Analysis of Intelligent Construction Technology of Building Prefabricated Components Based on BIM

In this paper,the intelligent construction of prefabricated components is analyzed based on building information modeling(BIM).It includes an overview of BIM-based prefabricated components and intelligent construction,intelligent production lines in BIM-based intelligent construction systems,and analysis of the application of intelligent manufacturing in BIM-based prefabricated components.It was found that the determination of construction goals,the establishment of intelligent construction systems,and the application of intelligent construction systems are all areas that need to be emphasized in producing prefabricated building components through intelligent construction.It is hoped that this analysis can provide some reference for the application of intelligent construction and the improvement of the quality of prefabricated building components.

Jinan Huaneng Pneumatic Components and Devices Company

The Jinan Huaneng Pneumatic Components and Devices Company (Jinan Pneumatic Components Factory) is a large Class-Ⅱ enterprise, with the multiple functions of scientific research and development, production and processing, operation and sales, technical service, import and export, and personnel training. Following the renovation of its key technology in the Seventh

Key Technology and Complete-set Equipment for Intelligent Construction of HSR Simply-supported Girder Reinforcement Framework

In view of the problems such as backward production mode,poor quality stability,high safety risk and incomplete control system during erection of the reinforcement framework of simply-supported box girders for high-speed railway(HSR),and in combination with the key points and main challenges in the reinforcement framework construction of Guangzhou-Zhanjiang HSR,the overall technical route for the intelligent manufacturing of reinforcement framework of simply-supported box girders is put forward.The component design of reinforcement framework of simply supported box girder is carried out based on BIM,and the feasibility of the scheme is verified through segment assembly test.The assembly techniques are studied in combination with the mesh design scheme to achieve rapid forming of the reinforcement framework.R&D of automatic processing equipment for components,material transshipment equipment,automatic hoisting equipment and technological equipment for assembly clamping fixture are carried out to realize the overall design of equipment production line.An intelligent control system is developed for the whole-process intelligent construction of reinforcement framework to realize the full life-cycle applications for the workshop production and visual management including intelligent layout and quality traceability.The research results systematically optimize and innovate the assembly and forming technologies of reinforcement framework in the prefabrication beam yard of high-speed railway,realize the component processing,automatic assembly and information technology management,improve the construction quality,efficiency and information technology level of intelligent manufacturing of reinforcement framework of railway prefabricated beam as a whole,and reduce the construction cost of the project.The research has realized a major breakthrough in the construction technology of railway prefabricated box girders,which has the extensive technical and market promotion values.

Forecasting of development of the Jiangsu construction industry and its case analysis

In order to grasp the development path of the Jiangsu construction industry, a multivariable linear regression model for forecasting is proposed. Five factors affecting development of the Jiangsu construction industry are chosen as explanatory variables. They are the construction industry＇s fixed assets K, the gross domestic product （GDP）, real estate added value （REAV）, construction industry export （WS）and investment in construction and installation projects（JA）. The principal component analysis is used to resolve multicollinearity between them. The construction added value （CAV） is chosen as a dependant variable, and the growth model of the Jiangsu construction industry is established. Statistical data from 1990 to 2008 are used to test the prediction accuracy of the model. The predictive results show that from 2009 to 2012, the average annual growth rate of the Jiangsu construction industry added value will be 17. 65% while the GDP growth rate will be 14. 16% . the Jiangsu construction industry will grow faster than the GDP in the near future. The construction output of the GDP continues to rise, and its pillar position will be further strengthened.

Allocation of New Construction Land Based on Land Competitiveness Evaluation

Connotation of land competitiveness is expatiated from both the narrow sense and broad sense. Evaluation index system of land competitiveness is established according to the 2008 China Statistical Yearbook and 2008 China Land Resources Statistical Yearbook. Efficiency Coefficient Method and Principal Component Analysis Method are used to evaluate the land competitiveness of 31 provincial units in China. Result shows that in the year 2007, land competitiveness gradually decreases from southeast to northwest. The land competitiveness and GDP per unit land have significant negative correlation. The rank of approved new construction land has low positive correlation with the rank of land competitiveness in China. This indicates that there is little correlation between the allocation of regional new construction land and the land use efficiency. Therefore, it is suggested that regional allocation of new construction land should be treated differently based on the evaluation result of land competitiveness.

