Forensic Evaluation of Historic Shell Structure: Development of In-Situ Geometry

15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII) Pub Date : 1900-01-01 DOI:10.23967/wccm-apcom.2022.054

J. Schultz, K. Springer, J. Roberson, J. Carroll, M. Hegbloom

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Abstract

. When completed in 1961, the roof of St. Charles Church became the largest unbalanced hyperbolic paraboloid structure in the world and the only shell structure in Spokane, WA. Situated on an 8-acre site on the north side of the city, St. Charles is a modernist structure designed through partnership of Funk, Molander & Johnson and architect William C. James. This asymmetric structure is over 45.72m (150ft) and utilizes folded edge beams that taper from 1067mm (42in) at the base to a 76.2mm (3in) thickness at the topmost edge using regular strength reinforcing steel and concrete. The novelty of the shell structure serves both architectural and structural design criteria by delivering a large, uninterrupted interior sanctuary space in materially and economically efficient manner. Having previously completed an initial analysis of the structure, now, 60 years later, a complete structural forensic evaluation of the shell has been conducted using full point cloud laser scanning to

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历史贝壳结构的法医鉴定:原位几何学的发展

．圣查尔斯教堂的屋顶于1961年完工，成为世界上最大的非平衡双曲抛物面结构，也是华盛顿州斯波坎市唯一的壳结构。圣查尔斯位于城市北侧占地8英亩的土地上，是一座现代主义建筑，由Funk, Molander & Johnson和建筑师William C. James合作设计。这个不对称的结构超过45.72米(150英尺)，利用折叠的边缘梁，从底部的1067毫米(42英寸)到顶部边缘的76.2毫米(3英寸)厚度，使用常规强度的钢筋和混凝土。壳结构的新颖性满足了建筑和结构设计标准，以材料和经济高效的方式提供了一个大的、不间断的内部庇护空间。在之前完成了对结构的初步分析之后，现在，60年后，对外壳进行了完整的结构法医评估，使用全点云激光扫描

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15th World Congress on Computational Mechanics (WCCM-XV) and 8th Asian Pacific Congress on Computational Mechanics (APCOM-VIII)

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