CN202851011U - Existing grate and novel grate connecting system in tunnel construction - Google Patents
Existing grate and novel grate connecting system in tunnel construction Download PDFInfo
- Publication number
- CN202851011U CN202851011U CN201220551759.5U CN201220551759U CN202851011U CN 202851011 U CN202851011 U CN 202851011U CN 201220551759 U CN201220551759 U CN 201220551759U CN 202851011 U CN202851011 U CN 202851011U
- Authority
- CN
- China
- Prior art keywords
- grid
- grate
- new
- steel plate
- existing
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses an existing grate and novel grate connecting system in tunnel construction. The existing grate and novel grate connecting system in the tunnel construction comprises an existing grate and a novel grate and is characterized in that a reserved steel plate is arranged at the connecting position of the existing grate and the novel grate and is in welding connection with two main bars of the existing grate. Angle steel at the connecting position of the novel grate is malposed with and welded and fixed with the reserved steel plate. A thin steel plate is filled and welded in a gap formed by the fact that the angle steel at the connecting position of the novel grate cannot be completely adhered to the reserved steel plate. The width and the length of the reserved steel plate are confirmed according to the size of the outer edge of the angle steel at the connecting position of the novel grate and different widths of the existing grate and the novel grate. Original bolt connection is replaced by grate welding connection, the initial support closing speed of the grates are high, the settlement deformation after the grates are closed is small, and safe and stable grate construction is effectively guaranteed.
Description
Technical field
The utility model relates to the realm of building construction; Relate in particular to existing grid and new grating connection system in a kind of constructing tunnel.
Background technology
The basic principle of the New Austrian Tunneling Method in the constructing tunnel is to utilize the whole load of steel grating and the construction of sprayed mortar shared initial stage, run into the larger condition of construction of section, large section is divided into several little pilot tunnels, the group hole effect that produces during simultaneously for fear of excavation, each pilot tunnel has different sequence of excavations.The pilot tunnel of excavation will have been reserved steel plate and bolt hole first, and the pilot tunnel grid of rear excavation will dock fully with reserving steel plate and bolt hole, and with bolt tightening, can guarantee that just new and old grid junction node is reliable and stable.
And in the practice of construction process, because of each pilot drive asynchronism(-nization), and pilot drive level, vertical direction accuracy are difficult to accurate control, thereby have caused fully correspondence of new and old grid connecting portion bolt hole, and inconsistent phenomenon can appear in 4 bolts that each connecting portion should connect; The old bolt hole that has causes prepared screw-bolt hole to be plugged because of the sprayed mortar sealing, and new grid bolt can't pass existing grid bolt hole, causes new and old grid effectively to connect by former design bolt.The New Austrian Tunneling Method construction requirement is finished the sealing of grid connection and sprayed mortar as early as possible simultaneously, prevents that the face soil body from caving in.
The utility model content
Technical problem to be solved in the utility model provides existing grid and new grating connection system in a kind of constructing tunnel, and the connected mode construction of adopting existing grid steel plate and new grid angle steel facade to weld has solved the problems referred to above.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
Existing grid and new grating connection system in a kind of constructing tunnel comprise existing grid and new grid, and it is characterized in that: described existing grid is provided with the reservation steel plate with the junction of new grid, and two main muscle of this reservation steel plate and existing grid are welded to connect; The connecting portion angle steel of new grid is welded and fixed with the dislocation of reservation steel plate.
The connecting portion angle steel of described new grid and reserve steel plate can not fully closely connected slit between filling steel sheet and welding.
Each attachment weld of described welding is fixed 3 points at least.
The elongated setting of two main muscle joint weld seams of described reservation steel plate and existing grid.
Described weld width is not less than 0.8d, and weld bead height is not less than 0.3d.
2 eyelets are opened on respectively in described reservation steel plate both sides, and the aperture position on the connecting portion angle steel of eyelet position and new grid is corresponding.
The width of described reservation steel plate and length are determined according to the outward flange size of the connecting portion angle steel of new grid and the different in width of existing grid and new grid.The minimum lap width of described connecting portion angle steel and reservation steel plate is not less than half of angle steel width.
