CN215054431U

CN215054431U - Unequal-diameter ring truss high-altitude sectional installation fixing device

Info

Publication number: CN215054431U
Application number: CN202120864636.6U
Authority: CN
Inventors: 周元智; 梅超; 陈华周; 李毅; 汪天平; 牛群; 李婷
Original assignee: China Construction Science And Industry Co ltd
Current assignee: China Construction Science And Industry Co ltd
Priority date: 2021-04-25
Filing date: 2021-04-25
Publication date: 2021-12-07
Anticipated expiration: 2031-04-25

Abstract

The utility model relates to the technical field of building construction, in particular to a high-altitude sectional installation and fixation device for a ring truss with different diameters, which comprises a supporting platform, a supporting frame and two horizontal connecting beams, wherein the middle part of the supporting frame is a hollow area, the two horizontal connecting beams are arranged in the hollow area in a crossed manner, and the lower chord of the ring truss is suitable for being supported on the supporting frame; and one end of each connecting piece is connected with the intersection position of the two horizontal connecting beams and is distributed at intervals along the circumference, and the other end of each connecting piece is connected with the upper chord of the ring truss and is distributed at intervals along the circumference so as to apply supporting force to the upper chord of the ring truss or apply tension force with inward component force in the radial direction. The bowl-shaped ring truss is characterized in that two horizontal connecting beams which are arranged in a crossed mode are arranged in the hollow-out area of the supporting frame, a plurality of connecting pieces are arranged at the positions of the horizontal connecting beams along the circumferential direction, and the upper chord is connected with the upper chord of the truss unit through the connecting pieces to apply supporting force or pulling force to the upper chord, so that the problem that the bowl-shaped ring truss inclines outwards when being installed in a segmented mode is solved.

Description

Unequal-diameter ring truss high-altitude sectional installation fixing device

Technical Field

The utility model relates to a construction technical field especially relates to a unequal diameter ring truss high altitude segmentation installation fixing device.

Background

In recent decades, with the rapid increase of activities such as exhibition, entertainment, sports, etc., the progress of building technology and the continuous emergence of new materials, various spatial structure forms such as net racks, net shells, thin shells, suspension cables, etc. have been widely applied and developed at a rapid pace.

With the development of society and the progress of technology, the annular truss is widely applied to public buildings. Large stadium awning systems often employ cable dome structures, thin shell support structures, outer ring net racks, large open cable domes and inner ring trusses. The inner ring truss has large span and heavy weight due to the dead weight of tens of tons to hundreds of tons or even thousands of tons, and the existing construction mode of sliding or integral lifting is mostly adopted. The slippage construction mainly moves all truss blocks of the annular truss to the designated positions of the annular rails through the translation equipment, then the annular truss blocks are lifted and installed on the support through the crane for assembly, the large slippage equipment is needed for translation work, and a wider flat area is needed. The mode of whole promotion needs carry out the burst equipment on ground, and later the rethread large-tonnage loop wheel machine carries out whole promotion, and the installation degree of difficulty is big.

The support is required to be supported by means of a support or a support when the ring truss is installed, the existing support for installing the ring truss is a standard frame type support jig frame, and the support jig frame can tilt outwards when a bowl-shaped ring truss structure with large upper chord diameter and small lower chord diameter and unequal diameters is installed at high altitude, so that much inconvenience is brought to construction and installation, and the installation difficulty is greatly improved. The utility model aims at providing a high altitude segmentation installation method and installation fixing device of bowl type ring truss that varies diameter suitable for last chord diameter is big, the last chord diameter is little in order to solve above-mentioned technical problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the installation of bowl type ring truss is inconvenient to adopt standard frame type support bed-jig for the installation of the annular truss among the prior art, and the unequal diameter ring truss high altitude segmentation installation fixing device who is applicable to that the last chord diameter is big, the lower chord diameter is little that provides.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model discloses a different diameter ring truss high altitude segmentation installation fixing device, the ring truss comprises two at least truss units, fixing device includes:

the supporting platform comprises a supporting frame with a hollow area in the middle and two horizontal connecting beams which are arranged in the hollow area in a crossed mode, and the lower chord of the ring truss is suitable for being supported on the supporting frame;

the truss units are arranged in a radial shape, each truss unit corresponds to at least one connecting piece, one end of each connecting piece is connected with the two horizontal connecting beams, and the other end of each connecting piece is connected with the upper chord of the ring truss so as to apply supporting force to the upper chord of the ring truss or apply tension force with inward component force in the radial direction.

