摘要
针对长江上游某船闸工程,运用ANSYS软件分别模拟带键槽缝和带平缝的分离式闸室结构。缝的切向接触采用库伦摩擦模型,法向接触具有传压不传拉的特性。探讨了接缝开度、结构的竖向位移及结构的应力状态等方面的规律,综合分析了键槽缝对结构的影响。研究表明:与平缝相比,梯形键槽闸室结构接缝处的开度小、整体性好,接缝两侧闸墙和底板位移连续,地基应力分布较均匀。增大键槽角度有助于减小接缝开度,使地基应力分布更趋均匀。
Taking a lock on the upstream of the Yangtze River for example, we simulate the separate lock with shear keys and separate lock with flat joints by software ANSYS. In this process the Coulomb friction model is used as the tangential contact constitutive model and it is thought that the joints can pass the contact pressure, but not the pull. We investigate the joints opening size, the vertical displacement and stress state of structure, and analyze comprehensively the impact of the shear keys. Studies show that comparing with flat joints model, the joints opening size of the shear keys model is small, and the integrity property is good; the displacement of the chamber wall and floor is continuous; the stress distribution of the foundation below the floor is uniform. Increasing the shear keys' angle is helpful in reducing the joint opening and uniform the ground stress distribution.
出处
《水运工程》
北大核心
2014年第10期129-133,共5页
Port & Waterway Engineering
关键词
船闸闸室
键槽
接触模型
受力分析
lock chamber
shear keys
contact model
stress analysis