CN210217777U - Contractible joint for telescopic steel arch frame - Google Patents
Contractible joint for telescopic steel arch frame Download PDFInfo
- Publication number
- CN210217777U CN210217777U CN201920896430.4U CN201920896430U CN210217777U CN 210217777 U CN210217777 U CN 210217777U CN 201920896430 U CN201920896430 U CN 201920896430U CN 210217777 U CN210217777 U CN 210217777U
- Authority
- CN
- China
- Prior art keywords
- shaped steel
- guide rail
- steel
- screw
- steel arch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a tunnel engineering construction technical field, concretely relates to yieldability connects for scalable steel bow member. The utility model relates to a yieldable joint for a telescopic steel arch, which provides a yieldable joint aiming at the telescopic steel arch designed and manufactured by H-shaped steel, wherein two H-shaped steel are arranged at two ends of a hollow guide rail, one H-shaped steel can slide along the guide rail, and the other H-shaped steel is welded and fixed, on one hand, the function of 'firstly flexible and then rigid' of the steel arch is realized, and the contraction quantity of the steel arch is controllable; on the other hand, the strength distribution of the whole structure is even, the joint part does not generate large yield deformation, and the structure strength is reliable and safer in the sliding deformation process.
Description
Technical Field
The utility model relates to a tunnel engineering construction technical field, concretely relates to yieldability connects for scalable steel bow member.
Background
In tunnel construction, when a high ground stress tunnel is constructed, the problem of extrusion type surrounding rock support is often faced. The support of the extrusion type surrounding rock needs to adopt flexible support, namely after the steel arch is arranged on the tunnel surrounding rock, the steel arch is ensured to contract inwards along with the deformation of the surrounding rock on the premise of certain rigidity, so that the surrounding rock can fully exert the bearing capacity and reduce the ground stress. When the ground stress of the surrounding rock is reduced to a certain amount, the ground stress is also increased by continuing to deform the steel arch inward, and therefore, it is necessary to perform support with a large rigidity when the ground stress of the surrounding rock is reduced to a small level. Namely, the steel arch needs to realize the function of 'first flexible and then rigid'.
At present, the example of using H-shaped steel to design a telescopic steel arch frame exists in China. However, after the telescopic steel arch designed and manufactured by using the H-shaped steel is integrally pressed, the joint of the steel arch can slide, the bending moment of the joint in the sliding process is rapidly increased, and the joint of the H-shaped steel often generates large yield deformation, so that the joint is a stress weak point of the whole steel arch, the reliability is not high, and the potential safety hazard is very large.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the design of the joint of the telescopic steel arch is unreasonable, the steel arch can slide at the joint after being integrally pressed, the bending moment applied to the joint in the sliding process is increased sharply, and the joint part of the H-shaped steel can be subjected to large yield deformation, so that the joint part is a stress weak point of the whole steel arch, the reliability is low, and the potential safety hazard is very large.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
the H-shaped steel rails described below are each composed of two flanges and a web, and are identical to H-shaped steel in the related art, but differ only in that the rails have a hollow structure inside, and thus are defined as hollow H-shaped steel rails in the following description.
The utility model relates to a yieldable connects for scalable steel bow member, including the guide rail of hollow H shaped steel form, the one end that has first H shaped steel and second H shaped steel is inserted respectively at the both ends of guide rail, and just first H shaped steel and second H shaped steel keep having certain clearance in the guide rail.
Two wing plates of the guide rail are positioned at the insertion end of the first H-shaped steel and are provided with two rows of through holes with internal threads along the extending direction of the wing plates, two rows of through holes on one wing plate are arranged on the outer side of the wing plates, two rows of through holes on the other wing plate are arranged on the inner side of the wing plates and are screwed into the through holes on the guide rail through screws, and the screws are tightly fixed on the first H-shaped steel, so that the first H-shaped steel is tightly attached to the inner wall of the guide.
Further, all weld the nut on every through-hole, first H shaped steel inserts guide rail one end, and inside 3 guide rails are screwed in to the screw-thread fit on rethread screw 6 and nut 7 and the through-hole, screw 6 is tightly decided on first H shaped steel 1 for 3 inner walls of guide rail are hugged closely to first H shaped steel 1.
Preferably, the nut is a welded nut of the prior art.
Furthermore, two pterygoid laminas that first H shaped steel inserted guide rail one end all weld and increase the wear plate, and wherein one increases the wear plate and welds the outside at one of them pterygoid lamina, and wherein two increase the wear plate and weld the inboard of another pterygoid lamina and with the web symmetry. The surface of the friction increasing plate is rough, so that a larger friction force exists between the friction increasing plate and the guide rail.