Optionally, the unequal-diameter ring truss high-altitude sectional installation fixing device is characterized in that the upper chord of any truss unit is correspondingly connected with two connecting pieces, and the two connecting pieces are symmetrically distributed about the midpoint of the corresponding upper chord of the truss unit.

Optionally, the unequal-diameter ring truss high-altitude subsection mounting and fixing device is characterized in that a connection point of any one of the connecting pieces and the corresponding upper chord of the truss unit is a trisection point.

Optionally, the fixing devices are installed at the high altitude in a segmented manner, and the corresponding ends of all the connecting pieces are respectively and uniformly distributed along the circumference where the upper chord is located and the circumference where the intersection position of the two horizontal connecting beams is located; or

The shape of the outer contour enclosed by all the connecting pieces is a circular truncated cone.

Optionally, the unequal-diameter ring truss high-altitude subsection mounting and fixing device is characterized in that the connecting piece is a rigid supporting piece, and an end plate with an arc-shaped end is arranged at the end of the rigid supporting piece;

and connecting plates are arranged at the crossed positions of the inner peripheral wall of the upper chord and the horizontal connecting beam, and the end plates are connected with the corresponding connecting plates through high-strength bolts.

Optionally, the unequal-diameter ring truss high-altitude sectional installation fixing device further includes:

and the positioning structure is welded and fixed on the support frame and is suitable for being welded and fixed with the inner peripheral wall and/or the outer peripheral wall of the lower chord of the ring truss so as to limit the horizontal displacement of the ring truss.

Optionally, the unequal-diameter ring truss high-altitude subsection installation fixing device is provided with a plurality of chain block pulling points arranged on the lower chord of the ring truss along the circumferential direction, and the chain block pulling points are used for being connected with chain blocks to adjust the levelness of the upper chord of the ring truss.

Optionally, the unequal-diameter ring truss high-altitude sectional installation fixing device is characterized in that two inverted chain pulling points are correspondingly arranged on the lower chord of any truss unit, and any inverted chain pulling point is a trisection point of the corresponding lower chord of the truss unit.

and the adjusting support structures are distributed at four corners of the support frame and comprise adjusting steel plate assemblies and jacks, and the adjusting steel plate assemblies and the jacks are suitable for being supported at the bottom ends of the lower chords of the ring trusses so as to adjust the elevation of the ring trusses.

the supporting upright columns are arranged at the bottom corner positions of the supporting platform and form a lattice type supporting frame with the supporting frame;

the diagonal rods are obliquely connected to two adjacent support columns or two support columns at two ends of a diagonal line.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a high altitude segmentation installation fixing device of ring truss of unequal diameter, through setting up two horizontal coupling beams that are set up alternately in the fretwork district of braced frame, through setting up a plurality of connecting pieces along circumference in horizontal coupling beam position, utilize the connecting piece to connect with the last chord of truss unit and exert holding power or pulling force to the last chord, thereby prevent the problem that camber takes place when bowl type ring truss segmentation is installed; meanwhile, the space stereoscopic impression of the structure is increased.

2. The utility model discloses a different diameter ring truss high altitude segmentation installation fixing device, every truss unit corresponds two connecting pieces, and the last chord of two connecting pieces and the truss unit that corresponds constitutes the triangle body structure, and structural stability is high, can effectively avoid because bowl type ring truss last chord diameter is greater than the last chord, brings the risk that outwards heels for the high altitude installation.

