Advantages, Disadvantages, and Comprehensive Cost Analysis of Steel Structure Villas
Steel structure villas utilize steel frameworks as their primary structural support, bearing loads and providing stability. The reinforcing connections of steel structures enhance their overall integrity, forming a cage-like enclosing structure with the steel skeleton for pouring concrete. Foam concrete is then used as the filling material for the enclosing structure, integrating steel structures and steel meshes into a cohesive unit, creating lightweight insulation walls, roofs, and floors. Together, steel structures, steel meshes, and lightweight fillers form a complete architectural structural system.
The structural characteristics and advantages of steel structure villas are as follows:
1.Floor Construction: The floors of light steel villas consist of cold-formed thin-walled steel frames or composite beams, OSB structural panels for floors, supports, connectors, and other components. Materials used include chipboard and cement board. The weight of the floor structural system is only one-fourth that of traditional domestic concrete floor systems.
2.Roof System: The roof system of light steel villas is composed of roof trusses, OSB panels, waterproofing layers, and lightweight roof tiles. Steel roof structures can have various exterior material combinations.
3.Wall Structure: The walls of light steel villas are primarily made up of wall frame columns, top beams, bottom beams, wall supports, wall panels, and connectors. Light steel villas typically use internal crosswalls as load-bearing walls, with wall thicknesses determined by the loads they bear. This wall structure layout can effectively withstand and reliably transmit vertical loads and is easy to arrange.
4.Building Insulation and Energy-Saving Technology: To ensure insulation, light steel villas use insulation materials in exterior walls and roofs that can be used long-term and provide thermal insulation. In addition to filling the space between wall columns with glass fiber, light steel villas often add an extra layer of insulation material on the outer wall, effectively breaking the thermal bridge from wall columns to exterior wall panels. All interior walls are filled with glass fiber between wall columns to reduce heat transfer between rooms.
5.Lightweight and High Strength: Under the same load conditions, steel structural components have smaller cross-sections and lighter weights, facilitating transportation and installation. They are suitable for structures with large spans, high heights, and heavy loads.
6.Water Conservation (Reduced Sewage Discharge): Steel structure residential construction is mainly done through on-site assembly, significantly reducing water usage and sewage discharge during construction. It saves time and effort while lowering basic energy consumption.
7.Time-Saving: Steel structures are composed of various profiles and are easy to manufacture. Many steel structures are prefabricated in specialized steel fabrication factories. Prefabricated components are transported to the site for assembly using bolted connections. The lightweight structure facilitates easy construction, resulting in shorter construction cycles. Additionally, they are easy to dismantle, reinforce, or modify.
8.Environmentally Friendly: Assembly-based construction reduces noise pollution, wastewater discharge, and dust pollution at the construction site, protecting the environment.
9.Material Recovery and Recycling: When buildings are demolished, the recovery rate of main structural materials in steel structure villas exceeds 90%.
10.Low Cost: The cost of framed steel structures is around 1300-1500 yuan per square meter. With large spans, they offer more spacious areas and higher space utilization rates. They are also safe with excellent seismic performance. Due to these numerous advantages, more and more people are choosing steel structures for building homes. China is a major steel producer, but recently, due to various reasons, steel prices have remained high, increasing the construction cost of steel structure villas by more than 30% compared to before. Therefore, now may not be the best time to build.