CN114135312B - Double-connecting-rod assembled reinforcing structure - Google Patents

Abstract

The invention provides a double-connecting-rod assembled reinforcing structure, which comprises: the joint comprises a node part, an embedded part, a joint part, a sleeve and a rod piece; the node piece comprises a bottom plate with a kidney-shaped hole, a first part with round threaded holes at two ends, a second part with round threaded holes at two ends and a third part with round threaded holes at two ends; the embedded part comprises a top surface with a bolt hole and a cylinder with an internal thread corresponding to the bolt hole; one end of the joint piece is provided with two parallel fourth parts with round threaded holes, and the other end of the joint piece is provided with external threads; the sleeve is provided with an internal thread; one end of the rod piece is provided with an internal thread, and the other end of the rod piece is provided with an external thread. The double-connecting-rod assembled reinforcing structure can be used for actively reinforcing in a prestress applying mode, and overcomes the defects caused by the conventional passive reinforcement; meanwhile, the construction is simple; the components are manufactured in a standardized way, and the quality is reliable and replaceable; in addition, shield of the inner surface of the shield tunnel is less, and lining damage can be found conveniently and timely.

Description

Double-link assembled reinforced structure

technical field

The invention relates to a shield tunnel reinforcement structure, in particular to a dual-link assembly type reinforcement structure.

Background technique

At present, shield tunnels are widely used in rail transit, highways, railways, municipal pipelines and other projects. With the increase of service life, the diseases of shield tunnels gradually increase. Among the three main diseases of shield tunnels, excessive vertical and horizontal deformation will seriously affect the bearing capacity, service function and durability requirements of shield tunnel structures. Therefore, controlling the excessive vertical and horizontal deformation of shield tunnels is a key governance problem.

The treatment methods in the prior art are mainly to internally reinforce the lining structure, including steel plate reinforcement technology, fiber fabric reinforcement technology, and composite cavity reinforcement technology. The principles of these reinforcement technologies are to effectively connect the reinforcement structure and shield lining to form The composite structural system resists further deformation of the shield lining through the common force of the composite system. The reinforcement treatment of this composite system belongs to passive reinforcement, and the overall reinforcement effect is not strong.

Therefore, how to actively and reliably strengthen the shield tunnel to avoid excessive vertical and horizontal deformation is an urgent problem to be solved.

SUMMARY OF THE INVENTION

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a double-link assembly type reinforcement structure, which is used to solve the problem that the shield tunnel cannot be actively and reliably strengthened to avoid excessive longitudinal and lateral deformation in the prior art. question.

In order to achieve the above-mentioned purpose and other related purposes, the present invention provides a double-link assembly type reinforcing structure, including:

In an embodiment of the present invention, a node piece, a pre-embedded piece, a joint piece, a sleeve and a rod piece; the node piece includes a bottom plate with a waist-shaped hole, and a first part with circular threaded holes at both ends. , a second part with circular threaded holes at both ends and a third part with circular threaded holes at both ends; the embedded part includes a top surface with bolt holes, and a corresponding to the bolt holes with Cylinder with internal thread; the pre-embedded part is pre-embedded in the concrete segment when it is used for pouring the concrete segment, and is connected with the bottom plate of the node based on the bolt holes on the top surface; the joint One end of the piece is provided with two parallel fourth parts with circular threaded holes, and the other end is provided with an external thread; the sleeve is provided with an internal thread; one end of the rod is provided with an internal thread, and the other end is provided with an internal thread. There is an external thread; the joint piece is based on the fourth component, and is connected with the node piece by bolts; the end of the rod piece provided with the internal thread is connected with the joint piece; the rod piece is provided with an external thread. The other end is connected to the sleeve.

In an embodiment of the present invention, the first part of the node member is located in the middle of the base plate and is perpendicular to the base plate; the second part is perpendicular to the base plate; and is perpendicular to the first part; The third part is perpendicular to the base plate; and is perpendicular to the first part; the second part and the third part are arranged at both ends of the base plate based on the principle of force balance.

