CN204960951U - Tunnel is a steel bow member transverse connection device for preliminary bracing - Google Patents
Tunnel is a steel bow member transverse connection device for preliminary bracing Download PDFInfo
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- CN204960951U CN204960951U CN201520644138.5U CN201520644138U CN204960951U CN 204960951 U CN204960951 U CN 204960951U CN 201520644138 U CN201520644138 U CN 201520644138U CN 204960951 U CN204960951 U CN 204960951U
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Abstract
The utility model belongs to the steel bow member is installed and connection construction field each other in the tunnel excavation preliminary bracing work progress, concretely relates to tunnel is a steel bow member transverse connection device for preliminary bracing, the utility model discloses a solve special operating modes such as gas tunnel the steel bow member connect fixed problem, strut the quality for the whole that improves the steel bow member simultaneously, provide a tunnel is a steel bow member transverse connection device for preliminary bracing, including connecting I -steel and a plurality of connecting plate, connect the I -steel and locate between the two adjacent steel bow members, in the notch at I -steel both ends is located to the connecting plate, each connecting plate pass through the bolt respectively with steel bow member body, is connected the web connection of I -steel. This connecting device has stopped the welding work progress in the hole, has solved the limited problem of connected mode under the special operating mode such as gas tunnel, and simultaneously, the bolt connection who adopts has improved the the stress effect of steel bow member, has guaranteed the intensity and the construction quality that connect.
Description
Technical field
The utility model belongs to steel arch-shelf in tunnel excavation preliminary bracing work progress and installs and connection construction field each other, is specifically related to cross-connecting apparatus between a kind of Tunnel steel arch-shelf.
Background technology
In Tunnel process, especially some weak surrounding rocks, gas tunnel, because Surrounding Rock Strength is low, distortion large, many employing steel arch-shelf active support schemes in preliminary bracing.In later stage tunnel surrounding stresses re-distribution process, steel arch-shelf and sprayed mortar bear sizable pressure from surrounding rock, the locations such as indivedual Swelling Rock, fault belt, the deflection of country rock is quite large, easy generation landslide, the prominent disaster such as mud, large deformation, preliminary bracing is easy to be emptied behind, and cause respective regions supporting to occur supporting vacancy, bracing members easily produces large displacement; Simultaneously the landslide body in these regions, large deformation body produce the force component of horizontal direction, and the unstability that also easily occurs collapsing, the phenomenon such as to topple, bring safely great hidden danger and threat to constructing tunnel and operating personnel.
For the problems referred to above, most way adopting between adjacent steel bow member welding H-bar or be welded to connect reinforcing bar in current tunnel steel arch frame work progress, to guarantee supporting & stablizing and the coordinative role of steel arch-shelf.These ways also create good effect in some tunnels.But in work progress, also expose some problems, such as owing to being adopt welding manner to connect at the scene, in tunnel, weld job environment is comparatively severe, welding quality is not high, and when connecting i iron near country rock face, due to working space restriction, often there is solder skip, welding the phenomenons such as not full, cause lateral connection of low quality, the integer support of steel arch-shelf fails to play its maximum efficiency.Moreover, because weld job needs to occupy the longer activity duration in tunnel, comprise weld preparation, connector cutting etc., indirectly extend the aided process time in tunnel, affect Tunnel Construction Schedule.3rd, owing to relating to fire operation, bring certain hidden danger to tunnel safety, especially in gas tunnel construction, Site Welding is prohibited to apply, and the connection of steel arch-shelf horizontal line can be limited to use, also just reduce the quality of Tunnel, cause certain hidden danger to construction safety.
Summary of the invention
The utility model is connected and fixed problem in order to the steel arch-shelf solving the special operation conditions such as gas tunnel, simultaneously in order to improve the integer support quality of steel arch-shelf, provides cross-connecting apparatus between a kind of Tunnel steel arch-shelf.
The utility model adopts following technical scheme:
Cross-connecting apparatus between a kind of Tunnel steel arch-shelf, comprise and connect i iron and some junction plates, described i iron is located between adjacent two steel arch-shelf, junction plate be located at connect i iron two ends notch in, each junction plate is connected with steel arch-shelf body, the web that is connected i iron respectively by bolt.
Described junction plate is L-type, and the long limit of junction plate and minor face all have some connecting holes, and long limit connects with the web being connected i iron, and minor face is connected with steel arch-shelf body.
