CN211340371U - Under tunnel removes landing stage - Google Patents
Under tunnel removes landing stage Download PDFInfo
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- CN211340371U CN211340371U CN201922097973.2U CN201922097973U CN211340371U CN 211340371 U CN211340371 U CN 211340371U CN 201922097973 U CN201922097973 U CN 201922097973U CN 211340371 U CN211340371 U CN 211340371U
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Abstract
The utility model discloses a tunnel mobile trestle of underpass, including preceding access bridge, back access bridge and multiunit trestle unit, trestle unit includes main bridge, main bridge running gear and main bridge climbing mechanism, multiunit trestle unit series connection, and the main bridge of two adjacent trestle units is articulated through length face, and preceding access bridge connects in the length face department of head end trestle unit main bridge, and back access bridge sets up in the length face department of terminal trestle unit main bridge; the main bridge running mechanism and the main bridge jacking mechanism are arranged on the width surface of the main bridge. The utility model discloses can guarantee to build under the current condition of normal road and wear the tunnel.
Description
Technical Field
The utility model relates to a construction equipment for wearing tunnel down especially relates to a tunnel removes landing stage is worn down.
Background
With the development of economy, the quantity of social vehicles is more and more reserved, urban traffic congestion becomes a common phenomenon in China, the existing road cannot meet the requirements of people on working and living traffic traveling, and in order to solve the problem, a tunnel penetrating through the lower portion of the existing road is built to become an effective solution.
When the underpass tunnel is constructed, a foundation pit needs to be excavated under the existing road for construction operations such as tunnel lining, narrow temporary traffic channels can be isolated at two sides of a construction area in the tunnel construction period, the traffic passage of the road section is seriously influenced, the construction period of a construction unit is short, the construction pressure is high, and the quality control is not facilitated.
Some traffic jam road sections need to be built with a tunnel, and temporary passing lanes cannot be isolated due to the fact that the road is narrow, and at present, no feasible construction scheme exists and the temporary passing lanes cannot be built.
In the prior art, a plurality of tunnel mobile trestle structures are provided, and generally comprise a front approach bridge, a main bridge, a rear approach bridge, a travelling mechanism and a jacking mechanism; for example, Chinese patent publication No. 108343446A discloses a self-propelled lifting combined trestle for tunnel deep-buried ditch construction, published as 2018-07-31; the tire self-propelled multifunctional tunnel construction trestle disclosed by Chinese patent publication No. 107905804A is 2018-04-13; however, the existing tunnel mobile trestle is used for railway tunnel construction, and because the construction modes of a railway tunnel and a road underpass tunnel are completely different, the existing tunnel mobile trestle is not suitable for the construction of the road underpass tunnel.
Disclosure of Invention
An object of the utility model is to overcome the above-mentioned problem that prior art exists, provide a tunnel removal landing stage is worn down and construction method thereof. The utility model discloses can guarantee to build under the current condition of normal road and wear the tunnel.
In order to achieve the above object, the utility model adopts the following technical scheme:
the utility model provides a tunnel removes landing stage under wears which characterized in that: the bridge comprises a front approach bridge, a rear approach bridge and a plurality of groups of trestle units, wherein each trestle unit comprises a main bridge, a main bridge walking mechanism and a main bridge jacking mechanism; the main bridge running mechanism and the main bridge jacking mechanism are arranged on the width surface of the main bridge.
The surface of the joint of two adjacent main bridges is paved with a sliding steel plate, after a plurality of groups of trestle units are connected, a top surface formed by the combination of the front approach bridge, the plurality of main bridges connected in series, the sliding steel plate and the rear approach bridge forms a passing surface, and a construction area is formed below the main bridges.
The utility model discloses still include the side direction access bridge, the side direction access bridge sets up in length limit one side or both sides of passing through the face, sets up when one side, forms the face of passing through of turning left or the face of passing through of turning right, sets up when both sides, forms the face of passing through of turning left and the face of passing through of turning right.
One end of the sliding steel plate is fixed on a main bridge of one trestle unit, and the other end of the sliding steel plate is lapped on a main bridge of the next trestle unit.
The front approach bridge is 4 groups and hinged with the length surface of the main bridge of the head end trestle unit, 4 front approach bridge jacking oil cylinders of the front approach bridge are respectively hinged on the front approach bridge and the main bridge of the head end trestle unit at two ends.
