本文關(guān)鍵詞： 地震危險(xiǎn)性 地震區(qū)帶 潛在震源區(qū) 地震區(qū)劃 結(jié)構(gòu)物地震危險(xiǎn)性　出處：《地震工程與工程振動(dòng)》2017年02期 　論文類(lèi)型：期刊論文

【摘要】：本文劃分了西寶高速公路研究區(qū)域地震區(qū)帶和潛在震源區(qū),采用歷史地震資料計(jì)算了地震活動(dòng)性參數(shù),在PGA衰減關(guān)系、地震危險(xiǎn)性概率計(jì)算方法和場(chǎng)地地震動(dòng)影響分析的基礎(chǔ)上,計(jì)算了西寶高速公路未來(lái)50年超越概率2%、10%和63%的PGA分布,基于Arc GIS繪制了西寶高速公路地震危險(xiǎn)性分區(qū)圖;從設(shè)計(jì)地震危險(xiǎn)性和實(shí)際地震危險(xiǎn)性2方面總結(jié)了公路結(jié)構(gòu)物地震危險(xiǎn)性評(píng)價(jià)方法,開(kāi)展了漆水河大橋、千河大橋、灃河大橋和渭河大橋等典型結(jié)構(gòu)物的地震危險(xiǎn)性評(píng)價(jià)。研究結(jié)果表明:西寶高速公路PGA跨越Ⅶ度和Ⅷ度基本烈度區(qū),評(píng)價(jià)結(jié)果略高于我國(guó)第四代地震區(qū)劃圖,這是與渭河斷陷盆地地震活躍的現(xiàn)實(shí)一致的;漆水河大橋和千河大橋的地震危險(xiǎn)性是可控的,灃河大橋和渭河大橋的地震危險(xiǎn)性不可控,應(yīng)采取工程措施進(jìn)行抗震加固。
[Abstract]:In this paper, the seismic zones and potential focal areas of Xibao Expressway are divided. The seismicity parameters are calculated by using historical seismic data, and the attenuation relationship in PGA is obtained. Based on the calculation method of seismic hazard probability and the analysis of site ground motion effect, the PGA distribution of 10% and 63% over the next 50 years for Xibao Expressway is calculated, and the seismic hazard zoning map of Xibao Expressway is drawn based on Arc GIS. In this paper, the evaluation methods of seismic risk of highway structures are summarized from the aspects of design seismic risk and actual seismic risk, and the Qishui River Bridge and Qianhe Bridge are carried out. The seismic risk assessment of typical structures such as Qianhe Bridge and Weihe Bridge. The results show that the basic intensity of PGA crossing 鈪，

本文編號(hào)：1512709