The width of described junction plate is less than the width of rebate connecting i iron, and the short height of junction plate is less than 1/2 of the depth of rebate of steel arch-shelf i iron.
The utility model has following beneficial effect:
1, the utility model utilizes connection i iron to be connected adjacent two steel arch-shelf with junction plate, for full bolt or part bolt connecting mode, can play between opposing steel arch-shelf and extrude, also stretching action each other can be resisted, compared with former traditional pure welding manner, the scope of its resistance to deformation and destruction increases to some extent, improves the overall stressed effect of steel arch-shelf, ensure that intensity and the construction quality of connection;
2, connect i iron to carry out outside hole with the connection procedure (bolt is connected or welds) of junction plate, only carry out bolt in tunnel to be connected and fixed, stop the welding procedure in hole, solve the problem that connected mode under the special operation conditions such as gas tunnel is limited, widen the scope of application of cross-connecting apparatus between steel arch-shelf;
3, adopt the linkage form of i iron-junction plate, adopt in welding manner connection procedure before changing, solid near country rock face i iron junction plate not prison welding, or the situation of solder skip, quality of connection is guaranteed;
4, the connection of linkage and steel arch-shelf adopts field-installed mode, effectively can improve construction efficiency;
5, the spacing connecting i iron makes in strict accordance with design steel arch-shelf interval, effectively can ensure erected on site steel arch-shelf spacing, guarantee that preliminary bracing applies in strict accordance with design pitch;
6, this type of attachment making, install all according to standardization, programmed operation, it becomes more meticulous, standardized work degree is high, is suitable for promoting the use of in similar tunneling operation.
Accompanying drawing explanation
Fig. 1 is Construction State figure of the present utility model;
Fig. 2 is the lateral view of Fig. 1;
Fig. 3,4,5 is the three-view diagram of junction plate;
In figure: 1-steel arch-shelf, 2-connect i iron, 3-junction plate;
The long limit of 31-, 32-minor face, 33-connecting hole.
Detailed description of the invention
By reference to the accompanying drawings, detailed description of the invention of the present utility model is described further:
Cross-connecting apparatus between Tunnel steel arch-shelf as shown in Figure 1, 2, comprise and connect i iron 2 and some junction plates 3, described connection i iron 2 is located between adjacent two steel arch-shelf 1, junction plate 3 be located at connect i iron 2 two ends notch in, each junction plate 3 is connected with steel arch-shelf 1 body, the web that is connected i iron 2 respectively by bolt.It can thus be appreciated that every section of i iron should connect four connectors, and each connector is located in the notch at i iron two ends respectively.
As Fig. 3, 4, shown in 5, described junction plate 3 general employing thickness is that the steel plate of 10mm is made, Cutting Length is 15 ~ 20mm, its width should be less than the width of rebate connecting i iron 2, namely the height (two wing plate distances) of i iron is less than, connect in the notch making junction plate can be positioned over i iron, then utilize punching machine by the steel plate rolling l-shaped after cutting, the long limit of L-type junction plate and minor face all have bolt connecting hole, its long limit connects with the web being connected i iron 2, minor face is connected with steel arch-shelf body, and the height of minor face should be less than the depth of rebate of i iron, the junction plate after installing is made to be placed in the groove of i iron completely, prevent because projective structure interferes other installation components, as shown in Figure 2.
In practice of construction process, first the scope of operation is transported to after adopting bolt to be connected with the web at i iron two ends respectively on the long limit of four L-type junction plates outside hole, then two junction plates of this connection i iron one end are connected with the steel arch-shelf set up by its minor face, after excavating, follow-up adjacent steel arch-shelf is carried out frame stand, and two junction plates of the aforementioned connection i iron other end are connected with the steel arch-shelf of rear erection by its minor face.
Because L-type junction plate and the connection procedure being connected i iron carry out outside hole, except with bolts, the mode of surrounding fillet welding can also be adopted.
Claims (3)
1. cross-connecting apparatus between a Tunnel steel arch-shelf, it is characterized in that: comprise and connect i iron (2) and some junction plates (3), described connection i iron (2) is located between adjacent two steel arch-shelf (1), junction plate (3) be located at connect i iron (2) two ends notch in, each junction plate (3) is connected with steel arch-shelf (1) body, the web that is connected i iron (2) respectively by bolt.
