CN216950373U

CN216950373U - Novel shield constructs and originates and receive base

Info

Publication number: CN216950373U
Application number: CN202220184266.6U
Authority: CN
Inventors: 霍九坤; 余守龙; 李忠超; 陈有为; 黄栋; 杨成焰; 邹永亮; 王伟华
Original assignee: Wuhan Municipal Construction Group Co Ltd
Current assignee: Wuhan Municipal Construction Group Co Ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-07-12
Anticipated expiration: 2032-01-24

Abstract

The utility model discloses a novel shield launching and receiving base, which comprises two groups of base units which are arranged oppositely and obliquely, wherein the base units are arranged at the bottom of a main structure of a launching or receiving well, and the outer side of each base unit is connected with the side part of the main structure of the launching or receiving well through a plurality of guiding fixed support frames which are arranged at intervals; the shield machine runs between the two base units; the top of the base unit is provided with a guide rail, the guide rail is matched with the outer wall of the shield tunneling machine, and the outer wall of the shield tunneling machine is in contact with the guide rail. The utility model has the beneficial effects that: the device meets the functional requirements of shield launching and receiving on the base by combining the section steel and the steel plate; each part is mostly current common structure, circulated use, connects simply between each part, has solved current base material consumption big, weight is big, processing and installation work load is big, the problem that the efficiency of construction is low.

Description

Novel shield constructs and originates and receive base

Technical Field

The utility model relates to the technical field of shield tunneling, in particular to a novel shield launching and receiving base.

Background

In order to solve the problems of urban traffic jam, air pollution and the like, subway construction of various major cities in China is carried out fiercely. The shield method tunnel construction has the outstanding characteristics of small influence on the surrounding environment, high automation degree, high quality and efficiency of construction, safety, environmental protection and the like, and particularly has obvious superiority under the conditions of poor stratum conditions, complex environmental conditions, high underground water level and the like. The subway interval tunnel is constructed by adopting a shield method, so that the construction efficiency can be effectively improved, the influence on the surrounding environment is reduced, and the influence on urban operation is reduced, and the shield method is safe and environment-friendly, so that the shield method is more and more favored in the interval tunnel construction. One of the key processes in the shield construction process is shield originating and receiving.

At present, a shield launching and receiving base mainly comprises a bottom frame, inclined struts, cross struts and the like which are composed of channel steel, and the processing and manufacturing workload is large; the integral weight is large, sectional hoisting installation and dismantling are needed, the hoisting risk is high, the construction efficiency is low, and the construction period is long; when the bottom plate of the opening is constructed, a steel plate needs to be pre-embedded in advance for fixing a base at the later stage, so that the working procedure is more complicated; the single base consumes a large amount of steel and has high construction cost. Therefore, there is a need for improvements in the prior art.

Disclosure of Invention

The utility model aims to provide a novel shield launching and receiving base which is simple in structure and high in construction efficiency aiming at the defects of the prior art.

The beneficial effects of the utility model are as follows: a novel shield launching and receiving base comprises two groups of base units which are oppositely and obliquely arranged, wherein the base units are arranged at the bottom of a main body structure of a launching or receiving well, and the outer side of each base unit is connected with the side part of the main body structure of the launching or receiving well through a plurality of guiding fixed support frames which are arranged at intervals; the shield machine runs between the two base units; the top of the base unit is provided with a guide rail, the guide rail is matched with the outer wall of the shield tunneling machine, and the outer wall of the shield tunneling machine is in contact with the guide rail.

According to the scheme, each base unit is arranged on the corresponding substrate, and the substrate is horizontally arranged at the bottom of the main structure of the starting or receiving well; the end parts of the base plates of the two base units are spliced and reinforced by a plurality of reinforcing batten plates arranged at intervals.

According to the scheme, the base unit comprises a top plate, a section steel main body and side plates, the section steel main body is obliquely arranged, the top of the section steel main body is fixed with the top plate, and the guide rail is installed on the top plate through a cushion block; the bottom of the profile steel main body is contacted with the base plate, the outer side of the profile steel main body is connected with the side plate, and the bottom of the side plate is contacted with the base plate; and two ends of the H-shaped steel are plugged by using sealing plates.

According to the scheme, the section steel main body is made of H-shaped steel, the bottom of an inner flange plate of the H-shaped steel is in contact with the substrate, an outer flange plate of the H-shaped steel is connected with the side plate, the side plate is arranged on the inner side of an outer flange plate of the H-shaped steel, the top of the side plate is abutted against a web plate of the H-shaped steel, and the bottom of the side plate is connected with the substrate; the top plate is provided with a cushion block, and the guide rail is fixed on the cushion block through a plurality of pressing plates.

According to the scheme, the included angle alpha between the base unit and the substrate is 55-65 degrees.

According to the scheme, the guide fixing support frame comprises a section steel member and a back plate, one end of the section steel member is fixed with the outer side face of the base unit, the other end of the section steel member is connected with the back plate, and the back plate is fixed on the side portion of the main body structure of the originating or receiving well.

According to the scheme, the base unit is provided with the inner triangular rib plate, the oblique edge section of the inner triangular rib plate is abutted to the outer portion of the inner flange plate of the H-shaped steel, the horizontal section of the inner triangular rib plate is connected with the base plate, and the top of the inner triangular rib plate is connected with the top plate and/or the inner flange plate of the H-shaped steel.

According to the scheme, the base unit is further provided with the outer triangular rib plates, the bevel edge sections of the outer triangular rib plates are of a stepped structure and are abutted to the outer flange plates and the side plates of the H-shaped steel, the horizontal sections at the tops of the outer triangular rib plates are connected with the lower surfaces of the connecting plates, and one sides of the connecting plates are connected with the tops of the outer flange plates of the H-shaped steel.

The utility model has the beneficial effects that: 1. the device meets the functional requirements of shield launching and receiving on the base by combining the section steel and the steel plate; each part is mostly current common structure, circulated use, connects simply between each part, has solved current base material consumption big, weight is big, processing and installation work load is big, the problem that the efficiency of construction is low. 2. The device mainly adopts steel sheet and two H shaped steel combination preparation to accomplish, simple structure, processing simple manufacture. 3. The device simple structure, overall weight is light, and the installation is demolishd simply, reduction of erection time. 4. Fixing devices such as steel plates do not need to be pre-embedded in advance on the bottom plate during installation of the device, and the process is simple. 5. The device has the advantages of less total use amount, short reinforcing period and low construction cost. 6. The device is light in overall weight, more economical equipment can be selected according to the type of the hoisting equipment on the well, and meanwhile, the risk of hoisting heavy objects is reduced. 7. And the height difference between the opening and the bottom plate is reduced by backfilling concrete at the opening, so that the construction risk during starting and receiving is reduced.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a top view of the present embodiment.

FIG. 3 is a schematic diagram of the connection between the main structure of the originating or receiving well according to the present embodiment.

Figure 4 is a schematic view of the connection of a single base unit to the main structure of a originating or receiving well.

Wherein: 1. a substrate; 2. a section steel main body; 3. a top plate; 4. a side plate; 5. inner triangular rib plates; 6. an outer triangular rib plate; 7. A connecting plate; 8. a guide rail; 9. cushion blocks; 10. a profiled steel member; 11. a back plate; 12. pressing a plate; 13. reinforcing the batten plate; 14. an originating or receiving well body structure; 15. a square rib plate.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

The novel shield launching and receiving base shown in fig. 1 to 4 comprises two sets of base units which are arranged oppositely and obliquely, wherein the base units are arranged at the bottom of a launching or receiving well main body structure 14, and the outer sides of the base units are connected with the side part of the launching or receiving well main body structure 14 through a plurality of guiding fixed support frames which are arranged at intervals; the shield machine operates between two base units.

Preferably, a guide rail 8 is installed at the top of the base unit, the guide rail 8 is matched with the outer wall of the shield tunneling machine, and the outer wall of the shield tunneling machine is in contact with the guide rail 8. In this embodiment, the guide rail 8 is a steel rail.

Preferably, each base unit is provided on a corresponding substrate 1, the substrate 1 being horizontally disposed at the bottom of the originating or receiving well body structure 14; the end parts of the base plates 1 of the two base units are spliced and reinforced by a plurality of reinforcing batten plates 13 arranged at intervals. In this embodiment, the base plate 1 and the reinforcing batten plate 13 are steel plates, and both of them have a thickness of 30 mm; the interval of the reinforcing gusset plate 13 is 400 mm.

Preferably, the base unit comprises a top plate 3, a section steel main body 2 and side plates 4, the section steel main body 2 is obliquely arranged, the top of the section steel main body 2 is fixed with the top plate 3, and the guide rail 8 is installed on the top plate 3 through a cushion block 9; the bottom of the section steel main body 2 is in contact with the base plate 1, the outer side of the section steel main body 2 is connected with the side plate 4, and the bottom of the side plate 4 is in contact with the base plate 1; and two ends of the H-shaped steel are plugged by using sealing plates.

