A construction method for the outside single-side of a ring truss without falsework

Abstract

The present invention discloses a construction method for the unilateral outside of the ring truss without a falsework. Based on the ANSYS finite element simulation analysis, the structural members are deeply designed to determine the installation position, installation form, and installation measures. Based on the deep design, the inner temporary support falsework, universal movable hinge supports, and the main structure are installed to carry out the construction preparation work. After the above construction is completed, the inner ring truss and the inner V-columns are installed. The outer V-columns are installed. After the installation is completed, the inner V-columns and the outer V-columns are tied with tie steel pipes to form an internal and external integral force transmission system, and the inner ring truss is installed. The outer ring truss and the inner ring truss are connected and installed through cross beams. This application utilizes its own structural system, adopts the unilateral outside without support method, optimizes and improves the installation sequence of the components according to the principle of giving priority to the construction on the side of the center of gravity, so that the center of gravity of the structure always remains inward, and thus the installation of the complete structure is completed to form a complete force system.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and particularly to a construction method for the outer side of a ring truss without a falsework on one side. Background Art

[0002] The steel structure truss construction technology, as a treasure in the field of modern architecture, makes ingenious use of the dual advantages of high strength and light weight of steel, providing the possibility for the efficient construction of large-span and complex structures. Through the integration of precise design and exquisite welding technology, it not only ensures the stability and safety of the structure, but also shines in large-scale engineering projects such as stadiums, bridges, and industrial factories, demonstrating its unparalleled practicality and aesthetic value.

[0003] During the installation of the high-zone truss, in the face of a large-volume, heavy-weight, and unstable construction environment, traditional construction mostly adopts bilateral supports, with a large number of support structures set on both sides of the component. The support structure is complex, taking up a large amount of space at the construction site. Excessive support structures bring a large number of construction obstacles and material waste, resulting in high economic costs. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a construction method for the outer side of a ring truss without a falsework on one side in view of the above-mentioned deficiencies of the prior art. This construction method for the outer side of a ring truss without a falsework on one side utilizes its own structural system, adopts a non-support method on the outer side of one side, abandons the traditional practice of setting a large number of support structures on both sides of the component, optimizes and improves the installation sequence of the component according to the principle of giving priority to the construction on the center of gravity side, so that the center of gravity of the structure always remains inward, and thus completes the installation of the complete structure to form a complete force system. Moreover, during the installation of the inner ring truss, the outer ring truss, and the cross beam, the original components can support independently, and at the same time, a number of installation stability measures are adopted to improve the force transfer system and keep the center of gravity inward.

[0005] To solve the above technical problem, the technical solution adopted by the present invention is: a construction method for the outer side of a ring truss without a falsework on one side, including the following steps:

[0006] Step 1: Conduct pre-construction simulation analysis and center of gravity distribution analysis on the installation of the pre-construction structure, the inner structure, the outer structure, and the cross beam to ensure that the installation is carried out with the center of gravity always remaining in an inward state.

[0007] Step 2: Based on the ANSYS finite element simulation analysis, conduct in-depth design on the structural components to determine the installation sequence, installation position, installation form, and installation measures; the installation sequence gives priority to the construction on the center of gravity side. Based on the pre-construction structure, the installation of the inner structure is given priority, followed by the installation of the outer structure, and finally the installation of the cross beam.

[0008] Step 3: Based on the in-depth design, install the inner temporary support falsework, the universal movable hinge support, and the main structure to carry out the construction preparation work.

[0009] Step 4: After the above construction is completed, install the inner ring truss and the inner V-columns successively.

[0010] Step 5: Install the outer V-columns. After the installation is completed, use tie steel pipes to tie the inner V-columns and the outer V-columns to form an internal and external integral force transmission system, and then install the outer ring truss.

[0011] Step 6: Connect and install the outer ring truss and the inner ring truss through cross beams.

[0012] Step 7: After the connection and installation of the cross beams are completed, install the high-vanadium cable connection components, and apply prestress tension to the high-vanadium cables between the V-columns.

[0013] Furthermore, during the whole process of installing the inner ring truss and the outer ring truss, keep the center of gravity inward. During the whole installation process, use the inner temporary support bracket for temporary support, and transmit the force to the main structure.