In an embodiment of the present invention, a scale is provided on the surface of the outer thread end of the rod, and the scale is used to indicate the pressure or tension in the rod.

In an embodiment of the present invention, when the sleeve rotates clockwise when connecting the rod, the tension in the rod is determined based on the scale; when the sleeve is connecting the rod, When the rod is rotated counterclockwise, the pressure in the rod is determined based on the scale.

In an embodiment of the present invention, based on the connection between the embedded part and the node part, the node part is fixed on the inner side of a concrete segment; based on the second part of the node part, The connection between the third component and the corresponding joint piece, the connection between the corresponding joint piece and the rod piece, and the connection between the rod piece and the sleeve, complete the two concrete segments of the same ring splicing.

In an embodiment of the present invention, based on the connection between the first part of the node piece and the corresponding joint piece, and the connection between the joint piece and the rod piece, the two concrete segments in the juxtaposed positions of different rings are completed. stitching.

In an embodiment of the present invention, when different concrete segments of the same ring are spliced into a complete ring, the node pieces inside the first concrete segment and the node pieces inside the last concrete segment in the same ring are based on the The angle formed by the centers of the rings is 90 degrees.

In an embodiment of the present invention, the end of the cylinder of the embedded part is set to a circular plane with a radius greater than the radius of the cylinder; the middle of the top surface of the embedded part is set to a radius greater than the radius of the circular plane. round hole.

In an embodiment of the present invention, a force sensor is arranged in the middle of the rod, and the force sensor is used to indicate the pressure or tension in the rod.

The present invention provides a shield tunnel based on a double-link assembly type reinforced structure, which is used to realize the above-mentioned double-link assembly type reinforced structure.

As mentioned above, the double-link assembled reinforcing structure of the present invention has the following beneficial effects:

(1) Active reinforcement is carried out by applying prestress to overcome the shortcomings of existing passive reinforcement.

(2) The construction is relatively simple; the components are standardized, and the quality is reliable and replaceable.

(3) The inner surface of the shield tunnel is less occluded, which is convenient for timely detection of lining diseases.

Description of drawings

FIG. 1 shows a connection structure diagram of the double-link assembled reinforcing structure in an embodiment of the present invention.

FIG. 2 is a physical view of a node member of the double-link assembly type reinforcing structure in an embodiment of the present invention.

FIG. 3 a is a schematic view of a circular threaded hole of a node member of the double-link assembly type reinforcing structure in an embodiment of the present invention.

FIG. 3b is a schematic diagram of a waist-shaped hole of a node member of the double-link assembled reinforcing structure in an embodiment of the present invention.

FIG. 4 is a schematic diagram of an embedded part of the double-link assembly type reinforcement structure in an embodiment of the present invention.

FIG. 5 is a schematic diagram showing the embedded parts of the double-link assembly type reinforcement structure in an embodiment of the present invention in a concrete segment.

FIG. 6 is a schematic view of a sleeve of the double-link assembled reinforcing structure in an embodiment of the present invention.

FIG. 7 is a physical view of the sleeve of the double-link assembled reinforcing structure of the present invention in an embodiment.

FIG. 8 is a schematic diagram of a joint of the double-link assembled reinforcing structure of the present invention in an embodiment.

FIG. 9 is a physical view of a joint piece of the double-link assembly type reinforcing structure in an embodiment of the present invention.

FIG. 10a is a schematic diagram showing a single-rod connection of the double-link assembled reinforcing structure in an embodiment of the present invention.

FIG. 10b is a schematic diagram showing a single rod connecting various components of the double-link assembled reinforcing structure in an embodiment of the present invention.

FIG. 11 is a schematic diagram showing the connection of the double-link assembly type reinforcement structure of the present invention in an embodiment of the double-link assembly.

FIG. 12 shows a physical view of the splicing of different concrete segments of the same ring in an embodiment of the double-link assembled reinforcing structure of the present invention.

FIG. 13 is a schematic diagram showing the connection between the nodes in different ring juxtaposed positions of the double-link assembly type reinforcement structure of the present invention in an embodiment.