3. The utility model discloses a different diameter ring truss high altitude segmentation installation fixing device, connecting piece are rigidity support piece, and end board and last chord and level through both ends are even the roof beam and are connected, provide the rigidity support to the ring truss, and structural strength is big, takes place the problem of heeling outward when effectively preventing to install.

4. The utility model discloses a different diameter ring truss high altitude segmentation installation fixing device through addding location structure, utilizes location structure and interior circumference and/or the outer circumference of last quarter to be connected, fixes a position the truss unit, prevents to take place horizontal displacement behind the truss davit, improves the stability of structure, reduces calibration time to improve the efficiency of construction.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of an aerial sectional installation and fixation device for a ring truss with different diameters in an embodiment of the present invention;

fig. 2 is a schematic perspective view of the unequal-diameter ring truss high-altitude sectional installation fixing device and the ring truss after installation in the embodiment of the present invention (the support upright and the diagonal rods are omitted);

fig. 3 is a schematic top view of the unequal-diameter ring truss high-altitude sectional installation fixing device and the ring truss after installation in the embodiment of the present invention;

fig. 4 is a schematic side view of the unequal-diameter ring truss high-altitude sectional installation fixing device and the installed ring truss in the embodiment of the present invention;

fig. 5 is a schematic view of the sectional installation of the ring truss of the unequal-diameter ring truss high-altitude sectional installation fixing device in the embodiment of the present invention.

Description of reference numerals:

1. a fixing device; 11. a support platform; 111. a support frame; 112. horizontally connecting the beams; 12. supporting the upright post; 13. a diagonal bar; 2. a connecting member; 20. an end plate; 21. a connecting plate; 3. a positioning structure; 4. a jack; 41. adjusting the steel plate assembly; 5. a ring truss; 50-truss unit; 51. winding; 52. a lower chord; 53. a web member; 6. a protective net; 7. a safety vertical rod; 8. a safety rope.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The unequal-diameter ring truss high-altitude sectional installation and fixing device shown in fig. 1 to 5 comprises a supporting platform 11, supporting upright posts 12, inclined rods 13, a plurality of connecting pieces 2, a positioning structure 3 and an adjusting and supporting structure. Wherein, the ring truss 5 is composed of at least two truss units 50, which can be two, three, four, five, etc., and the embodiment preferably adopts five truss units 50.

Specifically, as shown in fig. 1 and 3, the supporting platform 11 includes a supporting frame 111 with a hollow area in the middle and two horizontal coupling beams 112 crosswise disposed in the hollow area, and the lower chord 52 of the ring truss 5 is adapted to be supported on the supporting frame 111. Any truss unit 50 corresponds to at least one connecting piece 2, one end of each connecting piece 2 is connected with the intersection position of two horizontal connecting beams 112 and is distributed at intervals along the circumference, and the other end of each connecting piece 2 is connected with the upper chord 51 of the ring truss 5 and is distributed at intervals along the circumference, namely, a plurality of connecting pieces 2 are distributed in a radial shape so as to apply supporting force to the upper chord 51 of the ring truss 5 or have tensile force with inward component force in the radial direction. Alternatively, the connecting member 2 may be connected to other positions of the two horizontal coupling beams 112 without being connected to the crossing position of the two horizontal coupling beams 112 but with the center of balance being located on the central axis of the ring truss 5.

Preferably, as shown in fig. 3, two connecting members 2 are connected to the upper chord 51 of any one truss unit 50, and the two connecting members 2 are symmetrically distributed about the midpoint of the upper chord of the corresponding truss unit 50. Therefore, the two connecting pieces 2 and the upper chords 51 of the truss units 50 connected with the connecting pieces form a triangular structure together, and the stability of the structure is improved.

