本文選題：橋梁 + 地表破裂　； 參考：《地震工程學(xué)報(bào)》2017年05期

【摘要】：從斷層時(shí)間尺度、活動(dòng)性、場(chǎng)地效應(yīng)等方面闡述跨斷層橋梁的定義與內(nèi)涵;從"功能性"、"制約性"、"地表破裂變異性"、"設(shè)計(jì)缺陷"4方面分析跨斷層橋梁"不得不"面臨較大的地震破壞風(fēng)險(xiǎn)的原因;最后以1979年Imperial Valley地震中El Centro臺(tái)陣收集到的強(qiáng)震記錄為基礎(chǔ),對(duì)斷層破裂強(qiáng)震記錄特征及地震動(dòng)傳播機(jī)理進(jìn)行分析,研究斷層兩側(cè)地面運(yùn)動(dòng)分布規(guī)律,建議跨走滑斷層橋梁的地震動(dòng)輸入方向。本文研究結(jié)果對(duì)促進(jìn)跨斷層橋梁抗震設(shè)防具有借鑒意義。
[Abstract]:From fault time scale, activity, site effect and other aspects of cross-fault bridge definition and connotation; From the four aspects of "function", "constraint", "surface rupture variability" and "design defect", the paper analyzes the reasons why the cross-fault bridge "has to face the larger risk of earthquake damage;" Finally, based on the strong earthquake records collected by El Centro array during the Imperial Valley earthquake of 1979, the characteristics of strong earthquake records of fault rupture and the mechanism of ground motion propagation are analyzed, and the distribution of ground motion on both sides of the fault is studied. The input direction of ground motion across strike-slip fault bridge is suggested. The results of this paper can be used for reference to promote seismic fortification of cross-fault bridges.
【作者單位】： 寧夏大學(xué)土木與水利工程學(xué)院;交通運(yùn)輸部公路科學(xué)研究院;
【基金】：寧夏自然科學(xué)基金項(xiàng)目(NZ16006) 寧夏大學(xué)高水平人才科研啟動(dòng)基金(BQD2015005)
【分類號(hào)】：U442.55

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