bluuebunny/crossref_metadata_2025_split huggingface dataset:
Numerical simulation of double deck pavement for long-span cable-stayed bridge
Authors: Guo Kun , Liang Junwei , Han Xin , Pu Guangning 
Published: September 2020

Abstract
The double-deck pavement of the long-span cable-stayed bridge was set as the research object, by setting the load position, load condition and reference point on the bridge deck, the parametric analysis of the elastic modulus, thickness and temperature of the pavement material was performed. Then Pavement structure parameters suitable for the bridge were get. The finite element software was used to simulate the pavement effect of the No. 1 bridge of Haidong Avenue under the actual load, which provided reasonable optimization measures for the construction method of large-span steel bridge deck pavement in high and cold areas.
System Design and Characteristic Analysis of Follow-up Hydraulic Muffler Based on Gear-Screw Transmission
Authors: Chang-ji Shan , Jun Yuan , Hang Jiang , Yi-duo Bian , Yan Cai , De-lan Wu , Yin Zhao , Xing-wei Pan 
Published: September 2020

Abstract
In order to improve the attenuation frequency range of traditional static two-stage H-type hydraulic muffler, a two-stage follow-up hydraulic muffler driven by gear-screw is designed based on PLC. The Muffler can change its structure parameters according to the rotational speed of the hydraulic pump, and attenuate the two pulsation frequencies of the hydraulic pump. Considering the structural parameters and gear transmission of the muffler, the static and dynamic characteristics of the muffler are analyzed systematically, and the stability of the muffler is verified by the case simulation test. The results show that the two-stage follow-up hydraulic muffler based on PLC can attenuate the two pressure pulsation frequencies at the same time, and the operation is stable and the response speed is fast. The two-stage follow-up hydraulic muffler has practical significance and value to provides a way for engineering hydraulic system noise reduction.
Humidity Comparative Study of New Maintenance Method in Airport Pavement Concrete of China
Authors: Ma D X , Liu Y , Lai Y , Wang P , Zhang W , Li Bo 
Published: September 2020

Abstract
Through comparing actual projects this paper presents and discusses the effects of curing film and geotextile on humidity of airport pavement concrete during maintaining process. The results show that, compared with the maintenance of geotextile, the curing film can ensure sufficient humidity, and it has very significant uniformity and continuity.
Evaluation of regional sustainable development based on ecological footprint model — take Luzhou city as an example
Authors: Huan Luo , Fang Wang 
Published: September 2020

Abstract
To clearly understand the ecological status and future sustainable development of Luzhou City, based on the ecological footprint model, this paper quantitatively studies the sustainability of Luzhou city’s development in 2006-2016, and forecasts the sustainable status of Luzhou City in 2017-2026 by using the grey system prediction model. The results showed that Luzhou city was in the state of ecological deficit from 2006 to 2016, but showed a decreasing trend year by year. Luzhou city’s ecological economy is in a weak and unsustainable state, and the structure and function of the ecological economic system are being optimized and adjusted. Therefore, to realize the sustainable development of Luzhou ecological economy, it is necessary to adjust the industrial structure, reduce energy consumption and promote the sustainable development of the region.
Ecological security of economic belt from the symbiosis perspective--a case study of the Yangtze river economic belt
Authors: Wu Yanxia , Wang Yajuan , Wang Yanlong 
Published: September 2020

