本文選題：變電站屋面 + 設備基礎��； 參考：《東南大學》2015年碩士論文

【摘要】：重型電氣設備放置于變電站屋頂?shù)淖龇?可以節(jié)省大量空間,是建設節(jié)能、環(huán)保、智能、緊湊型綠色變電站的體現(xiàn),有利于達到“兩型一化”變電站建設的要求,符合國家綠色工業(yè)建筑的需求。這種功能區(qū)疊放布置的做法有著廣闊前景,然而屋面防水問題一直沒有得到妥善解決,導致該做法沒有大規(guī)模推廣。通過對龍馬220KV變電站、云蒙220KV變電站和東明220KV變電站屋面防水技術的調研與分析,指出變電站建筑承載重型設備屋面滲漏的主要原因。本文以河北武強220KV變電站為工程背景,針對調研分析容易發(fā)生滲漏的主要部位和主要原因,著重對其屋面混凝土結構的抗裂性能、屋面建筑構造防水及細部節(jié)點防水進行研究與探討。利用大型通用有限元軟件MIDAS建立了計算分析模型,分別對施工階段和使用階段的河北武強220KV變電站屋面混凝土結構進行有限元分析,找出屋面應力集中及變形較大的薄弱部位。根據(jù)分析結果,設計階段,通過增強配筋和優(yōu)化構造鋼筋的布置,增強屋面混凝土結構的極限抗拉能力；施工階段通過調整混凝土配合比和改善混凝土施工方式,減少混凝土的收縮,以提高屋面混凝土的抗裂抗?jié)B性能。為提高屋面復合防水層的防水性能,設計了6個試件進行“升溫—淋水—靜置”循環(huán)試驗,通過溫度變形分析,防水層(由下至上)采用“單組分聚氨酯涂料防水層+聚合物防水砂漿層+熱塑性聚烯烴防水卷材層”的組合形式,相互間變形協(xié)調性能最好。同時,對屋面設備基礎及預埋螺栓等細部節(jié)點部位進行深化設計,以確保屋面整體防水的可靠性；對主要防水層的施工方式進行優(yōu)化,特別強調聚氨酯涂膜防水層、聚合物砂漿找平層和熱塑性聚烯烴高分子卷材防水層相互之間的粘結處理方式以及施工間隔時間的重要性。最后,對本文的研究內容和主要成果進行了總結,從屋面混凝土結構的設計、施工和屋面建筑構造整體防水的設計、施工兩個方面,提出變電站建筑承載重型設備屋面綜合防水技術的改進建議。
[Abstract]:The method of placing heavy electrical equipment on the roof of substation can save a lot of space. It is the embodiment of energy saving, environmental protection, intelligence and compact type green substation, which is helpful to meet the requirements of "two types and one transformation" substation construction. Meet the needs of national green industrial buildings. This method of superposition of functional areas has a broad prospect, but the problem of roof waterproofing has not been properly resolved, resulting in no large-scale promotion of the practice. Based on the investigation and analysis of roof waterproofing technology in Longma 220KV substation, Yunmeng 220KV substation and Dongming 220KV substation, the main causes of roof leakage in substation building bearing heavy equipment are pointed out. Based on the engineering background of Hebei Wuqiang 220KV Substation, this paper focuses on the crack resistance of the concrete structure of the roof in view of the investigation and analysis of the main parts and main causes of leakage. The waterproofing of roof structure and detail node waterproofing are studied and discussed. The calculation and analysis model of the roof concrete structure of Hebei Wuqiang 220KV Substation was established by using the large scale general finite element software MIDAS. The weak parts of the roof stress concentration and deformation were found out by the finite element analysis of the concrete structure of Wuqiang 220KV Substation in Hebei Province. According to the results of the analysis, in the design stage, the ultimate tensile capacity of the roof concrete structure is enhanced by strengthening the reinforcement and optimizing the arrangement of the structural reinforcement, while in the construction stage, the concrete mix ratio is adjusted and the concrete construction mode is improved. Reduce the shrinkage of concrete to improve the crack and seepage resistance of roof concrete. In order to improve the waterproof performance of the composite waterproof layer of roof, six specimens were designed to carry out the cyclic test of "temperature rise, water leaching and standing", and the temperature deformation analysis was carried out. The waterproof layer (from bottom to top) adopts the combination form of "one component polyurethane coating waterproof mortar layer, polymer waterproof mortar layer", and the deformation coordination property among each other is the best. At the same time, the foundation of roof equipment and the parts of detail joints such as embedded bolts are further designed to ensure the reliability of the whole roof waterproofing, and the construction methods of the main waterproof layer are optimized, with special emphasis on the polyurethane coating waterproof layer, The bonding treatment between polymer mortar leveling layer and thermoplastic polyolefin polymer roll waterproof layer and the importance of construction interval. Finally, the research contents and main achievements of this paper are summarized, from two aspects: the design of roof concrete structure, the design of construction and the whole waterproof structure of roof building, the construction of the concrete structure, the construction of the whole waterproofing structure, and the construction of the concrete structure. Suggestions for improvement of comprehensive waterproof technology for heavy duty equipment roof of substation building are put forward.
【學位授予單位】：東南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TU761.11

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