bluuebunny/crossref_metadata_2025_split huggingface dataset:
Typical asphalt pavement dynamic response simulation at the action of dynamic load with multi-steps loading method
Authors: Hu Peng , Cheng Yingcai 
Published: July 2020

Abstract
The dynamic response of a typical pavement subjected to a dynamic load is important. Dynamic moduli of asphalt mixtures, cement treated crushed stone and lime treated soil are tested in the lab. The finite element model is established based on the dynamic modulus. The dynamic load is applied to the pavement structure by the loading steps method and then the pavement response is calculated. The pavement structure model was built in the lab and pavement structure responses are tested under the action of dynamic load which was applied by large size MTS. Compared with the results in the lab, simulation results are verified. By analysis of the simulation results show that: the tensile strain at the bottom of the surface and base under the action of the dynamic load is obviously smaller than the strain under the action of static load, deflection also follows that. In some special cases, the tensile strain at the bottom of the surface and base under the action of the dynamic load may exceed that under the action of static load.
Research on lamp distribution parameters of interior zone of high altitude highway tunnel based on lighting energy saving
Authors: Xie Wenjing , Wu Yue , Chen Mingyang , Li Qi , Wang Qianyue 
Published: July 2020

Abstract
According to the lighting energy-saving standards of plateau tunnels, the optimal lighting parameters in the middle segment of the highway tunnel is investigated under the conditions of plateau environment. With the minimum total power consumption as the target and the tunnel driving safety as the basic conditions, this article sets up parameter models of centerline layout, centerline sideways, symmetrical sides, and staggered sides in total 4 styles of distribution lights in tunnel interior zone. It is divided into different groups, each of which simulates 15 sets of parameters with different lamp spacing and compares the average luminance of different lamp forms and spacing conditions. The results show that: under the same spacing, the luminance of staggered sides arrangement is the highest, and the effect of centerline sideways is the worst. With the increase of the altitude, the safe lamp spacing decreases. The spacing of distribution lights in the middle section of the tunnel with the altitude of 2000m, 3000m, 4000m and 5000m is 47.5m, 42.5m, 37.5m and 35m respectively.
Research on BIM Virtual Technology based on CDIO Model in soil Mechanics of Application-oriented Universities
Authors: Pan Chonggen , Chen Keyu , Shen Xinyuan , Wang Wenjun , Zha Zhixiang , Peng Wei 
Published: July 2020

Abstract
As an important and basic course of civil engineering, soil mechanics has a wide range of contents and complex basic concepts, which puts forward higher requirements for students’ theoretical level besides theoretical mechanics, material mechanics, structural mechanics and other knowledge. Under the current background of new engineering, applied colleges and universities have put forward new requirements for engineering students. As a basic course of civil engineering, soil mechanics is of great significance to the training of students majoring in civil engineering. Aiming at some problems in soil mechanics education in recent years, based on CDIO mode, combined with the virtual simulation technology of BIM and the connotation of higher soil mechanics, the solutions are put forward in order to provide reference for the teaching reform of soil mechanics in colleges and universities.
Analysis and Calculation of Lining Water Pressure of High Water Pressure Karst Tunnel
Authors: Zhang Zhien , Huang Mingli , Wang Chenglin , Jiang Bo , Guan Qiang 
Published: July 2020

Abstract
Karst stratum is one of the most difficult geological conditions encountered in the process of tunnel construction. In addition to the risk of water and mud gushing during construction, there are also diseases such as leakage and cracking of lining structure caused by high water pressure. Based on the new Yuanliangshan tunnel project, this paper uses the analytical calculation method to study the influence of the change of tunnel seepage and water pressure on the water pressure behind the lining during the construction process, and draws a conclusion: increasing the thickness of the grouting ring and reducing the permeability coefficient of the grouting ring can reduce the seepage volume of the tunnel, and then reduce the water head behind the lining. The tunnel drainage and the water pressure behind the lining are linearly negative correlated. Based on the above study, it is suggested that the new Yuanliangshan tunnel adopt the grouting scheme of water blocking and drainage limiting to deal with the high water pressure in karst stratum. The thickness of grouting ring is 5m, which has the best water blocking effect and economic benefit, and can ensure the water pressure behind the lining is within its bearing range.
The Influence Of Different Grouting Methods On the Surface Environment Of Short Clear Distance Tunnel
Authors: Huang Mingli , Zou Changlei , Meng Zhaohui 
Published: July 2020

