2021年是我国的“双碳”元年，2060年实现碳中和的目标任重而道不远。人类社会的各种活动离不开建筑，随着技术进步和生产、生活水平的不断提高，建筑耗能占比愈来愈大，建筑能效提升刻不容缓。从2019年起，某市被列入冬季清洁取暖试点城市，使用每年3亿元的中央专项资金开展为期三年的“蓝天保卫战”治理工程，分三年六期对既有城镇、城乡结合部建筑及农宅进行能效提升及清洁暖源改造。该项目点多面广，周期长且批次多，急需一套科学、合理的管理体系。

BIM（Building Information Modeling，建筑信息模型）和GIS（Geographic Information System，地理信息系统）的集成是分布式建设项目管理的重要手段。首先，本文在整理国内外BIM和GIS在项目管理过程中应用研究现状的基础上，分析梳理了BIM+GIS项目管理平台的理论研究背景及工程实践意义，并结合某市能效提升及清洁取暖类项目的特点和难点，挖掘在项目管理过程中BIM和GIS的应用点，基于BIM+GIS集成，将专业分析模型和智慧项目管理理念结合，分析实际项目管理需求，在明确信息化、智慧化项目管理的数据信息类型、内容和功能需求的基础上，筛选项目需用的建模及分析软件，实现BIM+GIS的信息集成并搭建了能效提升项目管理平台框架，阐述了基于BIM+GIS的建设工程项目协同管理的实施方式，为项目管理提供数字化、智慧化的理论支持和实践方法；其次，本文以某市能效提升项目为背景，对该项目展开实地调研并建立BIM模型，将其轻量化处理导入GIS地形图实现两者集成，便于项目定位及整体管控，建立分析模型并对项目进行热工、采光等模拟分析，通过漫游仿真模拟进行项目可视化漫游和室内外布局预览，从模型信息协同、高效信息分析和可视化多层面辅助提升项目管理的效率及效益；最后，结合所建立模型，在项目多个阶段中通过BIM+GIS项目管理平台及其管理理念，为项目各参与主体运用BIM+GIS项目管理平台进行项目信息数据协同、共享与传递，提供了管理流程、方法以及注意事项，使得整个项目过程实现申报立项高效化、方案设计精细化和可视化、项目信息模型化、项目管理智慧化，并搭建OA功能架构，在运维阶段，使用专业仪器对进入运维阶段的项目进行监测，统计资源节约量并进行能效评估和民意调研，将调研结果录入BIM+GIS信息模型中，匹配至对应项目及其改造建设方案、成本资金、区位地形等，实现项目监测的直观可视化、信息协同化管理，后续可在BIM+GIS模型中分析各项目财政支出与实际成效，指导下期项目的选点和方案选取，形成运维指导投资，投资反哺运维的闭环，持续优化后续项目质量。

通过本文的研究，对BIM+GIS在工程项目全生命周期管理中的应用做出了有益的探索，提供了项目管理向信息化、智慧化和精细化发展的思路和案例，填补了能效提升类工程项目管理层面的部分空缺。为后续基于BIM+GIS的能效提升项目管理平台的开发创建提供基本框架、项目信息数据和案例支撑，同时也助力平台在建设工程项目管理中的落地与推广。

2021 is the first year of China’ s “dual carbon” goal and it’ s a big task to achieve the goal of carbon neutrality in 2060. Various activities of human society are inseparable from buildings. With technological progress and the continuous improvement of production and living standards, the proportion of building energy consumption is increasing, and the improvement of building energy efficiency is urgent. Starting in 2019, a city has been included in a pilot city for clean heating in winter, using 300 million yuan per year of central government funding to carry out a three-year action plan to fight air pollution to upgrade energy efficiency and clean heating sources in existing towns, buildings in urban-rural areas and farmhouses in six phases over three years. The project is extensive, with long lead times and many batches, and a scientific and rational management system is urgently needed.

The integration of BIM (Building Information Modeling) and GIS (Geographic Information System) is an important means of distributed construction project management. Firstly, this paper summarizes the application research status of BIM and GIS in project management process at home and abroad, analyzes the theoretical research background and engineering practice significance of BIM+GIS project management platform, and explores the application points of BIM and GIS in project management process based on the characteristics and difficulties of energy efficiency improvement and clean heating projects in a city. Based on BIM+GIS integration, the professional analysis model and smart project management concept are combined to analyze the actual project management needs. On the basis of defining the data information types, contents and functional requirements of informationized and intelligent project management, this paper selects the modeling and analysis software needed for the project, realizes the information integration of BIM+GIS, sets up the framework of energy efficiency improvement project management platform, and expounds the implementation mode of BIM+GIS-based collaborative management of construction engineering projects, which provides digital and intelligent theoretical support and practical methods for project management. Secondly, this paper takes the energy efficiency improvement project of a city as the background, carries out field research on the project and establishes BIM model, and imports its lightweight processing into GIS topographic map to realize the integration of the two, which is convenient for project positioning and overall control. This study establishes an analysis model, and conducts simulation analysis on thermal engineering and lighting of the project. Through roaming simulation, this study carries out visual roaming of the project and preview of indoor and outdoor layout, which improves the efficiency and benefit of project management from multiple aspects including model information coordination, efficient analysis and visualization. Finally, in combination with the established model, the BIM+GIS project management platform and its management concept are used in multiple stages of the project to realize the collaboration, sharing and transmission of project information and data for each participant of the project, and provide management processes, methods and matters for attention, which makes the whole project process to achieve high efficiency of project declaration and approval, fine and visual scheme design, project information modeling, and project management wisdom. In addition, by building OA functions, this paper uses professional instruments to monitor the O&M phase, count resource savings, conduct energy efficiency assessment and public opinion research, and enter the research results into the BIM+GIS information model and match them to the corresponding projects and their renovation and construction plans, cost funds and district topography, realizing intuitive visualization and collaborative information management for project monitoring. The BIM+GIS model can then be used to analyze the financial expenditure and actual effectiveness of each project and guide the selection of sites and solutions for the next phase of the project, forming a closed loop in which O&M guides investment and investment feeds O&M, continuously optimizing the quality of subsequent projects.

Through the research of this paper, the application of BIM + GIS in the whole life cycle management of engineering projects has made a useful exploration, which provides ideas and cases for the development of project management to informatization, intelligence and refinement, and fills some gaps in the management level of energy efficiency improvement projects. It provides the basic framework, project information data and case support for the development and creation of the energy efficiency improvement project management platform based on BIM+GIS, and also helps the landing and promotion of the platform in the construction project management.