A study on the construction of interior architecture in Hankou

In this article, we set out from the library practical application, combined with the design of the built environment of space, lighting, color and other basic elements, build a library building to explore the internal environment. Application by Building Environment and Energy Engineering Practice teaching profession as well as social needs of research, combined with the professional status of teaching practice, Jiangsu University, discusses the necessity to build a new practice teaching system. In the student-oriented, systematic principles and openness from the three aspects of the practice of teaching objectives, practical teaching, practice teaching management and examination and evaluation systems of practical teaching system reform, to make the practice of teaching students to become ability , the real meaning of the ability to solve practical problems and innovative spirit are re？ ected, for training for the development needs of the times by the employers and quali＇ ed personnel create the conditions. Entering the new century, sustainable development has become a more serious topic in the world, in order to more effectively control and use of our environmental resources, many countries have formulated relevant building environmental assessment system.

Radial Tire Construction Design Method Based on Finite Element Simulation

The simulation of 295/80R22. 5 tire building process from tire building to curing was developed using ABAQUS software,which covered four stages: gluing of components on main drum,gluing of components on auxiliary drum,building process of green tire and shaping process of green tire. Results showed that material distribution of the simulated structure had good consistence with the real tire structure. Therefore,the tire building process simulation can be used to judge the rationality of tire construction design and to determine the shapes of different tire components. In order to optimize the construction design,a reverse simulation method was proposed to design the semi-product components such as apex,tread,and shoulder pad. The semi-product components determined by utilizing the reverse simulation method were assembled again into a tire. Results show that the simulated material distribution is consistent with the material distribution of design tire,which proves effectiveness and reliability of the reverse simulation method.

Optimal blockchain network construction methodology based on analysis of configurable components for enhancing Hyperledger Fabric performance

Presently,blockchain technology has been widely applied in various application domains such as the Internet of Things(IoT),supply chain management,healthcare,etc.So far,there has been much confusion about whether blockchain performs with scale,and admittedly,a lack of information about best practices that can improve the performance and scale.This paper proposes a novel blockchain network construction methodology to improve the performance of Hyperledger Fabric.As a highly scalable permissioned blockchain platform,Hyperledger Fabric supports a wide range of enterprise use cases from finance to governance.A comprehensive evaluation is performed by observing various configurable network components that can affect the blockchain performance.To demonstrate the significance of the proposed methodology,we set up the experiment environment for the baseline and the test network using optimized parameters,respectively.The experimental results indicate that the test network's performance is enhanced effectively compared to the baseline in transaction throughput and transaction latency.

The changes of community components and their horizontal patterns caused by highway construction in the Longitudinal Range-Gorge Region

拿 Dabao (从达利城市到 Baoshan 城市)并且 Sixiao (从 Simao 城市到 Xiaomengyang 镇)在例子，社区部件的变化和他们的水平模式由高速公路建设引起了的纵的范围峡区域的高速公路与一些数学方法在这篇文章被讨论，例如对比分析，差别分析等等。结果显示：1 ) 在高速公路建设，占优势的种类和亚 predominant 的骚乱下面，路边上的乔木和灌木植物的种类数量将减少到某程度，草本的植物的将增加很多，并且某入侵的种类将出现并且散布。2 ) 在路边上由高速公路建设，占优势的种类的分布和亚 predominant 种类影响了将从制服或随机的模式变化聚集模式，并且他们的总数度和扩散性将显然增加。3 ) 道路附近的 Ageratina adenophora 和 Chromolaena odorata 的平均范围度和高度远比那高离开道路，但是 2 种类的频率没在 200 m 以内在路边上有明显的变化。4 ) 道路节的位置和地形也是影响社区部件的重要因素，社区部件上的影响紧张由 Dabao 高速公路引起了的计算结果表演比由 Sixiao 高速公路，和在 2 不同地形会之间的影响紧张的比较结果引起了的高：山腹 > 山顶。