The beneficial effects of the utility model:
The utility model grid is welded to connect and replaces original bolt to connect, and it is fast that grid just props up speed in a closed circuit, and sedimentation and deformation is little after the grid sealing, has effectively guaranteed the safety and stability of grid construction.
After the new and old connecting portion of grid is welded to connect, jointly bear the country rock whole load with sprayed mortar, during because of construction its surrounding soil is produced disturbance, cause the existing structure unbalance stress, the redistribution of country rock resistance to shear of soil.The direction of top Load Transfer has three: middle vertical supporting, arch angle, both sides and existing grid are welded to connect the place.The place's of being welded to connect weld seam mainly bears top soil body shearing force and is transmitted to the arch angular position by the grid top, and the moment of flexure of trend changes downwards.According to the construction practice examining, the grid deformation is controlled, and bonding strength can meet the demands.
New and old grid is welded to connect the superiority of technology:
1, the bolt connection is subjected to limitation of construction, can't guarantee that 4 bolts all connect, and grid intensity can't guarantee.On this basis, increase welded seam and can guarantee firm and reliable connection.
2, adopt carbon-dioxide arc welding, be no more than 10 minutes weld interval, reduced grid off-period.
3, the top load is directly reached Gong Jiaochu, through the test structure stabilization.
Description of drawings
The new grid angle steel of Fig. 1 the utility model misplaces to be connected with existing grid steel plate and cuts open figure
The new grid angle steel of Fig. 2 the utility model misplaces to be connected with existing grid steel plate and cuts open figure
The new grid angle steel of Fig. 3 the utility model is connected lateral view with existing grid steel plate dislocation
Among the figure, 1-reserves steel plate, 2-connecting portion angle steel, 3-master's muscle, 4-eyelet, the existing grid of 5-, the new grid of 6-
The specific embodiment
Shown in Fig. 1-3, existing grid 5 and new grid 6 connected systems in a kind of constructing tunnel, comprise existing grid 5 and new grid 6, it is characterized in that: described existing grid 5 is provided with reservation steel plate 1 with the junction of new grid 6, and this reservation steel plate 1 is welded to connect with two main muscle 3 of existing grid 5; The connecting portion angle steel 2 of new grid 6 is welded and fixed with 1 dislocation of reservation steel plate.
The connecting portion angle steel 2 of described new grid 6 and reserve steel plate 1 can not fully closely connected slit between filling steel sheet and welding.
Each attachment weld of described welding is fixed 3 points at least.
The elongated setting of two main muscle 3 joint weld seams of described reservation steel plate 1 and existing grid 5.
Described weld width is not less than 0.8d, and weld bead height is not less than 0.3d.
2 eyelets 4 are opened on respectively in described reservation steel plate 1 both sides, and the aperture position on the connecting portion angle steel 2 of eyelet 4 positions and new grid 6 is corresponding.
The width of described reservation steel plate 1 and length are determined according to the outward flange size of the connecting portion angle steel 2 of new grid and the different in width of existing grid 5 and new grid 6.What the connecting portion of existing grid 5 adopted when design is 10mm to be set reserve steel plate, be generally grid master muscle clear span 245mm, reserve steel plate 1 and be of a size of 520mm * 290mm, it is in order to guarantee that two 125mm connecting portion angle steel 2 can dock complete with reservation steel plate 1 that length is set to 520mm.Connecting portion angle steel 2, fixing common the fixing of reservation steel plate 1 size, according to the site operation actual conditions, connecting portion angle steel 2 lap widths are different when just connecting.
The job practices that new and old grid is welded to connect:
(1) parallels stuff up a crack
After existing grid reservation steel plate excavation is exposed, should make its surfacing smooth to its surface is cleared up, how residual without sprayed mortar, spark bumps gradually when preventing from welding.
