CN112878374B

CN112878374B - Suspension tunnel connecting member

Info

Publication number: CN112878374B
Application number: CN202110059680.4A
Authority: CN
Inventors: 吴林键; 马原飞; 刘明维; 袁希; 鞠学莉; 谢聪聪; 阿比尔的
Original assignee: Chongqing Jiaotong University
Current assignee: Chongqing Jiaotong University
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2022-09-20
Anticipated expiration: 2041-01-18
Also published as: CN112878374A

Abstract

The invention discloses a suspension tunnel connecting component, which comprises a connector head and a connector tail, wherein the connector head and the connector tail are butted with a front section of pipe joint and a rear section of pipe joint; the connector is connected end to end through three stressed components, namely a radial stressed component for bearing the radial load and the displacement generated by the suspension tunnel, an axial stressed component for bearing the axial load and the displacement, and an annular stressed component for bearing the annular load and rotating; the stressed member is connected with the spherical hinge spring through the connecting shaft, so that the relative freedom degree of the connector from head to tail is met while the damping and buffering performance of the stressed member is ensured. Compared with the traditional immersed tube connected tunnel joint, the suspension tunnel connecting member provided by the invention is provided with the stress members along the axial direction, the radial direction and the annular direction, meets the freedom degrees in six directions, and can adapt to the vibration and deformation of the suspension tunnel in a complex marine environment.

Description

Suspension tunnel connecting member

Technical Field

The invention relates to a suspension tunnel connection member.

Background

The suspended tunnel is also called an Archimedes bridge, is a large water-crossing traffic structure which supports the dead weight load and traffic load of the tunnel by buoyancy according to the Archimedes principle and is mainly used for solving the crossing problem of deep water areas and wide water areas. The floating tunnel has the advantages that the floating tunnel is not limited by span and water depth technically, can be built at the position with long span, deep water level and steep bank slope, and the manufacturing cost of the unit length of the floating tunnel is not increased along with the increase of the span. However, a systematic and complete theoretical system of the suspension tunnel is not formed in the world at present, and important core scientific problems such as the bearing capacity characteristic of a long-span suspension tunnel structure, the stability of a structure supporting system under severe sea conditions, the connection between pipe joints and the like and a series of engineering technical problems such as the establishment of a structural design standard system, the research and development of a high-toughness high-strength special structure new material, the construction process under deep water complicated conditions, the construction method, the equipment manufacturing, the risk assessment and the like need to be broken through. But the suspended tunnel has the advantages of the suspended tunnel and is expected to have very wide application prospect.

The connection between pipe joints is a very key link in a suspended tunnel and all underwater structures, at present, the research on the connection form of the underwater components at home and abroad mainly focuses on similar underwater structures such as immersed tube tunnels, shield tunnels and the like, and the research on the connection form between the pipe joints of the suspended tunnel is less. The pipe joint of the immersed tunnel comprises an intermediate joint, a shoreside joint and a final joint, wherein the intermediate joint is generally widely flexible, and the shoreside joint and the final joint are mainly rigid joints.

The suspension tunnel and the immersed tube tunnel belong to underwater structures, but the working environment of the suspension tunnel is greatly different from that of the immersed tube tunnel. The suspended tunnel is usually at a depth of tens of meters to tens of meters under water, and along with complex marine environments such as waves and ocean currents, complex relative motion can be generated between pipe joints under the action of environmental loads, so that the pipe joints are subjected to conditions such as dislocation and opening, and the stress of the pipe joints is influenced. Meanwhile, the whole suspension tunnel is of a slender structure, so that the longitudinal rigidity of the suspension tunnel is not too high, and a flexible connecting structure is used for ensuring that the pipe joints can deform within a certain allowable range. Although the immersed tube tunnel connection joint adopts flexible connection, the freedom degree and the deformation capability of the immersed tube tunnel connection joint cannot meet the requirements of a suspension tunnel.

Large offshore Floating Structures (VLFS) refer to those offshore Floating Structures with kilometers in scale, and because the VLFS has a huge scale, it is obviously impossible to manufacture the Structures integrally, so the VLFS is necessarily a modular structure, and each module needs to be connected through a specially designed connecting member. Researchers at home and abroad also conduct research on connecting components of the VLFS, and as the working environment of the VLFS is also influenced by waves and ocean currents, the displacement and the movement mode of the VLFS are similar to those of a suspension tunnel. However, the basic structural form, dimension and working environment are still different, so the form of the connecting member cannot directly meet the requirement of the suspension tunnel.

