CN203145953U - Tunnel portal earth-retaining device and pedestrian underpass construction system - Google Patents
Tunnel portal earth-retaining device and pedestrian underpass construction system Download PDFInfo
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- CN203145953U CN203145953U CN2012207436450U CN201220743645U CN203145953U CN 203145953 U CN203145953 U CN 203145953U CN 2012207436450 U CN2012207436450 U CN 2012207436450U CN 201220743645 U CN201220743645 U CN 201220743645U CN 203145953 U CN203145953 U CN 203145953U
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Abstract
The utility model discloses a tunnel portal earth-retaining device and a pedestrian underpass construction system. The tunnel portal earth-retaining device is used for performing construction of a pedestrian underpass by a push bench and a pipe joint, and comprises an upper embedded steel plate arranged at the upper end of the inner side of a tunnel portal and a lower embedded steel plate arranged at the lower end of the inner side of the tunnel portal; a plurality of vertical section steels are welded between the upper embedded steel plate and the lower embedded steel plate; each two adjacent vertical section steels are connected through horizontal section steels by means of welding; and a plurality of square holes in the vertical direction are formed between each vertical section steel and the corresponding horizontal section steel. In construction, the square holes are used for the pipe joint and the push bench to penetrate through. The vertical section steels and the horizontal section steels are used for substituting for H-section steels, further the pipe joint penetrates through the vertical section steels and the horizontal section steels to be driven into earth, and accordingly earth can be retained, and shortcomings caused by large-area gas cutting of the section steels can be avoided. The tunnel portal earth-retaining device and the pedestrian underpass construction system have the advantages that construction efficiency is improved, construction difficulty is lowered, and construction cost is saved.
Description
Technical field
The utility model relates to the realm of building construction, relates in particular to a kind of construction of underground pedestrian passageway.
Background technology
Carry out at present the general job practices that adopts non-excavation of construction of walkway below road, railway, it can be constructed under the situation of not blocking traffic.Specifically be at first to do two foundation ditches at road or railway both sides, with rectangle unit head and back tube coupling, be placed in the foundation ditch, unit head cuts earth preceding, the after-applied thrust of tube coupling makes unit head and tube coupling stretch the foundation ditch that leads to the opposite forward, and so circulation makes tube coupling be covered with whole passage, replace whole tube coupling with concrete box culvert at last, form the walkway.
In practice of construction, face down from ground and dig the dark 8m～10m of foundation ditch, put push-bench and tube coupling is constructed, in order not allow earth landslide and infiltration that H shaped steel will be inserted, when push-bench advances around foundation ditch, the retaining soil type steel that is positioned at the propelling front end face must cut off several times, can allow push-bench tunnel.The cross section of whole passage is pressed 13.62m х 7.6m and is calculated, and the weight that need cut off shaped steel is 87000kg, and owing to the concrete of shaped steel and bracing of foundation pit is close to, relatively more difficult when implementing gas cutting, prolonged the duration of construction greatly.
The utility model content
The technical problems to be solved in the utility model provides a kind of large tracts of land gas cutting shaped steel of avoiding, so improve efficiency of construction, reduced difficulty of construction, the portal of saving construction cost keeps off native device and underground pedestrian passageway construction system.
In order to solve this technical problem, the utility model provides a kind of portal to keep off native device, be used for using push-bench and tube coupling to carry out the construction of underground pedestrian passageway, comprise the last pre-embedded steel slab of being located at the door opening inner top side and the following pre-embedded steel slab of lower end, pre-embedded steel slab and the described vertical shaped steel that is welded with some vertical settings down between the pre-embedded steel slab on described, be welded to connect by horizontally disposed horizontal shaped steel between two adjacent vertical shaped steel, form the square hole that some vertical directions arrange between described vertical shaped steel and the described horizontal shaped steel, when construction, described square hole passes for described tube coupling and push-bench.
When not constructing, in the described square hole plate is installed.
Described plate is connected with earth with press strip by bolt.
Described plate is light material.
The utility model also provides a kind of underground pedestrian passageway construction system, be included in two foundation ditches that the road both sides arrange, be used for connecting the door opening of waiting to dig earth, described door opening is positioned at described foundation ditch, wherein constructs for described push-bench in the foundation ditch of a side, comprise also that the utility model provides portal keep off native device.
