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	Dynamic response analysis of “three-span” construction crossing network based on laser point cloud and BIM technology

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (4) : 52-60.

VIBRATION THEORY AND INTERDISCIPLINARY RESEARCH

Dynamic response analysis of “three-span” construction crossing network based on laser point cloud and BIM technology

LIU Jialiang，FANG Chunhua*，LU Wenqi，GUO Yongyu，CAI Shude，JIANG Quancai

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Abstract

In the construction of "three-span" transmission line tension stringing, once an accident occurs, the towed wire may fall and impact the crossing network below, threatening the safe and stable operation of the crossing object. Therefore, this paper proposes a dynamic response analysis method of "three-span" construction crossing network based on laser point cloud and BIM technology. Firstly, the airborne lidar is used to collect the three-dimensional point cloud data of the "three-span" construction site, and the improved cloth simulation filtering algorithm is used to segment the cross-terrain point cloud data. The high-precision extraction of the tower point cloud data on both sides of the span is realized by using the point cloud spatial dimension feature and the K-Means algorithm. Secondly, according to the extracted point cloud data combined with BIM technology, the reverse modeling of the target equipment and construction environment is carried out. Through the assembly and stacking of different surface objects, the construction spanning network model is built on it. Finally, by simulating the impact collision of the transmission line disconnection on the crossing network, the bearing performance of the crossing network and the dynamic clearance distance between the crossing network and the crossing object are detected when the accident occurs. The results show that this method can analyze the dynamic performance of the crossing network in advance in the actual construction environment, and provide reliable safety guarantee and data support for the crossing construction of transmission lines, which has certain engineering value.

Key words

laser point cloud / "three-span" construction / cloth simulation filtering algorithm(CSF) / BIM technology / collision impact / clearance distance

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LIU Jialiang, FANG Chunhua, LU Wenqi, GUO Yongyu, CAI Shude, JIANG Quancai.

Dynamic response analysis of “three-span” construction crossing network based on laser point cloud and BIM technology [J].

Journal of Vibration and Shock, 2025, 44(4): 52-60

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