The two wing plates at one end of the second H-shaped steel inserted into the guide rail are respectively welded with a backing plate, one backing plate is welded on the outer side of one wing plate, the two backing plates are welded on the inner side of the other wing plate and are symmetrical by webs, and the backing plates are welded on the inner wall of the guide rail, so that the second H-shaped steel is fixed in the guide rail through the backing plates; and on the other hand, the second H-shaped steel and the first H-shaped steel are positioned on the same horizontal plane.
The utility model has the advantages that: the utility model relates to a yieldable joint for a telescopic steel arch, which provides a yieldable joint aiming at the telescopic steel arch designed and manufactured by H-shaped steel, wherein two H-shaped steel are arranged at two ends of a hollow guide rail, one H-shaped steel can slide along the guide rail, and the other H-shaped steel is welded and fixed, on one hand, the function of 'firstly flexible and then rigid' of the steel arch is realized, and the contraction quantity of the steel arch is controllable; on the other hand, the strength distribution of the whole structure is even, the joint part does not generate large yield deformation, and the structure strength is reliable and safer in the sliding deformation process.
Drawings
Fig. 1 shows an axonometric view of the invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 shows a schematic view of the guide rail according to the present invention.
Description of reference numerals: 1. a first H-shaped steel; 2. a wear plate; 3. a guide rail; 4. a base plate; 5. a second H-shaped steel; 6. a screw; 7. and a nut.
Detailed Description
The best mode of the present invention will be described in detail with reference to fig. 1 to 3, and a flexible joint for a telescopic steel arch according to the present invention includes a hollow H-shaped steel rail 3, wherein one end of a first H-shaped steel 1 and one end of a second H-shaped steel 5 are respectively inserted into both ends of the rail 3, and the first H-shaped steel 1 and the second H-shaped steel 5 maintain a certain gap in the rail.
Two pterygoid laminas of guide rail 3 are located the end of inserting of first H shaped steel 1 and all are provided with two on the extending direction of pterygoid lamina and are listed as the through-hole that has the internal screw thread, and two on one of them pterygoid lamina are listed as the through-hole setting in the pterygoid lamina outside, and two on another pterygoid lamina are listed as the through-hole setting in the pterygoid lamina inboard to through the through-hole of screw 6 screw in on the guide rail 3, screw 6 is tightly decided on first H shaped steel 1, makes first H shaped steel.
Further, each through hole is welded with a nut 7, and the nut 7 is a welded nut in the prior art. First H shaped steel 1 inserts 3 one ends of guide rail, and inside the screw-in guide rail 3 of screw fit on rethread screw 6 and nut 7 and the through-hole, screw 6 is tightly decided on first H shaped steel 1 for 3 inner walls of guide rail are hugged closely to first H shaped steel 1.
Furthermore, two wing plates of the first H-shaped steel 1 inserted into one end of the guide rail 3 are welded with the wear increasing plates 2, one of the wear increasing plates 2 is welded on the outer side of one of the wing plates, and the two wear increasing plates 2 are welded on the inner side of the other wing plate and are symmetrical through the web plate.
Backing plates 4 are welded on two wing plates at one end of the second H-shaped steel 5 inserted into the guide rail 3, one backing plate 4 is welded on the outer side of one wing plate, so that the second H-shaped steel 5 is completely fixed in the guide rail 3, two backing plates 4 are welded on the inner side of the other wing plate and are symmetrical with the web plate, and the backing plates 4 are welded on the inner wall of the guide rail 3.
When the steel arch is compressed by high ground stress, the friction force between the first H-shaped steel 1 and the friction increasing plate 2 and the guide rail 3 cannot bear the ground stress and slides along the guide rail 3, and at the moment, the steel arch belongs to flexible support;
after the first H-shaped steel 1 slides to be in contact with the second H-shaped steel 5, the second H-shaped steel 5 is welded and fixed with the guide rail 3 through the backing plate 4, so that the first H-shaped steel 1 cannot slide any more, and at the moment, the steel arch is changed from original flexible support to rigid support.
Claims (6)
1. A yieldable joint for a telescopic steel arch, characterized by: the guide rail structure comprises a hollow H-shaped steel guide rail (3), wherein one ends of first H-shaped steel (1) and second H-shaped steel (5) are respectively inserted into two ends of the guide rail (3), and a certain gap is kept between the first H-shaped steel (1) and the second H-shaped steel (5) in the guide rail; two pterygoid laminas of guide rail (3) are located the end of inserting of first H shaped steel (1) and all are provided with two on the extending direction of pterygoid lamina and are listed as the through-hole that has the internal screw thread, and two on one of them pterygoid lamina are listed as the through-hole setting in the pterygoid lamina outside, and two on another pterygoid lamina are listed as the through-hole setting in the pterygoid lamina inboard to through screw (6) screw in to the through-hole on guide rail (3), the screw is tightly decided on first H shaped steel (1), makes first H shaped steel (1) hug closely.
