The hoisting of prefabricated components (PCs) is a key step during the construction of prefabricated buildings. Aiming at the problems existing in the control of PC hoisting, an innovative hoisting management system framework based on the digital twin (DT) is established in this paper. The system framework comprehensively utilizes the …Web

Introduction. A prefabricated building refers to a building in which all or parts of the building are prefabricated in a factory. These are then transported to construction sites for assembly, connection, and partial cast-in-situ construction (1–3)pared with traditional construction methods, prefabrication has many advantages ().First, using …Web

In addition, adopting prefabricated construction can save expenses of ¥43.1/m 2 in the rental of mortar pump systems (B31), ¥28.9/m 2 in the rental of suspended platforms (B32), and ¥137.5/m 2 in the rental of concrete pump systems (B33). B31, B32, and B33 account for 20.6%, 13.8%, and 65.6% of B3, respectively. Figure 8.Web

zone. Ha et al. [22] designed a U-shaped steel strand semi-precast concrete beam-column joint suitable for fortified earthquakes. The seismic performance of the new prefabricated joint could meet the requirements for use in moderate earthquake areas. Yu et al. [23] proposed steel strands anchored precast concrete beam-column joints. The …Web

Concrete is ubiquitous. A mainstay of the construction industry, over 10 billion cubic meters of concrete is used every year. It's also responsible for up to 8% of CO 2 emissions: one ton of ...Web

The precast concrete panel sizing selected was two 6 × 4 ft (1830 × 1220 mm) panels set on two 2 × 4 ft (610 × 1220 mm) panels with a ¾ in. (19 mm) wide sealant joint forming a cross between all four panels. The committee agreed that this 8 × 8Web

The innovative prefabricated concrete wall panel system consists of two precast concrete layers interconnected through stainless steel lattice girders, Figure 3. 50 % of the total ... The schematic overview of the whole production line is presented on figure 6. Figure 6: Schematic overview of the production line . Page 6Web

Steel formworks are widely used in prefabricated buildings thanks to their good characteristics. With the rapid development of engineering construction in China, steel formwork concrete structures, characterized by convenient construction, good seismic performance, and high strength, are expected to be more extensively applied in …Web

production line, in order to promote the fine management and information management and control of PC intelligent production line. 1.Introduction Prefabricated concrete …Web

The prefabricated concrete composite (PCC) plate is a critical and major component in construction projects [17]. ... PCC-plate production line, reinforcement production and processing, in-plant transportation, steam curing, and auxiliary equipment. (2) Transport-logistics substage.Web

By the adoption of the prefabricated part production line, each conveying system corresponds to two complete production line procedures, and only one production line can be started or two production lines can be simultaneously operated. When the two production lines are simultaneously operated, the same prefabricated part products …Web

The purpose of this paper is to investigate the process optimization of a precast concrete component production line by using value stream mapping.,This paper is an empirical focused on of lean production theory and value stream mapping. The data in the case study were collected in real time on-site for each process during the production ...Web

Figure 1 shows the six steps of a typical production line: (1) mold assembly, (2) reinforcement setting, (3) casting, (4) curing, (5) mold …Web

Precast concrete (PC) components are the basic building blocks of prefabricated concrete buildings, and the production efficiency of PC component manufacture has a direct bearing on the benefits …Web

In-situ production of precast concrete (PC) members is affected by various factors, such as cost, time, quantity, lead-time, number of molds, production cycle, number of cranes, and yard stock area. Particularly, the yard stock area constitutes over 84% of the total required area, considerably larger than the production area. ...Web

The increasing number of prefabrication projects has increased the demand for precast concrete (PC) components. The production cost of PC components significantly affects the development …Web

Liu Guiwen et al. proposed a carbon emission calculation model for a precast component production line and conducted a case study with precast concrete wall panels [25]. It can be seen that carbon ...Web

Optimizing the production process of prefabricated steel frames: VSM, JIT: Empirical analysis, DES: 9: Gallardo et al. (2014) [98] Brazil: Promoting line flow precast concrete process through basic stability: PDCA: Empirical analysis: 10: Ahmad et al. (2019) [30] Malaysia: Optimizing the reinforcement work process in the precast concrete …Web

