Temporary supporting device for cantilever assembly in road and bridge construction

Abstract

The utility model provides a temporary supporting device for cantilever assembly in road and bridge construction, which relates to the technical field of road and bridge construction and comprises a vertical column, a supporting rod, a foot column and a sleeve pile assembly. According to the temporary supporting device for cantilever assembly in road and bridge construction, after the concrete pile is sleeved with the base, the two sleeves slide inwards, so that the two sleeves are attached together, the upper end of the concrete pile is surrounded, the short half shaft of the fixing sleeve and the short half shaft of the connecting piece are aligned and coincide, and then the concrete pile is assembled. The fixing sleeve is arranged on the two side column heads on the same side of the two sleeves in a sleeving mode, the fixing sleeve is rotated to enable the short half shaft position of the fixing sleeve to be transferred to the long half shaft position of the connecting piece, in the rotating process, the fixing sleeve deforms, the two side column heads are tightly hooped together, and connection of the two sleeves is further reinforced by fastening the long bolt. The contact area of the sleeve pile assembly and the concrete pile is increased, the external load can be effectively shared, the pressure of a single contact point is reduced, and therefore local overload and stress concentration are avoided.

Description

Technical Field

[0001] This utility model relates to the field of road and bridge construction technology, and in particular to a temporary support device for cantilever assembly in road and bridge construction. Background Technology

[0002] Temporary support devices for cantilever bridge construction are temporary support structures erected during the construction of roads and bridges to ensure the stability and safety of the cantilever structure. They serve as temporary supports and transfer of supporting forces during the construction of cantilever bridges. They are commonly used in cantilever construction methods (such as cantilever assembly methods), which involve assembling the bridge structure segment by segment. Before the cantilever section of the bridge is completed and fully connected, it may be suspended in the air or subjected to uneven loads. The temporary support devices provide the necessary supporting force to prevent the structure from tilting or sinking, ensuring construction safety.

[0003] A search revealed Chinese patent CN218466359U, which discloses a "temporary consolidation structure for a large cantilever bridge." This application discloses a structure where "the pier is fixed to the top of the abutment; the top of the pier is fixed to the beam via multiple temporary and permanent supports; a base plate is fixed to the bottom of the cantilever ends on both sides of the beam; steel protective pipes are fixed to both ends of the top of the abutment and wrapped around the sides of the pier; the top of the steel protective pipes is fixedly connected to the bottom of the beam; and an auxiliary consolidation support mechanism is provided between the base plate and the side wall of the abutment. This invention can provide auxiliary consolidation support for the cantilever when the cantilever on both sides of the beam bridge is long." While this device can support the cantilever on both sides of the bridge, it does not have sufficient contact with the ground and lacks adequate support force to ensure the stability of the bridge cantilever section, resulting in poor support stability. Utility Model Content

[0004] This utility model provides a temporary support device for cantilever assembly in road and bridge construction, which solves the problems mentioned in the background art, such as insufficient contact with the ground, lack of sufficient support force to ensure the stability of the cantilever part of the bridge, and poor support stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a temporary cantilever assembly support device for road and bridge construction, comprising columns, support rods, foot posts, and a pile sleeve assembly. A bridge deck is provided at the upper end of the bridge pier, and cantilevers extend from the bridge deck to both ends. Columns are provided below each of the two cantilevers, one end of each column is fixed to the cantilever, and both ends of the support rod are bolted to the column and the cantilever, respectively. One end of the foot post is bolted to one side of the support rod. A concrete pile is provided on the side of the column away from the bridge pier. The pile sleeve assembly is provided at the other end of the foot post. The pile sleeve assembly includes a base, a sleeve, and a fixing sleeve. The base is sleeved on the outside of the concrete pile. Two sleeves are slidably connected to the upper end of the base. Side column heads are fixedly connected to both sides of each sleeve. The fixing sleeve is sleeved on the two side column heads on the same side of the two sleeves. A long bolt is provided through the fixing sleeve.

[0006] Preferably, the column is set vertically.