The rear approach bridge is 2 groups and hinged with the length surface of the main bridge of the tail trestle unit, a rear approach bridge sliding sleeve is arranged on the rear approach bridge, and 4 groups of rear approach bridge traveling mechanisms are arranged in the rear approach bridge sliding sleeve.
The side direction approach bridge is 2 groups or 4 groups, forms the face of passing through of turning left or turning right when being 2 groups, and when being 4 groups, forms the face of passing through of turning left and the face of passing through of turning right, and every group is articulated with the width face both ends of arbitrary landing stage unit main bridge.
And two ends of each of the 4 rear approach bridge jacking oil cylinders of the rear approach bridge are respectively hinged to the rear approach bridge sliding sleeve and the rear approach bridge travelling mechanism.
The main bridges of the two adjacent trestle units are hinged through length surfaces and then fixed through bolts.
The trestle unit main bridge is characterized in that 4 main bridge sliding sleeves are arranged on the opposite sides of the two sides of the width surface of the main bridge, and 4 main bridge traveling mechanisms are respectively connected in the main bridge sliding sleeves in a sliding mode.
The main bridge jacking mechanism is of a plurality of groups, each group comprises 4 main bridge jacking oil cylinders, and two ends of each main bridge jacking oil cylinder are respectively hinged with the main bridge sliding sleeve and the main bridge travelling mechanism.
When the main bridge travelling mechanism travels, the main bridge travelling mechanism is supported on a track, and the track is erected on a crown beam poured after pile foundations on two sides of the underpass tunnel are constructed.
Adopt the utility model has the advantages of:
1. the utility model discloses the vertical main bridge that will have current trestle for railway tunnel structurally sets up to horizontal main bridge, and with a plurality of main bridge series connection, and through changing around the approach bridge hookup location and increase the side direction approach bridge will pass around changing to and control current, and running gear's position, tunnel under the construction under the current circumstances of normal road can be guaranteed to this structure, let the traffic pressure that the former mode of construction leads to obtain alleviating, the construction unit obtains eradicateing because the quality defect that the time limit for a project short leads to, especially those need repair tunnel and can not be repaired the contradiction is solved because of the highway section of place restriction.
2. Because the tunnel is worn to the part down there is the bend, the utility model discloses a landing stage of articulated series connection adopts sliding steel sheet overlap joint to cross the bend and pass in order to satisfy the landing stage between the landing stage unit.
3. Because the tunnel is worn to the part down has the slope, the utility model discloses every landing stage unit all is equipped with independent running gear, and this design can satisfy the traction force that the landing stage removed the needs.
4. The modular design is adopted, the installation is rapid, and the influence on traffic is reduced to the minimum.
Drawings
FIG. 1 is a schematic view of the construction layout of the present invention;
FIG. 2 is a top view of the straightway trestle of the present invention;
FIG. 3 is a top view of the trestle with the minimum curve segment of the present invention;
fig. 4 is a front view of the present invention;
fig. 5 is a side view of the present invention.
Labeled as: 1. the system comprises a front approach bridge, 2, a rear approach bridge, 3, a main bridge, 4, a main bridge traveling mechanism, 5, a main bridge jacking mechanism, 6, a sliding steel plate, 7, a front approach bridge jacking oil cylinder, 8, a rear approach bridge traveling mechanism, 9, a rear approach bridge jacking oil cylinder, 10, a bolt, 11, a rail, 12, a crown beam, 13, a lateral approach bridge, 14 and a trestle unit.
Detailed Description
Example 1
A tunnel moving trestle for underpass comprises a front trestle 1, a rear trestle 2 and a plurality of groups of trestle units 14, wherein each trestle unit 14 comprises a main bridge 3, a main bridge walking mechanism 4 and a main bridge jacking mechanism 5, the plurality of groups of trestle units 14 are connected in series, the main bridges 3 of two adjacent trestle units 14 are hinged through a length surface, the front trestle 1 is connected to the length surface of the main bridge of the trestle unit 14 at the head end, and the rear trestle 2 is arranged at the length surface of the main bridge of the trestle unit at the tail end; the main bridge traveling mechanism 4 and the main bridge jacking mechanism 5 are arranged on the width surface of the main bridge.
The surface of the joint of the two adjacent main bridges is paved with a sliding steel plate 6, after a plurality of groups of trestle units 14 are connected, a front approach bridge 1, a plurality of main bridges 3 connected in series, the sliding steel plate 6 and a rear approach bridge 2 are combined to form a passing surface, such as a passage for driving and pedestrians, and a construction area is formed below the plurality of main bridges 3 connected in series.
