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杨兵兵,孙树林,吴孙星,张岩,高诗钦.临河岩质边坡地震抗倾覆稳定性拟动力分析[J].河北工程大学自然版,2021,38(4):34-43
临河岩质边坡地震抗倾覆稳定性拟动力分析
Pseudo-dynamic Analysis of Stability Against Earthquake Overturning of Rock Slope Along Rivers
投稿时间:2021-07-26  
DOI:10.3969/j.issn.1673-9469.2021.04.006
中文关键词:  临河岩石边坡  倾覆稳定  拟动力法  水压分布  地震稳定
英文关键词:rock slope along river  overturning stability  pseudo-dynamic method  water pressure distribution  seismic stability
基金项目:国家自然科学基金资助项目(41674113);中央党校科研业务费专项资金资助项目(2109B42214)
作者单位
杨兵兵 河海大学 地球科学与工程学院, 江苏 南京 210098 
孙树林 河海大学 地球科学与工程学院, 江苏 南京 210098 
吴孙星 建华建材(中国)有限公司, 江苏 镇江 212413 
张岩 河海大学 土木与交通学院, 南京 210098 
高诗钦 河海大学 地球科学与工程学院, 江苏 南京 210098 
摘要点击次数: 50
全文下载次数: 12
中文摘要:
      基于拟动力法推导出不同工况条件下临河岩质边坡地震抗倾覆稳定安全系数计算公式。通过参数分析,研究不同岩体放大系数下,水平和垂直地震力、张裂缝积水深度、边坡超载、锚固效应、流水淘蚀等对岩质边坡地震抗倾覆稳定性的影响,研究表明,不同工况下,张裂缝积水深度、水平地震力、流水淘蚀不利于岩质边坡地震抗倾覆稳定,但竖向地震力、锚固力、锚固高度、坡顶超载等有利于岩质边坡地震抗倾覆稳定;随着岩体放大系数的增加,水平地震力、竖向地震力对岩质边坡抗倾覆稳定性的影响增大,坡顶超载、张裂缝积水深度、锚固应力、锚固高度、临河水位对岩质边坡抗倾覆稳定性的影响减小,而锚固倾角、坡脚淘蚀高度对边坡抗倾覆稳定性的影响基本不变。
英文摘要:
      The stability evaluation of rock slopes in earthquake-prone areas is of great significance. Based on the pseudo-dynamic method, the calculation formulas of the stability safety factor of the rock slopes along river under different conditions was derived. Through parameter analysis, the impact of the seismic resistance of rock slopes such as horizontal and vertical seismic force, depth of cracking and fissure water, slope overload, anchoring effect, and flowing water erosion on the stability of rock slopes against overturning under different rock mass magnification factors was studied. Studies have shown that under different working conditions, the crack water accumulation, the horizontal seismic force, and the erosion of flowing water are not conducive to the stability of the rock slope against earthquake overturning, but the vertical seismic force, anchorage force, anchorage height, slope top overload, etc. are conducive to the seismic stability of rock slopes against overturning; with the increase of the rock mass amplification factor, the influence of horizontal and vertical seismic forces on the stability of rock slopes against overturning increases, slope crest overload, water depth of tension cracks, anchoring stress, anchoring height, and river water level have less influence on the anti-overturning stability of rock slopes, while the anchoring inclination angle and the height of scouring at the foot of the slope have less influence on the anti-overturning stability of the slope.
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