A special-shaped curtain wall steel skeleton modular construction method

Abstract

The application discloses a kind of special-shaped curtain wall steel skeleton modular construction method, comprising the following steps: by three-dimensional software, establish the model of outer facade steel skeleton module and correct model, outer facade steel skeleton modular treatment, site construction surveying and setting-out, transverse keel and connecting piece installation, steel skeleton assembly, steel skeleton hoisting, aluminum plate installation, glue cleaning and inspection, this construction technology greatly reduces the measurement workload, reduces the possibility of measurement error occurrence, and this construction technology is by crane and aerial vehicle (straight arm vehicle or curved arm vehicle) cooperation construction, avoid the limitations of traditional measures basket or scaffold construction, reduce the time of high-altitude operation, at the same time, it is favorable to the management of welding fire prevention and fire connection work, welding fume purifier is placed conveniently, can effectively purify the smoke generated by welding, effectively solve the environmental protection problem, reduce construction cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of special-shaped curtain wall construction, and particularly relates to a special-shaped curtain wall steel skeleton modular construction method. BACKGROUND

[0002] With the rapid development of the national economy in China, the continuous updating of design concepts and design ideas, and the progress of construction technology, in recent years, a large number of special-shaped curtain wall structures have emerged in large and medium-sized cities in China, such as large airports, exhibition centers, stadiums and the like. Such buildings mostly lead the trend of contemporary architectural art with unique appearance modeling and are mostly located in densely populated areas in cities, have tight project duration, large-span curtain wall supporting structures, complex skeleton modeling, and large construction difficulty, and the use of conventional curtain wall construction technology has great challenges to project progress, cost and quality management.

[0003] The conventional curtain wall construction technology has the following problems:

[0004] The construction technology is to scatter and install the steel skeleton of the frame curtain wall between the main structures, and a steel pipe scaffold or a construction basket needs to be erected to cooperate with the construction; the steel pipe scaffold or the construction basket is only suitable for conventional curtain wall installation, has great limitations for special-shaped curtain wall or stadium ring-shaped spherical building construction, and cannot fully meet the demand; the use of conventional construction technology for special-shaped curtain wall steel skeleton construction needs to measure and position points for each steel skeleton installation, and it can be known that thousands of point positions need to be measured and positioned on site, the measurement work seems simple, but is actually very complicated, and a slight mistake will affect the engineering quality, even lead to unqualified engineering, and the large number of point positions and long construction period are very prone to errors, and the construction quality and installation precision are difficult to effectively control, and more than 95% of the time in the construction process is high-altitude welding operation, at the same time, the steel skeleton assembly and welding amount is great, the welding operation fire and fire management is difficult, sparks fly everywhere, welding fume cannot be effectively purified, and it is not conducive to the construction site environmental protection management.

[0005] In order to solve the problems of large-span steel skeleton of special-shaped curtain wall according to conventional frame curtain wall steel skeleton scatter and install construction difficulty, long construction period and the like in the prior art, the present application provides a special-shaped curtain wall steel skeleton modular construction method.

[0006] The technical scheme of the present application is as follows: a special-shaped curtain wall steel skeleton modular construction method, comprising the following steps:

[0007] Step 1, establishing an outer facade steel skeleton model by three-dimensional software and correcting the model;

[0008] Step2, the outer facade steel skeleton is modularized according to the steel skeleton model, the entire outer facade steel skeleton is modularized into several independent skeleton units, model data is exported, and each skeleton unit is lofted and processed in a processing area;

[0009] Step3, on-site construction measurement and line laying are performed according to the size in the steel skeleton model to determine installation points;

[0010] Step4, horizontal keels and connecting pieces are installed, the horizontal keels are installed in the 3-6 skeleton units processed in Step2 to form a steel skeleton, coordinates of the connecting pieces are extracted from the three-dimensional software, the coordinates are introduced to the horizontal keels and the main structure by using a total station, and then the connecting pieces are installed;

[0011] Step5, the steel skeleton is assembled, the steel skeletons that can be spliced are spliced into a steel skeleton unit through the connecting pieces and the outer facade steel skeleton model;

[0012] Step6, the steel skeleton is hoisted, the corresponding steel skeleton units are hoisted by a crane or an aerial vehicle in cooperation with construction according to the outer facade steel skeleton model and the measured points in Step3, the steel skeleton units are hoisted at the measured points and the connecting pieces to obtain an outer facade steel skeleton of a special-shaped curtain wall;

[0013] Step7, the aluminum plate is installed, the aluminum plate is welded and installed outside the outer facade steel skeleton of the special-shaped curtain wall obtained in Step6;

[0014] Step8, the glue is applied and the cleaning is performed, the glue is applied to fix the connections and the cleaning is performed, and the installation of the special-shaped curtain wall is completed;

[0015] Step9, the inspection is performed, the whole is detected, and unqualified parts are reworked and rectified until the quality acceptance requirements are met, and after the acceptance is passed, the anti-rust paint and the silver powder paint are applied.

