Steel tower cross beam section cantilever assembly structure

By designing the section cantilever assembly structure of steel tower beams in bridge construction, including connection positioning devices and transverse adjustment devices, the problems of long construction period, high safety risks and high installation difficulties in traditional installation processes are solved, and precise assembly and fixed connection of large-segment steel beams are achieved, reducing the impact of high altitude environment and assembly costs.

CN222594642UActive Publication Date: 2025-03-11CCCC SECOND HARBOR ENGINEERING CO LTD
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Patent Information

Application Number
CN202421050319.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-15
Publication Date
2025-03-11
Estimated Expiration
2034-05-15

AI Technical Summary

Technical Problem

In bridge construction, the growth of the scale of steel tower beams has led to problems such as large investment in temporary measures, long construction period, and high safety risks in traditional bracket installation processes. The suspension height is high and the segments are affected by the environment at high altitude, making it difficult to stabilize and install and position.

Method used

A steel tower beam segment cantilever assembly structure is designed, including a connecting positioning device and a transverse adjustment device. The connecting positioning device includes a tensioning mechanism, a positioning mechanism and a connecting mechanism for adjusting and fixing the joint spacing and connection position of the cross beam segment; the transverse adjustment device adjusts the relative position of the cross beam segment through the pushing mechanism and the pushing mechanism.

Benefits of technology

Through the cooperation of multiple institutions, precise assembly and fixed connection of large-segment steel cross beams is achieved, which reduces the impact of high-altitude environment, reduces the difficulty of stability and installation positioning, has small safety risks, and shortens the assembly period and reduces costs.

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Abstract

The utility model discloses a cantilever assembly structure for cross beam sections of a steel tower. The cantilever assembly structure comprises a connecting and positioning device and a transverse adjusting device which are mounted on two adjacent and continuously connected cross beam sections, the connecting and positioning device comprises a tensioning mechanism used for adjusting the seam spacing between two adjacent and continuously connected cross beam sections, a positioning mechanism used for positioning the connecting position of the two adjacent and continuously connected cross beam sections, and a connecting mechanism used for fixedly connecting the two adjacent and continuously connected cross beam sections. The transverse adjusting device comprises an abutting and pushing mechanism and a pushed mechanism, wherein the abutting and pushing mechanism and the pushed mechanism are fixed to the two adjacent continuously-connected cross beam sections respectively, matched with each other in an abutting and pushing mode and used for adjusting the relative positions of the two adjacent continuously-connected cross beam sections in the width direction of the cross beam sections. The large-section steel cross beam is assembled through cooperation of a plurality of mechanisms, the influence of the high-altitude environment is small, the stability difficulty is low, installation and positioning are easy, the safety risk is small, the assembling cost is reduced, and the assembling construction period is shortened.
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Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a steel tower crossbeam segment cantilever assembly structure. Background Art

[0002] In bridge engineering, the cantilever beam assembly technology of large steel structures is mature and widely used in steel beam installation. Generally, bridge deck cranes and brackets are used to install cantilever steel beams, and the posture of steel beams is relatively easy to adjust. In recent years, the construction of large-span bridges at home and abroad has developed rapidly. Steel structure bridge towers have been widely used due to their light weight, high strength, good seismic performance, short construction period and convenient repair and reinforcement. Most of the steel structure bridge towers currently built adopt a single tower structure, and there are fewer bridge towers with H-shaped steel tower structures with cross beams. The scale of steel cross beams is small, and most of them adopt bracket installation technology.

[0003] As the scale of steel towers grows, the scale of steel beams also continues to increase. The current installation of steel beams is affected by factors such as the heavy weight of the segments, the high installation height, and the unfavorable high-altitude environment. The traditional bracket installation process has disadvantages such as large investment in temporary measures, long construction period, and high safety risks. At the same time, the steel beams are hoisted in blocks by tower cranes, the suspension height is high, the segments are affected by the environment at high altitudes, stability is difficult, and installation and positioning are difficult. Utility Model Content

[0004] The purpose of the utility model is to solve the deficiencies of the above-mentioned background technology and to provide an assembly structure that can meet the assembly requirements of high-altitude cantilever super-heavy steel beam segments.

