Underwater slideway cross beam and pile foundation connecting structure

Abstract

The utility model relates to the technical field of underwater slideways, in particular to an underwater slideway cross beam and pile foundation connecting structure which comprises an underwater slideway cross beam, an underwater pile foundation, a pile cap and a shear-resistant connecting structure. A reserved cavity is formed in the bottom of the underwater slideway cross beam; a reserved corrugated pipe is arranged in the reserved cavity, and a grouting hole is formed in the top of the underwater slideway cross beam; the top of the underwater pile foundation is connected with a pile cap; a shear-resistant connecting structure is pre-embedded in the top of the pile cap; and the top of the anti-shearing connecting structure extends into the reserved corrugated pipe. The reserved cavity and the reserved corrugated pipe are arranged in the underwater slideway cross beam, the underwater slideway cross beam can be conveniently connected with a shear-resistant connecting structure, the inner wall of the reserved corrugated pipe is in a corrugated broken line shape, and the overall connecting performance is improved after grouting. The top of the anti-shear connecting structure extends into the reserved corrugated pipe, so that the anti-shear capacity is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to underwater slide technical field, concretely relates to a kind of underwater slide well beam and pile foundation connecting structure. BACKGROUND

[0002] The slide is the inclined ramp for connecting the berth and water area for the ship on the berth and launching in the ship repair yard and shipyard, wherein, the underwater part is underwater slide. In order to facilitate construction, the underwater slide is usually spliced with prefabricated well beam and underwater pile foundation. In the traditional construction method, the well beam is connected with the pile foundation at an inclined surface, which is not conducive to the positioning and fixing of the well beam, and the construction precision is difficult to control, and the construction efficiency is low. On the other hand, the well beam and pile foundation cap connection has poor integrity, and the shear resistance is insufficient when facing the impact of large ships. SUMMARY

[0003] In view of the problems existing in the above-mentioned existing construction technology, the utility model provides a kind of underwater slide well beam and pile foundation connecting structure, solves the problem of insufficient shear resistance of well beam in the prior art.

[0004] The utility model provides a kind of underwater slide well beam and pile foundation connecting structure, which comprises: underwater slide well beam, underwater pile foundation, pile cap and shear connection structure;The bottom of the underwater slide well beam is provided with a reserved cavity;A reserved bellows is arranged in the reserved cavity, and the top of the underwater slide well beam is provided with a grouting hole communicated with the reserved cavity and the reserved bellows;The top of the underwater pile foundation is connected with the pile cap;The top of the pile cap is embedded with the shear connection structure;The top of the shear connection structure extends into the reserved bellows;The reserved cavity and the reserved bellows are filled with grouting material to connect the underwater slide well beam, the pile cap and the shear connection structure.

[0005] Further, the reserved cavity is provided with reinforcing steel bars around the reserved bellows.

[0006] Further, the top of the reserved bellows is lower than the top of the reserved cavity.

[0007] Further, the shear connection structure comprises a core column steel reinforcement cage and a shear steel inside the core column steel reinforcement cage;The top of the core column steel reinforcement cage and the shear steel is inserted into the reserved bellows.

[0008] Further, the length of the shear steel anchored into the reserved bellows is greater than or equal to 60 cm.

[0009] Further, the pile cap is provided with pile cap steel bars;The bottom of the core column steel reinforcement cage is connected with the pile cap steel bars.

[0010] Furthermore, the underwater glide trough beam includes two underwater glide beams and two connecting beams; the connecting beams connect the two underwater glide beams; the reserved cavity is located at the bottom of the underwater glide beams and is arranged near the end of the underwater glide beams.

[0011] Furthermore, the bottom of the underwater slide beam is provided with a horizontal connecting foot located around the reserved cavity; the horizontal connecting foot sits on the top of the pile cap.

[0012] By setting horizontal connecting feet, the inclined connection at the bottom of the underwater slide beam is converted into a horizontal connection, which helps to position and fix the underwater slide grid beam, facilitates precision control and adjustment, and improves construction efficiency.