[0014] Preferably, the inner ring truss and the outer ring truss are installed in sections. Each section of the ring truss has a different cross-section and weight. After simulation analysis and structural calculation, it is confirmed that the insertion time for installing the outer ring truss is after 3 sections of the inner ring truss are installed, so as to reduce the outward offset of the center of gravity when installing the outer ring truss, ensure the safety during the installation process, and effectively avoid the structural instability outward.

[0015] Furthermore, in Step 3, the construction preparation work is specifically the installation of the pre-construction structure: the pre-construction structure includes a universal movable hinge support, the main structure, and the inner temporary support bracket; the main structure includes a stepped grandstand plate provided on one side thereof, and the stepped grandstand plate extends towards the inner temporary support bracket; install the inner temporary support bracket on the stepped grandstand plate of the main structure, and install the universal movable hinge support on the main structure tabletop.

[0016] Furthermore, in Step 3, the bottom of the inner temporary support bracket adopts a steel structure support force transmission system; the steel structure support force transmission system includes a structural embedded plate A, a support distribution beam, a support column, and a structural embedded plate B; a support distribution beam is provided at the bottom of the inner temporary support bracket, a support column is provided on the side of the support distribution beam away from the main structure, the side of the support distribution beam close to the main structure is correspondingly connected to a stepped grandstand plate through the structural embedded plate A, and the bottom of the support column is correspondingly connected to another stepped grandstand plate through the structural embedded plate B.

[0017] Furthermore, in Step 3, embedded steel parts are provided on the main structure tabletop, and the universal movable hinge support is welded to the main structure tabletop through the embedded steel parts; use a support limit plate to temporarily fix the universal movable hinge support.

[0018] Further, in Step 4, hoist the inner ring truss and install it on top of the inner temporary support falsework; hoist the inner V-columns, install the lower ends of the inner V-columns on the universal movable hinge supports, and support and connect the upper ends to the bottom of the inner ring truss. After the upper ends of the inner V-columns are supported and connected in place, carry out welding.

[0019] Further, in Step 5, hoist the outer V-columns, install the lower ends of the outer V-columns on the universal movable hinge supports, and tie and connect the upper positions of the outer V-columns and the lower positions of the inner V-columns with tie steel pipes; hoist the outer ring truss and install it on top of the outer V-columns.

[0020] Further, in Step 5, the flat joints at the connection between the outer V-columns and the inner V-columns are connected and fixed by welding; after the outer ring truss is installed in place, it is fixed by welding.

[0021] Further, it also includes Step 8: The inner ring truss and the outer ring truss are closed; the tie steel pipes are removed; the inner temporary support falsework and the support limit plates are unloaded and removed.

[0022] The present invention has the following beneficial effects:

[0023] 1. This application utilizes its own structural system, adopts the method of no support on the outer side of one side, abandons the traditional practice of setting a large number of support structures on both sides of the components, optimizes and improves the installation sequence of the components according to the principle of giving priority to the construction on the center of gravity side, so that the center of gravity of the structure always remains inward, and thus completes the installation of the complete structure to form a complete force system. Moreover, during the installation of the inner ring truss, the outer ring truss and the cross beam, the original components can support independently, and at the same time, a number of installation and stability measures are adopted to improve the force transmission system and keep the center of gravity inward. Compared with the traditional practice, it can not only effectively reduce the space occupation at the construction site, avoid the construction obstacles and material waste caused by excessive support structures, but also greatly save the economic cost, saving 65% of the economic cost compared with the traditional installation method.

[0024] 2. Through ANSYS finite element structural verification, it is confirmed the applicability of its installation method to no support on the outer side of one side and the preconditions for the use of the installation method, and at the same time, it can ensure that the components can avoid construction risks to the greatest extent during the installation process; the overall implementation method is gradually completed in the order of "construction simulation - detailed design - on-site construction". By carrying out structural calculations and installation construction simulation analysis on the installation, the feasibility of the plan and the deepening of the measures are confirmed.

[0025] 3. Using tie round pipes as installation measure members can improve the force system, form triangular force transmission, and further enhance the structural safety and stability; after the connection and installation of the cross beam are completed, the installation of the high-vanadium cable connecting members is carried out, and high-vanadium cable prestress tensioning is adopted between the V-columns. The high-vanadium cable connecting members are permanent structures, which are used to improve the support safety and stability of the V-columns.

