CN210289791U - Shield tunnel lining segment adaptable to large deformation - Google Patents
Shield tunnel lining segment adaptable to large deformation Download PDFInfo
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- CN210289791U CN210289791U CN201920668133.4U CN201920668133U CN210289791U CN 210289791 U CN210289791 U CN 210289791U CN 201920668133 U CN201920668133 U CN 201920668133U CN 210289791 U CN210289791 U CN 210289791U
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Abstract
The utility model discloses a shield tunnel lining segment that adaptable big deformation, including the steel box body, first reinforced concrete part and second reinforced concrete part, the steel box body includes first hoop floor, second hoop floor, corrugated steel board, L shape shearing end push key and a font shearing end push key, L shape shearing end push key includes the first section that is on a parallel with first hoop floor and the second section that is perpendicular to first hoop floor, interval delta h all exists between a font shearing end push key and the first section, the interval between a font shearing end push key and the second section is delta v; one side of the first annular rib plate, which is far away from the second annular rib plate, is fixed with the first reinforced concrete part, and one side of the second annular rib plate, which is far away from the first annular rib plate, is fixed with the second reinforced concrete part. The utility model discloses both allowed the lining cutting section of jurisdiction to produce tensile, compression and the shearing deformation of moderate degree, can control its deflection again, its control is simple and convenient, can effective reduce cost.
Description
Technical Field
The utility model belongs to the technical field of tunnel engineering, more specifically relates to a shield tunnel lining section of jurisdiction.
Background
In the shield tunnel, the concrete lining segment has the obvious advantages of high rigidity, good durability and low cost, and is the main material of the shield tunnel lining structure in the world at present. But the traditional concrete segment through vertical bolted connection adapts to deformability relatively poorly, when the shield tunnel passes through earthquake activity fault, need adopt the segment structure that can adapt to great deformability to prevent lining cutting structure damage. The allowable deformation of the structure includes three aspects of tension, compression and shear.
The construction precedent of setting a shield tunnel which passes through an active fault and is suitable for a large-deformation lining ring is not seen in China, the foreign cases are few, the representative case is the subaerial submarine tunnel of Turkey, and the treatment measure is to set the large-deformation steel pipe sheet lining ring. This structure is connected two box steel construction through a plurality of adaptable steel casings of drawing pressure and shear deformation, for solving the waterproof problem of section of jurisdiction, sets up twice wave form rubber waterproof board in the steel casing outside, and the rubber slab passes through bolt and steel pressing plate and steel case is fixed. The large-deformation lining segment has the advantages that the large-deformation lining segment can adapt to certain stretching, compression and shearing deformation, and has the defects that the segment main body is completely of a steel structure, the structure and the waterproof structure are complex, the cost is high, and the economical efficiency is poor.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve the demand, the utility model provides a shield tunnel lining section of jurisdiction of adaptable big deformation, the utility model discloses from section of jurisdiction structure material, adapt to the first-class three aspect of structure, the waterproof structure of big deformation, provide a concrete and steel construction combine together, utilize the steel construction to realize the novel section of jurisdiction structure from waterproof and the production of usable concrete lining section of jurisdiction mould. The utility model discloses a solve current big deformation steel-pipe piece processing technology complicated, problem with high costs.
To achieve the above objects, according to one aspect of the present invention, there is provided a shield tunnel lining segment adaptable to large deformation, comprising a steel box body, a first reinforced concrete portion and a second reinforced concrete portion, wherein,
the steel box body comprises a first annular rib plate, a second annular rib plate, a corrugated steel plate, an L-shaped shear-resistant push-stop key and a linear shear-resistant push-stop key, wherein the first annular rib plate is integrally arc-shaped, the first annular rib plate and the second annular rib plate have the same structure and are parallel to each other, the corrugated steel plate is positioned between the first annular rib plate and the second annular rib plate, one end of the corrugated steel plate is welded with the first annular rib plate, the other end of the corrugated steel plate is welded with the second annular rib plate, the L-shaped shear-resistant push-stop key comprises a first section parallel to the first annular rib plate and a second section vertical to the first annular rib plate, the first section is welded on the first annular rib plate, a distance exists between the second section and the second annular rib plate, one end of the linear shear-shaped push-stop key is welded on the second annular rib plate, and a distance delta h exists between the other end of the linear shear-shaped push, the distance between the linear shear-resistant thrust key and the second section is delta v;
one side of the first annular rib plate, which is far away from the second annular rib plate, is fixed with the first reinforced concrete part, and one side of the second annular rib plate, which is far away from the first annular rib plate, is fixed with the second reinforced concrete part.
