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基于知识图谱的隧道智能施工系统构建研究

铁道技术标准（中英文） 2024年第8期6卷 23-31页

作者：李佳玉江若飞王荣波尹逊霄卢文龙中国铁道科学研究院集团有限公司电子计算技术研究所北京100081 中国铁道科学研究院集团有限公司bim软件铁路行业重点实验室北京100081

智慧工地管理系统是智能建设的核心,针对隧道工地数据复杂、体量大、结构多变等问题,提出了以施工场景为导向的智慧隧道工地管理系统构建策略和优化路径。系统明确隧道施工场景的标准化业务要素,形成全流程管理场景和施工策略优化服务场... 详细信息

智慧工地管理系统是智能建设的核心,针对隧道工地数据复杂、体量大、结构多变等问题,提出了以施工场景为导向的智慧隧道工地管理系统构建策略和优化路径。系统明确隧道施工场景的标准化业务要素,形成全流程管理场景和施工策略优化服务场景,提高施工效率和质量,降低风险和成本。基于施工场景业务需求,设计智慧工地管理系统的总体架构,依托知识图谱技术进行数据关联关系分析、施工流程分析等,实现对施工各环节的智能化管理。通过该系统及其信息深度挖掘、问题智能处理、流程优化的功能,助力施工现场智能化升级,实现数据资源的有效利用和转化。

关键词：知识图谱隧道施工信息挖掘智慧工地

A survey on indoor 3D modeling and applications via RGB-D devices

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Frontiers of Information Technology & Electronic Engineering 2021年第6期22卷 815-826页

作者： Zhilu YUAN You LI Shengjun TANG Ming LI Renzhong GUO Weixi WANG School of Architecture and Urban Planning Research Institute for Smart CitiesShenzhen University&China Guangdong–Hong Kong–Macao Joint Laboratory for Smart Cities&Key Laboratory of Urban Land Resources Monitoring and SimulationMinistry of Natural ResourcesShenzhen 518060China State Key Laboratory of Information Engineering in Surveying Mapping and Remote Sensing Wuhan UniversityWuhan 430079China

With the fast development of consumer-level RGB-D cameras, real-world indoor three-dimensional(3 D) scene modeling and robotic applications are gaining more attention. However, indoor 3 D scene modeling is still challenging because the structure of interior objects may be complex and the RGB-D data acquired by consumer-level sensors may have poor quality. There is a lot of research in this area. In this survey, we provide an overview of recent advances in indoor scene modeling methods, public indoor datasets and libraries which can facilitate experiments and evaluations, and some typical applications using RGB-D devices including indoor localization and emergency evacuation.

关键词： 3D indoor mapping RGB-D Indoor localization construction monitoring Emergency evacuation

高速铁路钻爆法隧道关键工序要素分析及自动判识技术研究

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铁道技术标准（中英文） 2024年第8期6卷 8-16页

作者：王焜朱宝石解亚龙范文娜张素华吉妙玲张辰瑒中国铁道科学研究院集团有限公司bim软件铁路行业重点实验室北京100081 中国铁道科学研究院集团有限公司电子计算技术研究所北京100081

目前高速铁路钻爆法隧道施工工序用时多以人工记录的方式统计,存在实时性不足、反馈不及时等现象。为提高钻爆法隧道施工关键工序的数字化程度、提高工程进度管理精度,本文采用因素分析法提取高速铁路钻爆法隧道施工关键工序的业务要素... 详细信息

目前高速铁路钻爆法隧道施工工序用时多以人工记录的方式统计,存在实时性不足、反馈不及时等现象。为提高钻爆法隧道施工关键工序的数字化程度、提高工程进度管理精度,本文采用因素分析法提取高速铁路钻爆法隧道施工关键工序的业务要素与数据要素,融合机器视觉技术、UWB定位技术和通信组网技术,创新提出高速铁路钻爆法隧道关键工序自动判识技术,并形成一套自动判识软硬件设备,为高速铁路钻爆法隧道关键工序用时数据自动化采集、关键工序用时分析和工程进度管理提供了必要的技术手段。

关键词：高速铁路钻爆法隧道工序工序用时机器视觉 UWB定位机械状态自动判识

research Progress on the Influence of Varying Fiber Contents on Mechanical Properties of Recycled Concrete

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Structural Durability & Health Monitoring 2023年第3期17卷 239-255页

作者： Zhenqing Shi Guomin Sun Jianyong Pang College of Civil and Architecture Engineering Chuzhou UniversityChuzhouChina Engineering research Center of Underground Mine construction Ministry of Education(Anhui University of Science and Technology)HuainanChina

