摘   要：为了解决传统混凝土雨污水检查井易出现病害（如井体开裂）的问题，提出了一种预制超高性能混凝土（UHPC）雨污水检查井。通过结构设计和仿真分析对预制UHPC雨污水检查井的性能进行了评估研究，并对其制作和运输方式进行了介绍。结果表明：UHPC雨污水检查井的性能指标满足相关规范要求，受力性能较好，制作和运输方便，可为后续预制UHPC雨污水检查井的设计与应用提供参考。 Abstract: In order to solve the problem of common diseases (such as cracking of the well body) in traditional concrete sewage inspection well, a prefabricated UHPC sewage inspection well was proposed. The performance of the prefabricated UHPC sewage inspection well was evaluated and studied through structural design and simulation analysis, and its manufacturing and transportation methods were introduced. The results show that the performance indicators of UHPC sewage inspection well meet the requirements of relevant specifications, with good stress performance and convenient production and transportation, which can provide reference for the design and application of prefabricated UHPC sewage inspection well in the future.

张书峰,王蕾,许佳波,等.预制UHPC雨污水检查井的设计与仿真分析[J].混凝土与水泥制品,2024(11):39-42. ZHANG S F,WANG L,XU J B,et al.Design and simulation analysis of prefabricated UHPC sewage inspection well[J].China Concrete and Cement Products,2024(11):39-42.

摘   要：通过静力试验研究了环氧树脂混凝土装配式桁架下弦K型节点的破坏形态、承载能力和节点板的应力与应变分布情况，并进行了有限元模拟分析。结果表明：环氧树脂混凝土下弦K型节点在下弦杆靠近节点板的两侧出现5条竖直裂缝，最终节点板左侧下弦杆处的竖直裂缝前后贯通，弦杆发生拉弯破坏，节点的极限承载力为421.5 kN；有限元模拟结果与试验结果吻合较好，验证了有限元模拟的可靠性。 Abstract: The failure mode, bearing capacity, and stress and strain distribution of K-type joint under chord of epoxy resin concrete prefabricated truss were studied through static tests, and the finite element simulation analysis was conducted. The results show that there are 5 vertical cracks on both sides of the lower chord of the epoxy resin concrete K-type joint near the joint plate. Finally, the vertical cracks at the lower chord on the left side of the joint plate penetrate forward and backward, and the chord undergoes tensile and bending failure. The ultimate bearing capacity of the joint is 421.5 kN. The finite element simulation results are in good agreement with the experimental results, verifying the reliability of the finite element simulation.

谢新颖,李晓峰,金玉杰,等.环氧树脂混凝土装配式桁架下弦K型节点力学试验及有限元分析[J].混凝土与水泥制品,2024(11):43 -48. XIE X Y,LI X F,JIN Y J,et al.Mechanical test and finite element analysis of K-type joint under chord of epoxy resin concrete prefabricated truss[J].China Concrete and Cement Products,2024(11):43 -48.