A method for supporting a jig construction control

Abstract

A kind of support jig construction control method, S1, whole project is simulated according to construction scheme Whole process construction simulation analysis, using three-dimensional simulation software to calculate the data of pre-cambering;S2, using the way of Rhino modeling Deepening modeling, adjust the number of support jig, support position and support height in deepening model Eliminate this part of deformation, and form deepening drawing;S3, when beam column is processed, according to deepening drawing respectively Set beam column second section support jig, beam column arch shell support jig, beam column third section support jig, flat shell temporary support jig;S4, when setting temporary support jig, support main limb lower part Set conversion beam, top arrangement force transmission beam and load distribution beam, conversion beam lower part Set embedded part, embedded part is connected and fixed by chemical anchor bolt, the upper part of force transmission beam is connected seamless steel tube, upper end is welded and fixed with dome drum type node;S5, after processing, according to the way of first batch of flat shell temporary support jig Unloading, second batch of beam column second section support jig Unloading, third batch of beam column arch shell support jig Unloading, fourth batch of beam column third section support jig Unloading;S6, unload temporary support jig.

Description

Technical Field

[0001] This application relates to the technical field of dome construction, and more specifically, to a method for controlling the construction of a support frame. Background Technology

[0002] For spatial grid shell dome structures, due to their irregular spatial shape and high requirements for architectural appearance, their structural system differs from that of frame and truss systems. They are subject to greater deformation under external forces, thus requiring multiple sets of support frames for support. Moreover, the support frames must be installed sequentially according to the construction order.

[0003] After construction, the unloading of the supporting towers is a gradual transformation process of the structural system. During unloading, the internal forces of the structural members and the stress on the temporary supports will change. Unloading must ensure safety and ease of construction while preserving the design intent and avoiding significant impacts on the mechanical properties of the components. To ensure that the stress on adjacent supporting frames does not change excessively during unloading, and to ensure that the internal forces of the structural members do not exceed the specified allowable stresses, thus preventing damage due to excessive internal forces in the supporting frames or structural members, the unloading process will inevitably involve changes in the internal forces of the structural members and the stress on the temporary supports. Different unloading steps will have a significant impact on the structure itself and the supporting frames. Therefore, rigorous theoretical calculations and comparative analyses are necessary to determine the order and magnitude of unloading. Summary of the Invention

[0004] The main objective of this application is to provide a construction control method for a support frame. By designing the structure of the support frame, the stability of the overall structure of the construction project is ensured. At the same time, the unloading sequence of the support frame and the size of the stages during unloading are designed to ensure the structural stability of the overall project after the support frame is unloaded.

[0005] To achieve the above objectives, firstly, this application provides a method for construction control of a support frame, comprising the following steps:

[0006] S1. Conduct a full-process construction simulation analysis of the entire project according to the construction plan, and use three-dimensional simulation software to calculate the pre-arching data.

[0007] S2. Use Rhino modeling to perform detailed modeling. Adjust the number of support frames, support positions, and support heights in the detailed model to eliminate this deformation and generate detailed drawings.

[0008] S3. During the processing of the bundled columns, according to the detailed drawings, set up the second section support jig for the bundled columns, the arch support jig for the bundled columns, the third section support jig for the bundled columns, and the temporary support jig for the flat shell. The assembly jig is composed of HW200×200 hot-rolled H-beams, and HW300×300 H-beams are set at the bottom as the base of the assembly jig. Adjust the elevation of the lowest point of the bundled column hoisting unit to 800mm from the floor surface. The gap between the assembly jig and the bundled columns is filled with t=20mm thick steel plates. Adjust the elevation of the lowest point of the dome hoisting unit to 800mm from the assembly surface. The gap between the assembly jig and the dome is filled with t=20mm thick steel plates.

[0009] S4. When installing the dome, a temporary support frame is set up to support the transfer beam set at the lower part of the main limb. The top is arranged with force transmission beams and load distribution beams. Embedded parts are set at the lower part of the transfer beam. The embedded parts are connected and fixed by chemical anchors. Seamless steel pipes are connected to the upper part of the force transmission beams and the upper end is welded and fixed to the dome drum-shaped node.

[0010] S5. After processing, the unloading is carried out in the following manner: the first batch of unloading the flat shell temporary support frame, the second batch of unloading the second section support frame of the bundle column, the third batch of unloading the bundle column arch shell support frame, and the fourth batch of unloading the third section support frame of the bundle column. Each batch is equipped with four gas cutters to cut, and the cutting amount is 10mm at a time.

