CN113957806A - Construction method of T-shaped beam at bridge-tunnel joint - Google Patents
Construction method of T-shaped beam at bridge-tunnel joint Download PDFInfo
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- CN113957806A CN113957806A CN202111457749.5A CN202111457749A CN113957806A CN 113957806 A CN113957806 A CN 113957806A CN 202111457749 A CN202111457749 A CN 202111457749A CN 113957806 A CN113957806 A CN 113957806A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to the technical field of bridge construction, and discloses a construction method of a T-shaped beam at a bridge-tunnel junction. And then driving the end to be transversely moved of the T beam to transversely move along a preset direction through the sliding device so as to transversely move the T beam to a preset installation position of the first bridge abutment, and jacking the T beam through the sliding device so as to enable the T beam to fall to the preset installation position of the first bridge abutment. The construction method can rapidly finish the transverse movement installation of the T-shaped beam under the condition of non-hoisting equipment hoisting, improves the construction efficiency, shortens the construction period, has simple construction process and less equipment investment, and effectively saves the construction cost. The T-beam mounting method is beneficial to multiple construction parallel operation, is not limited by the size of a field, and solves the problems of difficult approach and difficult mounting of large-scale equipment.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a construction method of a T-shaped beam at a bridge-tunnel joint.
Background
At present, in the field of bridge construction, for example, a highway bridge has a bridge shape with a plurality of prefabricated T-shaped beams, and a bridge erecting machine at the connection part of a bridge and a tunnel is limited by construction space and position, and partial T-shaped beams cannot be erected by directly adopting the bridge erecting machine, because the bridge erecting machine is difficult to accurately install boundary beams at the designed position, the stability of the T-shaped beams is difficult to ensure by a common swinging method during remote installation, the risk of overturning is extremely high, and the construction safety is low.
If large-scale hoisting equipment is adopted to install the T beam, on one hand, foundation treatment and cleaning of a hoisting working surface are required, on the other hand, a bridge and tunnel joint is mostly in a position with complex terrain, the large-scale hoisting equipment is inconvenient to install, and generally has no large-scale hoisting equipment entering conditions for remote areas, and the construction economy is poor. If the T-shaped beam is improved, the period is long from the design and modification application to the design and modification completion, and the overall construction progress is influenced.
Disclosure of Invention
Based on the above problems, the invention aims to provide a construction method of a T-shaped beam at a bridge-tunnel junction, which can quickly and efficiently complete installation of the T-shaped beam at the bridge-tunnel junction and shorten the construction period.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method of a T-shaped beam at a bridge-tunnel joint comprises the following steps:
erecting a bridge girder erection machine at a bridge-tunnel joint, and installing a sliding device on a first abutment, wherein the first abutment is positioned at a tunnel opening;
the T-shaped beam is transported to a second bridge abutment arranged at an interval with the first bridge abutment through the bridge girder erection machine, one end of the T-shaped beam is located at a preset installation position of the second bridge abutment, the other end of the T-shaped beam is a to-be-transversely-moved end, and the to-be-transversely-moved end of the T-shaped beam is fixed on the sliding device;
driving the end to be transversely moved of the T beam to transversely move along a preset direction through the sliding device so as to transversely move the T beam to a preset installation position of the first bridge abutment;
jacking the T-shaped beam through the sliding device, enabling the T-shaped beam to fall to the preset installation position of the first abutment, and dismantling the sliding device.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction of the present invention, the bridge girder erection machine swings and moves the single end of the T-beam to the preset installation position of the second abutment by a swing and shift method.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction according to the present invention, when the bridge girder erection machine is erected, one end of the bridge girder erection machine is extended to the tunnel portal according to a construction site situation, and a planar position of one end of the bridge girder erection machine located in a tunnel lining is adjusted in a lateral movement direction of the T-beam, so as to prepare for swing installation of the T-beam.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction of the invention, the sliding device comprises a sleeper beam assembly, a sliding assembly, a driving assembly and a supporting assembly, the sleeper beam assembly is mounted on the first abutment, the top surface of the sleeper beam assembly is kept horizontal relative to the ground, the sliding assembly and the driving assembly are both arranged on the sleeper beam assembly, and the supporting assembly is used for fixing the T-beam;
the driving assembly comprises a first driving piece and a second driving piece, the first driving piece and the second driving piece are installed on the sleeper beam assembly, the first driving piece is used for driving the supporting assembly to move along the horizontal direction, and the second driving piece is used for driving the supporting assembly and the T beam to move along the vertical direction.
