Bolt and mortise combined joint structure for well pieces of assembled open caisson
The bolt-mortise joint structure enhances the connection strength of the prefabricated caisson segments, solving the problem that existing technologies cannot simultaneously withstand bending and shear forces, and achieving a firm connection and waterproof performance for the caisson segments.
Patent Information
- Application Number
- CN202520851731.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-04-30
AI Technical Summary
The existing prefabricated caisson segment connections are insufficient when subjected to bending and shear forces, and cannot simultaneously meet the connection strength requirements of the joints.
The joint structure adopts a bolt and mortise combination, which forms a mortise and mortise fit by setting protrusions and concave parts on the joint surface of the well plate, and combines bolt connection and steel plate connection to enhance the connection strength; at the same time, a sealing structure and buffer are set at the joint to prevent water seepage and hard contact.
It achieves a firm connection between the well plates, can withstand bending and shear forces simultaneously, and has good waterproof performance and prevents hard contact.
Smart Images
Figure CN223676260U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the sinking well piece structure technical field especially relates to bolt tenon groove combined joint structure for assembly type sinking well piece. BACKGROUND
[0002] In prior art, the joint structure between the prefabricated sinking well pieces of the assembly type sinking well mostly adopts flat joint bolt connection or tenon type connection.
[0003] The flat joint bolt connection mode is relatively simple and convenient to construct, but is not conducive to the joint to bear shear force; the tenon type connection can bear shear force, but the joint is easy to be empty under the bending condition. The flat joint bolt connection or the tenon type connection cannot satisfy the stress condition that the joint bears bending and shear simultaneously.
[0004] Therefore, how to strengthen the bending and shear bearing force between the sinking well pieces of the assembly type sinking well and guarantee the connecting strength between the sinking well pieces has become a technical problem that the technical personnel in the field urgently need to solve. UTILITY MODEL CONTENTS
[0005] In view of the above defects of prior art, the utility model provides bolt tenon groove combined joint structure for assembly type sinking well piece, which realizes the purpose of improving the joint connecting strength between the sinking well pieces and satisfying the stress condition of bearing bending and shear simultaneously.
[0006] To realize the above technical purpose, the utility model provides bolt tenon groove combined joint structure for assembly type sinking well piece, which is used for fixedly connecting the first sinking well piece and the second sinking well piece; characterized in that: a convex part is arranged on the joint surface of the first sinking well piece; a concave part is arranged on the joint surface of the second sinking well piece; the convex part and the concave part form tenon groove cooperation;
[0007] A buffer is arranged on the convex part; a sealing structure is arranged on the joint surface;
[0008] The first sinking well piece and the second sinking well piece are fixedly connected through a bolt connecting structure or a steel plate connecting structure.
[0009] Preferably, the convex part and the concave part are located in the middle part of the joint surface.
[0010] Preferably, the convex part is located on one side of the joint surface; and the concave part is located on the other side of the joint surface.
[0011] Preferably, the buffer is a cork rubber plate.
[0012] Preferably, the sealing structure is a sealing groove arranged on the concave part, the sealing groove is located close to the outside of the sinking well piece; and a water-swelling sealing material is arranged in the sealing groove.
[0013] Preferably, a sealing groove is arranged in the sealing groove.
[0014] Preferably, the buffer is a cork rubber plate.
[0015] Preferably, the bolt connection structure comprises bolt holes penetrating the first well piece and the second well piece, and bolts penetrating the bolt holes; the bolt connection structure is arranged close to the inner side of the well piece.
[0016] Preferably, the steel plate connection structure comprises a steel plate with a plurality of through holes, and bolts penetrating the through holes; the first well piece and the second well piece are respectively provided with threaded holes matched with the bolts.
[0017] The present application has the following beneficial effects:
[0018] The present application has the following beneficial effects:
[0019] The present application has the following beneficial effects:
[0020] The present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 FIG. 1 is a structural schematic diagram of a well piece according to an embodiment of the present application;
[0022] Figure 2 FIG. 2 is a structural schematic diagram of a well piece according to another embodiment of the present application; Figure 1
[0023] Figure 3 Figure 1
[0024] Figure 4 FIG. 6 is a structural schematic diagram of a well piece according to another embodiment of the present application;
[0025] Figure 5 FIG. 7 is a structural schematic diagram of a well piece according to another embodiment of the present application;
[0026] Figure 6 Figure 5
[0027] In the figure: A first well piece, B second well piece, C joint surface, 11 convex part, 12 concave part, 21 bolt hole, 22 bolt, 3 sealing groove, 4 buffer, 51 steel plate, 52 bolt, 53 threaded hole. DETAILED DESCRIPTION
[0028] The concept, specific structure and technical effects of the utility model will be further described below in combination with the drawings, so as to fully understand the purpose, features and effects of the utility model.
[0029] Example 1:
[0030] As Figure 1 shown, the bolt and tenon groove combined joint structure of the assembled caisson well piece is used for connecting the first well piece A and the second well piece B, and the butt joint between the two is the joint surface C. The first well piece and the second well piece in the utility model are only relatively speaking, and are not particularly specified or limited.