Applying recycled concrete for engineered projects not only protects the ecological environment but also improves the utilization rate of waste concrete to satisfy sustainable development ***,the mechanical properties of recycled concrete are not as good as those of ordinary *** enhance the former’s performance and increase its popularity and application in engineeringﬁelds,notable advances have been made by using steel,synthetic,plant,and mineralﬁber *** materials are added to recycled concrete to improve its mechanical *** have shown that(1)steelﬁbers have a distinct reinforcing effect and improve the strength,toughness,and elastic modulus of recycled concrete;(2)the addition of syntheticﬁbers can improve the tension,crack resistance,and durability of concrete,but the size effect needs to be further explored and elaborated;(3)plantﬁber concrete is lightweight and environmentally friendly and provides high toughness and good thermal insulation,but theﬁbers corrode in alkaline environments;in addition,plantﬁbers have high water absorption capacity,which leads to wet expansion and dry shrinkage phenomena,which need to be further studied;and(4)the cost of basaltﬁber,a mineralﬁber,is relatively low,and a suitable basalt content can improve the mechanical properties of recycled concrete to a certain extent.

关键词： Recycled concrete fibers mechanical properties overview

Facet effect on the reconstructed Cu-catalyzed electrochemical hydrogenation of 5-hydroxymethylfurfural(HMF) towards 2,5-bis(hydroxymethy)furan (BHMF)

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Journal of Energy Chemistry 2023年第9期84卷 101-111页

作者： Mengxia Li Tianxi Zheng Dongfei Lu Shiwei Dai Xin Chen Xinchen Pan Dibo Dong Rengui Weng Gang Xu Fanan Wang Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering College of Chemistry and Material ScienceFujian Normal UniversityFuzhou 350007FujianChina Fujian Provincial Key Laboratory of Polymer Materials College of Chemistry and Materials ScienceFujian Normal UniversityFuzhou 350007FujianChina Fujian Eco-materials Engineering research Center School of Ecological Environment and Urban ConstructionFujian University of TechnologyFuzhou 350118FujianChina Institute of smart Marine and Engineering Fujian University of TechnologyFuzhou 350118FujianChina

The electrochemical hydrogenation of HMF to BHMF is an elegant alternative to the conventio nal thermocatalytic route for the production of high-value-added chemicals from biomass *** virtue of the wide potential window with promising Faradic efficiency(FE) towards BHMF,Cu-based electrode has been in the center of ***,its structure-activity relationship remains ambiguous and its intrinsic catalytic activity is still *** this work,we develop a two-step oxidation-reduction strategy to reconstruct the surface atom arrangement of the Cu foam(CF).By combination of multiple quasi-situ/in-situ techniques and density functional theory(DFT) calculation,the critical factor that governs the reaction is demonstrated to be facet effect of the metallic Cu crystal:Cu(110) facet accounts for the most favorable surface with enhanced chemisorption with reactants and selective production of BHMF,while Cu(100) facet might trigger the accumulation of the by-product 5,5'-bis(hydroxy methy)hydrofurion(BHH).With the optimized composition of the facets on the reconstructed Cu(OH)_(2)-ER/CF,the performance could be noticeably enhanced with a BHMF FE of 92.3% and HMF conversion of 98.5% at a potential of -0.15 V versus reversible hydrogen electrode(***) in 0.1 M KOH *** work sheds light on the incomplete mechanistic puzzle for Cu-catalyzed electrochemical hydrogenation of HMF to BHMF,and provides a theoretical foundation for further precise design of highly efficient catalytic electrodes.

关键词： Electrochemical hydrogenation Biomass conversion 5-hydroxymethylfurfural Cu electrode Facet effect

A building energy models calibration methodology based on inverse modelling approach

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Building Simulation 2022年第11期15卷 1883-1898页

作者： Vicente Gutiérrez González Carlos Fernández Bandera Installations construction and structuresSchool of ArchitectureUniversity of NavarraCampus UniversitarioPamplona31009NavarraSpain

Nowadays,building energy models(BEMs)are widely used,particularly in the assessment of energy consumption in buildings to address the potential savings that can be *** realisation of a dynamic energy model based on high-fidelity physics(white-box models)requires a tuning process to fit the model to reality,due to many uncertainties *** some research trends try to reduce this performance gap by modulating different types of experimental parameters such as:capacitances or *** EnergyPlus simulation software,in its latest versions,has implemented an object:HybridModel:Zone that calculates the infiltration and internal mass of buildings using an inverse modelling approach that employs only the measured indoor temperature data to invert the heat balance equation for the zone under *** main objective of this paper is to reduce the execution time and uncertainties in the development of quality energy models by generating a new calibration methodology that implements this *** uses,as a starting point,a research created by the authors of this study,which was empirically and comparatively validated against the energy models developed by the participants in Annex *** is also worth highlighting the empirical validation of the HybridModel:Zone object,since it was activated in all scenarios where its execution is possible:periods of seven days or more of free oscillation and periods in which the building is under *** findings are *** data generated with the new methodology,if compared with those produced by the baseline model,improve their resemblance to the real ones by 22.9%.While those of its predecessor did it by 15.6%.For this study,the two dwellings foreseen in Annex 58 of the IEA ECB project have been modelled and their real monitoring data have been used.