2. cross-connecting apparatus between Tunnel steel arch-shelf according to claim 1, it is characterized in that: described junction plate (3) is L-type, the long limit (31) of junction plate (3) and minor face (32) all have some connecting holes (33), long limit (31) connects with the web being connected i iron (2), and minor face (32) is connected with steel arch-shelf (1) body.
3. cross-connecting apparatus between Tunnel steel arch-shelf according to claim 2, it is characterized in that: the width of described junction plate (3) is less than the width of rebate connecting i iron (2), the minor face (32) of junction plate (3) is highly less than the depth of rebate connecting i iron (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644138.5U CN204960951U (en) | 2015-08-25 | 2015-08-25 | Tunnel is a steel bow member transverse connection device for preliminary bracing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520644138.5U CN204960951U (en) | 2015-08-25 | 2015-08-25 | Tunnel is a steel bow member transverse connection device for preliminary bracing |
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| CN204960951U true CN204960951U (en) | 2016-01-13 |
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| CN201520644138.5U Active CN204960951U (en) | 2015-08-25 | 2015-08-25 | Tunnel is a steel bow member transverse connection device for preliminary bracing |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971641A (en) * | 2016-07-08 | 2016-09-28 | 山东大学 | Mechanical construction and fast location longitudinal connecting device for tunnel confined concrete arch supports |
| CN109404006A (en) * | 2018-11-13 | 2019-03-01 | 西安科技大学 | A kind of assembled preliminary bracing |
| CN110159315A (en) * | 2019-05-07 | 2019-08-23 | 山东大学 | The semi-active connection tunnel of assembled and method suitable for passing through fault belt |
| CN111022084A (en) * | 2019-11-19 | 2020-04-17 | 长安大学 | Large-section loess tunnel excavation primary support arch frame single truss and method |
| CN111058873A (en) * | 2020-01-15 | 2020-04-24 | 中国石油大学(华东) | Primary support part supporting device and method for weak surrounding rock large-section tunnel |
| CN111577336A (en) * | 2020-05-28 | 2020-08-25 | 成都理工大学 | Section steel and sprayed concrete combined stiff structure tunnel supporting system and construction method |
| CN111706368A (en) * | 2020-06-30 | 2020-09-25 | 中铁二院工程集团有限责任公司 | Tunnel inner section steel frame longitudinal connection structure and construction method |
| CN111828053A (en) * | 2020-08-17 | 2020-10-27 | 成都理工大学 | Steel pipe concrete and sprayed concrete rigid combined structure tunnel supporting system and construction method |
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2015
- 2015-08-25 CN CN201520644138.5U patent/CN204960951U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105971641A (en) * | 2016-07-08 | 2016-09-28 | 山东大学 | Mechanical construction and fast location longitudinal connecting device for tunnel confined concrete arch supports |
| CN105971641B (en) * | 2016-07-08 | 2018-06-22 | 山东大学 | A kind of tunnel confined concrete arch mechanized construction quickly positions one-above-the-other layout |
| CN109404006A (en) * | 2018-11-13 | 2019-03-01 | 西安科技大学 | A kind of assembled preliminary bracing |
| CN110159315A (en) * | 2019-05-07 | 2019-08-23 | 山东大学 | The semi-active connection tunnel of assembled and method suitable for passing through fault belt |
| CN111022084A (en) * | 2019-11-19 | 2020-04-17 | 长安大学 | Large-section loess tunnel excavation primary support arch frame single truss and method |
| CN111022084B (en) * | 2019-11-19 | 2024-04-26 | 长安大学 | Single arch truss of primary support for excavating large-section loess tunnel and method |
| CN111058873A (en) * | 2020-01-15 | 2020-04-24 | 中国石油大学(华东) | Primary support part supporting device and method for weak surrounding rock large-section tunnel |
| CN111058873B (en) * | 2020-01-15 | 2021-07-13 | 中国石油大学(华东) | Primary support part supporting device and method for weak surrounding rock large-section tunnel |
| CN111577336A (en) * | 2020-05-28 | 2020-08-25 | 成都理工大学 | Section steel and sprayed concrete combined stiff structure tunnel supporting system and construction method |
| CN111706368A (en) * | 2020-06-30 | 2020-09-25 | 中铁二院工程集团有限责任公司 | Tunnel inner section steel frame longitudinal connection structure and construction method |
| CN111828053A (en) * | 2020-08-17 | 2020-10-27 | 成都理工大学 | Steel pipe concrete and sprayed concrete rigid combined structure tunnel supporting system and construction method |
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