輕型鋼結構是一種由冷彎薄壁型鋼構件與新型結構板材組成的裝配式建筑體系，具有自重輕、施工快捷、抗震性能好等優點。該體系適用于1至6層低層建筑，能有效提高使用面積并降低基礎造價。其耐久性可達70年以上，保溫隔熱性能為傳統磚墻的2倍。

Lightweight steel structure is a prefabricated building system composed of cold-formed thin-walled steel components and new structural plates, which has the advantages of light weight, fast construction, and good seismic performance. This system is suitable for low rise buildings with 1 to 6 floors, which can effectively increase the usable area and reduce the foundation cost. Its durability can reach over 70 years, and its insulation performance is twice that of traditional brick walls.

輕型鋼結構的三大核心優勢：

The three core advantages of lightweight steel structures:

優勢一：結構自重輕。 輕鋼結構采用高效輕型薄壁型材，承載力高，構件尺寸小，圍護結構采用自重小的輕質墻體和樓面材料，一般可減輕建筑結構自重的30%。該體系自重僅為傳統混凝土結構的1/3–1/2。基礎負擔小，可大幅減少基礎造價，尤其適用于地質條件較差的地區。

Advantage 1: The structure has a light weight. The light steel structure adopts efficient and lightweight thin-walled profiles with high bearing capacity and small component size. The enclosure structure uses lightweight wall and floor materials with low self weight, which can generally reduce the self weight of the building structure by 30%. The self weight of this system is only 1/3-1/2 of that of traditional concrete structures. The basic burden is small, which can significantly reduce the basic cost, especially suitable for areas with poor geological conditions.

優勢二：抗震性能好。 結構地震反應小，用于結構抗震措施的費用少，適用于地震多發區。輕鋼結構抗震性能可達9度設防。建筑物自重僅是磚混結構的五分之一，可抵抗每秒70米的颶風。

Advantage 2: Good seismic performance. The seismic response of the structure is small, and the cost of seismic measures for the structure is low, making it suitable for earthquake prone areas. The seismic performance of light steel structures can reach a fortification level of 9. The self weight of a building is only one-fifth of that of a brick and concrete structure, and it can withstand a hurricane of 70 meters per second.

優勢三：施工周期短。 輕鋼結構配件制作工廠化和機械化程度高，商品化程度高。現場施工速度快，主要為干作業，有利于文明施工。施工周期較傳統建筑縮短50%。一套200平方米的住宅，主體安裝僅需7至10天。標準化預制率達80%以上。

Advantage 3: Short construction period. The production of light steel structure accessories is highly industrialized and mechanized, with a high degree of commercialization. The on-site construction speed is fast, mainly for dry work, which is conducive to civilized construction. The construction period is 50% shorter than traditional buildings. A 200 square meter residential unit, the main installation only takes 7 to 10 days. The standardized prefabrication rate is over 80%.

主要結構體系： 輕型鋼結構主要包括輕型門式剛架結構、輕型鋼框架結構、交錯桁架結構及低層龍骨體系結構等常用體系。以冷彎薄壁輕鋼龍骨為承重骨架，結合輕型板材并通過自攻螺釘連接，形成墻體和樓蓋系統。墻體厚度約150mm，節省空間并增加有效使用面積7%-10%。

Main structural systems: Lightweight steel structures mainly include commonly used systems such as lightweight portal frame structures, lightweight steel frame structures, staggered truss structures, and low rise keel systems. Using cold-formed thin-walled light steel keel as the load-bearing skeleton, combined with lightweight panels and connected by self tapping screws, a wall and floor system is formed. The wall thickness is about 150mm, saving space and increasing effective usable area by 7% -10%.

技術規范與標準： 《門式剛架輕型房屋鋼結構技術規范》（GB51022-2015）對輕型鋼結構的設計、荷載、結構分析等做出了詳細規定。《輕型鋼結構制作及安裝驗收標準》（DG/TJ08-010-2025）自2026年3月1日起實施。輕型鋼結構建筑和普通鋼結構建筑沒有嚴格的定義，一般來說，輕型鋼結構建筑指采用薄壁構件、輕型屋蓋和輕型圍護結構的鋼結構建筑。

Technical specifications and standards: The "Technical Specification for Steel Structures of Light duty Buildings with Gabled Frames" (GB51022-2015) provides detailed provisions for the design, loading, and structural analysis of lightweight steel structures. The "Light Steel Structure Manufacturing and Installation Acceptance Standards" (DG/TJ08-010-2025) will be implemented from March 1, 2026. There is no strict definition for lightweight steel structure buildings and ordinary steel structure buildings. Generally speaking, lightweight steel structure buildings refer to steel structure buildings that use thin-walled components, lightweight roofs, and lightweight enclosure structures.

應用場景： 輕型鋼結構建筑輕盈利于工業化生產，施工組裝快速方便，特別適于要求快速建成和需要搬動的建筑，較多地用于學校、住宅、辦公、旅館、醫院以及工廠和倉庫等。門式剛架輕型房屋鋼結構具有柱網布置靈活、便于預制安裝、施工工期短、綠色環保、資源可回收利用等優點。材料可回收率達90%以上。

Application scenario: Light steel structure buildings are lightweight and conducive to industrial production, with fast and convenient construction and assembly. They are particularly suitable for buildings that require rapid construction and movement, and are commonly used in schools, residences, offices, hotels, hospitals, factories, and warehouses. The steel structure of portal frame lightweight houses has the advantages of flexible column grid layout, easy prefabrication and installation, short construction period, green environmental protection, and recyclable resources. The material has a recycling rate of over 90%.

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