摘要
桩柱是广泛用于桥梁、码头等涉水建筑物的一种结构。滑坡产生的涌浪作用在桩柱的冲击力对整个涉水建筑物的稳定性及安全性有重要影响。通过物理模型试验,研究滑坡涌浪作用下,桩柱所受冲击力的特征。结合相关数据,提出滑坡涌浪作用下桩柱处动水压强极值的计算公式。试验结果表明,体积涌浪传播至桩柱时,对桩柱产生最大动水压强的极值沿桩柱轴向等值分布,与孤立波对桩柱作用力分布规律类似;而后冲击涌浪产生第二极值,其分布随水深而递减,规律与规则波类似。
The pile is a kind of structure widely used in aquatic buildings such as bridge and dock. The impact force on the pile brought by landslide surge is crucial to the stability and safety of the whole aquatic building. On the basis of physical model experiments,characteristics of impact force brought by landslide surge on the pile were studied. Based on relevant data,a formula was worked out for calculating the extreme value of dynamic hydraulic pressure on the pile. The experimental results show that the maximum hydrodynamic pressure emerges when the volume surge spreads to pile,and there is a roughly negative correlation between its extreme value and the depth of the measuring point,which is similar to the solitary wave,and that the impact surge produces the second hydrodynamic pressure,and it decreases with the increase of water depth,which is similar to the regular wave.
出处
《中国安全科学学报》
CAS
CSCD
北大核心
2017年第2期115-120,共6页
China Safety Science Journal
基金
国家自然科学基金资助(51679015)
湖南省自然科学基金资助(2015JJ2006)
湖南省水利科技项目(湘水科计[2015]13-20)
关键词
滑坡涌浪
桩柱
冲击力
动水压强
计算公式
landslide surge
pile
impact force
hydrodynamic pressure
calculating formula
作者简介
白薇（1990-），女，湖南岳阳人，硕士研究生，主要研究方向为波浪、水流与建筑物相互作用。E-mail：463259947@qq．com。
通信作者：程永舟（1974-），男，湖北广水人，博士，教授，主要从事水利工程方面的教学和研究。E-mail：chengyongzhou@163．com。
