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CN-121976619-A - Roof reticulated shell assembly structure and construction method

CN121976619ACN 121976619 ACN121976619 ACN 121976619ACN-121976619-A

Abstract

The invention discloses a roof net shell assembling structure and a construction method, which belong to the technical field related to building construction technology, and comprise a plurality of drum nodes, six butt joint assemblies are fixed outside the drum nodes at equal intervals, each butt joint assembly comprises a connecting rod, an inner cylinder is fixed inside the connecting rod, four rows of telescopic springs are fixed inside the inner cylinder, the outer ends of each row of telescopic springs are fixedly connected with extrusion blocks, the extrusion blocks protrude out of the connecting rod, chord members are sleeved outside the two connecting rods, web members are sleeved outside the other four connecting rods, topology optimization is carried out on a tail plate by utilizing finite element analysis software, the preset strength and rigidity requirements are met under the target mold locking force, an integrated reinforcing rib network is designed, and meanwhile, a structure for presetting a high-strength alloy steel sleeve is designed in a casting cavity at a perforation position of the pull rod.

Inventors

  • HUO CHAOBO
  • ZHAI GUANGYAO
  • HUANG QI
  • BAI WEI
  • GONG QI
  • TIAN QI

Assignees

  • 中建四局第六建设有限公司

Dates

Publication Date
20260505
Application Date
20260317

Claims (10)

  1. 1. The roof net shell assembling structure comprises a plurality of drum nodes (2), and is characterized in that six butt joint assemblies (5) are fixed outside the drum nodes (2) at equal intervals; The butt joint assembly (5) comprises a connecting rod (51), an inner cylinder (52) is fixed inside the connecting rod (51), four rows of telescopic springs (54) are fixed inside the inner cylinder (52), the outer end of each row of telescopic springs (54) is fixedly connected with an extrusion block (53), and the extrusion blocks (53) protrude out of the connecting rod (51); Wherein the outer parts of the two connecting rods (51) are sleeved with chord members (3), and the outer parts of the other four connecting rods (51) are sleeved with web members (4).
  2. 2. Roof net shell assembling structure according to claim 1, wherein the extrusion block (53) is arranged in an arc shape towards one end of the corresponding chord member (3) and web member (4), and the diameter of the outermost end of the connecting rod (51) is smaller than the diameter of one end of the connecting rod connected with the drum node (2).
  3. 3. The roof net shell assembling structure according to claim 2, wherein both ends of the chord member (3) and the web member (4) are sleeved and fixed with the connecting rod (51) through the extrusion block (53).
  4. 4. A construction method of a roof reticulated shell assembled structure according to any one of claims 1to 3, characterized in that the construction method specifically comprises the following steps: setting up a site treatment and measurement control network, namely hardening and compacting an assembled site, and setting up an independent assembled coordinate system closed control network by using a total station to perform measurement and adjustment; secondly, on-site layout, namely laying out ground projection points of all the drum nodes (2) to an assembly site according to distribution design coordinates of the net shell drum nodes (2), and arranging assembly jig frames (1) at all the projection points; step three, according to the position of the spliced jig frame (1), sequentially fixing the drum joints (2) with the spliced jig frame (1); Assembling each chord member (3) and each web member (4) with the drum joint (2), sleeving the end parts of the chord members (3) and the web members (4) on the outer parts of connecting rods (51) corresponding to the outer parts of the drum joint (2), and fixing the end parts of the chord members (3) and the web members (4) by utilizing restoring force generated by extruding telescopic springs (54) through extruding blocks (53); and fifthly, after the fixing of all the chords (3) and the web members (4) is completed, the chords (3) and the web members (4) are welded and fixed with the corresponding drum nodes (2).
  5. 5. The construction method of the roof net shell assembling structure according to claim 4, wherein the assembling jig (1) comprises a supporting bottom plate (11), a sleeve seat (12) is fixedly arranged at the top of the supporting bottom plate (11), a movable rod (13) is sleeved in the sleeve seat (12), a plurality of supporting rods (14) are arranged between the bottom edge of the movable rod (13) and the top edge of the sleeve seat (12), a connecting seat (15) is fixedly connected to the top end of the movable rod (13), a universal ball seat (16) is fixedly connected to the top of the connecting seat (15), a supporting disc (17) is fixedly arranged at the top end of the universal ball seat (16), a plurality of clamping plates (18) are slidably arranged on the top surface of the supporting disc (17), a plurality of spring rods (19) are embedded outside the clamping plates (18), and the plurality of spring rods (19) are in one-to-one correspondence under the clamping plates (18) and are connected with the clamping plates (18) through connecting rods.
  6. 6. The construction method of the assembled structure of the net shell of the roof according to claim 5, wherein the fixed end of the spring rod (19) is fixed inside the supporting disc (17), the movable end of the spring rod is positioned outside the supporting disc (17), and the connecting rod is connected with the fixed end of the spring rod (19) and fixed with the bottom of the clamping plate (18).
  7. 7. The construction method of the roof net shell assembly structure according to claim 5, wherein the supporting rod (14) comprises a threaded sleeve (141), a screw (142) is connected to the threaded sleeve (141) in a threaded manner, and a hexagonal head (143) is fixedly connected to the top end of the screw (142).
  8. 8. The construction method of the assembled structure of the net shell of the roof according to claim 7, wherein the bottom end of the threaded sleeve (141) is fixedly connected with the socket (12), and the top end of the hexagonal head (143) is connected with the bottom edge of the movable rod (13).
  9. 9. The construction method of the roof reticulated shell assembly structure according to claim 7, wherein the top surface of the supporting disc (17) is provided with a chute, and the bottom of the clamping plate (18) is fixedly provided with a sliding block matched with the chute.
  10. 10. Construction method of roof reticulated shell assembly structure according to claim 9, characterized in that the clamping plate (18) is arranged in an L shape, and the side of the joint of the clamping plate and the drum node (2) is arranged in an arc shape.