[0026] 4. The tie steel pipes are temporary measures. After the high-vanadium cable prestress tensioning is carried out between the V columns, the tie steel pipes are removed. The inner temporary support scaffold and the support limit plate of the bearing are temporary measures. After the complete structure is formed, the inner temporary support scaffold and the support limit plate of the bearing are unloaded and removed. The removal stage is convenient, fast, economical and practical, and further reduces material loss and waste. Description of the Drawings

[0027] Figure 1 : Schematic diagram of the construction of the main structure in the pre-construction structure.

[0028] Figure 2 : Schematic diagram of the construction of the inner temporary support scaffold in the pre-construction structure.

[0029] Figure 3 : Schematic diagram of the construction of the inner ring truss in the installation of the inner structure.

[0030] Figure 4 : Schematic diagram of the construction of the inner V column in the installation of the inner structure.

[0031] Figure 5 : Schematic diagram of the construction of the outer V column and the tie steel pipes in the installation of the outer structure.

[0032] Figure 6 : Schematic diagram of the construction of the outer ring truss in the installation of the outer structure.

[0033] Figure 7 : Schematic diagram of the construction of the crossbeam installation.

[0034] Figure 8 : Schematic diagram of the construction of the temporary consolidation measure of the universal movable hinge bearing.

[0035] Figure 9 : Schematic diagram of the construction of the steel structure support force transmission system at the bottom of the inner temporary support scaffold.

[0036] Figure 10 : Three-dimensional schematic diagram of the closure of the inner ring truss and the outer ring truss.

[0037] Among them are: 1. Universal movable hinge bearing; 2. Inner V column; 3. Inner ring truss; 4. Outer V column; 5. Outer ring truss; 6. Tie steel pipe; 7. Inner temporary support scaffold; 8. Main structure; 9. Structural embedded plate A; 10. Support distribution beam; 11. Support column; 12. Support limit plate; 13. Crossbeam; 14. Structural embedded plate B; 15. Intersection construction node of the inner and outer trusses. Specific Embodiments

[0038] The present invention will be further described in detail below in conjunction with the drawings and specific preferred embodiments.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "left side", "right side", "upper part", "lower part", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not represent the importance of components, so it cannot be understood as a limitation to the present invention. The specific dimensions adopted in this embodiment are only for illustrating the technical solution by way of example and do not limit the protection scope of the present invention.

[0040] A construction method for the outside of the ring truss without a falsework on one side includes the installation of the pre-construction structure, the installation of the inner structure, the installation of the outer structure, and the installation of the cross beam.

[0041] The installation of the pre-construction structure is as Figure 1-2 shown. The pre-construction structure includes a universal movable hinge support 1, a main structure 8, and an inner temporary support falsework 7; the main structure includes a stepped grandstand plate provided on one side thereof, and the stepped grandstand plate extends towards the inner temporary support falsework 7 for supporting the inner temporary support falsework 7.

[0042] Install the inner temporary support falsework 7 on the stepped grandstand plate of the main structure 8, and install the universal movable hinge support 1 on the main structure table top.

[0043] The installation of the inner structure is as Figure 3-4 shown. The inner structure includes an inner V-column 2 and an inner ring truss 3; hoist the inner ring truss 3 and install it on the top of the inner temporary support falsework 7; hoist the inner V-column 2, install the lower end of the inner V-column 2 on the universal movable hinge support, and support and connect the upper end to the bottom of the inner ring truss 3.

[0044] The installation of the outer structure is as Figure 5-6 shown. The outer structure includes an outer V-column 4, a tie steel pipe 6, and an outer ring truss 5; hoist the outer V-column 4, install the lower end of the outer V-column 4 on the universal movable hinge support, and tie the upper position of the outer V-column and the lower position of the inner V-column with a tie steel pipe; hoist the outer ring truss and install it on the top of the outer V-column.

[0045] The installation of the cross beam is as Figure 7 shown. Install the cross beam 13, and connect the two ends of the cross beam to the inner ring truss and the outer ring truss respectively.