As a preferable scheme of the construction method of the T beam at the bridge-tunnel joint, when the T beam is transversely moved by the sliding device, the construction method comprises the following steps:
s1, driving the support assembly to move on the sliding assembly through the first driving piece, and stopping the transverse moving and pushing when the support assembly slides to the end part of the sliding assembly;
s2, jacking the end to be transversely moved of the T-shaped beam through the second driving piece, and supporting the T-shaped beam by using a temporary support;
s3, moving the sleeper beam assembly and the driving assembly in the transverse moving direction, and lifting the T beam again by the driving assembly to remove the temporary support;
s4, dropping the T beam, and repeating the steps S1-S3 until the T beam moves to the preset installation position of the first bridge abutment;
and S5, jacking the T-shaped beam through the second driving piece, dismantling the supporting assembly, dropping the T-shaped beam to the preset installation position of the first bridge abutment, and dismantling the sleeper beam assembly.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction, the support assembly includes a support beam, and a first support rod and a second support rod rotatably disposed at two ends of the support beam, the T-beam is located on the support beam, ends of the first support rod and the second support rod, which are far away from the support beam, are both supported on a flange of the T-beam, the support beam is located on the sliding assembly, the first driving member can drive the support beam and drive the T-beam to slide on the sliding assembly, and the second driving member can drive the support beam and the T-beam to ascend and descend.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction, two ends of the support beam are provided with hinge seats, the first support rod and the second support rod are provided with connecting plates, the connecting plates are hinged with the corresponding hinge seats, one ends of the first support rod and the second support rod, which are far away from the support beam, are provided with jacking supports, and the first support rod and the second support rod are supported on the flange of the T-beam through the jacking supports.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction of the invention, the first support rod and the second support rod each include a first rod, a second rod and an adjustable lead screw, one end of the adjustable lead screw is connected with the first rod, and the other end of the adjustable lead screw is connected with the second rod, so as to adjust the lengths of the first support rod and the second support rod.
As a preferable embodiment of the construction method of the T-beam at the bridge-tunnel junction according to the present invention, the bolster assembly includes a first bolster, a second bolster, and a third bolster that are sequentially disposed at intervals on the first abutment, a top surface of the first bolster, a top surface of the second bolster, and a top surface of the third bolster are all kept horizontal with respect to the ground, and the driving assembly is fixed to the second bolster.
As a preferable scheme of the construction method of the T-beam at the bridge-tunnel junction, the sliding assembly includes a sliding plate and a moving plate, the sliding plate is disposed on each of the first sleeper beam and the third sleeper beam, the moving plate is disposed on the driving assembly, and the top surface of the sliding plate is flush with the top surface of the moving plate.
The invention has the beneficial effects that:
the invention provides a construction method of a T-shaped beam at a bridge-tunnel joint, which is characterized in that when a prefabricated T-shaped beam is installed at the bridge-tunnel joint, a bridge erecting machine is erected at the bridge-tunnel joint, and a sliding device is installed on a first abutment close to a tunnel portal. And then, the T beam is transported to a second bridge abutment arranged at an interval with the first bridge abutment through a bridge girder erection machine, the position of the T beam is adjusted by using the bridge girder erection machine, one end of the T beam is positioned at the preset installation position of the second bridge abutment, and the other end of the T beam is fixed on the sliding device. And then, driving the end to be transversely moved of the T beam to transversely move along a preset direction through the sliding device so as to transversely move the T beam to a preset installation position of the first bridge abutment, jacking the T beam through the sliding device, enabling the T beam to fall to the preset installation position of the first bridge abutment, and finally removing the sliding device. The construction method can rapidly finish the transverse movement installation of the T-shaped beam under the condition of non-hoisting equipment hoisting, improves the construction efficiency, shortens the construction period, has simple construction process and less equipment investment, and effectively saves the construction cost. Meanwhile, the T-beam mounting method is beneficial to multiple construction parallel operations, is not limited by the size of a field, and solves the problems of difficult approach and difficult mounting of large-scale equipment.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic view of an installation of a bridge girder erection machine and a skid device according to an embodiment of the present invention;
FIG. 2 is a first schematic illustration of a T-beam installation provided by an embodiment of the present invention;
FIG. 3 is an elevational view of FIG. 2;
FIG. 4 is a schematic structural view of the T-beam fixed by the sliding device according to the embodiment of the present invention;
FIG. 5 is a flow chart of the traversing of the T-beam at the bridge-tunnel junction according to the embodiment of the present invention;
FIG. 6 is a second schematic illustration of a T-beam installation provided by an embodiment of the present invention;
FIG. 7 is an elevational view of FIG. 6;
FIG. 8 is a third schematic illustration of a T-beam installation provided by an embodiment of the present invention;
FIG. 9 is an elevational view of FIG. 8;
FIG. 10 is a schematic view of a T-beam provided in accordance with an embodiment of the present invention after installation;
fig. 11 is an elevation view of fig. 10.