[0005] To achieve this purpose, the steel tower beam segment cantilever assembly structure designed by the utility model includes a connection positioning device and a lateral adjustment device installed on two adjacent continuously connected beam segments; the connection positioning device includes a tensioning mechanism for adjusting the joint spacing between two adjacent continuously connected beam segments, a positioning mechanism for positioning the connection position of two adjacent continuously connected beam segments and a connecting mechanism for fixing the two adjacent continuously connected beam segments; the lateral adjustment device includes a pushing mechanism and a pushing mechanism, which are respectively fixed on two adjacent continuously connected beam segments, push and cooperate with each other, and are used to adjust the relative positions of the two adjacent continuously connected beam segments in the width direction of the beam segments.

[0006] Furthermore, the tensioning mechanism includes a first tensioning bracket and a second tensioning bracket respectively fixed on two adjacent continuously connected beam segments, and a tensioning screw arranged along the length direction of the bridge is connected between the first tensioning bracket and the second tensioning bracket.

[0007] Furthermore, the positioning mechanism includes a positioning plate and a positioning frame respectively fixed on two adjacent continuously connected beam segments, the positioning frame is located above the positioning plate, and a first positioning bolt is connected between the positioning plate and the positioning frame.

[0008] Furthermore, the positioning mechanism includes a first matching positioning bracket and a second matching positioning bracket respectively fixed on two adjacent continuously connected beam segments, the first matching positioning bracket and the second matching positioning bracket are arranged opposite to each other, and a second positioning bolt is connected between the first matching positioning bracket and the second matching positioning bracket.

[0009] Furthermore, the connecting mechanism includes a first connecting bracket and a second connecting bracket which are respectively fixed on two adjacent continuously connected beam segments and arranged opposite to each other, and a connecting bolt is fixedly connected between the first connecting bracket and the second connecting bracket.

[0010] Furthermore, the push mechanism includes a push device fixed on the beam segment, and the push device includes a power output end that can reciprocate along the width direction of the bridge.

[0011] Furthermore, the thrust receiving mechanism includes a thrust receiving bracket fixed on the cross beam segment and used for bearing the thrust force of the power output end of the thrust resisting device.

[0012] Furthermore, a plurality of the positioning mechanisms are arranged at the top connection and the bottom connection of the two adjacent continuously connected beam segments.

[0013] Furthermore, the tensioning mechanism, the positioning mechanism and the connecting mechanism located on the same beam segment are fixedly connected to form an integrated structure.

[0014] Furthermore, a plurality of the lateral adjustment devices are arranged at the top connection and the bottom connection of the two adjacent continuously connected beam segments.

[0015] The beneficial effects of the utility model are as follows: on the basis of tower crane hoisting, the utility model adjusts the position of two adjacent continuously connected beam segments in the width direction of the beam segments by a lateral adjustment device, adjusts the joint spacing of the two adjacent continuously connected beam segments by a tensioning mechanism, and ensures the accurate assembly and fixed connection of the two adjacent continuously connected beam segments by a positioning mechanism and a connecting mechanism. The assembly of large-segment steel beams is achieved through the joint cooperation of multiple mechanisms, which is less affected by the high-altitude environment, has low stability difficulty, is easy to install and position, has low safety risks, reduces assembly costs, and shortens assembly period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the cross beam segment division in the utility model;

[0017] Figure 2 This is a schematic diagram of the cantilever assembly of the cross beam segment in the utility model;

[0018] Figure 3 It is a front view of the top connection structure of two adjacent continuous beam segments in the utility model;

[0019] Figure 4 It is a top view of the top connection structure of two adjacent continuous beam segments in the utility model;

[0020] Figure 5 It is a right view of the top of the left cross beam segment of two adjacent continuous cross beam segments in the utility model;

[0021] Figure 6 It is a left view of the top of the right cross beam segment of two adjacent continuous cross beam segments in the utility model;

[0022] Figure 7 It is a top view of the transverse adjustment device of two adjacent continuous beam segments in the utility model;

[0023] Figure 8 It is a front view of the positioning mechanism at the bottom of two adjacent and continuous beam segments in the utility model;