[0046] This construction method adopts the unilateral outer side without support method, abandoning the traditional practice of setting a large number of support structures on both sides of the component. According to the principle of giving priority to the construction on the center of gravity side, the installation sequence of the component is optimized and improved. Specifically: on the basis of the installation of the pre-construction structure, the inner structure is installed first, then the outer structure is installed, and finally the cross beam is installed, so that the center of gravity of the structure always remains inward, and the installation of the complete structure is completed accordingly, forming a complete force-bearing system. Moreover, during the installation of the inner ring truss, the outer ring truss and the cross beam, the original components can support independently, and at the same time, a number of installation stability measures are adopted to improve the force transmission system and keep the center of gravity inward.

[0047] In one of the preferred embodiments, through structural calculation of the installation and simulation analysis of the installation construction, the feasibility of the plan and the deepening of the measures are confirmed, and the overall implementation method is gradually completed in the order of "construction simulation - detailed design - on-site construction".

[0048] Step 1: Conduct preliminary construction simulation analysis and center of gravity distribution analysis on the installation of the pre-construction structure, the inner structure, the outer structure, and the cross beam to ensure that the installation is carried out with the center of gravity always remaining inward.

[0049] The construction simulation analysis and center of gravity distribution analysis adopt ANSYS finite element simulation analysis. Through ANSYS finite element simulation analysis, the structure is verified to determine the feasibility and safety of the method, providing data support for the detailed design of the structure.

[0050] On the basis of the installation of the pre-construction structure, for the three working conditions of the installation of the inner structure, the outer structure, and the cross beam, the calculation of the center of gravity position is carried out. After extracting data through simulation analysis, the data details are shown in Table 1 below:

[0051] Table 1

[0052] Operating condition Center of gravity position Distance from the center of the universal movable hinge support (m) Inner structure installation Inner V column 7.136 Outer structure installation Inner V column 2.651 Crossbeam installation Inner V column 2.471

[0053] The working condition of the installation of the inner structure is as Figure 3-4 shown. The overall center of gravity of the inner ring truss falls inside, and the distance from the center of gravity position to the center of the universal movable hinge support is 7.136m. In this working condition, the inner structure is supported by the inner temporary support falsework and the force is transmitted to the main structure.

[0054] The working condition of the installation of the outer structure is as Figure 5-6 shown. After the installation of the outer ring truss is completed, the center of gravity of the structure still remains inside, and the distance from the center of gravity position to the center of the universal movable hinge support is 2.651m; in this working condition, the outer ring truss has a unilateral high-altitude supportless falsework, which directly falls on the outer V column. The center of gravity of the overall structure is inward, and the structural stiffness of the inner V column and the outer V column can support the installation of the inner ring truss and the outer ring truss, and form a complete overall force transmission system to ensure the safety and reliability of the structure.

[0055] Furthermore, the installation position of the tie steel pipes is determined through ANSYS finite element simulation analysis for this working condition. Using the tie steel pipes as the installation measure members can improve the force system. The tie steel pipes tie the outer V-columns and conduct the force to the inner side, forming a triangular force transmission, which enhances the structural stability and safety.

[0056] Furthermore, preferably, the inner ring truss and the outer ring truss are installed in sections. Each section of the ring truss has different cross-sections and weights. After simulation analysis and structural calculation, it is confirmed that the installation insertion time of the outer ring truss is after 3 sections of the inner ring truss are installed, so as to reduce the amount of the center of gravity shifting outwards when installing the outer ring truss, ensure the safety during the installation process, and effectively avoid the structural instability outwards.

[0057] The installation working condition of the cross beam is as Figure 7 shown. The two ends of the cross beam are respectively connected to the inner ring truss and the outer ring truss. This working condition completes the connection of the complete structure, and the center of gravity of the complete structure still remains inside, and the distance from the center of gravity position to the center of the universal movable hinge support is 2.471 m.

[0058] Through ANSYS finite element structural verification, the applicability of the construction method of no falsework on one side outside the ring truss to the situation of no support on one side and the precondition of the installation method are verified. At the same time, it can ensure that the components can avoid construction risks to the greatest extent during the installation process.

[0059] Step 1 completes the construction simulation. Through ANSYS finite element simulation analysis, the center of gravity positions of each working condition are measured, providing data support for the subsequent structural detailed design. The results show that the installation of each construction structure can ensure that the center of gravity position of the structure always leans inwards. The optimized installation sequence forms a complete force system, and the construction method is feasible and safe.