The invention also relates to research and invention of a connecting component of a suspension tunnel, but most of the connecting component is improved based on a immersed tube tunnel joint form, and the connecting component is not invented aiming at a special movement form of the suspension tunnel. Therefore, a new connecting mode which can be suitable for the connection between the pipe joints of the suspended tunnel is found, and the requirement for relative movement and stress of the pipe joints under the action of environmental load is very important.

Disclosure of Invention

The invention aims to provide a suspension tunnel connecting component with good energy dissipation and shock absorption performance and flexible deformation capacity so as to meet the requirements of vibration and relative displacement deformation generated among suspension tunnel pipe joints in a complex marine environment.

The technical scheme adopted for achieving the purpose of the invention is that the suspension tunnel connection component comprises a component head part and a component tail part.

The component prelude includes drum I and N arc I, and drum I is unanimous with the external diameter of arc I, and N arc I is connected to the one end of drum I, and N arc I is arranged along the circumference of drum I equidistant, and N is more than or equal to 2 natural numbers.

The tail part of the component comprises a cylinder II and N arc-shaped plates II, the outer diameters of the cylinder II and the arc-shaped plates II are consistent, the N arc-shaped plates II are connected to one end of the cylinder II, and the N arc-shaped plates II are arranged at equal intervals along the circumferential direction of the cylinder II.

N arc I imbeds in the space between N arc II respectively, has the clearance between arc I and the adjacent arc II, and there is the clearance arc I and drum II, and there is the clearance arc II and drum I.

Every all be provided with circumference atress spring between arc I and the adjacent arc II, circumference atress spring's both ends are connected to on arc I and the arc II respectively through the ball pivot.

Each arc-shaped plate I is connected with a cylinder II through a radial stress component, and the radial stress component comprises a connecting shaft I and a plurality of radial stress springs.

The inside of arc I is provided with cavity I that supplies connecting axle I and radial atress spring mounting, and cavity I is uncovered form towards one side of drum II.

One end of the connecting shaft I is fixed on the cylinder II, and the other end of the connecting shaft I extends into the cavity I. One end of the connecting shaft I, which extends into the cavity I, is connected with a plurality of radial stressed springs through spherical hinges, the radial stressed springs are connected to the inner wall of the cavity I through the spherical hinges, and the length direction of the radial stressed springs is consistent with the radial direction of the cylinder II.

Each arc-shaped plate II is connected with the cylinder I through an axial stress component, and the axial stress component comprises a connecting shaft II and a plurality of axial stress springs.

And a cavity II for mounting the connecting shaft II and the axial stressed spring is arranged in the arc-shaped plate II, and one side of the cavity II facing the cylinder I is open.

One end of the connecting shaft II is fixed on the cylinder I, and the other end of the connecting shaft II extends into the cavity II. One end of the connecting shaft II, which extends into the cavity II, is connected with a plurality of axial stress springs through spherical hinges, the axial stress springs are connected to the inner wall of the cavity II through the spherical hinges, and the length direction of the axial stress springs is consistent with the axial direction of the cylinder I.

Further, damping rubber is arranged on one side, facing the arc-shaped plate II, of the cylinder I, and damping rubber is arranged on one side, facing the cylinder II, of the arc-shaped plate I.

Damping rubber is arranged on one side, facing the arc-shaped plate I, of the cylinder II, and damping rubber is arranged on one side, facing the cylinder I, of the arc-shaped plate II.

Furthermore, each outer wall of the arc-shaped plate I is connected with a radial limiting key, and one end, far away from the arc-shaped plate I, of the radial limiting key is located on the periphery of the cylinder II.

When the cylinder I and the cylinder II are coaxial, a gap exists between the cylinder II and each radial limiting key.

Furthermore, the open end of the cavity I is in a closed-up shape, and a flange is arranged on the connecting shaft I and is close to the radial stress spring. When the connecting shaft I is moved towards the open end of the cavity I by an external force, the flange of the connecting shaft I is abutted against the inner wall of the open end of the cavity I to perform axial limiting.

