为了减小压裂支管在压裂作业过程中的振动，采用流固耦合分析方法，考虑压裂泵自身振动和高压压裂液对压裂支管冲击作用的基础上，对压裂支管开展模态分析和谐响应分析，研究弯头角度和压裂支管支撑数量对压裂支管振动的影响。结果表明：在当前布局下，管汇的前六阶模态振型主要振动位置出现在双弯头2、3、4处，表明压裂支管主要振动变形发生在其下端，即远离压裂车的双弯头处，针对双弯头2、3、4处为薄弱部位，以最大位移响应幅值为准则，得出各双弯头在各连接角度下的较小位移响应幅值，表明各连接角度为现场实际压裂作业的最优选择；当采用4个弹性支撑时，最大振幅远小于2、3个弹性支撑，表明在压裂支管下端增加弹性支撑可减弱振动幅值，得出在具体工作范围内下的最优方案。研究成果可为压裂支管的振动特性及减振抑振提供理论指导。

In order to reduce the vibration of fracturing branch pipe during fracturing operation, the fluid-structure coupling analysis method was used to carry out the modal analysis and harmonious response analysis of fracturing branch pipe, considering the impact of fracturing pump vibration and high-pressure fracturing fluid on fracturing branch pipe. The influence of angle of bend and number of fracturing branch pipe supports on fracturing branch pipe vibration was studied. The results show that under the current layout, the main vibration positions of the first six modal modes of the manifold appear at double elbows 2, 3, and 4, indicating that the main vibration deformation of the fracturing branch pipe occurs at its lower end, that is, at the double elbows far away from the fracturing truck. Considering the weak points at double elbows 2, 3, and 4, the smaller displacement response amplitudes of each double elbow at each connection angle are obtained based on the maximum displacement response amplitude. Indicating that each connection angle is the best choice for the actual fracturing operation. When four elastic supports are used, the maximum amplitude is much smaller than that of two or three elastic supports, indicating that adding elastic supports at the lower end of the fracturing branch pipe can weaken the vibration amplitude, and the optimal scheme can be obtained under the specific working range. The research results can provide theoretical guidance for the vibration characteristics and vibration reduction of fracturing branch pipe.