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（廈門大學(xué)土木工程系， 廈門 361005）

［摘要］鋼筋混凝土框架結(jié)構(gòu)的抗側(cè)移能力在各種常見的房屋建筑結(jié)構(gòu)體系中是較弱的，且當(dāng)建筑高度接近結(jié)構(gòu)適用高度限值時(shí)，這種能力的不足尤為突出。使混凝土框架結(jié)構(gòu)增加抗側(cè)移剛度的方法有：增設(shè)少部分剪力墻使其成為框架-剪力墻結(jié)構(gòu)或增設(shè)鋼支撐成為鋼支撐-框架結(jié)構(gòu)。本文以一個(gè)實(shí)際工程為例，對(duì)比了采用有少墻框架-剪力墻結(jié)構(gòu)和鋼支撐-框架結(jié)構(gòu)的結(jié)構(gòu)方案差異。在符合抗震規(guī)范對(duì)結(jié)構(gòu)體系的各項(xiàng)要求條件下，鋼支撐-框架結(jié)構(gòu)在抗震性能及經(jīng)濟(jì)適用等方面都具有一定的優(yōu)越性。同時(shí)針對(duì)框架結(jié)構(gòu)的抗側(cè)移能力不足或框架-剪力墻結(jié)構(gòu)過大的建筑高度范圍總結(jié)了其他可用的結(jié)構(gòu)體系，并分析了各種結(jié)構(gòu)體系如何滿足建筑要求、結(jié)構(gòu)優(yōu)缺點(diǎn)、適用范圍等。最后針對(duì)目前建筑工程開發(fā)建設(shè)中結(jié)構(gòu)方案設(shè)計(jì)優(yōu)化存在的問題提出一些建議。

［關(guān)鍵詞］框架結(jié)構(gòu)； 框架-剪力墻結(jié)構(gòu)； 鋼支撐-框架結(jié)構(gòu)； 結(jié)構(gòu)方案設(shè)計(jì)； 設(shè)計(jì)優(yōu)化

中圖分類號(hào)： TU398.7 文獻(xiàn)標(biāo)識(shí)碼： A文章編號(hào)：  1002-848X(2016)S1-0223-05

Structural scheme optimization of engineering projects design

Zhang Hanlin, Chen Jiawei, Wang Weifeng, Shi Jianguang

(Department of Civil Engineering, Xiamen University, Xiamen 361005, China)

Abstract: The lateral stiffness of frame structure is poor among varieties of common reinforced concrete structures. And it is especially poor when the height approaches the limit of frame structure. The lateral stiffness can increase by adding a small amount of shear wall or steel shotcrete to the concrete frame structure. The two structural schemes by a practical project were compared. It is showed that steel braced frame structure systems are superior in seismic performance and economic application, etc. In view of the poor lateral displacement capacity and wide range of building height of frame shear wall structure, this paper summed up other available structural systems, analyzed the merits and drawbacks, applicable scope, and how these systems meet the architectural requirements, etc. Finally, some suggestions were put forward in view of the problems existed in the optimization of structure system design in building projects.

Keywords: frame structure; frame-shear wall structure; steel braced frame structure; structural system design; optimum design