高层建筑施工悬挑脚手架应用与安全控制

在现代高层建筑工程中,悬挑脚手架具有施工成本低廉、易于搭设、安全可靠、就地取材的显著优势,得到广泛应用,逐渐取代了传统的落地式脚手架和附着式提升脚手架,对工程建设质量、施工作业效率、工程综合效益的提升起到十分积极的影响。但由于悬挑脚手架应用时间较短,一些施工企业对悬挑脚手架施工经验匮乏,容易产生质量安全隐患。基于此,本...     

施工科技简讯

北京房修一公司编制出《脚手架工程图册》脚手架是建筑工程中必不可少的施工工具。为了促进建筑脚手架施工的标准化,北京市房修一公司以国家规范为依据,参照大量资料,并结合公司多年来的施工经验,编制出第一本《脚手架工程图册》。     

泄洪闸较大体积倒悬体(牛腿)模板设计

泄洪闸牛腿模板支立一般采用脚手架支撑，根据本工程的特殊性，在施工中采用上部吊模的方式，可节约脚手架的投入量及安装量，同时，本工程的较大型钢模板设计也是在水电工程上较少使用。本文能对泄洪闸牛腿施工起一定的借鉴作用。     

新型整体电动导轨式升降脚手架的应用

近年来,随着高层建筑的不断出现,传统钢管脚手架已不能适应现代高层建筑施工的发展需要,挑式、吊蓝式、挂式、导轨式升降脚手架应运而生,尤其导轨式升降脚手架的出现,不断凸显其对高层建筑施工具有良好的适应性和经济性,XHR—01型导轨式升降脚手架目前在国内处于技术领先地位。其独特的导     

中国高空作业平台前景可期 捷尔杰全力扩产满足客户需求

正随着人工成本的不断提高、人口红利逐渐消失、施工安全意识日益加强、高空建设施工安全规范全面完善,相对传统脚手架等登高作业设备而言,高空作业平台在安全性和经济性方面的优势愈发凸显,市场的需求量也随之攀升。据智研咨询发布的《2018—2024年中国高空作业平台制造市场专项调研及投资前景分析报告》(以下简称报告)预计,2018年中国市场整体需求     

月河拱管桥整体吊装施工方法及安全措施

跨河大型拱管桥在无道路的情况下,普遍采用施工难度较低,安全性较高的满堂脚手架施工,而满堂脚手架受季节性洪水和航运的影响较大。我公司在施工安康铁路水源工程月河拱管桥时,采用单     

化工装置操作规程的在线应用

以丁二烯装置的操作规程电子平台的实施为案例,详细介绍了操作规程的在线应用、装置在线运行维护以及在线培训等内容。通过结合工厂实际进行的模块设计、开发与组态操作规程电子平台,实现了实时数据库、操作规程数据库与操作监控数据库的集成,提高了丁二烯装置生产操作中的信息化水平。     

全新GenieZ-60/37FE曲臂型高空作业平台再征BAUMA展

正特雷克斯高空作业平台事业部在2016年BAUMA展推出一款新型燃料电动型高空作业平台——Genie Z-60/37FE曲臂型高空作业平台。全新混合型Genie Z-60/37FE曲臂型高空作业平台提供"全电动"和"混合动力"两种作业模式。"全电动"作业模式是指设备完成一次充电后,可以全天零排放地进行操作";混合动力"作业模式是指设备仅使用1箱柴油,即可施工操作超过1周的时间。     

柔性短肢工字钢悬挑脚手架施工技术

随着城镇化建设的推动,国民生活水平、居住环境的不断提升。不断涌现出一批批高层和超高层建筑,施工环境愈趋复杂,项目的安全质量问题显得尤为重要。为了提高施工质量,规划现场安全文明施工,节约工期及费用,规避传统工字钢悬挑脚手架存在的不足。中铁城建集团南昌建设有限公司承建的南昌青山湖区沈桥村安置房项目使用了柔性短肢工字钢悬挑脚...     

数字式电焊机电流遥控装置

使用电焊机时,总感到调节电流大小不方便,特别是在远距离或高空操作就更为明显。曾经有人在焊枪上装个附加装置来实现遥控,但由于操作场所经常变动,且多半是在室外操作,所以操作者极易把附加装置丢失或摔坏。本文介绍的这种装置是把控制部分安装在电焊机内,仍旧使用原来的焊枪。操作时只需按一     

提篮式型钢悬挑脚手架特殊工况验算方法探讨

为了实现提篮式型钢悬挑脚手架在实际工程中的广泛应用,对不同工况下的提篮式型钢悬挑脚手架进行了精准设计和有效验算,采用理论分析法得出了 一般工况下提篮式型钢悬挑脚手架的主梁和拉杆内力表达式,在此基础上结合现场实际情况建立了多种特殊工况的验算方法.然后采用单因子变量法给出了多种特殊工况下的计算实例,并结合计算结果和现场施工...     

