Steel structure space frame cost

1. Industrial workshop steel structurespace frame cost control

3. Significance of cost control of steel structure engineering space frame In the construction of industrial plants, steel structures are very common as the main structural engineering. In a broad sense, steel structure is a structure mainly made of steel materials and is one of the main types of building structures. Steel has high strength, light weight, good formability and strong deformation ability, and is suitable for building large-span and super-high and super-heavy buildings. The steel structure consists of steel columns, steel beams, and steel trusses connected by welding seams, bolts or rivets. The steel structure space frame engineering scope explored in this paper includes metal structure engineering such as steel beams, steel columns, and steel supports other than roof and wall envelope structures.

4. Taking the construction and installation project of the joint workshop of the XX automobile factory as an example, the steel structure space frame cost accounts for 33% of the cost of the entire construction and installation project. According to project data, under the market conditions in 2020, the cost of steel structure engineering is about 450 yuan per square meter. At the same time, the investment amount of steel structure engineering is large, the technical level of technicians is high, and the integrity of construction is strong, and there are a lot of cost risk factors. As the main structural project of steel structure engineering, the effect of cost control is of great significance. Therefore, whether from the perspective of resource saving or from the perspective of cost control, control the cost of steel structure engineering

5. Steel structurespace frame cost control program

6. In order to reasonably control the cost and obtain more profits, from the initialspace frame design, the cost is actively controlled subjectively, which also makes the design more intensive, economical and reasonable. According to the cost management procedure, the steel structure grid cost management system The department mainly includes cost planning, cost control, cost accounting, cost analysis and cost assessment. For engineering manufacturers, cost planning can be intervened in the design stage. Through preliminary prediction and cost intervention after detailed design, cost management can gain a good momentum of economic benefits in the cost planning stage, and make practical design and implementation plans. In the cost control stage, the construction section can be divided according to the construction area, and the completion of the cost plan can be monitored. And through the regular cost accounting, the numerical test is carried out on the completion situation, and the variable factors and factors are found in the analysis of cost deviation. For this reason, it is necessary to adjust cost decisions in a timely manner. In the end, the purpose of evaluating the cost of the sub-projects is realized, the enthusiasm of each participant in the steel structure project is mobilized, and the reward and punishment measures of the cost management responsibility system are implemented. The direct cost composition of steel structure space frame is different from that of traditional structural components, mainly including: material cost, processing cost, transportation cost, installation cost of components; fire protection and anti-corrosion cost; high-altitude operation measures cost. According to the cost accounting method, the cost of steel structure engineering can be divided into budget cost, target cost and actual cost. In the management process, the general contractor of the project pays more attention to the comparison between the three, finds different factors through comparative analysis, and reasonably carries out the cost Control. According to the relationship between production cost and engineering quantity, the cost of steel structure engineering can also be divided into fixed cost and variable cost. The fixed cost can generally be determined through a reasonable plan before implementation, and the risk to the contractor is very small. The management of variable costs is a dynamic management and control process, which is the key focus of the general contractor of the project in the implementation.

7. Steel structurespace frame cost control points

8. Reasonable optimization ofspace frame design The light steel space frame structure has large span, high storey height, flexible layout, low cost, fast construction, and high economic benefits from the perspective of time value of capital. From the beginning of the selection, the structural engineer actively seeks structural solutions to save steel in the checking calculation according to the needs of use and other requirements. The common portal frame can adopt the form of welded H-beam, hot-rolled H-beam, steel pipe, square tube and combined section. When the process requirements allow, choose the form of grid frame with economical and reasonable span The coating design of steel structure affects later maintenance costs, so the optimization of coating design is also very important in cost control. The anti-corrosion performance of the red dandelion alkyd anti-rust primer used in the past cannot be guaranteed. At present, epoxy zinc-rich primers, epoxy micaceous iron intermediate paints, and acrylic polysiloxane topcoats are more commonly used for anti-corrosion. The exposed surfaces of fire-resistant coatings are intumescent, and the concealed areas are non-intumescent. Optimized, High compatibility, beautiful appearance and good durability.

