A cantilever structure and hoisting method thereof

Abstract

The application relates to a cantilever structure installed on a public building and a hoisting method thereof, and belongs to the technical field of public building reconstruction construction. The structure comprises edge truss units, installation cables and shape-finding cables. The edge truss units are provided in plurality, the edge truss units are connected in a head-to-tail mode to form a closed loop, the edge truss units are connected with the installation cables respectively, the edge truss units are connected with the shape-finding cables respectively, the edge truss units are provided with fixing members respectively, the fixing members are used for realizing fixed connection between the edge truss units and the public building, the installation cables are used for enabling the closed loop formed by the edge truss units to have certain rigidity, and the shape-finding cables are used for shape finding of the closed loop formed by the edge truss units. The application has the effect of increasing a large-scale auxiliary structure on the original public building.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of public building reconstruction construction, and particularly relates to a cantilever structure installed on a public building and a hoisting method thereof. BACKGROUND

[0002] At present, many large public buildings such as stadiums often face the problem of needing to change or increase the function, so it is often necessary to reconstruct or add auxiliary structures to meet the new use function requirement, for example, adding radial structures on the top of the stadium to facilitate the subsequent installation of a canopy and LED lights, etc. In the prior art, temporary supports are usually set in the stadium, and the radial auxiliary structure made entirely of steel pipes welded on the stadium is gradually welded on the temporary supports.

[0003] However, the radial auxiliary structure made entirely of steel pipes is often heavy in weight, which will further increase the load required by the stadium after the radial auxiliary structure is installed. Therefore, the carrying capacity limit of the original stadium needs to be further considered during the construction process. In order to not exceed the carrying capacity limit of the public building to be reconstructed, the scale of the auxiliary structure added to the public building is usually small, which may cause the problem of the unobvious change of the function of the current public building after reconstruction and the unobvious effect of the new function. SUMMARY

[0004] In order to increase the scale of the auxiliary structure on the original public building, in a first aspect, the present application provides a cantilever structure installed on a public building.

[0005] The cantilever structure installed on the public building provided by the present application adopts the following technical scheme:

[0006] The cantilever structure installed on the public building provided by the present application adopts the following technical scheme:

[0007] By adopting the above technical scheme, the edge truss units are respectively installed on the installation cables and the shape-finding cables, so that the edge truss units can have certain connection rigidity after being connected through the mode of tensioning or tensioning the installation cables, and the whole cantilever structure can be more reasonable in distribution between the closed loops through the mode of tensioning or tensioning the shape-finding cables, so that the whole cantilever structure formed by the plurality of edge truss units is more stable when bearing load, and the self weight of the whole cantilever structure is lighter than that of the cantilever structure formed by all steel pipes, thereby achieving the effect of increasing a larger scale cantilever structure within the bearing limit of the original public building, and the fixing member enables the edge truss units to be connected to the original public building, thereby increasing the connection reliability of the edge truss structure.

[0008] Optionally, the edge truss unit comprises a connecting frame and a supporting frame, the supporting frame is connected to one side of the connecting frame, the fixing member is fixedly connected to the other side of the connecting frame, the supporting frame is connected to the installation cable, and the supporting frame is also connected to the shape-finding cable.

[0009] By adopting the above technical scheme, the connecting frame is used to realize the connection between the adjacent edge truss units, and the fixing member is connected to the original public building, and the installation cable and the shape-finding cable are both installed on the supporting frame, so that the supporting frame can be pressed towards the center of the closed loop or away from the center of the closed loop through the mode of tensioning or tensioning the installation cable and the shape-finding cable.

[0010] Optionally, the connecting frame comprises two parallel connecting steel pipes and two reinforcing steel pipes, the two connecting steel pipes are arranged in an up-down manner, and the two reinforcing steel pipes are arranged between the two connecting steel pipes and are fixedly connected to the two connecting steel pipes at two ends, respectively, one end of the connecting steel pipe is provided with a plug-in part, the other end of the connecting steel pipe is provided with a plug-in slot, and the connecting steel pipes on the adjacent two connecting frames are connected through plug-in cooperation.

