Abstract:Real 3D provides more accurate,intuitive and comprehensive information for land spatial planning by obtaining real-world 3D data.This paper introduces the concept of real 3D and data acquisition technology,and develops a real 3D intelligent visual analysis system for land spatial planning based on real 3D design.At the same time,it is applied to the safety bottom line analysis,urban public service facilities analysis,urban landscape viewing gallery control analysis,planning scheme comparison,and other aspects in Guangxi land spatial planning,which effectively improves the land spatial planning and governance level of Guangxi Autonomous Region.

Abstract:By building a unified three-dimensional urban spatial governance platform based on real life,this paper adopts the dual-engine architecture of"GIS engine + illusion engine"to solve the problem of insufficient GIS data management and analysis ability,and at the same time,enhances the expressive force of fine scenes.LOD multi-level 3D model loading method is adopted to reduce the amount of entity data to be processed in rendering cycle and improve the loading efficiency of 3D model.The skew model is loaded by dynamic video stream technology to fully ensure the security of geographic information data.Taking Panyu District construction project,as an example,it has been effectively applied in urban comprehensive improvement,three-dimensional auxiliary examination and approval and urban quality improvement,which provides reference for urban space comprehensive management construction.

Abstract:This paper studies the application of brain-computer interface chip technology in smart medical care,explores the research status and specific application modes of brain-computer interface chip at home and abroad,analyzes its specific uses in the field of smart medical care,and puts forward countermeasures and suggestions for the technical bottlenecks and potential risks of brain-computer interface chip at present.

Abstract:Relying on mobile Internet,WebGIS,and other information technologies,this paper designs a mobile information collection App and a browser project management system,which realizes the informationization of field data collection,project management,and drilling management,standardizes the data format and improves the work efficiency.

Abstract:Unmanned aerial vehicle tilt photogrammetry has the characteristics of high efficiency and low cost in the application of 3D modeling of large scenes,but this method is prone to holes,flowers and other problems when displaying single models.This paper analyzes the factors that affect the accuracy of three-dimensional model,and adopts multi-scale tilt photogrammetry method to carry out realistic fine modeling and visual display of single building.

Abstract:In the process of urban drainage network census,topological analysis of the generated geographic database vector data is related to the integrity and rationality of the final drainage network information.In the whole urban drainage pipe network system,all outlets are distributed in specific places such as rivers and sewage treatment plants,but errors in node coordinate entry and topology in the drainage pipe network will generate"wrong outlets"in the drainage official website database.This paper expands the function of geometric network analysis in ArcPy,the third party database of ArcGIS,to quickly find and generate the"wrong outlet"in the database of urban drainage pipe network.

Abstract:Based on GIS and Internet of Things technology,the paper designs a safety monitoring and early warning system for drainage manhole cover,which can realize intelligent management of manhole cover,effectively supervise the state of manhole cover,give real-time alarm to abnormal manhole cover,reduce manual inspection workload,ensure pedestrian safety,realize full digitalization of project management,field collection,and internal database building,improve the implementation level and efficiency of manhole cover census project as a whole,and have certain reference significance for similar information collection in smart cities.

Abstract:This paper introduces digital technology into multi-process and multi-process project management,builds BIM system and management mode for the whole life cycle of large-scale group buildings based on the integration mechanism of data analysis and whole process construction of BIM platform,and explores a feasible technical route for the whole life cycle management mode of large-scale group buildings.

Abstract:As a comprehensive digital tool,Building Information Model(BIM)technology provides a brand-new solution for the design,construction and operation of rail transit projects.This paper mainly expounds the application status of BIM technology in the whole life cycle of urban(suburban)railway engineering projects.It optimizes the layout of track system in the planning stage,realizes the collaborative design of structure and equipment in the design stage,and realizes the resource management and maintenance plan optimization in the construction and operation stage by using BIM.It realizes accurate data collection,optimized design,real-time supervision,risk reduction,and high-quality completion model handover,and provides comprehensive support for the whole life cycle management of urban(suburban)railway engineering projects.

Abstract:Intelligent buildings integrate modern science,building technology,automation technology,big data technology,etc.,and can provide a safer and more convenient living and working environment according to the actual needs of users.Intelligent building technology is the use of intelligent automation systems and information technology to enable efficient,intelligent,and digital management and operation of buildings.The article introduces intelligent buildings,and explores common intelligent building technologies,in order to provide some references and inspiration for related research.

Abstract:By comparing single beam model and beam lattice model,the difference of calculation results between the two models is analyzed by comparing the calculation of box girders with different spans,the influence of different width-span ratio on the amplification factor of live load effect is analyzed by calculating 5-lane load distribution and 2-lane load distribution,the influence of two transverse load distribution modes on the amplification factor of live load effect is analyzed.The results show that the amplification factor of live load effect of box girder is related to its width-span ratio,and the larger the width-span ratio,the larger the corresponding amplification factor of live load effect.When the width-span ratio of bridge is large,the amplification factor of live load effect may exceed 1.15.The traditional simplified calculation method is inaccurate and the load effect of two lanes may be larger than that of five lanes.

