rate. The resultant landslide susceptibility maps would be helpful for regional planning and reconstruction in this earthquake-prone area.
Research on safety impact analysis and Countermeasures of geological Disaster for China-Pakistan Karakorum Highway
Authors: Tian Jian , Li Zhiqiang , Luo Zhigang , Shao Hui 
Published: September 2019

Abstract
Safety problem of highway construction is serious because China-Pakistan Karakorum Highway is located in the mountains, deep valleys, steep terrain, and variety of geological disaster types are widely distributed. On the basis of analysis of geological disaster types and consequences, researching the influence of the geological hazards for construction of bridge, tunnel and etc., corresponding risk control measures are put forward.