Mansour Dina M, Ebid Ahmed M, Mahdi Ibrahim M, Mahdi Hisham A, Elkadi Anwar F
Department of Structural Engineering and Construction Management, Future University in Egypt, Egypt.
CEO Nile Engineering Consulting Bureau (NECB), Egypt.
Heliyon. 2024 Feb 8;10(4):e26064. doi: 10.1016/j.heliyon.2024.e26064. eCollection 2024 Feb 29.
The structural progress of bridges in conjunction with efficiency has gained researchers' attention in the last few decades. Structures optimization applying mathematical analysis is utilized to achieve sustainability in the design and construction of bridges. Despite the extensive research in this area of knowledge, further structural optimization development needs to be developed. The main goal of this research is to develop a decision support system (DSS) that selects the optimum superstructure configuration for highway bridges, considering financial and technical parameters. The most common structural systems in the longitudinal and transverse directions of bridges are considered in this research. Simple and continuous spans are included in the longitudinal direction, while open and closed sections for the transverse direction. Different construction materials are considered as well, like reinforced concrete, pre-stressed concrete, steel sections, and composite sections, to achieve a wide diversity of alternatives. The developed DSS was illustrated graphically as a map for the optimum superstructure configuration for certain span and span to depth ratio combinations. These different configurations obtained from the DSS were mapped three times. The first was based on direct cost only, the second on construction time only, and the third on the total cost of each alternative. Eventually, the DSS was verified using collected case studies and proposed a convenient selection of bridge superstructure configurations within the considered range of span dimensions.
在过去几十年中，桥梁结构的发展与效率提升引起了研究人员的关注。运用数学分析进行结构优化，以实现桥梁设计与建造的可持续性。尽管在这一知识领域已有广泛研究，但仍需进一步发展结构优化。本研究的主要目标是开发一个决策支持系统（DSS），该系统在考虑财务和技术参数的情况下，为公路桥梁选择最优的上部结构配置。本研究考虑了桥梁纵向和横向最常见的结构体系。纵向包括简支和连续跨度，横向包括开口和闭口截面。同时还考虑了不同的建筑材料，如钢筋混凝土、预应力混凝土、钢截面和组合截面，以实现多种选择。所开发的DSS以图形方式展示为特定跨度和跨深比组合的最优上部结构配置图。从DSS获得的这些不同配置被绘制了三次。第一次仅基于直接成本，第二次仅基于施工时间，第三次基于每个方案的总成本。最终，利用收集的案例研究对DSS进行了验证，并在所考虑的跨度尺寸范围内提出了方便的桥梁上部结构配置选择。
