摘要
组合式砌块护岸因其施工便利、性能良好等优点在国内被逐渐推广,但其性能研究及相关设计规范还处于空白阶段。为探究组合工字型护岸抗滑性能与抗倾覆性能,进行了三组不同齿坎长度条件下的抗滑动模型试验和三组不同工况下的护岸抗倾覆模型试验,试验结果表明,在试验齿长范围内,抗滑力与齿长近似呈线性关系。随着齿长增加,极限抗滑力和综合摩擦系数相应增大,齿前被动土压力值较朗肯土压力理论计算值折减系数在0. 7左右。铺设砂浆及锚筋情况下护岸整体性较好,抗倾覆能力较强。
The combined block revetment has been gradually promoted in China due to its convenient construction and good performance,but its performance research and related design specifications are still in a blank stage.In order to explore the anti-sliding performance and anti-overturning performance of the combined I-type revetment,three sets of anti-sliding model tests under different tooth lengths and three sets of revetment anti-overturning model tests under different working conditions were carried out. The test results show that the test In the range of tooth length,the anti-sliding force is approximately linear with the tooth length. As the tooth length increases,the ultimate anti-sliding force and the comprehensive friction coefficient increase correspondingly. The passive earth pressure value before the tooth is lower than the theoretical calculation value of the Rankine earth pressure by about 0. 7. Under the condition of laying mortar and anchorage,the bank protection is better and the anti-overturning ability is higher.
作者
赵子玉
吴跃东
洪艳
ZHAO Zi-yu;WU Yue-dong;HONG Yan(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Geotechnical Research Institute, Hohai University, Nanjing 210098, China)
出处
《科学技术与工程》
北大核心
2019年第12期313-318,共6页
Science Technology and Engineering
关键词
组合工字型护岸
抗滑
抗倾覆
模型试验
combined I-shaped ecological revetment
anti-slip
anti-overturn
model test
