一、主梁向跨数增加时楼板振动的研究规范对主梁向一、二、三跨厂房的设计作了规定,而有些厂房在主梁向是有四跨或更多跨的,其动力反应需作研究.我们在过去工作的基础上就两个厂房对三跨和四跨结构作了计算,并对下述各项作了对比分析:(一)共振(基频共振,下同)扰力点振幅分布(二)共振传递系数分布1.中向中传递;2.非中向中传递;3.中向非中传递;4.扰力区格各点间传递.(三)共振前区扰力点振幅分布(四)共振前区传递系数分布 1. The study code for the vibration of floor slabs when the number of spans of the main beams increases, provides for the design of the main beams to the first, second and third-span plant buildings, and some plants have four or more spans in the main beam direction. The reaction needs to be studied. Based on past work, we calculated the three-span and four-span structures of the two plants and compared and analyzed the following: (1) Resonance (fundamental frequency resonance, the same below) Disturbance Point Amplitude Distribution (2) Resonance Transfer Coefficient Distribution 1. Medium to Medium Transfer; 2. Non-Medium to Medium Transfer; 3. Medium to Non-Medium Transfer; 4. Interference Area Transfer between Points.(C) Before Resonance Area Amplitude Distribution of Scattering Point (IV) Distribution of Transfer Coefficient Before Resonance