The open end of the cavity II is in a closed-up shape, and a flange is arranged on the connecting shaft II and is close to the axial stress spring. When the connecting shaft II moves towards the open end of the cavity II under the action of an external force, the flange of the connecting shaft II is tightly propped against the inner wall of the open end of the cavity II to perform axial limiting.

Furthermore, the head part and the tail part of the member are both made of carbonized recycled aggregate high-performance concrete.

The invention has the beneficial effects that:

1. the stress components are arranged in the radial direction, the axial direction and the annular direction, so that the vibration and relative displacement deformation generated among the floating tunnel pipe joints in the complex marine environment can be met;

2. the suspension tunnel is connected by using the spherical hinge spring, six degrees of freedom between the front pipe joint and the rear pipe joint are released by the spherical hinge, and the suspension tunnel is ensured to have enough deformation capacity under the action of environmental load; the spherical hinge spring can enable the spring to be always in a two-way stressed state, so that the spring in each direction can change direction and can partially bear the load in other directions;

3. the invention adopts a semi-flexible semi-rigid connection concept, wherein the stressed members in three directions provide flexible connection, and the limiting key structure provides rigid connection for the connecting members, so that the relative movement and deformation between the pipe joints are ensured, and the pipe joints are also limited from generating overlarge displacement.

Drawings

FIG. 1 is a schematic view of the relationship between a connecting member and a pipe joint of a suspension tunnel;

FIG. 2 is a three-dimensional view of a suspended tunnel connection member;

FIG. 3 is a cross-sectional view of a suspended tunnel connection member;

FIG. 4 is an enlarged schematic view of a portion a of FIG. 3;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is an enlarged schematic view of FIG. 5 at b;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 3;

fig. 8 is an enlarged schematic view of fig. 7 at c.

In the figure: the component comprises a component head part 1, a cylinder I101, an arc-shaped plate I102, a component tail part 2, a cylinder II 201, an arc-shaped plate II 202, a circumferential stress spring 3, a connecting shaft I4, a radial stress spring 5, a connecting shaft II 6, an axial stress spring 7, damping rubber 8 and a radial limiting key 9.

Detailed Description

The present invention will be further described with reference to the following examples, but it should be understood that the scope of the subject matter described above is not limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.

Example 1:

the embodiment discloses a suspended tunnel connection member, which comprises a member head part 1 and a member tail part 2. Referring to fig. 1, a former head part 1 and a former tail part 2 are connected to two pipe sections, respectively, which are connected by the former head part 1 and the former tail part 2. The head part 1 and the tail part 2 of the member are both made of carbonized recycled aggregate high-performance concrete.

Referring to fig. 2, the component header 1 comprises a cylinder I101 and N arc plates I102, the outer diameters of the cylinder I101 and the arc plates I102 are identical, the N arc plates I102 are connected to one end of the cylinder I101, the N arc plates I102 are arranged at equal intervals along the circumferential direction of the cylinder I101, and N is a natural number greater than or equal to 2.

Referring to fig. 2, the component tail part 2 comprises a cylinder II 201 and N arc-shaped plates II 202, the outer diameters of the cylinder II 201 and the arc-shaped plates II 202 are identical, the N arc-shaped plates II 202 are connected to one end of the cylinder II 201, and the N arc-shaped plates II 202 are arranged at equal intervals along the circumferential direction of the cylinder II 201.

N arc I102 imbeds in the space between N arc II 202 respectively, forms the cockscomb structure interlock, has the clearance between arc I102 and the adjacent arc II 202, and there is the clearance arc I102 and drum II 201, and there is the clearance arc II 202 and drum I101, reserves the space that can take place relative displacement.

Damping rubber 8 is arranged on one side, facing the arc-shaped plate II 202, of the cylinder I101, and damping rubber 8 is arranged on one side, facing the cylinder II 201, of the arc-shaped plate I102. Damping rubber 8 is arranged on one side, facing the arc-shaped plate I102, of the cylinder II 201, and damping rubber 8 is arranged on one side, facing the cylinder I101, of the arc-shaped plate II 202.