Abstract:Based on the mode of"platform + service + elderly + terminal",the paper builds a"1 + N+4"comprehensive service platform for the aged,that is,it takes one platform base and N subsystems as core applications and serves four types of users to provide closed-loop management for the government,integrate peripheral businesses and pension resources,provide closed-loop management of the whole service process for service organizations and service personnel,provide online and offline"quarter-hour life service circle"for individuals and families,realize the connection of the elderly,children,institutions and services,and form a close and linked service ecosystem.

Abstract:This paper introduces the harm of soft soil and expansive soil layer in slope foundation pit,and unloads the slope of foundation pit by measuring and monitoring in the construction process to eliminate potential safety hazards.Through the practice of foundation pit construction in Chengdu Metro Line 18 project,it is proved that adopting reasonable excavation scheme and countermeasures in soft soil and expansive soil stratum can reduce the harm of foundation pit slope and ensure the safety of foundation pit,which has certain practical guidance.

Abstract:Taking 2#inclined shaft of Yushe Tunnel of Taijiao High-speed Railway as an example,this paper adopts transverse shed tunnel method and combines the characteristics of large-section tunnel,introduces the construction method and key points of transverse shed tunnel method for safely entering the main tunnel from inclined shaft,avoids the disturbance of surrounding rock caused by repeated excavation,ensures the construction safety,and quickly completes the roof lifting construction of inclined shaft entering the main tunnel,providing reference for similar tunnel construction in the future.

Abstract:To meet the basic requirements of water quality monitoring,this paper proposes a remote water quality monitoring system based on Narrowband Internet of Things(NB-IoT).The research focuses on the implementation method for remotely monitoring water quality safety.Researchers need to master the functions of modules such as DS18B20 temperature recognition,turbidity sensors,TCS230 color recognition,etc.By comparing and studying the monitored data,different levels of water pollution can be determined,and effective measures can be taken for ecological protection of the water body.This method enhances the efficiency of information collection,improving the real-time and accuracy aspects of the remote water quality monitoring system.

Abstract:BIM technology needs to be synchronized with project construction,build a dynamic twin relationship between information model and entity engineering,realize the effective combination of virtual and reality,guide engineering construction with information model,and make fine engineering construction possible.This paper elaborates on the current application status of BIM technology in China,analyzes the significance of applying BIM technology in construction engineering,and proposes measures for seamlessly connecting construction engineering with BIM technology.

Abstract:In this paper,Anylogic simulation software combined with social force mathematical model is used to simulate the emergency evacuation process after the occurrence of an emergency at the airport.Based on the psychological and behavioral analysis of the initiator of the event in the real case,the simulation logic is innovated.In terms of determining the target condition,the startAttackCheck condition function is built to detect the number of target people within a certain radius of the event initiator.In terms of the selection of target objects,the FindTarget function is constructed to describe the scenario in which the event initiator adopts the principle of proximity to carry out dangerous behaviors.Through the data setting model simulation parameters of the field investigation,the results show that there are defects in the evacuation exit setting,security personnel allocation and safety inspection process of the airport,which has warning significance for the improvement of the safety prevention capability of China's airports.

Abstract:This article classifies stations based on their spatiotemporal distribution characteristics and proposes a hierarchical linkage operation organization plan for stations.the number of passengers in each area,such as the area of the station,the ticket machine,and the waiting area,is qualified.A station control area is set up,which is divided into a security check area,a ticketing service area,and a waiting area.The classification standards and auxiliary judgment methods of Class Ⅰ,Ⅱ,Ⅲ passenger transport organizations are proposed,and the graded flow restriction measures and control measures are proposed.In the process of practical application,the above-mentioned research methods are used to formulate the hierarchical linkage passenger transport organization plan of the station,so that the station can quickly arrange personnel and measures,flexibly respond to the sudden large passenger flow,and realize the safe and orderly operation of urban rail transit stations.

Abstract:In this paper,the elevation point data of the 1∶2 000 scale topographic map is used as the elevation reference truth,and the elevation accuracy of the ASTER GDEM model is analyzed by taking the typical high-altitude mountainous areas and low-altitude plains in China as the study area.The error of the ASTER GDEM model is normally distributed as a whole,and the model elevation value is strongly correlated with the reference elevation value.The average elevation error of the ASTER GDEM model in high altitude area is-4.1 m,and the root mean square error is 13.7 m,which is basically the same as the nominal accuracy.The average elevation error of the model in low altitude areas is 2.7 m,and the root mean square error is 5.4 m,which is much higher than the nominal accuracy.There is no obvious trend in the average error of the model at different altitudes,and the standard deviation increases with the increase of altitude.The greater the terrain undulation,the greater the model error.

Abstract:In the process of predicting the electricity consumption of urban residents in Huzhou,the historical electricity consumption data shows strong volatility and seasonality,which leads to the unsatisfactory prediction effect of the original model.In this paper,the Markov modified combination model is introduced and improved,and the residual division part of the Markov modified residual division is improved to adaptive residual division.It was used to modify the original models of metabolism GM(1,1),SARIMA,Holt-Winters,LSTM,etc.The combined model modified by DC-Markov,MC-Markov and SC-Markov is used to predict the residential electricity consumption data of Huzhou City in the coming months.The results show that the prediction accuracy of the adaptive residual division Markov modified model proposed in this paper is improved to some extent compared with the original model,and the DC-Markov-Holt-Winters model has higher accuracy in the prediction of urban residential electricity consumption data in Huzhou City.