CN213088025U - Novel tunnel supporting steel arch frame of I-steel and stiffening steel plate - Google Patents
Novel tunnel supporting steel arch frame of I-steel and stiffening steel plate Download PDFInfo
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- CN213088025U CN213088025U CN202022851867.1U CN202022851867U CN213088025U CN 213088025 U CN213088025 U CN 213088025U CN 202022851867 U CN202022851867 U CN 202022851867U CN 213088025 U CN213088025 U CN 213088025U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 193
- 239000010959 steel Substances 0.000 title claims abstract description 193
- 230000007704 transition Effects 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 8
- 238000010276 construction Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
A novel tunnel supporting steel arch center of an I-shaped steel and a stiffening steel plate is formed by splicing an arc-shaped I-shaped steel section (1) welded with the stiffening steel plate and an arc-shaped I-shaped steel transition section (2) not welded with the stiffening steel plate in a staggered manner; the arc-shaped I-shaped steel section (1) welded with the stiffening steel plates is formed by welding a group of stiffening steel plates (3) between the upper wing plate and the lower wing plate of the I-shaped steel and the web plate at intervals. The utility model discloses compare with traditional steel bow member, intensity is higher, and the structure is more reliable, can improve the construction security. The utility model discloses simple structure, simple and convenient swift, the cost of manufacture of preparation are low, have better application prospect.
Description
Technical Field
The utility model relates to a component technical field for the tunnel construction, the steel bow member that is used for the tunnel to support in the concretely relates to tunnel construction.
Background
Among many schemes of tunnel support construction, steel arch construction is the most important for tunnel safety. The steel arch centering of tunnel that uses at present all forms a set of whole by the combination of I-steel section by section for strut tunnel, prevent that the soil body, rock mass above the tunnel from collapsing, guarantee construction safety. In order to ensure the strength, rigidity and bearing capacity of the steel arch frame, the adopted I-shaped steel has larger specification, the wing plates and the web plates of the I-shaped steel are thicker, the overall dimension is larger, the whole steel arch frame is formed by welding multiple sections of I-shaped steel, and the manufactured steel arch frame has larger self weight. In addition, as shown in fig. 1 and 2, holes are sequentially punched along the web plate B of the I-shaped steel A and small grouting pipes C are penetrated through the holes to increase the area and strength of the supporting tunnel. However, the construction is inconvenient due to the limitation of the site in the tunnel, the small conduit for punching and grouting is inconvenient, the construction is complex, time and labor are wasted, the precision of the steel arch frame cannot be accurately controlled, the strength of the I-steel is not fully utilized, the steel consumption is large, the cost is increased from this point, and the economic cost is large. Therefore, how to manufacture a steel arch frame which is efficient, economical and applicable and reduce the complexity of construction is a problem to be solved at present.
Disclosure of Invention
The utility model aims at solving the not enough of prior art, provide a construction convenience, save steel, and structural strength and the good I-steel of rigidity adds the novel tunnel support steel bow member of steel sheet of putting more energy into.
The utility model adopts the technical scheme as follows:
a novel tunnel supporting steel arch center of an I-shaped steel and stiffening steel plate is formed by splicing an arc-shaped I-shaped steel stiffening section welded with the stiffening steel plate and an arc-shaped I-shaped steel transition section not welded with the stiffening steel plate in a staggered manner; the arc-shaped I-shaped steel stiffening section welded with the stiffening steel plates is formed by welding a group of stiffening steel plates between the upper wing plate and the lower wing plate of the I-shaped steel and the web plate at intervals.
Furthermore, the tunnel supporting steel arch frame is formed by splicing a central I-shaped steel stiffening section positioned in the center of the top, I-shaped steel transition sections symmetrically connected to two ends of the central I-shaped steel stiffening section and lower I-shaped steel stiffening sections symmetrically connected to the lower end of the I-shaped steel transition sections.
Furthermore, the stiffening steel plates are arranged at unequal intervals.
Furthermore, the stiffening steel plates are arranged at equal intervals.
Furthermore, the stiffening steel plates positioned on two sides of the I-shaped steel web plate are symmetrically arranged or staggered.