[0024] Fig. 9 It is a right view of the bottom of the left cross beam segment of two adjacent continuous cross beam segments in the utility model;

[0025] Fig.10 The cantilever assembly of two adjacent continuous beam segments in the utility model Figure 1 ;

[0026] Fig.11 The cantilever assembly of two adjacent continuous beam segments in the utility model Figure 2 ;

[0027] Fig.12 The cantilever assembly of two adjacent continuous beam segments in the utility model Figure 3 ;

[0028] Fig.13 It is a cantilever assembly construction flow chart of two adjacent continuous beam segments in the utility model;

[0029] Among them, 1 is the first tensioning bracket, 2 is the second tensioning bracket, 3 is the tensioning screw, 4 is the positioning plate, 5 is the positioning frame, 6 is the first positioning bolt, 7 is the first matching positioning bracket, 8 is the second matching positioning bracket, 9 is the second positioning bolt, 10 is the beam segment, 11 is the first connecting bracket, 12 is the second connecting bracket, 13 is the connecting bolt, 14 is the thrust device, 15 is the thrust bracket, 16 is the bridge tower, 17 is the positioning bolt hole, 18 is the connecting bolt hole, 19 is the vertical plate, 20 is the reaction frame, 21 is the fulcrum, 22 is the segment top plate, 23 is the segment web plate, and 24 is the segment bottom plate. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] like Figure 1 The steel tower beam segment cantilever assembly structure shown in FIG. 9 comprises a connection positioning device and a lateral adjustment device installed on two adjacent continuously connected beam segments 10.

[0032] The connection and positioning device includes a tensioning mechanism for adjusting the joint spacing between two adjacent continuously connected beam segments 10, a positioning mechanism for positioning the connection position of two adjacent continuously connected beam segments 10, and a connection mechanism for fixing and connecting two adjacent continuously connected beam segments 10.

[0033] like Figure 3 As shown in Figure 6, the tensioning mechanism includes a first tensioning bracket 1 and a second tensioning bracket 2 respectively fixed on the tops of two adjacent continuously connected beam segments 10. When the first tensioning bracket 1 and the second tensioning bracket 2 are assembled, the first tensioning bracket 1 and the second tensioning bracket 2 are connected by a tensioning screw 3 arranged along the length direction of the bridge, and both ends of the tensioning screw 3 pass through the first tensioning bracket 1 and the second tensioning bracket 2 and are threadedly connected with a nut.

[0034] Positioning mechanism includes Figure 3 —6, respectively fixed to the top of two adjacent continuously connected beam segments 10, and the positioning plate 4 and the positioning frame 5, and Figure 8 —9 shows a first matching positioning bracket 7 and a second matching positioning bracket 8 respectively fixed to the bottom of two adjacent continuously connected cross beam segments 10. The positioning bracket 5 is located above the positioning plate 4. When the positioning plate 4 and the positioning bracket 5 are assembled, the positioning plate 4 and the positioning bracket 5 are connected by the first positioning bolt 6. The first positioning bolt 6 on the positioning plate 4 passes through the positioning bolt hole 17 at the bottom of the positioning bracket 5 to connect the nut. The first matching positioning bracket 7 and the second matching positioning bracket 8 are arranged opposite to each other. When the first matching positioning bracket 7 and the second matching positioning bracket 8 are assembled, the second positioning bolt 9 of the first matching positioning bracket 7 passes through the positioning bolt hole 17 of the second matching positioning bracket 8 to connect the nut.

[0035] Connection mechanism includes Figure 3 —6 shows a first connecting bracket 11 and a second connecting bracket 12 which are respectively fixed to the tops of two adjacent continuously connected beam segments 10 and are arranged opposite to each other. When the first connecting bracket 11 and the second connecting bracket 12 are assembled, the connecting bolt 13 of the first connecting bracket 11 passes through the connecting bolt hole 18 of the second connecting bracket 12 to connect the nut.

[0036] like Figure 7 As shown, the lateral adjustment device includes a pushing mechanism and a pushed mechanism, which are respectively fixed to the tops of two adjacent continuously connected beam segments 10, push each other and cooperate with each other to adjust the relative positions of the two adjacent continuously connected beam segments 10 in the width direction of the beam segments 10.

