南京翻译公司|合肥翻译公司|南京同传翻译公司-025-83805317
南京翻译公司|合肥翻译公司|南京同传翻译公司-025-83805317

“强柱弱梁”的抗震设计

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  In order to explore the “strong column weak beam” seismic design principles of reinforced concrete frames, two lattice system columns with V-braces and X-braces and a test specimen without brace were designed for cyclic tests. Based on the test results, the cracking load, ultimate bearing capacity and failure modes were obtained. Hysteretic curves, skeleton curves, deformation and ductility coefficient ability of seismic performance of the latticed system columns with RC braces were analyzed and compared with the specimens without braces. Experimental results indicate that good seismic performance can be obtained for the Latticed System Columns with RC braces, and its resistant lateral stiffness increases obviously. For lattice system columns with RC braces the plastic hinges of braces and beams unusually appears in advance, which makes the structure easy to realize the target of seismic design of “strong column weak beam”,however, the lattice system columns without the RC braces do not show such trend.
 
  为探索实现钢筋混凝土框架中的“强柱弱梁”的抗震设计原则,该文设计两个 支撑形式分别为人字形、交叉形的格构化体系柱和一个无支撑的格构化体系柱试件,并 对其进行低周期反复荷载试验。得出格构化体系柱的开裂荷载、极限承载力和破坏形态, 分析带RC支撑的格构化体系柱的滞回曲线、骨架曲线、变形能力、延性等抗震性能, 并和无支撑的格构化体系柱进行对比分析。分析结果表明:带RC支撑的格构化体系柱 的极限承载力、抗侧刚度等抗震性能较无支撑格构化体系柱有明显的提高。在带RC支 撑的格构化体系柱中,支撑和梁往往先于柱子出现塑性铰,使结构容易实现“强柱弱梁” 的抗震设计目标,而不带RC支撑的格构化体系柱却很难实现。
 
  
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