CN220551133U - Combined cushion block for tunnel arch centering arch foot - Google Patents
Combined cushion block for tunnel arch centering arch foot Download PDFInfo
- Publication number
- CN220551133U CN220551133U CN202322231272.XU CN202322231272U CN220551133U CN 220551133 U CN220551133 U CN 220551133U CN 202322231272 U CN202322231272 U CN 202322231272U CN 220551133 U CN220551133 U CN 220551133U
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- China
- Prior art keywords
- cushion block
- steel
- arch
- wooden
- cushion
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000008093 supporting effect Effects 0.000 abstract description 8
- 239000000725 suspension Substances 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 19
- 101150097977 arch-1 gene Proteins 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000002023 wood Substances 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000004567 concrete Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000011378 shotcrete Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a combined cushion block for tunnel arch centering, which comprises a section steel arch, wherein the lower part of the arch centering of the section steel arch is provided with a combined cushion block formed by movably connecting a steel cushion block and a wooden cushion plate. Through setting up this combination cushion in the unsettled position of the hunch foot of shaped steel bow member, can effectively guarantee the supporting effect of tunnel bow member. The wooden backing plate can be provided with various height specifications, and then the wooden backing plate with the corresponding height can be selected according to the arch foot suspension height of the section steel arch frame, so that the wooden backing plate is simple in structure, low in cost, high in dismounting convenience, good in flexibility and wide in application range.
Description
Technical Field
The utility model relates to a combined cushion block for a tunnel arch centering arch springing, and belongs to the technical field of tunnel construction.
Background
Because of the certain errors of the tunnel step excavation height and the machined section steel arch frame size, the erected section steel arch frame can not reach the top surface of the excavation step, and then the phenomenon that the arch frame arch feet are suspended occurs, and various construction problems such as initial support cracking deformation, instability collapse and the like can be induced. In view of the above problems, conventional designs provide auxiliary structures such as channel steel, concrete cushion blocks, etc., but the dimensions of the above structures are fixed, and cannot cope with the uncertain factor of arch machining errors. In the actual construction process, site workers often adopt stones or hole slag to fill arch feet of the arch frame, but the overall filling effect is poor due to irregular stones or insufficient compactness of the hole slag, the overall stress effect of the section steel arch frame can not be ensured, and certain construction safety hidden danger exists.
In order to solve the problems, the patent provides the combined cushion block for tunnel arch construction, which can flexibly adjust the supporting height and has reliable supporting effect, and has great practical significance.
Disclosure of Invention
In view of the above, the utility model aims to provide a combined cushion block for tunnel arch springing, which can overcome the defects in the prior art.
The utility model aims at realizing the following technical scheme:
the combined cushion block for the arch foot of the tunnel arch frame comprises a section steel arch frame, wherein the combined cushion block formed by movably connecting a steel cushion block and a wooden cushion plate is arranged below the arch foot of the section steel arch frame.
The steel cushion block is connected with the wooden cushion plate through a buckle structure.
The middle part of the upper surface of the steel cushion block is provided with a wedge-shaped groove, and the bottom of the wooden cushion block is provided with a wedge-shaped inserting part matched with the wedge-shaped groove, so that the wooden cushion block is buckled on the steel cushion block.
The steel cushion block is a rectangular steel plate, the length of the steel cushion block is 50-55cm, the width of the steel cushion block is 40-45cm, and the height of the steel cushion block is 8-10cm; the wedge-shaped groove is an equilateral trapezoid groove with a wide upper part and a narrow lower part, the side length of the upper part of the equilateral trapezoid groove is 30-35cm, and the depth of the groove is 5-6cm.
The wooden base plate is provided with various specifications according to the height and the size of the wooden base plate.
The wooden backing plate is composed of a wedge-shaped inserting part and a rectangular heightening part arranged at the top of the wedge-shaped inserting part, the height setting range of the rectangular heightening part is 3-15 cm, and one height type is set every 3 cm.
A plurality of strip-shaped grooves are arranged on the top surface of the rectangular heightening part along the direction perpendicular to the axis of the tunnel.
Compared with the prior art, the combined cushion block for the tunnel arch centering disclosed by the utility model comprises the section steel arch centering, wherein the combined cushion block formed by movably connecting the steel cushion block and the wooden cushion plate is arranged below the arch centering of the section steel arch centering. Through setting up this combination cushion in the unsettled position of the hunch foot of shaped steel bow member, can effectively guarantee the supporting effect of tunnel bow member. The wooden backing plate can be provided with various height specifications, and then the wooden backing plate with the corresponding height can be selected according to the arch foot suspension height of the section steel arch frame, so that the wooden backing plate is simple in structure, low in cost, high in dismounting convenience, good in flexibility and wide in application range.