In the figure:
10-a bridge girder erection machine; 20-a slipping device; a 30-T beam;
1-a bolster assembly; 2-a glide assembly; 3-a drive assembly; 4-a support assembly; 5-a control module;
11-a first bolster; 12-a second bolster; 13-third bolster;
21-a sliding plate; 22-moving the plate;
31-a first drive member; 32-a second drive member;
41-a support beam; 42-a first support bar; 43-a second support bar; 44-a connecting pin;
411-hinge mount; 412-a stiffener;
421-a first rod; 422-a second rod; 423-adjustable screw rod;
4211-connecting plate; 4221-jacking;
100-a first abutment; 200-a second abutment; 300-support base stone; 400-tunnel lining.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 11, the present embodiment provides a construction method for a T-beam at a bridge-tunnel junction, specifically including the following steps:
step 1: erecting a bridge girder erection machine 10 at the joint of a bridge and a tunnel, and installing a sliding device 20 on a first bridge abutment 100, wherein the first bridge abutment 100 is positioned at the tunnel opening;
step 2: the T-shaped beam 30 is transported to a second bridge abutment 200 arranged at a distance from the first bridge abutment 100 through the bridge girder erection machine 10, so that one end of the T-shaped beam 30 is located at a preset installation position of the second bridge abutment 200, the other end of the T-shaped beam 30 is a to-be-transversely-moved end, and the to-be-transversely-moved end of the T-shaped beam 30 is fixed on the sliding device 20;
and step 3: driving the end to be traversed of the T-beam 30 to traverse in a preset direction by the sliding device 20 to traverse the T-beam 30 to a preset installation position of the first abutment 100;
and 4, step 4: and jacking the T-shaped beam 30 through the sliding device 20, enabling the T-shaped beam 30 to fall to the preset installation position of the first abutment 100, and dismantling the sliding device 20.
As shown in fig. 3, the tunnel lining 400 at the bridge-tunnel junction is arc-shaped, the internal space thereof is limited, and when the T-beam 30 is installed by using the hoisting device, the installation space of the leftmost T-beam 30 is limited, and the installation is difficult in the conventional hoisting installation manner, which brings inconvenience to the construction.
According to the construction method, under the condition of hoisting by non-hoisting equipment, transverse movement installation of the T-shaped beam 30 can be completed quickly, the construction efficiency is improved, the construction period is shortened, the construction process is simple, the equipment investment is less, and the construction cost is effectively saved. Meanwhile, the T-beam mounting method is beneficial to multiple construction parallel operations, is not limited by the size of a field, and solves the problems of difficult approach and difficult mounting of large-scale equipment.
Alternatively, in step 2, the bridge girder erection machine 10 swings the single end of the T-beam 30 to the preset installation position of the second abutment 200 by the swing movement method. Specifically, referring to fig. 2, one end of the T-beam 30 is lifted by the bridge girder erection machine 10, and the angle of the bridge girder erection machine 10 is adjusted to swing and move the one end of the T-beam 30 to a preset installation position of the second abutment 200. In this embodiment, the preset installation position of the second abutment 200 is the outermost abutment pad 300 of the second abutment 200.
Further, when the bridge girder erection machine 10 is erected, one end of the bridge girder erection machine 10 is extended to the tunnel entrance according to the construction site conditions, and the planar position of the end of the bridge girder erection machine 10 positioned in the tunnel lining 400 is adjusted along the transverse moving direction of the T-beam 30, so that the bridge girder erection machine 10 meets the requirements of swinging and moving, and preparation is made for swinging and moving installation of the T-beam 30.
