无源滤波器无功补偿容量分配及支路投切顺序生成

为解决用于矿井无功补偿和谐波抑制的无源滤波器设计及控制问题,兼顾矿井负荷运行特性和谐波源电流进行无源滤波支路初始无功补偿容量分配,考虑到煤矿负荷因其生产特点而呈阶梯性变化,提出一种计算滤波支路负载率的方法,并应用禁忌搜索算法进行无源滤波器参数优化设计。以补偿容量满足系统功率因数要求及开关操作成本最小为目标,操作过程中不产生谐波放大、功率因数不超出合格范围为原则,建议了一种滤波器运行方式切换操作顺序自动生成方法。最后应用一个实际工程算例进行分析和说明,结果表明本文提出的方法具有良好的可行性。     

深挖路堑边坡失稳模式及防治措施的研究

对某深挖路堑边坡失稳进行原因了分析与稳定性平价,并依据路堑边坡地质条件和失稳模式,采取了相应的工程治理措施,使工程边坡达到长期稳固的目的。     

矿山电力电缆故障点的简易测距技术

电力电缆在运行过程中难免会因为各种原因发生故障,影响正常供电。由于电缆发生故障后外观无明显变化,查找故障点十份困难;重点剖析了电缆线路故障的性质以及故障点的测距方法。     

云南偏远山区少数民族民居的绿色更新——方法与实践

文章通过对偏远乡村少数民族民居现状的分析研究,提出了其绿色更新的被动式设计方法,即充分利用当地的土、木、瓦材料,利用自然资源,以简单可行的方法,结合当地建造传统及现代建筑技术,形成建筑的地域适应性技术,从而切实改善原住居民的人居环境,构筑出与当地发展水平相适应的新民居,以此实现少数民族民居的绿色更新与发展。作者进而介绍了云南偏远山区傈僳族民居的设计案例及其绿色更新的实践,希望以此促进偏远地区民居人居环境条件的提高与改善,进而实现其健康适宜、与环境和谐相融的绿色更新。     

寒冷地区“被动房”住宅能耗计算时长划分标准研究

被动房作为可持续建筑研究领域的重要研究对象,逐渐受到国内建筑师们的关注。以德国被动房认证标准为参考,对适宜于我国"被动房"住宅能耗计算时长的划分标准进行研究,该划分标准以我国寒冷地区气候特征作为根本依据,从"舒适"与"健康"两个角度进行划分指标的设定,以此建立了我国寒冷地区"被动房"住宅能耗计算时长的划分标准,最后以天津市为例进行了建筑用能时长的对比分析。     

建筑生态系统观指导下的小学被动太阳能建筑设计初探

如果把建筑、人、绿地归属同一"建筑生态系统",则太阳能、建筑、植物的生长、小学生的心理和行为模式都是相互影响、相互作用的.以2009年台达杯太阳能小学设计竟赛为例对此进行了研究.建筑方案的生成过程就是对这个系统中各要素作用的分析及方案优化过程,建筑最终的形态布局和立面处理手法则是经过分析后所寻求的一种最优化组合.     

A pathway for net-zero energy buildings: creating a case for zero cost increase

To have market relevance and gain widespread market adoption, zero energy buildings (ZEBs) will need to be designed and constructed cost-effectively, and preferably without additional costs. An approach was developed to create low-energy buildings without additional construction costs such that it yielded innovation in building technology and integration by the market. A case study of the implementation of this method is presented to provide a data point that ZEBs can be built with zero cost increase. Documenting cost-control best practices and packaging those strategies for adoption by the commercial building sector will help make the business case for ZEBs for mainstream construction and promote market uptake of the innovative technologies and design approaches needed. The holistic implementation of cost-control strategies will enable ZEBs to be designed and constructed on a typical budget. The current state of ZEB economics is evaluated and a path forward is proposed for greater market penetration of ZEBs. By demonstrating how to combine ZEB technologies and design approaches into an overall efficiency package that can be implemented at minimal (zero, in certain cases) incremental capital cost, the domain of ZEB design and construction can be expanded from a niche market to the commercial construction mainstream.     

中国被动房外围护系统研究——以寒冷、严寒气候区被动房项目为例

德国的被动房是目前世界公认的具有超低能耗、超低碳排放量、超高室内舒适度等特点的建筑技术体系。德国的气候特征与中国华北地区的气候特征具有相似性,因此,研究并建造被动房对于我国建筑节能工作的发展具有重大的意义。外围护系统作为被动房设计的重点要素,对建筑的节能效率有重大的影响。以寒冷、严寒气候区的被动房项目为例,对被动房外围护系统进行分析与阐述,并以秦皇岛"在水一方"被动式住宅示范项目为例,进行能耗模拟与对比分析。提出适合我国寒冷、严寒气候区气候特点的被动式超低能耗建筑外围护系统的设计策略。     

江苏沿海地区装配式透气节能墙板及其所装配的墙体研究

为了实现江苏沿海城市地区住宅内部空气调节的节能作用,以及顺应当前装配式建筑需求,从住宅的墙体入手,利用模拟软件CAD和SU对墙体的外部形状及内部构造进行系统模拟优化设计。确立所描述的沿海地区装配式透气墙板及其所装配的墙体,从风能的利用通过墙板的内部构造以实现室内被动式空气调节效果,从墙体自身外部构造的特殊性来实现组合墙体的稳定性及抗震性。为以后建筑装配式节能围护部件做了一些补充。     

Shear slotted bolted connection

Slotted bolted connections (SBCs) have been developed and used as an axial friction damper in braced frames since 1980s. To employ the benefits of SBCs in moment resisting frames (MRFs), rotational slotted bolted connections have been developed more recently with limited application in members that flexural behavior is dominated to shear. In this paper, shear slotted bolted connection (SSBC) is introduced as a new type of friction dampers to employ the benefits of SBCs in lateral load resisting systems with predominant shear behavior members that dissipate energy by traditional yielding mechanisms. The SSBC is a modified bolted connection that dissipates energy through friction in which friction is activated by shear force. The applications of the proposed system as a shear link in link beams of eccentrically braced frames (EBFs), in the beams of MRFs, and coupling beams of coupled concrete shear walls are introduced. To show the efficiency of SSBC, an existing EBF with tubular link beam is equipped with SSBC, and its behavior is studied via models created in general purpose finite element program ABAQUS (SIMULIA, The Dassault Systèmes, Realistic Simulation, RI, USA) verified thoroughly against relevant test results. Also, three MRFs with different beam lengths are modified using SSBC, and their monotonic and cyclic behavior are investigated using validated finite element models. The results show that, as expected, SSBC is capable of working as a mechanical shear fuse dissipating energy effectively in both MRFs and EBFs without any material yielding.