[0007] Preferably, a pile hole is formed through the upper surface of the base, and the concrete pile is located in the pile hole.

[0008] Preferably, the diameter of the pile hole is the same as the diameter of the concrete pile, and the inner diameter of the sleeve is the same as the diameter of the concrete pile.

[0009] Preferably, a sliding groove is provided on both sides of the pile hole, and the sliding groove is formed on the base.

[0010] Preferably, a slide bar is fixedly connected to the lower end of the sleeve, and the slide bar is slidably connected in the groove.

[0011] Preferably, the two side columns on the same side of the two sleeves can be aligned and spliced ​​into an elliptical connector.

[0012] Preferably, the fixing sleeve is a soft metal collar, and the inner ring of the fixing sleeve is elliptical.

[0013] Preferably, the short half-axis of the inner ring of the fixing sleeve is the same as the short half-axis of the outer contour of the connector.

[0014] Preferably, a hydraulic pump is fixedly connected to the other side of the support rod, and the output shaft end of the hydraulic pump is fixed to the cantilever.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Concrete piles are poured at designated locations on the ground and reinforced with steel bars. The foot columns support the support rods, and the base is fitted onto the concrete piles. This ensures that the foot columns will not slip when subjected to the reaction force of the support rods, providing sufficient support for the stability of the bridge cantilever section.

[0017] 2. After the base is fitted onto the concrete pile, slide the two sleeves inward so that they fit together, surrounding the upper part of the concrete pile. Align the short half-axis of the fixing sleeve with the short half-axis of the connector, so that the fixing sleeve fits onto the two side columns on the same side of the two sleeves. Rotate the fixing sleeve so that the position of the short half-axis of the fixing sleeve moves to the position of the long half-axis of the connector. During the rotation, the fixing sleeve will deform, tightly clamping the two side columns together. Through holes are opened on the circumferential side of the side columns, and the through holes on the two side columns are aligned. A through hole is opened at the position of the long half-axis of the fixing sleeve. Long bolts are inserted into the through holes and through holes. By tightening the long bolts, the connection between the two sleeves is further strengthened, increasing the contact area between the pile assembly and the concrete pile. This can effectively distribute the external load, reduce the pressure at a single contact point, and thus avoid local overload and stress concentration. This helps to improve the bearing capacity of the concrete pile, enabling it to withstand greater loads. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cantilever assembly temporary support device of this utility model;

[0019] Figure 2 This is a structural schematic diagram of the installation method of the cantilever assembly temporary support device of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sleeve and the base of this utility model.

[0021] Figure 4 This is a schematic diagram of the base structure of this utility model;

[0022] Figure 5 This is a structural schematic diagram of the mounting position of the fixing sleeve of this utility model;

[0023] Figure 6 for Figure 5 Enlarged view of point A.

[0024] The following are the labeling elements in the diagram: 1. Pier; 2. Bridge deck; 21. Cantilever; 3. Column; 4. Support rod; 5. Hydraulic pump; 6. Foot column; 7. Concrete pile; 8. Pile assembly; 81. Base; 811. Pile hole; 812. Slide groove; 82. Sleeve; 821. Sliding strip; 822. Side column head; 83. Fixing sleeve; 84. Long bolt. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] This utility model provides a temporary support device for cantilever assembly in road and bridge construction, such as... Figure 1 and Figure 2 As shown, the structure includes columns 3, support rods 4, foot posts 6, and pile assembly 8. A bridge deck 2 is mounted on the upper end of the pier 1, with cantilever arms 21 extending from both ends. Columns 3 are vertically positioned below each cantilever arm 21, with one end fixed to the cantilever arm 21 and the other end fixed to the ground. The two ends of the support rods 4 are bolted to the columns 3 and cantilever arms 21, respectively. One end of the foot post 6 is bolted to one side of the support rod 4, and a hydraulic pump 5 is fixedly connected to the other side of the support rod 4. The output shaft of the hydraulic pump 5 is fixed to the cantilever arm 21. The columns 3 provide support below the bridge deck 2, forming a triangular structure with the support rods 3, support rods 4, and cantilever arms 21, providing stable support for the cantilever arms 21. The output end of the hydraulic pump 5 abuts against the lower end of the cantilever arm 21, increasing the number of support points and reducing the pressure on individual support points, thus improving the overall load-bearing capacity of the structure.

