550MPa vs 235MPa！济南农村建房，轻钢重钢差别实测，8度抗震强度持平

　　550MPa vs 235MPa！ Jinan rural housing construction, light steel and heavy steel differences measured, 8-degree seismic strength remains the same

　　现在济南农村盖房，钢结构越来越受欢迎，不管是自家建房还是村里统一规划，总能听到“轻钢”“重钢”这两个词。但绝大多数农户都犯迷糊：同样是钢结构，轻钢和重钢到底有啥不一样？选哪个更适合农村自建房？今天就带大家走进济南本地钢结构工厂，实打实看看二者的差别，用通俗的话+精准数据，把事情唠透，不管你是准备盖房选型，还是单纯好奇，看完这篇，保证一看就懂，不花冤枉钱、不踩选型坑。

　　Nowadays, steel structures are becoming increasingly popular in rural areas of Jinan. Whether it is self built houses or village unified planning, the words "light steel" and "heavy steel" can always be heard. But the vast majority of farmers are confused: what is the difference between light steel and heavy steel when they are both steel structures? Which one is more suitable for rural self built houses? Today, we will take you into a local steel structure factory in Jinan to see the difference between the two in real life. Using simple language and accurate data, we will explain the matter thoroughly. Whether you are preparing to build a house or just curious, after reading this article, we guarantee that you will understand it at a glance, without wasting money or stepping into the selection pit.

　　区分轻钢和重钢，最核心的差别先看原材料，一眼就能分清，数据对比更是直观。咱们先看重钢，农村重钢建房用的原材料，主要是H型钢，长得厚实粗壮，核心作用就是充当房子的梁和柱，所以重钢建房一般做的是梁柱体系的框架结构，主打一个“扎实稳重”。它的钢材屈服强度是235MPa，虽然强度不算特别高，但胜在厚度足，大多在6-9mm，靠厚度撑起承载力，就像农村干活的壮汉，浑身是劲，主打一个抗造。

　　The core difference between light steel and heavy steel is to first look at the raw materials, which can be distinguished at a glance, and data comparison is even more intuitive. Let's first take a look at Chongqing Iron and Steel. The raw materials used for building houses in rural areas are mainly H-beams, which are thick and sturdy. Their core function is to serve as the beams and columns of the house. Therefore, Chongqing Iron and Steel generally uses a beam column system framework structure for building houses, emphasizing a "solid and stable" approach. Its steel yield strength is 235 MPa, although the strength is not particularly high, it excels in its sufficient thickness, mostly between 6-9 mm. It relies on thickness to support its bearing capacity, just like a strong man working in the countryside, full of strength and focusing on one aspect of resistance.

　　再看济南农村盖房最常用的轻钢，原材料和重钢差别很大，用的是S550镀铝锌钢带，比H型钢轻便太多，厚度仅0.8-1.2mm，却有着超强的性能——S550代表它的屈服强度高达550MPa，是重钢屈服强度的2.3倍还多！这种镀铝锌钢带，会通过工厂的冷轧设备，加工成各种规格的型材，每一根型材都有专属编号，这个编号在建筑设计中对应唯一的安装位置，拼装起来后，墙体里的每一根龙骨都能均匀受力，就像精瘦干练的小伙，看着单薄，实则爆发力十足。

　　Looking at the most commonly used light steel for building houses in rural areas of Jinan, the raw material is very different from heavy steel. It uses S550 aluminum zinc coated steel strip, which is much lighter than H-beam, with a thickness of only 0.8-1.2mm, but has super strong performance - S550 represents its yield strength of up to 550MPa, which is more than 2.3 times that of heavy steel! This aluminum zinc coated steel strip will be processed into various specifications of profiles through the cold rolling equipment of the factory. Each profile has a unique number, which corresponds to a unique installation position in the architectural design. After assembly, every keel in the wall can be evenly stressed, just like a thin and capable young man, looking thin but actually full of explosive power.

　　很多济南农户最关心的问题：轻钢和重钢，到底谁的强度更高？盖房住几十年，安全最重要。这里给大家一个实打实的结论：单论单个构件“单挑”，轻钢肯定比不过重钢，毕竟二者不在一个重量级——重钢构件厚实，单根承载力更强；但放到农村自建房的实际场景中，二者的综合强度其实没差别！

　　Many farmers in Jinan are most concerned about the question: which has higher strength, light steel or heavy steel? Building a house for decades, safety is the most important. Here is a concrete conclusion for everyone: when it comes to the "single member" of a single component, light steel is definitely not as strong as heavy steel, after all, the two are not in the same heavyweight category - heavy steel components are thicker and have stronger single bearing capacity; But in the actual scenario of self built houses in rural areas, the comprehensive strength of the two is actually no different!

　　给大家看一组实测数据：同样按照济南地区8度抗震设防烈度设计，单平米荷载都按200kg标准考量，轻钢和重钢的综合强度完全持平，都能稳稳抵御地震冲击，守护房屋安全。这就像一公斤棉花和一公斤钢铁，虽然材质、外观天差地别，但重量完全一样，核心看设计标准。而且在济南农村自建房中，轻钢的使用数量往往是重钢的10倍不止，靠多根龙骨协同受力，弥补了单根构件承载力的不足，安全性完全有保障。

　　Let me show you a set of measured data: also designed according to the seismic fortification intensity of 8 degrees in Jinan area, the single square meter load is considered according to the 200kg standard. The comprehensive strength of light steel and heavy steel is completely equal, and both can stably resist earthquake impact and protect the safety of the house. This is like a kilogram of cotton and a kilogram of steel, although the material and appearance are vastly different, the weight is exactly the same, and the core depends on the design standards. Moreover, in self built houses in rural areas of Jinan, the use of light steel is often more than 10 times that of heavy steel. By relying on multiple keels to work together, the insufficient bearing capacity of a single component is compensated for, and the safety is fully guaranteed.

