基于BIM的长距离引调水工程三维参数化智能设计研究及应用

为了摆脱以往三维设计中效率低下的重复性工作,提高长距离引调水工程三维设计的水平和效率,从建筑物建模之初就融入参数化设计理念。首先建立引调水工程典型建筑物BIM模型,再基于组件对象技术(COM)与Inventor API(应用程序接口)技术,采用C#编程语言开发出一套基于C/S框架的三维参数化智能设计平台。通过研究引调水工程的BIM标准化关键技术,建立存储各类模型及其信息的数据库,并对Navisworks可视化仿真软件进行二次开发,融合基于云平台的协同设计技术,实现工程图纸的高效快速生成、施工进度仿真以及协同办公等功能。该系统已经应用于某长距离引调水工程中且效果显著,应用前景广泛。     

Design coordination strategies in a 2D and BIM mixed-project environment: social dynamics and productivity

ABSTRACT

Despite the rapid spread of building information modelling (BIM), the majority of BIM projects are still conducted in a mixed-project environment: two-dimensional (2D) drawing and BIM. The design-coordination productivity and information-exchange patterns are analysed for a unique case where two towers, A and B, of a hospital project deployed two different design coordination strategies in a 2D and BIM mixed-construction environment. The tower A strategy coordinated designs using drawings as the main source of information and confirmed them using BIM (BIM-assisted coordination), whereas the tower B strategy coordinated designs using BIM and confirmed them using drawings (BIM-led coordination). The coordination productivity was 228% faster for tower B than for tower A. The frequency of design changes was much lower for tower B (0.42 times/drawing) than for tower A (2.13 times/drawing). As the result, the design coordination for tower A was delayed by 9.3 months, whereas tower B was completed rapidly and without any delay. A social network analysis revealed that the BIM-led coordination was supported by the relatively even distribution of information, the reduced control of an mechanical, electrical and plumbing (MEP) engineer over a project, and higher accessibility to the information for every project participant.     

BIM在水库移民安置点基础设施设计中的应用

水库移民安置点基础设施工程设计主要内容包括道路、竖向、给排水、电力通信等。在制定安置点方案过程中,由于移民想法经常发生变化,因而规划布局具有不确定性,设计工作常需重复调整,工程量大。为了适应安置点方案的多变性,将BIM应用于移民安置点基础设施工程设计中,建立了场地、道路及管网等设施的三维模型,实现三维曲面、横断面、纵断面、标注等数据的动态更新,自动生成各种图形并计算相应工程量,且图形和工程量会随模型的变化而及时更新。与传统方法相比,该方法可大幅提高设计效率,使设计成果更加直观。     

浅析CIMS在建筑行业的发展前景

指出了建筑行业运用CIMS的必要性和趋势,分析了目前我国建筑行业管理和运营的现状及存在的问题,并以CIMS为基础提出解决问题的方法。     

建筑幕墙行业贯彻十二五规划的思考和探讨

本文仅就三个侧面:十二五城市化与高层建筑;光电建筑--三代光电幕墙、光电屋顶;中国建筑幕墙行业应尽快推行BIM,对建筑幕墙行业如何贯彻十二五规划进行思考和探讨.     

浅析BIM5D数据模型在钢筋工程中的应用

本文简要地分析了BIM5D技术在钢筋工程中的应用。首先叙述了BIM5D数据模型的概念,然后描述了基于BIM5D数据模型的钢筋算量产品的技术架构以及三维呈现结构。展示了基于BIM5D数据模型的钢筋算量产品实现,包括BIM数据和成本、时间。大量实际应用表明,基于BIM5D数据模型的应用计算准确性高,三维可视化结果清晰明了,提高了钢筋工程的效率。     

基于BIM的龙岩金融商务中心B3号楼结构设计

BIM的广泛应用必将使建筑设计由二维向三维变革。在龙岩金融商务中心B3号楼的设计中,利用RE-VIT软件进行建模,成功地将REVIT模型导入计算软件SATWE以及SAP2000;利用INVENTOR软件建立钢结构节点三维模型,并在此基础上对节点形式进行了修改;从REVIT模型中导出杆件单线图便于节点建模,并使用有限元软件ANSYS进行节点分析;最后利用REVIT和INVENTOR软件绘制结构施工图。     

Structure and spatial consistency of network-based space layouts for building and product design

Network-based space layouts are schematic models of whole spaces, subspaces, and related physical elements. They address diverse space modeling needs in building and product design. A schema (data model) for network-based space layouts is defined that is influenced by existing space schemas. Layout elements and selected spatial relations form a geometric network. The network is embedded in 3-space and facilitates analysis with graph and network algorithms. Spatial constraints on layout elements and spatial relations extend the schema to support spatial consistency checking. Spatially consistent layouts are required for reliable network analysis and desirable for layout modification operations. An operation is introduced that evaluates spatial constraints to detect and semi- or fully-automatically resolve spatial inconsistencies in a layout. A layout modeling system prototype that includes proof-of-concept implementations of the layout schema extended by spatial constraints and the inconsistency resolution operation is described. Layouts of a floor of an office building and a rack server cabinet have been modeled with the system prototype.     

双马来酰亚胺（BMI）树脂生产技术及用途

概述了双马来酰亚胺树脂的聚合基理及其改性方法，并就其应用与发展作了较深刻的探讨。     

点云库在既有地下工程 BIM 模型自动化重建中的应用

随着三维激光扫描技术与 BIM 技术在建设工程领域的结合应用,当前存在着点云数据建模效率低下的实际问题。PCL 点云库作为大型跨平台开源 C++编程库,在点云数据的后处理方面可以发挥巨大作用,通过整体分析点云库主要模块的功能特性,并针对地下工程场景的实际特点,研究了基于点云库完成平立面点云模型分割,管线设施聚类提取等方面的应用,并利用点云 VFH 特征描述向量的差异性建立构件模型库,由此形成点云向 BIM 模型的自动化重建流程方法,不仅提高了建设工程领域信息化建设的发展水平,又可为在后续运维管理阶段实现 BIM 技术更深层次的应用提供新的思路