甘肃积石山6.2级地震村镇建筑震害调查与分析

积石山地震对甘肃和青海部分地区房屋建筑造成了严重破坏。调查了地震烈度7度和8度地区的11个调查点的村镇建筑震害。震害调查表明:地震灾区主要为乡镇和农村地区,房屋结构类型主要为土木、砖木和未设防砖混结构;在烈度8度地区,土木结构房屋主要表现为严重破坏或倒塌破坏,砖木结构和未设防砖混结构房屋主要表现为中等破坏和严重破坏,设防砖混和钢筋混凝土框架结构房屋主要表现为轻微破坏和中等破坏;在烈度7度地区,土木结构房屋以中等破坏为主,砖木结构和未设防砖混结构房屋以轻微破坏和中等破坏为主,设防砖混和钢筋混凝土框架结构房屋以轻微破坏和基本完好为主。此次地震震害较同级别地震偏重,与震区复杂地形、地震动峰值放大效应、建筑砌筑质量差和结构受力不合理等因素相关。建议进一步开展复杂地形场地放大效应及频谱影响研究,重视建筑非结构构件抗震宣传与实用技术研发。

基于综合效益的预制构件应用优先顺序研究

从企业视角出发,依据可持续发展的三重底线原则,筛选预制构件综合效益测算指标,运用三角模糊数进行指标赋权,并建立综合效益测算模型。通过定额测算和专家评分法获取各预制构件的指标表现及综合效益,进而确定预制构件应用的优先顺序为叠合板、预制内隔墙、叠合梁、预制剪力外墙、预制剪力内墙、预制非剪力外墙。该研究结果可为装配方案和装配式建筑推广政策的制定提供参考。

装配式混凝土PC构件施工技术及力学性能分析

为高效而精确地完成装配式混凝土结构的施工,以中建东湖锦城项目为载体对装配式混凝土PC构件的施工技术进行了分析,尤其是装配式混凝土PC构件起吊安装定位和标高等施工控制,同时进行了力学计算分析。工程实践表明,装配式混凝土PC构件的应用可提高施工效率和节约施工时间。

面向跨平台可复用组件的交叉编译工具设计与实现

伴随着软件三化(通用化、系列化、组合化)的发展,军用领域软件跨平台可复用已成为一种趋势。针对这一趋势,文章设计并实现一种面向跨平台可复用组件的一体化交叉编译工具。首先介绍了基于组件框架的组件跨平台技术,其次从工具链管理、项目向导、并行构建管理等方面进行了交叉编译工具的设计,最后通过实现的编译工具同时编译出龙芯锐华、DSP锐华和ARM麒麟等多个目标平台的组件目标文件。实验结果表明,该交叉编译工具可支持组件的跨平台复用,提升了软件的复用性和可移植性,具有重要的理论和现实意义。

装配式住宅工程标准层施工效率分析

随着中国建筑业的飞速发展,装配式建筑这一新型的施工方法逐渐成为建筑行业的主流,建筑行业也逐渐工业化、标准化。以实际工程为例,对装配式住宅工程标准层施工工艺与施工效率进行阐述、分析,总结出装配式住宅工程标准层施工工艺及施工功效,从而为其他类似装配式住宅工程的施工管理提供一定的参考,并推动绿色建造水平发展。