Preferably, the connection point of any one of the connection members 2 and the upper chord 51 of the truss unit 50 corresponding thereto is a trisection point. The stress uniformity of the structure is ensured, and the stability of the structure is further improved. It should be noted that the arc lengths of the upper chord 51 and the lower chord 52 of the truss unit 50 in this embodiment and the arc lengths of the upper chord 51 and the lower chord 52 of the other truss units 50 may be equal or not, and in this embodiment, it is preferable that the upper chords 51 and the lower chords 52 of all the truss units 50 are correspondingly equal, that is, the weights of all the truss units 50 are the same. That is, the arc lengths of the upper chords 51 taken by two adjacent connecting members 2 of two adjacent truss units 50 and the arc lengths of the upper chords 51 taken between two connecting members 2 in the same truss unit 50 may be equal or different, but the lengths of three arc lengths of the upper chords 51 taken by two connecting members 2 in the same truss unit 50 are equal.

It is further preferred that all the connecting members 2 are evenly distributed along the circumference where the upper chord 51 is located and along the circumference where the crossing positions of the two horizontal coupling beams 112 are located. That is, the three arc lengths formed by the two connecting members 2 of the two adjacent truss units 50 are equal and equal to the arc length between the two adjacent connecting members 2 of the two adjacent truss units 50. Further improve the stress uniformity of the structure and improve the stability of the structure.

Specifically, as shown in fig. 1, the connecting member 2 is a rigid supporting member, such as a circular steel pipe, the end portion of the rigid supporting member is provided with an end plate 20 having an arc-shaped end portion, the end portion of the rigid supporting member is provided with slots extending along the axial direction, one end of the end plate 20 is an arc-shaped end portion, the other end of the end plate is a square end portion, the square end portion is inserted into the slots and welded and fixed, the arc-shaped end portion extends out of the slots, and the arc-shaped end portion is provided with a high-strength bolt mounting hole. The inner peripheral wall of the upper chord 51 of each truss unit 50, specifically, the intersection position of the inner web of the upper chord 51 and the horizontal coupling beam 112 is provided with a connecting plate 21, for example, the connecting plate 21 is a square connecting steel plate, and the connecting plate 21 is also provided with a high-strength bolt mounting hole. The end plate 20 and the corresponding connecting plate 21 are fixedly connected in the corresponding high-strength bolt mounting holes through high-strength bolts. The truss unit can be effectively prevented from rolling outwards during installation through the rigid support of the supporting piece. As an alternative embodiment, the connecting element 2 may be a pulling cable, and a pulling force is applied to the upper chord 51, and due to the inclined arrangement of the connecting element 2, the pulling force has a component radially inward in the radial direction, and the outward inclination of the truss unit during installation can be prevented by the pulling force.

Alternatively, the positioning structure 3 is welded to the support frame 111, and is adapted to be welded to the inner and/or outer circumferential walls of the lower chord 52 of the ring truss 5 to limit the horizontal displacement of the truss unit 50. The number of sets of the positioning structures 3 corresponds to the number of truss units 50. Specifically, as shown in fig. 3, the supporting frame 111 is a quadrilateral, a set of positioning structures 3 is respectively arranged at four corners, each set of positioning structures 3 includes three positioning clamping plates, and the cross section of each positioning clamping plate is of a T-shaped structure as shown in fig. 3. Two of the three positioning clamping plates are positioned on the inner circumferential wall formed by enclosing the inner web plates of the lower chord 52, and the other positioning clamping plate is positioned on the outer circumferential wall formed by enclosing the outer web plates of the lower chord 52, so that the positioning structure forms a three-point positioning structure for the truss units 50 corresponding to each other, each truss unit 50 is ensured to be fixed by the positioning clamping plates when being hoisted to the supporting platform 11, the displacement in the horizontal direction is limited, and the smooth completion of the installation is ensured.

Optionally, a chain block pulling point is arranged on the lower chord 52 of the ring truss 5 along the circumferential direction, the chain block is installed on the tower crane, and during hoisting, the levelness of the upper chord 51 of the ring truss 5 is adjusted by adjusting the length of the chain block. Specifically, the lower chord 52 of any truss unit 50 is correspondingly connected with two inverted chain pulling points, and the connection point of any inverted chain pulling point and the lower chord 52 of the truss unit 50 corresponding to the inverted chain pulling point is a trisection point. Alternatively, each of the chain blocks weighs 10 tons, and the chain block is adjusted in length during installation so that the upper flange surface of the upper chord 51 of the truss unit 50 is horizontal. The detailed structure and operation principle of the chain block are not described and limited in detail herein, and are prior art.

