Due to the characteristics of wide construction site, complex structure, tight construction period, large number of components and frequent professional crossover, large quality control difficulties and safety risks are often encountered in the construction of large venues
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At the beginning of the construction of Weihai International Economic and trade exchange center, the project department combined with the actual situation of the project, gathered the strength of the whole company, used BIM Technology to solve problems for the actual construction, and accumulated a lot of application experience
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Now it is compiled and shared with the readers
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Weihai International Economic and trade exchange center is located in the core area of Binhai New Town in the East, west of Xiaoyao lake, Huanhai road in the north, Xiaoyao Avenue in the west, Songjian road in the south, connecting mountains and sea
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The project includes exhibition center, human settlement center, international exchange center, five-star hotel and business hotel area
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The project is divided into two areas, convention and Exhibition comprehensive area and conference residential area, with a total construction area of about 320000 m2
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The comprehensive exhibition area includes multi-function exhibition hall, standard exhibition hall, landing hall, exhibition gallery, etc; The exchange of human settlements includes international conference center and human settlements center
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This project has many structural types and novel shapes, including hyperbolic orthogonal truss structure, steel frame structure, beam string structure, etc; Due to large volume and tight construction period, it is difficult to efficiently integrate civil engineering, steel structure, electromechanical, decoration, curtain wall, metal roof and other specialties; The proportion of thick plate above 40mm is large, and the project is close to the sea, and there are many windy weather, so the installation and unloading of support jig, the welding of thick plate and super thick plate, and the anti-corrosion technology of steel members are required to be high
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The maximum span of the beam string of the standard exhibition hall is 87.2m
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The beam string of double cable reverse arch roof and high vanadium cable clamp are used for installation
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The tension process of the cable is controlled, and the calculation of tension force and deformation control are difficult（ a) The project department adopts BIM Technology in “site layout”, “in-depth design”, “3D visualization”, “virtual model”, “construction simulation”, “construction checking”, “schedule management”, “quality and safety management”, “cost control”, “BIM + VR” and “quality and safety management” “BIM + big data platform” and other aspects to ensure the quality of the project
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Three BIM Technology practical application one site layout, the project site is vast, covering an area of 320000 square meters, a large number of monomer, a large amount of steel, a large number of components
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In the early stage of construction, the three-dimensional virtual layout is carried out for each construction stage to directly reflect the access road, material storage yard, processing shed and temporary power consumption; During the construction stage, Dajiang UAV was purchased to take more than 500 aerial photos and tens of thousands of high-definition photos of the construction site, dynamically adjust the layout of the site, ensure that the site road is smooth, facilitate personnel management, reasonably organize horizontal transportation, and dynamically master the real-time progress of the site（ a) Site virtual layout (b) UAV aerial drawing II in-depth design uses the visual and intuitive advantages of the model, finds drawing problems with the help of the model in the drawing review stage, feeds back the drawing problems to the Design Institute, and then modifies and optimizes the model according to the designer’s reply
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On the one hand, it improves the quality of drawing review, and on the other hand, it ensures the accuracy of BIM model（ a) Joint review of drawings I (b) joint review of drawings II comprehensively consider the prefabrication, transportation, hoisting and other links of components, establish a 1:1 true model exactly the same as the actual construction, and optimize the segmentation of steel columns, trusses, beam strings, etc; According to the arrangement of steel bars, the connection nodes between steel members and concrete are refined to accurately guide the on-site construction and greatly reduce the rework rate of on-site components（ a) Multi function exhibition hall (b) Conference Center (c) exhibition corridor (d) double deck exhibition hall (E) standard exhibition hall three-dimensional visualization based on BIM visualization features, simulate the site construction, and conduct three-dimensional communication to professional personnel before the construction of large-span beam string, steel structure and steel bar complex connection parts, so as to avoid improper construction caused by operators’ misunderstanding
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Three dimensional technical disclosure technical disclosure records four virtual templates, through BIM software to establish component information, node practices, installation measures, safety protection and other virtual templates, and generate two-dimensional code
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At the mobile end, it is intuitive and convenient to carry out safety technical education and disclosure at all stages of construction for personnel in all links, so as to effectively prevent common quality problems（ a) Component information (b) two dimensional code (c) five Bureau virtual template (d) construction virtual template five construction simulation uses BIM Technology to simulate the construction process of multi-functional exhibition hall, conference center, standard exhibition hall, large-span beam string, high vanadium cable tension, etc., at the same time, simulates the equipment walking route, temporary support measures, component installation sequence, and finds out various problems that may be encountered in construction in advance, Compare and select various construction schemes to determine the most economical and safe construction scheme
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Multi function exhibition hall construction simulation 1
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Set up support jig 2
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Lift the first composite beam 3
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Steel roof support and column construction 4
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Unload from both sides to the middle, complete the secondary beam 5
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Install the lock, install the sliding equipment 6
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Slide the sliding unit forward one wheelbase 7
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Lift the third composite beam and secondary beams on both sides 8
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Slide forward one wheelbase 9 Complete the remaining cumulative sliding part 10, slide the roof to the corresponding axis position 11, remove the high-altitude assembly platform 12, install the gables on both sides and the superstructure 6 construction checking calculation, use midasgen to simulate and analyze the whole process of midspan deflection, vertical displacement and deformation during the installation and padlocking of the beam string of the standard exhibition hall; The vertical lateral displacement and settlement of the temporary support under lateral wind pressure and top load are simulated to ensure the safety and reliability of the whole construction process
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Roof installation process analysis of standard exhibition hall: substructure installation completed 1-1 installation completed 1-2 installation completed beam 1 hanging cable installation completed 2-2 installation completed 1 beam 2 structure installation completed 2 hanging cable installation completed roof hanging cable and installation completed seven schedule management, BIM Technology is used to export the list of components to be installed, prepare component mobilization plan and installation plan, and define the mobilization time of each component, Make sure the schedule is controllable
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Input the component processing schedule, mobilization schedule and hoisting schedule into BIM model, and compare them according to the actual situation of the site
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Track and feedback the components that do not meet the plan, analyze the reasons, correct the deviation in time, and assist UAV to monitor the progress, so as to avoid blind construction（ a) Export component list (b) input progress information (c) mark status information eight quality safety management collect field data, corresponding to the relevant position of the engineering model, establish quality defect database at the mobile end, form traceability records, and conduct data analysis and statistics on the nodes prone to problems; All hazards in the construction process are found in the model, and the safety net, lifeline, operation platform and safety channel are arranged in a modular way to ensure the construction safety（ a) Quality data acquisition (b) quality data acquisition (c) safety data acquisition (d) modular layout of safety facilities (9) reasonable segmentation and segmentation of cost control can reduce the cost of transportation and on-site hoisting; The cost can be saved to the greatest extent by improving the turnover use of supporting jig and basement roof reinforcement measures; At the same time, the BIM model is used to quickly extract the quantities of each construction stage, which provides accurate data support for cost management of each stage, such as cost planning, subcontracting settlement, owner calculation and so on（ a) Component segmentation and segmentation (b) component processing details (c) accurate extraction of quantities (d) component related information x BIM + early construction, actively communicate with the general contractor and the owner, and elaborate the positive impact of new BIM Technology in the field of construction on construction.
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