科技通报
科技通報
과기통보
BULLETIN OF SCIENCE AND TECHNOLOGY
2015年
4期
16-18
,共3页
钢筋混凝土%配比%土建造价%抗震强度
鋼觔混凝土%配比%土建造價%抗震彊度
강근혼응토%배비%토건조개%항진강도
reinforced concrete%proportioning%construction cost%shock strength
研究钢筋混凝土框架建筑结构的工程造价约束与建筑体抗震强度关系模型,设计最佳工程造价与抗震强度关系配比,对提高建筑物的抗震能力,降低土建造价各项费用具有重要意义。传统模型构建中,在给定建筑材料配比总可靠度条件下进行框架结构优化设计,没考虑框架结构的多阶段决策离散变量,导致分析精度和配比不合理。提出一种基于决策约束的框架建筑体的造价约束与抗震强度关系模型,设计典型的高层框架建筑体结构,优化框架建筑体的梁、柱截面尺寸选材,得到高层框架建筑体的造价约束横向计算单元模型。通过多阶段决策约束算子,得到造价约束下的最大可靠度约束函数。实验分析得出,每平方米造价增加比例不超过5.3%,房屋抗震设防水准可提高一个等级,通过模型构建,优化建筑配比,减少成本开支的同时提高了建筑质量。
研究鋼觔混凝土框架建築結構的工程造價約束與建築體抗震彊度關繫模型,設計最佳工程造價與抗震彊度關繫配比,對提高建築物的抗震能力,降低土建造價各項費用具有重要意義。傳統模型構建中,在給定建築材料配比總可靠度條件下進行框架結構優化設計,沒攷慮框架結構的多階段決策離散變量,導緻分析精度和配比不閤理。提齣一種基于決策約束的框架建築體的造價約束與抗震彊度關繫模型,設計典型的高層框架建築體結構,優化框架建築體的樑、柱截麵呎吋選材,得到高層框架建築體的造價約束橫嚮計算單元模型。通過多階段決策約束算子,得到造價約束下的最大可靠度約束函數。實驗分析得齣,每平方米造價增加比例不超過5.3%,房屋抗震設防水準可提高一箇等級,通過模型構建,優化建築配比,減少成本開支的同時提高瞭建築質量。
연구강근혼응토광가건축결구적공정조개약속여건축체항진강도관계모형,설계최가공정조개여항진강도관계배비,대제고건축물적항진능력,강저토건조개각항비용구유중요의의。전통모형구건중,재급정건축재료배비총가고도조건하진행광가결구우화설계,몰고필광가결구적다계단결책리산변량,도치분석정도화배비불합리。제출일충기우결책약속적광가건축체적조개약속여항진강도관계모형,설계전형적고층광가건축체결구,우화광가건축체적량、주절면척촌선재,득도고층광가건축체적조개약속횡향계산단원모형。통과다계단결책약속산자,득도조개약속하적최대가고도약속함수。실험분석득출,매평방미조개증가비례불초과5.3%,방옥항진설방수준가제고일개등급,통과모형구건,우화건축배비,감소성본개지적동시제고료건축질량。
The structure model of reinforced concrete frame building eng ineering cost constraint and relationship building?seismic intensity is researched, the optimal design of project cost and seismic intensity ratio, to enhance the capacity build?ing of the earthquake, has the vital significance to reduce the cost of construction cost. In the traditional model, optimiza?tion of frame structure design in a given building material general reliability conditions, not considering the multi-stage de?cision frame structures with discrete variables, cause analysis precision and not reasonable ratio. A cost constraint and the relationship between seismic intensity model framework for building decision constraints based on the body, frame building structure design of typical optimization framework architecture, beam column section size, material, cost constrained trans?verse calculation unit models of tall frame buildings body. By the multistage decision operator, to get the maximum reliabili?ty constraint function cost constraints. The experimental analysis is taken, it shows that the construction costs per square can increase the proportion not more than 5.3%, seismic fortification level can improve a grade, it can optimize the construc?tion ratio, reduce the cost and improve the quality of the building.