[0013] The beneficial effects of this utility model are as follows: By setting a reserved cavity and a reserved corrugated pipe in the underwater chute beam, it is easy to connect with the shear-resistant connection structure. The inner wall of the reserved corrugated pipe is corrugated and zigzag-shaped, which increases the overall connection performance after grouting. By extending the top of the shear-resistant connection structure into the reserved corrugated pipe, the shear resistance is improved. Attached Figure Description

[0014] Figure 1 This is a partial structural diagram of the connection structure between the underwater slide girder and the pile foundation of this utility model;

[0015] Figure 2 This is a top view of the underwater chute grid beam structure of this utility model;

[0016] Figure 3 This is a side view of the connection structure between the underwater slide girder and the pile foundation of this utility model.

[0017] Figure 4 for Figure 1 A partial structural diagram of the grid beams of the waterway chute;

[0018] Figure 5 for Figure 1 Structural diagram of underwater pile foundation, pile cap, and shear connection structure;

[0019] Figure 6 for Figure 5 A schematic diagram of a medium shear connection structure.

[0020] In the diagram: 1-Underwater slide girder, 101-Horizontal connecting foot, 102-Pre-reserved corrugated pipe, 103-Grouting hole, 104-Underwater slide beam, 105-Connecting beam; 106-Reinforcing steel; 2-Underwater pile foundation; 3-Pile cap, 301-Pile cap reinforcement; 4-Shear-resistant connection structure, 401-Core column reinforcement cage, 402-Shear-resistant steel. Detailed Implementation

[0021] The application will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0022] As Figures 1-6 shown in one of the underwater slide cross beam and pile connection structure, comprising: underwater slide cross beam 1, underwater pile 2, pile cap 3 and shear connection structure 4.

[0023] Underwater slide cross beam 1 is composed of 2 underwater slide beams 104 and 2 connecting beams 105, which is in the shape of cross; according to the elevation of the pile cap 3 connected with the underwater pile 2, the horizontal connecting foot 101 below the underwater slide cross beam 1 is set; at the same time, according to the connection positioning, the reserved cavity is set at the bottom of the underwater slide cross beam 1, and the reserved bellows 102 is set in the reserved cavity for connecting the shear connection structure 4; the reserved cavity and the upper part of the reserved bellows 102 are provided with grouting holes 103. The underwater slide cross beam 1 is prefabricated at the construction site.

[0024] As Figures 5-6 shown, the underwater pile 2 adopts bored pile, and the pile foundation construction can be completed by island building method or steel cofferdam method. In this embodiment, the island building method is used to complete the pile foundation construction by rotary drilling. The pile cap 3 is set after the river dredging, the pile head of the pile foundation 2 is broken, and the construction is completed. When the pile cap steel bar 301 is bound, the installation of the core column steel reinforcement cage 401 and the shear steel 402 is reserved as the shear connection structure 4 to connect the slide cross beam 1.

[0025] As Figure 1 and Figure 3 shown, the underwater slide cross beam 1 and the pile foundation 2 are connected through the reserved cavity and the shear connection structure 4, and the slide cross beam 1 and the pile foundation 2, the pile cap 3 are connected to form a whole by grouting high-strength underwater grouting material into the reserved cavity and the reserved bellows 102 through the grouting hole 103. Since the inner wall of the reserved bellows 102 is in the shape of corrugated fold line, the reserved bellows 102 can enhance the integrity of the connection between the slide cross beam 1 and the pile foundation 2 and the pile cap 3.

[0026] Specifically, as Figure 2 and Figure 4 shown, the reserved bellows 102 is a steel bellows with a diameter of 1 m and a wall thickness of not less than 1 cm; the reinforcing steel bars 106 are arranged around the reserved bellows 102 in the reserved cavity for improving the structural performance of the reserved bellows 102 and the horizontal connecting foot 101. The grouting hole 103 is set to have a diameter of 20 cm, which is convenient for the insertion of the grouting pipe in the later stage and the water discharge of the reserved cavity and the reserved bellows 102 during the grouting process.

