Whole-Process Project Cost Management Based on Building Information Modeling (BIM)

The whole-process project cost management based on building information modeling(BIM)is a new management method,aiming to realize the comprehensive optimization and improvement of project cost management through the application of BIM technology.This paper summarizes and analyzes the whole-process project cost management based on BIM,aiming to explore its application and development prospects in the construction industry.Firstly,this paper introduces the role and advantages of BIM technology in engineering cost management,including information integration,data sharing,and collaborative work.Secondly,the paper analyzes the key technologies and methods of the whole-process project cost management based on BIM,including model construction,data management,and cost control.In addition,the paper also discusses the challenges and limitations of the whole-process BIM project cost management,such as the inconsistency of technical standards,personnel training,and consciousness change.Finally,the paper summarizes the advantages and development prospects of the whole-process project cost management based on BIM and puts forward the direction and suggestions for future research.Through the research of this paper,it can provide a reference for construction cost management and promote innovation and development in the construction industry.

Analysis of Thermal Behavior of Materials in the Building Envelope Using Building Information Modeling (BIM)—A Case Study Approach

Building envelope is a fence that controls heat exchange between interior and exterior and plays an essential role in providing thermal comfort conditions of residents. In recent years, due to the necessity of conserving energy and also preventing increased environmental pollution, the importance of sustainable construction has been doubled. Checking the problems of thermal behavior of the building envelope materials, and what influences in the heating and cooling loads exerted and energy consumption of buildings, are the questions that this research seeks to answer. In this regard, building information modelling analysis (BIM) has worthy contribution in the completion process of sustainable design;thus using software Design Builder, it is paid attention to simulation of the thermal behavior of two types of defined materials for the building envelope that was designed as a Research Institute of Renewable Energy of Yazd University. For Type 1 materials, two layers of brick have been selected, and for Type 2 a thermal insulation layer also added it. Results of the analysis showed that the use of materials Type 2 in the cooling load %4.8 and in the thermal load %62.5 reduction can be achieved which means reducing the load on active system and thus reducing the initial cost of building. Also reduction in annual energy consumption by almost %2.4 for cooling and %62.9 for heating buildings have been achieved, which makes saving non-renewable energy consumption, and consequently reducing environmental pollution as well as reducing current costs will be established.

Integrating Universal Design Standards and Building Information Modeling at the Conceptual Design Stage of Buildings

A projection of the Canadian population shows that in 2024 one in five Canadians will be over 65 years old. This shift forces designers to consider the entire lifetime of occupants during the design of new buildings. Universal Design (UD), which is a design that accommodates all people to the greatest extent possible and aging in place design that is deeply rooted in the principles of UD, aim to house people irrespective of their age, ability, and chronic health conditions. Building Information Modeling (BIM) significantly helps advance the development of the Architecture, Engineering, and Construction (AEC) industry in a more collaborative and automated way. Integrating BIM and UD allows designers to incorporate UD standards easily and efficiently at the conceptual design stage of buildings by using the functionalities and capabilities of BIM tools. Therefore, this study presents the development of an automated computer model to facilitate the adoption of UD standards and processes. The novelty highlighted in this model resides in the creation of an automated method that employs a newly created plug-in and databases to assist designers to incorporate UD standards at the conceptual stage in a timely and cost-effective manner. Furthermore, the study introduces the methodology consisting of collecting, categorizing, and storing data from various universal design and accessible design guidelines in the developed databases and developing new plug-ins in BIM tool to link the developed databases in order to automate the process of retrieving necessary information and components to help designers and owners select optimal design alternatives based on their predefined criteria.

Building Information Modeling for Environmental Impact Assessment in Early Design Phases: A Literature Review

The building sector is the largest consumer of energy in industrial countries. Saving energy in new buildings or building renovations can thus lead to significant global environmental impacts. In this endeavor, building information modeling (BIM) and building energy modeling (BEM) are two important tools to make the transition to net-zero energy buildings (NZEB). So far, little attention has been devoted, in the literature, to discuss the connection between BIM, BEM, and Life-cycle assessment (LCA), which is the main topic of this article. A literature review of 157 journal articles and conference proceedings published between 1990 and 2020 is presented. This review outlines knowledge gaps concerning BIM, BEM, and environmental impact assessment. It suggests that defining the process with the right technology (at the right time) would result in a more integrated design process (IDP) and bridge current gaps. The most efficient way to improve process and technology is related to the competences of the architects, engineers and constructors (AEC). The review also indicates that the IDP in the early design phases (EDP) is in need of improvement for architects and engineers, where a better connection between design phases, specific levels of development (LOD) and BIM tools is needed. Competences, process and technology are the three main themes addressed in the review. Their relation to design phases and LOD is discussed. The aim is to propose possible solutions to the current hinders in BIM-to-BEM (BIM2BEM) and BIM-for-LCA (BIM4LCA) integration.

The design and application of BIM+refined management and control platform for the Jingxiong railway bridge

The high-speed railway construction involves multiple professional fields,such as railway design,construction,and supervision.This paper architects the"BIM+"project refined management platform,designs the platform's logical architecture,physical architecture,and solves several key technology difficulties.This"BIM+"platform has been applied on the Jingxiong Bridge Project and achieved all-round,whole-process and multi-management of high-speed railway engineering construction.It significantly improves the level of construction management,and plays a role in promoting the development of high-speed railway construction informatization.

基于BIM技术在绿色建筑设计中的应用研究

随着社会经济以及建筑行业的快速发展,我国建筑工程行业的项目规模、施工技术、建筑形态愈加复杂化,整体建筑设计复杂化也随着工程难度的变化而变化,传统的建筑设计模式已无法应对当前现有的整体建筑设计需求,而采用BIM技术与绿色建筑设计相结合恰好解决了上述难题,为绿色建筑提供了相应的技术支持和保障,同时也为建筑行业的发展提供了良好的环境保障。本文介绍BIM技术含义,探讨BIM技术与绿色建筑一体化设计的应用,以及BIM技术在三个阶段的绿色建筑设计中的应用,以绿色建筑设计为基础,对BIM技术进行分析。

Research on Construction of Bill of Quantities of Prefabricated Buildings Based on BIM

Building Information Model(BIM)Technology can be widely used in various construction fields.The construction quality and project cost of the prefabricated construction industry based on BIM can be effectively controlled.Based on BIM Technology,the integration of bill of quantities can effectively control the cost of prefabricated construction and improve competitiveness in the bidding process.Based on this,the characteristics and advantages of bill of quantities pricing based on BIM were expounded in this paper.Besides,the structure and content construction of bill of quantities were analyzed,followed by an analysis of pricing control strategy based on BIM were analyzed for assembly building quantities for reference.

基于BIM+数值模拟的弧形闸门结构性能分析研究

【目的】溢洪道泄洪是一个复杂的水气交换物理过程,在溢洪道泄洪中弧形闸门发挥着十分重要的作用,泄洪过程中弧形闸门受到水体流激振动导致受力不均匀,造成弧形闸门应力应变计算困难。针对不同开度下水流对表孔弧形闸门结构受力情况,【方法】以某水电站溢洪道弧形闸门为例,采用BIM技术建立弧形闸门和流场计算域模型,通过BIM技术与有限元数值模拟间数据交互建立三维有限元模型,采用Fluent、Static Structural进行网格划分并对不同开度下溢洪道过闸流量和弧形闸门受力情况进行数值模拟,分析溢洪道过闸流量和弧形闸门应力、应变变化规律。【结果】结果显示:过闸流量在误差允许范围之内,闸门应力、应变随开度的不断增加逐渐减小,在闸门开启瞬间产生最大等效应力值为142.2 MPa,最大变形值为3.45 mm;采用BIM技术对弧形闸门进行性能分析,提高数值分析效率,并将数值分析得到的水力信息进行处理赋予BIM结构模型中。【结论】研究表明:BIM技术结合数值模拟技术可以进行水工钢结构性能分析,实现BIM平台与CAE有限元平台数据双向交互,拓宽了BIM技术在水工钢结构性能分析中应用研究。