9. Take advantage of market competition The steel structure costis the material, labor, and mechanical expenses incurred by the enterprise in the production and installation of materials. There is no standardized quotation system in China, and most of them rely on the actual cost measurement within the enterprise. Before implementation, by doing a good job of cost forecasting, preparing cost plans, taking advantage of market competition to do cost control, and timely accounting for costs during implementation, strengthening cost management, and then giving full play to the advantages of project general contracting management from the entire grid cost management process, Reasonable management and control to create benefits. As a grid manufacturer, professional subcontracting of steel structure engineering is generally not priced according to the traditional list quota model. In the procurement process, usually only the weight of the steel structure and the surface area for painting are listed. The subcontracting unit price adopts the comprehensive unit price of the full cost, including the production, installation and transportation costs of the steel structure, regardless of the height. The installation fee includes connecting parts such as connecting bolts (including high-strength bolts), auxiliary materials such as welding materials, and all preparation costs required for the installation of the steel structure except for the measures listed separately.

10. Control the cost of thespace frame construction process The choice of the construction scheme has an important impact on the installation quality, construction period and labor consumption. The installation of the steel structure workshop is the process of splicing the steel columns, steel beams, crane beams and supports processed in the factory into a whole structure at the construction site. In this process, labor organization and management is an important link that affects the cost. In recent years, with the sharp rise of labor costs in my country, it is necessary for construction entities to formulate scientific and reasonable labor organization and management plans. At the same time, the size and weight of the installation equipment are relatively large, and large-scale equipment is sometimes encountered during on-site installation and demolition and off-site transportation. The investment in purchasing or leasing these machinery often accounts for a large proportion of the cost of steel structure installation, and the cost of different equipment or equipment with different specifications of the same type is quite different. Therefore, it is necessary to select suitable lifting equipment in the construction process to reduce the cost of machinery usage. Steel structure construction is a material and labor-intensive project. For such sub-projects, capital occupation is relatively concentrated. How to improve the turnover rate and liquidity of capital is an effective measure to reduce costs. Optimize the construction schedule to achieve the overall integration of duration, cost and resources 利用市场竞争管控 钢结构成本是企业在材料制作安装中发生的材料、人工、机械费用支出，国内尚无规范的报价体系，大多依靠企业内部的实际成本测算。 在实施前，通过做好成本预测，编制成本计划，利用市场竞争做好成本控制，并在实施期间及时核算成本，加强成本管理，进而从整个网架成本管理过程中发挥工程总承包管理优势，合理管控，创造效益。 作为网架制造商，钢结构工程专业分包一般不按照传统清单定额模式计价。采购中，通常只明列钢结构重量和涂刷表面积两类项目，分包单价采用全费用综合单价，包含钢结构的制作、安装、运输费，不区分高度。安装费中包含连接螺栓（含高强螺栓）等连接部件、焊接材料等辅材以及为安装钢结构所需的除单独列项的措施费以外的一切准备费用。