New grid connecting portion angle steel 2 drops on to be reserved on the steel plate, and can cause because its plane, locus are not corresponding connecting portion angle steel 2 and reserve steel plate can not be fully closely connected, and must adopt 5mm, 10mm steel plate this moment, and its place, slit is clogged, and it is connected closely.
(2) pre-fix
Behind the gap filling, utilize the electric welding machine electric welding to fix.Each attachment weld is fixed 3 points at least.
(3) carbon-dioxide arc welding
For guaranteeing its welding quality, adopt carbon-dioxide arc welding to connect.
Claims (8)
1. existing grid and new grating connection system in the constructing tunnel comprise existing grid and new grid, and it is characterized in that: described existing grid is provided with the reservation steel plate with the junction of new grid, and two main muscle of this reservation steel plate and existing grid are welded to connect; The connecting portion angle steel of new grid is welded and fixed with the dislocation of reservation steel plate.
2. existing grid and new grating connection system in the constructing tunnel as claimed in claim 1 is characterized in that: the connecting portion angle steel of described new grid with reserve steel plate can not fully closely connected slit between the filling steel sheet also weld.
3. existing grid and new grating connection system in the constructing tunnel as claimed in claim 2, it is characterized in that: each attachment weld of described welding is fixed 3 points at least.
4. existing grid and new grating connection system in the constructing tunnel as claimed in claim 1 or 2 is characterized in that: the elongated setting of two main muscle joint weld seams of described reservation steel plate and existing grid.
5. existing grid and new grating connection system in the constructing tunnel as claimed in claim 4, it is characterized in that: described weld width is not less than 0.8d, and weld bead height is not less than 0.3d.
6. existing grid and new grating connection system in the constructing tunnel as claimed in claim 1 is characterized in that: 2 eyelets are opened on respectively in described reservation steel plate both sides, and the aperture position on the connecting portion angle steel of eyelet position and new grid is corresponding.
7. existing grid and new grating connection system in the constructing tunnel as claimed in claim 1, it is characterized in that: the width of described reservation steel plate and length are determined according to the outward flange size of the connecting portion angle steel of new grid and the different in width of existing grid and new grid.
8. existing grid and new grating connection system in the constructing tunnel as claimed in claim 1 is characterized in that: described connecting portion angle steel and the minimum lap width of reserving steel plate are not less than half of angle steel width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220551759.5U CN202851011U (en) | 2012-10-26 | 2012-10-26 | Existing grate and novel grate connecting system in tunnel construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220551759.5U CN202851011U (en) | 2012-10-26 | 2012-10-26 | Existing grate and novel grate connecting system in tunnel construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851011U true CN202851011U (en) | 2013-04-03 |
Family
ID=47982221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220551759.5U Expired - Fee Related CN202851011U (en) | 2012-10-26 | 2012-10-26 | Existing grate and novel grate connecting system in tunnel construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851011U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306681A (en) * | 2013-06-20 | 2013-09-18 | 中铁十六局集团地铁工程有限公司 | Tunneling sector rotation construction method |
| CN106014457A (en) * | 2015-03-24 | 2016-10-12 | 中铁隆工程集团有限公司 | Connection application of L-shaped grille joint in tunnel initial supporting structure |
| CN108457679A (en) * | 2018-03-13 | 2018-08-28 | 中铁隧道局集团有限公司 | Grid steel frame, the assembled device of grid steel frame examination and grid steel frame production method |
| CN112483133A (en) * | 2020-11-26 | 2021-03-12 | 北京市政路桥股份有限公司 | Steel bar grating connecting structure for primary support structure of arch-connected underground excavated pipe gallery and construction method |
-
2012
- 2012-10-26 CN CN201220551759.5U patent/CN202851011U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306681A (en) * | 2013-06-20 | 2013-09-18 | 中铁十六局集团地铁工程有限公司 | Tunneling sector rotation construction method |
| CN103306681B (en) * | 2013-06-20 | 2015-09-09 | 中铁十六局集团地铁工程有限公司 | A kind of tunnel piercing sector rotation construction method |
| CN106014457A (en) * | 2015-03-24 | 2016-10-12 | 中铁隆工程集团有限公司 | Connection application of L-shaped grille joint in tunnel initial supporting structure |
| CN108457679A (en) * | 2018-03-13 | 2018-08-28 | 中铁隧道局集团有限公司 | Grid steel frame, the assembled device of grid steel frame examination and grid steel frame production method |
| CN108457679B (en) * | 2018-03-13 | 2024-05-14 | 中铁隧道局集团有限公司 | Grid steel frame, grid steel frame trial assembly device and grid steel frame manufacturing method |
| CN112483133A (en) * | 2020-11-26 | 2021-03-12 | 北京市政路桥股份有限公司 | Steel bar grating connecting structure for primary support structure of arch-connected underground excavated pipe gallery and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205036392U (en) | Tunnel preliminary bracing steel bow member lock foot anchor pad box for stock | |
| CN202851011U (en) | Existing grate and novel grate connecting system in tunnel construction | |
| CN102747736B (en) | Combination tool type inner bracing changing method | |
| CN106988750B (en) | Implementation mode of ultra-short-distance underpass of existing station of large-span interval tunnel | |
| CN103556749A (en) | Hanging flexible connection of precast concrete infill wall | |
| CN204983662U (en) | To drawing screw rod and steel pipe framed bent combination unilateral formwork device | |
| CN108691552B (en) | Big cross section shape of a hoof shield cutting receives construction method | |
| CN108979667B (en) | Penetrating ground crushed zone tunnel top bar interval wall construction method | |
| CN108915728B (en) | Tunnel arch wall preliminary bracing based on gantry type support invades limit and changes arch construction method | |
| CN110454190B (en) | Connecting structure for connecting monorail beam support and shield segment and construction method thereof | |
| CN102561197A (en) | Method for construction of stiff skeleton and banding of tower column rebars | |
| CN104295301B (en) | The construction method in a kind of shallow buried covered excavation cracked rock mass subway tunnel crosspoint | |
| CN110242305A (en) | A kind of inclined shaft applies the construction technique in main hole into single side heading method | |
| CN102410031B (en) | Underground space structure constructed by pile wall construction method | |
| CN104947681A (en) | Super large super deep basement ground pit construction method | |
| CN202659247U (en) | Back templates and combined steel die for tunnel inverted arch construction | |
| CN106481347B (en) | A kind of anti-internal water pressure composite shield section of jurisdiction | |
| CN106593483B (en) | A kind of construction method of the long anchor pole of Support System in Soft Rock Tunnels inverted arch | |
| CN204342309U (en) | Novel tower crane attached wall attachment lattice bracing frame auxiliary device | |
| CN105040810B (en) | Suitable for the connecting node of frame supported shear wall structure reverse construction | |
| CN103437779A (en) | Construction method for renovating tunnel lining water seeping damage | |
| CN104594388B (en) | A kind of advanced sealing pouring after settlement of sole plate | |
| CN208105293U (en) | A kind of precast lattice beam | |
| CN206319893U (en) | A kind of middle buried water stop positioning chassis steel end mould | |
| CN103615058B (en) | A kind of constraint steel plate construction of super high-rise steel plate concrete shear wall and construction method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: 3RD ENGINEERING CO., LTD. OF CHINA RAILWAY URBAN C Free format text: FORMER NAME: THE NO.6 ENGINEERING CO., LTD. OF CHINA RAILWAY 22TH BUREAU GROUP |
|
| CP03 | Change of name, title or address |
Address after: 300451 Tianjin Binhai New Area, Tanggu new North Road, No. 4668 Patentee after: 3RD ENGINEERING COMPANY LTD. OF CHINA RAILWAY URBAN CONSTRUCTION Group Patentee after: China Railway 22nd Bureau Group Co.,ltd. Address before: 150016, Heilongjiang, Nangang Province, Harbin District, 128 trees Street Patentee before: 6TH ENGINEERING CO LTD OF CHINA RAILWAY 22TH BUREAU Group Patentee before: China Railway 22nd Bureau Group Co.,ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20211026 |