[0037] The push mechanism includes a push device 14 fixed on the beam segment 10, the push device 14 includes a power output end that can reciprocate along the width direction of the bridge (the push device 14 can be a jack), and the push device 14 is fixed to the top of the beam segment 10 through a reaction frame 20 fixed to the top of the beam segment 10. The push mechanism includes a push support 15 fixed on the beam segment 10 for bearing the push force of the power output end of the push device 14, and a fulcrum 21 corresponding to the power output end of the push device 14 is provided on the push support 15.

[0038] In the utility model, a tensioning bracket is fixed on the segment top plate 22 of the cross beam segment 10, and a connecting bracket is fixed on the left and right sides of the tensioning bracket, and a fixing plate 4 or a positioning frame 5 is fixed on the tensioning bracket. The tensioning bracket, the connecting bracket and the fixing plate 4 or the fixing frame 5 form a multifunctional connector. The multifunctional connector is arranged on the segment top plate 22, and the number is determined according to the force safety, and it is preferably arranged in an area with large rigidity, such as near the segment web 23. When the cross beam segment 10 is spliced, the multifunctional connector bears part of the weight of the cross beam segment 10, and its main function is to stabilize the connection end surface. The joint spacing between two adjacent continuous cross beam segments 10 can be adjusted by screw tensioning. After adjusting the relative position of the two adjacent continuous cross beam segments 10, the multifunctional connector can install the first positioning bolt 6 of the positioning plate 4 to complete the matching and positioning of the segment top plate 22 of the cross beam segment 10. At the same time, the second positioning bolt 9 of the first matching positioning bracket 7 is installed to complete the matching and positioning of the segment bottom plate 24 of the cross beam segment 10. The vertical plate 19 of the multifunctional connector is provided with corresponding connecting bolt holes 18 and connecting bolts 13. After two adjacent continuous beam segments 10 are matched, the connecting bolts 13 are installed. At this time, the multifunctional connector can independently bear the weight of the spliced ​​beam segments 10.

[0039] The transverse adjustment device is arranged at the corner position of the joint of the segment top plate 22 and the segment bottom plate 24 , and can adjust the transverse offset between two adjacently connected beam segments 10 .

[0040] like Fig.10 As shown in FIG. 13 , the assembly construction process of the steel tower beam segment cantilever assembly structure designed based on the utility model is as follows:

[0041] Stabilization phase

[0042] (1) The tower crane hoists beam segment 10 to the vicinity of the assembly position, as close to the connection end as possible, and controls the deviation within 30 cm.

[0043] (2) Adjust the crossbeam segment 10 by hand winch so that the deviation in each direction is within 5 cm and the crossbeam segment 10 is in a high position.

[0044] (3) The cross beam segment 10 is lowered so that the multifunctional connector contacts and bears a certain load, thereby controlling the posture deviation of the cross beam segment 10.

[0045] (4) The cross beam segment 10 gradually stabilizes under the joint action of the tower crane and the multifunctional connector, and the deviation is controlled within 5 cm.

[0046] Adjustment phase

[0047] (1) Install the transverse adjustment device and the tensioning screw 3, and adjust the displacement of two adjacent continuous beam segments 10 in various positions and directions in sequence through the jack (the push device 14) and the tensioning screw 3.

[0048] (2) After the deviations of various parts of two adjacent continuous beam segments 10 are adjusted to within the allowable range, the adjustment of the beam segments 10 is completed.

[0049] Matching Phase

[0050] (1) During the adjustment of the cross beam segment 10, punches are driven into the positioning bolt holes 17 of the segment top plate 22 and the segment bottom plate 24 in a timely manner to restore the relative position between the cross beam segments 10 to the designed state, thereby further stabilizing the connection surface.

[0051] (2) Replace the punches one by one with positioning bolts to complete the matching positioning of the beam segment 10.

[0052] Locking Phase

[0053] (1) Install the connecting bolts 13 on the vertical plate 19 of the multifunctional connecting member.

