CN109629433B - Bridge construction method based on auxiliary supporting leg device - Google Patents
Bridge construction method based on auxiliary supporting leg device Download PDFInfo
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- CN109629433B CN109629433B CN201811642993.7A CN201811642993A CN109629433B CN 109629433 B CN109629433 B CN 109629433B CN 201811642993 A CN201811642993 A CN 201811642993A CN 109629433 B CN109629433 B CN 109629433B
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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 provides a device for paving auxiliary supporting legs of a bridge girder erection machine and a bridge construction method based on the auxiliary supporting legs, wherein the device comprises the following components: underframe structure, perpendicular beam structure, fixed cross beam structure, top push structure, free beam structure to and the down tube structure, the bridge girder erection machine connect in the free beam structure upside, the fixed cross beam structure is connected in two along the horizontally reference direction erect between the beam structure, the free cross beam structure also follows the reference direction connect in erect between the beam structure, the free cross beam structure is located the fixed cross beam structure upside, just the free cross beam structure with the fixed cross beam structure is along vertical to having the interval, top push structure install in the fixed cross beam structure, top push structure is located the interval, top push structure is used for pushing away the free cross beam structure is along vertical to removing, erect the lower extreme of beam structure with the underframe structural connection. The invention can freely adjust the supporting height of the auxiliary supporting leg device.
Description
Technical Field
The invention relates to the field of bridge construction, in particular to a bridge construction method based on an auxiliary supporting leg device.
Background
When the bridge with the prefabricated structure is assembled and constructed by the bridge girder erection machine, for example, when the bridge girder erection machine moves or passes through a hole, a supporting point needs to be temporarily added at the front end of the cantilever of the bridge girder erection machine or below the main truss in order to ensure the overall safety of the bridge girder erection machine due to the fact that the cantilever of the main truss of the bridge girder erection machine is too large. In the prior art, the supporting point can be supported by an auxiliary leg device.
However, the supporting height of the auxiliary leg device is usually fixed, and under different construction requirements, if the required supporting height is different, the requirements can only be met respectively by manufacturing the leg devices with different heights, and then, if the supporting height of multiple differences is required in different construction stages in the bridge construction process of, for example, a large longitudinal slope bridge, the auxiliary leg devices with multiple different heights need to be manufactured respectively, which wastes time and labor and is high in cost.
Disclosure of Invention
The invention provides a bridge construction method based on an auxiliary supporting leg device, and aims to solve the problems of time and labor waste and high cost.
According to a first aspect of the present invention, there is provided an auxiliary leg device for a bridge erecting machine, comprising: a bottom frame structure, two vertical beam structures parallel to each other, a fixed beam structure, a pushing structure, a movable beam structure, and an inclined rod structure, wherein a bridge erecting machine is connected to the upper side of the movable beam structure, the fixed beam structure is connected between the two vertical beam structures along a horizontal reference direction, the movable beam structure is also connected between the vertical beam structures along the reference direction, the movable beam structure is located at the upper side of the fixed beam structure, the movable beam structure and the fixed beam structure have a gap along the vertical direction, the pushing structure is installed on the fixed beam structure and located at the gap, the pushing structure is used for pushing the movable beam structure to move along the vertical direction, the lower end of the vertical beam structure is connected with the bottom frame structure, and the inclined rod structure is obliquely connected with the vertical beam structure and the bottom frame structure, the bottom frame structure is connected to a beam structure or a pier structure.
Optionally, the opposite inner sides of the vertical beam structures are provided with guide structures, and the limit guide structures are used for guiding the movable cross beam structures to move vertically.
Optionally, the guide structure includes a vertical groove arranged vertically, and a limiting plate arranged in the vertical groove.
Optionally, erect the girder construction and include along vertical to the three perpendicular roof beam section that connects gradually, the perpendicular roof beam section of bottom is connected in the three perpendicular roof beam section the underframe structure, the perpendicular roof beam section in the middle of the three perpendicular roof beam section is connected fixed beam structure, the perpendicular roof beam section at top is connected in the three perpendicular roof beam section the movable beam structure can dismantle the connection between two adjacent perpendicular roof beam sections.