[0031] In this embodiment, the convex part 11 is arranged on the joint surface C of the first well piece A; the concave part 12 is arranged on the joint surface C of the second well piece B; the convex part 11 and the concave part 12 are both located at the middle position of the joint surface C, forming a concave-convex type tenon groove cooperation, satisfying the ability of the joint surface to resist shear deformation under the action of external load, and at the same time, prolonging the seepage path of the underground water on the outside of the well piece along the joint surface into the well.
[0032] As Figure 2 shown, in this embodiment, the first well piece A and the second well piece B are fixedly connected through the bolt connection structure. The bolt connection structure includes the bolt hole 21 penetrating through the first well piece A and the second well piece B, and the bolt 22 arranged in the bolt hole 21, and the bolt 22 can be installed and fixed through the bolt hand hole. The bolt connection structure is located close to the inside of the well piece, providing a circumferential pull connection pre-tightening force, which can satisfy the ability of the joint surface to resist bending deformation under the action of external load.
[0033] As Figure 3 shown, further, the sealing structure can also be arranged on the joint surface C; the sealing structure is the sealing groove 3 opened on the convex part 11 or the concave part 12, and the sealing groove 3 is located close to the outside of the well piece; the sealing groove 3 is provided with water-swelling sealing material. When the underground water level is high, the sealing pad can also be arranged in the sealing groove 3, further optimizing the sealing effect.
[0034] As Figure 3 shown, further, in this embodiment, the convex part 11 is provided with the buffer 4; the buffer 4 can adopt a soft cork rubber plate, preventing the mutual extrusion or collision damage of the well pieces during assembly.
[0035] As Figure 4As shown, in other embodiments, the first well piece A and the second well piece B are fixedly connected by a steel plate connecting structure. Specifically, the steel plate connecting structure comprises a steel plate 51 having a plurality of through holes, and bolts 52 passing through the through holes; the first well piece A and the second well piece B are respectively provided with threaded holes 53 matched with the bolts 52, and the plurality of bolts 52 respectively pass through the corresponding threaded holes 53.
[0036] Especially, when the steel plate connecting structure is vertically arranged between adjacent well pieces of the fabricated caisson, sufficient tensile bearing capacity is provided for the tensile force of the lower well piece on the upper well piece caused by local voiding during the sinking process of the caisson. When the fabricated caisson is used as a pipe jacking working well, the vertical steel plate connecting structure also meets the ability of the joint surface to resist the bending deformation of the outer wall of the well piece under the action of the jacking force.
[0037] The bolt connecting structure or the steel plate connecting structure in the utility model is not limited to the longitudinal joint or the circumferential joint of the well piece. The skilled person in the art can flexibly apply it in different implementation environments.
[0038] Due to the above structure design, the connection between the two prefabricated well pieces is more firm through the cooperation of the bolts and the tenon and groove, and the bending and shearing stress conditions of the prefabricated well piece are met.
[0039] The utility model also provides a sealing groove and a sealing gasket at the joint, realizing good waterproof function.
[0040] The utility model also provides a buffer, effectively preventing the hard contact between the two well pieces.
[0041] Embodiment 2:
[0042] As shown in the drawings, Figure 5 , Figure 6 Another embodiment of the bolt and tenon groove combined joint structure of the prefabricated well piece of the utility model.
[0043] In this embodiment, the convex part 11 is located on one side of the joint surface C, and the concave part 12 is located on the other side of the joint surface C, and the concave part 11 and the convex part 12 form a Z-shaped tenon and groove cooperation, meeting the ability of the joint to resist shearing deformation under the action of external load.
[0044] The convex part 11 is provided with a buffer 4 to prevent mutual extrusion or collision damage during well piece assembly.
[0045] The preferred embodiments of the present application are described in detail above. It should be understood that those skilled in the art can make many modifications and changes without creative work according to the concept of the present application. Therefore, any technical solutions obtained by logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present application shall be within the protection scope defined by the claims.
Claims
1. A bolt-and-mortise joint structure for prefabricated caisson segments, used to fix and connect the first and second caisson segments; characterized in that: The first well piece is provided with a convex part on the joint surface; the second well piece is provided with a concave part on the joint surface; the convex part and the concave part form a tenon and groove cooperation; The convex part is provided with a buffer; the joint surface is provided with a sealing structure; the first well piece and the second well piece are fixedly connected through a bolt connection structure or a steel plate connection structure.
2. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1, wherein: The convex part and the concave part are located in the middle of the joint surface.
3. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1, wherein: The convex part is located on one side of the joint surface; the concave part is located on the other side of the joint surface.
4. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1, wherein: The buffer is a soft rubber plate.
5. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1 wherein: The sealing structure is a sealing groove opened on the concave part, which is located close to the outside of the well piece; a water-swelling sealing material is arranged in the sealing groove.
6. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 5 wherein: A sealing gasket is further arranged in the sealing groove.
7. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1 wherein: The buffer is a soft rubber plate.
8. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1 wherein: The bolt connection structure comprises a threaded hole penetrating through the first well piece and the second well piece, and a bolt penetrating in the threaded hole; the bolt connection structure is located close to the inside of the well piece.
9. The bolt and groove combination joint assembly for fabricated caisson segments as claimed in claim 1 wherein: The steel plate connection structure comprises a steel plate with a plurality of through holes, and a bolt penetrating in the through hole; the first well piece and the second well piece are respectively provided with a threaded hole matched with the bolt.