[0011] S6. Unload the temporary support frame.

[0012] A further improvement is that the embedded parts are connected and fixed by anchoring D=14mm steel bars.

[0013] A further improvement is that C10 channel steel is arranged on the side of the seamless steel pipe as diagonal bracing.

[0014] A further improvement is that in step S3, when the height of the support frame is greater than 3.5m, a diagonal support is set up using C10 channel steel.

[0015] A further improvement is that in step S3, before assembly, the three-dimensional spatial coordinates of each control point are extracted using BIM technology, and then the three-dimensional spatial coordinates are converted into two-dimensional data through CAD modeling. Construction workers then carry out construction according to the two-dimensional data.

[0016] A further improvement is that a total station is used to detect the spatial position of each control point during the welding process of the support frame. After welding is completed, non-destructive testing is carried out after slow cooling for 24 hours. Only after passing the test can the next process be carried out.

[0017] A further improvement is that reflective strips are installed on the top of each node corresponding to the support frame, and a total station is used for full-process tracking and measurement.

[0018] The present invention provides a construction control method for a support frame, which, compared with the prior art, has the following advantages: First, the position, quantity, and height of the support frame are determined based on the deflection value calculated in simulation software, thereby achieving pre-arching using the support frame. Furthermore, the structure of the temporary support frame for the columns and dome is designed to ensure the stability of each construction stage and the overall project stability. Finally, the unloading sequence of the support frame is optimized to prevent stress changes throughout the project from affecting stability during the unloading process. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0020] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0021] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0022] In addition, the term "multiple" should mean two or more.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present application will now be described in detail with reference to the embodiments.

[0024] A method for construction control of a support frame includes the following steps:

[0025] Includes the following steps:

[0026] S1. Conduct a full-process construction simulation analysis of the entire project according to the construction plan, and use three-dimensional simulation software to calculate the pre-arching data.

[0027] S2. Use Rhino modeling to perform detailed modeling. Adjust the number of support frames, support positions, and support heights in the detailed model to eliminate this deformation and generate detailed drawings.

[0028] S3. During the processing of the bundled columns, according to the detailed drawings, set up the second section support jig for the bundled columns, the arch support jig for the bundled columns, the third section support jig for the bundled columns, and the temporary support jig for the flat shell. The assembly jig is composed of HW200×200 hot-rolled H-beams, and HW300×300 H-beams are set at the bottom as the base of the assembly jig. Adjust the elevation of the lowest point of the bundled column hoisting unit to 800mm from the floor surface. The gap between the assembly jig and the bundled columns is filled with t=20mm thick steel plates. Adjust the elevation of the lowest point of the dome hoisting unit to 800mm from the assembly surface. The gap between the assembly jig and the dome is filled with t=20mm thick steel plates.

[0029] S4. During dome installation, a 100t-class temporary support frame is required. HW300×300 transfer beams are installed at the lower part of the main support structure. HW200×200 hot-rolled H-beams are used as load-bearing and load-sharing beams at the top. HN800×300 transfer beams are installed at the lower part of the main support frame, with 14×400×400 embedded parts below them. These embedded parts are connected and fixed using D=14mm steel bars via rebar anchoring. HW300×300 hot-rolled H-beams are used as load-bearing and load-sharing beams at the top. HW200×200 hot-rolled H-beams with L=250mm (the position can be adjusted locally, but the maximum length must not exceed 1.0m) are used above the load-bearing beams. D219×10 short columns are pre-installed before concrete pouring, and HW350×350 transfer beams are installed on top of them. The upper part of the load transfer beam uses seamless steel pipes of D219×10, which are welded and fixed to the drum-shaped nodes at the upper end. The lower part of the transfer beam is equipped with 16×500×500 embedded parts, which are connected and fixed using M16×150 chemical anchors. The top arrangement uses hot-rolled HW200×200 H-beams as its load transfer beams and load-sharing beams. The upper part of the load transfer beam uses seamless steel pipes of D219×12, which are welded and fixed to the drum-shaped nodes at the upper end.