Optionally, the fixed beam structure includes well crossbeam to and two bracing, well crossbeam includes the edge first fixed beam section, two edges that the reference direction set up the fixed beam section of second that the reference direction set up, one of them fixed beam section of second is followed the reference direction connect in between the one end of first fixed beam section and a vertical beam structure that corresponds thereof, another fixed beam section of second is followed the reference direction connect in between the other end of first fixed beam section and another vertical beam structure that corresponds thereof, the upper end of a bracing is connected to every fixed beam section downside of second, a vertical beam structure and/or the bottom end rail that corresponds are connected to the lower extreme of every bracing.
Optionally, the number of the pushing structures is two, and each pushing structure is arranged on one second fixed beam section.
Optionally, the down tube structure includes the down tube steel pipe, locates the flexible part of upper end of down tube steel pipe upper end, and locates the flexible part of lower extreme of down tube steel pipe lower extreme, the flexible part of upper end passes through first rotation axis swivelling joint erect the girder construction, the flexible part of lower extreme passes through second rotation axis swivelling joint underframe structure, first rotation axis with the second rotation axis all is on a parallel with the reference direction, the flexible part of upper end with the flexible part of lower extreme all can for the down tube steel pipe is followed the length direction of down tube steel pipe is flexible.
Optionally, the upper end telescopic part comprises an upper end screw rod, the upper end screw rod is inserted into the upper end of the diagonal rod steel pipe, an upper end nut is further arranged at the upper end of the diagonal rod steel pipe, threads of the upper end screw rod are matched with threads of the upper end nut, and the upper end screw rod is driven to be telescopic relative to the diagonal rod steel pipe through relative rotation of the upper end nut and the upper end screw rod;
the lower end telescopic part comprises a lower end screw rod, the lower end screw rod is inserted into the lower end of the inclined rod steel pipe, a lower end nut is further arranged at the lower end of the inclined rod steel pipe, threads of the lower end screw rod are matched with threads of the lower end nut, and the lower end screw rod is driven to stretch relative to the inclined rod steel pipe through relative rotation of the lower end nut and the lower end screw rod.
Optionally, the bottom frame structure includes two rectangular frames, the rectangular frame is including enclosing the bottom frame shaped steel that closes in proper order.
Optionally, the underframe structure still includes two sets of rod irons, and at least one underframe shaped steel in every rectangle frame is by a set of the rod iron passes, the rod iron still inserts in the hole for hoist of the section roof beam of rectangle frame downside, it has the hole sealing concrete to fill in the hole for hoist.
Optionally, the device further includes a lower beam, the lower beam is connected between the two vertical beam structures along the reference direction, and the lower beam is located on the lower side of the fixed beam structure.
According to a second aspect of the invention, a bridge construction method based on an auxiliary support leg device is provided, which comprises the following steps:
disassembling the auxiliary supporting leg device of the bridge girder erection machine;
hoisting the detached auxiliary supporting leg device of the bridge girder erection machine to the position of the current target block;
and assembling the auxiliary supporting leg device of the bridge girder erection machine hoisted to the target block position, and supporting the auxiliary supporting leg device of the bridge girder erection machine between the target block and the bridge girder erection machine through the pushing of a pushing structure of the auxiliary supporting leg device.
According to the auxiliary supporting leg device of the bridge girder erection machine and the bridge construction method based on the auxiliary supporting leg device, the movable cross beam structure and the bridge girder erection machine connected with the movable cross beam structure can be driven to move along the vertical direction through the fixed cross beam structure, the movable cross beam structure and the pushing structure, so that the support height can be adjusted, and the support height of the auxiliary supporting leg device can be adjusted freely according to the current support height requirement. For example: the position of the auxiliary supporting leg device can be changed by the aid of the bridge construction device when the bridge with the large longitudinal slope is constructed, the supporting height of the auxiliary supporting leg device can be adjusted adaptively, and construction requirements of different beams and through holes are met.
The alternative of the invention also ensures the height adjustment in the vertical direction and the stability of the auxiliary leg device during adjustment through the limit structures such as the vertical groove and the limit plate.
In the alternative scheme of the invention, as the position of the auxiliary supporting leg device needs to be changed, the corresponding beam structure and the vertical beam structure can be formed through the connection between the beam sections, the vertical beam sections and the like, and further, the disassembly, the movement, the installation and the use of the beam structure and the vertical beam structure can be facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art 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 these drawings without creative efforts.
