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（廣州瀚華建筑設(shè)計(jì)有限公司， 廣州 510655）
［摘要］根據(jù)對TOD全框支剪力墻結(jié)構(gòu)設(shè)計(jì)的若干實(shí)踐，提出該種結(jié)構(gòu)體系的特點(diǎn)、難點(diǎn)和熱點(diǎn)，包括樓層剛度比、受剪承載力比、柱與剪力墻的本質(zhì)特征與角色變換、與“雞腿式”結(jié)構(gòu)的區(qū)別、框支柱頂屈服對結(jié)構(gòu)安全的影響、車輛段先行設(shè)計(jì)做法等問題，并對難點(diǎn)熱點(diǎn)問題通過推理分析、算例對比、工程實(shí)例驗(yàn)證等方法進(jìn)行了深入探討。建議采用拉彎或壓彎承載力計(jì)算TOD全框支剪力墻結(jié)構(gòu)的層間承載力比；《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》（JGJ 3—2010）附錄E中的等效剪切剛度近似公式在某種情形下與實(shí)際存在較大偏差；從受力和變形本質(zhì)特征的角度看，柱與墻常常發(fā)生角色變換，無論柱還是墻，其本身均可用桿單元或墻單元模擬，但需注意單元無幾何尺寸方向?qū)α嚎缍纫鸬钠睿蝗蛑Ъ袅Y(jié)構(gòu)在結(jié)構(gòu)形式、承載力和剛度突變的關(guān)系及產(chǎn)生原因、抗震能力等方面均不同于“雞腿式”柔性底框結(jié)構(gòu)；在強(qiáng)震作用下，框支柱頂端可允許先于轉(zhuǎn)換梁屈服；建議以初步建筑方案整體建模計(jì)算的構(gòu)件最大內(nèi)力和配筋結(jié)果為基準(zhǔn)，對可能影響范圍的車輛段結(jié)構(gòu)進(jìn)行設(shè)計(jì)。
［關(guān)鍵詞］“以公共交通為導(dǎo)向”的開發(fā)模式； 全框支剪力墻結(jié)構(gòu)； 承載力比； 剪切剛度比； 墻柱受力變形本質(zhì)； “雞腿式”結(jié)構(gòu)； 柔性底框結(jié)構(gòu)； 車輛段先行設(shè)計(jì)做法
中圖分類號：TU318-2， TU375， TU973文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)10-0075-08
Discussions on difficult and hot issues in design of TOD fully frame-supported shear wall structure
YAO Yongge, ZHENG Jiandong, YAN Shiji, HE Lirong, QIU Junwei
(Guangzhou Hanhua Architects+Engineers Co., Ltd., Guangzhou 510655, China)
Abstract:According to the practice of TOD fully frame-supported shear wall structure design, the characteristics, difficulties and hot issues of this structural system were put forward, including floor stiffness ratio, shear bearing capacity ratio, the essential characteristics and role transformation of column and shear wall, the difference with “chicken leg” shaped structure, the influence of the top yield of the frame-supported column on structural safety, design method taking depot as priority, and the difficulties and hot issues were discussed through the methods of reasoning analysis, comparison of calculation examples and verification of engineering examples. It is suggested to calculate the story bearing capacity ratio of TOD fully frame-supported shear wall structure by tension bending or compression bending; the approximate formula of equivalent shear stiffness in Appendix E of Technical specification for concrete structures of tall building (JGJ 3—2010) has a large deviation from the actual situation in some cases; from the perspective of the essential characteristics of stress and deformation, “column” and “wall” often have role transformation, and both the “column” and “wall” can be simulated by single element or wall element, but it should be noted that the element does not have the deviation caused by the geometric dimension direction to the beam span; fully frame-supported shear wall structure is different from “chicken leg” shaped flexible bottom frame structure in structural form, bearing capacity, relationship between stiffness mutation, cause of occurrence, seismic capacity and other aspects; under strong earthquake, the top of frame column can be allowed to yield before the transfer beam; It is suggested that the maximum internal force and reinforcement of the components calculated by the overall modeling of the initial building scheme should be used as the benchmark to design the depot structure which may affect the scope.
Keywords:Transit-Oriented-Development; fully frame-supported shear wall structure; bearing capacity ratio; shear stiffness ratio; stress and deformation nature of wall column; “chicken leg” shaped structure; flexible bottom frame structure; design method taking depot as priority
作者簡介：姚永革，碩士，一級注冊結(jié)構(gòu)工程師，教授級高級工程師，mail:yaoyongge@gzhanhua.com。
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