Referring to fig. 3, a circumferential force-bearing spring 3 is arranged between each arc plate i 102 and the adjacent arc plate ii 202, and referring to fig. 4, two ends of the circumferential force-bearing spring 3 are connected to the arc plate i 102 and the arc plate ii 202 through spherical hinges respectively to form flexible connection.

Referring to fig. 5 or 6, each arc-shaped plate i 102 is connected with a cylinder ii 201 through a radial stress member, and the radial stress member comprises a connecting shaft i 4 and a plurality of radial stress springs 5.

The inside of arc I102 is provided with cavity I that supplies connecting axle I4 and radial atress spring 5 to install, and cavity I is uncovered form towards one side of drum II 201, should uncovered be the binding off form, is provided with the flange on the connecting axle I4, and this flange is close to radial atress spring 5.

One end of the connecting shaft I4 is fixed on the cylinder II 201, and the other end of the connecting shaft I extends into the cavity I. One end, extending into the cavity I, of the connecting shaft I4 is connected with the radial stress springs 5 through spherical hinges, the radial stress springs 5 are connected to the inner wall of the cavity I through the spherical hinges to form flexible connection, and the length direction of the radial stress springs 5 is consistent with the radial direction of the cylinder II 201. When the connecting shaft I4 is moved towards the open end of the cavity I by external force, the flange of the connecting shaft I4 is tightly propped against the inner wall of the open end of the cavity I to perform axial limiting.

Referring to fig. 7 or 8, each arc-shaped plate ii 202 is connected with the cylinder i 101 through an axial force-bearing component, and the axial force-bearing component comprises a connecting shaft ii 6 and a plurality of axial force-bearing springs 7.

The inside of arc II 202 is provided with cavity II that supplies connecting axle II 6 and axial atress spring 7 to install, and one side that cavity II faces drum I101 is uncovered form, and this uncovered end is the binding off form, is provided with the flange on connecting axle II 6, and this flange is close to axial atress spring 7.

One end of the connecting shaft II 6 is fixed on the cylinder I101, and the other end of the connecting shaft II extends into the cavity II. One end of the connecting shaft II 6 extending into the cavity II is connected with the axial stress springs 7 through spherical hinges, the axial stress springs 7 are connected to the inner wall of the cavity II through the spherical hinges to form flexible connection, and the length direction of the axial stress springs 7 is consistent with the axial direction of the cylinder I101. When the connecting shaft II 6 moves towards the open end of the cavity II under the action of external force, the flange of the connecting shaft II 6 is abutted against the inner wall of the open end of the cavity II to perform axial limiting.

Referring to fig. 6, the outer wall of each arc-shaped plate i 102 is connected with a radial limiting key 9, and one end of each radial limiting key 9, which is far away from the fixing plate, is located on the periphery of the cylinder ii 201. When the cylinder I101 and the cylinder II 201 are coaxial, a gap exists between the cylinder II 201 and each radial limiting key 9.

The radial limiting keys 9 all belong to the rigid part of the connecting component, when the structural displacement exceeds a limited value, the connecting component is converted into a rigid structure, and the limiting keys and the stressed component bear external load together.

Example 2:

the embodiment discloses a suspended tunnel connection member, which comprises a member head part 1 and a member tail part 2. Referring to fig. 1, a former head part 1 and a former tail part 2 are connected to two pipe sections, respectively, which are connected by the former head part 1 and the former tail part 2.

Referring to fig. 2, the component header 1 comprises a cylinder i 101 and N arc-shaped plates i 102, the outer diameters of the cylinder i 101 and the arc-shaped plates i 102 are the same, the N arc-shaped plates i 102 are connected to one end of the cylinder i 101, the N arc-shaped plates i 102 are arranged at equal intervals in the circumferential direction of the cylinder i 101, and N is a natural number greater than or equal to 2.

Referring to fig. 2, the component tail part 2 comprises a cylinder II 201 and N arc plates II 202, the outer diameters of the cylinder II 201 and the arc plates II 202 are consistent, the N arc plates II 202 are connected to one end of the cylinder II 201, and the N arc plates II 202 are arranged at equal intervals along the circumferential direction of the cylinder II 201.

N the curved plate I102 is embedded into the space between N curved plates II 202 respectively, a gap exists between the curved plate I102 and the adjacent curved plate II 202, a gap exists between the curved plate I102 and the cylinder II 201, and a gap exists between the curved plate II 202 and the cylinder I101.