FIG. 1 is a schematic front view of an auxiliary leg assembly of a bridge girder erection machine according to an embodiment of the invention;
FIG. 2 is a schematic side view of an auxiliary leg assembly of a bridge girder erection machine according to an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a diagonal bar structure in an embodiment of the present invention;
FIG. 4 is a first schematic structural diagram of a bottom frame structure according to an embodiment of the present invention;
fig. 5 is a second schematic structural view of a bottom frame structure according to an embodiment of the present invention;
fig. 6a to 6n are schematic diagrams of construction links in a construction process of a bridge construction method using an auxiliary leg supporting device according to an embodiment of the present invention.
Description of reference numerals:
1-vertical beam structure;
11-vertical beam section;
12-a vertical slot;
2-a movable beam structure;
21-an upper cross beam;
22-tetrafluoro slide plate;
3-fixing the beam structure;
31-a middle cross beam;
311-a first fixed beam section;
312-a second fixed beam section;
32-diagonal bracing;
4-a bridge girder erection machine;
5-bottom frame structure;
51-rectangular frame;
511-first bottom frame section steel;
512-second bottom frame section steel;
52-steel bar;
6-segment beam;
61-hoisting holes;
62-hole sealing concrete;
7-a lower cross beam;
8-a diagonal rod structure;
81-diagonal steel pipes;
82-upper end telescoping member;
821-upper end tab;
822-upper end nut;
823-screw at upper end;
83-lower end telescoping member;
831-lower tab;
832-lower end nut;
833-lower screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
FIG. 1 is a schematic front view of an auxiliary leg assembly of a bridge girder erection machine according to an embodiment of the invention; fig. 2 is a side view schematically illustrating an auxiliary leg device of a bridge girder erection machine according to an embodiment of the present invention.
Referring to fig. 1 and 2, the auxiliary leg device of the bridge girder erection machine comprises: the structure comprises a bottom frame structure 5, two vertical beam structures 1 which are parallel to each other, a fixed cross beam structure 3, a pushing structure (not shown), a movable cross beam structure 2 and an inclined rod structure 8.
The bridging machine 4 can be connected to the upper side of the movable beam structure 2, the connection can be provided with a connecting structure to ensure at least one of assembling, positioning and fixing of the two, and the connection can only mean that the two are supported and pushed together. The movable cross beam 2 can comprise an upper cross beam 21, two ends of the upper cross beam 21 can be connected with the vertical beam structure 1 in a sliding way,
in one embodiment, the bridge girder erection machine 4 may be provided with a tetrafluoro slider 22 at a connecting position with the movable beam structure 2, and the bridge girder erection machine 4 may be horizontally translated with respect to the movable beam structure 2. Specifically, the tetrafluoro slide plate 22 is arranged on the joint surface of the upper cross beam 21 and the lower chord of the main truss of the bridge girder erection machine 4.
In a specific implementation process, the upper cross beam 21 may be made of HN700 × 300 steel.
In this embodiment, the fixed beam structure 3 is connected between the two vertical beam structures 1 along a horizontal reference direction, which may be, for example, the left-right direction shown in fig. 1.
The difference between the fixed beam structure 3 and the movable beam structure 2 is that; the fixed cross beam structure 3 and the vertical beam structure 1 are relatively fixed after being assembled, and the movable cross beam structure 2 and the vertical beam structure 1 can slide relatively after being assembled; furthermore, the movement of the movable beam structure 2 is directly linked to the movement of the bridge girder erection machine 4, and the movement of the fixed beam structure 3 is not directly linked to the movement of the bridge girder erection machine 4.
In one embodiment, the fixed beam structure 3 may include a middle beam 31 and two diagonal braces 32, the middle beam 31 includes a first fixed beam section 311 disposed along the reference direction, two second fixed beam sections 312 disposed along the reference direction, one of the second fixed beam sections 312 is connected between one end of the first fixed beam section 311 and its corresponding one of the vertical beam structures 1 along the reference direction, the other second fixed beam section 312 is connected between the other end of the first fixed beam section 311 and its corresponding other of the vertical beam structures 1 along the reference direction, an upper end of one diagonal brace 32 is connected to a lower side of each second fixed beam section 312, and a lower end of each diagonal brace 32 is connected to a corresponding one of the vertical beam structures 1 and/or the lower beam 7.
The stability of the fixed beam structure 3 can be ensured by the middle beam 31 and the inclined struts 32. Furthermore, since the middle cross beam 31 is formed by connecting the first fixed cross beam section 311 and the second fixed cross beam section 312, the diagonal brace 32 can further support the detachable cross beam section effectively.