Abstract
As an advanced stage of the urbanization process and the main force driving the high-quality development of China’s economy, the economic belt has caused the emergence of ecological security problems in the economic belt while its economic growth. In this paper, the Yangtze River Economic Belt, a national strategic layout area, is used as an empirical research. Based on the symbiosis theory, the Lotka-Volterra model for ecological security measurement of symbiotic development is constructed, and according to the actual conditions of 11 provinces and cities in the Yangtze River Economic belt, comprehensive evaluation of the ecological security of its are conducted. The research results show that: (1) From 2008 to 2017, the overall ecological carrying capacity of the Yangtze River Economic Belt was low, and the regional ecological conditions have improved but not obvious; (2) Through the reverse decoupling of indicators, it was found that the resources along the Yangtze River were over-exploitation, the serious pollution of industries and agriculture, and the base of pollutant emissions is large; (3) To improve the resources and ecological environment of the Yangtze River Economic Belt, it is necessary to strengthen source prevention, comprehensively promote pollution remediation, repair damaged ecology, and promote green sustainability development.
Responses of NDVI to climate factors in Inner Mongolia using geographically weighted regression
Authors: Wang Yuwei , Gao Wang 
Published: September 2020

Abstract
Using the MODIS normalized difference vegetation index (NDVI) datasets along with the climate data (precipitation and temperature), geographically weighted regression (GWR) was constructed to explore the spatial nonstationarity and heterogeneity relationships between NDVI and climate factors in Inner Mongolia, China. Our work compared the results of GWR model accuracy with ordinary least squares (OLS) model. The results indicated that GWR method yielded better goodness of fit and higher model accuracy than OLS. Moreover, the GWR model could deeply reveal the complex relationship between NDVI and climate factors. At the same time, the research results could also provide scientific basis for vegetation modeling in Inner Mongolia and similar areas.
Research on 4D Simulation Technology of Reconstruction Engineering Construction Organization Based on BIM
Authors: Wang Chen , Liu Xiangsheng , Zhang Kechao 
Published: September 2020

Abstract
This research is based on BIM technology to achieve 4D simulation of highway construction organization. By correlating BIM model and construction process, it can identify potential process errors or conflicts in advance, optimize construction organization process, and reduce unnecessary capital investment. Relying on the research results, the collaborative management of the quality, schedule and cost of complex projects in the construction process is realized.
Research on the Framework of the Collaborative Management Platform for the Reconstruction of Bridge Projects during Construction Based on BIM
Authors: Jiang Kai , Yang Yong , Zhang Kechao 
Published: September 2020

Abstract
This research is based on BIM technology, cloud computing and Internet of Things technology, and independently developed the BIM collaborative management platform framework during the bridge reconstruction project construction period, to achieve visual and refined management of the quality, safety and progress of the bridge reconstruction based on BIM technology. The research results can be found in Popularize and apply on the same type of bridge.
Brief introduction of dehumidification technology and research progress
Authors: Wang Jie , Peng Fusheng , Tu Zhiyuan , Wei Zijie , Zhang Di , Guo Jiaquan , Huang Chunjie 
Published: September 2020

Abstract
Air humidity is one of the important factors that constitute the human body’s thermal comfort. Inappropriate humidity will affect people’s comfort and health. With the improvement of people’s living standard, people have higher and higher requirements for indoor air quality, and air humidity is important factors that affect air quality. Thus it is an important task to control appropriate air humidity in air-conditioning engineering. This paper will briefly discuss and analyze the existing dehumidification technologies of air conditioning, compare the advantages and disadvantages of various dehumidification technologies, and look into the future research direction.
Study on key micromechanics of recycled concrete based on compound random aggregate model
Authors: Zeliang Yao , Shuo Wen , Dongxu Duan , Faning Dang 
Published: September 2020

Abstract
A compound random aggregate program of recycled concrete is developed based on the concrete damage plasticity constitutive mode using computer language. Bifacial mesoscopic models of the recycled concrete are studied with ABAQUS finite element analysis software. The mesoscopic performance of the recycled concrete are studied as follows: uniaxial compression strength, strain change, damage process, stress state, and so on. The influence factors of the mesoscopic mechanical properties of recycled concrete are analyzed. The analysis results show that there are concentration problems of tensile and shear stress in the internal and external interface area of the recycled concrete under the action of uniaxial compression load. The concentration of the tensile stress and shear stress may result in the damage failure of recycled concrete. The initial damage appears the first in weaker interfacial area, after that the damage is developed towards the mortar area. The recycled concrete compressive strength is greatly influenced by the new hardened mortar strength and old hardened mortar strength, and the influence of the interfacial area and the outer surface area is small. The mechanical properties of the recycled concrete are weakened due to the old hardened mortar.
Research on the Design of Comprehensive Storm Flood Prevention and Treatment Project of Sponge Airport
Authors: Ziyin Qu , Jie Ouyang , Xingang Han 
Published: September 2020