[0011] By adopting the above technical scheme, the connecting frame comprises two parallel connecting steel pipes and two reinforcing steel pipes, the two reinforcing steel pipes are arranged between the two connecting steel pipes and are fixedly connected to the two connecting steel pipes at two ends, respectively, the reinforcing steel pipes are used to increase the connection strength between the two connecting steel pipes, thereby increasing the connection strength of the whole connecting frame, and the two ends of the connecting steel pipe are respectively provided with a plug-in part and a plug-in slot, so that the connecting steel pipes on the adjacent two connecting frames can be preliminarily fixed through plug-in cooperation, thereby improving the assembly efficiency between the adjacent two connecting frames.

[0012] Optionally, the supporting frame comprises one supporting steel pipe and two fixing steel pipes, the two fixing steel pipes are connected to the two ends of the supporting steel pipe, respectively, and the ends of the two fixing steel pipes away from the supporting steel pipe are connected to the two connecting steel pipes arranged in an up-down manner, respectively.

[0013] By adopting the technical scheme, one end of the two fixed steel pipes is connected with the support steel pipe, and the other end of the two fixed steel pipes is connected with the connecting steel pipe, thereby realizing the fixation of the support steel pipe on the connecting steel pipe.

[0014] Optionally, the installation cable is located at the lower end of the support steel pipe and is connected with the support steel pipe; and the shape-finding cable is located at the upper end of the support steel pipe and is also connected with the support steel pipe.

[0015] By adopting the technical scheme, the installation cable is located at the lower end of the support steel pipe, and the shape-finding cable is located at the upper end of the support steel pipe, which enables the position of one end of the support steel pipe on the connecting frame to be adjusted by means of tightening or loosening the installation cable during installation, so that the connecting frames can be pressed towards the center of the closed ring by means of tensioning the installation cable after being connected with each other, thereby enabling the closed ring to have a certain rigidity, and the position of the other end of the support steel pipe on the connecting frame can be adjusted by means of tensioning the shape-finding cable, thereby enabling the spacing between the support steel pipes connected with the shape-finding cable to be more reasonable, and thereby enabling the support steel pipes to be more stable when bearing loads.

[0016] Optionally, the position corresponding to the fixing member on the public building is provided with a connecting member, and the connecting member is fixedly connected with the fixing member.

[0017] By adopting the technical scheme, the connecting frames can be fixed on the large public building through the fixed connection between the connecting member and the fixing member, and since the connecting frames are connected with the large public building through the connecting member and the fixing member instead of being directly fixed on the large public building, the stress concentration of the connecting frames when being directly connected is reduced.

[0018] Optionally, the fixing member comprises a connecting portion and a limiting portion which are fixedly connected, the connecting portion is connected on the edge truss unit, the connecting member is provided with a groove which is adapted to the limiting portion, and the limiting portion and the groove are connected through plug-in cooperation, and the connecting portion and the connecting member are fixedly connected after the plug-in cooperation.

[0019] By adopting the technical scheme, the limiting portion on the fixing member and the groove on the connecting member are connected through plug-in cooperation before the connecting member and the fixing member are fixedly connected, thereby realizing the preliminary positioning of the connecting frame on the large public building, which enables the connecting frames to be adjusted through tensioning the installation cable and the shape-finding cable, and the connecting frames are fixed on the large public building after being adjusted.

[0020] The second invention, the application also provides a hoisting method of the cantilever structure installed on the public building, comprising the following steps:

[0021] S100: The edge truss unit is pre-fabricated, and each edge truss unit is connected, and a fixing member is installed on each edge truss unit;

[0022] S200: The installation cable and the shape-finding cable are connected to each edge truss unit, respectively;

[0023] S300: The installation cable is tensioned;

[0024] S400: After the installation cable is tensioned, each edge truss unit is hoisted to the target height by a crane;

[0025] S500: The shape-finding cable is gradually tensioned after the installation cable is loosened;

[0026] S600: After each fixing member is fixedly connected to the public building, the crane is slowly loosened.

[0027] In summary, the present application has at least the following beneficial technical effects:

[0028] 1. By installing each edge truss unit on the installation cable and the shape-finding cable, and by tensioning the installation cable and the shape-finding cable, the entire cantilever structure can have sufficient rigidity, the entire cantilever structure composed of multiple edge truss units has a lighter self-weight than the cantilever structure composed of all steel pipes, and a larger cantilever structure can be built within the load limit of the original public building;

[0029] 2. By providing a plug-in groove at one end of the connecting pipe and a plug-in part at the other end of the connecting pipe, the connecting pipes on the adjacent two connecting frames can be connected by plug-in cooperation, thereby improving the connection efficiency of the adjacent two connecting frames; BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a three-dimensional schematic view of a cantilever structure applied to a public building according to the present application;