FIG. 14 is a complete spliced view of the same ring of the double-link assembled reinforcing structure of the present invention in an embodiment.

FIG. 15 is a physical view of the embedded part of the double-link assembly type reinforcing structure in an embodiment of the present invention.

FIG. 16 is a schematic diagram of a rod member of the double-link assembly type reinforcing structure in an embodiment of the present invention.

FIG. 17 is a partial view of the assembled tunnel of the double-link assembled reinforcing structure of the present invention in an embodiment.

Component label description

1 node piece

2 Connectors

3 Sleeves

4 rods

5 Embedded parts

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other under the condition of no conflict.

It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and number of components in actual implementation. For dimension drawing, the type, quantity and proportion of each component can be changed at will in actual implementation, and the component layout may also be more complicated.

The double-link assembly type reinforcement structure of the present invention can be actively reinforced by applying prestress, so as to overcome the shortcomings brought by the existing passive reinforcement; at the same time, the construction is relatively simple; the components are standardized and manufactured, and the quality is reliable and replaceable; The inner surface of the tunnel is less occluded, which is convenient for timely detection of lining diseases.

As shown in FIG. 1 , in this embodiment, the connection structure diagram of the present invention; the double-link assembled reinforcing structure of the present invention includes: a node member 1, a joint member 2, a sleeve 3, a rod member 4 and a pre-embedded member Piece 5; the node piece includes a base plate with a waist-shaped hole, a first part with circular threaded holes at both ends, a second part with circular threaded holes at both ends, and a circular threaded hole at both ends The third part; the embedded part includes a top surface with bolt holes, and a cylinder with internal threads corresponding to the bolt holes; the embedded part is used for pouring concrete segments. In the concrete segment, based on the bolt holes on the top surface, it is connected with the bottom plate of the joint piece; one end of the joint piece is provided with two parallel fourth parts with circular threaded holes, and the other end is provided with two parallel fourth parts with circular threaded holes. An external thread is provided; the sleeve is provided with an internal thread; one end of the rod is provided with an internal thread, and the other end is provided with an external thread; connection; one end of the rod with internal threads is connected with the joint; the other end of the rod with external threads is connected with the sleeve.

Further specifically, the first part of the node member is located in the middle of the base plate and is perpendicular to the base plate; the second part is perpendicular to the base plate; and is perpendicular to the first part; the third part and perpendicular to the base plate; and perpendicular to the first part; the second part and the third part are arranged on both ends of the base plate based on the principle of force balance. As shown in FIG. 2 , in this embodiment, the actual diagram of the node element of the present invention is shown.

As shown in FIG. 3a, in this embodiment, a schematic diagram of the circular threaded holes of the node member of the present invention, the circular threaded holes at both ends of the first member, the second member and the third member on the node member are The circular threaded holes on one side of the first part as a reference are respectively connected with the corresponding joint pieces by bolts for the splicing of two concrete segments of the same ring; the circular threaded holes of the first part on the The joints are bolted for the splicing of two concrete segments at different ring juxtapositions.

As shown in Fig. 3b, in this embodiment, a schematic diagram of the waist-shaped hole of the node member of the present invention, the waist-shaped hole on the bottom plate of the node member is used to connect with the top surface of the embedded member by bolts; as shown in Fig. 4, In this embodiment, a schematic diagram of the embedded part of the present invention, the embedded part is pre-buried in the concrete segment when the concrete segment is poured, as shown in FIG. 5 , in this embodiment, the embedded part of the present invention is in In the schematic diagram of the concrete segment, the top surface of the embedded part is flush with the inner surface of the concrete segment; and the area of the bottom plate of the node is set to be larger, thereby reducing the adverse effect of the concentrated force of the node on the structure of the concrete segment.

More specifically, the first part, the second part and the third part on the node piece are all designed in a circular arc shape, which facilitates the rotation of the joint piece when connecting with the corresponding joint piece, thereby improving the installation efficiency.