Referring to fig. 3, a circumferential force-bearing spring 3 is arranged between each arc plate i 102 and the adjacent arc plate ii 202, and referring to fig. 4, two ends of the circumferential force-bearing spring 3 are respectively connected to the arc plate i 102 and the arc plate ii 202 through spherical hinges.

The inside of arc I102 is provided with cavity I that supplies connecting axle I4 and radial atress spring 5 to install, and one side that cavity I faced II 201 of drum is uncovered form.

One end of the connecting shaft I4 is fixed on the cylinder II 201, and the other end of the connecting shaft I extends into the cavity I. One end of the connecting shaft I4 extending into the cavity I is connected with a plurality of radial stress springs 5 through spherical hinges, the radial stress springs 5 are connected to the inner wall of the cavity I through the spherical hinges, and the length direction of the radial stress springs 5 is identical to the radial direction of the cylinder II 201.

Referring to fig. 7 or 8, each arc-shaped plate ii 202 is connected with the cylinder i 101 through an axial stress member, and the axial stress member comprises a connecting shaft ii 6 and a plurality of axial stress springs 7.

And a cavity II for mounting the connecting shaft II 6 and the axial stress spring 7 is arranged in the arc-shaped plate II 202, and one side of the cavity II facing the cylinder I101 is open.

One end of the connecting shaft II 6 is fixed on the cylinder I101, and the other end of the connecting shaft II extends into the cavity II. One end of the connecting shaft II 6 extending into the cavity II is connected with the axial stress springs 7 through spherical hinges, the axial stress springs 7 are connected to the inner wall of the cavity II through the spherical hinges, and the length direction of the axial stress springs 7 is consistent with the axial direction of the cylinder I101.

Example 3:

the main structure of this embodiment is the same as that of embodiment 2, further, a damping rubber 8 is arranged on one side of the cylinder i 101 facing the arc plate ii 202, and a damping rubber 8 is arranged on one side of the arc plate i 102 facing the cylinder ii 201.

Damping rubber 8 is arranged on one side, facing the arc-shaped plate I102, of the cylinder II 201, and damping rubber 8 is arranged on one side, facing the cylinder I101, of the arc-shaped plate II 202.

Example 4:

the main structure of this embodiment is the same as that of embodiment 3, and further, referring to fig. 6, a radial limiting key 9 is connected to the outer wall of each arc-shaped plate i 102, and one end of the radial limiting key 9, which is far away from the fixing plate, is located on the periphery of the cylinder ii 201.

When the cylinder I101 and the cylinder II 201 are coaxial, a gap exists between the cylinder II 201 and each radial limiting key 9.

Example 5:

the main structure of this embodiment is the same as embodiment 4, and further, referring to fig. 6, the open end of the cavity i is in a closed shape, and a flange is arranged on the connecting shaft i 4, and the flange is close to the radial force bearing spring 5. When the connecting shaft I4 is moved towards the open end of the cavity I by external force, the flange of the connecting shaft I4 is tightly propped against the inner wall of the open end of the cavity I to perform axial limiting.

Referring to fig. 8, the open end of the cavity ii is in a closed shape, and a flange is arranged on the connecting shaft ii 6 and is close to the axial force bearing spring 7. When the connecting shaft II 6 moves towards the open end of the cavity II under the action of an external force, the flange of the connecting shaft II 6 is tightly propped against the inner wall of the open end of the cavity II to perform axial limiting.

Example 6:

the main structure of this embodiment is the same as that of embodiment 5, and further, the materials of the member head part 1 and the member tail part 2 are both carbonized recycled aggregate high-performance concrete.

