Assembly type tower device for integrally lifting arch rib of steel arch bridge

Abstract

The utility model discloses a steel arch bridge arch rib integral lifting assembly type tower device, and relates to the technical field of bridge construction. The steel arch bridge arch rib integral lifting assembly type tower device comprises a tower footing and an assembly type tower and is characterized in that the tower footing comprises a tower bottom embedded part, the tower bottom embedded part is fixedly connected with a main beam, the embedded part comprises an anchoring steel plate and an anchoring steel bar, and the assembly type tower is assembled by adopting a steel pipe stand column standard sheet assembly, a transverse connection hoisting unit and a tower top distribution beam unit. The assembly type tower further comprises a low-position assembling support and a vertical lifting support, and the low-position assembling support comprises a steel pipe stand column piece assembling unit and a transverse connection hoisting unit. According to the assembled tower device for integrally lifting the arch rib of the steel arch bridge, a traditional method for vertically lifting and erecting a triangular rigid support at the bottom of the arch rib to keep the linear stability of the arch rib is improved, a steel anchor box is erected on a tower top platform of the assembled tower, and the linear stability of the arch rib is kept through a temporary cable-stayed buckle cable device.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, concretely is a kind of steel arch bridge arch rib integral hoisting assembly tower device. BACKGROUND

[0002] Assembly tower integral vertical hoisting is a common method in steel arch bridge arch rib assembly construction, for the complex environment of limited construction operation space, bridge site topography water level, assembly platform is difficult to build, and the arch rib can be hoisted by assembly tower vertical hoisting method to avoid assembling large tower, reduce the operation difficulty and risk of high-altitude hoisting, so it is widely used in arch bridge arch rib assembly process.

[0003] But the existing steel arch bridge arch rib vertical hoisting assembly tower construction method has the following problems, the arch rib support structure used in assembly tower, is not conducive to maintaining the overall stability of arch rib linearity, the assembly tower device used in arch bridge integral hoisting, mainly shows the following points:

[0004] (1) in the existing arch bridge arch rib vertical hoisting assembly tower construction method, lifting support sets cable wind, which can easily lead to uneven stress of arch rib structure, and the arch rib line shape is difficult to keep stable;

[0005] (2) in the existing arch bridge arch rib vertical hoisting assembly tower construction method, when the arch rib is kept stable by setting support at the bottom of arch rib after integral hoisting, it affects bridge deck construction, and the construction risk coefficient is increased by setting high-altitude tower on bridge deck.

[0006] In view of the deficiencies of prior art, the utility model provides a kind of steel arch bridge arch rib integral hoisting assembly tower device to solve above-mentioned problems. INVENTION CONTENTS

[0007] In view of the deficiencies of prior art, the utility model provides a kind of steel arch bridge arch rib integral hoisting assembly tower device, improves the method of traditional arch bridge arch rib vertical hoisting to set triangular rigid support at the bottom of arch rib to keep arch rib line shape stable, sets steel anchor box on the top platform of assembly tower, keeps arch rib line shape stable by using temporary cable-stayed cable device.

[0008] To achieve the above purpose, the utility model is realized by the following technical scheme: a kind of steel arch bridge arch rib integral hoisting assembly tower device, including tower base and assembly tower, the tower base includes tower bottom embedded part, the tower bottom embedded part is consolidated with main beam, the embedded part includes anchor steel plate and anchor steel bar;

[0009] The assembly tower is assembled by steel pipe column standard piece, horizontal connection hoisting unit and top distribution beam unit, and further includes low-position assembly support and vertical hoisting support.

[0010] The low-position assembling support comprises a steel pipe stand column piece assembling unit and a transverse connection hoisting unit, the bottom of the steel pipe stand column piece assembling unit is connected with an anchor on a main beam, and the top of the steel pipe stand column piece assembling unit is provided with a distribution beam, and the transverse connection hoisting unit comprises a support upper chord, a support inclined web and a support lower chord.

[0011] The vertical lifting support comprises a steel pipe stand column piece assembling unit, a transverse connection hoisting unit, a vertical lifting sling, a horizontal cable, a temporary cable-stayed cable and a continuous jack, the bottom of the steel pipe stand column piece assembling unit is connected with an anchor on a main beam, the temporary cable-stayed cable is symmetrically arranged on the side of the steel pipe stand column piece assembling unit, the continuous jack is arranged on the distribution beam platform, the lower part of the continuous jack is connected with the vertical lifting sling, and the vertical lifting sling is connected with the horizontal cable.

