一种UHPC预应力传递装置承载力试验及有限元分析研究
Study on Bearing Capacity Test and Finite Element Analysis of a UHPC Prestressing Transfer Device
摘要: 针对预应力抗浮锚杆，提出了一种新的UHPC预应力传递装置。为了研究该装置在预应力张拉过程中的轴压受力性能，对4个不同型号的足尺装置试件分别开展了物理试验研究及有限元验证，分析了不同型号装置在轴心压力作用下的轴向位移变化与极限承载力的变化规律。结果表明：各型号试件的上板部分均发生了弯曲破坏现象，短柱靠近上板部分出现横向裂缝。各试件的轴压极限承载力都超过了设计值。其中，HM18装置的轴压极限承载力相对设计值提高最多，增加了87%；HM45装置的轴压极限承载力相对设计值提高得最少，只增加了2%。该新型UHPC传递装置在预应力抗浮锚杆中具有较好的适用性。
Abstract: A new UHPC prestressing transfer device is proposed for prestressing anti-floating anchors. To analyze the axial pressure stressing performance of this device during prestressing tensioning, physical tests and finite element verification were conducted on four different models of foot-size device specimens. The changes in axial displacement and the rule of change of ultimate bearing capacity under the action of axial pressure of different models of devices were analyzed. The results indicate that the bending damage phenomenon occurred in the upper plate part of each model’s specimen, and transverse cracks appeared in the short column near the upper plate part. Additionally, the axial compressive ultimate bearing capacity of each specimen exceeded the design value. The axial compressive ultimate load capacity of the HM18 device increased by 87% relative to the design value, while the HM45 device had the smallest increase of only 2%. The new UHPC transfer device is highly applicable for prestressed anti-floating anchors.
文章引用：唐振兴, 陈少玉, 陈赛国, 刘培林. 一种UHPC预应力传递装置承载力试验及有限元分析研究[J]. 土木工程, 2025, 14(12): 3065-3078. https://doi.org/10.12677/hjce.2025.1412328

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