Reinforced connecting component for outer sides of circumferential and longitudinal joints of concrete segments

Abstract

The utility model discloses a reinforced connecting part for the outer side of the circumferential and longitudinal joint of concrete segments, which is used for connecting two concrete segments and comprises a pre-embedded sleeve, the pre-embedded sleeve consists of a plate and an even number of not less than 2 cylinder bodies, and internal threads are arranged in the cylinder bodies; the embedded sleeve is embedded in the positions, close to the joint, of the two concrete pipe pieces, and the barrel bodies are embedded in the two concrete pipe pieces in a one-to-one correspondence mode. According to the utility model, the connection of the circumferential and longitudinal outer side joints of the concrete segments is considered, and the embedded sleeve is connected with the bolt through the sleeve and is matched with the sealing gasket and the pressing plate, so that the outer side joints of the two adjacent concrete segments can be tightly combined, and the strength and the rigidity of the joint of the two concrete segments are higher; therefore, the structural safety is guaranteed, and leakage is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe segment connectors, in particular to a reinforced connecting component used for the outer sides of circumferential and longitudinal joints of concrete pipe segments. Background Art

[0002] With the rapid construction of urban underground pipe networks, the pipe jacking method has been increasingly widely used. Before jacking, a jacking working well and a receiving well should be set up. At present, the jacking working well and the receiving well are mostly constructed by the caisson method, and most of them are cast on site, with a long construction period and easy to cause environmental pollution.

[0003] In view of the above shortcomings, prefabricated caissons have been used in jacking working wells and receiving wells. The prefabricated caissons have the advantages of digitalization, factory production, and high degree of prefabricated construction. However, the prefabricated caissons are based on concrete segments as basic units, and the connection between adjacent segments will inevitably produce circumferential and longitudinal joints. Since the outer side of the prefabricated caisson needs to withstand tension both in the sinking construction stage and in the pipeline jacking construction stage, in order to solve the strength, rigidity and impermeability problems of the joints of the segments under the action of external forces, in current actual projects, the usual practice is to first use bolts to connect the inner side of the segments, and then weld the adjacent embedded steel plates on the outer side of the segment joints into a whole at the construction site, but the quality of the weld construction is difficult to control and is prone to leakage.

[0004] For example, Chinese patent document 202211525770.9 discloses a connection structure and construction method for concrete pipe segments. Although this invention solves the leakage problem of the circumferential inner and outer joints of the pipe segments, it cannot take into account the longitudinal joints. The longitudinal joints of the pipe segments are still prone to leakage.

[0005] Therefore, how to take into account the circumferential and longitudinal joints of the concrete segments and ensure the overall structural safety and anti-seepage performance of the segments has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] In view of the above-mentioned defects of the prior art, the utility model provides a reinforcing connection component for the outer side of the circumferential and longitudinal joints of concrete segments, the purpose of which is to improve the strength and rigidity of the outer side of the concrete segment joints and improve the leakage at the concrete segment joints, thereby ensuring the overall structural safety and anti-seepage performance of the segments.

[0007] In order to achieve the above technical purpose, the utility model provides a reinforced connection component for the outer side of the circumferential and longitudinal joints of a concrete segment, which is used to connect two concrete segments, and includes a pre-embedded sleeve, which is composed of a plate and an even number of cylinders not less than 2, and an internal thread is provided in the cylinder;

[0008] The embedded sleeve is embedded in the two concrete segments near the outer joint, and the cylinder is embedded in the two concrete segments one by one.

[0009] The top of the embedded sleeve is provided with a sealing gasket and a pressing plate in sequence from bottom to top, and the sealing gasket and the pressing plate are respectively provided with bolt holes at positions corresponding to the cylinder body;

[0010] Each of the cylinders is threadedly connected with a bolt, and the head of each of the bolts extends out of the corresponding bolt hole and is located on the top of the pressure plate.

[0011] Preferably, a washer is disposed between the head of each bolt and the pressure plate.

[0012] Preferably, the diameter of the bolt hole on the pressing plate is 1-1.5 mm larger than the diameter of the bolt.

[0013] Preferably, the embedded sleeve is made of steel.

[0014] Beneficial effects of the utility model:

[0015] Due to the above structural design, the utility model takes into account the connection of the circumferential and longitudinal outer seams of the concrete pipe segments. The embedded sleeve can tightly combine the outer seams of two adjacent concrete pipe segments through the cylinder connecting bolts and in conjunction with the sealing gasket and the pressure plate, so that the strength and rigidity of the joints of the two concrete pipe segments are higher, thereby ensuring the structural safety and preventing leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model before the bolts are installed, with the gasket and the cap installed;

[0018] Figure 3 It is a schematic diagram of the planar structure of the embedded sleeve in the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-section structure at aa in the middle;

[0020] Figure 5 for Figure 3 Schematic diagram of the cross-section structure at bb in the middle;

[0021] Figure 6 This is a schematic diagram of the structure of the utility model after installation and use;

[0022] Figure 7 for Figure 6 A schematic diagram of the structure from a side view;

[0023] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at cc in the middle.

[0024] In the figure: 1 embedded sleeve, 2 sealing gasket, 3 pressure plate, 4 washers, 5 bolts, 6 gaskets, 7 caps, 8 concrete segments. DETAILED DESCRIPTION

[0025] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention.

