The invention is applicable to the technical field of constructional engineering, and provides a novel variable cross-section structural node of a steel crane beam, which comprises a flange, a web plate and a force transmission part, and the force transmission part is used for assisting the web plate in force transmission. The straight sealing plate is arranged to be the 50-degree inclined sealing plate, so that the stress of the lower flange and the web at the high section is transmitted to the lower flange and the web at the end section through the inclined sealing plate and the web in the area, compared with the straight sealing plate and the inclined sealing plate, the force transmission is more direct and efficient, the force transmission burden of the web at the variable section is reduced, and the service life of the web is prolonged. The problem of stress concentration at the variable cross section is effectively reduced, and the fatigue performance of the end part of the crane beam is improved; compared with a right-angle structure, the maximum stress of the lower flange and the web at the variable cross section of the node is reduced by about 15% and 10% respectively, and the stress distribution is more uniform; the structural node has the characteristics of being clear in stress, safe, reliable and convenient to manufacture.
本发明适用于建筑工程技术领域,提供了一种钢吊车梁新型变截面构造节点,包括翼缘和腹板,还包括传力件,所述传力件用于辅助腹板进行传力。本发明通过将直封板设置成50°的斜封板,使高截面处下翼缘及腹板的应力通过斜封板及该区域腹板传递至端部截面下翼缘及腹板,相较于直封板,斜封板传力更直接、高效,减小了变截面处腹板的传力负担,有效减小了变截面处应力集中问题,改善了吊车梁端部的疲劳性能;相较于直角式构造,该节点变截面处下翼缘及腹板最大应力分别减小约15%和10%,应力分布更均匀;该构造节点具有受力明确、安全可靠、便于制作的特点。
Novel variable cross-section structural node of steel crane beam
一种钢吊车梁新型变截面构造节点
2022-03-01
Patent
Elektronische Ressource
Chinesisch
IPC: | B66C Krane , CRANES |
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