The underground pedestrian passageway construction system that the utility model provides also comprises concrete box culvert, in order to replace the tube coupling in the earth, forms underground pedestrian passageway.
The underground pedestrian passageway construction system that the utility model provides also comprises the top, back, and described tube coupling is connected with other box culverts by top, described back after passing earth.
The vertical shaped steel of the utility model utilization and horizontal shaped steel have replaced H shaped steel, and then tube coupling passed vertical shaped steel and horizontal shaped steel, head in the earth, can realize keeping off the effect of soil, the drawback that can also avoid large tracts of land gas cutting shaped steel to bring, so provide a kind of and improved efficiency of construction, reduced difficulty of construction, the portal of saving construction cost keeps off native device and underground pedestrian passageway construction system.
Description of drawings
Fig. 1 is the structural representation of the underground pedestrian passageway construction system that provides of the utility model one embodiment;
Fig. 2 is the A-A schematic cross-section of Fig. 1 of the utility model one embodiment;
Fig. 3 is the B-B schematic cross-section of Fig. 2 of the utility model one embodiment;
Among the figure, 1-laterally shaped steel; 2-press strip; 3-vertically shaped steel; 4-push-bench; 5-foundation ditch; 6-portal keeps off native device; 7-upward pre-embedded steel slab, 8-retaining soil type steel; 9-road; 10-tube coupling; 11-bolt; 12-box culvert; Top, 13-back; 14-following pre-embedded steel slab; 15-plate.
The specific embodiment
The portal that the utility model is provided below with reference to Fig. 1 to Fig. 3 keeps off native device and the underground pedestrian passageway construction system is described in detail, it is the utility model one optional embodiment, can think that those skilled in the art can make amendment to it in not revising scope sound in content of the present utility model and polishes according to known general knowledge.
Please refer to Fig. 2, and in conjunction with Fig. 1 and Fig. 3, present embodiment provides a kind of portal to keep off native device, be used for using push-bench 4 and tube coupling 10 to carry out the construction of underground pedestrian passageway, comprise the last pre-embedded steel slab 7 of being located at the door opening inner top side and the following pre-embedded steel slab 14 of lower end, pre-embedded steel slab 7 and the described vertical shaped steel 3 that is welded with some vertical settings down between the pre-embedded steel slab 14 on described, be welded to connect by horizontally disposed horizontal shaped steel 1 between two adjacent vertical shaped steel 3, form the square hole that some vertical directions arrange between described vertical shaped steel 3 and the described horizontal shaped steel 1, when construction, be that push-bench 4 is when tunneling, described square hole passes for described tube coupling 10 and push-bench 4, the more important thing is the effect of having played retaining soil well.Push-bench in the present embodiment is the rectangular top pipe machine.
The vertical shaped steel 3 of present embodiment utilization and horizontal shaped steel 1 have replaced H shaped steel, and then tube coupling 10 passed vertical shaped steel 3 and horizontal shaped steel 1, head in the earth, can realize keeping off the effect of soil, the drawback that can also avoid large tracts of land gas cutting shaped steel to bring, so provide a kind of and improved efficiency of construction, reduced difficulty of construction, the portal of saving construction cost keeps off native device and underground pedestrian passageway construction system.
Please refer to Fig. 3, and in conjunction with Fig. 1, when not constructing, plate 15 is installed in the described square hole.Described plate 15 is connected with earth with press strip 2 by bolt 11.Described plate 15 is light material.Plate 15 is detachably reused, easy construction.
Please refer to Fig. 1, present embodiment also provides a kind of underground pedestrian passageway construction system, be included in two foundation ditches 5 that road 9 both sides arrange, be used for connecting the door opening of waiting to dig earth, described door opening is positioned at described foundation ditch 5, wherein constructs for described push-bench 4 in the foundation ditch of a side, comprise also that present embodiment provides portal keep off native device 6.
The underground pedestrian passageway construction system that present embodiment provides also comprises the concrete box culvert (not shown), in order to replace the tube coupling 10 in the earth, forms underground pedestrian passageway.
