钢筋桁架式夹芯混凝土板优化设计与受力性能分析-结构工程专业论文.docxVIP

摘要 钢筋桁架式夹芯混凝土板是一种新型的楼板结构，它具有重量轻、强度 高、施工装配化、产品工厂化的特点，适用于多高层钢结构住宅体系。该楼 板符合目前钢结构住宅楼板体系的发展趋势，是值得大力推广的楼板形式。 本文从研究钢结构住宅的楼板体系出发，对国内外现阶段钢结构住宅的 各种楼板形式进行介绍，并将钢筋桁架式夹芯混凝土板与它们进行综合对比。 在钢结构桁架设计的理论基础上，对钢筋桁架式夹芯混凝土的受力骨架一钢 筋桁架进行设计，确定钢筋桁架的形式，分析包括钢筋直径、桁架高度、支 撑桁架榀数、桁架截面形式等影响钢筋桁架性能的主要参数，并运用灰局势 决策对钢筋桁架进行优化选型，确定钢筋桁架的最优形式。 研究钢筋桁架式夹芯混凝土板的整体受力性能，进行开裂状态以及极限 状态的内力分析与理论计算。运用两种不同的方法推导出钢筋桁架式夹芯混 ???土板的开裂弯矩公式，提出开裂弯矩的简化公式，将三者进行对比分析。 结合工程实际，推导出极限弯矩的理论公式与简化公式。建立钢筋桁架式夹 芯混凝土板的有限元模型，得出开裂弯矩与极限弯矩的有限元分析值，将其 与理论公式值进行对比与验证。并且通过对钢筋桁架式夹芯混凝土板模型在 受弯状态下的分析，得出较为合理的板型。 最后，通过对钢筋桁架式夹芯混凝土板方案、叠合板方案、组合板方案、 现浇板方案各方面性能进行了比较，得出由钢筋桁架式夹芯混凝土板为楼板 体系的钢结构住宅在经济成本、受力性能、抗震性能、变形性能方面都具有 一定的优势。 关键词钢筋桁架，桁架设计与优化选型，开裂弯矩，极限弯矩，有限元 分析  ABSTRACT Truss—type sandwich reinforced concrete slab is a new type of floor structure． It has the characteristics of light weight，high strength，assembly of construction and industrial product，SO it is applicable to the steel residential structure system with more and high-rise floors．Steel slab is consistent with the current development trend of the residential floor system，and it will be a promote floor structure． Starting from the floor structure system of steel residential structure，floor forms of steel residential structure system at home and abroad at present were introduced and studied in this paper,and between these floor forms and truss-ty’pe sandwich reinforced concrete slab，a comprehensive comparison was made．Based on the design theories of steel truss，the force skeleton of truss—type sandwich reinforced concrete--steel truss was designed，the form of steel truss was determined．The main parameters，including bar diameter,height of truss，Pin number of supporting truss，section form of truss and SO on，which have influence on the behavior of steel bar truss were analyzed．Moreover,grey situation decision-making was used to optimize the selection of steel truss and the optimal form of steel trusses was fixed． The whole structural performance of truss—type sandwich reinforced concrete slab was studied and