[0016] As a further improvement of the above technical solution:

[0017] Preferably, the Step1 comprises the following steps:

[0018] Step11, a three-dimensional model of the outer facade steel skeleton is established by using three-dimensional software according to the project building drawing, the structure drawing and the curtain wall deepening drawing;

[0019] Step12, model adjustment, before the curtain wall steel skeleton is installed, it is necessary to ensure that the deviation of the main structure is within a controllable range, the total station is used on site to re-measure the civil structure, the actual measurement coordinate parameters are input after measurement, and the three-dimensional model of the outer facade steel skeleton is further corrected in the three-dimensional software.

[0020] Preferably, the installation of the connecting piece in the Setp4 comprises the following steps:

[0021] Setp41, extracting coordinate points, using rhinoceros model modular processing, extracting the positioning coordinates of the center of the steel skeleton of each unit, the center line of the steel skeleton is the center line of the connecting piece, so the position of the connecting piece needs to be determined during installation;

[0022] Setp42, control horizontal line, pull the horizontal line to control the height and size of the connecting piece during installation;

[0023] Setp43, connecting piece installation, after the three-dimensional space position of the connecting piece is determined accurately, temporary fixation of the connecting piece is carried out, that is, spot welding;

[0024] Setp44, retest, the on-site technician rechecks the installed connecting piece according to the data extracted from the model, and carries out full welding, corrosion prevention and acceptance after the rechecking is correct.

[0025] Preferably, the position deviation of the connecting piece in the Step42 is less than or equal to 2mm.

[0026] Preferably, in the Setp43, 2-3 welding points are set on each welding surface during spot welding, so as to ensure the firm installation of the connecting piece and avoid falling off.

[0027] Preferably, before the Setp6 operation, the following steps are further included:

[0028] Setp61, exporting coordinate control point data through three-dimensional software, and using total station to accurately lead the coordinate control point to the main structure.

[0029] Preferably, the number of coordinate control points is 4.

[0030] Preferably, the single skeleton after the Setp4 processing should be calibrated and inspected.

[0031] Preferably, in the Setp6 process, the steel skeleton is temporarily fixed after being in place, and then is reinforced in time after the correction is completed, finally is fixed after the overall hoisting is completed, and is installed from the lower part to the upper part gradually.

[0032] Preferably, the three-dimensional software is rhinoceros software.

[0033] Compared with the prior art, the present application has the following beneficial effects:

[0034] 1. By adopting the cooperation of the crane and the aerial vehicle (straight arm vehicle or curved arm vehicle) for construction, the limitations of traditional measures such as basket or scaffold construction are avoided.

[0035] 2. Through three-dimensional modeling and modular processing of the model, 3-6 steel frame main keels are split into independent frame units, and lofting and processing are carried out on the processing area jig frame. Only 4 positioning points need to be measured when hoisting each frame unit. The construction technology greatly reduces the measurement workload and reduces the possibility of measurement error.

[0036] 3. The steel frame unit is lofted and processed on the processing area jig frame, avoiding steel frame positioning and assembly in the air, reducing construction difficulty, and effectively controlling construction quality and steel frame installation precision.

[0037] 4. Lofting and processing in the processing area allows most of the assembly and welding operations to be performed on the ground or jig platform, reducing the time of high-altitude work, and facilitating the management of welding fire prevention and ignition work. The welding fume purifier is easy to place, can effectively purify the smoke generated by welding, effectively solves the environmental protection problem, and reduces the construction cost.

[0038] The construction method of the present application reduces nearly 2 / 3 of the measurement workload, shortens the construction period, realizes modular processing of the steel frame, unit processing and hoisting, and has high installation precision, which wins valuable time for subsequent surface material construction and work face handover. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a construction method flowchart of the present application;

[0040] Figure 2 is a three-dimensional model diagram of the external facade steel frame of the present application;

[0041] Figure 3 is a three-dimensional model diagram of the present application according to the total station composite structure coordinate correction steel frame;

[0042] Figure 4 is a modular processing diagram of the steel frame of the present application;

[0043] Figure 5 is a frame unit diagram of the present application;

[0044] Figure 6 is a steel frame unit assembly diagram of the present application;

[0045] Figure 7 is a site hoisting construction drawing of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0047] In the description of the present application, it should be understood that the terms "front", "back", "left", "right", "up", "down" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The technical solutions of the embodiments in the present application can be combined, and the technical features in the embodiments can be combined to form new technical solutions.