[0030] S5. After processing, the unloading is carried out in the following manner: the first batch of unloading the flat shell temporary support frame, the second batch of unloading the second section support frame of the bundle column, the third batch of unloading the bundle column arch shell support frame, and the fourth batch of unloading the third section support frame of the bundle column. Each batch is equipped with four gas cutters to cut, and the cutting amount is 10mm at a time. Flame cutting is preferred.

[0031] S6. Unload the temporary support frame.

[0032] Preferably, the embedded parts are connected and fixed by means of D=14mm steel bars using rebar anchoring.

[0033] To avoid lateral instability, C10 channel steel is arranged on the side of the seamless steel pipe as diagonal bracing. In step S3, when the height of the support frame is greater than 3.5m, a diagonal bracing is set up using C10 channel steel.

[0034] In order to achieve precise control of the construction process, in step S3, the three-dimensional spatial coordinates of each control point are extracted using BIM technology before the assembly of each support frame. Then, the three-dimensional spatial coordinates are converted into two-dimensional data through CAD modeling, and the construction personnel carry out the construction according to the two-dimensional data.

[0035] To ensure welding quality, a total station is used to check the spatial position of each control point during the welding process of the support frame. After welding is completed, non-destructive testing is carried out after slow cooling for 24 hours. Only after passing the test can the next process be carried out.

[0036] To ensure that each support frame does not change position during construction and thus accurately control deformation during construction, reflective sheets are installed on the top of the corresponding nodes of each support frame, and a total station is used for full-process tracking and measurement.

[0037] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for construction control of a support frame, characterized in that, Includes the following steps: S1. Conduct a full-process construction simulation analysis of the entire project according to the construction plan, and use three-dimensional simulation software to calculate the pre-arching data. S2. Use Rhino modeling to perform detailed modeling. Adjust the number of support frames, support positions, and support heights in the detailed model to eliminate this deformation and generate detailed drawings. S3. During the processing of the bundled columns, according to the detailed drawings, set up the second section support frame, the arch support frame, the third section support frame, and the temporary support frame for the flat shell. The assembly frame is composed of HW200×200 hot-rolled H-beams, and HW300×300 H-beams are set at the bottom as the base of the assembly frame. Adjust the elevation of the lowest point of the bundled column hoisting unit to 800mm from the floor surface. The gap between the assembly frame and the bundled column is filled with 20mm thick steel plate. Adjust the elevation of the lowest point of the dome hoisting unit to 800mm from the assembly surface. The gap between the assembly frame and the dome is filled with 20mm thick steel plate. S4. When installing the dome, a temporary support frame is set up. A transfer beam is set at the lower part of the main support member, and a force transmission beam and a load-sharing beam are arranged at the top. Embedded parts are set at the lower part of the transfer beam. The embedded parts are connected and fixed by chemical anchors. Seamless steel pipes are connected to the upper part of the force transmission beam and welded and fixed to the dome drum-shaped node at the upper end. S5. After processing, the unloading is carried out in the following manner: the first batch of unloading the flat shell temporary support frame, the second batch of unloading the second section support frame of the bundle column, the third batch of unloading the bundle column arch shell support frame, and the fourth batch of unloading the third section support frame of the bundle column. Each batch is equipped with four gas cutters to cut, and the cutting amount is 10mm at a time. S6. Unload the temporary support frame.

2. The construction control method for a support frame as described in claim 1, characterized in that: The embedded parts are connected and fixed by anchoring D=14mm steel bars.

3. The construction control method for a support frame as described in claim 1, characterized in that: C10 channel steel is arranged on the side of the seamless steel pipe as diagonal bracing.

4. The construction control method for a support frame as described in claim 1, characterized in that: In step S3, when the height of the support frame is greater than 3.5m, a diagonal support is set up using C10 channel steel.

5. The construction control method for a support frame as described in claim 1, characterized in that: In step S3, before assembly, the three-dimensional spatial coordinates of each control point are extracted using BIM technology. Then, the three-dimensional spatial coordinates are converted into two-dimensional data through CAD modeling. Construction workers then carry out construction according to the two-dimensional data.

6. The construction control method for a support frame as described in claim 1, characterized in that: During the welding process, a total station is used to detect the spatial position of each control point of the support frame. After welding, the frame is allowed to cool slowly for 24 hours before non-destructive testing is performed. Only after passing the test can the next process be carried out.

7. The construction control method for a support frame as described in claim 1, characterized in that: Reflectors are installed on the top of each node corresponding to the support frame, and the entire process is tracked and measured using a total station.