Superposition of two circular Airy vortex beams (CAVB), with opposite sign topological charges ($l$), produces a new type of petal beam called petal-like circular Airy beam (PCAB) with a transverse field distribution in the form of azimuthally modulated concentric rings that follow Airy function over the radial distance on a transverse plane. In this paper, tight focusing of a truncated PCAB and its application in optical trapping is numerically investigated. It is shown that by adjusting the topological charge, $l$, and the aperture radius of the focusing objective lens, $R$, four different trapping configurations can be achieved: a single transverse trap at a single axial position, a multi-trap geometry at a single axial position, two single transverse traps at two positions along the axial direction, and two multi-trap geometries at two different axial positions. It is also shown that the number of trapped particles in the multi-trap configurations is $2l$ per focal plane, while the number of axial trap positions is determined by the truncation aperture size, $R$. Moreover, trap stiffnesses and corresponding potential energies for the trapping configurations are presented and discussed. Finally, for a special case of large $R$ and $l$, it is shown that the focused beam may both guide and traps the particles.

两个圆形艾里涡旋光束 (CAVB) 的叠加，具有相反符号的拓扑电荷 ($升$)，产生一种称为花瓣状圆形艾里光束 (PCAB) 的新型花瓣光束，其横向场分布呈方位调制同心环形式，在横向平面上的径向距离上遵循艾里函数。在本文中，对截断的 PCAB 的紧密聚焦及其在光阱中的应用进行了数值研究。结果表明，通过调整拓扑电荷，$升$，和聚焦物镜的孔径半径， $\mathrm{电阻}$，可以实现四种不同的陷阱配置：单个轴向位置的单个横向陷阱，单个轴向位置的多陷阱几何形状，沿轴向两个位置的两个单横向陷阱，以及两个多陷阱几何形状不同的轴向位置。还表明，在多陷阱配置中被困粒子的数量是$2升$ 每个焦平面，而轴向陷阱位置的数量由截断孔径大小决定， $\mathrm{电阻}$. 此外，还介绍和讨论了陷阱刚度和陷阱配置的相应势能。最后，对于一个大的特殊情况$\mathrm{电阻}$ 和 $升$，表明聚焦光束可以引导和捕获粒子。