　　既然强度差不多，那二者的主要差别到底在哪？重点就在墙体构造上，这也是最影响农村居住体验的地方。轻钢的墙体，是由冷轧加工后的型材拼装成龙骨，中间填充保温棉，外层再贴合装饰板和防潮层，墙体厚度一般在15-20cm，保温隔热效果特别好，契合济南冬冷夏热的气候，而且施工便捷，不用繁琐的砌筑工序，还能有效减少材料损耗，损耗率控制在3%以内，远比传统建筑和重钢建筑节省材料。

　　Since the intensity is similar, what is the main difference between the two? The focus is on the wall structure, which is also the most influential aspect of rural living experience. The wall of light steel is assembled into a keel from cold-rolled profiles, filled with insulation cotton in the middle, and then covered with decorative panels and moisture-proof layers on the outer layer. The thickness of the wall is generally 15-20cm, and the insulation effect is particularly good, which is suitable for the cold winter and hot summer climate in Jinan. It is also easy to construct, does not require complicated masonry processes, and can effectively reduce material loss, with a loss rate controlled within 3%, far saving materials compared to traditional buildings and heavy steel buildings.

　　而重钢的墙体，大多是在梁柱框架上砌筑砖墙，或者安装厚重的复合墙板，墙体厚度至少30cm，比轻钢墙体厚一半还多，不仅占用室内使用面积，保温隔热效果也不如轻钢——实测显示，济南农村轻钢房屋冬季采暖费用比重钢房屋降低40%左右，节能优势特别明显。除此之外，轻钢墙体拆装、改造也更方便，后期想加盖房间、修改格局，不用破坏主体结构，重钢墙体则大多需要拆改梁柱，麻烦又费钱。

　　However, the walls of heavy steel are mostly built on beam column frames with brick walls or installed with thick composite wall panels. The wall thickness is at least 30cm, which is more than half that of light steel walls. It not only occupies indoor space, but also has a lower insulation effect than light steel. Tests have shown that the winter heating cost of light steel houses in rural areas of Jinan is about 40% lower than that of steel houses, and the energy-saving advantage is particularly obvious. In addition, the disassembly and renovation of light steel walls are also more convenient. In the later stage, if you want to add rooms or modify the layout, you don't have to damage the main structure. Heavy steel walls mostly require the dismantling and renovation of beams and columns, which is troublesome and expensive.

　　结合济南农村自建房的真实案例来看，长清区某农户盖了一套200㎡的轻钢住宅，用的S550镀铝锌钢带，屈服强度550MPa，按8度抗震设计，单平米荷载200kg，施工仅用30天就完工，总造价36万元，比同等面积重钢住宅节省8万元；投入使用1年来，冬季室内温度比重钢邻居家高5-6℃，还特别防潮，完全适配农村居住需求。而旁边另一户农户盖的重钢住宅，虽然也符合安全标准，但施工用了50天，后期想加建储藏间，因墙体构造限制，额外花费了2万多元。

　　Based on the real case of self built houses in rural areas of Jinan, a farmer in Changqing District built a 200 square meter light steel residential building using S550 aluminum zinc coated steel strip with a yield strength of 550MPa, designed for seismic resistance of 8 degrees, and a single square meter load of 200kg. The construction was completed in just 30 days, with a total cost of 360000 yuan, saving 80000 yuan compared to the same area of heavy steel residential buildings; In the past year of use, the indoor temperature in winter is 5-6 ℃ higher than that of steel neighbors, and it is particularly moisture-proof, fully suitable for rural living needs. The heavy steel residential building built by another farmer next to it also meets safety standards, but it took 50 days to construct. Later, due to the limitations of the wall structure, an additional storage room was added, which cost more than 20000 yuan.

　　总结来说，济南农村盖房选轻钢还是重钢，不用再被“强度”困扰——550MPa轻钢 vs 235MPa重钢，按8度抗震、200kg/㎡荷载设计，综合强度完全持平。二者的核心差别的是原材料、构件形态和墙体构造，轻钢轻便、省成本、施工快、保温好，更适配农村自建房“经济实用、便捷省心”的需求；重钢扎实、单根承载力强，更适合需要承载重型设备的厂房、仓库。对济南农户来说，自家盖房住，优先选轻钢，既省钱、又省心，还能享受更好的居住体验，妥妥的性价比之选。

　　In summary, when choosing light steel or heavy steel for rural housing construction in Jinan, there is no need to be troubled by "strength" anymore -550MPa light steel vs 235MPa heavy steel, designed for seismic resistance of 8 degrees and a load of 200kg/㎡, the comprehensive strength is completely balanced. The core differences between the two are raw materials, component forms, and wall structures. Light steel is lightweight, cost-effective, fast to construct, and has good insulation, making it more suitable for the needs of rural self built houses that are "economical, practical, convenient, and worry free"; Heavy steel is solid and has strong single bearing capacity, making it more suitable for factories and warehouses that need to carry heavy equipment. For farmers in Jinan, when building their own houses, they prefer light steel, which is not only cost-effective and worry free, but also provides a better living experience. It is a cost-effective choice.