Looking towards the Future of BIM in South Korea Towards AI-Enhanced BIM

This paper provides an overview of South Korea’s 20-year journey in adopting building information modeling(BIM) and future direction. It first discusses the six phases of BIM adoption in South Korea, starting from the use of BIM as a marketing tool to its current intelligent BIM phase. The government’s support for BIM-related research and development projects is also highlighted, with a focus on the artificail intelligence (AI)-based architectural design automation project. As the future direction, it explores the integration of AI with BIM in both local and global contexts. The paper presents AIpowered architectural design methods, including AI-powered early architectural design generation and architectural detailing.Compared to AI-based early architectural design generation, architectural detailing is an unexplored research topic. This paper introduces two AI-and BIM-based architectural detailing methods, being developed at Yonsei University:namely,BIM library transplant and Natural language-based Architectural Detailing through Interaction with AI (NADIA). These methods demonstrate how AI-enhanced BIM can enable architects to interactively develop building details using a language model as a conversational AI and a knowledge base, and a BIM authoring tool as a design platform, in the near future.

Indoor Space Modeling and Parametric Component Construction Based on 3D Laser Point Cloud Data

In order to enhance modeling efficiency and accuracy,we utilized 3D laser point cloud data for indoor space modeling.Point cloud data was obtained with a 3D laser scanner and optimized with Autodesk Recap and Revit software to extract geometric information about the indoor environment.Furthermore,we proposed a method for constructing indoor elements based on parametric components.The research outcomes of this paper will offer new methods and tools for indoor space modeling and design.The approach of indoor space modeling based on 3D laser point cloud data and parametric component construction can enhance modeling efficiency and accuracy,providing architects,interior designers,and decorators with a better working platform and design reference.

A Building Information Modeling-Life Cycle Cost Analysis Integrated Model to Enhance Decisions Related to the Selection of Construction Methods at the Conceptual Design Stage of Buildings

Life Cycle Cost Analysis (LCCA) provides a systematic approach to assess the total cost associated with owning, operating, and maintaining assets throughout their entire life. BIM empowers architects and designers to perform real-time evaluations to explore various design options. However, when integrated with LCCA, BIM provides a comprehensive economic perspective that helps stakeholders understand the long-term financial implications of design decisions. This study presents a methodology for developing a model that seamlessly integrates BIM and LCCA during the conceptual design stage of buildings. This integration allows for a comprehensive evaluation and analysis of the design process, ensuring that the development aligns with the principles of low carbon emissions by employing modular construction, 3D concrete printing methods, and different building design alternatives. The model considers the initial construction costs in addition to all the long-term operational, maintenance, and salvage values. It combines various tools and data through different modules, including energy analysis, Life Cycle Assessment (LCA), and Life Cycle Cost Analysis (LCCA) to execute a comprehensive assessment of the financial implications of a specific design option throughout the lifecycle of building projects. The development of the said model and its implementation involves the creation of a new plug-in for the BIM tool (i.e., Autodesk Revit) to enhance its functionalities and capabilities in forecasting the life-cycle costs of buildings in addition to generating associated cash flows, creating scenarios, and sensitivity analyses in an automatic manner. This model empowers designers to evaluate and justify their initial investments while designing and selecting potential construction methods for buildings, and enabling stakeholders to make informed decisions by assessing different design alternatives based on long-term financial considerations during the early stages of design.