[0027] like Figure 2 and Figure 3 As shown, a concrete pile 7 is installed on the side of the column 3 away from the pier 1. The concrete pile 7 is vertically inserted into the ground. A sleeve assembly 8 is installed at the other end of the foot column 6. The sleeve assembly 8 includes a base 81, a sleeve 82, and a fixing sleeve 83. A pile hole 811 is opened through the upper surface of the base 81. The base 81 is sleeved on the outside of the concrete pile 7, and the concrete pile 7 is located in the pile hole 811. The diameter of the pile hole 811 is the same as the diameter of the concrete pile 7. The base 81 is horizontally set, and the bottom surface of the base 81 is in contact with the ground. The flat plate-shaped base 81 can be more easily inserted into the concrete pile 7. The concrete pile 7 is poured at the designated position on the ground and reinforced with steel bars. The foot column 6 supports the support rod 4. At the same time, the base 81 is sleeved on the concrete pile 7, which can ensure that the foot column 6 will not slip when subjected to the reaction force of the support rod 4, providing sufficient support for the stability of the bridge cantilever 21.

[0028] like Figure 4 and Figure 5As shown, two sleeves 82 are slidably connected to the upper end of the base 81. The inner diameter of the sleeves 82 is the same as the diameter of the concrete pile 7. Slide grooves 812 are provided on both sides of the pile hole 811, and the slide grooves 812 are formed on the base 81. A sliding strip 821 is fixedly connected to the lower end of the sleeve 82, and the sliding strip 821 is slidably connected in the slide groove 812. Side column heads 822 are fixedly connected to both sides of the sleeve 82, as shown... Figure 6 As shown, the two side columns 822 on the same side of the two sleeves 82 can be aligned and spliced ​​into an elliptical connector. A fixing sleeve 83 is fitted onto the two side columns 822 on the same side of the two sleeves 82. The fixing sleeve 83 is a soft metal collar with an elliptical inner ring. The short half-axis of the inner ring of the fixing sleeve 83 matches the short half-axis of the outer contour of the connector. A long bolt 84 is threaded through the fixing sleeve 83. After the base 81 is fitted onto the concrete pile 7, the two sleeves 82 are slid inwards, causing them to fit together and surround the upper part of the concrete pile 7. The short half-axis of the fixing sleeve 83 is aligned and overlapped with the short half-axis of the connector, so that the fixing sleeve 83 is fitted onto the two side columns 822 on the same side of the two sleeves 82. Rotating the fixing sleeve 83 causes the short half-axis of the fixing sleeve 83 to shift to the long half-axis position of the connector. During rotation, the fixing sleeve 83 deforms, tightly clamping the two side columns 822 together. A through hole is provided on the circumferential side of the side column head 822. The through holes on the two side column heads 822 are aligned. A through hole is provided at the long half-axis position of the fixing sleeve 83. Long bolts 84 are inserted into the through hole and the through hole. By tightening the long bolts 84, the connection between the two sleeves 82 is further strengthened, which increases the contact area between the pile assembly 8 and the concrete pile 7. This can effectively distribute the external load and reduce the pressure at a single contact point, thereby avoiding local overload and stress concentration. This helps to improve the bearing capacity of the concrete pile 7, enabling it to withstand greater loads.

