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CN-122013882-A - Core barrel flange bolt connection modularized full-assembly string truss structure system and assembly method

CN122013882ACN 122013882 ACN122013882 ACN 122013882ACN-122013882-A

Abstract

The application discloses a core barrel flange bolt connection modularized full-assembled string truss structure system and an assembly method, and belongs to the field of structural engineering. The system mainly comprises a modularized assembly truss, a cable strut system and connecting nodes. Through adopting the club module of standardized design, utilize core section of thick bamboo flange bolt to carry out on-the-spot assembly, replace traditional welding process, realized the full assembly of structure, can dismantle and can restore. The application effectively solves the problem of compression bar instability caused by overlong bar parts in the upper structure because of the increase of the structural span, and realizes the span lifting. The design has the advantages of high modularization, convenient construction, environmental protection and the like, remarkably improves the construction efficiency and engineering quality, reduces the influence on the environment, and is suitable for intelligent construction and industrial application of a large-span space structure.

Inventors

  • ZHANG AILIN
  • Wang Caisen
  • CHEN GUANHUA
  • Wang Liuhaoxiang
  • DAI YUCHEN

Assignees

  • 北京工业大学

Dates

Publication Date
20260512
Application Date
20260412

Claims (14)

  1. 1. The utility model provides a core section of thick bamboo flange bolted connection modularization full assembly string truss structure system which characterized in that includes: the system comprises a transverse space truss (10), a longitudinal space truss (20), side trusses (30), a cable support system (40) and space truss modularized connecting nodes (50); the transverse space truss (10) and the longitudinal space truss (20) are connected in a modularized splicing mode through the space truss modularized connecting nodes (50); the cable support system (40) is arranged below the transverse space truss (10), and the stay bars (402) in the cable support system (40) are arranged right below the space truss modularized connection nodes (50); The side trusses (30) are arranged on the left side and the right side of the transverse space truss (10); The space truss modular connection node (50) comprises a hollow sphere (500), a node connecting piece (501), a flange plate (502), a round core barrel (503), a core barrel bolt (504), a flange bolt (505) and a truss rod piece (506); the node connecting piece (501) is welded to the hollow sphere (500), and the flange plate (502) is welded to the node connecting piece (501) and the truss rod piece (506); The circular core barrel (503) is inserted into the node connecting piece (501) and the truss rod piece (506), the core barrel bolt (504) penetrates through the circular core barrel (503) to connect the node connecting piece (501) with the truss rod piece (506), and the flange bolt (505) is connected with the flange plate (502) on the node connecting piece (501) and the truss rod piece (506).
  2. 2. The modular fully assembled truss bridge structure system of claim 1, wherein the transverse space truss (10) includes the space truss modular connection nodes (50) and transverse space truss module units (60), and the longitudinal space truss (20) includes the space truss modular connection nodes (50) and longitudinal space truss module units (70).
  3. 3. The modular fully assembled truss bridge structure system of claim 2, wherein the transverse space truss module unit (60) and the longitudinal space truss module unit (70) are each comprised of two upper chords and one lower chord, forming an inverted triangle section structure; The upper chord member is connected with the lower chord member through a web member, and an upper chord node and a lower chord node are respectively formed at the connection points of the upper chord member, the web member, the lower chord member and the web member.
  4. 4. The modular fully assembled truss bridge system of claim 2, wherein the flanges (502) are welded to both the upper and lower chords of the transverse space truss module units (60) and the longitudinal space truss module units (70).
  5. 5. The modular fully assembled truss string structure system of claim 2, wherein the other end of the node connection member (501) with one end welded with the flange plate (502) is welded to the hollow sphere (500) for connecting the chords of the space truss module unit; The node connecting piece (501) which is not welded with the flange plate (502) is welded on the hollow sphere (500) and is used for connecting web members of the space truss module unit; the node connection (501) with the flange plate (502) is connected with a chord with the flange plate (502) through the core barrel bolt (504), the flange bolt (505) and the circular core barrel (503); the web member is connected with the node connection (501) through bolts and the round core barrel (503).
  6. 6. The modular fully assembled truss string structure system of claim 1, wherein each of the transverse space trusses (10) is arranged in longitudinal order, and the longitudinal space truss module units (70) are connected vertically and longitudinally thereto.
  7. 7. The modular fully assembled truss string structure system of claim 1, wherein the transverse space truss (10) is formed by splicing n transverse space truss module units (60), wherein n is a natural number.
  8. 8. The modular fully assembled truss structure system of claim 7, wherein the modular fully assembled truss structure system of core flange bolted construction is assembled from m truss modules (70) of said transverse space truss (10), (n-1) (m-1) blocks and 2 (m-1) truss modules (30) of said side truss, where m is a natural number.
  9. 9. The cartridge flange bolted modular fully assembled truss work structure system of claim 1, wherein the cable support system (40) is comprised of a horizontal cable (400), a diagonal cable (401) and the brace bar (402); The diagonal cable (401) is connected between the main node adjacent to the stay bar (402) and the bottom of the stay bar (402); the horizontal cable (400) is connected between two adjacent stay bars (402).
  10. 10. The modular fully assembled truss string structure system of claim 1, wherein the curvature during assembly is adjusted by the modular space truss connection nodes (50), and the angle between the node connection members (501) and the welded hollow spheres (500) is determined according to the high span ratio of the structure to adapt to the curved surface shape of the whole space truss structure.
  11. 11. The modular fully assembled truss string structure system of claim 1, wherein the flange plate (502) is welded perpendicularly to the central axis of the node connection member (501) or the truss member (506), and the thickness of the flange plate (502) is greater than the thickness of the welded member.
  12. 12. The modular fully assembled string truss structure system with the core barrel flange bolted connection according to claim 1, wherein the arrangement form of the cable support system (40) is characterized in that a scheme for arranging cable supports in the middle is selected according to the form and stress requirements of the transverse space truss (10) at the upper part.
  13. 13. The modular fully assembled string truss structure system with the flange bolted core tube connection according to claim 1, wherein the number of the transverse space truss module units (60) is n, the specific value of n is determined according to the curvature and the span of the structure, the transverse space truss (10) assembled by n transverse space truss module units (60) is a longitudinal assembly unit, and the specific value of m is determined according to the length of the structure.
  14. 14. A method of assembling a modular fully assembled truss string structure system according to any one of claims 1 to 13, comprising the steps of: Prefabricating all transverse space truss module units (60), longitudinal space truss module units (70), side truss frames (30) and space truss modularized connecting nodes (50) in a factory, welding node connecting pieces (501) to hollow balls (500), welding flange plates (502) to the end parts of the node connecting pieces (501) and the end parts of truss rods (506), packaging a round core barrel (503), core barrel bolts (504) and flange bolts (505) according to specifications, and simultaneously finishing fixed-length cutting and end anchor installation of stay bars (402), horizontal ropes (400) and inclined ropes (401) in a cable support system (40) in the factory; step two, transporting all prefabricated parts to a construction site, and installing a temporary support jig frame according to a design drawing; Step three, mounting transverse space trusses (10) one by one from one end, wherein transverse space truss module units (60) are spliced through space truss modularized connecting nodes (50), a round core barrel (503) is inserted into a node connecting piece (501) and truss rod pieces (506) at each node, then core barrel bolts (504) are penetrated and screwed, and finally flange bolts (505) are penetrated and screwed through a flange plate (502); Installing longitudinal space truss module units (70) after the installation of all the transverse space trusses (10) is completed, and connecting the two ends of the longitudinal space truss module units with corresponding space truss modularized connecting nodes (50) on the adjacent transverse space trusses (10) respectively; Step five, installing a side truss (30); And step six, after the whole upper truss structure is assembled, installing a cable supporting system (40) below the transverse space truss (10), fixing the top end of a supporting rod (402) under a space truss modularized connecting node (50) through bolts, connecting the horizontal cable (400) and the inclined cable (401) according to the design position, and finally applying prestress to the design value.

