四边简支薄壁箱体空心楼盖竖向荷载下挠度计算与分析

就薄壁箱体空心楼盖这种在大跨度大空间中广泛应用的结构体系,分别利用拟板法,差分法,ANSYS 有限元方法对其在竖向荷载作用下进行挠度计算并比较分析。对于密肋楼盖与薄壁箱体空心楼盖在混凝土用量相同的前提下,比较了二者在相同荷载条件下的工作性能。以此体现了在大跨度大空间当中,薄壁箱体空心楼盖的优点;同时,以对其工作性能的分析比较,作为薄壁箱体空心楼盖设计的基础。

ANALYSIS AND CALCULATION ON DEFLECTION OF THE CAST-IN-SITU CONCRETE HOLLOW FLOOR OF THIN-WALL CORE BOX WITH SIMPLY SUPPORTED EDGES UNNDER THE VERTICAL LOADS

The cast-in-situ concrete hollow floor of thin-wall core box is widely used in large space buildings.In this text,the pseudo-plate method,finite differences method,FEM method are advanced to calculate and analyze the defection of this system under the vertical loads.Based on the same quantity of concrete,we can see the differences in deflection between the hollow floor and the waffle slab.Compare with the results,it is obvious that under the same load,use the same concrete quantity,the deflection of the former is less than the latter.It is hoped that our study on the working performance of different floors can be the foundation of the design of this hollow floor with thin - wall core box.