Preferably, the first annular rib plate and the second annular rib plate are respectively fixed with the first reinforced concrete part and the second reinforced concrete part through a plurality of anchor bars, so that the middle steel box body is integrally connected with the first reinforced concrete part and the second reinforced concrete part on two sides.
Preferably, the steel box body further comprises an outer arc steel plate, the radian of the outer arc steel plate is consistent with that of the first annular rib plate, and the outer arc steel plate is connected with the outer arc edge of the first annular rib plate and the outer arc edge of the second annular rib plate.
Preferably, sealing grease is arranged between the corrugated steel plate and the steel plate with the outer cambered surface.
Preferably, the deck plate is provided with a plurality of pieces.
Preferably, the corrugated steel plate and the first and second circumferential rib plates respectively adopt seal welding to form watertight welds so as to realize water resistance.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
1) the utility model discloses a lining cutting section of jurisdiction structure of reinforced concrete section of jurisdiction and steel box combination, the steel box body can be processed in advance, then is connected the back with the steel reinforcement cage of reinforced concrete section of jurisdiction and places the mould in and pour the concrete and become monoblock lining cutting section of jurisdiction, and it is convenient quick to make, can effectively reduce manufacturing cycle and improve manufacturing efficiency.
2) The utility model discloses a steel box has adopted the ripple steel sheet structure, and the drawing, compression and the shearing deformation of adaptable lining cutting section of jurisdiction, adaptability is good.
3) The utility model discloses a weld through corrugated steel plate and hoop floor, can effectively realize waterproofly.
4) The utility model discloses a set up L shape and cut only push key and a font and cut only push key that cuts, weld respectively on both sides hoop floor, L shape cut only push key and a font and cut the interval delta v between only push key and be just building the biggest shear deformation volume that the section of jurisdiction is allowed for just, clearance delta h is the biggest compression deformation volume that allows for, both allowed the lining cutting section of jurisdiction to produce moderate degree tensile, compression and shear deformation, can control its deflection again, control is simple and convenient, can effectively reduce cost.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a cross section of the structure of the present invention during stretching deformation;
FIG. 3 is a cross section of the structure of the present invention in compression deformation;
fig. 4 is a cross section of the structure when the utility model is sheared and deformed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 4, a shield tunnel lining segment adaptable to large deformation includes a reinforced box body 1, a first reinforced concrete portion 2 and a second reinforced concrete portion 3, wherein,
the steel box body 1 comprises a first annular rib plate 11, a second annular rib plate 12, a corrugated steel plate 13, an L-shaped shear-resisting push-stopping key 14 and a linear shear-resisting thrust 15 key, wherein the first annular rib plate 11 is integrally arc-shaped, the first annular rib plate 11 and the second annular rib plate 12 have the same structure and are parallel to each other, the corrugated steel plate 13 is positioned between the first annular rib plate 11 and the second annular rib plate 12, one end of the corrugated steel plate 13 is welded with the first annular rib plate 11, the other end of the corrugated steel plate 13 is welded with the second annular rib plate 12, the L-shaped shear-resisting push-stopping key 14 comprises a first section 141 parallel to the first annular rib plate 11 and a second section 142 perpendicular to the first annular rib plate 11, the first section 141 is welded on the first annular rib plate 11, a gap is reserved between the second section 142 and the second annular rib plate 12, and one end of the linear shear-resisting thrust 15 key is welded on the second annular rib, the other end of the in-line shear-and-thrust 15 key is spaced from the first segment 141 by an interval Δ h and is contactable when the first and second circumferential ribs 11 and 12 have a first relative displacement, and the in-line shear-and-thrust 15 key is spaced from the second segment 142 by an interval Δ v and is contactable when the first and second circumferential ribs 11 and 12 have a second relative displacement, wherein the first relative displacement is a displacement in the axial direction of the shield tunnel and the second relative displacement is a displacement in the radial direction of the shield tunnel.
