bluuebunny/crossref_metadata_2025_split huggingface dataset:
Research on Steel Slag Resin Mixture Used in Rapid Repair of Pavement Damage
Authors: Han Yafang , Wu Di , Xu Jie , Liao Zhike , Sun Yangyong 
Published: April 2021

Abstract
In order to explore the pavement performance of steel slag for pavement damage repair, steel slag, river sand and resin binder are mixed in proportion to prepare steel slag mixture. The test results show that the steel slag mixture has excellent high temperature stability, water stability, low water absorption and low expansibility. The engineering application shows that the steel slag resin mixture has no quality problem after being used to repair the pavement damage for half a year. At the same time, it can also solve the problem of environmental pollution caused by the solid waste of steel slag, which has good social benefits.
An Intelligent Algorithm of Operation and Maintenance Cost Based on BIM of the Utility Tunnel
Authors: Wen Zhongjun , Zhou Wenyong , Zhao Yijng , Zhao Lin 
Published: April 2021

Abstract
Through analyzing the relationship among the utility tunnel components, disaster risks and cost and the importance of BIM technology to integrated component information, disaster risk information and cost information, a component-disaster-cost data model based on BIM technology is built to realize dynamic recording of operation and maintenance cost and structured storage of operation and maintenance cost data. Based on the cost data model, the data flow of operation and maintenance cost analysis is established, artificial intelligence algorithm is introduced, deep learning, data analysis iteration is carried out, decision-making is assisted, and the healthy development of intelligent pipe gallery construction is promoted.
Artificial Ground Motion Input Based on Structural Dynamic Compatibility
Authors: Wu Zuoju , Li Honglei , Ou Yangfang , Duan Shusu 
Published: April 2021

Abstract
The artificial ground motion input currently used is arbitrary and uncertain. It can only consider basic elements such as magnitude and preliminarily estimated epicenter distance. This is in sharp contrast with the increasingly accurate calculation of structural seismic response. It is a bottleneck for the further refinement of ground motion research. In order to solve this problem, an artificial ground motion input mode compatible with the dynamic characteristics of the target structure is constructed. It can greatly improve the safety of the building in the architectural design stage without increasing the cost excessively. Obviously, the model is more targeted, safe and reasonable.
Out-of-Codes Seismic Analysis on a Science Museum under Rare Earthquake
Authors: Zhang Qiming , Liu Xingang , Zhao Yashuo 
Published: April 2021

AbstractTake the example of a science and technology museum where the upper part is a steel structure and the lower part is a concrete shear wall structure. The performance-based design goals of the structure under rare earthquake are put forward. The performance of the structure under rare earthquake is analyzed considering the joint work of steel and concrete structure. Results show that the structure can meet the performance goals, the structure is safe, and some seismic strengthening measures of the structure are given based on the results.
A 220KV Transformer Equipment Vibration Damping Calculation
Authors: Fang Xiangyang , Li Shiyong , Zhang Zihe , Ji Guangbin , Liu Mengxuan 
Published: April 2021

Abstract
Considering the current poor seismic performance of pillar equipment in substations, for pillar equipment transformers, the ANSYS software is used to establish the corresponding finite element model, and the analysis of the finite element model without and with the shock-absorbing device is carried out under the effect of earthquake through the time course analysis method. The results show that the overall seismic performance of the transformer equipment is significantly improved by installing the vibration damping device, and after evaluation by the safety factor method, the equipment without vibration damping device does not meet the safety factor requirements of the code but the equipment installed vibration damping dose.
Study on Numerical Simulation of Airflow Distribution in Hot Pump Drying Room of Peppercorns
Authors: Cheng Kaili 
Published: April 2021

