【摘要】：根據(jù)邊坡施工后坡體位移的相對變化趨勢,給出了邊坡開挖松弛區(qū)和預壓區(qū)的明確定義,將開挖松弛區(qū)和預壓區(qū)統(tǒng)稱為坡體影響區(qū),并通過大型模型試驗模擬了多級邊坡的施工過程,提出了影響區(qū)重疊效應的概念。若下級邊坡的開挖松弛區(qū)(或預壓區(qū))與上級邊坡的預壓區(qū)發(fā)生重疊,那么會對上級邊坡重疊區(qū)域的巖土體產(chǎn)生松弛(或加固)作用,從而影響該重疊區(qū)域支擋結(jié)構(gòu)的受力情況,重疊范圍越大影響越大;對于重疊區(qū)范圍之外的支擋結(jié)構(gòu),其受力不受影響,影響區(qū)重疊效應是支擋結(jié)構(gòu)受力發(fā)生變化的根本原因。
[Abstract]:According to the relative variation trend of slope body displacement after slope construction, a clear definition of slope excavation relaxation area and pre-compression area is given, and the excavation relaxation area and pre-pressure area are collectively called slope body influence area. The construction process of multi-stage slope is simulated by large-scale model test, and the concept of overlapping effect of influence zone is put forward. If the excavation relaxation area (or preloading area) of the lower slope overlaps with the preloading zone of the upper slope, it will relax (or strengthen) the rock and soil mass in the overlapping area of the upper slope. As a result, the stress of the retaining structure in the overlapping area is affected, and the larger the overlap range is, the greater the influence is. For the retaining structure outside the overlapping zone, the force of the retaining structure is not affected, and the overlapping effect of the affected area is the fundamental reason for the change of the retaining structure.
【作者單位】： 后勤工程學院土木工程系;68612部隊;
【基金】：國家自然科學基金項目(No.41072243,No.41272356) 國家科技支撐計劃項目(No.2012BAK05B02)~~
【分類號】：TU753

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