[0048] As shown in the drawings, Figure 1 The construction method provided by the present application specifically includes the following steps: establishing an outer facade steel skeleton model, model adjustment, outer facade steel skeleton modularization processing, measurement and line laying, transverse keel and connecting piece installation, re-measurement (calibration inspection), steel skeleton assembly, coordinate control point setting, steel skeleton hoisting, aluminum plate installation, glueing and cleaning, and acceptance.

[0049] Each step will be explained one by one as follows.

[0050] Establishing an outer facade steel skeleton model According to the project building drawing, structure drawing and combined with the curtain wall deepening drawing, a three-dimensional model of the outer facade steel skeleton is established by using Rhinoceros software, as shown in the modeling model shown in the drawings. Figure 2

[0051] Model adjustment Before the installation of the curtain wall steel skeleton, it is necessary to ensure that the deviation of the main structure is within a controllable range. The total station instrument is used on site to re-measure the civil structure. After measurement, the actual measurement coordinate parameters are input to the site, and the steel skeleton structure model in the drawings is further corrected, and the steel skeleton three-dimensional model according to the total station composite structure coordinate is obtained. Figure 2 Figure 3 Model adjustment Before the installation of the curtain wall steel skeleton, it is necessary to ensure that the deviation of the main structure is within a controllable range. The total station instrument is used on site to re-measure the civil structure. After measurement, the actual measurement coordinate parameters are input to the site, and the steel skeleton structure model in the drawings is further corrected, and the steel skeleton three-dimensional model according to the total station composite structure coordinate is obtained.

[0052] Outer facade steel skeleton modularization processing As shown in the drawings, Figure 4 According to the steel skeleton model, the entire outer facade steel skeleton is modularized and processed, and is split into several independent skeleton units. The model data is exported, the overall lofting processing of each skeleton unit in the processing area is realized, the overall hoisting of the steel skeleton is completed after processing, and the skeleton unit is shown in the drawings. Figure 5

[0053] Measurement and line laying The installation points are determined by measuring the size in the steel skeleton model on site.​​​

[0054] Cross keel and connecting piece installation First, the 3-6 skeleton units that have been processed are installed with cross keels to form a steel skeleton. After the cross keel installation is completed, the connecting piece coordinate points are extracted from the rhinoceros model, the coordinates are introduced to the cross keel and the main structure using a total station, and then the connecting piece installation is performed. The procedure is as follows:

[0055] Coordinate point extraction The rhinoceros model is used for modular processing to extract the positioning coordinates of the center of each unit steel skeleton. The center line of the steel skeleton is the center line of the connecting piece, so the position of the connecting piece must be determined during installation, and the position deviation must not be greater than 2 mm.

[0056] 5.2 Control horizontal line

[0057] When installing the connecting piece, a horizontal line is drawn to control the height and size of the in-out. Although the horizontal height has been controlled during the installation of the cross keel, in order to reduce the influence of construction errors, the horizontal position and the in-out position of the connecting piece must be controlled during installation to ensure the installation accuracy of the connecting piece.

[0058] 5.3 Connecting piece installation

[0059] After the three-dimensional position of the connecting piece is accurately determined, temporary fixation of the connecting piece, i.e. spot welding, is performed. During spot welding, 2-3 welding points are used on each welding surface to ensure that the connecting piece is firmly installed and avoids falling off.

[0060] Re-measurement (calibration inspection) After the installation of the connecting piece is completed, the on-site technician rechecks the installed connecting piece according to the data extracted from the model. After the recheck is correct, the connecting piece is fully welded, corrosion-proofed, and accepted.

[0061] Steel skeleton assembly Figure 6 As shown in the figure, the steel skeleton units that can be spliced are spliced into steel skeleton units through the steel skeleton unit assembly diagram derived from the connecting piece and the outer facade steel skeleton model. After the steel skeleton assembly is completed, the welding slag needs to be knocked off, and the general contractor and the on-site management personnel of the supervisor need to conduct overall inspection and acceptance. Unqualified parts are reworked and rectified until the quality acceptance requirements are met. After the acceptance is passed, anti-rust paint and silver powder paint are applied.

[0062] Coordinate control point setting Before each independent unit steel skeleton is hoisted, 4 fixed positioning coordinate control points are selected in advance. After the coordinate point data is exported from the rhinoceros model, the coordinate points are accurately introduced to the main structure using a total station.

[0063] Steel skeleton hoisting Figure 7As shown, by adopting the crane and high-altitude vehicle (straight arm vehicle or curved arm vehicle) for hoisting, in order to ensure the safety of the operation, the hoisting area is closed for warning during the hoisting operation, and the hoisting operation is started after the closure to avoid sudden accidents. Hoisting must be strictly in accordance with the established plan, no one can change it privately, and the binding point and position of the component during hoisting should be paid attention to. The lifting point should be calculated to ensure that it is reasonable in stress during hoisting and does not deform or break. The steel skeleton is temporarily fixed after being in place, and is reinforced in time after correction is completed, and is finally fixed after the overall hoisting is completed. In order to reduce the installation deviation and welding stress, the installation should be gradually from the lower part to the upper part.