The underground pedestrian passageway construction system that present embodiment provides also comprises back top 13, and described tube coupling 10 passes behind the earth by top, described back 13 and is connected with other box culverts 12.
Please refer to Fig. 1, and in conjunction with Fig. 2,3, present embodiment also provides a kind of underground pedestrian passageway job practices, the portal that has adopted present embodiment to provide keeps off native device, comprise the steps: S01: remove described plate 15, utilize described push-bench 4 and tube coupling 10 to carry out cutting and the driving of earth, described tube coupling 10 is passed described square hole jacking earth, in described tube coupling 10 complete jacking earth;
S02: the horizontal shaped steel 1 or the vertical shaped steel 3 that cut off correspondence position, namely cut off the parts transversely shaped steel 1 or the vertical shaped steel 3 that hinder described push-bench 4 and tube coupling 10 jackings, utilize described push-bench 4 and tube coupling 10 to carry out cutting and the driving of earth, in described tube coupling 10 jacking earth; Can be understood as, in the present embodiment, in order to make tube coupling 10 jacking earth as much as possible, the laterally jacking of shaped steel 1 or vertical shaped steel 3 meeting obstruction tube couplings 10 sometimes, at this moment, the horizontal shaped steel 1 by cutting off correspondence position or vertical shaped steel 3 make that tube coupling 10 can the jacking earth.Then, horizontal shaped steel 1 or vertical shaped steel 3 and the tube coupling welding of having finished construction with remainder make and keep off unlikely weakening of native effect.
S03: repeat the step of S01 and S02, with in the complete jacking earth of other tube couplings, take earth until described tube coupling successively;
S04: utilize a concrete box culvert to replace all tube couplings, form underground pedestrian passageway.
After whole completions, remaining shaped steel can be removed, select the shaped steel that can reuse, in order in follow-up construction, use, play the effect of saving cost.
Claims (4)
1. a portal keeps off native device, be used for using push-bench and tube coupling to carry out the construction of underground pedestrian passageway, comprise the last pre-embedded steel slab of being located at the door opening inner top side and the following pre-embedded steel slab of lower end, it is characterized in that: pre-embedded steel slab and the described vertical shaped steel that is welded with some vertical settings down between the pre-embedded steel slab on described, be welded to connect by horizontally disposed horizontal shaped steel between two adjacent vertical shaped steel, form the square hole that some vertical directions arrange between described vertical shaped steel and the described horizontal shaped steel, when construction, described square hole passes for described tube coupling and push-bench, when not constructing, in the described square hole plate is installed.
2. portal as claimed in claim 1 keeps off native device, it is characterized in that: described plate is connected with earth with press strip by bolt.
3. underground pedestrian passageway construction system, be included in two foundation ditches that the road both sides arrange, be used for connecting the door opening of waiting to dig earth, described door opening is positioned at described foundation ditch, wherein construct for described push-bench in the foundation ditch of a side, it is characterized in that: comprise that also portal as claimed in claim 1 or 2 keeps off native device.
4. underground pedestrian passageway construction system as claimed in claim 3 is characterized in that: also comprise the top, back, described tube coupling is connected with other box culverts by top, described back after passing earth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207436450U CN203145953U (en) | 2012-12-29 | 2012-12-29 | Tunnel portal earth-retaining device and pedestrian underpass construction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207436450U CN203145953U (en) | 2012-12-29 | 2012-12-29 | Tunnel portal earth-retaining device and pedestrian underpass construction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203145953U true CN203145953U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012207436450U Expired - Fee Related CN203145953U (en) | 2012-12-29 | 2012-12-29 | Tunnel portal earth-retaining device and pedestrian underpass construction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075162A (en) * | 2012-12-29 | 2013-05-01 | 上海市机械施工有限公司 | Tunnel portal earth retaining device as well as underground pedestrian passageway construction system and method |
-
2012
- 2012-12-29 CN CN2012207436450U patent/CN203145953U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075162A (en) * | 2012-12-29 | 2013-05-01 | 上海市机械施工有限公司 | Tunnel portal earth retaining device as well as underground pedestrian passageway construction system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20161229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |