Recent catastrophic events in the Philippines (e.g., the 2013 Typhoon Haiyan) have highlighted that ageing cultural heritage (CH) assets are especially vulnerable to typhoon-induced extreme wind. Non-engineered CH roofs have been recognized as the most vulnerable component in the building envelope due to wind uplift, often resulting in large economic losses and disruption for those assets. Effective prioritization of high-vulnerable structures is a key to effective risk mitigation and resilience-increasing strategies.

This paper introduces a simulation-based approach for non-engineered CH roof fragility analysis (i.e., to assess the likelihood of different levels of roof damage over a range of wind hazard intensities) and risk assessment. In the proposed approach, two common failure modes are considered, corresponding to (first) roof-fastener pullout and roof-panel pullover. The overall aim is to identify the highest-risk candidate assets and prioritize more detailed data collection campaigns and structural assessment procedures (e.g., properly accounting for load redistribution and fastener failure progression), and ultimately to plan further repair/strengthening measures.

An illustrative application of the proposed procedure is presented with reference to eight priority CH assets in Bohol, the Philippines. The analysis results indicate that, especially for roof panels supported by wood-type purlins, pullout fragility/risk can be significantly high, while the pullover one is generally lower.

菲律宾最近发生的灾难性事件（例如，2013年台风“海盐”）突出表明，老化的文化遗产（CH）资产特别容易受到台风引发的极端风的影响。由于风力上升，非工程CH屋顶被认为是建筑围护结构中最脆弱的部分，通常会造成巨大的经济损失并破坏这些资产。有效确定高脆弱性结构的优先级是有效降低风险和提高应变能力策略的关键。

本文介绍了一种基于模拟的方法，用于非工程CH屋顶的脆弱性分析（即，评估一系列风灾强度下不同程度的屋顶破坏的可能性）和风险评估。在提出的方法中，考虑了两种常见的失效模式，分别对应于（第一）车顶紧固件拉出和车顶面板套穿。总体目标是确定风险最高的候选资产并确定更详细的数据收集活动和结构评估程序的优先级（例如，适当考虑负载的重新分配和紧固件故障的进展），并最终计划进一步的维修/加强措施。

参照菲律宾保和省的八项优先CH资产，介绍了拟议程序的说明性应用。分析结果表明，特别是对于由木型pur条支撑的屋顶板，拉拔的脆弱性/风险可能很高，而拉拔的脆弱性/风险通常较低。