Abstract
In view of the current situation that the airport is often flooded in recent years, based on the analysis of comprehensive storm flood prevention and treatment measures in different regions, this paper puts forward the overall framework scheme for the spatial layout design of comprehensive storm flood prevention and treatment project of sponge airport, and focuses on the composition of purification function, workflow process and large-scale release function of new storage tank, so as to promote the new-type “assembled” and “modular” regulation innovative application of storage tank.
Deepening of Integrated pipeline - based BIM
Authors: Han Zhongjun , Chen Peng 
Published: September 2020

Abstract
The traditional electromechanical design using two-dimensional drawings conveys information that is relatively abstract, which means simple profiles and elevation drawings can’t reflect the three-dimensional effect of the pipeline. And that will cause some problems such as collisions during the construction process, disordered pipeline layout, and unreasonable space utilization. As a three-dimensional design technology, BIM can solve the above problems well. This paper describes the deepening and construction methods of pipe comprehensive based on BIM technology in detail. On the basis of refined modeling, combined with on-site construction experience and the comprehensive layout specifications of various professional pipelines, NAVISWORKS is used for collision detection, which is carried out with the designer and the builder, and the optimization of the original design drawings of the project. The deepened model can be used directly to guide on-site construction, that can reflect the important application value of BIM technology in electromechanical engineering.
Influence of the Reservoir Position on Sponge Slope Stability
Authors: Li Liang , Shumei Zhai , Zhihui Wu 
Published: September 2020

Abstract
Sponge slopes have received increasing attention due to their unique ecological advantage. Based on the three-dimensional numerical calculation model, the paper explores the influence of the position of the reservoir on the safety and stability of the slope and compares the variation characteristics of the sliding displacement and stress field of the slope. The results show that when the reservoir is built below the slope foot or at the slope top, the disturbance is relatively small, and the maximum displacement of the slope is smaller. Shear stress concentration occurs near the wall of the reservoir, and it increases and then decreases as the height of the reservoir increases. Besides, the maximum principal stress appears near the reservoir wall and the maximum principal stress decreases as the position of the reservoir increases.
New Structure of Impervious Steel Sheet Pile in Foundation Slab
Authors: Zhao Waner , Tu Zhibin , Yao Jianfeng , Liu Xueying 
Published: September 2020

Abstract
In view of the poor seepage control effect, slow construction progress and high investment cost of the existing sluice vertical impervious core structure, a new type of anti-seepage steel sheet pile structure for foundation slab is proposed in this paper.
The new structure is formed by connecting multiple steel sheet piles, the steel sheet pile is in “U” shape, the steel sheet pile body forms horizontal extension edges on both sides, the two extended edges form two reverse hooks at the end, and the clasp forms an inward inclined plane at the connection opening. The steel sheet pile is used as the vertical anti-seepage body, and the structure of the steel sheet pile is optimized. The connection end is connected by the reverse hook. The gap between the connection end faces is small and the anti-seepage performance is good. The structure reduces the seepage head, reduces the saturation line, and improves the stability of sluice foundation and sluice.
Application of Species Cumulative Curve in the Investigation of Swimming Organisms in the Fishway of Cao’e River
Authors: Rong Li , Hui Yin , Fuqing Bai , Tingli Xu , Xinchuang Cheng , Xinsheng Che 
Published: September 2020

