Pedestrian evacuation in a room environment is critical to architectural design, safety management and code development. The complexity of this issue is further increased in the presence of multiple obstacles, which may affect pedestrian dynamics and evacuation pattern. Most of previous studies on the room evacuation in the presence of multiple obstacles do not account for pedestrian's turning or rotational behavior, this paper aims to address this limitation. For this purpose, a previously developed agent-based model considering agent's turning behavior is extended in the context of room evacuation. Several improvements are made to this model, including: a procedure for generating feasible evacuation routes based on concepts of visible regions and accessible nodes; a deterministic approach based on the estimated evacuation time to select final evacuation route from feasible ones; and reformulation of agent's attractive potential to consider its movement along evacuation route. Simulation results with the proposed agent-based model are compared with published experimental data, and reasonable agreement can be observed. It is concluded that the proposed agent-based model is suitable for studying room evacuation problem in the presence of multiple obstacles under relatively low density scenario.

房间环境中的行人疏散对于建筑设计、安全管理和代码开发至关重要。在存在多个障碍物的情况下，这个问题的复杂性进一步增加，这可能会影响行人动态和疏散模式。先前关于存在多个障碍物的房间疏散的大多数研究都没有考虑行人的转弯或旋转行为，本文旨在解决这一限制。为此，在房间疏散的背景下扩展了先前开发的基于代理的模型，该模型考虑了代理的转向行为。对该模型进行了多项改进，包括： 基于可见区域和可访问节点概念生成可行疏散路线的程序；基于估计疏散时间的确定性方法，从可行路线中选择最终疏散路线；并重新制定代理的吸引力潜力，以考虑其沿疏散路线的移动。将所提出的基于代理的模型的模拟结果与公开的实验数据进行比较，可以观察到合理的一致性。得出的结论是，所提出的基于代理的模型适用于研究在相对低密度场景下存在多个障碍物的房间疏散问题。