The beneficial effects of the utility model are as follows:
(1) According to the utility model, the steel cushion block with the wedge-shaped grooves and the combined cushion block formed by splicing the freely replaceable wooden cushion blocks are adopted to fill the suspended part of the arch springing of the steel arch, and the matched wooden cushion blocks can be selected in a targeted manner according to different suspended heights of the arch springing, so that the problem of suspended arch springing of the steel arch caused by construction errors and other factors can be effectively solved;
(2) The combined cushion block adopts the embedded wooden cushion plate to be matched with the steel cushion plate with the wedge-shaped groove, and the steel cushion plate at the outer side can be fully utilized to fasten and support the wooden cushion plate to a certain extent, so that the supporting strength of the combined cushion plate is effectively ensured;
(3) The surface of the wooden base plate is provided with the strip-shaped grooves, so that on one hand, the close adhesion of the wooden base plate and the profile steel arch frame can be avoided, the dismantling construction of the wooden base plate can be facilitated, on the other hand, the anti-skid effect of the surface of the wooden base plate can be improved, and the stability of the profile steel arch frame at the upper part can be improved;
(4) The wooden base plate is used as a supporting structure which is directly contacted with the profile steel arch, the steel cushion block with relatively high manufacturing cost is connected with the wooden wedge-shaped cushion block through the wedge-shaped connecting block with small opening at the lower part and large opening at the upper part, so that the phenomenon that the wedge-shaped concave channel steel base plate and the profile steel arch are fixed and dead by sprayed concrete can be effectively avoided, the dismantling difficulty of the wedge-shaped concave channel steel cushion block is reduced, and the recycling rate of the wedge-shaped concave channel steel cushion block is improved;
(5) The wood pad is made of the wood which is convenient to obtain materials, convenient to process and low in price, so that economic loss caused by possible damage of the wood wedge-shaped pad in the dismantling process is effectively reduced, and the construction cost can be effectively controlled.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the construction state of the present utility model;
FIG. 3 is a schematic view of a steel pad;
fig. 4 is a schematic structural view of a wood pallet.
Detailed Description
Hereinafter, preferred embodiments of the present utility model will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.
In the case of example 1,
as shown in fig. 1-4, a combined cushion block for a tunnel arch centering arch leg comprises a section steel arch centering 1, wherein the section steel arch centering 1 is a common supporting arch centering in the existing tunnel construction, and a combined cushion block formed by movably connecting a steel cushion block 2 and a wooden cushion plate 3 is arranged below the arch leg of the section steel arch centering 1, so that the problem of suspending the arch leg of the section steel arch centering 1 can be effectively solved.
The steel cushion block 2 and the wooden cushion plate 3 are connected through a buckle structure. Specifically, a wedge-shaped groove 2.1 is formed in the middle of the upper surface of the steel cushion block 2, and a wedge-shaped plug-in part 3.1 matched with the wedge-shaped groove is formed in the bottom of the wooden cushion plate 3, so that the wooden cushion plate 3 is buckled on the steel cushion block 2.
The steel cushion block 2 is a rectangular steel plate, the length of the steel cushion block is 50-55cm, the width of the steel cushion block is 40-45cm, and the height of the steel cushion block is 8-10cm; the wedge-shaped groove 2.1 is an equilateral trapezoid groove with a wide upper part and a narrow lower part, the side length of the upper part of the equilateral trapezoid groove is 30-35cm, and the depth of the groove is 5-6cm.
The wooden base plate 3 is provided with various specifications according to the height dimension thereof, and then the wooden base plate with corresponding height can be selected according to the arch foot suspension height of the profile steel arch 1. Preferably, the wooden base plate 3 is composed of a wedge-shaped inserting part 3.1 and a rectangular heightening part 3.2 arranged at the top of the wedge-shaped inserting part, the height setting range of the rectangular heightening part 3.2 is 3-15 cm, and one height category is set every 3 cm. The wedge-shaped inserting part 3.1 and the rectangular heightening part 3.2 can be of an integrated structure or a split structure. The integrated structure is simple in manufacturing process and low in processing cost, the split structure can be assembled in a bolt and buckle connection mode, the split structure is convenient to replace, and material cost is saved.
A plurality of strip-shaped grooves 3.3 are arranged on the top surface of the rectangular heightening part 3.2 along the direction perpendicular to the axis of the tunnel. The strip-shaped grooves 3.3 can prevent the wooden base plate from being closely attached to the section steel arch frame, facilitate the dismantling construction of the wooden base plate, increase the anti-slip effect of the surface of the wooden base plate and improve the stability of the section steel arch frame on the upper portion.