Alternatively, referring to fig. 3 and 4, the sliding device 20 includes a sleeper beam assembly 1, a sliding assembly 2, a driving assembly 3 and a supporting assembly 4, the sleeper beam assembly 1 is mounted on the first bridge abutment 100, the top surface of the sleeper beam assembly 1 is kept horizontal relative to the ground, the sliding assembly 2 and the driving assembly 3 are both disposed on the sleeper beam assembly 1, and the supporting assembly 4 is used for fixing the T beam 30. The top surface of the sleeper beam assembly 1 is kept horizontal relative to the ground, so that the sliding assembly 2 on the sleeper beam assembly can be in a horizontal state after being installed, and the stability of the supporting assembly 4 in the sliding process is ensured. The sliding assembly 2 provides a sliding foundation for sliding of the T beam 30, the driving assembly 3 can drive the supporting assembly 4 and drive the T beam 30 to complete transverse movement installation, the problem that construction space of a bridge and tunnel joint is limited and the problem that large-scale hoisting equipment is difficult to install are not needed to be considered, the use of the large-scale hoisting equipment is avoided, and construction cost is reduced. Supporting component 4 can firmly fix T roof beam 30, prevents to slide in-process T roof beam 30 and rocks, guarantees that T roof beam 30 can sideslip to predetermineeing the mounted position steadily, improves the construction security.
Alternatively, referring to fig. 4, the driving assembly 3 includes a first driving member 31 and a second driving member 32, the first driving member 31 and the second driving member 32 are both mounted on the bolster assembly 1, and the first driving member 31 is used for driving the support assembly 4 to move in the horizontal direction to complete the traverse of the T-beam 30. The second driving member 32 is used for driving the support assembly 4 and the T-beam 30 to move in the vertical direction so as to complete the support and beam falling operation of the T-beam 30 and the disassembly operation of the support assembly 4. In this embodiment, the first driving member 31 is a horizontally disposed hydraulic jack, and the second driving member 32 is a vertically disposed hydraulic jack, which is easy to control and stable to drive.
Referring to fig. 5, when the sliding device 20 is adopted to transversely move the T-beam 30 in the present embodiment, the method specifically includes the following steps:
s1, driving the support component 4 to move on the sliding component 2 through the first driving piece 31, and stopping the transverse moving and pushing when the support component 4 slides to the end part of the sliding component 2;
s2, jacking the end to be transversely moved of the T-shaped beam 30 through the second driving piece 32, and supporting the T-shaped beam 30 by using a temporary support;
s3, moving the sleeper beam assembly 1 and the driving assembly 3 in the transverse moving direction, and lifting the T beam 30 again by the driving assembly 3 to remove the temporary support;
s4, falling the T beam 30, and repeating the steps S1-S3 until the T beam 30 transversely moves to the preset installation position of the first bridge abutment 100;
and S5, jacking the T-shaped beam 30 through the second driving piece 32, removing the support assembly 4, dropping the T-shaped beam 30 to the preset installation position of the first abutment 100, and removing the sleeper beam assembly 1.
Optionally, referring to fig. 4, the support assembly 4 includes a support beam 41, and a first support rod 42 and a second support rod 43 rotatably disposed at two ends of the support beam 41, the T-beam 30 is disposed on the support beam 41, ends of the first support rod 42 and the second support rod 43, which are away from the support beam 41, are both supported on a flange of the T-beam 30, the support beam 41 is disposed on the sliding assembly 2, the first driving member 31 can drive the support beam 41 and the T-beam 30 to slide on the sliding assembly 2, and the second driving member 32 can drive the support beam 41 and the T-beam 30 to ascend and descend. The first supporting rod 42 and the second supporting rod 43 are rotatably connected with the supporting beam 41, and the rotating angles of the first supporting rod 42 and the second supporting rod 43 can be conveniently adjusted as required when the T beam 30 is fixed, so that the T beam 30 can be quickly fixed.
Further, referring to fig. 3, the sliding device 20 further includes a control module 5, and the control module 5 can control opening and closing of the first driving element 31 and the second driving element 32. The remote control of the first driving part 31 and the second driving part 32 can be realized through the control module 5, and the construction safety and the construction efficiency are improved. In this embodiment, the first driving member 31 and the second driving member 32 are both exemplified by hydraulic jacks, the control module 5 includes a control box, an oil pressure gauge and an electric hydraulic device, the control box is electrically connected to both the two hydraulic jacks, and the oil pressure gauge is used for detecting oil pressures of the two hydraulic jacks in real time, so as to adjust the hydraulic jacks in real time according to the detection result.
