Typical application of smart construction site?

The following is the typical application of smart site brought by Zhong Da Consulting for your reference.

Bim is the transformation process from two-dimensional model to three-dimensional model, and it is also the transformation process of traditional architecture from passive "encounter problems and solve problems" to active "find problems and solve problems". Therefore, the application of BIM is particularly important for the construction of "smart construction site".

As we all know, the traditional construction industry is a labor-intensive industry, and extensive management makes the use of labor, materials and mechanical equipment on site seriously wasted. According to the research report of American Industrial Research Institute, the non-value-added work (that is, invalid work and waste) in engineering construction industry is as high as 57%, while that in manufacturing industry is only 26%. From the experience of foreign countries and the current development of domestic construction industry, building a "smart site" is the best means to achieve refined management, that is to say, building a "smart site" is the means, and achieving refined management of the construction site is the goal, so as to finally achieve the goal of reducing construction costs and protecting the environment while completing the project on time with good quality and quantity.

A, the construction site layout

In the construction of "smart site", BIM modeling is used to model the functional area division, tower crane positioning and road layout of the site. Through the model, the working range, lifting load, utilization rate and the access route of people and vehicles of the tower crane are simulated, and the separation of three areas and people and vehicles is realized. The tower crane can meet the needs of construction, and the construction site can run orderly during the peak period of employment and vehicle access.

In the stage of construction site layout, corresponding technical measures are taken to ensure construction safety. For example, when the tower crane is arranged, the tower crane anti-collision system is installed on the tower crane, and the early warning value of the lifting weight and anti-collision distance of the tower crane is set through the tower crane anti-collision system, which can effectively prevent the tower crane from being overweight and colliding, and ensure the construction safety.

At the same time, a reservoir is set up at the construction site to collect rainwater and construction precipitation. After being filtered by the rainwater well, the on-site rainwater flows into the sedimentation tank through the rainwater pipe, and then flows into the fire-fighting pool for reuse after precipitation filtration, providing water for on-site fire fighting, spraying, green irrigation and construction production. While saving water, it can also reduce the dust on the construction site through the utilization of rainwater.

Second, BIM model application

The construction of "smart site" depends on the construction site management platform. The information source in the platform mainly comes from the engineering BIM model. In most cases, the accuracy of BIM model determines the development degree of "smart construction site". In the construction of "smart site", the application of BIM mode mainly focuses on the following aspects:

Statistics of engineering quantity: After BIM model is created, through the interpretation of the model, we can analyze the material engineering quantity of each construction flow section, such as the concrete engineering quantity. Judging from the implementation of B4 project of Beijing Administrative Sub-center, the difference between the concrete quantity directly extracted by the model and the actual quantity can be controlled within 65438 0%. In the steel structure, through the decomposition of the model, the steel structure components are processed directly according to the model.

Construction simulation: after the construction schedule is made, the construction schedule is associated with BIM model through software to simulate the construction process. Comparing the actual progress with the simulated progress, we can intuitively see whether the project is lagging behind, and analyze the reasons for the lag, so as to ensure that the project is completed as planned.

Visual disclosure: through the visual characteristics of BIM, the construction scheme is simulated, and the three-dimensional animation disclosure is made to the construction personnel, which improves the feasibility of disclosure.

Node analysis: through the interpretation of design drawings, BIM modeling of complex nodes is carried out, and the complex nodes are analyzed through the model. For example, complex steel bar joints, after the model is established, observe the model, find the collision point of steel bars, and optimize the layout of steel bars; It can also simulate the stress state of the formwork support system to ensure the construction safety of the formwork support system.

Comprehensive pipeline collision detection: in the construction process, there are often cases where the reserved holes are not reserved and the electromechanical and equipment pipelines collide during installation. Faced with these situations, the measures taken in the traditional construction process are to excavate the wall and floor again, and cross each other when installing pipelines to reduce the actual use space of the floor. In the construction of "smart site", after the design drawings are issued, the building is fully modeled according to the design drawings, and the reserved holes are displayed in the three-dimensional model, so as to visually display the reserved holes in each position and prevent forgetting. After the structural, architectural, electromechanical and equipment models are created, the mold is closed, the collision points are analyzed, the design is communicated, and the design drawings are modified. In the early stage of the project, the problem of pipeline fighting was solved, the construction period was saved, and the smooth construction was ensured.

Third, labor management.

In terms of labor management, the construction of "smart site" first realizes the closed management of the construction site, which can effectively control the entry and exit of construction workers through gates and other equipment, prevent foreign strangers from entering the construction site, and make the construction site safer.

Through the labor management system and real-name management, we can analyze the structural composition, age composition, gender ratio and other information of laborers according to the identity information of construction workers, rationally optimize the quality of labor teams, and know the total number of people present and the distribution of subcontractors, teams and posts in real time. Through a period of data collection, the labor force management system can accurately provide the labor force curve during this period, and managers can analyze the labor force usage according to the labor force curve, compare the peak and low periods of employment, optimize the use of labor force personnel, and strive to make the labor force curve smoother under the condition of ensuring normal construction, avoid periodic slowdown, and save labor use costs.

Due to the real-name system management, laborers swipe their cards in and out of the construction site, which is recorded in real time by the labor management system, so that the general contractor can verify the attendance of laborers with the employing unit, provide real attendance basis for the salary settlement of laborers, and avoid labor disputes.

Four, materials and machinery and equipment management

The construction of "smart site" can realize real-time control of materials and mechanical equipment management.

In the traditional construction site management mode, the management of materials and mechanical equipment is uncontrollable. For example, the traditional material management: after the technical department puts forward the material plan, the material department purchases, and then the material department feeds back the time when the material arrives at the scene, and the material department signs for it after the material arrives at the scene. Then, in this process, materials often fail to arrive on time, and the materials present are insufficient or unqualified.

"Smart Site" tracks and manages incoming materials according to the Internet of Things, big data and BIM technology. That is to say, combined with electronic tags (such as RFID, QR code, etc. ), for bulk materials, mechanical and electrical equipment, steel structure, PC components, sampling specimens, etc. for material progress tracking management. Monitor the entry of materials in real time, so that managers can know the entry of main materials in time. For example, where the material is currently located, whether the manufacturer has sufficient inventory, the processing of components and the transportation time required for the material to enter the site. After managers know this information, they can effectively control the entry of materials according to the actual progress of the project.

In terms of mechanical equipment management, we can reasonably arrange the entry and exit time of mechanical equipment according to the simulation of construction schedule. When mechanical equipment enters the site, managers can know the location and usage of the mechanical equipment entering the site in the building through the additional information of the QR code. When the mechanical equipment exits, managers can find the mechanical equipment in time through the information attached to the QR code to prevent it from being lost or damaged.

Verb (abbreviation for verb) remote monitoring

In recent years, local provincial and municipal management units are gradually bringing video surveillance into the requirements of site construction. In fact, remote video surveillance has long been one of the standard construction of site construction.

Remote monitoring in "smart construction site" is not only to install several cameras around the construction site, and then set up a monitoring room in the project department to monitor the construction site. Instead, through the Internet, the construction unit, the construction unit, the supervision unit and the competent construction department can know the progress of the construction site in real time through the mobile APP and PC to realize transparent construction.

Through the comprehensive application of modern advanced technologies such as BIM, cloud computing, Internet of Things, smart devices and big data, the construction industry is driving in the fast lane of "smart construction site", and Beijing Aibojiesi Company and related companies are at the forefront in this direction. The traditional imprint will completely become history, and the fine management of "green, intelligent, lean and intensive" will be realized, and the green, intelligent and livable smart building will surely become the construction industry.

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