（上海华瀛建筑科技有限公司 200002）
【提要】 基底净反力的计算应在服从总体力平衡原则的前提下通过各点力对应计算求得。通过再分布荷载概念阐述基底净反力在不同荷载形式作用下的分布形式及计算方法，完全不同于传统的认识和理论中将基底反力与基础梁板自重（包括基础梁板之上的永久荷载和可变荷载）之差值作为基底净反力。通过逐级讨论阐述文章立论的正确性和应用价值。
【关键词】 净反力 基底反力 卸荷力 曲线分布 支撑介质
Calculation of Net Reaction on Footing Piece/Chang Junwen（Shanghai Huaying Construction Technology Co.,Ltd., Shanghai 200002, China）
Abstract:The calculation of net reaction of the foundation slab should be made through the calculation of correspondence force at each point under the premise that the general force is in balance. The specifications of distribution form and calculation mode of the net reaction of the foundation slab under the concept of redistribution load is totally different form the traditional knowledge and theory that the net reaction of the foundation slab is obtained
from the balance between the reaction of the foundation slab and the owe weight of the foundation slab (including the permanent load and variable load on the foundation slab). The correctness and practical value are specified through stepbystep discussions.
Keywords:net reaction； reaction of footing piece；unload force；redistribute curve；brace medium