[0012] Preferably, the embedded part is embedded during the construction of the main beam structure, and the embedded part is symmetrically arranged along the bridge axis in the longitudinal direction.

[0013] Preferably, the distribution beam is symmetrically arranged along the two sides of the bridge axis when the low-position assembling support is installed.

[0014] Preferably, the transverse connection hoisting unit is a steel truss structure.

[0015] Preferably, the two sides of the tower top distribution beam are provided with a first steel anchor box and a second steel anchor box, and the first steel anchor box and the second steel anchor box are used for anchoring the temporary cable-stayed cable of the arch rib.

[0016] Preferably, one end of the temporary cable-stayed cable at the position of the arch rib is anchored on the tower top distribution beam through an anchor box, and the other end is anchored on an arch rib lifting lug.

[0017] Preferably, the steel pipe stand standard piece assembling unit is sequentially welded and assembled at the bottom of the tower.

[0018] Preferably, the tower top distribution beam is connected with a tower column head.

[0019] The utility model discloses a kind of steel arch bridge arch rib integral lifting assembly type tower device, it has the beneficial effects as follows:

[0020] 1, the steel arch bridge arch rib integral lifting assembly type tower device, the method for improving traditional arch bridge arch rib vertical lifting erection arch rib bottom triangle rigid support to keep arch rib linear stability, erects steel anchor box on assembly type tower tower top platform, using temporary cable-stayed cable device, keeps arch rib linear stability.

[0021] 2. The steel arch bridge arch rib integral lifting assembled tower device adopts steel pipe column standard piece installation, cross-link hoisting unit, tower top distribution beam unit assembly. The steel pipe column standard piece installation unit is welded and assembled in sequence at the bottom of the tower, avoiding the tedious workload of setting up the arch bottom support of the traditional assembled tower, reducing the risk factor of high-altitude installation, speeding up the construction progress, and saving economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a horizontal view of the assembled bracket of the utility model;

[0024] Figure 2 This is a longitudinal diagram of the assembled bracket of the utility model;

[0025] Figure 3 This is the first step of the vertical lifting construction of the steel pipe arch of the utility model;

[0026] Figure 4 This is the second step of the vertical lifting construction of the steel pipe arch of the utility model;

[0027] Figure 5 This is the third step of the vertical lifting construction of the steel pipe arch of the utility model;

[0028] Figure 6 This is the fourth step of the vertical lifting construction of the steel pipe arch of the utility model;

[0029] Figure 7 This is the fifth step of the vertical lifting construction of the steel pipe arch of the utility model;

[0030] Figure 8 This is the sixth step of the vertical lifting construction of the steel pipe arch of the utility model;

[0031] Figure 9 This is the seventh step in the vertical lifting construction of the steel pipe arch of the present utility model.

[0032] In the figure: 1. Continuous jack; 2. Tower top distribution beam; 3. Tower column head; 4. Support upper chord; 5. Steel pipe column; 6. Support diagonal web; 7. Support lower chord; 8. Embedded parts; 9. First steel anchor box; 10. Tower crane; 11. Vertical lifting support; 12. Truck crane; 13. Low-position assembly support; 14. Horizontal cable; 15. Vertical lifting sling; 16. Second steel anchor box; 17. Distribution beam; 18. Arch rib lifting lug; 19. Temporary diagonal cable. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] The embodiment of the present application provides a steel arch bridge arch rib integral lifting assembly type tower device, and the technical problems to be solved by the present application are that the linearity of the arch rib cannot be kept stable during integral vertical lifting of the arch rib of the steel arch bridge using the assembly type tower, and the support erected at the bottom of the arch rib affects the bridge deck construction and increases the construction risk coefficient.

[0035] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and specific embodiments.

[0036] The embodiment of the present application discloses a steel arch bridge arch rib integral lifting assembly type tower device, according to the accompanying drawings Figures 1-9 As shown in the drawings, the device comprises a tower foundation and an assembly type tower, the tower foundation comprises a tower bottom embedded part 8, the tower bottom embedded part 8 is fixed with a main beam, the embedded part 8 comprises an anchoring steel plate and anchoring steel bars, and the stability of the tower is ensured.

[0037] The assembly type tower is assembled by using a steel pipe stand column 5 standard piece, a transverse connection hoisting unit and a tower top distribution beam 2 unit, and further comprises a low-position assembly support 13 and a vertical lifting support 11. The modular design facilitates rapid erection and disassembly, and improves construction efficiency.