The utility model discloses still include side direction access bridge 13, side direction access bridge 13 sets up in length limit one side or both sides of passing through the face, sets up when one side, forms the face of passing through of turning left or the face of passing through of turning right, sets up when both sides, forms the face of passing through of turning left and the face of passing through of turning right.
One end of the sliding steel plate 6 is fixed on the main bridge 3 of one trestle unit 14, and the other end is lapped on the main bridge 3 of the next trestle unit 14.
The front approach bridge 1 is provided with 4 groups and is hinged with the length surface of the head end trestle unit main bridge 3, and each two ends of 4 front approach bridge jacking oil cylinders 7 of the front approach bridge 1 are respectively hinged on the front approach bridge 1 and the head end trestle unit main bridge 3.
The rear approach bridge 2 is 2 groups and is hinged with the length surface of the main bridge 3 of the tail end trestle unit, a rear approach bridge sliding sleeve is arranged on the rear approach bridge 2, and 4 groups of rear approach bridge traveling mechanisms 8 are arranged in the rear approach bridge sliding sleeve.
And 4 rear approach bridge jacking oil cylinders 9 of the rear approach bridge are respectively hinged to the rear approach bridge sliding sleeve and the rear approach bridge travelling mechanism 8 at two ends.
The lateral approach bridges 13 are 2 groups or 4 groups, a left-turn passing surface or a right-turn passing surface is formed when the lateral approach bridges are 2 groups, a left-turn passing surface and a right-turn passing surface are formed when the lateral approach bridges are 4 groups, and each group is hinged to two ends of the width surface of the main bridge of any trestle unit 14.
The main bridge 3 of the two adjacent trestle units 14 is hinged through a length surface and then fixed through a bolt 10.
The trestle unit 14 is provided with 4 main bridge sliding sleeves on two opposite sides of the width surface of the main bridge, and the 4 main bridge traveling mechanisms 4 are respectively connected in the main bridge sliding sleeves in a sliding manner.
The main bridge jacking mechanism 5 is of a plurality of groups, each group comprises 4 main bridge jacking oil cylinders, and two ends of each main bridge jacking oil cylinder are respectively hinged with a main bridge sliding sleeve and a main bridge travelling mechanism 8.
When the main bridge travelling mechanism 8 travels, the main bridge travelling mechanism is supported on the track 11, and the track 11 is erected on the crown beam 12 poured after the pile foundations on the two sides of the underpass tunnel are constructed.
A construction method of a mobile trestle for a downward tunnel comprises the following steps:
a. pre-laying a track on the top surface of the crown beam for trestle traveling and vehicle passing supporting;
b. mounting a trestle;
c. after the trestle is installed, performing construction operation below the trestle;
d. when the tunnel concrete lining strength of a construction section meets the vehicle passing requirement:
d1, removing the lateral approach bridge;
d2, jacking the front approach bridge jacking oil cylinder to lift the front approach bridge off the existing road surface;
d3, jacking a rear approach bridge jacking oil cylinder to lift the rear approach bridge so that the rear approach bridge travelling mechanism is supported on the top surface of the poured tunnel;
d4, lifting all the trestle units by a main bridge lifting oil cylinder so as to support the main bridge travelling mechanism on the track;
d5, starting a main bridge traveling mechanism, and traveling the trestle to the next circulating construction station;
d6, contracting the front approach bridge jacking oil cylinder to support the front end of the front approach bridge on the existing road surface;
d7, retracting the rear approach bridge jacking oil cylinder to lift the rear approach bridge walking mechanism away from the bottom surface, so that the front end of the rear approach bridge is supported on the top surface of the poured tunnel;
d8, retracting the main bridge jacking oil cylinder to lift the main bridge travelling mechanisms of all the trestle units away from the track, so that the support of each trestle unit is supported on the track;
d9, installing lateral approach bridges at two ends of the width surface of the trestle unit needing to pass left and right;
e. and after the trestle is erected, the road traffic is recovered, and the next circular tunnel construction is carried out below the trestle, and the steps are repeated until the tunnel construction is completed.
Example 2
The structure and method of the present invention will be further explained in the embodiment with reference to the drawings.
The utility model discloses a 14 serial-type removal trestles of multiunit trestle unit, this trestle locate current road surface on, at the current vehicle in trestle top, the tunnel construction is carried out to the trestle below.
