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为研究复杂构造双壁钢围堰异形刃脚的吊装及变形计算,采用有限元软件MSC.Marc及ADINA,利用三维有限元方法,分别介绍了异形刃脚双壁钢围堰的吊装、考虑围堰与河床可相对位移状态下的围堰整体位移及围堰内部构件内力计算的原理、简化思路及计算方法。并以重庆江津观音岩长江大桥双壁钢围堰为例,介绍了上述内容的具体应用方法。通过计算选取并优化了钢围堰异形刃脚吊装的方案。当围堰无法提供足够的嵌固深度时,有必要利用有限元软件提供的接触分析功能进行整体位移计算,以确定围堰的整体稳定性及位移量。
In order to study the hoisting and deformation calculation of heterogeneous blade edge of double-wall steel cofferdam with complex structure, finite element software MSC.Marc and ADINA are used to describe the lifting of double-wall steel cofferdam with edge-cutted blade and two- The whole displacement of the cofferdam under the relative displacement of the weir and the riverbed and the principle of internal force calculation of the cofferdam internal components, and the simplification of the idea and calculation method. Taking the double-wall steel cofferdam of Jiangjin Guanyinyan Yangtze River Bridge in Chongqing as an example, the concrete application methods of the above contents are introduced. Through the calculation and optimization of steel cofferdam shaped blade edge lifting program. When the cofferdam can not provide sufficient depth of embedment, it is necessary to use the contact analysis function provided by the finite element software to calculate the overall displacement to determine the overall cofferdam stability and displacement.