Abstract
Using the species cumulative curve (EstimateS) to analyze the monitored swimming biological data in the Cao’e River gate fishway, the results showed that as the number of sampling increased, the number of species gradually increased, and the cumulative curve rose sharply and then became smooth asymptote, indicating that the swimming organisms in the fishway were fully sampled; there were estimated to be 30 species of swimming organisms in the fishway, and 27 species were found in the actual sample survey, and the survey discovery rate reached 90%, and the sampling survey effect was good.
Development and application of Sequencing Batch Airlift Reactor for Domestic Sewage Treatment
Authors: Chen Peng , Qiu Chong , Han Zhongjun 
Published: September 2020

Abstract
Aiming at the demand of decentralized domestic sewage treatment in rural areas, Sequencing Batch Airlift Reactor (SBAR) for domestic sewage treatment was developed and applied for sewage disposal of an office building in shenjiadun village, Deqing, Zhejiang Province. The device doesn’t need to set up sedimentation tank and sludge reflux system. It has a good precipitation effect and only occupies a small area. In the aspect of control, it adopts the self-researched embedded software system. And it integrates GPRS/GSM/SMS/CDMA/Internet communication technology and high-precision electrical parameter measurement technology. The actual operation results show that the device can ensure sufficient contact between sludge and waste water. It can effectively remove BOD5, CODCr, ammonia nitrogen and total nitrogen from domestic sewage. And it has the advantages of low investment, low energy consumption, high automation and simple operation. Therefore, this device has important popularization value in the field of distributed treatment of rural domestic sewage.
Bibliometric analysis of research progress on karst groundwater pollution
Authors: Zhou Yaxing , yang Fan , Wu Xiaohua , Jia Chao , Liu Sen , Gao Yan 
Published: September 2020

Abstract
The hydrological conditions in karst areas are complex. Due to the special karst structure, the surface and aquifers are closely connected through surface karsts, sinkholes, etc., making the karst aquifers vulnerable to pollution. In recent years, human activities and climate change have also exacerbated this phenomenon. Understanding the key knowledge and research status of karst groundwater pollution is an important prerequisite for subsequent research. Based on the CiteSpace software, this paper analyzed the related papers on karst groundwater pollution in the core database of Web of Science, intending to sort out the research results in this field and explore potential research hotspots. Analysis results show that: (1) In recent years, the number of publications and citations in this field has gradually increased, and there is a large space for research and development; (2) The United States, China, Germany are the countries that have contributed the most in this field. The number of research results in this field supported by the National Natural Science Foundation of China is in a leading position in the world; (3) The identification and protection of the vulnerability of karst aquifers, modeling of groundwater flow and pollutant migration are the main research directions. Water chemical analysis, tracer experiment and numerical modeling are the main research methods in this field; (4) The migration of organic micro-pollution, the trace of groundwater flow, the distribution of biodiversity and control factors, the characterization of karst conduits and the simulation of conduit flow, and the development of new tracer isotope fractions are potential development directions and breakthrough points in this field. In general, the research on karst groundwater pollution in the future is inseparable from the cross-integration of various disciplines, the mutual verification of multiple methods, and the introduction of new technological methods.
Experimental Study On Properties Of High-Early-Strength Cementitious Grout
Authors: Huang S M , Zhu W , Yu L L , Zhang S , Lu D H 
Published: September 2020

Abstract
This paper studied the influences of mineral admixture content on the fluidity, compressive strength and vertical expansion rate of the cementitious grout, which based on a ternary composite cementitious material system of sulfoalminate cement, protland cement and gypsum. The influences of fly ash, slag powder and silica fume were investigated respectively. It was shown that: (1) The initial fluidity grew as the addition of fly ash content in the cementitious grout, 1 d compressive strength and 3 d compressive strength were reduced. (2) The slag powder had great impact on the fluidity, when the content of slag powder more than 18%, initial and 30 min fluidities declined. With the slag powder increased, 1 d, 3 d and 28 d compressive strengths decreased slightly, while 3 h vertical expansion rate increased. (3) The increased of silica fume content made the compressive strengths rised first and then fell. 1 d, 3 d and 28 d compressive strengths could reach their maximum values, when the amount of silica fume was 3.0%.
Static elastoplastic analysis of the composite shear wall of the grid -tube- type double steel plate wall with infilled concrete
Authors: Tao Jiang , Jinbao Li , Wenping Xu 
Published: September 2020