Based on this support, the quantity that pushes away the structure can be two, and every pushes away the structure and sets up on a second fixed beam section.
It can be seen that, in the above embodiment, each pushing structure corresponds to one second fixed beam section 312, each second fixed beam section 312 corresponds to one inclined strut 32, and in other alternative embodiments, if the number of the pushing structures is four or more, there may be a plurality of inclined struts corresponding to the second fixed beam sections connected to the other second fixed beam sections.
In the specific implementation process, the middle cross beam 31 can adopt HN 500X 200 section steel, and then each cross beam section can be connected for separating, and the middle of the cross beam section can be disconnected, so that the prefabricated section broken beam can be hoisted to pass through, and only the middle part, namely the first fixed cross beam section 312, needs not to be entirely dismantled.
In the specific implementation process, HN 500X 200 section steel can be adopted as the inclined strut 32.
In this embodiment, the movable cross beam structure 2 is also connected between the vertical beam structures 1 along the reference direction, the movable cross beam structure 2 is located on the upper side of the fixed cross beam structure 3, and the movable cross beam structure 2 and the fixed cross beam structure 3 have a gap in the vertical direction. The pushing structure is mounted on the fixed beam structure 3, is located at the interval and is used for pushing the movable beam structure 2 to move vertically.
Through the top pushing structure, the movable beam structure 2 can be effectively pushed and supported. The jacking structure may include a jack, which may be embodied as a hydraulic jack. The top parts of the two jacks can be reinforced by stiffening steel plates, and the jack lifting stress safety of the 2 jacks of the upper beam can be ensured by combining the inclined struts 32.
In one embodiment, the opposite inner sides of the vertical beam structure 1 are provided with guide structures for guiding the movable cross beam structure 2 to move in the vertical direction. Any means capable of achieving a single direction of motion limit in the art may be applied to this embodiment.
In the specific implementation process, the guide structure comprises vertical grooves 12 which are vertically arranged, and limiting plates can be welded between the grooves. Furthermore, this vertical groove 12 can be formed for the structure of the medium steel itself in the vertical beam structure 1, and then utilize the limiting plate to extend this numerical value groove 12 along the reference direction, and vertical groove 12 also can be for setting up in the vertical beam structure 1 inboard.
In this embodiment, the lower end of the vertical beam structure 1 is connected to the bottom frame structure 5.
In one embodiment, the vertical beam structure 1 includes three vertical beam sections 11 connected in sequence along the vertical direction, the vertical beam section 11 at the bottom of the three vertical beam sections 11 is connected to the bottom frame structure, the vertical beam section 11 in the middle of the three vertical beam sections 11 is connected to the fixed beam structure 3, two second fixed beam sections 312 of the middle beam can be connected specifically, the vertical beam section 11 at the top of the three vertical beam sections 11 can be connected to the movable beam structure 2, and the connection can be disassembled between the two adjacent vertical beam sections 11.
It can be seen that in use of the apparatus, the apparatus can be divided into three vertical beam sections, and three horizontal beam sections, for example, the movable beam structure 2 and the top vertical beam section 11 can be separated from other parts and then hoisted separately.
In the specific implementation process, the vertical beam structure 1 can adopt HN 700X 300 section steel.
In this embodiment, the diagonal member structure 8 connects the vertical beam structure 1 and the bottom frame structure 5 in an oblique manner, and the bottom frame structure 5 is connected to the segment beam 6. The diagonal bar structure 8 may in particular connect the central vertical beam section of the vertical beam structure 1.
In one embodiment, the sway bar structure 8 includes a sway bar steel pipe 81, an upper end telescopic part 82 disposed at an upper end of the sway bar steel pipe 81, and a lower end telescopic part 83 disposed at a lower end of the sway bar steel pipe 81, the upper end telescopic part 82 is connected to the vertical beam structure 1 through a first rotation axis, that is, connected to the vertical beam section in the middle of the vertical beam structure 1, the lower end telescopic part 83 is connected to the bottom frame structure 5 through a second rotation axis, the first rotation axis and the second rotation axis are both parallel to the reference direction, and the upper end telescopic part 82 and the lower end telescopic part 83 are both capable of extending and retracting along the length direction of the sway bar steel pipe 81 relative to the sway bar steel pipe 81.
Through the stretching and the rotation, the requirement of position adjustment can be met.
Fig. 3 is a schematic structural diagram of an oblique rod structure according to an embodiment of the present invention.
Referring to fig. 3, in a specific implementation process, the upper end telescopic member 82 includes an upper end screw 823, the upper end screw 823 is inserted into the upper end of the inclined steel pipe 81, an upper end nut 824 is further disposed at the upper end of the inclined steel pipe 81, and a thread of the upper end screw 823 is matched with a thread of the upper end nut 824, so that the upper end screw 823 is driven to extend and retract relative to the inclined steel pipe 81 through relative rotation between the upper end nut 824 and the upper end screw 823. Wherein, the upper end screw 823 can be connected to the upper end lug 821, and the upper end lug 821 can be connected to the vertical beam structure 1 through a bolt.
Similar to the upper end telescopic member 82, the lower end telescopic member 83 includes a lower end screw 833, the lower end screw 833 is inserted into the lower end of the inclined steel tube 81, a lower end nut 832 is further disposed at the lower end of the inclined steel tube 81, and the thread of the lower end screw 833 is matched with the thread of the lower end nut 832, so that the lower end screw 832 is driven to extend and retract relative to the inclined steel tube 81 through the relative rotation between the lower end nut 832 and the lower end screw 833. The lower screw 833 can be connected to the lower tab 831, and the lower tab 831 can be connected to the bottom frame structure 5 by a latch.
In the specific implementation process, the steel pipe 81 with the inclined rod can be a phi 380 × 10 steel pipe.
In one embodiment, the device may further include a lower cross member 7, the lower cross member 7 is connected between the two vertical beam structures 1 along the reference direction, and the lower cross member 7 is located at the lower side of the fixed cross member structure 3.
In a specific implementation process, the lower cross beam 7 can be made of 32# H-shaped steel.
FIG. 4 is a first schematic structural diagram of a bottom frame structure according to an embodiment of the present invention; fig. 5 is a second schematic structural diagram of the bottom frame structure according to an embodiment of the present invention.
Referring to fig. 4 and 5, in one embodiment, the bottom frame structure 5 includes two rectangular frames 51, the number of the rectangular frames 51 may be two, and each rectangular frame 51 corresponds to one mullion structure 1 and one diagonal rod structure 8. The rectangular frame 51 includes bottom frame section steels sequentially enclosed, which may specifically include a first bottom frame section steel 511 and a second bottom frame section steel 512 perpendicular to each other.
Wherein, if underframe structure 5 tie beam structure, specifically be the segmental beam, underframe structure 5 still includes two sets of rod irons 52, and at least one underframe shaped steel in every rectangle frame is passed by a set of the rod iron specifically can be for being close to second underframe shaped steel 512 of another rectangle frame 51, rod iron 52 still inserts in the hole for hoist 61 of segmental beam 6 of rectangle frame downside, it has hole sealing concrete 62 to fill in the hole for hoist 61.
In the specific implementation process, the bottom frame steel can be HN500 × 200 steel, which can be welded into a frame to obtain a rectangular frame 51, and when the device is used in a 0# block, the bottom frame steel can be welded and anchored with the embedded steel plate, and in the embodiment shown in fig. 5, the bottom frame steel can be anchored with the hoisting holes 61 of the segment beam 6 through the steel rods 52.
The embodiment widens the application range of the construction method of the bridge cantilever assembling and erecting machine, and is suitable for the application scene that the bridge erecting machine on the large-gradient bridge needs to move the front supporting leg device for many times.
According to the scheme, the problem that when the bridge with the prefabricated structure of the large longitudinal slope is assembled by the bridge girder erection machine through the traveling cantilevers is solved, the supporting legs need to be moved for many times and the hole of the bridge girder erection machine is formed, the complex process difficulty that the supporting height needs to be adjusted continuously is solved, the huge economic cost for hoisting the prefabricated section girder cannot be influenced is avoided, and the application range of the bridge cantilever assembling process is greatly expanded.
In a specific implementation process, the device can be split into the following parts:
an upper part: a vertical beam section 11 comprising the movable cross beam structure 2, the top of the vertical beam structure 1, which may form the upper part of the H;
middle part: the beam comprises vertical beam sections 11 at the middle part and the bottom part of a vertical beam structure 1, a fixed cross beam structure 3 and a lower cross beam 7;
the lower part: comprises a bottom frame structure 5;
the diagonal rod part: including a diagonal bar structure 8.