Abstract
With the transformation of China’s agricultural development direction and the vigorous promotion of healthy green condiments, the demand for drying materials such as pepper powder, grain and fruit is increasing, while the traditional drying method is low in efficiency, long drying time, and materials are easy to be contaminated by sediment and various microorganisms. So this article use numerical method to simulate the heat pump drying room air distribution, by changing the internal disturbance conditions, different drying stage and the different initial conditions, characteristics of flow field inside the drying room changes, buoyant jet is analyzed in different initial velocity, initial temperature and the effect of flow field characteristics of Chinese prickly ash drying room; The purpose is to provide theoretical support and design guidance for the design of the hot pump-type pepper drying room.
Effect of Cross-Section Dimension on the Safety of Transmission Tower
Authors: Wang Mengyao 
Published: April 2021

Abstract
The safety of power transmission tower directly affects the supply of electricity. If the designed power transmission tower could not bear the strong wind, the collapse of transmission tower would lead to the power outage. In this paper, we analyzed the safety of transmission tower subjected to the strong wind of level 10 by using a finite element method. Commercial software Abaqus was used for simulating the mechanical response of transmission tower. Finite element model was introduced to complete the static analysis of truss structure. Ten kinds of cross-sections were chosen to assess the safety of transmission tower. According to the simulated results, both the maximum stress and the maximum displacement decrease with the increasing cross-section dimension. When the cross-section dimension is less than a certain value, the designed power transmission tower could not safe under the strong wind of level 10.
Interactive Landscape Renovation Based on Sustainable--Take the Tingrui U-ME Landscape Design Project as an Example
Authors: Zhang Yin , Yang Huihong , Wei Shiqing 
Published: April 2021

Abstract
In this paper, from the perspective of humanism, aiming at the existing buildings in the modern commercial space, the problem of the trap of consumerism, as well as lack of humanistic care in landscape and architecture, the landscape renovation design is carried out. We explored the people psychological experience in the commercial landscape, tried to integrate interactive elements, new materials, various energy savings and other methods into the commercial landscape, so as to improve the relationship between the commercial landscape and people, replace passive appreciation with landscape subjective initiative, further improve the harmonious man-machine environment, and build a beautiful and harmonious landscape environment.
Unified Wall Function and Application for Steady Turbulent Pipe Flow with Uniform Wall Roughness
Authors: Pan Wenhao , Liu Shihe , Shang Qin 
Published: April 2021

Abstract
A newly developed wall function for the velocity-profile of steady turbulent flow in various hydraulic regimes near rough walls was created. The wall function was then applied into two approaches to obtain the total flow energy loss (mechanical energy loss) of turbulent pipe flow. The energy loss values calculated through the above two approaches both predicted the experimental results well. The energy loss coefficient calculated through the second approach gave a more precise definition of the total flow characteristics than the Manning roughness coefficient as it was proved to be a function of the field statistics. It was furtherly found that this energy loss can be decomposed into the energy loss due to dissipation caused by molecular viscosity and the dissipation of turbulent kinetic energy, and that its density distribution falls mainly into the near-wall region.
Study on Unconfined Compressive Strength of Zinc Contaminated Soil Solidified by Magnesium Phosphate Cement under Acid Rain
Authors: Huang Zhanjun , Zhou Qihui , Liu Zunjing , Zhou Bohao , Zhou Hongli 
Published: April 2021

AbstractIn this article, through the preparation of artificial contaminated soil in laboratory and simulated acid rain pollution to zinc magnesium phosphate cement (MPC for short) solidified soil erosion, the unconfined compressive strength characteristics of a single heavy metal (Zn) pollution under the above conditions was studied. In addition, water glass was added to improve the acid resistance of magnesium phosphate cement solidified soil. The effects of the mixing ratio of curing agent (MgO/KH2PO4, M/P for short), initial pH value by simulating acid rain, and the water glass content on the physical and mechanical properties of solidified zinc contaminated soil were analyzed. Studies have shown that when M/P=4, solidified soil contaminated by zinc has better solidification strength and solidification effect than M/P=6; adding water glass can increase the unconfined compressive strength of solidification of zinc contaminated soil by cement. 4% water glass content has a better effect to improve the strength of solidified soil; When the cement with M/P=4 has better engineering characteristics and acid resistance than that with M/P=6. Therefore, water glass can improve the engineering properties of solidified soil contaminated by zinc under sour environment effectively.
Conventional Monitoring Methods and Improvements in Public Geohazard Monitoring and Prevention
Authors: Liu Yi , Zhao Binbin , Kong Xiaoang 
Published: April 2021

