摘要
为了探讨砂袋挡土墙宽度是挡土墙设计过程中的关键因素,直接影响挡土墙的整体稳定性,通过砂袋挡土墙在墙宽分别为40、60、80 cm条件下的室内模型试验方法,研究了砂袋挡墙墙后填土沉降规律、墙面水平位移分布和墙背及墙内土压力分布规律。试验结果表明,砂袋挡土墙墙后填土沉降与墙体宽度成正相关;水平位移随墙宽度的增加逐渐减小,所以增加挡土墙宽度可以提高其整体稳定性;土压力随墙高度的增加先增加到最大值而后逐渐减小,成鼓型分布,距离墙背越远,土压力越小,随墙高度变化越不明显;可见砂袋挡土墙宽度对其承载特性具有较大的影响。
In order to explore the width of sandbag retaining wall is the key factor in the design of retaining wall and directly affects the overall stability of retaining wall.Based on the indoor model test method of sand bag retaining wall with wall width of 40,60,80 cm respectively,the law of settlement of backfill behind sand bag retaining wall,the distribution of horizontal displacement of wall surface and the distribution law of earth pressure behind and inside the wall are studied.The results show that the settlement of filled earth and widths of wall have a positive correlation.The horizontal displacement decreased with the increasing of the wall width,So increasing the width of retaining wall can improve its overall stability.With the the increasing of the height of the retaining wall,the earth decreased,becoming a drum type.The farther away from the wall back,the smaller the earth pressure,the more unconspicuous the change with wall height.It is concluded that the width of sand bag retaining wall had great influence on its bearing characteristics.
作者
李伟
耿莹莹
李福栋
张方刚
LI Wei;GENG Ying-ying;LI Fu-dong;ZHANG Fang-gang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《科学技术与工程》
北大核心
2019年第36期279-289,共11页
Science Technology and Engineering
基金
国家自然科学基金(51308355)
辽宁省自然科学基金(20170540735)
中铁十九局集团矿业投资有限公司科研项目(18-08-147)资助
关键词
砂袋挡土墙
挡土墙宽度
沉降
水平位移
土压力
sandbag retaining wall
retaining wall width
settlement
horizontal displacement earth pressure