关键词： internal thermal mass energy simulation EnergyPlus inverse model Annex 58 infiltration

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基于虚拟变形法的移动质量识别方法研究

振动工程学报 2010年第5期23卷 494-501页

作者：张青霞段忠东 Lukasz Jankowski 哈尔滨工业大学土木工程学院黑龙江哈尔滨150090 smart-Tech centre Instituteof Fundamental Technological ResearchPolish Academy of Sciences

在车-桥耦合系统的移动质量(荷载)识别反问题中,识别移动质量会面临重构系统、优化缓慢的问题;而若直接识别移动荷载常常会遇到病态问题且对噪音敏感。针对这些缺陷,根据虚拟变形法(VDM)的结构快速重分析思想,提出移动动态影响矩阵,实... 详细信息

在车-桥耦合系统的移动质量(荷载)识别反问题中,识别移动质量会面临重构系统、优化缓慢的问题;而若直接识别移动荷载常常会遇到病态问题且对噪音敏感。针对这些缺陷,根据虚拟变形法(VDM)的结构快速重分析思想,提出移动动态影响矩阵,实现利用较少的传感器即可快速而准确地识别移动质量(荷载)。以移动质量为优化变量,避免了识别荷载常遇到的病态问题,对噪音鲁棒性强;且需要传感器信息少。每步优化中,利用移动动态影响矩阵,无需时时重构车-桥耦合系统的时变系统参数矩阵,优化效率高。VDM方法的思想是将实际结构的响应计算转化为初始结构模型在相同外荷载作用下的响应,与在结构模型发生改变的位置施加相关的虚拟变形或虚拟力引起的响应的线性叠加。通过简支梁模型和框架梁模型验证了该方法的可行性和有效性,即使在5%的噪声影响下,利用一个传感器就可以很好地识别多个移动质量。

关键词：结构健康监测移动质量(荷载)识别结构重分析虚拟变形法(VDM) 影响矩阵

基于DEMATEL的建筑废弃物资源化利用影响因素研究

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项目管理技术 2024年第3期22卷 61-66页

作者：赵丽闫丽李海波赵伟潘绍中河北建筑工程学院经济管理学院河北张家口075000 河北省绿色建筑协同创新中心河北张家口075000 张家口市bim工程技术创新中心河北张家口075000

为系统性研究建筑废弃物资源化利用的影响因素及各因素间的影响关系,从政府、企业和公众三个方面识别建筑废弃物资源化利用影响因素并构建DEMATEL模型,利用SPSS软件计算出各影响因素的影响度、被影响度、中心度及原因度。结果表明:市场... 详细信息

为系统性研究建筑废弃物资源化利用的影响因素及各因素间的影响关系,从政府、企业和公众三个方面识别建筑废弃物资源化利用影响因素并构建DEMATEL模型,利用SPSS软件计算出各影响因素的影响度、被影响度、中心度及原因度。结果表明:市场引导、宣传教育、社会认可度、再生产品知识、政策激励的影响度较高,为建筑废弃物资源化利用的主要影响因素;社会认可度、市场引导、宣传教育、环保意识是建筑废弃物资源化利用的核心影响因素;在建筑废弃物资源化利用过程中,政府和公众层面的因素扮演核心角色,企业层面的因素则是关键枢纽。

关键词：建筑废弃物 DEMATEL模型资源化利用

Exploration of Energy-Saving Technologies in Building Electrical System Design

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Journal of Electronic research and Application 2024年第4期8卷 28-33页

作者： Yong Zhang CNNC Seventh research and Design Institute Co. Ltd.Taiyuan 030032Shanxi ProvinceChina

Green energy conservation is the mainstream trend in the current development of the construction *** application of energy-saving technology in building electrical system design can effectively reduce energy consumption,avoid unnecessary energy consumption,and truly achieve energy conservation and environmental *** on this,the article elaborates on the principles of energy-saving design in building electrical systems,and actively explores the application of energy-saving technologies from different perspectives such as optimizing power supply and distribution system design,adopting high-efficiency energy-saving lighting equipment,applying renewable energy,promoting smart home technology,and improving the efficiency of building electrical equipment.

关键词： Building electrical system design Energy-saving technology