Current delay analysis techniques assume that there is only one logical sequence of activities in a project. However, in a real construction project, the relationship of activities can be demonstrated by both fixed and soft logic. Fixed logic requires activities to be executed in a specific order, whereas soft logic allows activities to be executed in various orders.

Due to the existence of soft logic and the contractor's obligation to mitigate delays, it is necessary to update the logic to calculate Extension of Time (EOT). However, when soft logic is present in a schedule, manual updates are time-consuming and error-prone. To facilitate soft logic updates, several models have been proposed, however, these methods only update soft-logics within activities of the same work item, rather than project-wide.

To overcome the limitations of the previous research, this paper proposes an algorithm to update schedules according to delay events project-wise. Furthermore, the proposed model has been verified using practical cases, demonstrating a successful way of applying this model to update schedules based on delay events, allowing EOT to be calculated automatically as well as more accurately and reasonably.

当前的延迟分析技术假设项目中只有一个逻辑活动序列。但是，在实际的建设项目中，活动之间的关系既可以用固定逻辑也可以用软逻辑来表示。固定逻辑要求活动以特定顺序执行，而软逻辑允许活动以各种顺序执行。

由于软逻辑的存在和承包商减轻延迟的义务，有必要更新逻辑以计算延长时间（EOT）。但是，当计划中存在软逻辑时，手动更新既耗时又容易出错。为了促进软逻辑更新，已经提出了几种模型，但是，这些方法只更新同一工作项的活动内的软逻辑，而不是项目范围内的。

为了克服先前研究的局限性，本文提出了一种根据项目延迟事件更新时间表的算法。此外，所提出的模型已经通过实际案例进行了验证，展示了将该模型应用于基于延迟事件更新时间表的成功方法，允许自动计算EOT，并且更加准确和合理。