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高层住宅厨房集中排烟若干问题的分析与对策 总被引:1,自引:0,他引:1
介绍了家庭厨房的合适通风量及高层住宅常见烟道型式与主要排烟机理,分析了高层住宅烟道串烟串味、抽油烟机经常抽不出烟或厨房排烟效果不佳等因素,并提出了相应的解决对策。 相似文献
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David T. Butry Robert E. Chapman Allison L. Huang Douglas S. Thomas 《Fire Technology》2012,48(2):155-172
Recent changes in the International Building Code (IBC) require a third exit stair for buildings in excess of 420 ft (128 m)
high. Additionally, the new code provision allows for occupant evacuation elevators (OEE) to be used as an alternative to
the third stair, provided the passenger elevator be protected in such a way to facilitate safe building evacuation. In this
study, we evaluate the life-cycle costs of these alternative means of egress, using two prototypical building designs. Building
‘42F’ is a 42 floor, 504 ft (154 m) high building with a total floorspace of 1.68 million ft2 (0.16 million m2). Building ‘75F’ is a 75 floor, 900 ft (274 m) high building with a total floorspace of 3.38 million ft2 (0.31 million m2), including an 8403 ft2 (781 m2) sky lobby. The life-cycle cost of the OEE is compared to two exit stair designs, differentiated by width: 44 in. (112 cm)
and 66 in. (168 cm). The wider exit stair conforms with another change to the IBC that requires the increase in width of exit
stairs by 50% in new sprinklered buildings. The results of the economic analysis demonstrate that: (1) an additional exit
stair is a cost-effective alternative to the installation of OEE on a first-cost basis; and (2) OEE are a cost-effective alternative
to the installation of an additional exit stair on a life-cycle cost basis when rental rates are moderate to high and when
discount rates are moderate to low. 相似文献
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由迅达公司制造的第一部高速电梯具有乘坐舒适,设计变化范围大和节省空间的技术特色,使得它们适用于在全球范围使用。迅达公司作为一个电梯和自动扶梯专业生产厂家,伴随着其自身的新发展,它完全能够抓住高速电梯市场的灵活多变及制作精良的发展趋势。迅达700是一个由标准组件构成的电梯系统。 相似文献
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结合实际工程,就某高层建筑进行了优化设计,通过软件计算和经济性论证,对框架-筒体结构和剪力墙结构这两种体系进行比较分析,最后确定采用框架-筒体结构体系进行结构设计。 相似文献
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文章结合实际工程,对高层建筑钢管混凝土叠合柱框架-剪力墙体系框架柱设计2种方案进行深入的比较分析研究。第1种方案采用钢管混凝土叠合柱,框架柱截面积缩小了50%,增加了使用面积,混凝土节约10%左右且施工简单,结构整体刚度满足设计要求;第2种方案采用钢筋混凝土柱,柱截面较大,影响了建筑使用面积且用钢量较多,但对结构整体刚度贡献有所提高。通过研究,采用第1种方案,使工程经济造价合理且结构抗震性能达到较高水平。 相似文献
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利用所建立的高层建筑电梯疏散交通模型。编制了疏散仿真程序系统,并比较了电梯疏散实例结果与模拟仿真结果,研究了高层建筑及电梯配置系统的主要参数对电梯疏散过程的影响。 相似文献
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近年来,随着高层建筑在城市中的不断增多,带来了很多潜在的消防安全问题,尤其是对人员进行有效疏散的问题。本文对建筑的消防安全疏散问题进行了分析,提出了有效的应对方法。 相似文献
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近年来,随着高层建筑在城市中的不断增多,带来了很多潜在的消防安全问题,尤其是对人员进行有效疏散的问题。本文对建筑的消防安全疏散问题进行了分析,提出了有效的应对方法。 相似文献
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介绍了杂填土地质条件下的高层建筑,根据不同荷载及地基土特征,采用合理的施工工艺,取得了较好效果的工程实例。 相似文献
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Two experiments were conducted to assess the effectiveness of photoluminescent material (PLM) in support of occupant evacuation
in office buildings. The first study completed in 1999 was designed to assess the potential use of PLM as a safety communication
system to support office occupant evacuation. The study measured the occupant premovement time, movement time and evacuation
speed in four stairways with different lighting and PLM installations. The positive outcome of the first study regarding a
comparable speed of movement in the different stairways used and the conclusive feedback from the evacuees regarding the PLM
wayguidance system led to a second study. The second study, completed in 2008, compared 3 stairway installations of PLM markings
and a stairway with emergency lighting, which acted as a reference stairway. Results show comparable speed of movement under
severe crowd conditions for the 4 stairways studied. Overall, two-thirds of the respondents felt comfortable going down the
stairways with PLM markings particularly in the 2 stairways where the marking was installed across each step. The stairway,
which had only emergency lighting, and the stairway with L-shaped markers at the edge of each step were less appreciated by
the occupants. Occupants commented that the landings and mid-landings were difficult to identify in all the stairways, which
suggest that additional marking should be provided in these areas. The findings of these two studies led to the development
of a best practice Guide for installation of PLM marking in exit stairways. 相似文献
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超高层建筑结构体系的新发展 总被引:3,自引:0,他引:3
本文首先介绍了世界上超高层建筑结构体系目前的发展形势;接着介绍国内外正在建设或计划建设的数个超高层建筑工程实例,简要分析了各工程的建筑特点、结构体系和受力性能,通过这些实例来说明支撑框筒结构体系、多重组合巨型结构体系、成束筒结构体系、扶壁式筒体、扇形支撑结构体系等新型结构体系在超高层建筑工程中的应用和各自独有的优势;最后简要介绍了韩国的超高层发展计划和规划在上海建设的仿生大厦,展望了超高层建筑结构体系未来的发展。 相似文献
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本文对高层建筑地震反应进行优化阻尼器控制研究。文中首先简述了阻尼器控制的原理,提出了便于实际应用的阻尼筒控制系统。由于阻尼控制器的显著阻尼水平,使得建筑具有非经典阻尼分布,因而采用复模态方法进行模态分析,研究了阻尼控制器的参数及其在建筑上的安装位置对建筑复模态的影响。在地震反应分析中,提出了子空间复模态时程分析方法,有效地改善了复模态方法在非经典阻尼结构地震反应分析中的应用。对阻尼器的阻尼参数进行了优化分析,并对一个8层建筑的地震反应施加阻尼器控制,结果表明,优化阻尼器控制显著地降低了建筑的地震反应。 相似文献
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现阶段,随着城市化进程的深入发展,高层建筑的发展速度越来越快,且数量越来越多。但同时因高层建筑的不合理布局引发的一系列城市问题,逐渐引起人们的高度关注。论文在全面阐述我国现阶段高层建筑布局现状的基础上,以大中城市为例,对大中城市中高层建筑布局存在的问题及影响因素进行分析,并提出了相应的规划对策,以期在理论和实践上为提升我国高层建筑合理化布局,推动城市化发展提供借鉴和参考价值。 相似文献
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