[0031] Figure 2 is a three-dimensional structural schematic view of a cantilever structure applied to a public building according to the present application;

[0032] Figure 3 is Figure 2 a three-dimensional structural schematic view of an edge truss unit in

[0033] Figure 4 is Figure 1 an enlarged schematic view of A in

[0034] Explanation of reference signs: 1, edge truss unit; 2, installation cable; 3, shape-finding cable; 4, fixing member; 5, connecting truss; 6, supporting truss; 7, connecting steel pipe; 8, reinforcing steel pipe; 9, insertion part; 10, insertion groove; 11, supporting steel pipe; 12, fixing steel pipe; 13, connecting member; 14, connecting part; 15, limiting part; 16, groove; DETAILED DESCRIPTION

[0035] The following will be described in detail in combination with the accompanying drawings. Figures 1-4 The large gymnasium for public buildings in the present application will be further described in detail.

[0036] Example 1

[0037] The example 1 of the present application discloses a cantilever structure installed on a public building, referring to Figures 1-2 The cantilever structure is installed on the top of the large gymnasium, which comprises edge truss units 1, installation cables 2 and shape-finding cables 3. The edge truss units 1 are provided in plurality and are connected in series to form a complete closed loop. Each edge truss unit 1 is installed on the installation cable 2 and the shape-finding cable 3.

[0038] Further, vertical force cables (not shown in the drawing) can be provided at the connection between each edge truss unit 1 and the installation cable 2. The end of the vertical force cable away from the edge truss unit 1 is connected to the vertical bearing structure of the large gymnasium, so that the structure of the large gymnasium is more stable when bearing the load of the newly added edge truss units 1.

[0039] Referring to Figure 2 and Figure 3 Each edge truss unit 1 comprises a connecting truss 5 and a supporting truss 6. The connecting truss 5 comprises two parallel connecting steel pipes 7 and two reinforcing steel pipes 8. In order to adapt to the circular shape of the top of the large gymnasium, the connecting steel pipes 7 are bent at a certain angle from the length center. The axes of the two connecting steel pipes 7 are parallel to the ground and are distributed vertically. The two reinforcing steel pipes 8 are located between the two connecting steel pipes 7. One of the two reinforcing steel pipes 8 is located at the length midpoint of the connecting steel pipe 7, and the other reinforcing steel pipe is located at the end of the connecting steel pipe 7. The two ends of each reinforcing steel pipe 8 are fixedly connected to the two connecting steel pipes 7, and the axes of the two reinforcing steel pipes 8 are perpendicular to the axes of the connecting steel pipes 7 in the vertical direction.

[0040] Further, a steel pipe 7 is further arranged between the two reinforcing steel pipes 8 to further enhance the stability of the connection between the steel pipe 7 and the reinforcing steel pipe 8, the two ends of the steel pipe 7 are closed, one end of the steel pipe 7 is provided with a plug-in part 9, and the other end of the steel pipe 7 is provided with a plug-in groove 10 matched with the plug-in part 9, so that the two adjacent steel pipes 7 on the adjacent two connecting frames 5 can be connected through the plug-in cooperation between the plug-in part 9 and the plug-in groove 10, thereby realizing the pre-assembly of the connecting frames 5 before the large gymnasium is connected, and the plug-in cooperation between the plug-in part 9 and the plug-in groove 10 can improve the connection efficiency between the two adjacent connecting frames 5.

[0041] The support frame 6 includes two fixed steel pipes 12 and a support steel pipe 11, the two ends of the support steel pipe 11 are connected with the two fixed steel pipes 12, the axis of one of the fixed steel pipes 12 is perpendicular to the axis of the steel pipe 7 in the horizontal direction, the axis of the support steel pipe 11 has an included angle in the vertical direction, the upper end of the support steel pipe 11 is inclined away from the upper steel pipe 7, the lower end of the support steel pipe 11 is inclined towards the lower steel pipe 7, the axis of the fixed steel pipe 12 is perpendicular to the axis of the steel pipe 7 in the horizontal direction, one of the fixed steel pipes 12 is fixedly connected with the upper end of the support steel pipe 11, and the other fixed steel pipe 12 is fixedly connected with the lower end of the support steel pipe 11.

