轮压荷载下高层建筑施工通道安全的有限元模拟

根据曲梁支承薄壳的有限元理论,以驻马店市新华书店工程后浇带处梁板体系的施工通道为例,运用有限元软件进行了汽车轮压荷载作用下的动态模拟分析,并与满布荷载作用下进行了对比分析.结果表明:通道在汽车轮压荷载作用下的位移和应力比满布荷载作用下的位移和应力小,且两者相差接近一倍;随着汽车的移动,两边支座和水平梁板的位移和应力始终维持最小值;满布荷载作用下,最大位移值出现在斜向钢板跨中部位,最大应力值则出现在四角支座处;施工通道在汽车轮压荷载作用下更安全.

Finite Element Simulation for the Safety of High-rise Building Construction Channel under Wheel-pressure Loads

Based on the finite element theory of curved beam bearing thin shell,by means of the finite element software,a dynamic simulation of a constructive channel of beam-slab system at post-cast strip,which belongs to Xinhua library project of Zhumadian city,was conducted under loads which come from motor sport and was compared analytically with the situation where full loads work. The results showed the following: the displacement and stress of the channel under the load of the motor sport was smaller than the counterpart with the covered loads,and the difference between is nearly doubled. The displacement and stress which belong to two-side bearings and horizontal beam and slab keep minimum with the automobile moving. With the covered loads working,the maximum displacement value appears in the cross position of the oblique plate and the maximum stress value appears in the four corners of the bearing; The construction channel under the load of the Motor Sports is safer.