›› 2004, Vol. 25 ›› Issue (11): 1828-1831.

• 基础理论与实验研究 • 上一篇    下一篇

湖北巴东长江公路大桥斜坡稳定性研究

刘佑荣,贾洪彪,唐辉明,周丽珍   

  1. 中国地质大学 工程学院,湖北 武汉 430074
  • 收稿日期:2003-08-28 出版日期:2004-11-10 发布日期:2014-07-25
  • 作者简介:刘佑荣,男,1955年生,副教授,湖北省岩石力学与工程学会理事,主要从事工程地质及岩体力学教学科研工作

Study on stability of slope at Badong Yangtse Highway Bridge site

LIU You-rong, JIA Hong-biao, TANG Hui-ming, ZHOU Li-zhen   

  1. Engineering Faculty, China University of Geosciences, Wuhan 430074, China
  • Received:2003-08-28 Online:2004-11-10 Published:2014-07-25

摘要: 巴东长江大桥是连接209国道和巴东县长江两岸新城区的特大型公路大桥,为一简支梁斜拉桥,长900.5 m,主桥跨度388 m,桥塔高218 m,桥荷重大,安全等级高。桥位区地处长江三峡地质条件最复杂的地区,地形陡峻,河谷切割强烈,褶皱断裂密集,岩体破碎、力学性质差,滑坡、泥石流极为发育,其斜坡稳定性直接关系到大桥的安全。在分析论述桥位区斜坡工程地质条件的基础上,采用非线性弹塑性有限元及块体极限平衡理论模拟了斜坡稳定性,预测了三峡水库蓄水及大桥建成后斜坡稳定性的发展趋势。研究表明:桥荷载、库水位波动和地震是影响斜坡稳定性的诱发因素。水库蓄水及大桥建成后桥位区两岸斜坡稳定性明显变差,有沿T2b3/T2b2岩层交界面失稳的可能,必须加以处理。在分析了斜坡变形破坏对大桥的影响后,提出了处理措施的建议。

关键词: 巴东长江公路大桥, 斜坡稳定性, 桥位, 处理措施

Abstract: The Badong Yangtse Bridge is a large highway bridge across the Yangtse River, connecting the No.209 national highway to the new town of Badong County. The bridge is a kind of simply supported cable stayed bridge of 900.5 m length, of which the 388 m main span has two towers of 218 m high. The bridge’s weight is huge and the safety requirement is high, The bridge lies in the middle part of the Three Gorges where the geological condition is the most complex area. There are cliffy landform, sharply incised valley, complicated geo-structure, heavily cracked rock mass, frequent landslide and common debris flows. The slope stability has directly effect on the safety of bridge. On the basis of investigating the bridge site’s geotechnical condition, the stability of slope was simulated by nonlinear elastoplastic finite element method and block limit equilibrium principle. At the same time, the developing trend of the slope’s stability was predicted while the reservoir storing and the bridge building up. The researches show that the bridge’s weight, fluctuating water lever and earthquake are induced factors of slope’s failure. The stability of the slope is sharply decreased after the reservoir storing and the bridge building up. The slope may slide along the interface between T2b3 and T2b2. Some control measures must be taken. In this paper the effect of slope failure on the bridge was analyzed. Finally, some suggestions about existed problems are proposed.

Key words: Badong Yangtse Highway Bridge, slope stability, bridge site, control measures

中图分类号: 

  • TU 448.11
[1] 李 伟,许 强,吴礼舟,李斯琦, . 平推式滑坡中底滑面承压水渗流形式对其稳定性的影响[J]. , 2018, 39(4): 1401-1410.
[2] 涂国祥,黄润秋. 降雨对路堤斜坡稳定性影响的时间效应[J]. , 2015, 36(S1): 523-530.
[3] 陈国兴 ,顾小锋 ,常向东 ,李小军 ,周国良,. 1989~2011期间8次强地震中抗液化地基处理成功案例的回顾与启示[J]. , 2015, 36(4): 1102-1118.
[4] 李建军 ,邵生俊 ,王 超. 岩质断层地基及其治理措施分析[J]. , 2009, 30(S2): 344-348.
[5] 王启国,杜胜华,潘 坤,马力刚,占艳平. 汉江孤山水电站库首罗行滩滑坡稳定性分析及处理对策[J]. , 2009, 30(S2): 461-464.
[6] 范 雷,唐辉明,胡 斌,倪 俊. 二元函数逼近在斜坡可靠度分析中的应用研究[J]. , 2008, 29(3): 624-628.
[7] 周小文 . 穿黄工程北岸砂基抗液化处理措施研究[J]. , 2006, 27(S2): 714-718.
[8] 张宜虎,尹红梅,简文星. 剩余推力法及其在斜坡稳定性评价中的应用[J]. , 2004, 25(4): 628-631.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
[1] 张广明,刘 合,张 劲,吴恒安,王秀喜. 储层流固耦合的数学模型和非线性有限元方程[J]. , 2010, 31(5): 1657 -1662 .
[2] 梅国雄,卢廷浩,陈 浩,李 治. 考虑初始应力的坑侧土体真三轴试验研究[J]. , 2010, 31(7): 2079 -2082 .
[3] 林 杭,曹 平,李江腾,江学良,何忠明. 基于Hoek-Brown准则的三维边坡变形稳定性分析[J]. , 2010, 31(11): 3656 -3660 .
[4] 冉 龙,胡 琦. 粉砂地基深基坑渗透破坏研究[J]. , 2009, 30(1): 241 -245 .
[5] 李俊才,纪广强,宋桂华,张 琼,王志亮,严小敏. 高层建筑疏桩筏板基础现场实测与分析[J]. , 2009, 30(4): 1018 -1022 .
[6] 王可良,刘 玲,隋同波,徐运海, 胡廷正. 坝体岩基-橡胶粉改性混凝土现场抗剪(断)试验研究[J]. , 2011, 32(3): 753 -756 .
[7] 吴 剑,冯少孔,李宏阶. 钻孔成像中结构面自动判读技术研究[J]. , 2011, 32(3): 951 -957 .
[8] 金旭浩 ,卢文波 ,田 勇 ,严 鹏 ,陈 明. 岩石爆破过程S波的产生机制分析[J]. , 2011, 32(S2): 228 -232 .
[9] 李建军,邵生俊,杨扶银,杨春鸣. 防渗墙粗粒土槽孔泥皮的抗渗性试验研究[J]. , 2012, 33(4): 1087 -1093 .
[10] 李 辉 ,晏鄂川 ,杨建国 ,吕 坤 . 库水条件下滑坡体与挡墙相互作用研究[J]. , 2012, 33(5): 1593 -1600 .