Experimental and analytical study of the composite action between Hollowcore precast panels, and standard hot rolled steel beam sections

空心预制板与标准热轧钢梁截面复合作用的实验与分析研究

• 批准号: 543651-2019
• 负责人: Roy, Nathalie
• 金额: $ 3.24万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=720749
• 关键词: Experimental; analytical; study; composite; action

Floor construction with precast Hollowcore panels produced by Lafarge Precast Edmonton results in a commonly used rigid floor system. Continuity between the elements is ensured by bent rebars and shear studs. Once all these elements are installed, a structural concrete topping is poured between the reinforced concrete panels and over the entire floor. Engineers currently consider the floor system as a rigid diaphragm. However, the extent of composite action between the rigid diaphragm and the steel beams is not known. Therefore its potential benefit is not taken into account in the current design procedures for the steel structure. Design engineers simply do not consider any composite action between the Hollowcore and the standard hot rolled beam section. The project will allow Lafarge Precast Edmonton and Niche Development corp. to obtain accurate values of parameters needed to eventually calculate the composite action between Hollowcore panels and the steel beams, leading to design equations for bending strength and deflections.

采用拉法基预制埃德蒙顿生产的预制空心板的楼板结构形成了常用的刚性楼板系统。构件之间的连续性由弯曲钢筋和剪力钉保证。一旦所有这些元件安装完毕，结构混凝土顶层就被浇注在钢筋混凝土面板之间和整个地板上。工程师们目前认为楼板系统是一个刚性的横隔板。然而，刚性隔板和钢梁之间的复合作用的程度是未知的。因此，在目前的钢结构设计程序中没有考虑其潜在的好处。设计工程师根本不考虑空心板和标准热轧梁截面之间的任何复合作用。 该项目将使拉法基预制埃德蒙顿和利基发展公司获得所需的参数的准确值，最终计算空心板和钢梁之间的复合作用，导致弯曲强度和挠度的设计方程。