Discussion on the installation checking method of precast composite floor slab with lattice girders

3rd International Conference on Energy Equipment Science and Engineering

Chen, Li^1 ; Jin, Xing^1 ; Wang, Yahui^1 ; Zhou, Hele^1 ; Gu, Jianing^1

Zhejiang Baoye Modern Construction Industrialization Manufacturing CO, Ltd, Shaoxing, Zhejiang

412000, China^1

关键词: Composite floor slabs;    Compression stress;    Load combination;    Negative moments;    Shear bearing capacity;    Shear instability;    Stability bearing capacities;    Structural precast components;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012060/pdf
DOI  :  10.1088/1755-1315/128/1/012060

来源: IOP

【 摘 要 】

Based on the installation checking requirements of China's current standards and the international norms for prefabricated structural precast components, it proposed an installation checking method for precast composite floor slab with lattice girders. By taking an equivalent composite beam consisted of a single lattice girder and the precast concrete slab as the checking object, compression instability stress of upper chords and yield stress of slab distribution reinforcement at the maximum positive moment, tensile yield stress of upper chords, slab normal section normal compression stress and shear instability stress of diagonal bars at the maximum negative moment were checked. And the bending stress and deflection of support beams, strength and compression stability bearing capacity of the vertical support, shear bearing capacity of the bolt and compression bearing capacity of steel tube wall at the bolt were checked at the same time. Every different checking object was given a specific load value and load combination. Application of installation checking method was given and testified by example.