In summary, the auxiliary leg device of the bridge erecting machine provided by the embodiment can realize height adjustment through the fixed beam structure, the movable beam structure and the pushing structure, and further can freely adjust the height of the auxiliary leg device according to the current height requirement. For example: the position of the auxiliary supporting leg device can be changed when the bridge with the large longitudinal slope is constructed, the height of the auxiliary supporting leg device can be adjusted adaptively, and construction requirements of different beams and through holes are met.
This embodiment alternative also guarantees vertical height adjustment through limit structure such as vertical groove and limiting plate to the stability of supplementary landing leg device when adjusting.
In this embodiment alternative, because the position of auxiliary leg device need change, still can form corresponding crossbeam structure, perpendicular roof beam structure through the connection between crossbeam section, the perpendicular roof beam section etc. and then, can be convenient for crossbeam structure, perpendicular roof beam structure's dismantlement, removal and installation use.
The embodiment also provides a bridge construction method based on the auxiliary supporting leg device, which comprises the following steps:
disassembling the auxiliary supporting leg device of the bridge girder erection machine;
hoisting the detached auxiliary supporting leg device of the bridge girder erection machine to the position of the current target block;
and assembling the auxiliary supporting leg device of the bridge girder erection machine hoisted to the target block position, and supporting the auxiliary supporting leg device of the bridge girder erection machine between the target block and the bridge girder erection machine through the pushing of a pushing structure of the auxiliary supporting leg device, so that the following related upper part and middle part or all of the related upper part and the related middle part are positioned on the bridge deck.
After the auxiliary supporting leg device of the bridge girder erection machine is assembled and pushed by the pushing structure, the auxiliary supporting leg device of the bridge girder erection machine is supported between the target structure and the bridge girder erection machine, and/or: before the auxiliary leg device of the bridge girder erection machine is disassembled, the method can further comprise the following steps:
and translating the auxiliary support leg device of the bridge girder erection machine.
Furthermore, position changes of various positions of the auxiliary supporting leg device of the bridge girder erection machine can be realized through hoisting and translation.
The auxiliary device for splitting the bridge girder erection machine can be split into the following four parts:
an upper part: a vertical beam section 11 comprising the movable cross beam structure 2, the top of the vertical beam structure 1, which may form the upper part of the H;
middle part: the beam comprises vertical beam sections 11 at the middle part and the bottom part of a vertical beam structure 1, a fixed cross beam structure 3 and a lower cross beam 7;
the lower part: comprises a bottom frame structure 5;
the diagonal rod part: including a diagonal bar structure 8.
Fig. 6a to 6n are schematic diagrams of construction links in a construction process of a bridge construction method using an auxiliary leg supporting device according to an embodiment of the present invention.
Referring to fig. 6a, after the 4# girder of the present bridge is assembled, the first leg 101 may be ready to be moved from the 2# girder to the 4# girder, before that, the auxiliary leg device 102 may be lifted by a truck crane section by section, and after the crane is lifted, the first leg 101 may be assembled and anchored on the bridge floor, and then the upper beam supports the bridge girder erection machine by a jacking structure such as a hydraulic jack, and a rigid wedge may be supported by the hydraulic jack again to ensure stable support, so that the first leg 101 may be moved forward based on the stable support.
In one example, after the first leg 101 is in place and adjusted, the upper and middle beams of the removable auxiliary leg assembly 102 are placed on the deck to complete the assembly of the beam at a further stage.
Referring to fig. 6b, after the 6# block beam is assembled, the auxiliary leg device 102 is integrally hoisted to the 3# block beam by using a crown block, and the front leg is moved forward after being supported in the same manner as above.
Referring to fig. 6c, before assembling the 10# block beam, the auxiliary leg device 102 is hoisted to the side span 6' # block beam by a crane in segments, installed and supported, and then the third leg 104 on the side pier is moved to the beam of the 19# pier.
Referring to fig. 6d, before the construction of the through hole of the bridge girder erection machine, the auxiliary leg device 102 on the 6 ' # beam is moved to the 2 ' # beam for supporting, and then the third leg 104 moved to the beam is moved to the 3 ' # beam.
Referring to fig. 6e, the auxiliary leg device 102 on the 2' # beam is moved to the middle span 5# beam for supporting, and the front leg, i.e. the first leg 101 on the 6# beam, is moved to the 8#, 9# beams.
