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就概念设计在结构设计中的应用做一探讨,介绍了概念设计的内涵,对结构概念设计中的协同工作、结构抗震概念设计和结构整体性能控制等方面进行了阐述,指出结构概念设计是先进设计思想的关键,正确的结构概念设计可使结构更安全有效、经济合理。 相似文献
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以一个实际桁架为例,利用ANSYS软件的优化设计模块,并采用APDL语言编制用户程序,在两种不同设计工况下分别对其进行了结构优化,结果表明运用APDL进行优化设计可以明显提高设计质量和效率,具有广泛应用前景。 相似文献
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从现浇混凝土空心楼盖在我国的应用情况出发,结合自己亲身接触过的两个工程实例,对现浇混凝土空心楼盖在结构优化中的应用进行了简要的分析,指出现浇混凝土空心楼盖具有自重轻、跨度大、施工速度快等优点,值得推广。 相似文献
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对型钢混凝土构造设计提出优化方案,指出优化设计应充分考虑柱—梁节点受力性能和方便施工;分析了全型钢混凝土框架体系的优越性;提出确定型钢混凝土构件合理含钢率的原则,以指导类似工程的设计。 相似文献
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钢筋混凝土剪力墙高层住宅已成为城市主要建筑结构类型。本文阐述了高层住宅楼结构优化设计的方法和途径,并结合工程实例,进行具体的说明论证。结构设计的优化不是以牺牲建筑结构安全度和抗震性能来求得经济效益的。结构的优化不仅在结构本身,而且涵盖建筑的其他方面,如选择合适的建筑方案,提高建筑空间效率和改善建筑的性价比等。 相似文献
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上海陆海空大厦在停建数年后,业主委托江欢成事务所对结构进行优化设计。原设计沿用常规做法,大体上能满足规范要求,但不够理想,例如柱子截面较大,自振周期较长,地震作用时层间位移角也较大,补桩太多等等。本优化设计不但取得了十分明显的经济效益,而且大大改善了室内空间环境。东西塔楼共44根柱子,拔掉了16根,柱子断面进一步减小,核心筒内部剪力墙厚度进一步减小,楼盖厚度进一步减小,节约混凝土8400m3,增加使用面积约1300m2。取消了主楼和裙房之间的沉降缝,减少补桩208根。综合经济效益约2000万元人民币。 相似文献
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本文首先总结了结构设计对工程造价的影响,接着阐述了价值工程的基本理论及其分析方法,最后针对实际工程实例,运用价值工程方法对设计方案进行评价分析,分析结果表明:价值工程在结构设计方案评选中能有效地选择出最优方案。 相似文献
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Development of an optimisation method suited to structural engineering design applications is described briefly. The method is essentially a conventional direct-search technique with exterior penalty constraints but uses variable penalty factors during the search to improve mobility between feasible regions. The method is illustrated by application to design of a composite box-girder footbridge, employing eight design variables and nineteen constraints, and the results are used to demonstrate the importance of considering sub-optima as well as the global optimum. The usefulness of univariant parameter/cost relationships in the region of global and local optimum points, derived as an intrinsic part of the optimisation process, is also stressed. 相似文献
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In order to design a steel member subjected to a bending moment and an axial load, there are an infinite number of possible solutions of I- or H‐steel cross-sections, the doubly-symmetric solution being just one of them. This paper presents a procedure to obtain the optimal steel cross-section from the infinite number of possible solutions. The process is based on the Reinforcement Sizing Diagrams employed in reinforced concrete strength design. The procedure looks for any type of solution regarding compact or non-compact steel sections. All aspects related to local instabilities are taken into account, as well as some special considerations in order to address the global instabilities associated with the slenderness of the steel element. 相似文献
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概念设计在结构设计中的应用 总被引:2,自引:4,他引:2
简述了概念设计的定义,针对概念设计在结构设计中的重要性,探讨了如何将概念设计原理运用到建筑结构设计中,并且提倡采用概念设计思想来提高结构工程师的创造性,推动结构设计的发展。 相似文献
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大学生结构设计竞赛是培养学生动手实践能力和创新精神的重要平台。以2018年第九届吉林省大学生结构设计竞赛赛题为例,阐述了模型结构设计过程,并对参赛模型进行了结构选型,模型结构分析及优化,为今后的比赛提供借鉴。 相似文献
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《Building and Environment》2005,40(11):1512-1525
Since buildings have considerable impacts on the environment, it has become necessary to pay more attention to environmental performance in building design. However, it is a difficult task to find better design alternatives satisfying several conflicting criteria, especially, economical and environmental performance. This paper presents a multi-objective optimization model that could assist designers in green building design. Variables in the model include those parameters that are usually determined at the conceptual design stage and that have critical influence on building performance. Life cycle analysis methodology is employed to evaluate design alternatives for both economical and environmental criteria. Life cycle environmental impacts are evaluated in terms of expanded cumulative exergy consumption, which is the sum of exergy consumption due to resource inputs and abatement exergy required to recover the negative impacts due to waste emissions. A multi-objective genetic algorithm is employed to find optimal solutions. A case study is presented and the effectiveness of the approach is demonstrated for identifying a number of Pareto optimal solutions for green building design. 相似文献
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如何使建筑最大程度的利用风,是建筑创作中自然风设计的主要目的。首先分析当地的气候类型,充分利用热压通风、风压通风、捕风器和地冷空调,改善室内物理环境,解决功能与能耗污染平衡问题。主要根据大量文献和绿色建筑方案设计,从热压通风、风压通风等方法阐述湿热地区通风策略。 相似文献