One side of the first annular rib plate 11, which is far away from the second annular rib plate 12, is fixed with the first reinforced concrete part 2, and one side of the second annular rib plate 12, which is far away from the first annular rib plate 11, is fixed with the second reinforced concrete part 3.
When the shield tunnel is longitudinally stretched and deformed, the corrugated steel plate of the lining segment is straightened, the difference value between the straightened length of the corrugated steel plate and the straightened length is the allowable maximum stretching deformation, and the thickness and the corrugation size of the corrugated steel plate 13 can be designed according to the required deformation and the required borne tension in the actual engineering.
When compression deformation or shear deformation occurs along the longitudinal direction of the shield tunnel, the corrugated steel plate bends along the existing waveform, and can adapt to larger deformation on the premise that steel is not damaged;
the utility model discloses a control range of shearing and compressive deformation volume, interval certain distance welding L shape thrust key 14 and the straight line thrust 15 key that shears shear on the hoop floor, L shape thrust key 14 that shears is the L shape steel sheet, straight line thrust 15 key that shears is a straight line flat steel sheet, they weld respectively on both sides hoop floor, L shape thrust key 14 and the straight line thrust 15 key that shears interval delta v between the interval delta v be the biggest shear deformation volume of allowwing promptly, interval delta h is the biggest compressive deformation volume of allowwing promptly.
Further, the first annular rib plate 11 and the second annular rib plate 12 are fixed with the first reinforced concrete part 2 and the second reinforced concrete part 3 through a plurality of anchor bars respectively, so that the middle steel box body 1 is integrally connected with the first reinforced concrete part 2 and the second reinforced concrete part 3 on two sides, the anchor bars connected with the first annular rib plate 11 are marked as anchor bars a21, the anchor bars a21 are welded with the reinforcement cage of the first reinforced concrete part 2, the anchor bars connected with the second annular rib plate 12 are marked as anchor bars B31, and the anchor bars B31 are welded with the reinforcement cage of the second reinforced concrete part 3, so that the first annular rib plate 11 is firmly connected with the first reinforced concrete part 2, and the second annular rib plate 12 is firmly connected with the second reinforced concrete part 3. The first reinforced concrete portion 2 and the second reinforced concrete portion 3 on both sides have a composition similar to that of a general concrete segment.
Further, the steel box body 1 further comprises an outer arc steel plate 16, the radian of the outer arc steel plate 16 is consistent with that of the first annular rib plate 11, and the outer arc steel plate 16 is connected with the outer arc edge of the first annular rib plate 11 and the outer arc edge of the second annular rib plate 12, so that the steel box body 1 is locally sealed. In order to meet the tunneling construction requirement of the shield tunnel, a thin steel plate is welded on the outer arc surface of the lining segment, so that the outer surface of the lining segment is continuous. The extrados steel plate 16 is a temporary structure during construction, and when the lining segment is subjected to tension-compression or shear deformation during use, the extrados steel plate 16 is allowed to be firstly damaged.
Further, a seal grease space 18 is provided between the corrugated steel plate 13 and the extrados steel plate 16, and seal grease is provided in the seal grease space 18. In order to improve the waterproof reliability and prevent the outer corrugated steel plate from being rusted, sealing grease is injected into the closed space between the outer corrugated steel plate and the outer corrugated steel plate 16 through a grease injection hole formed in the outer corrugated steel plate 16.
Further, the corrugated steel plate 13 is provided with a plurality of blocks, and in addition, the corrugated steel plate 13 and the first annular rib plate 11 and the second annular rib plate 12 respectively adopt seal welding to form a watertight welding seam 17 so as to realize water resistance.
