本文選題：框架-剪力墻結(jié)構(gòu)　切入點(diǎn)：最優(yōu)化算法　出處：《長(zhǎng)沙理工大學(xué)》2014年碩士論文

【摘要】：框架-剪力墻結(jié)構(gòu)是在框架結(jié)構(gòu)中選擇性的布置剪力墻,屬于典型的雙重抗側(cè)力體系,在水平荷載作用下,如果某一部分受到破壞,則其余部分仍然可以提供足夠的剛度及承載能力。用剪力墻作為結(jié)構(gòu)中主要的抗側(cè)力構(gòu)件,不僅可以為結(jié)構(gòu)提供較大的側(cè)向剛度,而且也可以構(gòu)成靈活自由的使用空間,容易滿足建筑功能的要求。由于框架-剪力墻結(jié)構(gòu)具有較強(qiáng)的適用性,是目前建筑設(shè)計(jì)中常采用的一種結(jié)構(gòu)形式。在實(shí)際工程中,對(duì)于剪力墻的布置主要由設(shè)計(jì)人員根據(jù)自身的工程經(jīng)驗(yàn)來完成的,這樣的布置只是著眼于結(jié)構(gòu)的參數(shù)是否滿足規(guī)范要求,由于很多設(shè)計(jì)人員沒有建立良好的優(yōu)化意識(shí),往往使得結(jié)構(gòu)中布置的剪力墻剛度過大,不僅影響了結(jié)構(gòu)的抗震性能,也使得結(jié)構(gòu)的經(jīng)濟(jì)效益下降。本文主要針對(duì)框架-剪力墻結(jié)構(gòu)中剪力墻的布置剛度進(jìn)行研究,旨在找到經(jīng)濟(jì)性與安全性的平衡點(diǎn),進(jìn)而確定剪力墻的合理剛度。文中探討了確定剪力墻合理剛度的必要性與重要性。當(dāng)設(shè)防烈度較高、基本風(fēng)壓較小時(shí),水平荷載主要為地震作用；當(dāng)設(shè)防烈度較低、基本風(fēng)壓較大時(shí),水平荷載主要為風(fēng)荷載。根據(jù)水平作用力的這兩種情況,分別建立數(shù)學(xué)優(yōu)化模型,選用簡(jiǎn)單有效的最優(yōu)化算法,利用MATLAB編程來求解剪力墻的合理剛度。文中提出當(dāng)優(yōu)化模型的約束條件較多時(shí),可以采用區(qū)分主次的方式來簡(jiǎn)化約束條件。在求解地震作用下框架-剪力墻結(jié)構(gòu)合理剛度的優(yōu)化模型時(shí),采用復(fù)合形法和隨機(jī)方向法分別求解,比較兩種算法的實(shí)用性的同時(shí),也為算法在工程中的應(yīng)用提供參考。最后對(duì)工程實(shí)例進(jìn)行分析,利用文中的方法來確定剪力墻的合理剛度,表明選用的方法是簡(jiǎn)單實(shí)用的,計(jì)算程序可供初步設(shè)計(jì)或剪力墻剛度調(diào)整時(shí)使用。
[Abstract]:The frame-shear wall structure is a typical double lateral force resistant system, which is selectively arranged in the frame structure. Under horizontal load, if a part of the structure is destroyed, Then the rest of the structure can still provide enough stiffness and bearing capacity. Using shear wall as the main anti-lateral force member of the structure, not only can provide the larger lateral stiffness for the structure, but also can constitute a flexible and free space for use. It is easy to meet the requirements of building function. Because of the strong applicability of frame-shear wall structure, it is a kind of structural form commonly used in the present architectural design. The layout of shear wall is mainly completed by the designers according to their own engineering experience. This arrangement only focuses on whether the parameters of the structure meet the requirements of the code, because many designers have not established a good sense of optimization. The shear wall in the structure is just large, which not only affects the seismic performance of the structure, but also reduces the economic benefit of the structure. This paper mainly studies the arrangement stiffness of the shear wall in the frame-shear wall structure. In order to find the balance point between economy and safety, and then determine the reasonable stiffness of shear wall, the necessity and importance of determining reasonable stiffness of shear wall are discussed in this paper. When the fortification intensity is high and the basic wind pressure is small, the paper discusses the necessity and importance of determining the reasonable stiffness of shear wall. The horizontal load is mainly seismic, and when the fortification intensity is low and the basic wind pressure is high, the horizontal load is mainly wind load. According to the two cases of horizontal force, the mathematical optimization model is established, and the simple and effective optimization algorithm is selected. The reasonable stiffness of shear wall is solved by MATLAB programming. The constraint conditions can be simplified by distinguishing primary and secondary factors. When solving the optimal model of the reasonable stiffness of frame-shear wall structures under earthquake, the composite method and the random direction method are used to solve them respectively, and the practicability of the two algorithms is compared. It also provides a reference for the application of the algorithm in engineering. Finally, the paper analyzes the engineering example and uses the method in this paper to determine the reasonable stiffness of the shear wall. It shows that the method is simple and practical. The calculation program can be used for preliminary design or stiffness adjustment of shear wall.
【學(xué)位授予單位】：長(zhǎng)沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TU398.2

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