Identifying customer behavioral factors and price premiums of green building purchasing

In recent years, global urbanization and overdevelopment have resulted in environmental degradation and an energy crisis. Promoting green buildings is among the most effective methods for achieving environmental sustainability. Although the initial costs of green buildings are higher than those of ordinary buildings, people perceive that the environmental benefits of green buildings justify their higher price premiums. From a developer's perspective, devising optimal pricing strategies according to customer-perceived prices and developers' expected profit is complex and difficult. Hence, in this study, we developed a framework based on the Howard–Sheth model of consumer behavior to identify behavioral factors that may affect consumer purchases of green buildings. An artificial neural network (ANN) was then used to develop a pricing model for predicting the price premiums of green buildings. The results revealed that the ANN model's overall prediction capability was 94%; the model's robustness was demonstrated by comparing the results produced using the model with those produced using a multiple regression analysis. In addition, the characteristics of consumers who were willing to accept higher price premiums for green buildings were identified and discussed. The proposed model can be applied as an effective decision-support tool for green building pricing and formulating marketing strategies.     

基于组合赋权法的高层住宅开发风险评价模型——以新疆北部地区为例

为得到影响新疆北部高层住宅开发的关键风险,建立合适的风险评价模型是关键。综合考虑新疆北部及高层住宅开发的特征,建立了北疆高层住宅的风险评价体系,通过AHP-熵值法构建北疆高层住宅风险评价模型。实例结果表明,政策风险(权重38.25%)、经济风险(权重18.58%)和市场风险(权重14.63%)影响较大,可见政策、经济、市场风险是影响北疆高层住宅开发的关键风险。     

生态可持续发展理论在澳洲城市建筑中应用

论文通过对澳大利亚2座最为优秀的绿色建筑的考察和比较,理清了当今先进的绿色建筑的一般发展策略和实践经验,即其核心关注的目标都是提升室内的环境质量并同时减少对外部环境的损害;其关键环节是建筑节能,还需要整合多项新技术、选用各种新材料,并将管理程序和人性化关怀相协调。上述成功案例的经验对我国绿色建筑的投资、规划、设计、建造和使用管理都会有一定的参考价值。     

Techno-ökonomische Bewertung von Energie-Autarkie für die Energieversorgung von Einfamilienhäusern

Many consumers currently follow the idea of energy self-sufficiency and try to contribute to meet their energy needs in order to become independent and self-sufficient from the central power supply system. In order to achieve load-oriented energy self-sufficiency the provision of energy must cover the full energy demand at any time. Against this background, in this paper the costs and potentials of a load-oriented energy self-sufficiency of single-family homes are analysed. Thereby it is differentiated between electricity-, heat- and energy self-sufficiency. The modelling is carried out with the simulation environment ?Polysun Designer“ which allows a high temporal dynamic simulation of the annual energy demand and supply.The results show that, within the investigated supply variations, the highest levels of energy self-sufficiency can be achieved by an energy supply system completely based on electricity using a combination of PV; heat pump and battery storage. Depending on the building standard, a maximum of 45 (existing buildings) and 71?% (new buildings) of the building’s energy demand can be covered with renewable energy. The economic evaluation however has shown that under present conditions, none of the investigated supply variants can compete with conventional energy supply (public grid connection + gas condensing boiler).     

Green Noise or Green Value? Measuring the Effects of Environmental Certification on Office Values

This study investigates the price effects of environmental certification on commercial real estate assets. It is argued that there are likely to be three main drivers of price differences between certified and noncertified buildings. These are additional occupier benefits, lower holding costs for investors and a lower risk premium. Drawing upon the CoStar database of U.S. commercial real estate assets, hedonic regression analysis is used to measure the effect of certification on both rent and price. The results suggest that, compared to buildings in the same submarkets, eco‐certified buildings have both a rental and sale price premium.     

北方寒冷地区农村既有建筑按需节能改造效益分析——以河北省保定市阜平县某农居为例

为了改善北方农村既有建筑无保温措施、建筑热负荷高而造成的冬季采暖能耗高、供暖经济负担重、污染排放多及环境差的现状,需对农村既有建筑进行围护结构节能改造。根据河北省农村户均常住人口现状及保定市阜平某农村既有建筑的调研分析,确定仅对人员频繁活动的房间进行改造的4种按需节能改造方案,并针对4种按需节能改造方案及现有的整体节能改造方案进行能耗模拟、成本核算,分析其环境效益和经济效益。结果表明：只按需改造墙体、不改造屋顶和地面的静态投资回收期最短为4.03年,按需改造全部围护结构的回收期最长为5.9年,现有的整体改造方案为11.88年。农村居民可根据自身需求及经济条件选择合适的节能改造方案,研究结论可为河北省乃至整个寒冷地区农村既有建筑围护结构节能改造政策的制定及技术的应用推广提供理论依据和数据参考。     

胜利五号钻井平台结构抗冰安全评估

简述了胜利五号钻井平台的结构特点；建立了平台计算的有限元模型；依据多年实测的渤海海冰数据，确定了海冰的性能参教；根据API公式确定了平台所受的冰载；用ANSYS软件进行了平台应力和变形分析；最后给出了结论：胜利五号钻井平台可在冰厚小于0．4m的条件下安全工作。