Abstract
Based on a four-line parallel short-clearance subway tunnel in Beijing, this paper takes the finite element method to thoroughly conduct research on the ground settlement caused by the parallel short-clearance tunnel construction. It simulates the effects of four types of reinforcement methods for deep hole grouting reinforcement, deep hole grouting and radial grouting reinforcement, reinforcement of anchor rods, and deep hole grouting reinforcement for tension anchor rods on ground settlement under different clearance conditions. The conclusions suggested that the effect of controlling the ground settlement decreased which proved that the reinforcement of tension anchors is the best, followed by deep hole grouting reinforcements. Grouting is better than radial supplementary grouting combined reinforcement. The surface settlement curve of the four-line parallel short clear-distance tunnel under the Grade VI surrounding rock is in the form of a single peak, as the maximum value shows near the center of No. 2 and No. 3 caves. The numerical simulation is consistent with the field measurement law, which shows that the finite element simulation calculation method is significant in predicting the influence of short clear distance tunnels on the ground settlement during construction
Study on the response mechanism of tunnel blasting dynamics and the spatial variation characteristics of the surrounding rock
Authors: Hu Qi-zhi , Zhang Rui , Gao Yong , Hong Chang-wei 
Published: July 2020

Abstract
The construction of the new Orfa drill explosion is the main method of tunneling in mountainous areas at present, and the vibration waves produced by blasting have a great influence on the deformation and stability of the surrounding rock. Based on the tunnel project at the Dalong Expressway in Guizhou, China, the vibration and deformation parameters of the surrounding rock in the blasting construction process are monitored, and the dynamic response mechanisms are studied. Simulations are carried out using the FLAC3D software, and actual measurements of the deformation of the surrounding rock are compared with the results from the numerical simulations. The results show that the blasting parameter is the key influencing factor that determines the blasting power effect. The maximum displacement of the surrounding rock under blasting action occurs in the vault. The displacement area can be divided into five affected regions that show obviously different displacement degrees, where more deformation occurs for surrounding rock that is located closer to the explosion source. Of the three investigated waveforms, all show decreased displacement with distance. However, the exponential load waveform can more effectively represent the spatial variability characteristics of the surrounding rock than the other two load waveforms, where the simulated deformations obtained with this waveform are similar to those of the actual working conditions.
Analysis on the Causes of Cracks in Curved Box Girder Bridges with Small Radius
Authors: Zhao Shuqing , Li Guofeng 
Published: July 2020

Abstract
At present, curved box girder bridges with small radius is widely used in modern highway and urban road interchange flyover, especially in the design of ramp bridge of interchange flyover. Taking the ramp of Liaoyang Road to Haier Road Flyover in Laoshan District of Qingdao as an example, this paper calculates and compares the first principal stress at different positions of typical cross-sections by elementary beam theory and numerical calculation theory, and analyzes the mechanical reasons for serious cracks in the bridge.
Research and Analysis of Civil Airport Cement Concrete Pavement Damage Condition Evaluation and Countermeasure
Authors: Su J , Zhou Z , Kong F , Lai Y , Zhang W 
Published: July 2020

Abstract
By investigating the civil airport cement concrete pavement conditions in different regions of China, this paper evaluates the damage condition and develops the main cause of some typical damages of airport pavement. In addition, this paper considers the ranking and previous solutions of some typical damages of airport pavement to provides suggestions to airport operators, organizers, and constructors regarding the timing, methodology, and investment decisions when dealing with airport runway damage.
Residual Anti-Explosion Performance of The Corrugated Blast Wall For Offshore Platforms after Explosion
Authors: Luo F , Yang D Q , Zhang S L 
Published: July 2020

Abstract
The study of multiple explosion resistance in offshore platform is important in the rescues of life and equipment. To evaluate residual anti-explosion performance of blast wall, numerical investigations are conducted suffering twice sequential blasts. Then comparison with analytical results under the single blast with the same impulse load is implemented. Results show that different from the single blast, the blast wall is bent as a fold after the second blast. There are three kinds of plastic hinge after the second blast due to the latent plastic hinge caused by the first blast. The prediction of residual ultimate resistance shows that additional plastic hinges strengthen the anti-explosion capability. The second blast evaluation is instructive to reinforce the structure and to set the passive plastic hinges
Research on Construction Technology of cast-in-situ bored pile under Complex Geological Conditions
Authors: Wu Y H , Zhou Z , Chen W Q , Liu S Y , Zhang B C , Huang H F 
Published: July 2020

Abstract
Under complex geological conditions, the use of rotary drilling rigs to excavate pile foundations to form holes, unfavorable factors such as silt and groundwater will bring problems such as deviated holes and collapsed holes. Research on construction technology is required to overcome these difficulties. In this paper, the technology of rotary excavation and hole formation in a thick seam and high groundwater area of a seashore is studied. The influence of mud parameters and drilling speed on the quality of hole formation is explored. An efficient drilling rate and an economical and reasonable mud parameters are obtained.
Application Research of BIM Technology in Bridge Reconstruction and Extension Engineering
Authors: Zhang Kechao , Jiang Kai , Yang Yong 
Published: July 2020