Hyredin Mussema (Construction head of PBPPE),Ato Tilahun Tamiru (concrete production coordinator in PBPPE), Ato Noah Birhanu (project manager of Ybel industrial plc) and Ato H/Mikael Fentaw (prefab expert in Ybel industrial plc) and others factory professionals for their ... Figure 2.3. Expansion of IMS precast concrete system …Web

1. Introduction1.1. Strategies to reduce the environmental impact of the concrete industry. Concrete is the most consumed material in the world, with 30 gigatons of annual demand (Monteiro et al., 2017).In Europe, concrete waste alone contributes about 30% of the total mass of solid waste (Böhmer et al., 2008).Made of sand and gravel …Web

Section snippets PC production process. The typical production process in a PC factory consists of the following sequence [Benjaoran et al., 2005]: mold assembling (m 1), reinforcement and placing of all embedded parts (m 2), concrete casting (m 3), concrete curing (m 4), mold stripping (m 5), and product finishing (m 6).All PC products are …Web

A technical design is developed to attend and assist populations in need of single-family housing and for populations in post-emergency situations. It exposes a production process of precast …Web

This research represents an innovative application of lean production theory and value stream mapping in a complex production line of precast concrete …Web

The production efficiency can be improved through the systematic coordination of prefabricated construction, including production line planning, the …Web

In contrast with the production of general manufacturing products, different types of components can be produced simultaneously on a prefabricated component …Web

On the other hand, during the manufacturing stage, a large amount of wet work was transferred to the factory, prefabricated components were produced in a mechanized, standardized, and intelligent production line, resulting in a significant reduction in waste generation . The air pollution produced by conventional construction …Web

Some scholars focus on the carbon emissions of prefabricated components in the production stage. Liu Guiwen et al. proposed a carbon emission calculation model for a precast component production line and conducted a case study with precast concrete wall panels . It can be seen that carbon emissions of prefabricated components have …Web

1. Introduction. The existence of prefabrication plants and numerous successful construction projects realized with precast concrete elements for all or part of a building structure demonstrate that this technology is effective and economical [].In [], the author contended that by employing industrialized and automated building system methods, the amount of …Web

Today, prefabricated concrete elements are used in many construction areas, including in industrial, public, and residential construction; this was confirmed via questionnaire research. In the article, the prospects for precast concrete development are presented, and the factors determining the use of this technology are defined. Based on …Web

The present invention provides a kind of precast concrete production lines, belong to precast concrete production field, including pouring vibrational line, demoulding line, curing line and main-auxiliary vehicle, demoulding line handles the mold releasability after maintenance, and will be sent into through demoulding treated mold circulation and …Web

Process connection and blocking are two characteristics of the flowshop production of precast components; however, they have received little attention in …Web

Depending on the fabrication environment, 3DCP can be categorized under in-situ fabrication or prefabrication. The examples in Fig. 3.1, Fig. 3.2 show a gap in the level of functional diversity and geometric complexity between the two categories [13].In-situ 3DCP is predominantly used to produce walls with straight extruded geometries [4].As such, the …Web

Xi Zhang Scientific Reports 13, Article number: 15094 ( 2023 ) Cite this article 266 Accesses Metrics Abstract To address the processing scheduling problem involving …Web

Batching and mixing plant S5-20. The Elematic Batching and Mixing plant S5 is a small, mobile and modular concrete mixing plant with a planetary mixer to produce up to 20 m3/h of high-quality concrete. Precast …Web

The rework risk function was based on the loss expectancy method.FindingsThere are 13 core tasks that have higher impacts than the average level. The core tasks in the design stage account for of the tasks in the stage, those in the manufacturing stage account for 20% and those in the construction stage account for …Web

Precast components making up prefabricated buildings are produced at a factory. The basic production process includes cleaning mold, binding steel, pouring concrete, curing component, and releasing …Web

Precast concrete production lines for hollow core slabs, double walls, sandwich walls, beams, columns, 3D modules. Click: elematicWeb

The innovative prefabricated concrete wall pa nel system consists of two precast concrete . ... Figure 6: Schematic overvie w of the production line . Page 6. 3. THE SUSTAINABILITY CONSIDERATIONS .Web

• Precast concrete non-load bearing façade panels. • Precast concrete floor system, either: - Precast concrete beams and precast slabs (reinforced concrete or prestressed) with a composite in-situ topping or Precast concrete walls with precast concrete slab system Figure 3.1 Precast prestressed slabs spanning between walls with composite ...Web