Description

Core barrel flange bolt connection modularized full-assembly string truss structure system and assembly method Technical Field The invention relates to the field of assembled large-span space structures, in particular to a modular fully-assembled string truss structure system with a core barrel and flange connected by bolts and an assembly method. Background The large-span space structure system and the important engineering application thereof are important marks for embodying the modernization level and comprehensive national force of the national construction industry. With the rapid development of national economy and the continuous progress of construction technology, the requirements of large public buildings such as stadiums, exhibition centers, airport terminal buildings and the like for space spans are increasing, and the continuous innovation of the large-span space structure technology is promoted. The string truss structure is used as a high-efficiency structure form with both hardness and softness, and the bending rigidity of the upper rigid truss and the tensile capacity of the lower flexible cable supporting system are ingeniously combined, so that the string truss structure has the outstanding advantages of clear force transmission path, high material utilization rate, simple and attractive structure form and the like, and is widely applied in practical engineering, particularly in the field of large-span space structures. However, existing truss string structure technology increasingly reveals its limitations in dealing with larger span challenges. First, as the span of the structure increases, the length of each truss section of the upper truss structure tends to increase. Under a complex loaded state, an overlong truss section can cause a stress mode of the truss section to be changed from a designed expected axial force main guide to a bending moment main guide, the stress performance of the whole structure can be obviously reduced by the change, and the problem of instability of a compression rod is extremely easy to be caused, so that the truss section becomes a key bottleneck for restricting the further improvement of the span of the structure. Secondly, in the existing large-span space steel structure example, the connection and the assembly of the structure are almost mainly in field welding. The traditional construction mode has serious pollution and large carbon emission, and the whole structure is not detachable and cannot be reused, so that the traditional construction mode is not suitable for the green building and the building industrialization development strategy which are vigorously carried out in the current country. Meanwhile, the stay bars in the existing prestress cable distribution scheme do not consider the distribution rule of the assembled main nodes, so that the most effective support cannot be provided for each truss section, and the exertion of the structural efficiency is further affected. To overcome the above-mentioned shortcomings, modular assembly techniques have been developed to provide a very potential solution. Modular assembly is an efficient form of assembled building with the core of enabling industrial production of building elements at the factory, followed by transport to the site for rapid assembly. The modularized assembly can integrate a plurality of scattered components into a few large modules, so that the number of on-site assembly nodes is remarkably reduced, the construction efficiency is greatly improved, the variety and the number of assembly units are reduced, and the quality control and management are facilitated. In addition, the modular unit is processed in a factory, the product quality of the modular unit can be obviously improved by depending on the precision equipment and stable environment of the factory, and the initial defect of the whole structure caused by field installation errors is effectively reduced. However, the large-span string truss structure is complex in structure, the existing modularization research is still deficient, and development of a novel modularized assembly system which can adapt to the intelligent construction concept, realize efficient assembly and improve structural performance is needed. Disclosure of Invention The invention aims to provide a core barrel flange bolt connection modularized full-assembled string truss structure system and an assembly method, which are used for solving the technical problems of large welding pollution, low assembly efficiency, insufficient modularization degree, instability of a large-span downward pressure rod and the like in the prior art. In order to solve the technical problems, the technical scheme provided by the invention is as follows: a cartridge flange bolted modular fully assembled truss string structural system comprising: The system comprises a transverse space truss, a longitudinal space truss, a side truss, a cable strut system and a space truss modulariz