[0060] Furthermore, Step 2: Based on ANSYS finite element simulation analysis, conduct detailed design on the structural components to determine the installation sequence, installation position, installation form, and installation measures; the installation sequence is to construct on the side of the center of gravity first. Based on the pre-constructed structure, install the inner structure first, then the outer structure, and finally the cross beam.

[0061] This step completes the detailed design, determining the installation sequence, installation position, installation form, and installation measures. Among them, the installation sequence is to construct on the side of the center of gravity first to ensure that the center of gravity leans inwards throughout the installation process of the inner and outer ring trusses. At the same time, a number of installation stability measures are adopted to further improve the force transmission system and keep the center of gravity leaning inwards.

[0062] Furthermore, Step 3: Based on the detailed design, install the inner temporary support falsework, the universal movable hinge support and the main structure, and carry out the construction preparation work.

[0063] The construction preparation work specifically involves the installation of the pre-construction structure: such as Figure 1-2 As shown, the pre-construction structure includes a universal movable hinge support 1, a main structure 8, and an inner temporary support bracket 7; the main structure includes a stepped stand plate provided on one side thereof, and the stepped stand plate extends towards the inner temporary support bracket 7 for supporting the inner temporary support bracket 7.

[0064] Install the inner temporary support bracket 7 on the stepped stand plate of the main structure 8, and install the universal movable hinge support 1 on the main structure tabletop.

[0065] Preferably, as Figure 9 shown, the bottom of the inner temporary support bracket 7 adopts a steel structure support force transmission system, which has excellent vertical load support capacity and anti-overturning capacity.

[0066] Among them, the steel structure support force transmission system includes a structural embedded plate A9, a support distribution beam 10, a support column 11, and a structural embedded plate B14.

[0067] Preferably, the structural embedded plate A9 and the structural embedded plate B14 are pre-embedded in the stepped stand plate in advance to realize the welded connection between the inner temporary support bracket and the stepped stand plate.

[0068] Preferably, a support distribution beam 10 is provided at the bottom of the inner temporary support bracket 7, and a support column is provided on the side of the support distribution beam 10 away from the main structure. The structural force is transmitted to the stepped stand plate of the main structure through the support distribution beam 10 and the support column 11.

[0069] Preferably, one side of the support distribution beam 10 close to the main structure is correspondingly connected to a stepped stand plate through the structural embedded plate A9, and the bottom of the support column is correspondingly connected to another stepped stand plate through the structural embedded plate B14.

[0070] Preferably, the inner temporary support bracket 7 is welded to the support distribution beam 10.

[0071] Preferably, the support distribution beam 10 is welded to the support column.

[0072] Preferably, the support distribution beam 10 is welded to the structural embedded plate A9.

[0073] Preferably, the support column 11 is welded to the structural embedded plate B14.

[0074] Furthermore, as Figure 8As shown in the figure, embedded steel parts are arranged on the main structure tabletop. The embedded steel parts are buried before the concrete pouring. The universal movable hinge support is welded to the main structure tabletop through the embedded steel parts. According to the design requirements, during the installation process, high-precision measuring instruments are required to check its position, elevation and angle before installation. At the same time, the support limit plate 12 is used to temporarily consolidate the universal movable hinge support 1 to limit the structural deformation and ensure that the installation process of the inner ring truss and the outer ring truss remains in a rigid state.

[0075] Preferably, the universal movable hinge support 1 is installed on the main structure tabletop by welding.

[0076] Furthermore, after the construction preparation work is completed, the inner structure installation is preferred.

[0077] Step 4: After the above construction is completed, the inner ring truss and the inner V-column are installed successively.

[0078] This step is the inner structure installation. As Figure 3-4 shown, the inner structure includes the inner V-column 2 and the inner ring truss 3. The inner ring truss 3 is hoisted and installed on the top of the inner temporary support bracket 7. The inner V-column 2 is hoisted. The lower end of the inner V-column 2 is installed on the universal movable hinge support, and the upper end is supported and connected to the bottom of the inner ring truss 3.

[0079] As Figure 3 shown, when hoisting the inner ring beam, a 500T large crawler crane is required for hoisting construction. It is installed on the top of the inner temporary support bracket for position control. After measurement and verification, it is installed at the designed position.

