摘要
在桥梁基础波浪力计算中,波浪对桥梁基础产生的水平力为主要设计荷载,其很大程度上控制桥梁基础的规模。为了给桥梁基础设计提供依据,确保桥梁结构受力安全、经济合理,选取乐清湾大桥1号桥基础为研究对象,采用大直径结构波浪力计算数学模型,对作用于承台和群桩上的波流力分别进行计算,并对承台波流力进行合成系数分析,提出承台波流力可近似通过波浪力与水流力之和乘以1.04来计算。利用波浪物理模型试验对该计算方法进行研究和论证,建立适用于实际工程的有效数值模型,为工程的安全设计提供重要保证。
In calculation of wave forces of bridge foundation, the horizontal force produced by waves to bridge foundation is main design load, which controls the scale of bridge foundation to a large extent. In order to provide basis for design of bridge foundation and ensure safe, economic and reasonable forces on bridge structures, this paper selects No. 1 bridge foundation of Yueqing Bay Bridge as the object of research, calculates wave-current forces acting on platforms and pile groups, respectively by means of mathematical model for calculation of wave forces in large - diameter structure, analyzes composite coefficient of wave-current forces on platforms, and proposes that wave-current forces on platforms can be approximately obtained by multiplying the sum of wave forces and current forces by 1 . 04 . The paper studies and demonstrates the computational method by means of physical model test of waves and establishes effective numerical model applicable to practical projects to provide an important guarantee for safety design of project.
出处
《公路交通技术》
2015年第4期80-86,共7页
Technology of Highway and Transport
关键词
乐清湾
桥梁基础
波流力
计算
Yueqing Bay
bridge foundation
wave-current force
calculation