2. A yieldable joint for a telescopic steel arch, according to claim 1, wherein: two rows of through holes on the outer side of the guide rail wing plate and the inner side of the wing plate are symmetrical through webs.
3. A yieldable joint for a telescopic steel arch, according to claim 2, wherein: all welded on every through-hole has nut (7), and screw-thread fit screw in on screw (6) and nut (7) and the through-hole is inside guide rail (3).
4. A yieldable joint for a telescopic steel arch, according to claim 3, wherein: the nut (7) is a welded nut in the prior art.
5. The yieldable joint for a telescopic steel arch according to any one of claims 1 to 4, wherein: two pterygoid laminas that first H shaped steel (1) inserted guide rail (3) one end all weld and increase wear plate (2), and wherein one increases wear plate (2) and welds the outside at one of them pterygoid lamina, and wherein two increase wear plate (2) weld the inboard of another pterygoid lamina and with the web symmetry.
6. A yieldable joint for a telescopic steel arch, according to claim 5, wherein: all welded backing plate (4) on two pterygoid laminas of second H shaped steel (5) insertion guide rail (3) one end, wherein a backing plate (4) welding is in the outside of one of them pterygoid lamina for second H shaped steel (5) are fixed completely in guide rail (3), and wherein two backing plates (4) welding are in the inboard of another pterygoid lamina and with the web symmetry, and backing plate (4) welding is at the inner wall of guide rail (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896430.4U CN210217777U (en) | 2019-06-14 | 2019-06-14 | Contractible joint for telescopic steel arch frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896430.4U CN210217777U (en) | 2019-06-14 | 2019-06-14 | Contractible joint for telescopic steel arch frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210217777U true CN210217777U (en) | 2020-03-31 |
Family
ID=69932454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920896430.4U Active CN210217777U (en) | 2019-06-14 | 2019-06-14 | Contractible joint for telescopic steel arch frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210217777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130945A (en) * | 2019-06-14 | 2019-08-16 | 中铁工程服务有限公司 | A kind of contractible joint for scalable steel arch-shelf |
-
2019
- 2019-06-14 CN CN201920896430.4U patent/CN210217777U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110130945A (en) * | 2019-06-14 | 2019-08-16 | 中铁工程服务有限公司 | A kind of contractible joint for scalable steel arch-shelf |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7735879B2 (en) | Sucker rod connection with improved fatigue resistance, formed by applying diametrical interference to reduce axial interference | |
| CN110130945A (en) | A kind of contractible joint for scalable steel arch-shelf | |
| CN210217777U (en) | Contractible joint for telescopic steel arch frame | |
| CN211456627U (en) | Compression type strain clamp | |
| WO2021082409A1 (en) | U-shaped steel support frame, and method for controlling surrounding rock of roadway by means of staged active loading | |
| CN210262511U (en) | Steel rail connecting and fastening device | |
| US11199091B2 (en) | Cageway connecting device and connecting method thereof | |
| CN104452871A (en) | Excavator bucket tooth of improved structure | |
| CN113529980B (en) | Connect stable prefabricated wall body | |
| CN214564529U (en) | Mounting structure of guide rail assembly on car sliding door | |
| CN105442719A (en) | Steel pipe filling concrete type fishbone core material buckling restrained brace | |
| CN107386677B (en) | Steel structure multi-section general assembly type reinforcing device and use method thereof | |
| CN106122265A (en) | A kind of spliced guide rail of wear-resisting type | |
| CN211202056U (en) | Aluminum alloy channel and mounting structure thereof | |
| CN111535508A (en) | Steel bar connecting device | |
| CN204142561U (en) | A kind of Hopkinson pull rod being applicable to lath test specimen | |
| CN211171948U (en) | Square pile end plate butt joint connection structure | |
| CN220846881U (en) | Insulated joint and track | |
| CN209584485U (en) | Temple connecting elements | |
| CN112523352A (en) | Steel sleeve type square tube steel column and I-shaped steel beam assembly joint and construction method | |
| CN215481968U (en) | Shield constructs construction assembled sleeper | |
| CN110847939A (en) | Steel arch frame joint | |
| CN216110664U (en) | Injection head clamping device | |
| CN219364955U (en) | Connection structure of concrete truss and floor | |
| CN212427564U (en) | H-shaped steel connecting piece |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |