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2012年 第6卷 第4期

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《结构与土木工程前沿（英文）》 >> 2012年 第6卷 第4期 doi: 10.1007/s11709-012-0176-4

Temperature effects of shape memory alloys (SMAs) in damage control design of steel portal frames

1. Department of Building Engineering, Tongji University, Shanghai 200092, China; 2. Department of Civil Engineering, Meijo University, Nagoya 468-8502, Japan

发布日期： 2012-12-05
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The objective of the present study is to analytically investigate temperature effects of an axial-type seismic damper made of shape memory alloys (SMAs) equipped in steel frames. Based on a modified multilinear one dimensional constitutive model of SMAs, two types of SMAs are employed, which have different stress plateau and different stress growth rate with temperature increase. Temperature effects of SMA dampers on seismic performance upgrading are discussed in three aspects: different environment temperatures; rapid loading rate induced heat generation and different SMA fractions. The analysis indicates that the effect of environment temperature should be considered for the SMA damper in steel frames. However, the rapid loading rate induced heat generation has little adverse effect.

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