[0080] As Figure 4 shown, the lower end of the inner V-column is hinged, and after the upper end is supported and connected in place, welding is carried out.

[0081] Furthermore, after the inner structure installation is completed, the outer structure installation is carried out.

[0082] Step 5: Install the outer V-column. After the installation is completed, tie steel pipes are used to tie the inner V-column and the outer V-column to form an internal and external integral force transmission system, and then install the outer ring truss.

[0083] This step is the outer structure installation. As Figure 5-6 shown, the outer structure includes the outer V-column 4, the tie steel pipe 6, and the outer ring truss 5. The outer V-column 4 is hoisted. The lower end of the outer V-column 4 is installed on the universal movable hinge support. The upper position of the outer V-column and the lower position of the inner V-column are tied by the tie steel pipe. The outer ring truss is hoisted and installed on the top of the outer V-column.

[0084] Furthermore, using tie steel pipes as installation measure members can improve the force system. The tie steel pipes tie the outer V-columns and transmit the force to the inside, forming a triangular force transmission, further enhancing the structural safety.

[0085] Preferably, the connection between the outer V-column and the inner V-column is a flush joint and is fixed by welding.

[0086] As Figure 6 shown, hoist the outer ring truss 5 and install it on the top of the outer V-column 4. Perform position control. After measurement and verification, install it to the designed position. After installation in place, fix it by welding.

[0087] The single-sided high-altitude unsupported falsework of the outer ring truss directly rests on the outer V-column, saving the support falsework of the outer V-column, effectively reducing the space occupation at the construction site, and avoiding construction obstacles caused by excessive support structures. Moreover, the structural stiffness of the outer V-column and the inner V-column can support the installation of the inner ring truss and the outer ring truss, forming an integral and complete force transmission system.

[0088] Furthermore, after the installation of the outer structure is completed, install the cross beam.

[0089] Step Six: Connect and install the outer ring truss and the inner ring truss through the cross beam.

[0090] As Figure 7 shown, perform the connection and installation of the cross beam. The two ends of the cross beam are respectively connected to the inner ring truss and the outer ring truss.

[0091] Preferably, the connection and installation method of the cross beam is a welding connection method.

[0092] The above steps complete the construction of the single-sided high-altitude unsupported falsework of the outer side of the ring truss. This construction improves the installation sequence. The installation sequence gives priority to the construction of the center of gravity side. Based on the pre-constructed structure, the installation of the inner structure is prioritized, followed by the installation of the outer structure, and finally the installation of the cross beam. During the whole process of installing the inner ring truss and the outer ring truss, the center of gravity is kept inside. During the whole installation process, temporary support is carried out through the inner temporary support falsework, and the force is transmitted to the main structure.

[0093] In one of the preferred embodiments, further:

[0094] Step Seven: After the connection and installation of the cross beam are completed, install the high-vanadium cable connection members, and apply prestress tension to the high-vanadium cables between the V-columns.

[0095] The high-vanadium cable connection members are permanent structures, which are used to improve the support safety and stability of the V-columns.

[0096] Step Eight: The inner ring truss and the outer ring truss are closed; remove the tie steel pipes; unload and remove the inner temporary support falsework and the support limit plate.

[0097] The inner ring truss and the outer ring truss are closed; as Figure 10 shown, the inner ring truss and the outer ring truss are closed through the inner and outer truss interpenetration construction joint 15.

[0098] The tie steel pipe is a temporary measure. After the prestress tensioning of the high-vanadium cable is adopted between the V columns, the tie steel pipe is removed.

[0099] The inner temporary support bracket and the support limit plate are temporary measures. After the complete structure is formed, the inner temporary support bracket and the support limit plate are unloaded and removed.

[0100] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0101] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.