Alternatively, referring to fig. 4, the hinge seats 411 are disposed at both ends of the support beam 41, and the connection plates 4211 are disposed on the first support rod 42 and the second support rod 43, and the connection plates 4211 are hinged with the corresponding hinge seats 411. Further, the support assembly 4 further comprises a connecting pin 44, and the hinge seat 411 is hinged to the connecting plate 4211 through the connecting pin 44. In this embodiment, the hinge seat 411 includes the mounting panel and sets up the otic placode on the mounting panel, and on the mounting panel was fixed in a supporting beam 41 through the bolt, all seted up the hinge hole on otic placode and the connecting plate 4211, connecting pin 44 wore to locate two hinge holes to realize the articulated of connecting plate 4211 and otic placode. After the first support bar 42 and the second support bar 43 are supported on the flange of the T-beam 30, the first support bar 42 and the second support bar 43 are both inclined relative to the support beam 41, that is, the first support bar 42, the second support bar 43 and the support beam 41 form a triangular structure, thereby improving the support stability of the T-beam 30.
With continued reference to fig. 4, the ends of the first support bar 42 and the second support bar 43 away from the support beam 41 are each provided with a support 4221, and the first support bar 42 and the second support bar 43 are each supported on the flange of the T-beam 30 through the support 4221. In this embodiment, the top support 4221 is disposed on the second rod 422, and the top support 4221 is a U-shaped structure, which can increase the contact area between the first support rod 42 and the T-beam 30 flange and the second support rod 43, thereby improving the support stability.
Optionally, each of the first and second support rods 42 and 43 includes a first rod 421, a second rod 422, and an adjustable screw rod 423, and one end of the adjustable screw rod 423 is connected to the first rod 421, and the other end is connected to the second rod 422, so as to adjust the lengths of the first and second support rods 42 and 43. When the T-beam 30 is fixed, the lengths of the first support rod 42 and the second support rod 43 are adjusted through the adjustable screw 423, so that the first support rod 42 and the second support rod 43 tightly prop against the flange of the T-beam 30, and the T-beam 30 is ensured to be fixed firmly. In addition, the support assembly 4 can be adapted to T-beams 30 with different specifications by adjusting the lengths of the first support rod 42 and the second support rod 43, so that the universality of the sliding device 20 is improved.
It should be noted that the adjustment of the lengths of the first supporting rod 42 and the second supporting rod 43 is not limited to the adjustable lead screw 423 in this embodiment, and in other embodiments, a telescopic rod structure may be adopted as long as the length adjustment of the first supporting rod 42 and the second supporting rod 43 can be realized.
In this embodiment, the supporting beam 41 is made of i-shaped steel, a plurality of stiffening plates 412 are arranged on the supporting beam 41 at intervals along the length direction thereof, and the plurality of stiffening plates 412 are opposite to the web of the T-beam 30. That is, the plurality of stiffening plates 412 are disposed in the middle of the support beam 41, and the T-beam 30 is placed on the support beam 41 and then just above the plurality of stiffening plates 412, so that the plurality of stiffening plates 412 can increase the strength of the support beam 41 and prevent the support beam 41 from deforming. Illustratively, three stiffening plates 412 are provided in the present embodiment.
Alternatively, referring to fig. 4, the bolster assembly 1 includes a first bolster 11, a second bolster 12, and a third bolster 13 that are sequentially spaced apart on the first bridge 100, a top surface of the first bolster 11, a top surface of the second bolster 12, and a top surface of the third bolster 13 are all kept horizontal with respect to the ground, and the driving assembly 3 is fixed to the second bolster 12. Referring to fig. 2 and 3, in the present embodiment, the first, second, and third sleepers 11, 12, and 13 are on the same horizontal line and are located between the leading edge of the first abutment 100 and the abutment pad 300 on the first abutment 100. Because the top surface of the first abutment 100 is an inclined surface, in order to ensure that the top surfaces of the first sleeper beam 11, the second sleeper beam 12 and the third sleeper beam 13 are horizontal to the ground, the first sleeper beam 11, the second sleeper beam 12 and the third sleeper beam 13 are all in a wedge-shaped structure, the bottom surfaces of the first sleeper beam 11, the second sleeper beam 12 and the third sleeper beam 13 are attached to the top surface of the first abutment 100, and after the first abutment 100, the top surfaces of the first sleeper beam 11, the second sleeper beam 12 and the third sleeper beam are horizontal to the ground, so that the sliding assembly 2 on the first abutment can be kept in a horizontal state after being installed.
Preferably, the first sleeper beam 11, the second sleeper beam 12 and the third sleeper beam 13 are all made of square timber, the material is convenient to obtain, and the square timber is easy to machine and form.