基于BIM的考虑多源信息的超高层建筑结构智能监测方法

超高层建筑结构复杂,施工周期长,在进行超高层建筑结构监测的过程中,如何准确、及时地完成监测内容是监测的重点和难点.针对以上问题,结合某超高层结构,研究了多源信息融合方法、建筑信息模型(building information modelling,BIM)技术在结构监测方案制定、三维可视化施工模拟指导传感器安装及可视化智能监测系统搭建等方面的具体应用.解决了超高层建筑结构监测过程中,由于施工过程复杂并且传感器种类、数量过多导致的未能及时完成监测内容的问题,搭建基于BIM技术的智能监测平台,可以更直观地读取监测数据,为类似的超高层建筑施工过程监测项目提供参考.

融合BIM+GIS技术的公路水运工程档案信息管理系统开发架构综述

在新档案法即将实施的背景下,为推进交通领域公路水运工程建设项目档案实行单套制电子文件归档管理,江西省交通运输工程档案馆基于JAVA语言、SQL Server数据库,开发出融合BIM+GIS技术的公路水运工程档案信息管理系统架构,旨在实现档案信息文本数据与工程地理信息数据、结构几何数据、材料属性数据、质量过程数据等的可视化映射管理。

Integrating Virtual Reality and Energy Analysis with BIM to Optimize Window-to-Wall Ratio and Building’s Orientation for Age-in-Place Design at the Conceptual Stage

This study unfolds an innovative approach aiming to address the critical role of building design in global energy consumption, focusing on optimizing the Window-to-Wall Ratio (WWR), since buildings account for approximately 30% of total energy consumed worldwide. The greatest contributors to energy expenditure in buildings are internal artificial lighting and heating and cooling systems. The WWR, determined by the proportion of the building’s glazed area to its wall area, is a significant factor influencing energy efficiency and minimizing energy load. This study introduces the development of a semi-automated computer model designed to offer a real-time, interactive simulation environment, fostering improving communication and engagement between designers and owners. The said model serves to optimize both the WWR and building orientation to align with occupants’ needs and expectations, subsequently reducing annual energy consumption and enhancing the overall building energy performance. The integrated model incorporates Building Information Modeling (BIM), Virtual Reality (VR), and Energy Analysis tools deployed at the conceptual design stage, allowing for the amalgamation of owners’ inputs in the design process and facilitating the creation of more realistic and effective design strategies.

基于ADE的IFC到CityGML层次转换模型

新型城市化建设和管理过程中,借助建筑信息模型(building information modeling,BIM)与地理信息系统(geographic information system,GIS)的数据集成,不但能实现建筑物的精细化表达,而且室外信息得以兼顾,实现空间分析及室内外一体化表达。但BIM与GIS两种不同的数据格式无法直接实现数据的互通。为此,首先分析了模型IFC和CityGML在文档形式等方面的差异,并实现了多个简单建筑物IFC模型到CityGML3.0 LOD2、LOD3的转换。其次,针对上述数据集成实验中语义丢失问题,扩展GIS的CityGML3.0数据格式,提出CityGML B-Con扩展模型,完善IFC到CityGML3.0的一对一映射关系。最后,实现多个不同复杂程度建筑物IFC模型到CityGML B-Con扩展模型的转换。实验结果表明,利用CityGML B-Con模型能实现BIM与GIS的数据集成。宏观层面来说,能够增强转换后建筑物外观的细节程度,微观层面而言,BuildingConstructiveElement和BuildingInstallation的子类得以区分,IfcStair、IfcRamp和IfcBeam等建筑构件都能通过一对一映射的方式转换至CityGML中,克服了CityGML原有标准在建筑物构件表达方面的缺陷,有效减少了BIM源数据语义信息的丢失。

Towards Automatic Generation of As-built BIM:3D Building Facade Modeling and Material Recognition from Images