More specifically, when there is no pre-embedded part in the concrete segment, the node part can be fixed on the inner surface of the concrete segment by passing through the waist-shaped hole on the base plate of the node part through expansion bolts or chemical bolts.

More specifically, a scale is provided on the surface of one end of the rod with the external thread, and the scale is used to indicate the pressure or tension in the rod. The material of the rod is steel pipe, which is beneficial to improve the compression stability of the rod.

More specifically, when the sleeve rotates clockwise when the rod is connected, the tension in the rod is determined based on the scale; when the sleeve is connected with the rod, the sleeve rotates counterclockwise , based on the scale, to determine the pressure within the rod.

For example, as shown in FIG. 6 , in this embodiment, a schematic diagram of the sleeve of the present invention is shown. The sleeve adopts a positive and negative buckle sleeve. When connecting the rod, it is rotated clockwise to apply tension to the rod; by counterclockwise rotation, it applies pressure to the rod, so as to achieve the effect of prestressing the rod. After prestressing, the double-link assembled reinforced structure can actively act on the shield lining and play an active role in reinforcement. In practical application, the outer side of the sleeve can also be provided with raised parts or roughened surface to facilitate twisting during construction. As shown in FIG. 7 , in this embodiment, the actual view of the sleeve of the present invention is shown.

Further specifically, based on the connection between the embedded part and the node part, the node part is fixed on the inner side of a concrete segment; as shown in FIG. 8 , in this embodiment, the joint part of the present invention is The schematic diagram is based on the connection between the second part and the third part of the node piece and the corresponding joint piece, the connection between the corresponding joint piece and the rod piece, and the rod piece and the rod piece. The connection of the sleeve completes the splicing of two concrete segments of the same ring, as shown in FIG.

As shown in Fig. 10a, in this embodiment, a schematic diagram of a single rod connection of the present invention, and as shown in Fig. 10b, in this embodiment, a schematic diagram of each component of a single rod connection of the present invention, after the single rod is connected, it is connected with the node The second part and the third part on the component are connected to form a connection schematic diagram of the double-link assembly, as shown in FIG. 11 , in this embodiment, the connection schematic diagram of the double-link assembly of the present invention. The splicing of different concrete segments of the same ring is completed through the assembling connection of the double connecting rods. As shown in FIG. 12 , in this embodiment, a physical view of the splicing of different concrete segments of the same ring.

More specifically, based on the connection of the first part of the node piece and the corresponding joint piece, and the connection of the joint piece and the rod piece, the splicing of two concrete segments in different ring juxtaposed positions is completed. As shown in FIG. 13 , in this embodiment, a schematic diagram of the connection between nodes in different ring juxtaposed positions of the present invention is shown.

More specifically, when different concrete segments of the same ring are spliced into a complete ring, the node pieces inside the first concrete segment and the node pieces inside the last concrete segment in the same ring are formed based on the center of the ring. The included angle is 90 degrees. As shown in FIG. 14 , in this embodiment, a complete splicing diagram of the same ring of the present invention is shown.

Further specifically, the end of the cylinder of the embedded part is set as a circular plane with a radius greater than the radius of the cylinder; the middle of the top surface of the embedded part is set as a circular hole with a radius greater than the radius of the circular plane; wherein , the circular plane is used to enhance the connection firmness of the embedded parts and the concrete; the circular holes set in the middle can reduce the weight of the embedded parts on the one hand, and can be used for positioning when pouring concrete segments on the other hand. As shown in Fig. 15, in this embodiment, the actual picture of the embedded part of the present invention.

More specifically, a force sensor is arranged in the middle of the rod, and the force sensor is used to indicate the pressure or tension in the rod. As shown in FIG. 16 , in this embodiment, a schematic diagram of the rod of the present invention is shown.

