水压力作用下钢护筒受力性能研究

Research on Mechanical Performance of Steel Protective Tube under Water Pressure

针对超深钢护筒在水压力作用下的受力性能问题,本文采用ANSYS进行了不同壁厚钢护筒的有限元模拟。研究结果表明,钢护筒的水平位移和应力随着钢护筒深度的增加而增大;随着壁厚的变大,钢护筒水平位移逐渐减小,壁厚2.5 cm时钢护筒最大水平位移为壁厚0.5 cm时钢护筒最大水平位移的0.172;随着壁厚的变大,钢护筒米塞斯应力极值逐渐减小。壁厚2.5 cm时钢护筒米塞斯应力极值为壁厚0.5 cm时钢护筒米塞斯应力极值的0.164。

Aiming at the mechanical performance of ultra-deep steel casing under water pressure,this paper used ANSYS to carry out finite element simulations of steel casings with different wall thicknesses.The research results show that the horizontal displacement and stress of the steel casing increase with the increase of the depth of the steel casing;As the wall thickness increases,the horizontal displacement of the steel casing gradually decreases,when the wall thickness is 2.5 cm,the maximum horizontal displacement of the steel casing is 0.172 of the maximum horizontal displacement of the steel casing when the wall thickness is 0.5 cm;as the wall thickness increases,the Mises stress extreme value of the steel casing gradually decreases.When the wall thickness is 2.5 cm,the extreme value of Mises stress of the steel casing is 0.164 of the extreme value of Mises stress of the steel casing when the wall thickness is 0.5 cm.