Abstract
Regarding the characteristics, engineering needs and technical difficulties of the Chuhe Bridge of the Hening Expressway Project, relying on the four-to-eight expansion project of the Hening Expressway, combined with modern information technologies such as BIM, big data, cloud computing, mobile Internet, etc. Virtual simulation and other technologies can solve the technical problems in the construction of expressway expansion projects, and directly serve the expansion project of Hening Expressway.
Risk Analysis and Protection Strategy of Coastal Urban Construction Project under Extreme Typhoon Climate -- A Case Study of Xiamen City
Authors: Deng Jianxun , Fang Sicheng , Lin Xu , Cai Peng 
Published: July 2020

Abstract
Typhoon is a tropical cyclone with a sustained wind speed ranging from 12 to 13. It is a kind of weather with serious damage. It is of great significance to study the characteristics and causes of disasters caused by super typhoon for disaster prevention and mitigation. Xiamen is located in the southeast coastal area of China, with dense population and developed economy, which is affected by typhoon all the year round. In 2016, the super typhoon “moranti” caused serious damage to the social economy and people’s safety in Xiamen. Based on the theory of natural disasters, this paper studies the causes of “moranti” disasters, mainly analyzes the situation, precipitation, wind power, social conditions, architectural design, social prevention and education from the perspective of the risk of the disaster factors and the vulnerability of the disaster bearing body, and finds that there are still many problems in building typhoon prevention in Xiamen. In order to reduce the loss of buildings in Xiamen area under the extreme typhoon environment as much as possible, the corresponding and feasible protective measures and improvement schemes are put forward.
Influencing factors of urban architectural style in China: A case study of Danzhou City, Hainan Province
Authors: Zhao Jine 
Published: July 2020

Abstract
The architectural style of each city is the result of a variety of factors. In the long run, the architectural style of a region is generally affected by natural factors, human factors and architectural technology factors. Namely: the impact of local special natural geographical conditions on the architectural design style; the requirements of local long history and culture and people’s living habits on the architectural design style; the promotion of architectural technology complying with the requirements of the times on the architectural design style. In this paper, Danzhou City carried out a systematic research and perfect style recognition. Based on the analysis of the identifiability, dominance, effectiveness and integrity of the investigated objects, the influencing factors of Danzhou architectural style are summarized. It also shows the remarkable characteristics of Danzhou City in urban space and architectural language.
Exploration and Practice of “Diversified and Interactive” Internship Assessment System for Accounting Majors Based on Mobile Intelligent Technology
Authors: FengYan Wang 
Published: July 2020

Abstract
This paper analyzes the practical dilemmas of the internship assessment system in universities, including unclear internship assessment goals, lack of transparency in the internship assessment process, lack of process records in internship assessment, inefficient and cumbersome collation of internship assessment data, etc. “Interactive and interactive” internship evaluation system can effectively solve these problems. The practice of accounting major has the characteristics of regional decentralization and strong skills. With the help of mobile intelligence technology, the diversity of internship assessment contents, the rationality of internship assessment standards and the diversity of assessment methods can be realized, and the purpose of practical knowledge construction can be achieved in thinking, cooperation, learning and exchange.
Analysis on the current situation and key problems of artificial island development in China
Authors: Zheng J , Pan C H , Yao W W , Mu J B , Zhao X 
Published: July 2020

Abstract
The artificial island is an important way to develop and utilize the resources of sea areas, islands, and mudflats. The land formed by it has increased artificial shoreline. It is the way of reclamation with advanced concepts in the world and has been paid more and more attention. Based on the investigation and analysis of the current situation of artificial island development in China, the key problems of artificial island development were analyzed. The exploitation of artificial islands can be divided into 4 categories: industrial production land, transportation place, tourism and entertainment place, and urban construction land of comprehensive utilization. The key issues in the development of artificial islands include the fundamental data, site selection, plane shape, foundation treatment, seawall design, ecological environmental impact, full consideration of extreme events and abundant funds. Site selection is the core of the key problems of artificial island development, which is mainly restricted by functional requirements and also influenced by natural conditions.
Research on optimization of traffic management and control measures for expressway emergency based on VISSIM simulation
Authors: Jiahui Li , Keman Wu , Yudian Li , Siyuan Hao , Yuhan Wan , Nale Zhao , Chengwu Jiao 
Published: July 2020