Claims

1. Suspension tunnel connecting elements, its characterized in that: comprises a component head part (1) and a component tail part (2);

the component head part (1) comprises a cylinder I (101) and N arc-shaped plates I (102), the outer diameters of the cylinder I (101) and the arc-shaped plates I (102) are consistent, the N arc-shaped plates I (102) are connected to one end of the cylinder I (101), the N arc-shaped plates I (102) are arranged at equal intervals along the circumferential direction of the cylinder I (101), and N is a natural number greater than or equal to 2;

the tail part (2) of the component comprises a cylinder II (201) and N arc-shaped plates II (202), the outer diameters of the cylinder II (201) and the arc-shaped plates II (202) are consistent, the N arc-shaped plates II (202) are connected to one end of the cylinder II (201), and the N arc-shaped plates II (202) are arranged at equal intervals along the circumferential direction of the cylinder II (201);

the N arc-shaped plates I (102) are respectively embedded into gaps among the N arc-shaped plates II (202), gaps exist between the arc-shaped plates I (102) and the adjacent arc-shaped plates II (202), gaps exist between the arc-shaped plates I (102) and the cylinder II (201), and gaps exist between the arc-shaped plates II (202) and the cylinder I (101);

a circumferential stress spring (3) is arranged between each arc-shaped plate I (102) and the adjacent arc-shaped plate II (202), and two ends of the circumferential stress spring (3) are respectively connected to the arc-shaped plate I (102) and the arc-shaped plate II (202) through spherical hinges;

each arc-shaped plate I (102) is connected with a cylinder II (201) through a radial stress component, and the radial stress component comprises a connecting shaft I (4) and a plurality of radial stress springs (5);

a cavity I for mounting a connecting shaft I (4) and a radial stress spring (5) is arranged in the arc-shaped plate I (102), and one side of the cavity I facing the cylinder II (201) is open;

one end of the connecting shaft I (4) is fixed on the cylinder II (201), and the other end of the connecting shaft I extends into the cavity I; one end, extending into the cavity I, of the connecting shaft I (4) is connected with a plurality of radial stress springs (5) through spherical hinges, the radial stress springs (5) are connected to the inner wall of the cavity I through the spherical hinges, and the length direction of the radial stress springs (5) is consistent with the radial direction of the cylinder II (201);

each arc-shaped plate II (202) is connected with the cylinder I (101) through an axial stress component, and the axial stress component comprises a connecting shaft II (6) and a plurality of axial stress springs (7);

a cavity II for mounting a connecting shaft II (6) and an axial stress spring (7) is arranged in the arc-shaped plate II (202), and one side of the cavity II facing the cylinder I (101) is open;

one end of the connecting shaft II (6) is fixed on the cylinder I (101), and the other end of the connecting shaft II extends into the cavity II; one end of the connecting shaft II (6) extending into the cavity II is connected with a plurality of axial stress springs (7) through spherical hinges, the axial stress springs (7) are connected to the inner wall of the cavity II through the spherical hinges, and the length direction of the axial stress springs (7) is consistent with the axial direction of the cylinder I (101).

2. The suspension tunnel connection member of claim 1, wherein: damping rubber (8) is arranged on one side, facing the arc-shaped plate II (202), of the cylinder I (101), and damping rubber (8) is arranged on one side, facing the cylinder II (201), of the arc-shaped plate I (102);

damping rubber (8) is arranged on one side, facing the arc-shaped plate I (102), of the cylinder II (201), and damping rubber (8) is arranged on one side, facing the cylinder I (101), of the arc-shaped plate II (202).

3. The suspension tunnel connection member of claim 1, wherein: the outer wall of each arc-shaped plate I (102) is connected with a radial limiting key (9), and one end, far away from the arc-shaped plate I (102), of each radial limiting key (9) is located on the periphery of the cylinder II (201);

when the cylinder I (101) and the cylinder II (201) are coaxial, a gap exists between the cylinder II (201) and each radial limiting key (9).

4. The suspension tunnel connection member according to claim 2 or 3, wherein: the open end of the cavity I is in a closed-up shape, a flange is arranged on the connecting shaft I (4), and the flange is close to the radial stress spring (5); when the connecting shaft I (4) moves towards the open end of the cavity I under the action of an external force, the flange of the connecting shaft I (4) is tightly propped against the inner wall of the open end of the cavity I to perform axial limiting;

the open end of the cavity II is in a closed-up shape, and a flange is arranged on the connecting shaft II (6) and is close to the axial stress spring (7); when the connecting shaft II (6) moves towards the open end of the cavity II under the action of external force, the flange of the connecting shaft II (6) is tightly propped against the inner wall of the open end of the cavity II to perform axial limiting.

5. The suspension tunnel connection member of claim 1, wherein: the head part (1) and the tail part (2) of the member are both made of carbonized recycled aggregate high-performance concrete.