Aiming at the problem that the current optimization of truss reinforced concrete composite slabs does not take into account the chord node spacing of the upper truss,it is proposed that according to the chord node spacing of the upper truss and the mechanical standard lifting points,the lifting point interval and position matrix of the parallel truss direction of the composite slabs of different sizes are constructed in batches.When the maximum tensile normal stress of concrete is relatively small,the optimal lifting points are determined.It is verified by 630 numerical examples of composite slabs based on MATLAB software.The results show that this method can locate the crests of the steel bars on the left and right trusses of the me-chanical standard lifting points in the direction parallel to the truss of the composite slabs in batches,and de-termine the optimal lifting points.Under the four-point optimal lifting,the maximum tensile normal stress of normal composite slab concrete decreases by 0.1%to 41.2%compared with that under the non-optimal point lifting.
关键词
混凝土叠合板/节点间距/吊点
Key words
concrete composite slab/node spacing/lifting point
维普
万方数据