Abstract
Monitoring is the key part of public geohazard monitoring and prevention. However, the data quality obtained by current monitoring methods in public geohazard monitoring and prevention is poor. Although thousands of landslides are monitored, but the results can hardly be excavated. To solve those problem, by repeatedly groping and trying, we have improved the monitoring methods or devices in the aspects of macroscopic deformation, ground fissure, building cracks and groundwater. The following results are obtained: For macro deformation, taking photos with smart phone can monitor, storage and transfer macro deformation information. For ground fissure, high precision data can be obtained by construction solid piles and measuring with digital convergent- meter. The mortar strip can accurately reflect the ground cracking and solve the problem of crack closure. For building cracks, layout steel nails across the cracks and measure the distance with vernier caliper can obtain high precision data. The improved sticker method can obtain the deformation rate of wall cracks. For groundwater level, the water level data of low cost and high precision is obtained through the development of the multimeter water level meter.
Experimental Analysis and Study on the Effect of Glue Addition Rate on the Performance of Sponge City Permeable Brick
Authors: Chen Xiaoxia , Zheng Xianchao , Liu Changchun , Zhao Hanfei 
Published: April 2021

Abstract
Sponge urban construction has become one of the heated topics in the fields of science and technology, and faces many disputes. There are different opinions and cognitions to the connotations, objectives, contents and effects of sponge urban construction. But investigating its foundation of sponge city is the basis of the permeable brick. The purpose of this test is to find the optimum mix ratio of permeable bricks, that is, to make them have good permeability on the premise of satisfying certain strength. Through experiments, aggregate cement ratio is fixed; water cement ratio and gluing ratio are adjusted. The conclusion is that the best mixing ratio is aggregate cement ratio 3.5, water cement ratio 0.38 and gluing ratio 2%, which is to meet the requirements of the sponge city for the compressive strength and permeability coefficient of single brick.
Numerical Simulation on Thermal Performance of the Sinusoidal-Corrugated Solar Air Collector
Authors: Li Shuilian , Li Hong , Wei Xinli 
Published: April 2021

Abstract
Solar air collector is a heating device of using air as heat medium, and can be widely applied to solar heating, ventilating, dehumidifying and other fields. However, these devices also set low efficiency and large heat loss. How to further improve the thermal efficiency is always the goal pursued by researches. This article from the change of the absorb plate shape to begin, put forward sinusoidal-corrugated solar air collector, and the thermal performance of sinusoidal-corrugated solar air collectors was studied by numerical simulation with using CFD software, and conclusions shows that the thermal efficiency of parallel model is higher than that of vertical model by comparative analysis. Type S, type U and type X were studied by numerical simulation. Results show that type X is the best of three types.
Simulation of Point Source Pollution Transport Process in the Lower Yellow River during Non-Flood Season
Authors: Zhang Fangxiu , Wang Ming 
Published: April 2021

Abstract
The water body in Yellow river has poor ability to dilute and degrade pollutants during non-flood season due to less upstream inflow, which leads to pollution during non-flood season more serious than flood season. In order to evaluate the transport process of point source pollutants in the lower reaches of the Yellow River during non-flood season, a plain two-dimensional water quality mathematical model was established to simulate the horizontal and vertical propagation range of pollutants such as COD and petroleum below the outfall. Analysis of the migration regulation of pollutants in the river was performed. The results indicated that in the case without external pollution, the influence range of the emission of point source pollution during non-flood season is a certain range downstream of the sewage outlet. The concentration of pollutants at the outlet side is greater than that the other side until the distribution of pollutants across the section tends to be consistent, which provides technical support for assessing the impact of point source pollution on water environment during non-flood season.
Assessment of Coupled Effect of Steam Pipes on Seismic Analysis of Reactor Coolant System
Authors: Li Lijuan , Liu Zhenyu , Li Hui , Ye Xianhui , Ai Honglei 
Published: April 2021

