结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
6期
10-17
,共8页
预应力结构%小比例模型%相似设计方法%结构效应
預應力結構%小比例模型%相似設計方法%結構效應
예응력결구%소비례모형%상사설계방법%결구효응
pre-stressed structure%small-scale model%similitude design method%structural effect
以某预应力大悬挑混凝土框架-剪力墙结构为例,在现有结构模型相似理论的基础上,对预应力结构小比例模型设计方法进行了研究。该模型比例较小,同时满足模型整体结构和预应力构件的相似要求是对模型设计的较大挑战;提出基于“预应力作用效应”相似的设计方法,对结构悬挑部位的预应力构件进行相似设计,即用量纲分析法获得模型整体结构相似常数,进而推导预应力构件作用效应的相似方法,进行该结构小比例预应力构件设计。通过实例设计分析,证明该设计方法的合理性和有效性。
以某預應力大懸挑混凝土框架-剪力牆結構為例,在現有結構模型相似理論的基礎上,對預應力結構小比例模型設計方法進行瞭研究。該模型比例較小,同時滿足模型整體結構和預應力構件的相似要求是對模型設計的較大挑戰;提齣基于“預應力作用效應”相似的設計方法,對結構懸挑部位的預應力構件進行相似設計,即用量綱分析法穫得模型整體結構相似常數,進而推導預應力構件作用效應的相似方法,進行該結構小比例預應力構件設計。通過實例設計分析,證明該設計方法的閤理性和有效性。
이모예응력대현도혼응토광가-전력장결구위례,재현유결구모형상사이론적기출상,대예응력결구소비례모형설계방법진행료연구。해모형비례교소,동시만족모형정체결구화예응력구건적상사요구시대모형설계적교대도전;제출기우“예응력작용효응”상사적설계방법,대결구현도부위적예응력구건진행상사설계,즉용량강분석법획득모형정체결구상사상수,진이추도예응력구건작용효응적상사방법,진행해결구소비례예응력구건설계。통과실례설계분석,증명해설계방법적합이성화유효성。
Taking a large-span, cantilever pre-stressed structure as an example, the similitude law for its small-scaled model was studied based on the existed model experimental similitude theory. Generally, for the pre-stressed members, similarity expressions of the global structure are not compatible to the ones of the specif-ic local components. Therefore, the innovative similitude law and design procedures were proposed according to the cantilever pre-stressed structural behavior. Corresponding similitude constants were thus achieved. To verify the effectiveness and rationality of the aforementioned structures similitude law, the design of a small-scaled model of a pre-stressed concrete structure were accomplished and evaluated.