Optionally, the sliding assembly 2 comprises a sliding plate 21 and a moving plate 22, the sliding plate 21 is disposed on each of the first bolster 11 and the third bolster 13, the moving plate 22 is disposed on the driving assembly 3, and the top surface of the sliding plate 21 is flush with the top surface of the moving plate 22, so that the supporting beam 41 is in contact with the moving plate 22 and the two sliding plates 21 after being disposed on the sliding assembly 2. After the first driving member 31 is started, the moving plate 22 can drive the supporting beam 41 to slide relative to the two sliding plates 21, so that the T-shaped beam 30 can be transversely moved. The two sliding plates 21 can ensure that the supporting beam 41 has a large enough contact area with the sliding assembly 2, and the sliding stability is improved.
Preferably, the sliding plate 21 is a teflon sliding plate, which is also called teflon plate, the outer skin is the teflon plate, and the inner part has one to multiple steel plate interlayers. The tetrafluoro slide plate has small surface sliding friction coefficient, can reduce sliding resistance and has good wear resistance. The moving plate 22 is made of an anti-slip steel plate, so that the friction force between the moving plate 22 and the supporting beam 41 can be increased, the sliding between the moving plate 22 and the supporting beam 41 is prevented when the first driving member 31 drives the supporting beam 41 to slide through the moving plate 22, and the sliding stability is ensured. In addition, the anti-skid steel plate has enough strength, and can meet the use requirement when the second driving piece 32 jacks the supporting component 4 and the T-shaped beam 30.
Further, referring to fig. 3 and 4, the height of the first bolster 11 and the height of the third bolster 13 are both higher than the height of the second bolster 12, and since the driving assembly 3 is disposed on the second bolster 12 and the moving plate 22 is disposed on the driving assembly 3 in this embodiment, and it is necessary to ensure that the moving plate 22 is flush with the two sliding plates 21, the second bolster 12 is the lowest enough to meet the requirement that the moving plate 22 and the two sliding plates 21 are flush after being installed.
In this embodiment, the plane where the moving plate 22 and the two sliding plates 21 are located is higher than the top surface of the support base pad 300, so as to ensure that the T beam 30 can fall to a preset installation position after being transversely moved in place, and meanwhile, the interference between the T beam 30 and the support base pad 300 in the sliding process can be avoided.
According to the construction method of the T-shaped beam at the bridge-tunnel joint, when the prefabricated T-shaped beam 30 is installed at the bridge-tunnel joint, the concrete process is as follows:
referring to fig. 1, a bridge girder erection machine 10 is first erected at a bridge-tunnel junction, and a skid device 20 is installed on a first abutment 100 near a tunnel portal. The T-beam 30 is then transported to a second abutment 200 spaced apart from the first abutment 100 by the bridge girder erection machine 10, the position of the T-beam 30 is adjusted by the bridge girder erection machine 10, one end of the T-beam 30 is swung to a predetermined installation position of the second abutment 200 by an oscillating method (i.e., the uppermost support bed 300 of the second abutment 200 in fig. 2), the other end of the T-beam 30 is fixed by the support assembly 4 of the sliding device 20, and the support assembly 4 is located on the sliding assembly 2 (as shown in fig. 2 and 3).
Then, the control module 5 controls the first driving member 31 to start to push the supporting beam 41 to slide on the sliding plate 21 in the direction of the arrow in fig. 3, and when the supporting beam 41 slides to the leftmost end of the sliding plate 21 on the first bolster 11 (as shown in fig. 6 and 7), the lateral pushing is stopped. At this time, the control module 5 controls the second driving member 32 to start, jack up the supporting assembly 4 and the T-beam 30, support and fix the supporting assembly 4 and the T-beam 30 by using the temporary support, and then the second driving member 32 returns to the oil cylinder, so as to integrally move the bolster assembly 1 and the driving assembly 3 in the arrow direction in fig. 7 in preparation for the next traverse. After moving to the proper position, the second drive 32 is again activated to hold the support assembly 4 and the T-beam 30 and the temporary support is removed. After the temporary support is removed, the second driving member 32 is driven to return to the oil cylinder, so that the support beam 41 falls on the sliding plate 21 (as shown in fig. 8 and 9), and the first driving member 31 is again started to push the support assembly 4 and the T-beam 30 laterally in the direction of the arrow in fig. 9.