The utility model discloses a structure of first reinforced concrete part 2 and the combination of steel box 1, when the lining cutting piece of jurisdiction was made, can process middle steel box 1 in advance, then through anchor bar A21 and anchor bar B31 with the first reinforced concrete part 2 of both sides, the steel reinforcement cage of second reinforced concrete part 3 connect as an organic whole, hoist and mount and lay in the concrete pipe mould, then pour the concrete of first reinforced concrete part 2, second reinforced concrete part 3, form monoblock lining cutting piece of jurisdiction finally; the steel box body 1 is internally provided with a continuous corrugated steel plate 13 structure, so that the steel box body is suitable for stretching, compressing and shearing deformation, and meanwhile, the steel box body is welded with a circumferential rib plate to realize a waterproof function. Compared with the existing large-deformation steel pipe sheet ring for connecting the steel box body 1 by using the steel sleeve, the steel box body 1 has the advantages of simple processing technology, water resistance, reliability, small steel consumption and low cost on the premise of realizing the same use function.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A shield tunnel lining segment adaptable to large deformation is characterized by comprising a steel box body, a first reinforced concrete part and a second reinforced concrete part, wherein,
the steel box body comprises a first annular rib plate, a second annular rib plate, a corrugated steel plate, an L-shaped shear-resistant push-stop key and a linear shear-resistant push-stop key, wherein the first annular rib plate is integrally arc-shaped, the first annular rib plate and the second annular rib plate have the same structure and are parallel to each other, the corrugated steel plate is positioned between the first annular rib plate and the second annular rib plate, one end of the corrugated steel plate is welded with the first annular rib plate, the other end of the corrugated steel plate is welded with the second annular rib plate, the L-shaped shear-resistant push-stop key comprises a first section parallel to the first annular rib plate and a second section vertical to the first annular rib plate, the first section is welded on the first annular rib plate, a distance exists between the second section and the second annular rib plate, one end of the linear shear-shaped push-stop key is welded on the second annular rib plate, and a distance delta h exists between the other end of the linear shear-shaped push, the distance between the linear shear-resistant thrust key and the second section is delta v;
one side of the first annular rib plate, which is far away from the second annular rib plate, is fixed with the first reinforced concrete part, and one side of the second annular rib plate, which is far away from the first annular rib plate, is fixed with the second reinforced concrete part.
2. The shield tunnel lining segment capable of adapting to the large deformation of claim 1, wherein the first and second circumferential rib plates are respectively fixed with the first and second reinforced concrete portions through a plurality of anchor bars, thereby integrally connecting the middle steel box body with the first and second reinforced concrete portions at both sides.
3. The shield tunnel lining segment adaptable to large deformation according to claim 1, wherein the steel box body further comprises an outer arc steel plate, the radian of the outer arc steel plate is consistent with that of the first circumferential rib plate, and the outer arc steel plate is connected with the outer arc edge of the first circumferential rib plate and the outer arc edge of the second circumferential rib plate.
4. The shield tunnel lining segment capable of adapting to large deformation according to claim 3, wherein sealing grease is arranged between the corrugated steel plate and the extrados steel plate.
5. The shield tunnel lining segment capable of adapting to the large deformation of claim 1, wherein the corrugated steel plate is provided with a plurality of pieces.
6. The shield tunnel lining segment adaptable to large deformation according to claim 1, wherein the corrugated steel plate and the first and second circumferential rib plates are respectively sealed to form watertight welds to achieve water resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920668133.4U CN210289791U (en) | 2019-05-10 | 2019-05-10 | Shield tunnel lining segment adaptable to large deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920668133.4U CN210289791U (en) | 2019-05-10 | 2019-05-10 | Shield tunnel lining segment adaptable to large deformation |
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| Publication Number | Publication Date |
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| CN210289791U true CN210289791U (en) | 2020-04-10 |
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| CN201920668133.4U Active CN210289791U (en) | 2019-05-10 | 2019-05-10 | Shield tunnel lining segment adaptable to large deformation |
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| CN (1) | CN210289791U (en) |
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