[0054] (2) The tower crane slowly releases the hook to complete the force system conversion.

[0055] Connection Phase

[0056] (1) Install a plate at the weld position of two adjacent continuous beam segments 10 and weld them together.

[0057] (2) Remove the multifunctional connectors, lateral adjustment devices and other assembly structures to complete the cantilever assembly construction of the beam segment 10.

[0058] The utility model, based on the tower crane hoisting, uses a lateral adjustment device to adjust the position of two adjacent continuously connected beam segments 10 in the width direction of the beam segments 10, adjusts the joint spacing of the two adjacent continuously connected beam segments 10 through a tensioning mechanism, and ensures the precise assembly and fixed connection of the two adjacent continuously connected beam segments 10 through a positioning mechanism and a connecting mechanism. The assembly of large-segment steel beams is achieved through the joint cooperation of multiple mechanisms, which is less affected by the high-altitude environment, has low stability difficulty, is easy to install and position, has low safety risks, reduces assembly costs, and shortens assembly time.

[0059] The above is only a preferred embodiment of the utility model, and does not limit the structure of the utility model in any form. Any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. A cantilever assembly structure of a steel tower beam segment, characterized in that: It comprises a connection positioning device and a lateral adjustment device installed on two adjacent continuously connected crossbeam segments (10); The connection and positioning device comprises a tensioning mechanism for adjusting the joint spacing between two adjacent continuously connected beam segments (10), a positioning mechanism for positioning the connection position of two adjacent continuously connected beam segments (10), and a connection mechanism for fixedly connecting two adjacent continuously connected beam segments (10); The transverse adjustment device comprises a pushing mechanism and a pushed mechanism which are respectively fixed on two adjacent continuously connected cross beam segments (10), push and cooperate with each other, and are used to adjust the relative positions of the two adjacent continuously connected cross beam segments (10) in the width direction of the cross beam segments (10).

2. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: The tensioning mechanism comprises a first tensioning bracket (1) and a second tensioning bracket (2) respectively fixed on two adjacent continuously connected cross beam segments (10); a tensioning screw (3) arranged along the length direction of the bridge is connected between the first tensioning bracket (1) and the second tensioning bracket (2).

3. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: The positioning mechanism comprises a positioning plate (4) and a positioning frame (5) respectively fixed on two adjacent continuously connected cross beam segments (10); the positioning frame (5) is located above the positioning plate (4); and a first positioning bolt (6) is connected between the positioning plate (4) and the positioning frame (5).

4. The steel tower beam segment cantilever assembly structure according to claim 1 or 3, characterized in that: The positioning mechanism comprises a first matching positioning bracket (7) and a second matching positioning bracket (8) respectively fixed on two adjacent continuously connected cross beam segments (10); the first matching positioning bracket (7) and the second matching positioning bracket (8) are arranged opposite to each other; and a second positioning bolt (9) is connected between the first matching positioning bracket (7) and the second matching positioning bracket (8).

5. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: The connection mechanism comprises a first connection bracket (11) and a second connection bracket (12) which are respectively fixed on two adjacent continuously connected cross beam segments (10) and arranged opposite to each other, and a connection bolt (13) is fixedly connected between the first connection bracket (11) and the second connection bracket (12).

6. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: The push mechanism comprises a push device (14) fixed on the cross beam segment (10), and the push device (14) comprises a power output end which can reciprocate along the width direction of the bridge.

7. The steel tower beam segment cantilever assembly structure according to claim 6, characterized in that: The thrust receiving mechanism comprises a thrust receiving bracket (15) fixed on the cross beam segment (10) and used for bearing the thrust force of the power output end of the thrust resisting device (14).

8. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: A plurality of the positioning mechanisms are arranged at the top connection points and the bottom connection points of the two adjacent continuously connected beam segments (10).

9. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: The tensioning mechanism, the positioning mechanism and the connecting mechanism located on the same crossbeam segment (10) are fixedly connected to form an integrated structure.

10. The steel tower beam segment cantilever assembly structure according to claim 1, characterized in that: A plurality of the transverse adjustment devices are arranged at the top connection and the bottom connection of the two adjacent continuously connected beam segments (10).