Abstract
Reactor coolant system is connected with auxiliary pipes, surge pipes and steam pipes. In order to facilitate the dynamic analysis of reactor coolant system, it is necessary to decouple the pipes connected with the reactor coolant system. Although some international standards stipulating requirements for the decoupling of subsystems from the main system, in order to further explore the influence of decoupling steam pipes, the seismic response of reactor coolant system with or without steam pipes is simulated by using ANSYS program. Firstly, the modal analysis of reactor coolant system is carried out to analysis the influence of steam pipes on the resonant frequency of reactor system. Then, the standardized seismic dynamic analysis of reactor system with or without steam pipes is carried out. The nozzle load (inlet and outlet nozzle load of main device, such as reactor pressure vessel, steam generator, pump) and support load (of main device such as reactor pressure vessel, steam generator, pump) are output and compared. According to nozzle load and support load, it can be seen that the steam pipes have little influence on the seismic analysis of reactor coolant system, i.e. steam pipes can be decoupled in the seismic analysis of reactor coolant system.
Monitoring and Analysis of Ground Deformation in Mining Area Based on SBAS Technology
Authors: Li Qianwen , Yan Qianqian , Zhang Tongkang 
Published: April 2021

Abstract
In view of the serious harm and significant economic loss caused by large-scale surface subsidence in Huangling Mining area. Firstly, the surface deformation information was obtained by using the Small Baseline technology during 2007-2009 (ALOS-1) and 2018-2019 (Sentinel-1A), and then the deformation position and magnitude changes were compared in these two different periods, finally, the time series analysis of the surface subsidence funnel in the mining area was performed. The results showed that: (1) The average annual deformation rate respectively reached 360 mm/a and 480 mm/a during 2007-2009 and 2018-2019. It was found that compared with 2007-2009, the deformation position moved up in 2018-2019, and the deformation area and magnitude increased. Combined with the analysis of the mining area data, the Huangling mining area was in the early stage of mining from 2007 to 2009. As the advance of mining working face and the passage of time, the deformation position would move up in 2018-2019. (2) From 2018 to 2019, the most serious surface subsidence in the Huangling mining area was located in the northwest of Shuanglong Town, including Huangling No. 2 Coal Mine. The maximum cumulative subsidence reached 300mm. The results of the study indicated that the main cause of subsidence in this area was underground coal mining. The analysis of the deformation law provides a decision basis for the subsequent rational mining and treatment of the mining area.
Stability Analysis of Coal-Measure Soil Slope Based on Discrete Element Method
Authors: Wu Can , Zhang Bang , Zhang Hong 
Published: April 2021

Abstract
This paper uses the discrete element method to take the Pinglian high-speed coal-measure soil slope as the background, which uses PFC3D to calibrate the parameters, establishes the slope model, and analyzes the factors affecting the instability of the coal-measure soil slope from the granular meso-level. The results show that the discrete element method can be used to simulate the entire process of slope deformation and instability, and the sliding surface of the slope failure can be directly displayed through the displacement of the soil; the nature of the particles will affect the stability of the slope. The larger the particle size is, and the more irregular the composition of the soil particles are, the higher the safety factor of the slope is; the greater the slope is, the faster the safety factor decreases. When the slope is less than 1:0.75, the slope is relatively stable.
Algorithm for Vertical Bearing Capacity Calculation of Rock-Socketed Piles in Karst Area Based on Load Transfer Method
Authors: He Qinghua , Yu Zequan , Yue Weijie , Tan Weiyuan , Li Zhengkai 
Published: April 2021