[0042] The installation cable 2 is connected to the lower end of the support steel pipe 11, the vertical force cable can also be installed at the lower end of the support steel pipe 11, and the shape-finding cable 3 is connected to the upper end of the support steel pipe 11, the installation cable 2 is tensioned to pull the lower end of the support steel pipe 11, thereby enabling the steel pipes 7 to have a certain rigidity, and the shape-finding cable 3 is tensioned or pulled to pull the upper end of the support steel pipe 11, thereby enabling the support steel pipe 11 to be in the most suitable position to bear the load, thereby improving the load-bearing stability of the support steel pipe 11.

[0043] Referring to Figure 3 and Figure 4The fixed part 4 is provided on the side of the reinforcing steel pipe 8 away from the supporting steel pipe 11 at the center of the length of the connecting steel pipe 7, and the fixed part 4 comprises a connecting part 14 and a limiting part 15, one side of the connecting part 14 is fixedly connected with the reinforcing steel pipe 8, the other side of the connecting part 14 is fixedly connected with the limiting part 15, and the limiting part 15 protrudes from the side of the connecting part 14; a connecting part 13 is provided on the large gymnasium at a position corresponding to the fixed part 4, one side of the connecting part 13 is fixedly connected with the large gymnasium, and the other side of the connecting part 13 is provided with a groove 16, the profile of the groove 16 is matched with the outer profile of the limiting part 15, the limiting part 15 is inserted into the groove 16, the connecting part 14 is attached to the connecting part 13 after the limiting part 15 is inserted into the groove 16, and the reinforcing steel pipe 8 can be preliminarily fixed on the connecting part 13 through the fixed part 4.

[0044] The implementation principle of the embodiment of the application is as follows: first, the edge truss units 1 provided with the fixed parts 4 are pre-installed on the ground, and the edge truss units 1 are assembled after being pre-fabricated, to form a circular cantilever structure; in the process of assembly, the installation cables 2 and the shape-finding cables 3 are respectively installed at the lower ends and the upper ends of the supporting rods of the edge truss units 1; after pre-installation, the installation cables 2 are tensioned, so that the edge truss units 1 are pressed towards the center of the closed ring and have initial rigidity, and the internal structure forms a semi-rigid whole; subsequently, the cantilever structure is lifted to the target height by multiple cranes, and the position of the cantilever structure is aligned, so that the fixed parts 4 and the connecting parts 13 are one-to-one corresponding; the installation cables 2 are loosened, so that the limiting parts 15 of the fixed parts 4 are inserted into the grooves 16 of the connecting parts 13; subsequently, the interval between the supporting frames is adjusted to a suitable position by tightening and loosening the shape-finding cables 3, so that the supporting frames can bear the load more stably; at this time, the one side of the connecting part 14 provided with the limiting part 15 is abutted against the one side of the connecting part 13 provided with the groove 16; then, the abutting position of the connecting part 14 and the connecting part 13 is welded; after the welding between all the connecting parts 13 and all the connecting parts 14 is completed, the cranes are slowly loosened, and the installation of the cantilever structure is completed.

[0045] Embodiment 2

[0046] The embodiment 2 of the application further provides a hoisting method of the cantilever structure installed on a public building, which is used for installing the cantilever structure on the top of the large gymnasium, and comprises the following steps:

[0047] S100: the edge truss units 1 are pre-fabricated, and the fixed parts 4 are installed on the edge truss units 1; the connecting parts 13 are installed on the large gymnasium at positions corresponding to the edge truss units 1;

[0048] S200: Connect the installation cable 2 and the form-finding cable 3 to each side truss unit 1 respectively;

[0049] S300: Tighten the installation cable 2 so that the truss units 1 on each side are squeezed towards the center of the assembled closed ring, thereby reducing the outer diameter of the entire closed ring and giving it preliminary rigidity;

[0050] S400: Use multiple cranes to lift the tensioned and spliced ​​truss units 1 on each side to the target height, and align the position of the fixing part 4 so that the position of the limiting part 15 on the fixing part 4 corresponds one-to-one with the position of the groove 16 on the connecting part 13.

[0051] S500: Slowly loosen the installation cable 2 to increase the outer diameter of the closed ring, so that each limiting part 15 can be inserted and engaged with each groove 16 respectively;

[0052] S600: The form-finding cable 3 is tensioned symmetrically at each stage, so that the spacing distribution of each side truss unit 1 on the closed ring is consistent with the design expectation, and the side truss unit 1 can bear the load more stably.

