中美房屋问答(China vs. USA - Building Issues)



是否有软件设计过结构同时满足了中美法律规范? (Are there any software which has been used and designed a structure that complied with all the law of both China and USA codes?)

没发现。现存的中国抗地震结构几乎都有双向弯曲柱,但现存的美国抗地震结构几乎没有这种柱(目前仅有两种合法双向弯曲柱,AISC 358-16 Chapter 10 & 11)。结构分析软件应验算双向弯曲柱是否满足“强柱弱梁”的抗震基本概念。

(Cannot find. The bi-axial bending columns have been used by almost all built seismic structures in China, but it is very hard to find this kind of column on current structures in USA, because only ConXtech ConXL & SidePlate® Moment Connection adapted by AISC 358-16 Chapter 10 & 11. Structural software have to check the basic seismic concept of STRONG COLUMN WEAK BEAM.)

返回(Return to top list)


中国不规则高层建筑能否在美国建造? (China irregular high rise buildings can be built in the USA?)

不能,如央视大裤衩楼。美国法律中荷载组合(2015 IBC/2016 CBC Section 1605)控制着房屋抗倾覆设计。荷载组合是基于概率论,因此其每条组合结果必须大于零,即概率在[0, 1]之间,否则就是概率中不可能事件。

(No, for example the CCTV new building. The Load Combinations, 2015 IBC/2016 CBC Section 1605, control structural overturning design. The Load Combinations are based on probability. If an equation value of Load Combinations is negative, which means the structure may be inadequate because probability result out-of [0, 1].)

返回(Return to top list)


美国怎样防止发生整体结构从地基土中掘出倒塌? (What is the IBC/CBC section for the entire structure lateral stability?)

美国房屋规范对结构整体稳定有很多要求,一个简单的方法是验算整体结构埋入地基的深度是否满足旗杆要求(2015 IBC/2016 CBC Section 1807.3)。高层群桩基础很难满足这一稳定要求。

(There are many code sections to check building foundation lateral stability. The one of the methods is to check entire structure as pole/post embedded in soil based on 2015 IBC/2016 CBC Section 1807.3, so the group piles may not be adequate as tall building foundation.)

返回(Return to top list)


中美法律中“振型分解反应谱”抗地震分析法的区别是什么? (What is the difference of "Modal Response Spectrum Analysis" between China and USA?)

美国多一个保安全系数(Scale Factor, ASCE 7-16 12.9)。“振型分解反应谱”分析法是概率论方法,概率不可以超出[0 , 1],不然就是“不可能事件”。美国为保证“振型分解反应谱”概率不出[0 , 1],从发明到应用都有这个保安全系数。

(There is a Scale Factor on USA ASCE 7-16 12.9, but China no that. The "Modal Response Spectrum Analysis" is probability method. The probability should be within [0, 1], otherwise impossible event. To make sure within [0 , 1], there is always a Scale Factor in USA building codes.)

返回(Return to top list)



美国木头结构与中国混凝土结构哪个更耐久? (Which one is more durable between USA wood structure and China concrete one?)

决定房屋耐久性的因素很多,但总体而言,美国有地下夹层(California Basement)的木结构独立屋最耐久,现存很多已超过中国古建筑设定年限。但中国混凝土房屋比美国无地下夹层的木结构耐久,其混凝土维护费用也低。

(There are many factors that control the structural durability. In gereral, the USA wood structural house with the California Basement is the most durable, which many of them currently are over the timing limits of China historic building. Then China concrete structure is more durable than USA wood structure without California Basement, and concrete maintenance cost is lower than wood.)

返回(Return to top list)


中国人加州买房会被曝光? (Chinese house purchaser can be found on Internet?)

不一定。买房可以用多种方法: 实名、公司或信托文件。其中实名和公司信息是可以被地产师查到的,但信托文件是不公开的个人隐私文件。

(Not really. There are many methods to purchase house: using purchase's name, LLC or Inc., or Trust Document. The purchase's name and company information can be found by licensed persons, but Trust Document not because privacy.)

返回(Return to top list)