[0026] Example:

[0027] like Figure 1-Figure 8 As shown, a reinforcing connection component used for the outer side of the circumferential and longitudinal joints of a concrete segment is used to connect two concrete segments 8, including an embedded sleeve 1, which is composed of a plate and an even number of cylinders of no less than 2, and an internal thread is provided in the cylinder; the embedded sleeve 1 is embedded in the interior of the two concrete segments 8 near the outer joints, and the cylinders are respectively embedded in the two concrete segments 8 one by one; a sealing gasket 2 and a pressing plate 3 are sequentially arranged on the top of the embedded sleeve 1 from bottom to top, and bolt holes are respectively provided on the sealing gasket 2 and the pressing plate 3 at positions corresponding to the cylinders; each cylinder is respectively threadedly connected with a bolt 5, and the head of each bolt 5 extends out of a corresponding bolt hole and is located on the top of the pressing plate 3.

[0028] The main innovation of the utility model is that the embedded sleeve 1 tightly connects the outer seams of the two concrete segments 8 through the cylinder connecting bolts, so that the strength and rigidity of the seams of the two concrete segments 8 are higher and it is not easy to leak.

[0029] In this embodiment, the embedded sleeve 1 is composed of a steel plate and an even number of cylinders not less than 2.

[0030] The sealing gasket 2 can be made of materials such as rubber and silicone, which can effectively adjust the fit between the contact surface of the embedded sleeve 1 and the pressing plate 3 and improve the waterproof performance.

[0031] More specifically, the center spacing of the bolt holes opened on the pressure plate 3 is the same as the center spacing of the upper threaded holes of the embedded sleeve 1. In order to prevent the manufacturing deviation from affecting the installation, the inner diameter of the bolt hole is increased by 1-1.5mm compared with the diameter of the bolt 5. Its main function is to connect the joints of adjacent concrete segments 8 and ensure that the structure at the outer joints of the concrete segments 8 is not damaged due to tension.

[0032] Furthermore, a washer 4 is provided between the head of each bolt 5 and the pressure plate 3. The washer 4 is made of a circular steel plate, and its size and opening are matched with the bolt 5. It is mainly used to protect the surface of the pressed plate 3 from being scratched by the bolt 5 and to disperse the pressure of the bolt 5 on the pressure plate 3.

[0033] In order to ensure the structural strength, high-strength bolts are used for bolts 5, and their specifications and mechanical properties should be consistent with the installation bolts used on the inner side of the joints of the concrete pipe segments 8. Their main function is to connect the embedded sleeve 1 and the pressure plate 3, and to withstand tension, compression and shear forces.

[0034] In some embodiments, the diameter of the bolt hole on the pressure plate 3 is 1-1.5 mm larger than the diameter of the bolt 5 , and its main function is to connect the joints of adjacent concrete segments 8 to ensure that the structure at the outer joints of the concrete segments 8 is not damaged due to tension.

[0035] like Figure 2 As shown, in the process of supporting the formwork, the gasket 6 and the cap 7 can be used to seal the threaded hole of the embedded sleeve 1, which can not only ensure that concrete is not poured into the threaded hole of the embedded sleeve 1, but also can be disassembled and reused to reduce the cost; wherein, the gasket 6 is made of polyethylene and other materials; the cap 7 can be made of rubber, silicone and other materials, and has its own thread;

[0036] The installation and use steps of this utility model are as follows:

[0037] 1. Prefabricate the embedded sleeve 1, gasket 6 and cap 7, open the threaded holes according to the specifications of the connecting bolts on the inner side of the concrete segment 8, assemble the cap 7, gasket 6 and embedded sleeve 1 as a whole before supporting the formwork, and then fix them to the outer joint of the concrete segment 8 mold and fix the embedded sleeve 1 to the steel cage;

[0038] 2. After the concrete segments 8 are connected into a ring by inner bolts, the gaskets 6 and caps 7 are removed, and the sealing gaskets 2 and the pressing plates 3 are prefabricated according to the outer grooves of the concrete segments 8 after assembly, and holes are opened according to the positions of the threaded holes of the embedded sleeves 1, and the sealing gaskets 2 and the pressing plates 3 are placed in the grooves in sequence;

[0039] 3. Place the washer 4 at the opening and screw in the bolt 5, check the connection to ensure that the outer seams of adjacent concrete segments 8 are tightly connected;

[0040] 4. Assemble the circumferentially connected concrete segments 8 and repeat steps 2 and 3.

[0041] In summary, the utility model adopts reinforced connection components to promote the development of prefabricated caisson construction while ensuring the overall structural safety and anti-seepage performance of the prefabricated caisson.

[0042] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A reinforced connecting component used for the outer side of the circumferential and longitudinal joints of concrete segments, used to connect two concrete segments, including an embedded sleeve, characterized in that: The embedded sleeve is composed of a plate and an even number of cylinders not less than 2, and the cylinders are provided with internal threads; The embedded sleeve is embedded in the two concrete segments near the joint, and the cylinder is embedded in the two concrete segments one by one. The top of the embedded sleeve is provided with a sealing gasket and a pressing plate in sequence from bottom to top, and the sealing gasket and the pressing plate are respectively provided with bolt holes at positions corresponding to the cylinder body; Each of the cylinders is threadedly connected with a bolt, and the head of each of the bolts extends out of the corresponding bolt hole and is located on the top of the pressure plate.

2. The reinforcing connection component for the outer side of the circumferential and longitudinal joints of concrete segments according to claim 1, characterized in that: A washer is respectively arranged between the head of each bolt and the pressing plate.

3. The reinforcing connection component for the outer side of the circumferential and longitudinal joints of concrete segments according to claim 2, characterized in that: The diameter of the bolt hole on the pressing plate is 1-1.5 mm larger than the diameter of the bolt.

4. The reinforcing connection component for the outer side of the circumferential and longitudinal joints of concrete segments according to any one of claims 1 to 3, characterized in that: The embedded sleeve is made of steel material.

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