What are the difficulties in lightning protection construction of ancient buildings?

Compared with modern buildings, the geographical environment and geological conditions around most ancient buildings are not ideal, and the shape and structure of buildings are also complicated. Therefore, the construction and installation of lightning protection devices for ancient buildings has special difficulties, and the lightning protection effect is also worse than that of modern buildings. The main difficulties include: First, the spacing of the lightning rods (belts) of the ancient buildings leading down the line, sometimes it is difficult to meet the requirements of lightning protection specifications. Second, many ancient buildings are built in the mountains and mountains, and the surface is mostly rock. It is difficult to meet the requirements of the grounding resistance. Third, some ancient buildings have relatively large pedestals and are surrounded by thick stone steps. It is difficult to make grounding bodies and grounding wires. Fourth, some ancient buildings have been in disrepair for a long time, bricks and tiles are broken, and coffins are rotten. It is difficult to install lightning protection devices on them.

It is worth emphasizing that lightning protection pins, lightning protection belts, down conductors and grounding bodies are required for the protection of direct lightning strikes on buildings. However, the installation and installation of these objects, if not ingeniously integrated with the ancient structures and shapes, will directly affect the artistic style of ancient buildings. The lightning protection belt shall be laid on the roof. Under the premise of complying with the lightning protection technical standards, the lightning protection belt shall be designed as the contour line of the ancient building roof. The material selection shall be consistent with the color tone of the roof. For example, at present, the support frame of the lightning protection belt is usually fixed on the tile and the ridge by using a U-shaped card. However, due to the degree of firmness and the construction and installation process, the lightning protection belt is easy to fall, and the gray tile at the fixed position of the U-shaped card is likely to cause different degrees. damage. Industry experts suggest that standards should be established as soon as possible to design a lightning rod (belt) fixing method that does not cause damage to ancient building roofing.