基于振动台试验的滑移隔震-限位混凝土矩形贮液结构减震研究

混凝土矩形贮液结构由于其独特的优势，在土木工程领域具有广泛的应用，但是历次地震中都不乏该类结构的破坏案例，减小其在地震作用下的破坏概率迫在眉睫。为研究滑移隔震在混凝土矩形贮液结构减震方面的有效性，运用振动台缩尺试验对比研究了非隔震、铅芯橡胶隔震、滑移隔震-限位混凝土矩形贮液结构的动力响应，探讨滑移隔震对贮液结构的减震优势，研究限位装置对结构滑移位移的控制效果，并验证基于ALE法数值模型的合理性。结果表明，滑移隔震对结构动力响应和液体晃动波高都具有很好的控制效果，其减震效果明显优于铅芯橡胶隔震，进行合理的限位装置设计能够克服滑移隔震混凝土矩形贮液结构位移超限和震后残余位移较大的缺陷。滑移隔震-限位减震系统能够在震后保持完好，且造价低廉，因此其在混凝土矩形贮液结构减震方面具有非常优越的应用前景。

Study on shock mitigation of concrete rectangular liquid storage structure with sliding shock insulator and limiting devices based on shaking table test

Concrete rectangular liquid storage structures (CRLSSs) have received wide applications in civil engineering because of their unique advantages. However, many destruction cases about this kind of structure have been witnessed in the past earthquakes, indicating that reducing the damage probability of such structures under earthquake is in urgent demand. In order to study effectiveness of sliding shock insulator on seismic response reduction of CRLSSs, dynamic responses of CRLSS without shock insulator, with LRB insulator and with sliding shock insulator and limiting devices were comparatively studied based on reduced-scale shaking table tests, advantages of sliding shock insulator for seismic response reduction of CRLSSs were discussed, and the control effect of limiting devices on sliding displacement of structure was investigated; besides, the rationality of numerical model based on ALE method was verified. The results show that sliding shock insulator has good control effect on dynamic responses of structure and liquid sloshing height, and the seismic response reduction effect of the sliding shock insulator is obviously better than that of LRB insulator; reasonable design of limiting devices can overcome the defects of excessive displacement and large residual displacement of CRLSS with sliding shock insulator under earthquake. Because sliding shock insulator with the system of limiting devices can remain intact after earthquake and its cost is low, a very good application prospect of CRLSSs for seismic response reduction can be anticipated.