摘要
提出一种应用于装配式钢结构的新型楼板。楼板下层为结构层,上层为建筑层,建筑层在装修阶段浇筑,结构层楼板和梁在工厂一体化制作。梁全部隐藏于楼板中,建筑隔墙位置不必与梁对应,使建筑隔墙布置灵活,满足业主建筑功能布局个性化要求。腹板开设孔洞,楼板中管线可以方便地穿越梁,有利于装修阶段管线的个性化布置和安装,同时方便后期的维修和改造。为研究此楼板施工阶段的受力性能,对两块施工阶段的隐形梁和楼板进行了静力性能试验,分析两块楼板的开裂荷载、裂缝发展分布、设计荷载及破坏模式,分析梁的设计承载力,并将有限元分析结果与试验结果进行对比。研究结果表明:隐形梁和楼板在施工阶段具有合理的承载性能,满足施工承载力要求。根据试验结果,针对本文研究的隐形梁和楼板提出了受弯承载力计算方法。
A new type of floor slab applied to prefabricated steel structures was proposed in the paper.The lower floor is the structural floor and the upper floor is the building floor.The building floor is poured at the decoration stage,and the structural floor and beam are integrally manufactured in the factory.The beams are all hidden in the floor.The position of the partition wall does not have to correspond to the beam,which makes the layout of the partition wall flexible and meets the individual requirements of owner for functional layout.Web openings allows the pipeline in the floor to easily pass through the beam,which is conducive to the personalized layout and installation of the pipeline during the decoration stage,and at the same time facilitates later maintenance and renovation.In order to study the mechanical properties of this floor during construction,static performance tests were performed on two beams and floors during construction.The cracking load,crack development distribution,design load and failure mode of two floors were analyzed.The design bearing capacity of the beam was analyzed,and the results obtained from the finite element analysis were compared with the test results.The results showed that the invisible beams and floors had reasonable bearing capacity during the construction stage and could meet the requirements of construction bearing capacity.Based on the test results,a calculation method for the bending bearing capacity of the invisible beams and floors was proposed.
作者
刘学春
强申
邓玉萍
高佳伟
崔付园
LIU Xuechun;QIANG Shen;DENG Yuping;GAO Jiawei;CUI Fuyuan(Beijing Engineering Research Centre of High-Rise and Large-Span Pre-Stressed Steel Structures,Beijing University of Technology,Beijing 100124,China;China Railway Construction Group Co.,Ltd.,Beijing 100131,China)
出处
《工业建筑》
CSCD
北大核心
2020年第5期36-43,共8页
Industrial Construction
基金
国家重点研发计划(2016YFC0701504)
国家自然科学基金项目(51978013)。
关键词
隐形梁楼板
腹板开洞
静力试验
设计承载力
有限元分析
concealed beam in the floor
web opening
static test
design bearing capacity
finite element analysis
作者简介
第一作者:刘学春,男,1974年出生,博士,教授。电子信箱:liuxuechun@bjut.edu.cn。