[0064] After all the steel skeleton units are hoisted, the aluminum plate is installed on the outer facade steel skeleton, and the aluminum plate is welded and installed outside the outer facade steel skeleton.

[0065] Gluing and cleaning The connection of the whole is glued and cleaned, and the installation of the special-shaped curtain wall is completed.

[0066] Inspection The whole is inspected, and the unqualified parts are reworked and rectified until the quality acceptance requirements are met.

[0067] Although embodiments of the present application have been shown and described, it will be understood by those having ordinary skill in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for the modular construction of a steel skeleton of a special-shaped curtain wall, characterized in that, It comprises the following steps: Step 1, establishing an outer facade steel skeleton model by three-dimensional software and correcting the model; Step 2, modularizing the outer facade steel skeleton model according to the steel skeleton model, splitting the model into several independent skeleton units, exporting the model data, and realizing the overall lofting and processing of each skeleton unit in the processing area; Step 3, on-site construction measurement and setting-out, determining the installation points according to the dimensions in the steel skeleton model; Step 4, installing the transverse keel and connecting pieces, installing the transverse keel of the 3-6 skeleton units processed in Step 2 to form the steel skeleton, extracting the coordinate points of the connecting pieces by the three-dimensional software, leading the coordinate points to the transverse keel and the main structure by the total station, and then installing the connecting pieces; Step 5, assembling the steel skeleton, assembling the steel skeleton units by the connecting pieces and the outer facade steel skeleton model; Step 6, hoisting the steel skeleton, hoisting the corresponding steel skeleton units by the crane or aerial vehicle according to the outer facade steel skeleton model and the measured points in Step 3, and then hoisting the connecting pieces to obtain the outer facade steel skeleton of the special-shaped curtain wall; Step 7, installing the aluminum plate, welding and installing the aluminum plate outside the outer facade steel skeleton of the special-shaped curtain wall obtained in Step 6; Step 8, gluing and cleaning, gluing and fixing the connections and cleaning to complete the installation of the special-shaped curtain wall; Step 9, inspection, detecting the whole and reworking and rectifying the unqualified parts until the quality acceptance requirements are met, and then brushing the anti-rust paint and silver powder paint.

2. The method of claim 1, wherein, The Step 1 comprises the following steps: Step 11, establishing an outer facade steel skeleton three-dimensional model by three-dimensional software according to the project building drawing, structure drawing and curtain wall deepening drawing; Step 12, model adjustment, before installing the curtain wall steel skeleton, the deviation of the main structure must be ensured within a controllable range, the total station is used to re-measure the civil structure, the actual measurement coordinate parameters are input after measurement, and the outer facade steel skeleton three-dimensional model is further corrected in the three-dimensional software.

3. The method of claim 1, wherein the method further comprises: The installation of the connecting pieces in Step 4 comprises the following steps: Step 41, extracting coordinate points, extracting the center positioning coordinates of each unit steel skeleton by the rhinoceros model modularization processing, the center line of the steel skeleton is the center line of the connecting piece, so the position of the connecting piece must be determined during installation; Step 42, controlling the horizontal line, pulling the horizontal line to control the height and size of the connecting piece during installation; Step 43, installing the connecting piece, temporarily fixing the connecting piece by spot welding after determining the three-dimensional space position of the connecting piece; Step 44, re-measuring, the connecting piece installed is re-checked by the on-site technician according to the data extracted from the model, and the connecting piece is fully welded, corrosion-proofed and accepted after re-checking.

4. The method of claim 3, wherein the method further comprises: The position deviation of the connecting piece in Step 42 is less than or equal to 2 mm.

5. The method of claim 3, wherein the method further comprises: In Step 43, 2-3 welding points are arranged on each welding surface during spot welding to ensure the firm installation of the connecting piece and avoid falling off.

6. The special-shaped curtain wall steel frame modular construction method according to claim 1, characterized in that, Before the Setp6 operation, the following steps are further included: Setp61, exporting coordinate control point data by three-dimensional software, and accurately leading the coordinate control point to the main structure by using a total station.

7. The method of claim 6, wherein, The number of the coordinate control points is 4.

8. The special-shaped curtain wall steel frame modular construction method according to claim 1, characterized in that, The single framework after the Setp4 processing should be calibrated and tested.

9. The special-shaped curtain wall steel frame modular construction method according to claim 1, characterized in that, In the Setp6 process, the steel framework is temporarily fixed after being placed, and is timely reinforced after the calibration is completed, and is finally fixed after the overall hoisting is completed, and is gradually installed from the lower part to the upper part.

10. The method according to any one of claims 1-9, wherein, The three-dimensional software is rhinoceros software.

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