The above steps are repeated until the T-beam 30 is traversed to a preset installation position on the first abutment 100 (i.e., at the uppermost abutment pad 300 of the first abutment 100 in fig. 10 in this embodiment). After the T-beam 30 has been traversed into position, the second drive member 32 is again actuated to lift the T-beam 30 to remove the support assembly 4. After the support assembly 4 is removed, the second driving member 32 is driven to return to the oil retraction cylinder, so that the T-shaped beam 30 falls onto the support cushion 300, and the T-shaped beam 30 is installed. Finally, the driving assembly 3 and the sleeper beam assembly 1 are removed in sequence (as shown in fig. 10 and 11).
The T beam installation method can rapidly complete the transverse movement installation of the T beam 30, improve the construction efficiency, shorten the construction period and save the construction cost. Meanwhile, the T-beam mounting method is beneficial to multiple construction parallel operations, is not limited by the size of a field, and solves the problems of difficult approach and difficult mounting of large-scale equipment.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A construction method of a T beam at a bridge-tunnel joint is characterized by comprising the following steps:
erecting a bridge girder erection machine (10) at the joint of a bridge and a tunnel, and installing a sliding device (20) on a first abutment (100), wherein the first abutment (100) is positioned at the tunnel opening;
the bridge girder erection machine (10) is used for transporting a T-shaped girder (30) to a second bridge abutment (200) which is arranged at an interval with the first bridge abutment (100), one end of the T-shaped girder (30) is located at a preset installation position of the second bridge abutment (200), the other end of the T-shaped girder (30) is an end to be transversely moved, and the end to be transversely moved of the T-shaped girder (30) is fixed on the sliding device (20);
driving the end to be transversely moved of the T beam (30) to transversely move along a preset direction through the sliding device (20) so as to transversely move the T beam (30) to a preset installation position of the first bridge abutment (100);
jacking the T-shaped beam (30) through the sliding device (20), enabling the T-shaped beam (30) to fall to the preset installation position of the first abutment (100), and dismantling the sliding device (20).
2. The construction method of the T-shaped beam at the bridge-tunnel junction according to claim 1, wherein the bridge girder erection machine (10) swings the single end of the T-shaped beam (30) to the preset installation position of the second abutment (200) by a swing-out method.
3. The construction method of the T-beam at the bridge-tunnel junction according to claim 2, wherein when the bridge erecting machine (10) is erected, one end of the bridge erecting machine (10) is extended to the tunnel entrance according to the construction site conditions, and the planar position adjustment of the end of the bridge erecting machine (10) positioned in the tunnel lining (400) is carried out along the traversing direction of the T-beam (30), so as to prepare for the swinging installation of the T-beam (30).
4. The construction method of the T beam at the bridge-tunnel junction according to claim 1, wherein the sliding device (20) comprises a sleeper beam assembly (1), a sliding assembly (2), a driving assembly (3) and a supporting assembly (4), the sleeper beam assembly (1) is installed on the first bridge abutment (100), the top surface of the sleeper beam assembly (1) is kept horizontal relative to the ground, the sliding assembly (2) and the driving assembly (3) are both arranged on the sleeper beam assembly (1), and the supporting assembly (4) is used for fixing the T beam (30);
the driving assembly (3) comprises a first driving piece (31) and a second driving piece (32), the first driving piece (31) and the second driving piece (32) are installed on the sleeper beam assembly (1), the first driving piece (31) is used for driving the supporting assembly (4) to move along the horizontal direction, and the second driving piece (32) is used for driving the supporting assembly (4) and the T beam (30) to move along the vertical direction.
5. The construction method of the T-shaped beam at the bridge-tunnel junction of claim 4, characterized in that when the T-shaped beam (30) is transversely moved by the sliding device (20), the method comprises the following steps:
s1, driving the support assembly (4) to move on the sliding assembly (2) through the first driving piece (31), and stopping transverse moving and pushing when the support assembly (4) slides to the end part of the sliding assembly (2);
s2, jacking the end to be transversely moved of the T-shaped beam (30) through the second driving piece (32), and supporting the T-shaped beam (30) by using a temporary support;
s3, moving the sleeper beam assembly (1) and the driving assembly (3) in the transverse moving direction, and lifting the T-shaped beam (30) again by the driving assembly (3) to remove the temporary support;
s4, dropping the T beam (30) and repeating the steps S1-S3 until the T beam (30) transversely moves to the preset installation position of the first bridge abutment (100);
s5, jacking the T-shaped beam (30) through the second driving piece (32), dismantling the supporting assembly (4), dropping the T-shaped beam (30) to a preset installation position of the first bridge abutment (100), and dismantling the sleeper beam assembly (1).