Description

Roof reticulated shell assembly structure and construction method Technical Field The invention belongs to the technical field related to building construction technology, and particularly relates to a roof reticulated shell assembly structure and a construction method. Background In space steel construction engineering, the large-span single-layer reticulated shell structure is widely applied to roofs of public buildings such as stadiums, transportation hubs, culture centers and the like due to attractive appearance and good space permeability. Such latticed shells are typically formed by connecting a plurality of rods through complex drum nodes, and the field installation accuracy directly determines the safety and building effect of the final form of the structure. At present, aiming at the construction of the net shell, a process of ground block assembly, integral hoisting or sliding is often adopted. The ground assembly is a key process, and the core of the ground assembly is to provide stable and accurate temporary support for the drum nodes of the net shell. In the prior art, fixed splicing jig frames are mostly adopted, namely, drum nodes are simply placed on a preset rigid supporting platform. The method has the obvious defects that firstly, the drum nodes are only in gravity contact with the jig frame, effective lateral constraint is lacked, sliding or micro-displacement is very easy to occur under rod assembly, welding and environmental disturbance, so that accumulated errors of the assembly units are increased, and the subsequent high-altitude butt joint precision is seriously influenced. Secondly, the angle and the height of the supporting surface of the fixed jig frame are not usually adjustable, so that the fixed jig frame is difficult to adapt to a latticed shell structure with complex curved surfaces and different space attitudes and elevations of all nodes, and has poor universality. In addition, when the member rod is preliminarily sleeved on the drum node, an effective temporary fastening measure is also lacked, the member rod is easy to loosen, and the difficulty of accurate positioning is further increased. Disclosure of Invention The invention provides a roof reticulated shell assembling structure and a construction method, which can solve the technical problems that an assembling jig frame and a drum node in the prior art lack of effective fixing measures, the assembling sleeve structure is fixed and cannot be adjusted, and fastening measures between the drum node and a rod piece are lack. The roof reticulated shell assembling structure comprises a plurality of drum nodes, wherein six butt joint assemblies are fixed outside the drum nodes at equal intervals; The butt joint assembly comprises a connecting rod, an inner cylinder is fixed in the connecting rod, four rows of telescopic springs are fixed in the inner cylinder, the outer end of each row of telescopic springs is fixedly connected with an extrusion block, and the extrusion block protrudes out of the connecting rod; Wherein the outer parts of the two connecting rods are sleeved with chord members, and the outer parts of the other four connecting rods are sleeved with web members. As a further technical scheme of the invention, one end of the extrusion block, which faces the corresponding chord member and web member, is arranged in an arc shape, and the diameter of the outermost end of the connecting rod is smaller than that of one end of the connecting rod, which is connected with the drum node. As a further technical scheme of the invention, both ends of the chord member and the web member are sleeved and fixed with the connecting rod through the extrusion blocks. The construction method of the roof reticulated shell assembled structure specifically comprises the following steps: setting up a site treatment and measurement control network, namely hardening and compacting an assembled site, and setting up an independent assembled coordinate system closed control network by using a total station to perform measurement and adjustment; Secondly, on-site layout, namely laying out ground projection points of all drum nodes to an assembly site according to the distribution design coordinates of the net shell drum nodes, and arranging assembly jig frames at all the projection points; step three, sequentially fixing the drum joints and the spliced jig frame according to the positions of the spliced jig frame; Splicing the chord members and the web members with the drum joints, sleeving the end parts of the chord members and the web members outside connecting rods corresponding to the outside of the drum joints, and fixing the end parts of the chord members and the web members by using restoring force generated by extruding the telescopic springs through the extruding blocks; and fifthly, after the fixation of all the chord members and the web members is completed, welding and fixing the chord members and the web members with correspo