本文選題：鄭家灣滑坡　切入點(diǎn)：上跨橋梁　出處：《工程地質(zhì)學(xué)報(bào)》2017年02期 　論文類型：期刊論文

【摘要】：當(dāng)前滑坡蠕變對(duì)上跨橋梁影響研究甚少,實(shí)測(cè)數(shù)據(jù)更為匱乏。在對(duì)鄭家灣滑坡體及上跨橋梁進(jìn)行長(zhǎng)期監(jiān)測(cè)的基礎(chǔ)上,根據(jù)深部位移監(jiān)測(cè)數(shù)據(jù)推斷出滑坡潛在滑面位置,分析了氣象因素對(duì)滑坡及橋梁變形的影響,進(jìn)而研究了滑坡蠕變與橋梁變形的相關(guān)性。研究表明:(1)鄭家灣滑坡深約3~19m,月位移0.64~5.16mm,累積位移20~62mm,處于間歇性蠕滑狀態(tài)。(2)降雨控制著鄭家灣滑坡蠕變與橋梁變形,監(jiān)測(cè)期間月最大降雨量390.2mm,此時(shí)滑坡與橋梁變形幅度最大,分別為2mm·月~(-1)和7mm·月~(-1)。(3)橋梁變形與滑坡蠕變具有同步性,兩者月位移相差0.24~2.13mm,累積位移相差6.3mm。本文數(shù)據(jù)和結(jié)論對(duì)鄭家灣滑坡治理及今后類似上跨橋梁滑坡的分析具有很好的借鑒意義。
[Abstract]:At present, there is little research on the influence of landslide creep on the upper span bridge, and the measured data are more scarce. Based on the long-term monitoring of the Zhengjiawan landslide and the upper span bridge, the location of the landslide potential slide surface is inferred from the monitoring data of the deep displacement. The influence of meteorological factors on landslide and bridge deformation is analyzed. Furthermore, the correlation between landslide creep and bridge deformation is studied. The results show that the depth of Zhengjiawan landslide is about 319m, the monthly displacement is 0.6455.16mm, and the cumulative displacement is 2062mm. The creep and bridge deformation of Zhengjiawan landslide are controlled by rainfall. During the monitoring period, the maximum monthly rainfall was 390.2mm, and the amplitude of landslide and bridge deformation was the largest, which were 2mm 路yue ~ (-1) and 7mm 路yue ~ (-1) and 7mm 路month ~ (-1) respectively) the deformation of bridge and the creep of landslide had synchronism. The difference between the monthly displacement and the cumulative displacement is 0.24 ~ 2.13 mm and 6.3 mm respectively. The data and conclusions in this paper can be used for reference for the treatment of Zhengjiawan landslide and the analysis of similar bridge landslide in the future.
【作者單位】： 長(zhǎng)安大學(xué)公路學(xué)院;中國(guó)市政工程華北設(shè)計(jì)研究院;楊凌職業(yè)技術(shù)學(xué)院;長(zhǎng)安大學(xué)地測(cè)學(xué)院;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41272285) 長(zhǎng)安大學(xué)中央高�；究蒲谢�(2013G2211003,2014G2260009)資助
【分類號(hào)】：U442.2;P642.22
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本文編號(hào)：1588408