11. Control construction quality standards Steel structure is the most obvious feature of the prefabricated construction of industrial plant buildings, and it is also the most suitable sub-project for prefabricated management. Therefore, it is possible to greatly improve the utilization of materials by establishing material control and installation standards for the whole process and full participation of all staff. Efficiency and installation effectiveness. On the basis of meeting the strong strip specifications, the enterprise formulates its own construction process requirements samples, and controls the construction technology and methods. Strictly control the overall hoisting/splicing of the space frame, the number of layers of anti-corrosion and fire-resistant coatings for steel structures, the number of brushing times, the thickness of brushing, and the protection of finished products. When stacking steel, pay attention to the leveling of the site, the smooth drainage and the convenience of management, so as to save storage and management costs. Before painting, the base surface should be cleaned, and shot blasting or sand blasting can be used to remove rust. Coating is prone to peeling and surface sagging. It is necessary to strictly control the process during construction and strengthen protection after construction. 控制网架施工过程费用 施工方案的选择对安装质量、施工工期、劳动力消耗有重要影响。钢结构厂房的安装是将工厂加工而成的钢柱、钢梁、吊车梁和支撑等构件在施工现场拼接成为整体结构的过程。在这个过程中，劳动力组织和管理是影响成本的重要环节。近年，随着我国劳动力成本的急剧攀升，施工主体有必要制定科学、合理的劳动力组织和管理方案。同时，安装设备尺寸、重量较大，现场安拆、场外运输有时会遇到大型设备。采购或租赁这些机械的投入在钢结构安装成本中往往占比不小，且不同设备或同类单不同规格设备费用差别较大。因此，需要在施工过程中选用合适的起重设备以降低机械使用费。钢结构施工属于材料和劳动密集型工程，对于此类分部工程，资金占用较集中，如何提高资金的周转率和流动性是降低成本的效措施。优化施工进度计划，实现工期、费用和资源的整体 利用市场竞争管控 钢结构成本是企业在材料制作安装中发生的材料、人工、机械费用支出，国内尚无规范的报价体系，大多依靠企业内部的实际成本测算。 在实施前，通过做好成本预测，编制成本计划，利用市场竞争做好成本控制，并在实施期间及时核算成本，加强成本管理，进而从整个网架成本管理过程中发挥工程总承包管理优势，合理管控，创造效益。 作为网架制造商，钢结构工程专业分包一般不按照传统清单定额模式计价。采购中，通常只明列钢结构重量和涂刷表面积两类项目，分包单价采用全费用综合单价，包含钢结构的制作、安装、运输费，不区分高度。安装费中包含连接螺栓（含高强螺栓）等连接部件、焊接材料等辅材以及为安装钢结构所需的除单独列项的措施费以外的一切准备费用。

12. Strengthen departmental coordination The cost control of steel structure engineering space frame cannot rely solely on the control of the space frame construction site. Under the weak matrix organizational structure, the project manager can coordinate the cost control department The door is limited, and the contractor headquarters is required to coordinate the commercial department, the procurement department, and the engineering site And the mutual cooperation of designers to achieve the purpose of cost control. Here, business The department mainly forecasts cost targets, and is responsible for cost control and comparison in the process Analysis, subcontract settlement and settlement with the owner, etc. The purchasing department is responsible for materials and labor Centralized procurement, communicate market conditions and procurement conditions with other departments at any time. The project site Responsible for the implementation, control the progress, track the whereabouts of the material machine, if there is a cost deviation, Timely warning. The technical department ensures the optimal solution according to the cost situation. In case of emergencies, timely adjust the construction technical plan. Structural designers also Pay attention to the cost overrun or balance of the design scheme, form engineering data accumulation, in the future project as a reference. The headquarters should also form an early warning mechanism in each link, The EPC project forms a whole and systematically controls the cost. 利用市场竞争管控 钢结构成本是企业在材料制作安装中发生的材料、人工、机械费用支出，国内尚无规范的报价体系，大多依靠企业内部的实际成本测算。 在实施前，通过做好成本预测，编制成本计划，利用市场竞争做好成本控制，并在实施期间及时核算成本，加强成本管理，进而从整个网架成本管理过程中发挥工程总承包管理优势，合理管控，创造效益。 作为网架制造商，钢结构工程专业分包一般不按照传统清单定额模式计价。采购中，通常只明列钢结构重量和涂刷表面积两类项目，分包单价采用全费用综合单价，包含钢结构的制作、安装、运输费，不区分高度。安装费中包含连接螺栓（含高强螺栓）等连接部件、焊接材料等辅材以及为安装钢结构所需的除单独列项的措施费以外的一切准备费用。