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钢筋混凝土框架结构的抗侧移能力在各种常见的房屋建筑结构体系中是较弱的,且当建筑高度接近结构适用高度限值时,这种能力的不足尤为突出。使混凝土框架结构增加抗侧移刚度的方法有:增设少部分剪力墙使其成为框架-剪力墙结构或增设钢支撑成为钢支撑-框架结构。本文以一个实际工程为例,对比了采用有少墙框架-剪力墙结构和钢支撑-框架结构的结构方案差异。在符合抗震规范对结构体系的各项要求条件下,钢支撑-框架结构在抗震性能及经济适用等方面都具有一定的优越性。同时针对框架结构的抗侧移能力不足或框架-剪力墙结构过大的建筑高度范围总结了其他可用的结构体系,并分析了各种结构体系如何满足建筑要求、结构优缺点、适用范围等。最后针对目前建筑工程开发建设中结构方案设计优化存在的问题提出一些建议。
The anti-slip ability of reinforced concrete frame structures is weaker in a variety of common building structural systems and this is especially true when the height of the building is close to the applicable height limit of the structure. The concrete frame structure to increase the anti-lateral stiffness of the way: the addition of a small part of the shear wall to become a frame-shear wall structure or additional steel support to become steel support - frame structure. In this paper, a practical project is taken as an example to compare the difference of the structural schemes with less wall-shear wall structure and steel support-frame structure. In line with the seismic requirements of the structural system of the conditions, steel support - frame structure in the seismic performance and economic applications have some advantages. At the same time, some other available structural systems are summed up in view of the lack of anti-lateral displacement ability of the frame structure or the height of the frame-shear wall structure, and analyzes how the various structural systems meet the requirements of the building, the advantages and disadvantages of the structure, the applicable range, and the like. . Finally, some suggestions are put forward to solve the existing problems in structural design optimization in the current development of construction projects.