Optionally, in order to facilitate adjusting the elevation of the ring truss 5, the fixing device 1 further comprises an adjusting support structure distributed at four corners of the support frame 111 and adapted to be supported at the bottom end of the lower chord 52 of the ring truss 5 to adjust the elevation of the ring truss 5. Specifically, adjust bearing structure including adjusting steel sheet subassembly 41 and jack 4, as shown in fig. 3, be equipped with two jacks 4 between every group location structure 3, adjust steel sheet subassembly 41 including as shown in fig. 1 base with set up the support shaped steel on the base, through jack 4 with the truss unit 50 jacking that corresponds or descend and through the quantity that increases and decreases the support shaped steel reach the purpose of adjusting the elevation.

As shown in fig. 4, the supporting platform 11 and the supporting columns 12 constitute a lattice type supporting frame, and the supporting columns 12 include four, which are respectively disposed at the bottom ends of the four corner positions of the supporting frame 111. The diagonal rods 13 are connected to two adjacent or diagonal support columns 12 in an inclined manner. Preferably, as shown in fig. 4, two diagonal rods 13 are connected between two adjacent support columns 12, and the two diagonal rods 13 are arranged in an up-and-down symmetrical manner.

As shown in fig. 2, the ring truss of the present embodiment includes an upper chord 51, a lower chord 52, and web members 53, the upper chord 51 is formed by an upper flange plate, a lower flange plate, and an intermediate inner web and outer web, and the lower chord 52 is also formed by an upper flange plate, a lower flange plate, and an intermediate inner web and outer web. The web members 53 include vertical web members and diagonal web members, and are connected between the upper chord 51 and the lower chord 52. Wherein the diameter of the upper chord 51 is larger than the diameter of the lower chord 52, so that the ring truss 5 is formed like a bowl-shaped structure or an inverted trapezoidal structure.

In the sectional installation method of the unequal-diameter ring truss in the embodiment, as shown in fig. 5, the ring truss 5 is divided into five truss units 50 and transported to the site, each truss unit 50 weighs about 12.8 tons, and four-point hoisting is adopted. The support uprights 12 and the support platform 11 of the fixture 1 are first installed. As shown in fig. 5(1), a total station is used for measuring and releasing a truss coordinate on a supporting platform 11 in advance, positioning clamping plates are welded on two sides of the truss coordinate, a truss unit 50 is hoisted by a tower crane, the length of a chain block is adjusted during hoisting so as to adjust the upper flange surface of an upper chord 51 to be horizontal to correct the truss unit 50, after the single truss unit 50 is corrected, a connecting piece 2 is pulled towards the crossing position of two horizontal connecting beams 112 by the upper chord 51 and connected by a high-strength bolt, and then the positioning clamping plates and a lower chord 52 are fixed by spot welding. As shown in fig. 5(2), the second truss unit 50 is installed in the same manner in the clockwise direction, wherein when two adjacent truss units 50 are assembled, a connecting plate (not shown) for connecting the chord butt joint position is required immediately. Similarly, as shown in fig. 5(3), 5(4), and 5(5), the lifting and assembling of all the truss units 50 are completed. Finally, after all the truss units 50 are installed and corrected, symmetrical welding is started to form a complete bowl-shaped ring truss 5. It should be noted that, considering that the outward inclination projection of the ring truss 5 exceeds the supporting platform, as shown in fig. 4, an operating platform is arranged on the upper portion of the supporting frame 111 of the supporting platform 11, the operating platform is made of section steel, and the end face of the operating platform is protected by standardized hard protection, that is, the steel wire protective net 6 is adopted. Meanwhile, a plurality of safety vertical rods 7 are arranged at intervals along the circumferential direction at the top of the upper chord 51, and the safety vertical rods 7 are connected through two layers of safety ropes 8.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An unequal diameter ring truss high altitude segmentation installation fixing device, the ring truss (5) is formed by at least two truss units (50), characterized in that, the fixing device (1) comprises:

the supporting platform (11) comprises a supporting frame (111) with a hollow area in the middle and two horizontal coupling beams (112) which are arranged in the hollow area in a crossed mode, and the lower chord of the ring truss (5) is suitable for being supported on the supporting frame (111);

the connecting pieces (2) are radial, any truss unit corresponds to at least one connecting piece (2), one end of each connecting piece (2) is connected with two horizontal connecting beams (112), and the other end of each connecting piece is connected with the upper chord of the ring truss (5) so as to apply supporting force to the upper chord of the ring truss (5) or apply tension force with inward component force in the radial direction.

2. The unequal-diameter ring truss high-altitude subsection installation and fixing device according to claim 1, wherein two connecting pieces (2) are correspondingly connected to the upper chord of any truss unit, and the two connecting pieces (2) are symmetrically distributed about the midpoint of the upper chord of the corresponding truss unit.

3. The unequal-diameter ring truss high-altitude subsection installation and fixing device as claimed in claim 2, wherein the connection point of any one connecting piece (2) and the upper chord of the truss unit corresponding to the connecting piece is a trisection point.

4. The unequal-diameter ring truss high-altitude subsection installation and fixing device according to claim 2 or 3, wherein corresponding ends of all the connecting pieces (2) are uniformly distributed along the circumference where the upper chord is located and the circumference where the intersection position of the two horizontal connecting beams (112) is located respectively; or

The outer contour shape enclosed by all the connecting pieces (2) is a circular truncated cone.

5. The unequal-diameter ring truss high-altitude subsection installation fixing device according to any one of claims 1 to 3, wherein the connecting piece (2) is a rigid support, and the end of the rigid support is provided with an end plate (20) with an arc-shaped end;

and connecting plates (21) are arranged at the crossing positions of the inner peripheral wall of the upper chord and the horizontal connecting beam (112), and the end plates (20) are connected with the corresponding connecting plates (21) through high-strength bolts.

6. The unequal-diameter ring truss high-altitude subsection installation fixing device according to any one of claims 1-3, wherein the fixing device (1) further comprises:

and the positioning structure (3) is welded and fixed on the support frame (111) and is suitable for being welded and fixed with the inner peripheral wall and/or the outer peripheral wall of the lower chord of the ring truss (5) so as to limit the horizontal displacement of the ring truss (5).

7. The unequal-diameter ring truss high-altitude subsection installation and fixing device according to any one of claims 1-3, wherein a plurality of chain block pulling points are arranged on the lower chord of the ring truss (5) along the circumferential direction and used for being connected with chain blocks so as to adjust the levelness of the upper chord of the ring truss (5).

8. The unequal-diameter ring truss high-altitude subsection installation and fixing device is characterized in that the lower chord (52) of any truss unit (50) is correspondingly provided with two inverted chain pulling points, and each inverted chain pulling point is a trisection point of the lower chord (52) of the truss unit (50) corresponding to the inverted chain pulling point.

9. The unequal-diameter ring truss high-altitude subsection installation fixing device according to any one of claims 1-3, wherein the fixing device (1) further comprises:

and the adjusting and supporting structures are distributed at four corners of the supporting frame (111) and comprise adjusting steel plate assemblies (41) and jacks (4) which are suitable for being supported at the lower chord bottom ends of the ring truss (5) so as to adjust the elevation of the ring truss (5).

10. The unequal-diameter ring truss high-altitude subsection installation fixing device according to any one of claims 1-3, wherein the fixing device (1) further comprises:

-supporting uprights (12) arranged at the bottom angular positions of the supporting platform (11), forming a lattice support with the supporting frame (111);

and the inclined rod (13) is obliquely connected to the two adjacent or diagonal supporting upright columns (12).