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傅劍平    白紹良
（重慶大學(xué)土木工程學(xué)院 400045）

[提要] 《混凝土結(jié)構(gòu)設(shè)計(jì)規(guī)范》( GBJ10-89)因缺乏試驗(yàn)依據(jù)，僅根據(jù)推斷給出了鋼筋混凝土框架頂層中間節(jié)點(diǎn)抗震驗(yàn)算的有關(guān)規(guī)定，而將主要構(gòu)造規(guī)定留作空缺。此次規(guī)范修訂，根據(jù)試驗(yàn)結(jié)果驗(yàn)證了原規(guī)范的抗震抗剪規(guī)定，并在工程經(jīng)驗(yàn)和試驗(yàn)結(jié)果的基礎(chǔ)上，給出了抗震及非抗震頂層中間節(jié)點(diǎn)較完整的構(gòu)造規(guī)定，著重說明了項(xiàng)層中間節(jié)點(diǎn)的受力特點(diǎn)及修訂后規(guī)范有關(guān)設(shè)計(jì)及構(gòu)造規(guī)定的背景情況。
[關(guān)鍵詞]  鋼筋混凝土  框架  頂層中間節(jié)點(diǎn)  規(guī)范

Relevant provisions on seismic check of interior top-column joints in the former Design Code of Reinforced Concrete Structures( GBJl0-89), were based on experiences, not on reliable testing data. And no provisions were provided for detailing. ln the recent revision of the code, provisions on seismic shear check are verified by testing data. Furthermore, a set of provisions on detailing are given on the basis of both engineering experiences and testing data. Background to both the behavior of such joints and according revised design and detailing provisions is provided.
Keywords: reinforced concrete; frame; top-column joint; design code