As shown in FIG. 17 , in this embodiment, a partial view of the assembled tunnel of the present invention is formed by assembling a plurality of segments to form a complete annular spliced segment, and when the node pieces of different segments are connected, set the The sleeve is connected to the rod, and the length of the rod is adjusted by rotating the sleeve in different directions, thereby increasing the pressure or tension on the rod; then multiple complete annular spliced segments are connected to the nodes through rods and joints On the parts, different ring segments are spliced and combined, and there is no sleeve between the different ring segments; through the continuous connection between the different ring segments, a tunnel of a certain length is gradually formed.

To sum up, the double-link assembly type reinforced structure of the present invention can be actively reinforced by applying prestress to overcome the shortcomings of the existing passive reinforcement; meanwhile, the construction is relatively simple; the components are standardized and manufactured, and the quality is reliable and high. It can be replaced; in addition, the inner surface of the shield tunnel is less occluded, which is convenient for timely detection of lining diseases. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims (10)

1. a double-link assembly type reinforcing structure, is characterized in that, comprises: Nodes, embedded parts, joints, sleeves and rods; The node piece includes a base plate with a waist-shaped hole, a first part with circular threaded holes at both ends, a second part with circular threaded holes at both ends, and a third part with circular threaded holes at both ends. part; The embedded part includes a top surface with bolt holes, and a cylinder with internal threads corresponding to the bolt holes; The pre-embedded part is pre-embedded in the concrete segment when it is used for pouring the concrete segment, and is connected with the bottom plate of the node part based on the bolt holes on the top surface; One end of the joint piece is provided with two parallel fourth parts with circular threaded holes, and the other end is provided with external threads; the sleeve is provided with an internal thread; One end of the rod is provided with an internal thread, and the other end is provided with an external thread; The joint piece is based on the fourth component, and is connected with the node piece by bolts; One end of the rod member provided with an internal thread is connected with the joint member; the other end of the rod member provided with an external thread is connected with the sleeve. 2. The reinforcing structure according to claim 1, characterized in that, comprising: The first part of the node piece is located in the middle of the bottom plate and is perpendicular to the bottom plate; the second part is perpendicular to the base plate; and is perpendicular to the first part; the third part is perpendicular to the base plate; and is perpendicular to the first part; The second part and the third part are arranged on both ends of the bottom plate based on the principle of force balance. 3. The reinforcing structure according to claim 1, characterized in that, comprising: A scale is provided on the surface of one end of the rod with the external thread, and the scale is used to indicate the magnitude of the pressure or tension in the rod. 4. The reinforcing structure according to claim 3, characterized in that, comprising: When the sleeve rotates clockwise when connecting the rod, based on the scale, the tension in the rod is determined; when the sleeve rotates counterclockwise when connecting the rod, based on the A scale to determine the pressure within the rod. 5. The reinforcing structure according to claim 2, characterized in that, comprising: Based on the connection between the embedded part and the node part, the node part is fixed on the inner side of a concrete segment; The connection of the second part and the third part based on the node piece with the corresponding joint piece, the connection of the corresponding joint piece and the rod piece, and the rod piece and the sleeve respectively The connection completes the splicing of two concrete segments of the same ring. 6. The reinforcing structure according to claim 5, characterized in that, comprising: Based on the connection between the first part of the node piece and the corresponding joint piece, and the connection between the joint piece and the rod piece, the splicing of two concrete segments in different ring juxtaposed positions is completed. 7. The reinforcement structure according to claim 5, characterized in that, comprising: When different concrete segments of the same ring are spliced into a complete ring, the included angle formed by the node piece inside the first concrete segment and the node piece inside the last concrete segment in the same ring is 90 based on the center of the ring. Spend. 8. The reinforcement structure of claim 1, comprising: The end of the cylinder of the embedded part is set as a circular plane with a radius greater than the radius of the cylinder; the middle of the top surface of the embedded part is set as a circular hole with a radius greater than the radius of the circular plane. 9. The reinforcement structure of claim 1, comprising: A force sensor is arranged in the middle of the rod, and the force sensor is used to indicate the pressure or tension in the rod. 10 . A shield tunnel based on a double-link assembly type reinforcement structure, characterized in that, the shield tunnel implementation includes the reinforcement structure according to any one of claims 1 to 9 .

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