6. The construction method of the T-beam at the bridge-tunnel junction according to claim 4, wherein the supporting assembly (4) comprises a supporting beam (41) and a first supporting rod (42) and a second supporting rod (43) rotatably disposed at two ends of the supporting beam (41), the T-beam (30) is located on the supporting beam (41), ends of the first supporting rod (42) and the second supporting rod (43) far away from the supporting beam (41) are both supported on a flange of the T-beam (30), the supporting beam (41) is located on the sliding assembly (2), the first driving member (31) can drive the supporting beam (41) and drive the T-beam (30) to slide on the sliding assembly (2), and the second driving member (32) can drive the supporting beam (41) and the T-beam (30) to ascend and descend.
7. The construction method of the T beam at the bridge and tunnel junction according to claim 6, wherein the two ends of the supporting beam (41) are provided with hinge seats (411), the first supporting rod (42) and the second supporting rod (43) are provided with connecting plates (4211), the connecting plates (4211) are hinged to the corresponding hinge seats (411), the ends of the first supporting rod (42) and the second supporting rod (43) far away from the supporting beam (41) are provided with top supports (4221), and the first supporting rod (42) and the second supporting rod (43) are supported on the flange of the T beam (30) through the top supports (4221).
8. The construction method of the T-shaped beam at the bridge-tunnel junction of claim 6, wherein the first supporting rod (42) and the second supporting rod (43) comprise a first rod (421), a second rod (422) and an adjustable screw rod (423), one end of the adjustable screw rod (423) is connected with the first rod (421), and the other end is connected with the second rod (422) to adjust the length of the first supporting rod (42) and the second supporting rod (43).
9. The construction method of the T beam at the bridge-tunnel junction according to claim 4, characterized in that the sleeper beam assembly (1) comprises a first sleeper beam (11), a second sleeper beam (12) and a third sleeper beam (13) which are sequentially arranged on the first abutment (100) at intervals, the top surface of the first sleeper beam (11), the top surface of the second sleeper beam (12) and the top surface of the third sleeper beam (13) are all kept horizontal to the ground, and the driving assembly (3) is fixed on the second sleeper beam (12).
10. The construction method of the T-shaped beam at the bridge-tunnel junction according to claim 9, wherein the sliding assembly (2) comprises a sliding plate (21) and a moving plate (22), the sliding plate (21) is arranged on each of the first sleeper beam (11) and the third sleeper beam (13), the moving plate (22) is arranged on the driving assembly (3), and the top surface of the sliding plate (21) is flush with the top surface of the moving plate (22).
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| JP2001115420A (en) * | 1999-10-18 | 2001-04-24 | Kawada Construction Co Ltd | Timbering material moving device |
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| CN110886233A (en) * | 2019-12-17 | 2020-03-17 | 中交路桥建设有限公司 | Construction method for connecting T-shaped beam with bridge |
| CN111270615A (en) * | 2020-03-11 | 2020-06-12 | 中国建筑第八工程局有限公司 | Tunnel widening structure at bridge-tunnel connection part and bridge construction method |
| CN112627843A (en) * | 2020-12-18 | 2021-04-09 | 中交路桥华东工程有限公司 | Bridge and tunnel overlapping area precast beam installation method |
| CN113322819A (en) * | 2021-06-01 | 2021-08-31 | 中交路桥华东工程有限公司 | First-span T-beam erection method at tunnel outlet |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001115420A (en) * | 1999-10-18 | 2001-04-24 | Kawada Construction Co Ltd | Timbering material moving device |
| CN102650118A (en) * | 2012-05-18 | 2012-08-29 | 科达集团股份有限公司 | Construction device and method for erecting prefabricated beam by slip method |
| CN208088140U (en) * | 2018-04-03 | 2018-11-13 | 中交路桥华东工程有限公司 | A kind of T beams mobile device |
| CN110886233A (en) * | 2019-12-17 | 2020-03-17 | 中交路桥建设有限公司 | Construction method for connecting T-shaped beam with bridge |
| CN111270615A (en) * | 2020-03-11 | 2020-06-12 | 中国建筑第八工程局有限公司 | Tunnel widening structure at bridge-tunnel connection part and bridge construction method |
| CN112627843A (en) * | 2020-12-18 | 2021-04-09 | 中交路桥华东工程有限公司 | Bridge and tunnel overlapping area precast beam installation method |
| CN113322819A (en) * | 2021-06-01 | 2021-08-31 | 中交路桥华东工程有限公司 | First-span T-beam erection method at tunnel outlet |
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| CN113957806B (en) | 2023-10-20 |
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