In the embodiment, the top plate 3 and the side plate 4 are both steel plates, and the thicknesses of the two are both 30 mm; shaped steel main part 2 adopts the model to be Q235B, 400X 400 mm's H shaped steel preparation, specifically, H shaped steel's interior flange board bottom and base plate 1 contact, and H shaped steel's outside flange board links to each other with curb plate 4, and the inboard of H shaped steel outer flange board is located to curb plate 4, and the top of curb plate 4 and H shaped steel's web butt, and the bottom of curb plate 4 links to each other with base plate 1. Preferably, a plurality of square rib plates 15 for reinforcement are arranged at intervals along the length direction of the H-shaped steel, the square rib plates 15 are located on two sides of a web plate of the H-shaped steel, and three edge portions of each square rib plate are connected with an inner flange plate, an outer flange plate and the web plate of the H-shaped steel respectively.

The top plate 3 is provided with a cushion block 9, and the guide rail 8 is fixed on the cushion block 9 through a plurality of pressing plates 12.

In the present invention, the included angle α between the base unit and the substrate 1 is 55 ° to 65 °, preferably 60 °.

Preferably, the guide fixing support frame comprises a section steel member 10 and a back plate 11, one end of the section steel member 10 is fixed to the outer side surface of the base unit, the other end of the section steel member 10 is connected to the back plate 11, and the back plate 11 is fixed to the side of the originating or receiving well main body structure 14; the section steel member 10 is made of H-shaped steel or i-shaped steel. In this example, the section steel member 10 was made of H-shaped steel having a size of 200X 200mm and Q235B.

Preferably, the base unit is provided with an inner triangular rib plate 5, the oblique edge section of the inner triangular rib plate 5 is abutted to the outer portion of the inner flange plate of the H-shaped steel, the horizontal section of the inner triangular rib plate 5 is connected with the base plate 1, and the top of the inner triangular rib plate 5 is connected with the top plate 3 and/or the inner flange plate of the H-shaped steel.

Preferably, the base unit still is equipped with outer triangular rib plate 6, the hypotenuse section of outer triangular rib plate 6 is stair structure, with the outer flange board and the 4 butts of curb plate of H shaped steel, the horizontal segment at outer triangular rib plate 6 top links to each other with the lower surface of connecting plate 7, and one side of connecting plate 7 links to each other with the outer flange board top of H shaped steel.

In the embodiment, the thicknesses of the inner triangular rib plates 5 and the outer triangular rib plates 6 are both 30 mm; the connecting plate 7 is a steel plate with the thickness of 20 mm.

In this embodiment, a connecting line from a contact point of the guide rail 8 and the outer wall of the shield tunneling machine to the center of a cross-sectional circle where the contact point is located, a thickness bisector of the base unit, a perpendicular bisector of the top plate 3, a middle plane of the guide rail 8, and a center line of the guide rail 8 are collinear.

The utility model can be used as a shield receiving base and a shield starting base. The concrete construction process of the utility model is as follows:

step one, respectively manufacturing each part of the novel shield launching and receiving base, which comprises a base unit, a guide rail 8, a guide fixing support frame and the like, wherein the base plate 1 is manufactured by adopting a steel plate with the thickness of Q235 being 30mm, the two base plates 1 are connected by adopting a reinforcing batten plate 13 with the thickness of Q235 being 30mm and 200 multiplied by 200mm in a welding mode, and the distance is 400 mm. The section steel main body 2 of the base unit adopts Q235B type 400X 400mm H-shaped steel, a steel plate with the thickness of Q235 and the thickness of 30mm is processed into BH which is 193.5X 358mm square rib plates 15, H-shaped steel flange plates are reinforced on the left side and the right side at intervals of 500mm, meanwhile, the H-shaped steel flanges are connected into a whole by adopting the steel plate with the thickness of 30mm, and the two ends of the H-shaped steel are plugged by adopting the steel plates with the thickness of 30mm as sealing plates.

Step two, early preparation: according to the installation of equipment for power consumption, water consumption, channels, drainage, illumination and the like for the conventional shield launching and receiving construction, the smoothness of construction machines and construction material entering roads is ensured, and materials, equipment and machines required by the launching and receiving base are prepared to meet specific construction requirements.

Step three, backfilling plain concrete at the hole: and according to the designed diameter of the shield machine, backfilling the concrete with the same grade on the bottom plate to different height distances below the bottom edge of the tunnel portal.

Step four, fixing the base unit: the base unit and the substrate 1 are fixedly connected on the substrate 1 in a welding mode with an included angle of 55-65 degrees, the H-shaped steel inner flange plate is directly connected with the substrate 1 in a welding mode, and the H-shaped steel outer flange plate is connected with the substrate 1 in a welding mode after being welded and lengthened through the side plates 4.