The trestle comprises: 4 groups of front approach bridges 1 hinged in front of the head end main bridge; two ends of the front approach bridge jacking oil cylinders 7 are respectively hinged to the front approach bridge 1 and the main bridge 3; 2 groups of rear approach bridges 2 hinged behind the tail end main bridge; the lateral approach bridges 13 can be hinged at two ends of the width surface of any trestle unit 14; 4 groups of rear approach bridge traveling mechanisms 8 which are connected in a rear approach bridge sliding sleeve in a sliding way; 4 rear approach bridge jacking oil cylinders 9 are respectively hinged with the rear approach bridge sliding sleeve and the rear approach bridge travelling mechanism 8 at two ends of each of the two cylinders; a plurality of sets of trestle units 14; a plurality of pins 10 for hinging the trestle units; a plurality of groups of sliding steel plates 6, one end of each sliding steel plate is fixed on one trestle unit, and the other end of each sliding steel plate is lapped on the next trestle unit; each group of 4 main bridge traveling mechanisms 4 are slidably connected in two side sliding sleeves of the trestle unit; each group comprises 4 groups, and two ends of each group are respectively hinged with a main bridge sliding sleeve and a main bridge jacking oil cylinder of the main bridge travelling mechanism 4; the track 11 is erected on a crown beam 12 poured after pile foundations on two sides of the underpass tunnel are constructed; a set of trestle hydraulic and electric control system.
In this embodiment, the construction of a trestle group formed by connecting 20 trestle units in series through a bolt is taken as an example for explanation.
A construction method of a mobile trestle for a downward tunnel comprises the following steps:
1, paving a track on the top surface of a crown beam in advance for trestle traveling and vehicle passing supporting;
2, before the trestle is installed, the bridge approach lap joint is required to be lowered to the concrete elevation (shown in the figure) of the upper top surface of the underpass tunnel in advance, and the existing road surface (60 meters in length) in the installation range of the main bridge is required to be lowered to the position 30cm below the top surface of the crown beam in advance (the existing road surface is not required to be lowered in advance after the trestle is installed);
3, mounting the trestle, wherein the trestle is in a modular design, so that the mounting of a main body structure can be completed within 12 hours, and the traffic can be recovered, and measures such as bridge building and the like can be adopted to recover the road traffic in case of emergency in the mounting process;
4, tunnel construction operations such as excavation of tunnels, concrete lining and the like can be carried out below the trestle after the trestle is installed;
5, when the tunnel concrete lining strength of a construction section meets the vehicle passing requirement:
A. dismantling the lateral approach bridge through a loader;
B. the control system operates the jacking oil cylinder of the front approach bridge to jack the front approach bridge away from the existing road surface;
C. the control system operates the jacking oil cylinder of the rear approach bridge to jack the rear approach bridge, so that the travelling mechanism of the rear approach bridge is supported on the top surface of the poured tunnel;
D. operating a main bridge jacking oil cylinder to jack up through a control system to lift all trestle units so that a main bridge travelling mechanism is supported on a track;
E. starting a main bridge travelling mechanism through a control system, and travelling the trestle to the next cyclic construction station;
F. the front end of the front approach bridge is supported on the existing road surface by operating the front approach bridge jacking oil cylinder to shrink through the control system;
G. the control system operates the rear approach bridge jacking oil cylinder to contract to lift the rear approach bridge travelling mechanism away from the bottom surface, so that the front end of the rear approach bridge is supported on the top surface of the poured tunnel;
H. the main bridge traveling mechanisms of all the trestle units are lifted off the track by operating the main bridge jacking oil cylinders to shrink through the control system, so that the support of each trestle unit is supported on the track;
I. installing lateral approach bridges at two ends of the width surface of a trestle unit needing to pass left and right through a loader;
and J, after the trestle is erected, recovering road traffic (the process can be controlled within 1 hour), and sequentially carrying out the following construction steps of milling and excavating rock mass to be excavated in the tunnel of the next cycle below the trestle, discharging slag, pouring a bottom plate reinforcing mesh, pouring bottom plate concrete, lining side walls and top reinforcing meshes, lining the side walls and the top concrete, maintaining the concrete and the like, and repeating the steps until the tunnel construction is completed.
The utility model discloses in landing stage hydraulic pressure and electrical control system, running gear etc. that relate to, can adopt current landing stage hydraulic pressure and electrical control system, running gear of landing stage for railway tunnel.