Claims

1. A construction method for the outside single-sided tyreless bracket of a ring truss, characterized in that: It includes the following steps: Step 1: Conduct pre-construction simulation analysis and center-of-gravity distribution analysis on the installation of the pre-construction structure, the installation of the inner structure, the installation of the outer structure, and the installation of the cross beam to ensure that the installation is carried out with the center of gravity always remaining inward; Step 2: Based on the ANSYS finite element simulation analysis, conduct in-depth design on the structural components to determine the installation sequence, installation location, installation form, and installation measures; the installation sequence is to give priority to the construction on the center-of-gravity side. Based on the pre-construction structure, give priority to the installation of the inner structure, followed by the installation of the outer structure, and finally the installation of the cross beam; Step 3: Based on the in-depth design, install the inner temporary support bracket, the universal movable hinge support, and the main structure, and carry out construction preparation work; Step 4: After completing the above construction, install the inner ring truss and the inner V-column successively; Step 5: Install the outer V-column. After the installation is completed, use tie steel pipes to tie the inner V-column and the outer V-column to form an internal and external integral force transmission system, and install the outer ring truss; Step 6: Connect and install the outer ring truss and the inner ring truss through the cross beam; Step 7: After the connection and installation of the cross beam are completed, install the high-vanadium cable connection components, and apply high-vanadium cable prestress tension between the V-columns.

2. The construction method for the outside single-sided non-shuttering of the ring truss according to claim 1, characterized in that: During the whole process of installing the inner ring truss and the outer ring truss, the center of gravity remains inward, and the whole installation process is temporarily supported by the inner temporary support bracket, and the force is transmitted to the main structure.

3. A construction method for the outside single-side tireless support of a ring truss according to claim 2, characterized in that: The inner ring truss and the outer ring truss are installed in sections. Each section of the ring truss has different cross-sections and weights. After simulation analysis and structural calculation, it is confirmed that the insertion time for installing the outer ring truss is after 3 sections of the inner ring truss are installed, so as to reduce the outward offset of the center of gravity when installing the outer ring truss, ensure the safety during the installation process, and effectively avoid the outward instability of the structure.

4. A construction method for the outer side of a ring truss without a falsework on one side according to claim 1, characterized in that: In Step 3, the construction preparation work is specifically the installation of the pre-construction structure: The pre-construction structure includes the universal movable hinge support, the main structure, and the inner temporary support bracket; the main structure includes a stepped grandstand plate provided on one side thereof, and the stepped grandstand plate extends towards the inner temporary support bracket; install the inner temporary support bracket on the stepped grandstand plate of the main structure, and install the universal movable hinge support on the main structure tabletop.

5. A construction method for the outer side of a ring truss without a falsework on one side according to claim 4, characterized in that: In Step 3, the bottom of the inner temporary support bracket adopts a steel structure support force transmission system; the steel structure support force transmission system includes structural embedded plate A, support distribution beam, support column, and structural embedded plate B; a support distribution beam is provided at the bottom of the inner temporary support bracket, a support column is provided on the side of the support distribution beam away from the main structure, the side of the support distribution beam close to the main structure is correspondingly connected to a stepped grandstand plate through structural embedded plate A, and the bottom of the support column is correspondingly connected to another stepped grandstand plate through structural embedded plate B.

6. The construction method for the outside single-sided tireless frame of the ring truss according to claim 4, characterized in that: In Step 3, embedded steel parts are provided on the main structure tabletop, and the universal movable hinge support is welded to the main structure tabletop through the embedded steel parts; a support limit plate is used to temporarily fix the universal movable hinge support.

7. A construction method for the outer side of a ring truss without a falsework on one side according to claim 1, characterized in that: In Step 4, hoist the inner ring truss and install it on the top of the inner temporary support bracket; hoist the inner V-column, install the lower end of the inner V-column on the universal movable hinge support, and support and connect the upper end to the bottom of the inner ring truss. After the upper end of the inner V-column is supported and connected in place, carry out welding.

8. A construction method for the outside single-sided tireless frame of a ring truss according to claim 1, characterized in that: In step five, the outer V-column is hoisted, and the lower end of the outer V-column is installed to the universal hinge support. The upper position of the outer V-column and the lower position of the inner V-column are tied together by a tie steel pipe; the outer ring truss is hoisted and installed to the top of the outer V-column.

9. A construction method for the outer side of a ring truss without a falsework on one side according to claim 8, characterized in that: In step five, the outer V-pillar and the inner V-pillar are connected at the joint by flat seams and fixed by welding; after the outer ring truss is installed in place, it is fixed by welding.

10. A construction method for the outer side of a ring truss without a falsework on one side according to claim 6, characterized in that: The step eight is also included: completing the jointing of the inner ring truss and the outer ring truss; removing the tie steel pipes; and unloading and removing the inner temporary support frame and support limit plates.

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