基于加固效费比的砌体结构抗震加固方案优选方法研究

综合考虑砌体结构层数、既有结构材料强度、震损程度、结构加固抗震能力提升及对应修复加固费用，建立了针对砌体结构的加固效费比模型。以砌体结构加固效费比模型为基础，兼顾施工工期、施工技术、耐久性和对使用功能影响等因素，结合理想点法建立了一套多目标的砌体结构抗震加固方案优选新方法。有针对性地分析了结构层数、既有材料强度、震损程度等因素对加固方案决策影响。结果表明:提出的优选方法能客观地反映既有结构基本信息对方案决策的影响；针对一般砌体加固工程，可结合主观意愿和客观条件，科学、高效地给出优选加固方案，为加固设计实施提供参考依据。

THE OPTIMAL SELECTION METHOD OF SEISMIC STRENGTHING SCHEME FOR MASONARY BUILDINGS BASED ON COST-EFFECTIVE RATIO

The model of efficiency-cost ratio for after-shock masonry strengthening is established, considering the number of stories, material strength, seismic damage, the promotion of seismic capacity, and the engineering cost. Based on the model, the optimal selection method for masonry strengthening is proposed, combining the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS), including the construction time, technology, durability, and the impact on architectural function. Comparative cases are performed to study the influence on the optimal selection results by the number of stories, by the material strength, and by the seismic damage level. It is concluded that: the proposed method can reflect the influence on the strengthening decision making by the basic structural conditions, and effectively provide a scientific and reliable scheme for masonry buildings, combing the subjective and objective factors during the preliminary design stage.