As-built building information model （BIM） is an urgent need of the architecture, engineering, construction and facilities management （AEC/FM） community. However, its creation procedure is still labor-intensive and far from maturity. Taking advantage of prevalence of digital cameras and the development of advanced computer vision technology, the paper proposes to reconstruct a building facade and recognize its surface materials from images taken from various points of view. These can serve as initial steps towards automatic generation of as-built BIM. Specifically, 3D point clouds are generated from multiple images using structure from motion method and then segmented into planar components, which are further recognized as different structural components through knowledge based reasoning. Windows are detected through a multilayered complementary strategy by combining detection results from every semantic layer. A novel machine learning based 3D material recognition strategy is presented. Binary classifiers are trained through support vector machines. Material type at a given 3D location is predicted by all its corresponding 2D feature points. Experimental results from three existing buildings validate the proposed system.

Simulation Research on Fire Evacuation of Large Public Buildings Based on Building Information Modeling

Reasonable evacuation strategies are important in reducing casualties in the event of a fire.In this work,we conduct a simulation of a fire evacuation of a large public building based on the building information modeling technology to find the best evacuation strategy.We identify the tolerance limit of evacuees in case of a fire as the basis of the simulation using the fire dynamics simulator software.The following four evacuation strategies are proposed and simulated:stratified evacuation only by stairs,stratified evacuation mainly by stairs and supplemented by fire elevators,holistic evacuation only by stairs,and holistic evacuation mainly by stairs and supplemented by fire elevators.The case study of a college canteen shows that if 10%of evacuees(mainly elderly people who walk slowly and children who take up less space)are instructed to evacuate via fire elevators and the other 90%of evacuees(young men and women who move fast)use the stairs,the evacuation time can be reduced to a minimum.Some improvements in the design drawing result in the enhanced efficiency of the proposed strategy.The findings of this work are of great significance for the optimization of the structural design of large public buildings and provide some references for emergency evacuation.

Construction Process Simulation and Safety Analysis Based on Building Information Model and 4D Technology

Time-dependent structure analysis theory has been proved to be more accurate and reliable compared to commonly used methods during construction. However, so far applications are limited to partial period and part of the structure because of immeasurable artificial intervention. Based on the building informa-tion model (BIM) and four-dimensional (4D) technology, this paper proposes an improves structure analysis method, which can generate structural geometry, resistance model, and loading conditions automatically by a close interlink of the schedule information, architectural model, and material properties. The method was applied to a safety analysis during a continuous and dynamic simulation of the entire construction process. The results show that the organic combination of the BIM, 4D technology, construction simulation, and safety analysis of time-dependent structures is feasible and practical. This research also lays a foundation for further researches on building lifecycle management by combining architectural design, structure analysis, and construction management.

城市级实景三维与BIM集成技术研究与实践

针对实景三维与建筑信息模型(building information model,BIM)集成中面临的数据格式多样、坐标体系不一、数据体量巨大和空间组织繁杂等诸多问题,结合深圳市实践,提出了BIM标准、坐标转换、模型轻量化和模型组织调度等关键技术,并在工程实践中验证了可行性。

Proposed Methodology for Generation of Building Information Model with Laserscanning

For refurbishment and state review of an existing old building, a new model reflecting the current state is often required especially when the original plans are no longer accessible. Laser scanners are used more and more as surveying instruments for various applications because of their high-precision scanning abilities. For buildings, the most notable and widely accepted product data model is the IFC product data model. It is designed to cover the whole lifecycle and supported by various software vendors and enables applications to efficiently share and exchange project information. The models obtained with the laser scanner, normally sets of points ('point cloud'), have to be transferred to an IFC compatible building information model to serve the needs of different planning states. This paper presents an approach designed by the German Research Center in Karlsruhe (Forschungszentrum Karlsruhe) to create an IFC compatible building information model from laser range images. The methodology through the entire process from data acquisition to the IFC compatible product model was proposed in this paper. In addition, IFC-Models with different level of detail (LoDs) were introduced and discussed within the work.