首都體育館比賽館結(jié)構(gòu)抗震加固研究與設(shè)計
楊勇，陳彬磊，李文峰，苗啟松
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(北京市建筑設(shè)計研究院，100045)［提要］首都體育館比賽館作為2008年奧運會排球比賽場地之一，工程竣工至今已40年。加固改造主要內(nèi)容有：在整體抗震加固方面，將原有框架結(jié)構(gòu)改造為框架 剪力墻結(jié)構(gòu)，結(jié)合使用具有較大初始剛度的軟鋼阻尼器，徹底改善了結(jié)構(gòu)的水平抗震能力并實現(xiàn)減震耗能的目的。在構(gòu)件加固方面，采用大直徑挖孔樁和條形承臺加固基礎(chǔ)，以滿足剪力墻基礎(chǔ)受力要求；采用增大截面或粘鋼方法加固梁柱抗震承載力不足的構(gòu)件；增加支座裙套防止支座在地震時發(fā)生塌落，對大跨屋架支座進行了抗震加固。經(jīng)多方案比選，最大限度地節(jié)省了投資。［關(guān)鍵詞］抗震加固；框架結(jié)構(gòu)；框架；剪力墻結(jié)構(gòu)；軟鋼阻尼器；抗震支座Research and Design of the Capital Gymnasium on Anti-seismic Reinforcement/Yang Yong, Chen Binlei, Li Wenfeng, Miao Qisong (Beijing Institute of Architectural Design, Beijing 100045, China)Abstract:The Capital Gymnasium was constructed in 1968 and will be one of the places for volleyball game competition of 2008 Olympic Game. The reinforcement mainly includes: as respect of whole anti-seismic reinforcement, the original frame structure is modified as frame shear-wall structure and soft steel dampers are applied to improve the original structure s horizontal anti-seismic performance and to absorb earthquake energy. As respect of member reinforcement, large diameter stakes are applied to reinforce the foundation of new shear-wall. The means of magnifying concrete dimension is applied to reinforce the old concrete columns, and the means of gluing steel plates is applied to reinforce the old concrete beams. The connections of steel structure roof are reinforced to prevent the roof from falling off when large earthquake happens. By the comparison among several plans, the investment was saved to the largest extent.Keywords: anti-seismic reinforcement; frame structure; frame shear-wall structure; soft steel damper; anti-seismic connection