Furthermore, a transverse supporting I-shaped steel member is connected between the bottom openings of the tunnel supporting steel arch frames.
Further, the supporting I-shaped steel member is an arc-shaped I-shaped steel member which is bent downwards.
The utility model discloses a welding has the curved I-steel section of putting more energy into of steel sheet and the crisscross concatenation of curved I-steel changeover portion of not welding the steel sheet of putting more energy into, has the curved I-steel section of putting more energy into through the welding, reaches the effect that strengthens I-steel bow member intensity by a wide margin to under same rigidity and intensity index requirement and the same bearing capacity, can adopt the I-steel of less specification. Meanwhile, the I-steel transition sections without welded stiffening steel plates are arranged between the I-steel stiffening sections under the condition that the I-steel stiffening sections arranged at intervals can meet the supporting force of the tunnel supporting steel arch, so that the overall weight of the supporting steel arch can be reduced, the material cost is reduced, and the manufacturing time of the steel arch can be shortened. The utility model discloses compare with traditional steel bow member, intensity is higher, and the structure is more reliable, can improve the construction security to no longer need punch on the I-steel and wear the slip casting and lead for a short time, reduce the construction degree of difficulty by a wide margin, improve the efficiency of construction. The utility model discloses simple structure, simple and convenient swift, the cost of manufacture of preparation are low, have better application prospect.
Drawings
FIG. 1 is a schematic diagram of a prior art steel arch construction for a tunnel;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic structural diagram of the present invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a cross-sectional view A-A of FIG. 3;
FIG. 6 is a schematic structural view of a section of the I-steel stiffening section of the present invention;
fig. 7 is a schematic view of the practical application of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
The novel tunnel supporting steel arch center of the I-steel stiffened steel plate shown in the figures 3, 4 and 5 is formed by splicing an arc-shaped I-steel stiffening section 1 welded with the stiffened steel plate and an arc-shaped I-steel transition section 2 not welded with the stiffened steel plate in a staggered manner. The arc I-shaped steel stiffening section 1 welded with the stiffening steel plates is formed by welding a group of stiffening steel plates 3 between the upper wing plate and the lower wing plate of the I-shaped steel and the web plate at intervals. The stiffened steel plate is generally a rectangular plate. Between the bottom openings of the tunnel supporting steel arches, transverse supporting i-steel members 4 can also be connected, the supporting i-steel members 4 being typically arc-shaped i-steel members that are slightly bent downwards.
Making the utility model discloses the time, make curved I-steel section 1 of putting more energy into and curved I-steel changeover portion 2 respectively. The arc-shaped I-steel transition section 2 only needs to bend the I-steel with the selected specification into the required radian. When the arc-shaped I-steel stiffening section 1 is manufactured, firstly, the I-steel is processed into the arc-shaped I-steel according to the design radian, then the stiffening steel plate 3 is welded at the specific position obtained through design checking, and the I-steel stiffening section 1 and the I-steel transition section 2 are spliced in a staggered mode and connected through bolts to form the tunnel steel arch frame. The I-steel stiffening section improves the integral structural strength, rigidity, deformation resistance and structural stability of the steel arch frame component by adding the stiffening steel plate on the arc I-steel.
The stiffening steel plates 3 are reasonably arranged and can be arranged at equal intervals and also can be arranged at unequal intervals, the use strength requirement of the steel arch is met, the design specification requirement is met, steel is saved, and the weight of the whole tunnel steel arch is reduced as much as possible. Typically, the design specification requirements are met using the structure shown in FIG. 3. In the tunnel steel arch of fig. 3, stiffening plates are welded to the i-steel stiffening sections of the middle section and the end sections at both sides, and the stiffening plates do not need to be welded to the i-steel transition sections between the middle section and the end sections. Fig. 7 shows a preferred practical application example of the present invention, wherein the whole tunnel supporting steel arch is composed of a middle i-steel stiffening section 1 (unit a), a symmetric connection with i-steel transition section 2 (unit D) at both ends of the i-steel stiffening section (unit a), a i-steel stiffening section composed of unit B and unit C connected symmetrically with the lower end of the i-steel transition section (unit D), and a supporting i-steel member 4 made of i-steel, wherein the supporting i-steel member is composed of a middle E1 unit at the bottom and E2 units respectively disposed at both ends of the E2 unit. The interval between the adjacent stiffening steel plates in the a-unit was 745mm, the interval between the adjacent stiffening steel plates in the B-unit was 836mm, and the interval between the adjacent stiffening steel plates 3 in the C-unit was 705 mm.
