斜向波浪对斜坡堤胸墙作用力的试验研究
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摘要
斜坡堤胸墙的稳定性主要受到波浪作用的影响,而且实际工程中斜坡堤多受斜向波浪作用。通过斜向与正向不规则波对斜坡堤胸墙作用的物理模型试验研究,分析斜坡堤单个胸墙所受的斜向波浪总力的折减系数随水位和波浪入射角度的变化规律,并与斜向波浪对单元直立堤的作用情况进行对比。结果表明:斜坡堤单个胸墙所受的斜向波浪总力的折减系数总体上随着水位的降低而变小,随着波浪入射角度的减小而变小;斜向波浪总浮托力的折减系数一般小于总水平力的折减系数;在不同水位和波浪入射角下,斜坡堤单个胸墙所受的斜向波浪总力的折减系数与单元直立堤有一定差别。
The stability of the rubble-mound breakwater crown wall mostly depends on wave loads,and in the seas the breakwater is mostly under the oblique wave action. In this paper,we analyze the effect of the water level and incident wave direction on the reduction factor of the total oblique wave force of one rubble-mound breakwater crown wall,and compare with the vertical breakwater according to the oblique and direct irregular wave model test. The results show that the reduction factor of the total oblique wave force of one rubble-mound breakwater crown wall decreases with the water level or the incident wave direction decreasing. In most cases,the reduction factor of the total uplift oblique wave force is smaller than the horizontal one. The difference between the reduction factors of the total oblique wave force of the rubble-mound breakwater crown wall and the vertical breakwater varies with different water levels or incident wave directions.
The stability of the rubble-mound breakwater crown wall mostly depends on wave loads,and in the seas the breakwater is mostly under the oblique wave action. In this paper,we analyze the effect of the water level and incident wave direction on the reduction factor of the total oblique wave force of one rubble-mound breakwater crown wall,and compare with the vertical breakwater according to the oblique and direct irregular wave model test. The results show that the reduction factor of the total oblique wave force of one rubble-mound breakwater crown wall decreases with the water level or the incident wave direction decreasing. In most cases,the reduction factor of the total uplift oblique wave force is smaller than the horizontal one. The difference between the reduction factors of the total oblique wave force of the rubble-mound breakwater crown wall and the vertical breakwater varies with different water levels or incident wave directions.
引文
[1]中交第一航务工程勘察设计院有限公司.港口与航道水文规范:JTS 145—2015[S].北京:人民交通出版社股份有限公司,2015.
[2]合田良实.港工建筑物的防浪设计[M].北京:海洋出版社,1984.
[3]李玉成,孙昭晨,董国海,等.斜向不规则波对直墙作用的实验研究[J].海洋工程,2002,20(1):57-63.
[4]李玉成,董国海,孙昭晨,等.斜向规则波与直墙相互作用的实验研究[J].中国海洋平台,2001,16(4):1-6.
[5]MADRIGAL B G.Loads on caisson breakwaters in multidirectional random non-breaking seas[C]ASCE.Proceeding of 5th International Conference on Coastal and Port Engineer in Developing Countries.South Africa:[s.n.],1999:1314-1326.
[6]李本霞,俞聿修,张宁川.斜向随机波对直立堤作用的试验研究[J].水利水运工程学报,2003(2):1-6.
[7]俞聿修,胡金鹏,李本霞,等.斜向波作用于直立堤上的单位堤长波浪力[J].港工技术,2003(2):6-8.
[8]俞聿修,李本霞,张宁川,等.斜向和多向不规则波作用于直墙堤上的波浪荷载[J].水运工程,2008(4):1-4.
[9]BATTJES J A.Effects of short-crestedness on wave loads on long structures[J].Applied ocean research,1982,4(3):165-172.
[2]合田良实.港工建筑物的防浪设计[M].北京:海洋出版社,1984.
[3]李玉成,孙昭晨,董国海,等.斜向不规则波对直墙作用的实验研究[J].海洋工程,2002,20(1):57-63.
[4]李玉成,董国海,孙昭晨,等.斜向规则波与直墙相互作用的实验研究[J].中国海洋平台,2001,16(4):1-6.
[5]MADRIGAL B G.Loads on caisson breakwaters in multidirectional random non-breaking seas[C]ASCE.Proceeding of 5th International Conference on Coastal and Port Engineer in Developing Countries.South Africa:[s.n.],1999:1314-1326.
[6]李本霞,俞聿修,张宁川.斜向随机波对直立堤作用的试验研究[J].水利水运工程学报,2003(2):1-6.
[7]俞聿修,胡金鹏,李本霞,等.斜向波作用于直立堤上的单位堤长波浪力[J].港工技术,2003(2):6-8.
[8]俞聿修,李本霞,张宁川,等.斜向和多向不规则波作用于直墙堤上的波浪荷载[J].水运工程,2008(4):1-4.
[9]BATTJES J A.Effects of short-crestedness on wave loads on long structures[J].Applied ocean research,1982,4(3):165-172.