- 摘 要
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（上海華瀛建筑科技有限公司 200002）
【提要】 基底凈反力的計算應(yīng)在服從總體力平衡原則的前提下通過各點力對應(yīng)計算求得。通過再分布荷載概念闡述基底凈反力在不同荷載形式作用下的分布形式及計算方法，完全不同于傳統(tǒng)的認(rèn)識和理論中將基底反力與基礎(chǔ)梁板自重（包括基礎(chǔ)梁板之上的永久荷載和可變荷載）之差值作為基底凈反力。通過逐級討論闡述文章立論的正確性和應(yīng)用價值。
【關(guān)鍵詞】 凈反力 基底反力 卸荷力 曲線分布 支撐介質(zhì)
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 stepbystep discussions.
Keywords:net reaction； reaction of footing piece；unload force；redistribute curve；brace medium
