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首页> 外文期刊>Bulletin of earthquake engineering >Evaluation of benefits at a regional scale of new strategies to improve the seismic performance of low-rise residential construction
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Evaluation of benefits at a regional scale of new strategies to improve the seismic performance of low-rise residential construction

机译：评估在区域规模的新战略中的益处，以提高低层住宅建筑地震绩效

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摘要

Light-frame low-rise wood dwellings have typically had adequate levels of safety in terms of collapse prevention. Nevertheless, damage to this type of construction due to earthquakes has resulted in large economic losses and thousands of displaced families. This paper evaluates the benefits, on a regional scale, of using a recently developed design and construction method referred to as unibody. This cost-effective method increases the lateral strength and, particularly, the lateral stiffness of walls of wood-frame houses, leading to significant reductions in lateral displacement demands. For houses at a given distance from the seismic source, reduced displacement demands translate into much smaller probabilities of damage. Consequently, for a region affected by a seismic event, this translates into a much smaller area of damaged houses. It is found that, for short-period structures, increasing the lateral stiffness is more efficient than increasing the lateral strength. Thus, when using unibody construction, which greatly increases the lateral stiffness of wood-frame houses, the number of damaged residential units is greatly reduced. It is shown that these relationships are strongly nonlinear and are positively combined resulting in a substantial reduction of seismic risk on a regional scale.
机译：在防塌预防方面，光框低层木屋通常具有足够的安全水平。然而，由于地震因地震而造成这种建筑的损害导致了大量的经济损失和成千上万的流离失所的家庭。本文评估了利用最近开发的设计和施工方法的区域规模的益处。这种经济高效的方法增加了横向强度，特别是木材框架房屋壁的横向刚度，从而显着降低了横向位移需求。对于距离地震源的给定距离的房屋，减少的位移需求转化为更小的损坏概率。因此，对于受地震事件影响的区域，这转化为较小的损坏房屋区域。结果发现，对于短周期结构，增加横向刚度比增加横向强度更有效。因此，当使用Unibody结构时，大大增加木框架房屋的横向刚度，损坏的住宅单元的数量大大降低。结果表明，这些关系是强烈的非线性的，并且正相结合，导致区域规模的地震风险显着降低。

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