- 摘 要
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（1 清華大學(xué) 土木工程安全與耐久教育部重點(diǎn)實(shí)驗(yàn)室， 北京 100084；2 清華大學(xué)建筑設(shè)計(jì)研究院有限公司， 北京 100084）
［摘要］可更換鋼連梁由跨中的消能梁段和兩端的非消能梁段組成，梁段之間采用可拆卸的連接方式。相比傳統(tǒng)鋼筋混凝土（RC）連梁，可更換鋼連梁塑性變形能力大、耗能能力強(qiáng)，且震后可快速修復(fù)，能提升高層建筑的抗震韌性。在總結(jié)已有研究的基礎(chǔ)上，系統(tǒng)介紹了可更換鋼連梁的抗震設(shè)計(jì)方法和構(gòu)造措施，可為工程設(shè)計(jì)提供參考。具體包括：消能梁段和非消能梁段部件設(shè)計(jì)，消能梁段-非消能梁段連接設(shè)計(jì)，可更換鋼連梁上部的RC樓板設(shè)計(jì)，可更換鋼連梁-RC墻肢節(jié)點(diǎn)設(shè)計(jì)，可更換鋼連梁的非線性分析模型和性能狀態(tài)判別準(zhǔn)則。最后，介紹了一棟高烈度區(qū)高層建筑應(yīng)用可更換鋼連梁的實(shí)例。
［關(guān)鍵詞］可更換鋼連梁； 消能梁段； 連接； 鋼筋混凝土樓板； 連梁-墻肢節(jié)點(diǎn)； 抗震設(shè)計(jì)； 性能評價(jià)
中圖分類號(hào)：TU392-1文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2020)12-0100-08
Seismic design method of replaceable steel coupling beams
JI Xiaodong1, ZHAO Zuozhou1, WANG Yandong1, JING Jie2
(1 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China; 2 Architectural Design & Research Institute of Tsinghua University Co., Ltd., Beijing 100084, China)
Abstract:The replaceable steel coupling beam (RSCB) comprises a central fuse shear link connected to steel beam segments at its two ends using specialized removable connections. The RSCBs provide larger inelastic deformation and energy dissipation than conventional reinforced concrete (RC) coupling beams. The superior replaceability of RSCBs can enhance seismic resiliency of high-rise buildings. By summarizing past studies, an overview was presented of seismic design considerations and detailing requirements for RSCBs, which was intended as references for practicing engineers. The following five key issues were included: shear link and beam segment design, coupling beam-to-wall joint design, design of RC slabs above RSCBs, RSCB-to-RC wall joint design, and nonlinear analysis modelling and performance assessment criteria for RSCBs. In the end, a real-world application of RSCBs was presented in a high-rise building in high seismic fortification intensity region.
Keywords:replaceable steel coupling beam; shear link; connection; RC slab; coupling beam-to-wall joint; seismic design; performance assessment
*北京市自然科學(xué)基金杰出青年科學(xué)基金項(xiàng)目（JQ18029）。
作者簡介：紀(jì)曉東，博士，副教授，博士生導(dǎo)師，Email:jixd@mail.tsinghua.edu.cn。
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