Referring to fig. 6f and fig. 6g, during the construction of the bridge girder erection machine through the hole, the auxiliary leg device 102 on the 5# block girder is lifted to the side span in a sectional manner, the truck crane can be installed on the 0# block girder of the west 18# pier, when the main truss moves above the truck crane, the main truss is lifted without downward deflection, and the lifting force is determined by monitoring the counter force of the auxiliary leg devices on the 8# and 9# block girders. Once supported, the main truss continues to advance thereon until the third leg 104 is hoisted to pier # 18.
Referring to fig. 6h, 6i and 6j, after the third leg 104 of the 18# pier is adjusted, the auxiliary leg device 102 can be suspended to the 2# beam of the east 19# pier through the sectional via of the crown block to be supported, and the main girder moves forward until the second leg 103 on the 0# block of the 19# pier is separated.
Referring to fig. 6k, fig. 6l, fig. 6m and fig. 6n, when the main truss continues to move forward to the tail part on the auxiliary leg device 102, the auxiliary leg device 102 is hung on the lengthened section and moves forward to the 8# block beam together with the main truss for supporting, the first leg 101 is subjected to hole passing, then the auxiliary leg device 102 is removed and installed to the west side, and the supporting operation is performed as the assembling construction of the east side.
The process can also be understood with reference to the steps referred to above.
In summary, according to the auxiliary leg device of the bridge girder erection machine and the bridge construction method based on the auxiliary leg device, the movable beam structure and the bridge girder erection machine connected with the movable beam structure can be driven to move along the vertical direction through the fixed beam structure, the movable beam structure and the pushing structure. For example: the position of the auxiliary supporting leg device can be changed by the aid of the bridge construction device when the bridge with the large longitudinal slope is constructed, the supporting height of the auxiliary supporting leg device can be adjusted adaptively, and construction requirements of different beams and through holes are met.
The alternative of the invention also ensures the height adjustment in the vertical direction and the stability of the auxiliary leg device during adjustment through the limit structures such as the vertical groove and the limit plate.
In the alternative scheme of the invention, as the position of the auxiliary supporting leg device needs to be changed, the corresponding beam structure and the vertical beam structure can be formed through the connection between the beam sections, the vertical beam sections and the like, and further, the disassembly, the movement, the installation and the use of the beam structure and the vertical beam structure can be facilitated.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A bridge construction method based on an auxiliary supporting leg device is characterized by comprising the following steps:
erecting a bridge girder erection machine on a bridge pier, wherein the bridge girder erection machine comprises a first supporting leg, a second supporting leg and a third supporting leg, and the first supporting leg, the second supporting leg and the third supporting leg are sequentially supported below the bridge girder erection machine along the construction direction;
constructing by using the bridge girder erection machine;
supporting an auxiliary leg arrangement between the first leg and the second leg, and a distance between the auxiliary leg arrangement and the first leg is less than a distance between the auxiliary leg arrangement and the second leg;
advancing the first support leg in the construction direction;
continuing construction by using the bridge girder erection machine;
advancing the first support leg in the construction direction; advancing the auxiliary leg device in a construction direction with the auxiliary leg device supported between the first leg and the second leg, the distance between the auxiliary leg device and the first leg being less than the distance between the auxiliary leg device and the second leg;
moving the auxiliary leg means between the second leg and the third leg, and the distance between the auxiliary leg means and the second leg is greater than the distance between the auxiliary leg means and the third leg; advancing the third support leg in the construction direction; continuing construction by using the bridge girder erection machine;
advancing the auxiliary leg device in the construction direction; advancing the third leg in a construction direction and a distance between the auxiliary leg device and the second leg is greater than a distance between the auxiliary leg device and the third leg;
moving the auxiliary leg means between the first leg and the second leg and the distance between the auxiliary leg means and the first leg is less than the distance between the auxiliary leg means and the second leg; advancing the first support leg in the construction direction;
moving the auxiliary leg support device to a first pier to be drilled; the bridge girder erection machine moves towards the first pier to be drilled; moving the third support leg to the first pier to be drilled;
moving the auxiliary leg arrangement between the first leg and the second leg; the bridge girder erection machine moves to a second pier to be drilled;
moving the second support leg to the second pier to be subjected to hole passing, wherein the direction in which the first pier to be subjected to hole passing points to the second pier to be subjected to hole passing is the construction direction; moving the first support leg to the first pier to be drilled; the bridge girder erection machine spans the first pier to be drilled and the second pier to be drilled, and construction is continued by using the bridge girder erection machine;
wherein, the auxiliary supporting leg device comprises a bottom frame structure, two vertical beam structures which are parallel to each other, a fixed beam structure, a pushing structure, a movable beam structure and an inclined rod structure, the bridge erecting machine is connected to the upper side of the movable beam structure, the fixed beam structure is connected between the two vertical beam structures along the horizontal reference direction, the movable beam structure is also connected between the vertical beam structures along the reference direction, the movable beam structure is positioned at the upper side of the fixed beam structure, the movable beam structure and the fixed beam structure have a gap along the vertical direction, the pushing structure is arranged on the fixed beam structure and is positioned at the gap, the pushing structure is used for pushing the movable beam structure to move along the vertical direction, the lower end of the vertical beam structure is connected with the bottom frame structure, and the inclined rod structure is obliquely connected with the vertical beam structure and the bottom frame structure, the bottom frame structure is connected to a beam structure or a pier structure.