[0027] Specifically, as Figures 5-6As shown, the main reinforcement of the core column steel cage 401 of the shear connection structure 4 is of the same diameter as the main reinforcement of the pile foundation 2, and the diameter of the core column steel cage 401 is 20 cm smaller than the inner diameter of the reserved corrugated pipe 102, facilitating butt insertion connection; the shear-shaped steel 402 is an I-beam, and the anchoring length in the reserved corrugated pipe 102 is not less than 60 cm.

[0028] The construction steps of the underwater slide H-beam and pile foundation connection structure of the embodiment are as follows:

[0029] Step 1, complete the construction of the underwater pile foundation 2. In this example, the pile foundation 2 construction operation surface is established by island building method, and the hole is formed by rotary drilling. After the hole detection is qualified, the reinforcement cage installation and concrete pouring of the pile foundation 2 are completed.

[0030] Step 2, pile cap 3 construction, pre-burying shear connection structure 4. After the river channel is dredged, a steel cofferdam is arranged at the pile foundation 2, the pile head of the underwater pile foundation 2 is broken, the pile cap steel reinforcement 301 is bound, and the shear connection structure 4 is pre-buried, and the pile cap 3 construction is completed.

[0031] Step 3, hoist the underwater slide H-beam 1. After the pile cap 3 construction is completed, the steel casing is removed. Then according to the positioning, hoist the underwater slide H-beam 1, insert the shear connection structure 4 into the reserved corrugated pipe 102, and position and install the horizontal connecting foot 101 of the underwater slide H-beam 1 on the pile cap 3.

[0032] Step 4, underwater high-strength grouting. Through the grouting hole 103, high-strength underwater grouting material is injected into the reserved corrugated pipe 102 and the reserved cavity, and the slide H-beam 1 and the pile cap 3 of the pile foundation 2 are connected to form a whole.

[0033] The above is only the preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the scope of the present application is within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application are also considered as the protection scope of the present application.

Claims

1. A connection structure between an underwater slide grate beam and a pile foundation, characterized in that, include: The underwater glide trough beam, underwater pile foundation, pile cap, and shear connection structure are provided. A reserved cavity is provided at the bottom of the underwater glide trough beam. A reserved corrugated pipe is installed within the reserved cavity. A grouting hole communicating with the reserved cavity and the reserved corrugated pipe is provided at the top of the underwater glide trough beam. A pile cap is connected to the top of the underwater pile foundation. The shear connection structure is embedded in the top of the pile cap. The top of the shear connection structure extends into the reserved corrugated pipe. Grouting material is injected into the reserved cavity and the reserved corrugated pipe to connect the underwater glide trough beam, pile cap, and shear connection structure.

2. The underwater chute grid beam and pile foundation connection structure according to claim 1, characterized in that, Reinforcing steel bars are provided around the reserved corrugated pipe within the reserved cavity.

3. The underwater slide girder and pile foundation connection structure according to claim 1, characterized in that, The top of the reserved corrugated pipe is lower than the top of the reserved cavity.

4. The underwater chute grid beam and pile foundation connection structure according to claim 1, characterized in that, The shear-resistant connection structure includes a core column steel cage and shear-resistant steel sections disposed inside the core column steel cage; the tops of the core column steel cage and the shear-resistant steel sections are inserted into the reserved corrugated pipe.

5. The underwater slide girder and pile foundation connection structure according to claim 4, characterized in that, The length of the shear-resistant steel anchored into the reserved corrugated pipe is greater than or equal to 60cm.

6. The underwater slide girder and pile foundation connection structure according to claim 4, characterized in that, The pile cap is provided with pile cap reinforcement bars; the bottom of the core column reinforcement cage is connected to the pile cap reinforcement bars.

7. The underwater chute grid beam and pile foundation connection structure according to any one of claims 1-6, characterized in that, The underwater glide trough beam includes two underwater glide beams and two connecting beams; the connecting beams connect the two underwater glide beams; the reserved cavity is located at the bottom of the underwater glide beams and is arranged near the end of the underwater glide beams.

8. The underwater slide girder and pile foundation connection structure according to claim 7, characterized in that, The bottom of the underwater slide beam is provided with a horizontal connecting foot located around the reserved cavity; the horizontal connecting foot sits on the top of the pile cap.

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