[0038] The low-position assembly support 13 comprises a steel pipe stand column 5 piece assembly unit and a transverse connection hoisting unit, the bottom of the steel pipe stand column 5 piece assembly unit is connected with the anchoring part on the main beam, and the top of the steel pipe stand column 5 piece assembly unit is provided with a distribution beam 17, the transverse connection hoisting unit comprises a support upper chord 4, a support inclined web 6 and a support lower chord 7. The low-position assembly support 13 is used for preliminary assembly of the arch rib, and the vertical lifting support 11 is used for lifting the arch rib to a designed position. Both of them comprise the steel pipe stand column 5 piece assembly unit and the transverse connection hoisting unit, so as to ensure the stability and bearing capacity of the structure.

[0039] The vertical lifting bracket 11 includes a 5-piece unit of steel pipe columns, a horizontal lifting unit, a vertical lifting sling 15, a horizontal cable 14, a temporary oblique cable 19, and a continuous jack 1. The bottom of the 5-piece unit of the steel pipe column is connected to the anchor on the main beam, and the temporary oblique cable 19 is symmetrically arranged on the side of the 5-piece unit of the steel pipe column. The continuous jack 1 is erected on the distribution beam 17 platform, and the lower part of the continuous jack 1 is connected to the vertical lifting sling 15, and the vertical lifting sling 15 is connected to the horizontal cable 14.

[0040] The embedded parts 8 are embedded during the construction of the main beam structure to improve the stability of the overall structure. The embedded parts 8 are arranged symmetrically along the longitudinal axis of the bridge to ensure that the tower is evenly stressed on the bridge deck.

[0041] The distribution beams 17 are symmetrically arranged along the bridge axis when the low-position assembly bracket 13 is installed. When the low-position assembly bracket 13 is installed, the distribution beams 17 are symmetrically arranged along the bridge axis to disperse and transfer the weight of the arch ribs.

[0042] The horizontal lifting unit is a steel truss structure, which has high strength and good stability.

[0043] A first steel anchor box 9 and a second steel anchor box 16 are provided on both sides of the tower top distribution beam 2. The first steel anchor box 9 and the second steel anchor box 16 are used to anchor the temporary oblique cable 19 of the arch rib to ensure the stability of the arch rib during the lifting process.

[0044] One end of the temporary inclined cable 19 at the arch rib position is anchored to the tower top distribution beam 2 through the anchor box, and the other end is anchored to the arch rib lug 18 to form a stable support system.

[0045] The 5 standard piece-mounted units of the steel pipe column are welded and assembled in sequence at the bottom of the tower to ensure the integrity and stability of the tower.

[0046] The tower top distribution beam 2 is connected to a tower column head 3, which is used to further reinforce the tower top structure and improve the overall stability.

[0047] The construction method of the assembled tower for integrally lifting an arch bridge comprises the following steps:

[0048] Step 1: As attached Figure 3 As shown, a low-position assembly bracket 13 is set up, and the tower crane 10 and the automobile crane 12 are used to lift the arch rib segments of the side arch section in situ according to the design elevation, and temporary cross braces are installed at the corresponding positions. The mid-span arch rib segments are lifted toward the mid-span by the automobile crane 12, and temporary cross braces and corresponding cross braces except for the mid-span are installed.

[0049] Step 2: As attached Figure 4As shown, erect vertical lifting support 11, install vertical lifting cable 15 and horizontal cable 14, pre-tighten horizontal cable 14 after installation, install lateral bracing on both sides of the mid-span segment, remove temporary lateral bracing, and exit automobile crane 12. Lift the entire mid-span arch rib segment, remove the support, and check the entire lifting system for any abnormal phenomena. Remove the distribution beam 17 on the top of the mid-span assembly support.

[0050] Step 3: as shown in the accompanying Figure 5 As shown, use vertical lifting cable 15 to lift the mid-span arch rib segment to the designed position. During the lifting of the entire arch rib, in order to eliminate the influence of lifting support deformation on the line shape of the closing arch rib, adjust the low-position assembly support 13 distribution beam saddle of the side segment arch rib through continuous jack 1 to adjust the line shape of the entire arch rib, and complete the lifting of the mid-span arch rib segment.

[0051] Step 4: as shown in the accompanying Figure 6 As shown, set up temporary arch rib stay cable 19, which is symmetrically arranged along the bridge axis, one end is installed on vertical lifting support 11, and the other end is connected through temporary arch rib lifting lug 18 set up at the upper end of the arch rib. Pre-tighten temporary arch rib stay cable 19.

[0052] Step 5: as shown in the accompanying Figure 7 As shown, simultaneously release horizontal cable 14, unload cable force in stages, symmetrically unload in stages, and after each unloading stage is completed, stand still for a period of time and observe whether the arch rib line shape changes. Avoid uneven stress on both sides of the arch rib during one-time unloading process, which affects the change of line shape and elevation. Until unloading is completed.

[0053] Step 6: as shown in the accompanying Figure 8 As shown, remove low-position assembly support 13, and the arch rib is supported by pre-tightened temporary arch rib stay cable 19 to stabilize the line shape, avoiding deviation of the arch rib line shape during the support removal process and the bridge deck construction process.

[0054] Step 7: as shown in the accompanying Figure 9 As shown, remove temporary arch rib stay cable 19 and vertical lifting support 11. After unloading pre-tightened temporary arch rib stay cable 19, sequentially remove temporary arch rib stay cable 19 anchored on arch rib lifting lug 18, and remove vertical lifting support 11.

[0055] In summary, compared with the existing assembly tower construction method for vertical lifting of the arch rib of a steel arch bridge, the present application has the following advantages:

[0056] 1. The method for improving the traditional arch rib vertical lifting of the arch rib of an arch bridge to maintain the stability of the arch rib line shape by erecting a steel anchor box on the top platform of the assembly tower and using temporary stay cable 19 to maintain the stability of the arch rib line shape.

[0057] 2. The steel pipe column 5 standard piece is adopted, the horizontal connection hoisting unit, the tower top distribution beam 2 unit assembly, the steel pipe column 5 standard piece unit is sequentially welded and assembled at the tower bottom, avoids the cumbersome workload of the arch bottom support of the traditional assembly type tower erection, reduces the dangerous coefficient of high-altitude installation, speeds up the construction progress, saves the economic cost.

[0058] It should be noted that, in this document, the terms "first" and "second", and the like, merely identify features of the entities or operations in a way that distinguishes one entity or operation from another, without necessarily implying any actual relationship or order between such entities or operations. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0059] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A steel arch bridge arch rib integral lifting assembled tower device, comprising a tower base and an assembled tower, characterized in that: The tower base includes a tower bottom embedded part (8), the tower bottom embedded part (8) is fixed to the main beam, and the embedded part (8) includes an anchor steel plate and an anchor steel bar; The assembled tower is assembled using standard steel pipe columns (5), horizontal lifting units, and tower top distribution beams (2). The assembled tower also includes a low-position assembly bracket (13) and a vertical lifting bracket (11). The low-position assembly bracket (13) includes a steel pipe column (5) sheet unit and a cross-linked hoisting unit, the bottom of the steel pipe column (5) sheet unit is connected to an anchor on the main beam, the top of the steel pipe column (5) sheet unit is provided with a distribution beam (17), and the cross-linked hoisting unit includes a bracket upper chord (4), a bracket diagonal web (6) and a bracket lower chord (7); The vertical lifting bracket (11) includes a steel pipe column (5) plate-mounted unit, a horizontal lifting unit, a vertical lifting sling (15), a horizontal cable (14), a temporary inclined cable (19), and a continuous jack (1). The bottom of the steel pipe column (5) plate-mounted unit is connected to an anchor on the main beam. The temporary inclined cable (19) is symmetrically arranged on the side of the steel pipe column (5) plate-mounted unit. A continuous jack (1) is installed on the distribution beam (17) platform. The lower part of the continuous jack (1) is connected to the vertical lifting sling (15), and the vertical lifting sling (15) is connected to the horizontal cable (14).

2. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: The embedded parts (8) are embedded during the construction of the main beam structure, and the embedded parts (8) are arranged symmetrically along the longitudinal axis of the bridge.

3. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: The distribution beams (17) are symmetrically arranged along both sides of the bridge axis when the low-position assembly bracket (13) is installed.

4. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: The transverse hoisting unit is a steel truss structure.

5. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: A first steel anchor box (9) and a second steel anchor box (16) are provided on both sides of the tower top distribution beam (2), and the first steel anchor box (9) and the second steel anchor box (16) are used to anchor the temporary oblique stay cables (19) of the arch ribs.

6. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: One end of the temporary inclined cable (19) at the arch rib position is anchored to the tower top distribution beam (2) through an anchor box, and the other end is anchored to the arch rib lifting lug (18).

7. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: The standard sheet-mounted units of the steel pipe columns (5) are welded and assembled in sequence at the bottom of the tower.

8. The steel arch bridge arch rib integral lifting assembled tower device according to claim 1, characterized in that: The tower top distribution beam (2) is connected to a tower column head (3).

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