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Keywords: building electrical structure of lightning

in engineering design, many designers are there such an understanding: Building Electrical professions involved small diameter pipeline, a small number of simple installation, and lightning protection grounding and other less demanding, so the electrical structure of a professional with professional and often overlooked, it is not. With modern electronics industry and the rise of large-scale intelligent building, building electrical design will be involved in various types of pipelines, more and more of the lightning, protection against electromagnetic pulse and other requirements are also increasing, Therefore, as part of equipment design, construction and other professional electrical design and structure, especially the coordination between professions, with appropriate attention should be given. Based on this, the paper will be divided into several aspects of electrical design and construction of a number of issues associated with the structure to be discussed. Chinese papers Union editing. One, the use of structural steel for building lightning protection and grounding in the priority should be reinforced by the structure of the building itself or the steel and other natural metals, as part of lightning protection devices, makes the premise of ensuring safety and reliability can be balanced economy. Therefore, how to use the building design of the metal conductor is the important issue of mine. 1, roof structure and air terminals of modern architecture in addition to the pursuit of a variety of lines of the facade, but also seeks to shape the top of the building changes. The new shell, such as extensive use of double-curved truss roof can no longer simply be divided into flat roof and sloping roof, which caused some difficulties to the lightning protection design. In addition to the design should be also very necessary. Crack for water considerations, general use of cast concrete roof structure panels, the steel reinforced by the composition of the upper and lower reinforcement, reinforcement more dense, more connections, and plate steel banding steel beams were connected with the formation of access road . Highlight the tower roof, stairs, etc. were also constructed by reinforced concrete column or columns and connected to the lower structure. Therefore, when used as air terminals reinforced building itself when the structural steel connections in the critical areas, such as beam-column reinforced with steel banding point welding, to form electrical pathways to meet the requirements of GB50057-94 is 3.3 .5 note that the provision: The provision in the same time pointed out: This will not damage the roof structure will not affect the safety of buildings. There are some worth noting that, highlight the metal roofing such as metal frames, billboards, flagpoles, solar water heaters, cooling towers, air barrier lights, in addition to its size should be consistent with GB50057-94 section 4.4.1 and the provisions of Article 4.1.2, because the metal is usually through the expansion bolt in the roof, or fixed on the basis of plain concrete, it needs a reliable electrical connection through the electrical pathway to form. Prominent non-metallic roof materials, according to Clause 3.3.2 of GB50057-94 air terminals shall install lightning protection device is connected with the roof. 2, using concrete column, wall reinforcement as lightning deflectors different types of structure are equipped with a certain number of buildings of reinforced concrete columns, as in masonry structure set structural columns, set in the concrete structure frame columns, shear walls, etc., according to bar diameter column, 4φ12, the frame structure of frame column reinforcing rebar usually more than Φ14 GB50057-94 can meet the requirements of section 3.3.5 and 4.2.1. Column connections in the form of reinforced connections usually banding, welding and mechanical connections, in accordance with the 6 times the diameter of the round, therefore, not allowed to use steel instead of round for lap steel. In addition, as deflectors in the main bar in civil engineering is used if the head Welding (commonly used in engineering in the form of flash butt welding and electroslag welding, Welding belong to the head), should be in the Welding Department at specification welding lap bar. 3, the use to beam as the basis for grounding building foundation in the form of expansion can be divided into non-muscle basis, extended basis, under column strip footing, raft, box base,[link widoczny dla zalogowanych], piles and composite ground. According to GB50057-94 section 3.2.4, Article 3.3.5, Article 3.4.3, Article 4.4.3 provides that grounding device should be 50cm in the ground below, section 4.3.5 also stipulates: Anti-cloud-to's artificial grounding of IE or sidewalk from the building of not less than 3m, the time when the level is less than 3m depth grounding local insulation of not less than 1m or take protective measures. Building foundation depth is usually based on their height, under floor embedded pipeline corrosion height and depth of frost and other factors, generally greater than 0.5m. But in the masonry structure as shown in Figure 1, the wall strip footing under the requirements of the building waterproofing, foundation ring beam is usually set at the elevation of -0.060 to replace the vapor barrier, it is not a grounding device. And the bar foundation under the raft, the underlying basis of the bottom box with ribbed, independent foundation under column and are equipped with various types of pile foundation pull beam or cap beam, the above ground can be met as a basis for physical plant requirements. Second, the electrical and structural arrangement of embedded pipeline distinct electrical deposition of laying the pipeline and Concealed two. Is the pipeline for surface mounted on walls, ceiling surface, has little effect on the structure, while the dark dressing is entirely different. Concealed in the embedded electrical line construction and installation is an important part. Electrical characteristics of the pipeline is the root embedded in multiple, complex layout, especially in the vertical wall embedded in the pipeline and embedded in the floor level of the pipeline section of the weakened structural components, some effect on the structure, below be discussed from several aspects 1, the vertical wall embedded in the structure of the pipeline laying When the vertical pipe laid embedded in reinforced concrete columns in reinforced concrete shear walls or when , laying method is relatively simple, just change the line pipe steel, and steel banding with a fixed structure to prevent vibration in the pouring of concrete when the deviation. Smaller diameter due to electrical lines, concrete walls,[link widoczny dla zalogowanych], columns had little effect, according to the need for flexible arrangements. However, when the pipeline laid in the masonry wall in the vertical, the laying of a relatively complex manner, which is the electrical installation engineering and civil conflicts more places. Mainly in the form of structural wall masonry load-bearing walls and concrete structures in the non-load-bearing infill walls, the following two cases discussed separately (1) in the laying of masonry load-bearing walls on the masonry structures, including masonry, concrete masonry, stone body and so on. First, set up in the masonry structure does not allow diagonal pass trough level and the level embedded in each ring beam pipe is usually buried in the. The vertical wall embedded pipe buried directly in the wall before the tank laying on tick, but this practice will damage the wall structure, especially when more parallel pipelines laid, the section on the carrying capacity of the wall are affected. Press ,[link widoczny dla zalogowanych], dug trench, can not be avoided should take the necessary measures or by a weakened section of checking the bearing capacity of the wall. Currently feasible method is left behind in the brick masonry 120 DEEP mouth, the width of the pipeline according to the number of parallel or semi-brick by brick, to be used after the pipeline embedded C20 fine aggregate concrete filled reality. When using hollow bricks or concrete hollow block, also there is a way is to use holes in the masonry laying pipeline, according to GB50003-2001 the first section 6.2.14 Note block masonry, allowing the vertical holes in the wall to set the pipeline. But in fact common type of brick KP1 aperture about 20mm, DM1-type brick aperture of about 18mm, are small, and heavy block, block group to request mortar joint at different times and therefore approach the construction inconvenience. When the wall is a half brick wall , in accordance with specifications, are not allowed in a half brick wall Concealed within the pipeline, such as inevitable, then the addition of concrete structures using a local form of columns, will be buried in the column pipe. (2) filling in the concrete walls embedded in the concrete structure infilled walls only bear their own weight, commonly used aerated concrete block,[link widoczny dla zalogowanych], fly ash concrete hollow block, etc. Such materials are characterized by low intensity, light weight, even if the failure has no effect on the main structure. Thus, embedded in the wall filled only need to consider the crack, noise and other factors,[link widoczny dla zalogowanych], the walls filled with slot in the wall thickness of not more than half.
Construction on the building electrical design and structure the discussion of issues related to a number of


Abstract: In this paper, electrical design and construction of buildings and structures in a number of issues related to discuss proposed design and construction should be noted that problems and solutions for the design and construction by reference. More articles related to topics：


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