面向大规模定制的建筑工业化智能设计方法研究

为了推动大规模定制的建筑工业化模式,提出了两种适用于工业化建筑的智能设计方法:面向装配的设计方法和面向销售的设计方法,并以轻钢龙骨式结构建筑为例,展示了设计流程和案例说明。面向装配的设计方法以二维板块化部品为基本单元,以直接面向工厂下订单为目标,首先建立具有预先标定结构性能的建筑部品数据库,在生成建筑平面后,再将结构荷载分配到每个墙体、楼面部品上,自动匹配所需的建筑部品型号,并进行整体结构验算。面向销售的设计方法以三维建筑模块为基本单元,以直接面向销售下订单为目标,定义具有各种功能的模块并建立生成式设计规则,在建筑初步设计阶段考虑因不同的建筑布局而产生的不同建筑成本,并通过遗传算法优化建筑布局和成本。这两种方法选择的部品和模块均符合工业化大规模生产的要求,为实现大规模生产的工业化设计流程提供了新思路。

港口船舶溢油事故应急联防建设区域划分及主体选择评价

在一定的区域范围内建立港口船舶溢油事故区域应急联防体系,对于促进联防区域内应急资源共享、提高船舶污染事故应急能力具有重要意义。基于区域间各个码头的航路网络,利用ArcGIS软件的空间分析工具进行时间可达性分析,确定符合有效应急时效的联防建设区域。进而,从码头泊位情况、溢油事故参数、货物吞吐量、管理水平等方面分析了影响区域联防建设的因素,并基于主成分分析-BP神经网络方法建立了码头区域联防建设主体评价模型。研究表明,得到的应急联防建设区域划分及主体选择评价模型能够客观地反应评价对象的真实情况。在应急联防建设中,可以根据实际需求,参考评价结果选择建设方案。

预制装配率对装配式建筑工程造价的影响分析

针对装配式建筑相较于传统现浇式建筑工程造价增加问题,依据相关计算规则,在满足规范预制装配率的前提下,对不同类型装配式建筑、不同预制装配率的混凝土小高层住宅及不同预制构件类型的工程造价进行对比分析,探讨预制装配式建筑与传统现浇式建筑间的成本差异,并从经济角度出发,对预制构件、部品及技术的优先选择进行排序,以期为优化PC深化设计,探究投资最少、成本最低的预制装配率方案提供参考。

装配式办公楼的深化设计

与传统建筑相比,装配式建筑具有施工周期短、质量可控、节能环保等优势。然而,在深化设计过程中,传统的二维CAD软件无法提供全面的三维设计和模拟功能,容易导致设计与实际施工之间存在差异。因此,引入BIM技术作为装配式建筑深化设计的工具,可以更好地实现设计与施工之间的衔接,提高工程质量和效率。

发泡陶瓷建筑装饰构件

发泡陶瓷主要利用陶瓷抛光废渣、矿山尾矿进行再生产,有效解决了固体废弃物处理难题,实现了资源再利用,具有良好的经济环保效益。论文研究了发泡陶瓷建筑装饰构件,在掌握工程概况的基础上,分析了发泡陶瓷构件的生产工艺,力求探索更好的生产方案,同时,从图纸解析、施工准备、关键工序、质量控制、进度控制等方面出发,分析发泡陶瓷建筑装饰构件安装施工技术,将生产与施工有效结合,减少施工质量隐患。

隧道中的全预制装配式混凝土楼梯施工技术研究

针对传统市政领域用混凝土现浇楼梯结构施工时需进行外围脚手架搭设,现场人工、模板、支撑构件等消耗量大,混凝土浇筑和振捣困难,施工周期较长的问题,基于一项设计优化后的全预制混凝土楼梯方案,将楼梯结构中的预制梯段板、梯柱、梯梁和平台板构件全部预制,仅部分节点和拉结梁采用现浇,大大减少了现场脚手架搭设和支模板支设工作。通过研究和编制专项构件预制方案、装配式楼梯施工方案,利用装配式施工优势提升了构件质量,改进了现场施工条件,缩减了施工周期,总体应用效果良好。总结的经验可供类似工程参考。