[0053] S700: After the limiting part 15 and the groove 16 are inserted and engaged, each fixing part 4 is fixedly connected to each connecting part 13, and then the connection between the crane and the side truss unit 1 is slowly released.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cantilever structure to be installed on a public building, characterized by: The utility model provides a kind of public building edge truss unit, including edge truss unit (1), installation cable (2) and shape cable (3), the edge truss unit (1) is provided with multiple, each edge truss unit (1) is connected to form closed loop, each edge truss unit (1) is connected with installation cable (2) respectively, each edge truss unit (1) is connected with shape cable (3), each edge truss unit (1) is all provided with fixed part (4) on, the fixed part (4) is used to realize the fixed connection between edge truss unit (1) and public building, installation cable (2) is used to make the closed loop of each edge truss unit (1) have certain rigidity, shape cable (3) is used to shape the closed loop of each edge truss unit (1);The edge truss unit (1) includes connecting frame (5) and support frame (6), the support frame (6) is connected in one side of connecting frame (5), and extends to the center of closed loop surrounded by each edge truss unit (1), the fixed part (4) is installed in the other side of connecting frame (5), the support frame (6) is connected with installation cable (2), the support frame (6) is also connected with shape cable (3);The connecting frame (5) includes two parallel connecting steel pipes (7) and two reinforcing steel pipes (8), two connecting steel pipes (7) are distributed in upper and lower, two reinforcing steel pipes (8) are fixed between two connecting steel pipes (7) respectively, one end of connecting steel pipe (7) is provided with insertion part (9), the other end of connecting steel pipe (7) is provided with insertion slot (10), the connecting steel pipe (7) on adjacent two connecting frames (5) is connected by insertion cooperation;The support frame (6) includes a support steel pipe (11) and two fixed steel pipes (12), two fixed steel pipes (12) are connected in the both ends of support steel pipe (11) respectively, and the end away from support steel pipe (11) of two fixed steel pipes (12) is connected on two connecting steel pipes (7) distributed in upper and lower respectively;Installation cable (2) is located in the lower end of support steel pipe (11) and is connected with support steel pipe (11);Shape cable (3) is located in the upper end of support steel pipe (11) and is connected with support steel pipe (11), and the axis of support steel pipe (11) has an angle in vertical direction, the upper end of support steel pipe (11) is inclined to the direction away from the connecting steel pipe (7) located above, and the lower end of support steel pipe (11) is inclined to the direction close to the connecting steel pipe (7) located below.

2. A cantilever structure to be installed on a public building according to claim 1, characterized in that: The position corresponding to the fixed part (4) on the public building is provided with a connecting part (13), and the connecting part (13) is fixedly connected with the fixed part (4).

3. A cantilever structure to be installed on a public building according to claim 2, characterized in that: The fixed part (4) includes a connecting part (14) and a limiting part (15) fixedly connected, the connecting part (14) is connected on the connecting frame (5), the connecting part (13) is provided with a groove (16) matched with the limiting part (15), and the connecting part (14) is fixedly connected with the connecting part (13) after the limiting part (15) is inserted and cooperated with the groove (16).

4. A method of hoisting a cantilevered structure to be installed on a public building, for hoisting a cantilevered structure according to any one of claims 1 to 3, characterized in that The utility model provides a kind of public building edge truss unit, including edge truss unit (1), installation cable (2) and shape cable (3), the edge truss unit (1) is provided with multiple, each edge truss unit (1) is connected to form closed loop, each edge truss unit (1) is connected with installation cable (2) respectively, each edge truss unit (1) is connected with shape cable (3), each edge truss unit (1) is all provided with fixed part (4) on, the fixed part (4) is used to realize the fixed connection between edge truss unit (1) and public building, installation cable (2) is used to make the closed loop of each edge truss unit (1) have certain rigidity, shape cable (3) is used to shape the closed loop of each edge truss unit (1); S100: The edge truss units (1) are manufactured in advance, and the edge truss units (1) are connected, and the fixing members (4) are installed on the edge truss units (1); S200: The installation cables (2) and the shape-finding cables (3) are respectively connected to the edge truss units (1); S300: The installation cables (2) are pulled tight; S400: The edge truss units (1) are hoisted to the target height by a crane after the installation cables (2) are pulled tight; S500: The shape-finding cables (3) are gradually pulled tight after the installation cables (2) are loosened; S600: The fixing members (4) are fixed to the public building, and the crane is slowly loosened.

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