Abstract
Due to the complex geological conditions and many influencing factors in karst areas, this paper conducted theoretical, experimental research and calculation analysis on the design and construction of engineering piles of bridge engineering in karst cave areas. An algorithm for vertical capacity calculation of rock-socketed piles in karst area based on load transfer method was developed. The results using this new method were analyzed and compared with the results from the static load test of three engineering piles in karst area, and the differences are relatively small. Through static load tests of pile foundation in karst area and study of the side resistance of rock-socketed pile in karst area, the friction resistance of rock-socketed pile and the effect of pile-end resistance, the bearing capacity characteristics of rock-socketed pile in karst area were obtained, achieving the load-sharing effect of cave roof in a rather scientific way. In view of the failure mechanism of the karst cave roof under the pile tip and the large proportion of lateral resistance of the rock-socketed pile, a calculation model for the stability of the karst cave roof under the combined action of the side resistance of the rock-socketed pile and the pile tip resistance is proposed.
Adaptive Infrastructure Management Technologies of the Oil and Gas Company, SONARA, of the Republic of Cameroon
Authors: Ondigui Messi E , Bikwe J J , Goureth M F , Chekushina T V 
Published: April 2021

Abstract
the purpose of my research is to put in place an adaptation technology to the Sonara company so that it can increase its production efficiency. SONARA is a processing type of enterprise for light type raw materials. However, heavy oil is currently being produced in Cameroon and there is a mismatch between the existing processing tool and the available crude oil. The enterprise is a semi-state company, most of whose shares are owned by the Republic of Cameroon, up to 80.29%: National Hydrocarbon Company, Stabilization Fund for Hydrocarbon Prices, National Investment Company and the Ministry of Finance. The state wants to increase the capacity of the refinery of finished petroleum products from 2.1 million to 3.5 million tons per year, and modernize all these infrastructures including its managerial system. the company aspires to live up to the expectations of the Cameroonian population and help the country which is advancing towards its emergence by 2035.The second phase of the modernization project, which has not yet begun, will consist primarily of the installation of a hydrocracking system to process heavy crude oil produced in Cameroon. The storage volume of SONARA is currently estimated at 132,500 m3.
Modeling the Lower Bound for a Marine Acoustic Waveguide with Elastic Bottom
Authors: Papkova Yu I , Papkov S O 
Published: April 2021

Abstract
At the present time, theory of sound propagation in a sea is based on the theory of non-ideal waveguides. In particular, plane-layered waveguide models are used as the basis for computer simulation of sound fields in inhomogeneous waveguides, where the unconsolidated sedimentary layer is of greatest interest. A characteristic feature of this layer is the presence of inhomogeneity in the physical properties and geometry of bottom, which cause local acoustic field perturbations. In the case when parameters of the waveguide are weakly dependent on distance, the use of plane-layered models proved to be fruitful. Such models are taking into account the geoacoustic properties of the bottom and the velocity profile of sound. The paper is devoted to the modelling lower bound of a waveguide with elastic bottom. It should be noted that solution for classical Pekeris waveguide contains branch line integrals, which to not allow us the method of particular domains to modelling waveguides with more complex structure of bottom. Thus we will consider a waveguide on a rigid basement, where sufficiently large elastic bottom layer with attenuation will adequately describe bottom properties. The solution for such waveguide does not presented in literature and may be a basis for modelling sound propagation in the waveguides with stepped elastic bottom.
Household Waste Recycling Technologies
Authors: Babaeva A A , Grigorieva E V 
Published: April 2021

Abstract
The paper touches upon the environmental issues of the modern civilization and the new technologies of waste recycling. The paper also dwells upon waste-free production where all the raw materials are transformed into products which is, at the same time, optimized in terms of process, economic, social and environmental criteria. There are also given the figures of increase of garbage volume in various countries including Russia. There are stated the most dangerous products of decomposition of plastic. In the article there are also considered the modern technologies of waste recycling which is the most prospective way to solve the issue of urban landfills. There are given the examples of recycling of combustible waste, rotting waste, medical waste and old cars without harming the environment.