Step five, reinforcing the base unit: after the base unit is welded and connected with the base plate 1, the inner side and the outer side are reinforced by adopting inner and outer triangular ribbed plates 6 made of Q235 steel plates with the thickness of 30mm at intervals of 500 mm.

Step six, installing a guide rail 8: the base unit is provided with a cushion block 9 for reinforcement, a guide rail 8 with standard heavy rail specification DB43kg is arranged on the upper inclined surface of the base unit after the reinforcement, the guide rail 8 is connected with a backing plate in a welding way, and a 7-shaped plate (namely a pressure plate 12) is arranged for fixing the guide rail 8.

Step seven, guiding and fixing the support frame: and the horizontal spacing of the base unit is 2000mm, is arranged outside the base unit, is connected and fixed with the side part of the main body structure 14 of the starting or receiving well, and is used for fixing and limiting the displacement of the base unit.

In the construction engineering, after the two base units are manufactured, the corresponding substrates 1 at the bottoms of the two base units are connected and fixed to form a whole, so that the stability of the whole is enhanced; meanwhile, the outer side of the base unit is connected with the side part of the starting and receiving main body structure by adopting a guide fixing support frame to form support limiting, so that the whole base is prevented from displacing in the using process, and the starting and receiving postures of the shield are ensured.

Although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements, and the like, which are within the spirit and principle of the present invention, may be made to the technical solutions and parameters described in the foregoing embodiments or to some of the technical features of the embodiments without departing from the spirit and principle of the present invention.

Claims

1. A novel shield launching and receiving base is characterized by comprising two groups of base units which are oppositely and obliquely arranged, wherein the base units are arranged at the bottom of a main body structure of a launching or receiving well, and the outer sides of the base units are connected with the side part of the main body structure of the launching or receiving well through a plurality of guiding fixed support frames which are arranged at intervals; the shield machine runs between the two base units; the top of the base unit is provided with a guide rail, the guide rail is matched with the outer wall of the shield tunneling machine, and the outer wall of the shield tunneling machine is in contact with the guide rail.

2. The novel shield originating and receiving pedestal of claim 1 wherein each pedestal unit is disposed on a corresponding base plate disposed horizontally at the bottom of the originating or receiving well body structure; the end parts of the base plates of the two base units are spliced and reinforced by a plurality of reinforcing batten plates arranged at intervals.

3. The novel shield launching and receiving base of claim 2, wherein the base unit comprises a top plate, a section steel body and side plates, the section steel body is obliquely arranged, the top of the section steel body is fixed with the top plate, and the guide rail is installed on the top plate through a cushion block; the bottom of the section steel main body is in contact with the base plate, the outer side of the section steel main body is connected with the side plate, and the bottom of the side plate is in contact with the base plate; and two ends of the H-shaped steel are plugged by sealing plates.

4. The novel shield launching and receiving foundation of claim 3, wherein the steel body is made of H-shaped steel, the bottom of the inner flange plate of the H-shaped steel is in contact with the base plate, the outer flange plate of the H-shaped steel is connected with the side plate, the side plate is arranged on the inner side of the outer flange plate of the H-shaped steel, the top of the side plate is abutted against the web plate of the H-shaped steel, and the bottom of the side plate is connected with the base plate; the top plate is provided with a cushion block, and the guide rail is fixed on the cushion block through a plurality of pressing plates.

5. The novel shield originating and receiving pedestal of claim 2 wherein the angle α between the pedestal unit and the base plate is 55 ° to 65 °.

6. The novel shield launching and receiving foundation of claim 1, wherein the guide fixing support frame comprises a steel section member and a back plate, one end of the steel section member is fixed to the outer side of the foundation unit, the other end of the steel section member is connected to the back plate, and the back plate is fixed to the side of the main structure of the launching or receiving well.

7. The novel shield launching and receiving foundation of claim 1, wherein the foundation unit is provided with inner triangular ribs, the diagonal sections of the inner triangular ribs are abutted with the outer portions of the inner flange plates of the H-section steel, the horizontal sections of the inner triangular ribs are connected with the base plate, and the tops of the inner triangular ribs are connected with the top plate and/or the inner flange plates of the H-section steel.

8. The new shield launching and receiving base of claim 1, wherein the base unit is further provided with an outer triangular rib plate, the inclined edge section of the outer triangular rib plate is of a stepped structure and abuts against the outer flange plate and the side plate of the H-beam, the horizontal section of the top of the outer triangular rib plate is connected with the lower surface of the connecting plate, and one side of the connecting plate is connected with the top of the outer flange plate of the H-beam.