Abstract
In this paper, the new idea is proposed on the composite shear wall of the grid -tube- type double steel plate wall with infilled concrete, the model test was carried out, and combined with practical engineering, for instance, a 18th floor high-rise building pushover static elastoplastic analysis is discussed. Research shows that the hysteresis curve of the new composite shear wall is relatively full, and has good seismic performance with high bearing capacity, high ductility and high energy consumption capacity. Under the action of rare earthquakes, the interlayer displacement is small on structural system with concrete filled steel tubular column and he composite shear wall of the grid -tube- type double steel plate wall with infilled concrete, and the new composite shear wall is distributed more base shear. Research shows that structural system on composite shear wall with grid -tube- type double steel plate wall with infilled concrete has good seismic performance.
Research on Application of BIM 5D in Communication of Project Muti-participants—A Case Study of Nagpur Metro Project
Authors: Liu Yang , Liu Ying , Lin Mengguo , Zhang Jianshuo , Yang Chenchen , Huang Guozhong , Zhang Yi , Zhao Qiong 
Published: September 2020

Abstract
At present, our country’s infrastructure projects are in a period of rapid development of investment and construction, and they play a vital role in maintaining social production and social harmony. The concept of Building Information Modeling is used to solve the communication problems of various participants in construction projects. It is increasingly being paid attention to and applied by various departments and majors of the construction industry, as well as domestic and foreign research scholars, especially infrastructure projects with complex structures and numerous stakeholders. For the Nagpur Metro Rail Project, an analysis of the relationship between the various stakeholders involved in this infrastructure project and the benefits and challenges of adopting a digital management platform.
Research on Key Technologies of Construction Management of Large Swivel Bridge Based on BIM Technology——A Case Study of Dade Swivel Bridge
Authors: Li Yongbing , Li Peng , Li Yu , Feng Junchun , Liu Yang , Yan Ziwei , Liu Ying , Gui Yuhuan , Yang Zuxian 
Published: September 2020

Abstract
Swivel bridge is a special construction method in bridge engineering. It has the characteristics of difficult construction, complex environment and many benefits. The project needs fine management to overcome various problems in traditional construction management mode. Taking Kunchu Expressway over Chengdu-Kunming Railway Bridge as an example, this paper introduces the technical route and technical application points of fine management of construction of turning bridge of Expressway based on BIM technology. The main application points of this paper include: BIM collaboration, BIM collision detection, BIM project management application platform, UAV three-dimensional scene modeling, three-dimensional laser scanning. Practice has proved that BIM technology has incomparable advantages over traditional management mode in finding drawings errors, technical submission, engineering statistics, collision detection, information integration and so on. The implementation of BIM technology has brought enormous technical and economic benefits to project management and has good prospects for promotion.
Analysis of Monitoring in Displacement For Vacuum Combined Stack Preloading about Soft foundation Sluice
Authors: Jin Hai-sheng , Ma Rui-qun , Xu Xiang-ming , Ge Guo-chang 
Published: September 2020

Abstract
Soft soil foundation treatment methods mainly include soil replacement cushion method, dynamic compaction method, drainage consolidation method, etc. Drainage consolidation methods mainly include: vacuum preloading method, stack preloading method and vacuum combined stacking preloading method. Among them, the vacuum preloading method has obvious advantages in treating large areas and deep soft foundations. This paper describes the process of soft soil foundation vacuum combined with stack preloading reinforcement. Through the monitoring of the vacuum preloading process, we mainly analyzed the monitoring results and development trend of horizontal displacement.