發(fā)布時間：2018-05-12 22:45

  本文選題：可恢復性 + 地震損傷��； 參考：《工程力學》2017年05期

【摘要】：在定義結(jié)構(gòu)剩余抗震能力比、結(jié)構(gòu)整體抗震可恢復性指標以及對應于建議損傷區(qū)間的局部抗震可恢復性指標的基礎(chǔ)上,考慮建筑物不同重要性和不同破壞影響,建議了不同的結(jié)構(gòu)抗震可恢復性等級和相應的整體可恢復性指標變化范圍,以及局部抗震可恢復性指標的下限值。結(jié)合易損性分析得到特定地震強度下得到其剩余抗震能力比的期望值。根據(jù)損傷區(qū)間規(guī)劃、損傷性能目標以及各可恢復性等級結(jié)構(gòu)剩余抗震能力比曲線下包絡線,建議了結(jié)構(gòu)抗震可恢復性概念設計框架。這種概念設計框架是在描述結(jié)構(gòu)損傷程度的基礎(chǔ)上,能夠更加直接地評估結(jié)構(gòu)面臨受損或序列型強震時其剩余強度儲備的情況。針對算例情況而言,按照現(xiàn)行規(guī)范設計的結(jié)構(gòu)其抗震可恢復性和倒塌概率均滿足要求,大震作用下結(jié)構(gòu)剩余抗震能力比的期望值與最大結(jié)構(gòu)層間位移有較好的對應關(guān)系,說明結(jié)構(gòu)抗震可恢復性評估方法與常規(guī)設計方法之間的關(guān)聯(lián)。
[Abstract]:On the basis of defining the residual seismic capacity ratio of the structure, the seismic recoverability index of the whole structure and the local seismic recoverability index corresponding to the suggested damage zone, the different importance and failure effect of the building are considered. It is suggested that different seismic recoverability grades of structures and the corresponding range of overall recoverable indexes, as well as the lower limit values of local seismic recoverability indexes. Based on the vulnerability analysis, the expected value of the residual seismic capacity ratio is obtained under the specific earthquake intensity. According to the damage interval planning, damage performance targets and the envelope under the curve of the residual seismic capacity ratio of each recoverable structure, the conceptual design framework of seismic resilience of structures is proposed. On the basis of describing the degree of structural damage, this conceptual design framework can more directly evaluate the residual strength reserve of the structure in the presence of damage or sequential strong earthquakes. For example, the seismic recovery and collapse probability of the structure designed according to the current code meet the requirements, and the expected value of the residual seismic capacity ratio of the structure under the action of a large earthquake has a good corresponding relationship with the maximum interstory displacement of the structure. The relationship between seismic restorability assessment method and conventional design method is explained.
【作者單位】： 大連理工大學土木工程學院;
【基金】：國家自然科學基金項目(91315301,51261120376)
【分類號】：TU352.11

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本文編號：1880478