Abstract
With the continuous enhancement of China’s economic strength, the scale and quantity of expressway construction are constantly improving, and the expressway network has basically covered the whole country. With the rapid increase of the number of vehicles, the traffic pressure is also increasing, which poses a more serious challenge to keep the expressway unblocked. First, the increasing traffic pressure is very likely to lead to the occurrence of various emergencies. Second, the completely closed expressway and non-central city promote the emergence of an independent environment, which makes the expressway once an emergency, will have a very negative impact on the effective use of the expressway. Third, every single accident on the expressway will lead to serious traffic jam. At the same time, if the emergency rescue on the expressway is not properly implemented, it will not only bring all kinds of negative obstacles to people’s lives, but also seriously affect people’s property safety and social order stability. Therefore, the construction and improvement of the expressway emergency and related emergency rescue system has gradually become the focus of people’s attention. Traffic management and control under incident conditions is an important link in the emergency rescue system, so this paper conducts research on traffic management and control measures under emergency conditions. Expressway design phase, normally takes into account the traffic management and control measures, such as the location of the median opening, the location of the emergency rescue centre, and the traffic organization mode. However, in-depth research should be carried out to ensure its rationality. This paper takes as an example of an expressway in our country, based on VISSIM simulation technology, quantitative analysis was carried out on the design phase of the traffic management and control measures, provide the basis for the optimization of traffic management and control measures. The evaluation method proposed in this paper is universal, and other expressways can also use this method to evaluate the effectiveness of traffic management and control measures in the design stage.
Research on the Personnel Shelter Location and Evacuation Route Model Planning under Emergent Events
Authors: Sun Xuan , Chen Yi-zhou , Zhan Zi-na 
Published: July 2020

Abstract
Based on the reaction lag of emergency response, inadequate emergency rescue capacity and unreasonable emergency supply allocation and shelter location, it was of great significance to study the reasonable shelter locations and rapid evacuation route under major emergencies for the purpose of disaster prevention and mitigation. The Voronoi diagram partition method was carried out to determine the optimal layout and rational allocation of settlements based on the influence mode of emergency events and characteristics of personnel transfer and settlement, as well as the transfer distance impedance value was 2000 m. The possible population capacity of the settlement was used as weight of settlement planning selection, and a nonlinear full coverage solution model of settlements with shortest path was established. The solution method of the escape route for rapid personnel transfer under major emergencies was proposed to which according to the personnel settlement layout optimization model. Based on the poison gas diffusion simulation particle model and the risk assessment model of road section disaster of the cellular automaton, the path solving system of multi-source concurrent gas leakage and rapid diffusion of toxic gas under complex wind field conditions and dynamic prediction were also developed to predict disaster changes over time and provide technical support for early planning to avoid disasters and rapid personnel transfer.
Research on Micro-renewal Design Strategy of MengZhui Bay Block in Chengdu Old City
Authors: Mei Wu , Shaoying Zhang 
Published: July 2020

Abstract
With the continuous expansion of the city, the significance of the regional characteristic culture reflected in the traditional streets space has become increasingly prominent for urban space. Therefore, the renovation of traditional residential streets is of great significance in the urban space repair work. This article takes the current challenges of residential streets in the old city as research issues, and through field investigations and case studies, constructs a set of design strategies suitable for the micro-renewal of traditional houses in the old city of Chengdu.
The practical dilemma and reform path of university-enterprise collaborative education for Auditing major in the Big Data Era
Authors: Hua Feng 
Published: July 2020

Abstract
Based on the demand of applied audit talents in the Big Data Era, the paper puts forward the reform path of university-enterprise collaborative education mode for Auditing major through the analysis of the practical dilemma of the mode. By continuously deepening the connotation and extension of university-enterprise cooperation, the government, enterprises and universities can achieve all-round and high-quality cooperation in professional construction, personnel training and other aspects.
Landscape construction of urban wetland park based on ecological aesthetics research
Authors: Shaoying Zhang , Mei Wu 
Published: July 2020

Abstract
According to the relevant theoretical research of landscape ecological aesthetics, landscape construction in urban wetlands will be analyzed. The ecological aesthetic framework constructed on this basis can be used to understand the development status and research significance. By combing the relevant concepts, theories about the major ecological aesthetics will be part of the concern. These will be used to construct a theoretical framework for landscape construction. Proceed from the awakening of ecological aesthetic consciousness to explore the beauty of natural ecological balance and the construction of human ecological beauty. On this basis, it puts forward a harmonious view of ecological aesthetics and looking for various connections between people and landscape elements in ecological aesthetics. These will be used to emphasize the complexities of natural aesthetics and the construction of urban wetland landscape ecological aesthetics.
Collision Risk Analysis of Design for Traffic Signal Phasing-Sequence at Signalized Intersection
Authors: Ma Guosheng , Zhao Hantao , Chen Qi , Leng Junqiang 
Published: July 2020

Abstract
To improve the traffic safety at the two-phase intersection, collision risk value between the left-turn vehicle and the straight vehicle in the opposite direction could be used to judge their order. Based on the safety and risk, this method analyzed the process of conflict, modified the operating parameters and then collision risk analysis model was proposed. In the paper, one practical example was given. The result shows that the method can be applied to design the signal phasing-sequence of traffic at signalized intersection, which not only improve safety theory but also provide the theoretical basis for security information service.