2. A method according to claim 1, characterised in that opposite inner sides of the vertical beam structure are provided with guide structures for guiding the movable transverse beam structure in a vertical direction.
3. The method according to claim 1, wherein the vertical beam structure comprises three vertical beam sections which are sequentially connected in the vertical direction, the bottom vertical beam section of the three vertical beam sections is connected with the bottom frame structure, the middle vertical beam section of the three vertical beam sections is connected with the fixed cross beam structure, the top vertical beam section of the three vertical beam sections is connected with the movable cross beam structure, and the adjacent two vertical beam sections are detachably connected.
4. The method according to any one of claims 1 to 3, wherein the fixed beam structure comprises a middle beam and two braces, the middle beam comprises a first fixed beam section arranged along the reference direction, two second fixed beam sections arranged along the reference direction, one of the second fixed beam sections is connected between one end of the first fixed beam section and its corresponding one of the vertical beam structures along the reference direction, the other second fixed beam section is connected between the other end of the first fixed beam section and its corresponding other of the vertical beam structures along the reference direction, the lower side of each second fixed beam section is connected to the upper end of one of the braces, and the lower end of each brace is connected to the corresponding one of the vertical beam structures and/or the lower beam.
5. The method of claim 4, wherein the number of ejection structures is two, each ejection structure being disposed on one second fixed beam section.
6. The method according to any one of claims 1 to 3, wherein the sway bar structure comprises a sway bar steel pipe, an upper end telescopic member provided at an upper end of the sway bar steel pipe, and a lower end telescopic member provided at a lower end of the sway bar steel pipe, the upper end telescopic member being rotatably connected to the vertical beam structure by a first rotation axis, the lower end telescopic member being rotatably connected to the base frame structure by a second rotation axis, the first rotation axis and the second rotation axis being parallel to the reference direction, the upper end telescopic member and the lower end telescopic member being each capable of telescoping relative to the sway bar steel pipe along a length direction of the sway bar steel pipe.
7. The method of claim 6, wherein the upper end telescopic member comprises an upper end screw inserted into an upper end of the diagonal steel pipe, the upper end of the diagonal steel pipe is further provided with an upper end nut, threads of the upper end screw are matched with threads of the upper end nut, so that the upper end screw is driven to be telescopic relative to the diagonal steel pipe through relative rotation of the upper end nut and the upper end screw;
the lower end telescopic part comprises a lower end screw rod, the lower end screw rod is inserted into the lower end of the inclined rod steel pipe, a lower end nut is further arranged at the lower end of the inclined rod steel pipe, threads of the lower end screw rod are matched with threads of the lower end nut, and the lower end screw rod is driven to stretch relative to the inclined rod steel pipe through relative rotation of the lower end nut and the lower end screw rod.
8. A method according to any one of claims 1 to 3, wherein the base frame structure comprises two rectangular frames comprising base frame steel which in turn enclose.
9. A method according to any one of claims 1 to 3, wherein the auxiliary leg arrangement further comprises a lower cross member connected between the two vertical beam structures in the reference direction, the lower cross member being located on the underside of the fixed cross member structure.
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| CN204112244U (en) * | 2014-09-19 | 2015-01-21 | 河南省公路工程局集团有限公司 | Widen bridge beam slab and thrustor is installed |
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