Claims (10)
1. The utility model provides a tunnel removes landing stage under wears which characterized in that: the bridge comprises a front approach bridge (1), a rear approach bridge (2) and a plurality of groups of landing stage units (14), wherein each landing stage unit (14) comprises a main bridge (3), a main bridge walking mechanism (4) and a main bridge jacking mechanism (5), the plurality of groups of landing stage units (14) are connected in series, the main bridges of two adjacent landing stage units (14) are hinged through a length surface, the front approach bridge (1) is connected to the length surface of the main bridge (3) of the landing stage unit at the head end, and the rear approach bridge (2) is arranged at the length surface of the main bridge (3) of the landing stage unit at the tail end; the main bridge traveling mechanism (4) and the main bridge jacking mechanism (5) are arranged on the width surface of the main bridge (3).
2. The underpass tunnel mobile trestle of claim 1, characterized in that: the steel plates (6) that slide are paved on the surfaces of the joints of the two adjacent main bridges (3), after the multiple groups of trestle units (14) are connected, the top surface formed by the combination of the front approach bridge (1), the main bridges (3) connected in series, the steel plates (6) that slide and the rear approach bridge (2) forms a passing surface, and a construction area is formed below the main bridges (3).
3. The underpass tunnel mobile trestle of claim 2, characterized in that: still include side direction access bridge (13), side direction access bridge (13) set up in length limit one side or both sides of passing through the face, set up when one side, form the face of passing through of turning left or turn right and pass through the face, set up when both sides, form the face of passing through of turning left and turn right and pass through the face.
4. The underpass tunnel mobile trestle of claim 3, characterized in that: one end of the sliding steel plate (6) is fixed on the main bridge (3) of one trestle unit (14), and the other end is lapped on the main bridge (3) of the next trestle unit (14).
5. The underpass tunnel mobile trestle of claim 4, characterized in that: the front approach bridge (1) is provided with 4 groups and is hinged with the length surface of the main bridge (3) of the head end trestle unit, and the two ends of each of 4 front approach bridge jacking oil cylinders (7) of the front approach bridge (1) are respectively hinged on the front approach bridge (1) and the main bridge (3) of the head end trestle unit.
6. The underpass tunnel mobile trestle of claim 5, characterized in that: the rear approach bridge (2) is 2 groups and hinged with the length surface of the tail trestle unit main bridge (3), a rear approach bridge sliding sleeve is arranged on the rear approach bridge (2), and 4 groups of rear approach bridge traveling mechanisms (8) are arranged in the rear approach bridge sliding sleeve.
7. The underpass tunnel mobile trestle of claim 6, characterized in that: the lateral approach bridges (13) are 2 groups or 4 groups, a left-turning passing surface or a right-turning passing surface is formed when the lateral approach bridges are 2 groups, a left-turning passing surface and a right-turning passing surface are formed when the lateral approach bridges are 4 groups, and each group is hinged with two ends of the width surface of the main bridge of any trestle unit (14).
8. The underpass tunnel mobile trestle of claim 7, characterized in that: the trestle unit (14) is characterized in that 4 main bridge sliding sleeves are arranged on the opposite sides of the two sides of the width surface of the main bridge (3), and 4 main bridge traveling mechanisms (4) are respectively connected in the main bridge sliding sleeves in a sliding mode.
9. The underpass tunnel mobile trestle of claim 8, characterized in that: the main bridge jacking mechanism (5) is of a plurality of groups, each group comprises 4 main bridge jacking oil cylinders, and two ends of each main bridge jacking oil cylinder are respectively hinged with the main bridge sliding sleeve and the main bridge travelling mechanism (4).
10. The underpass tunnel mobile trestle of claim 9, characterized in that: when the main bridge travelling mechanism (4) travels, the main bridge travelling mechanism (4) is supported on the track (11), and the track (11) is erected on a crown beam (12) poured after pile foundation construction on two sides of the underpass tunnel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922097973.2U CN211340371U (en) | 2019-11-29 | 2019-11-29 | Under tunnel removes landing stage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922097973.2U CN211340371U (en) | 2019-11-29 | 2019-11-29 | Under tunnel removes landing stage |
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| CN211340371U true CN211340371U (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112663478A (en) * | 2020-12-14 | 2021-04-16 | 中铁二十局集团第三工程有限公司 | Temporary steel trestle of sea is striden to nearly font |
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2019
- 2019-11-29 CN CN201922097973.2U patent/CN211340371U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112663478A (en) * | 2020-12-14 | 2021-04-16 | 中铁二十局集团第三工程有限公司 | Temporary steel trestle of sea is striden to nearly font |
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