Performance modelling of precast composite wall systems

可以制造预制混凝土构件以满足许多施工约束，包括几何图形和建筑洞口。Burnco MFG开发了一种创新的复合材料预制系统。称为薄壳预制件(TSP)的公司。该系统由开口腹板、轻钢立柱组成，嵌入薄而轻筋的混凝土墙板中。该产品具有强度高、施工速度快、性价比高、设计灵活、热效率高、耐久性好、适用范围广、消声效果好等特点。Burnco TSP用于楼板、屋顶、基础墙、承重外墙和内墙以及外墙覆层。应用范围包括低层住宅、中高层建筑、 不发达或自然灾害恢复地区的商业、工业和零售建筑以及低成本住房。虽然这种组合预制系统提供了许多结构和建筑功能，但TSP作为侧向力(风和地震)抵抗元件的能力尚不清楚。目前，在实施该系统的结构中，TSP的侧向力贡献没有考虑在内，因此需要一个替代系统来承受任何侧向荷载。因此，这一产品的全部结构性好处没有得到实现。 本建议的目的是确定Burnco预制复合墙板作为剪力墙体系的抗震性能。这将通过使用先进的非线性有限元模型和初步实验计划进行数值模拟来实现。随着加拿大建筑成本的增加，可以提供多种功能(结构和建筑)的创新系统，如TSP，被定位为改变建筑业。这样的系统将提供具有竞争力的成本、易于实施和设计应用程序的灵活性。

Precast concrete elements can be fabricated to satisfy many construction constraints including geometry and building openings. An innovative composite precast system was developed by Burnco MFG. Inc. known as Thin Shell Precast (TSP). The system consists of open-web, light-gauge steel studs that are embedded into a thin, lightly reinforced concrete wall panel. This product provides strength, rapid construction, cost-effectiveness, design flexibility, thermal efficiency, long-term durability, accommodation of utilities, and acoustic attenuation. The Burnco TSP is used for floor slabs, roofs, foundation walls, load-bearing exterior and interior walls, and exterior cladding. Applications include low-rise housing, mid- and high-rise buildings, commercial, industrial and retail buildings, and low-cost housing in underdeveloped or natural disaster recovery regions. While this composite precast system provides a number of structural and architectural functions, the capacity of the TSP as a lateral force (wind and earthquake) resisting element is unknown. Currently, the lateral force contribution of the TSP is not accounted for in structures where the system is being implemented, and an alternate system is required to sustain any lateral loading. Therefore, the full structural benefits of this product are not being realized. The objective of this proposal is to establish the seismic performance of the Burnco precast composite wall panels as a shear wall system. This will be achieved through numerical modelling using advanced nonlinear finite element models and a preliminary experimental program. With increasing construction costs in Canada, innovative systems, such as the TSP, that can provide multiple functions (structural and architectural) are positioned to change the construction industry. Such systems will provide competitive costs, ease of implementation and flexibility in design applications.