Adopt the utility model discloses a tunnel steel bow member no longer need punch on the web of I-steel and penetrate the little pipe of slip casting, has simplified construction process, construction convenience greatly. And because the stiffening steel plate is added on the I-steel, compared with the steel arch centering in the prior art, the I-steel specification for manufacturing the steel arch centering can be reduced, the external dimension of the I-steel and the thicknesses of the wing plate and the web plate are reduced, but the integral bearing capacity of the steel arch centering is not reduced, the structural strength, the deformation and the stability of the steel arch centering can meet the design specification requirements, and the steel arch centering is particularly suitable for the construction of underground engineering, underwater tunnels and the like.
Claims (9)
1. A novel tunnel supporting steel arch center of an I-steel reinforced steel plate is characterized in that the tunnel supporting steel arch center is formed by splicing an arc I-steel reinforced section (1) welded with the reinforced steel plate and an arc I-steel transition section (2) not welded with the reinforced steel plate in a staggered manner; the arc-shaped I-shaped steel stiffening section (1) welded with the stiffening steel plates is formed by welding a group of stiffening steel plates (3) between the upper wing plate and the lower wing plate of the I-shaped steel and the web plate at intervals.
2. The new tunnel supporting steel arch of I-steel stiffened steel plate of claim 1, wherein said tunnel supporting steel arch is formed by splicing a central I-steel stiffening section located at the center of the top, I-steel transition sections symmetrically connected to both ends of the central I-steel stiffening section, and lower I-steel stiffening sections symmetrically connected to the lower end of the I-steel transition sections.
3. The new tunnel supporting steel arch of I-steel stiffened steel plate of claim 1 or 2, characterized in that the stiffened steel plates (3) are arranged at unequal intervals.
4. The new tunnel supporting steel arch of an i-steel stiffened steel plate according to claim 1 or 2, characterized in that the stiffened steel plates (3) are arranged at equal intervals.
5. A novel tunnel supporting steel arch center of i-steel stiffened steel plates of claim 1 or 2, wherein the stiffened steel plates at both sides of the i-steel web are symmetrically arranged or staggered.
6. The new tunnel supporting steel arch of I-steel stiffened steel plate of claim 3, characterized in that said stiffened steel plates (3) are arranged at unequal intervals.
7. The new tunnel supporting steel arch of I-steel stiffened steel plate of claim 4, characterized in that said stiffened steel plates (3) are arranged at equal intervals.
8. The new tunnel supporting steel arch of an i-steel stiffened steel plate according to claim 1 or 2, characterized in that between the bottom openings of the tunnel supporting steel arch there are connected transverse supporting i-steel members (4).
9. The new tunnel supporting steel arch of an i-steel stiffened steel plate according to claim 8, characterized in that the supporting i-steel member (4) is a curved i-steel member that is bent down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022851867.1U CN213088025U (en) | 2020-12-01 | 2020-12-01 | Novel tunnel supporting steel arch frame of I-steel and stiffening steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022851867.1U CN213088025U (en) | 2020-12-01 | 2020-12-01 | Novel tunnel supporting steel arch frame of I-steel and stiffening steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213088025U true CN213088025U (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022851867.1U Expired - Fee Related CN213088025U (en) | 2020-12-01 | 2020-12-01 | Novel tunnel supporting steel arch frame of I-steel and stiffening steel plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213088025U (en) |
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2020
- 2020-12-01 CN CN202022851867.1U patent/CN213088025U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210430 |
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| CF01 | Termination of patent right due to non-payment of annual fee |