[0029] Using this utility model, such as Figure 1 and Figure 2As shown, concrete piles 7 are poured at designated locations on the ground and reinforced with steel bars. The foot posts 6 support the support rods 4, while the base 81 is fitted onto the concrete piles 7. This ensures that the foot posts 6 will not slip when subjected to the reaction force of the support rods 4, providing sufficient support for the stability of the bridge cantilever 21. After the base 81 is fitted onto the concrete piles 7, the two sleeves 82 are slid inwards, causing them to fit together and surround the upper part of the concrete piles 7. The short half-axis of the fixing sleeve 83 is aligned and overlapped with the short half-axis of the connector, so that the fixing sleeve 83 is fitted onto the two side column heads 822 on the same side of the two sleeves 82. Rotating the fixing sleeve 83 causes the short half-axis of the fixing sleeve 83 to... The half-shaft position is transferred to the long half-shaft position of the connector. During the rotation, the fixing sleeve 83 will deform and tighten the two side column heads 822 together. Through holes are opened on the circumferential side of the side column heads 822. The through holes on the two side column heads 822 are aligned. A through hole is opened at the long half-shaft position of the fixing sleeve 83. Long bolts 84 are inserted into the through holes and through holes. By tightening the long bolts 84, the connection between the two sleeves 82 is further strengthened, and the contact area between the pile assembly 8 and the concrete pile 7 is increased. This can effectively distribute the external load and reduce the pressure at a single contact point, thereby avoiding local overload and stress concentration. This helps to improve the bearing capacity of the concrete pile 7, enabling it to withstand greater loads.

[0030] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cantilever assembling temporary support device in a road bridge construction, characterized in that, The bridge pier (1) is provided with a bridge plate (2) at the upper end, the bridge plate (2) extends two cantilevers (21) at both ends, the two cantilevers (21) are provided with a stand column (3) below, one end of the stand column (3) is fixed on the cantilever (21), the two ends of the support rod (4) are bolted on the stand column (3) and the cantilever (21) respectively, one end of the foot column (6) is bolted on one side of the support rod (4), the stand column (3) is provided with a concrete pile (7) away from the bridge pier (1), the sleeve pile assembly (8) is arranged at the other end of the foot column (6), the sleeve pile assembly (8) comprises a base (81), a sleeve (82) and a fixed sleeve (83), the base (81) is sleeved on the outside of the concrete pile (7), the upper end of the base (81) is slidably connected with two sleeves (82), the two sides of the sleeve (82) are fixedly connected with side column heads (822), the fixed sleeve (83) is sleeved on the two side column heads (822) on the same side of the two sleeves (82), and the fixed sleeve (83) is provided with a long bolt (84).

2. The cantilever assembling temporary support device in the road and bridge construction according to claim 1, characterized in that, The stand column (3) is vertically arranged.

3. The cantilever assembling temporary support device in the road and bridge construction according to claim 1, characterized in that, The upper surface of the base (81) is provided with a pile hole (811), and the concrete pile (7) is located in the pile hole (811).

4. The cantilever assembling temporary support device in the road and bridge construction according to claim 3, characterized in that, The diameter of the pile hole (811) is consistent with the diameter of the concrete pile (7), and the inner diameter of the sleeve (82) is consistent with the diameter of the concrete pile (7).

5. The cantilever assembling temporary support device in the road and bridge construction according to claim 3, characterized in that, Both sides of the pile hole (811) are provided with a sliding groove (812), and the sliding groove (812) is arranged on the base (81).

6. The cantilever assembling temporary support device in the road and bridge construction according to claim 5, characterized in that, The lower end of the sleeve (82) is fixedly connected with a sliding strip (821), and the sliding strip (821) is slidably connected in the sliding groove (812).

7. The cantilever assembling temporary support device in the road and bridge construction according to claim 1, characterized in that, The two side column heads (822) on the same side of the two sleeves (82) can be aligned and spliced into an elliptical connecting piece.

8. The cantilever assembling temporary support device in the road and bridge construction according to claim 7, characterized in that, The fixed sleeve (83) is a soft metal sleeve ring, and the inner ring of the fixed sleeve (83) is elliptical.

9. The cantilever assembling temporary support device in the road and bridge construction according to claim 8, characterized in that, The short semi-axis of the inner ring of the fixed sleeve (83) is consistent with the short semi-axis size of the outer contour of the connecting piece.

10. The cantilever assembling temporary support device in road and bridge construction according to claim 1, characterized in that, The other side of the support rod (4) is fixedly connected with a hydraulic pump (5), and the output shaft end of the hydraulic pump (5) is fixed on the cantilever (21).

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