The method comprises the steps that the excavation of the upper steps of a tunnel is completed, in the erecting process of the profile steel arch 1 at the upper step position, virtual slag at the arch foot position of the profile steel arch 1 is cleaned, the pre-assembly of the profile steel arch 1 is carried out, and then the suspended height of the arch foot of the profile steel arch 1 is measured; if the suspended height is not available or is smaller, the combined cushion block is not needed, and the construction is carried out by adopting a conventional arch frame assembly process; if the suspension height is large, the assembly construction of the arch centering is needed by means of the combined cushion blocks, and the concrete construction steps are as follows:
1) According to the arch foot suspension height of the section steel arch 1, a wood base plate 3 with a proper size is selected, and a wedge-shaped inserting part 3.1 of the wood base plate (3) is inserted into a wedge-shaped groove 2.1 of a steel cushion block 2 to be assembled into a combined cushion block structure with a proper height;
2) Placing the assembled combined cushion block structure at the arch foot position of the section steel arch 1, and further performing formal assembly construction of the section steel arch 1;
3) After the profile steel arch 1 is erected, constructing a foot locking anchor rod and other supporting structures which are rigidly connected with the profile steel arch 1, and performing concrete spraying construction on the range of the profile steel arch 1;
4) After the sprayed concrete forms strength, the next excavation step is excavated, the steel cushion block 2 and the wooden cushion plate 3 are removed in the excavation process, and the steel cushion block 2 is prevented from falling off directly and being smashed by constructors in the removal process; if the steel cushion block 2 cannot automatically fall off, an iron hammer can be used for tapping the top edge of the steel cushion block 2; if the wooden wedge-shaped cushion block 3 can not automatically fall off, the steel bars can be used for tilting along the strip-shaped grooves 3.3;
5) After the steel cushion block 2 and the wooden cushion plate 3 are dismantled, the steel cushion block is placed in a non-construction area in the tunnel for subsequent recycling, and then the splicing construction of the lower I-steel is carried out, so that a complete working procedure cycle of the combined cushion block auxiliary tunnel arch frame construction is completed.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variations and modification made to the above embodiment according to the technical matter of the present utility model without departing from the technical scope of the present utility model still fall within the scope of the technical scheme of the present utility model.
Claims (7)
1. The utility model provides a tunnel bow member arch foot is with combination formula cushion, includes shaped steel bow member (1), its characterized in that: a combined cushion block formed by movably connecting a steel cushion block (2) and a wooden cushion plate (3) is arranged below the arch foot of the section steel arch (1).
2. A tunnel arch springing combination cushion according to claim 1, wherein: the steel cushion block (2) is connected with the wooden cushion plate (3) through a buckle structure.
3. A tunnel arch springing combination cushion according to claim 2, wherein: the middle part of the upper surface of the steel cushion block (2) is provided with a wedge-shaped groove (2.1), and the bottom of the wooden cushion block (3) is provided with a wedge-shaped inserting part (3.1) which is matched with the wedge-shaped groove (2.1), so that the wooden cushion block (3) is buckled on the steel cushion block (2).
4. A tunnel arch springing combination cushion according to claim 3, wherein: the steel cushion block (2) is a rectangular steel plate, the length of the steel cushion block is 50-55cm, the width of the steel cushion block is 40-45cm, and the height of the steel cushion block is 8-10cm; the wedge-shaped groove (2.1) is an equilateral trapezoid groove with wide upper part and narrow lower part, the side length of the upper part of the equilateral trapezoid groove is 30-35cm, and the depth of the groove is 5-6cm.
5. A tunnel arch springing combination cushion according to claim 4, wherein: the wooden base plate (3) is provided with various specifications according to the height and the size of the wooden base plate.
6. A tunnel arch springing combination cushion according to claim 5, wherein: the wooden base plate (3) is composed of a wedge-shaped inserting part (3.1) and a rectangular heightening part (3.2) arranged at the top of the wedge-shaped inserting part, the height setting range of the rectangular heightening part (3.2) is 3-15 cm, and one height type is set every 3 cm.
7. A tunnel arch springing combination spacer according to any one of claims 1 to 6, wherein: a plurality of strip-shaped grooves (3.3) are arranged on the top surface of the rectangular heightening part (3.2) along the direction perpendicular to the axis of the tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322231272.XU CN220551133U (en) | 2023-08-18 | 2023-08-18 | Combined cushion block for tunnel arch centering arch foot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322231272.XU CN220551133U (en) | 2023-08-18 | 2023-08-18 | Combined cushion block for tunnel arch centering arch foot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220551133U true CN220551133U (en) | 2024-03-01 |
Family
ID=90006206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322231272.XU Active CN220551133U (en) | 2023-08-18 | 2023-08-18 | Combined cushion block for tunnel arch centering arch foot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220551133U (en) |
-
2023
- 2023-08-18 CN CN202322231272.XU patent/CN220551133U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |