CN110205948B - Wide bridge girder erection machine and erection method thereof - Google Patents
Wide bridge girder erection machine and erection method thereof Download PDFInfo
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- CN110205948B CN110205948B CN201910631876.9A CN201910631876A CN110205948B CN 110205948 B CN110205948 B CN 110205948B CN 201910631876 A CN201910631876 A CN 201910631876A CN 110205948 B CN110205948 B CN 110205948B
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- 230000007246 mechanism Effects 0.000 claims abstract description 23
- 230000009471 action Effects 0.000 claims abstract description 5
- 210000001364 upper extremity Anatomy 0.000 claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims description 20
- 239000010959 steel Substances 0.000 claims description 20
- 238000005096 rolling process Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 17
- 238000009434 installation Methods 0.000 abstract description 4
- 239000010720 hydraulic oil Substances 0.000 abstract 2
- 239000002131 composite material Substances 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 6
- 239000004567 concrete Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
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- 238000005452 bending Methods 0.000 description 1
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- 239000011121 hardwood Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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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 belongs to the technical field of bridge erection construction, and discloses a wide bridge girder erection machine and an erection method thereof, wherein the wide bridge girder erection machine comprises a girder, a crown block traversing mechanism, a front supporting leg, a middle supporting leg and a tail supporting leg; the front support legs are arranged at the front end of the main beam, the front support legs can longitudinally move on a longitudinally moving track of the main beam, the upright posts of the front support legs adopt a segmented structure of an upper section and a lower section, the front support legs comprise a group of first front support legs and a group of second front support legs, and the first front support legs are positioned in front of the second front support legs; the first front support leg is provided with a transverse moving track, the upper sections of the upright posts of the first front support leg and the second front support leg are respectively provided with a hydraulic oil cylinder, and under the action of the hydraulic oil cylinders, the upper sections of the upright posts of the first front support leg are connected with or separated from the upright posts of the lower section of the first front support leg; by utilizing the bridge girder erection machine for construction, the additional stress generated during the back installation of the front cross beam is avoided, the overhead operation is reduced, the safety is improved, and the construction progress is faster.
Description
Technical Field
The invention relates to the technical field of bridge erection construction, in particular to a wide bridge girder erection machine and an erection method thereof.
Background
The bridge girder erection machine is applied to construction of a plurality of bridge superstructure, and the bridge girder is a widely used structural form, and the main components of the bridge girder comprise: the foundation, the abutment, the precast beam and the bridge deck are respectively arranged from bottom to top. The bridge girder erection machine is key equipment in the construction process, and has the function of hoisting the precast girders which are already poured to the appointed installation positions on the pier. In addition, since the bridge is usually composed of multiple spans, and the hoisting of the precast beams can only be performed by each span, the bridge girder erection machine has the function of hoisting the precast beams and also has the capability of walking forward, namely the so-called span hole capability. Prestressed concrete beams or steel box beams; through in-site and off-site transportation to a hoisting site, corresponding hoisting machinery and hoisting processes are adopted according to different situations of the site, the steel beams are hoisted and installed on supports of the pier according to a designed sequence, and finally the beams are tied into simply supported beams or are converted into continuous beams through force system according to design requirements.
In recent years, a steel-concrete composite beam structure is a novel structure developed on the basis of a steel structure and a reinforced concrete structure, steel beams and concrete plates are connected into a whole through connecting pieces to jointly work as a bending member, and under the action of load, the concrete plates are pressed and the steel beams are pulled, so that the respective material characteristics of the steel and the concrete are fully exerted. At present, the common sectional hoisting and hanging construction scheme has the defects of low assembly precision, high risk of overhead operation, slow construction progress and the like; the pushing scheme is used for the bridge on the S curve, three-way pushing is needed, the pushing difficulty is high, the technical requirement is high, the temporary structure is high, the safety risk is high, the construction cost is high and the like, but the construction schemes cannot be suitable for hoisting the reinforced concrete composite beam, because the steel beams in the reinforced concrete composite beam are transversely and longitudinally crossed, the front ends of the steel beams exceed the capping beam, and the front ends of the steel beams are sealed, the front supporting leg mechanism of the existing bridge girder erection machine cannot span the front cross beam in the steel beams, and the integral hole hoisting of the reinforced concrete composite beam cannot be met.
Accordingly, there is a need in the art for a new wide body bridge girder erection machine and a method for erecting the same to solve the above-mentioned problems.
Disclosure of Invention
In order to solve the problem that a front supporting leg mechanism of the existing bridge girder erection machine cannot span a front cross beam in a reinforced concrete composite girder and cannot meet the requirement of integral hole hoisting of the reinforced concrete composite girder, the invention provides a wide bridge girder erection machine which comprises a main girder, a crown block traversing mechanism, a front supporting leg, a middle supporting leg and a tail supporting leg; the main beam is a main stress part, the top of the main beam is provided with a track for the longitudinal walking of the crown block, and the lower part of the main beam is provided with a longitudinal moving track for the longitudinal movement of the main beam, the front supporting leg, the middle supporting leg and the tail supporting leg; the main beam is provided with a crown block cross beam, and a cross rail for the cross movement of the crown block cross movement mechanism is arranged on the crown block cross beam so as to meet the requirement of beam falling alignment; the crown block is arranged on the crown block traversing mechanism; the structure of the middle supporting leg is the same as that of the tail supporting leg, telescopic column core column sleeve structures are arranged in the columns of the middle supporting leg and the tail supporting leg, hydraulic cylinders are arranged in the column core column sleeve structures, and the heights of the middle supporting leg and the tail supporting leg are adjusted by jacking column cores through the hydraulic cylinders; the telescopic upright posts jack up the upright post cores through the hydraulic cylinders and slide in the post sleeves to realize height adjustment, and pin shafts are inserted to fix the post cores and the post sleeves after the adjustment is in place, so that the hydraulic cylinders do not bear load any more; the tail support leg is arranged at the tail part of the main beam, and a first connecting cross beam is arranged at the bottom of the tail support leg; the middle supporting leg is arranged in the middle of the main beam and is provided with a second connecting cross beam; the front support leg is arranged at the front end of the main beam, the front support leg can longitudinally move on a longitudinally moving track of the main beam, the upright post of the front support leg adopts a sectional structure of an upper section and a lower section, the upper section of the upright post of the front support leg is provided with a hydraulic cylinder, and the upper section and the lower section of the front support leg are connected or separated under the action of the hydraulic cylinder.
In the preferable technical scheme of the wide bridge girder erection machine, the front supporting legs comprise two first front supporting legs and two second front supporting legs, and the two first front supporting legs are positioned in front of the second front supporting legs and are arranged at the front ends of the main girders side by side.
In the preferable technical scheme of the wide bridge girder erection machine, the lower section of the first front supporting leg and the lower section of the second front supporting leg are connected through the front supporting leg connecting mechanism, so that the lower section of the first front supporting leg and the lower section of the second front supporting leg are connected into a whole.
In the preferred technical scheme of the wide bridge girder erection machine, the bridge girder erection machine further comprises temporary supporting legs, the temporary supporting legs are arranged at the front ends of the main girders and located at the front ends of the first front supporting legs, the temporary supporting legs can longitudinally move on longitudinally moving tracks at the lower parts of the main girders, when the bridge girder erection machine is overstretched, due to the fact that the weight of the front supporting legs is too large, too long cantilever formed at the front ends of the main girders leads to too large deflection, and the temporary supporting legs bear temporary supporting effects on the main girders on front piers in a spanning hole.
In the preferable technical scheme of the wide bridge girder erection machine, the front supporting leg, the middle supporting leg and the tail supporting leg comprise respective anti-rolling wheel groups, when the bottoms of the supporting legs are grounded, the main girder can longitudinally move relative to the supporting legs through the anti-rolling wheel groups, and under the condition that at least one of the front supporting leg and the tail supporting leg of the middle supporting leg is suspended, other supporting legs except the suspended supporting leg can longitudinally move relative to the main girder through the anti-rolling wheel groups.
In the preferable technical scheme of the wide bridge girder erection machine, the bridge girder erection machine further comprises a guide girder, wherein the guide girder comprises a front guide girder and a rear guide girder, the front guide girder is arranged at the front end of the main girder, the rear guide girder is arranged at the tail end of the main girder, and the safety guide function is achieved when the bridge girder erection machine passes through a hole.
In the preferable technical scheme of the wide bridge girder erection machine, the crown block comprises a first crown block and a second crown block, locking rods are arranged on the first crown block and the second crown block, and hydraulic cylinders are arranged at the tail ends of the locking rods.
In the preferable technical scheme of the wide bridge girder erection machine, the bridge girder erection machine further comprises a first girder transporting trolley and a second girder transporting trolley, and girder transporting is carried out through the first girder transporting trolley and the second girder transporting trolley in the bridge girder erection process.
On the other hand, the invention also provides an erection method applied to the wide body bridge girder erection machine, which comprises the following steps:
S1, the upper sections of a first front supporting leg and a second front supporting leg are respectively connected with the lower section, a tail supporting leg is lifted and leaves a bridge deck, a first crown block and a second crown block run to the tail part of a main girder, and preparation work before a bridge girder erection machine spans a hole is completed;
s2, moving the main beam and the tail support leg forward to the rear of the middle support leg through a first front support leg, a second front support leg and a middle support leg reverse roller group;
S3, extending the tail support legs to enable the tail support legs to be in a supporting state and to support the height of the main beam, separating the middle support legs from the ground, and enabling the middle support legs to be in a suspended state;
S4, driving the middle support leg to move forwards to a first designated position through the middle support leg reverse roller set, and enabling the middle support leg to be in a stressed state in a landing mode through shrinkage of the tail support leg, wherein the tail support leg is suspended;
S5, moving the main beam forwards to a temporary support leg to a second appointed position of the capping beam through a first front support leg, a second front support leg and a middle support leg anti-rolling wheel set, at the moment, moving the tail support leg forwards to the rear of the middle support leg along with the main beam, and stretching the tail support leg to enable the tail support leg to be stressed on the ground, wherein the middle support leg is suspended;
s6, the first front supporting leg and the second front supporting leg shrink to enable the temporary supporting leg to fall on the bent cap, and after the temporary supporting leg can safely bear force, the first front supporting leg and the second front supporting leg continue to shrink until the first front supporting leg and the second front supporting leg are suspended;
s7, the middle supporting leg moves forwards to a designated position III through the reverse roller set, the tail supporting leg oil cylinder contracts to enable the middle supporting leg to be stressed, and the first crown block and the second crown block move forwards to a position between the middle supporting leg and the second front supporting leg and close to the position of the middle supporting leg;
S8, driving by a counter roller set of the first front supporting leg and the second front supporting leg, enabling the first front supporting leg and the second front supporting leg to move forwards to a designated position IV of the front end cover beam, enabling the first front supporting leg and the second front supporting leg to extend, enabling the first front supporting leg and the second front supporting leg to bear force and enabling the temporary supporting leg to be suspended;
S9, driving the main beam to move forwards to a designated position five through the first front supporting leg, the second front supporting leg and the middle supporting leg counter roller set, enabling the tail supporting leg to stretch to enable the tail supporting leg to be stressed, supporting the bridge girder erection machine by the first front supporting leg, the second front supporting leg, the middle supporting leg and the tail supporting leg at the same time, achieving a next girder crossing state, and completing bridge hole crossing by the bridge girder erection machine. It can be appreciated by those skilled in the art that in the preferred technical scheme of the invention, the bridge girder erection machine has the advantages that if the existing bridge girder erection machine is used for integrally hoisting the steel girders with the hoisting length longer than the span and the front end closed, the front cross girder is installed after the steel girders are installed, the bridge girder erection machine is used for construction, the additional stress generated during the rear installation of the front cross girder is avoided, the bridge girder formation state is the same as the design, the overhead operation is reduced, the safety is improved, the front cross girder is installed in a girder assembling field, the construction progress is faster, and the construction difficulty of integrally hoisting the steel girders of the type is solved. The width of the bridge girder erection machine is reduced by reducing the length of the cross beam, so that the bridge girder erection machine can pass through a tunnel to perform construction operation while meeting the lifting requirement of a T beam, and the application range of the bridge girder erection machine is enlarged.
Drawings
Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a bridge girder erection machine according to the present invention;
FIG. 2 is a schematic structural view of the bridge girder erection machine at A-A;
FIG. 3 is a schematic structural view of the bridge girder erection machine at the position B-B;
FIG. 4 is a schematic structural view of the bridge girder erection machine at C-C;
FIG. 5 is a schematic structural view of the bridge girder erection machine at D-D;
FIG. 6 is a schematic structural view of the bridge girder erection machine at E-E;
FIG. 7 is a schematic view of the front leg of the bridge girder erection machine according to the present invention;
FIG. 8 is a flow chart of a method for erecting a cross-hole of the bridge girder erection machine of the invention;
Reference numerals: 1. a main beam; 2. a steel beam; 3. a front leg; 31. a first front leg; 311. an upper section of the first front leg; 312. a first front leg lower section; 32. a second front leg; 321. an upper section of the second front leg; 322. a second front leg lower section; 33. a front leg connection mechanism; 4. middle supporting legs; 5. tail support legs; 6. temporary support legs; 7. a first crown block; 8. a second crown block; 9. a front guide beam; 10. and a rear guide beam.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, terms such as "medium," "upper," "lower," "transverse," "inner," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific 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.
Furthermore, it should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
The bridge girder erection machine has the advantages that if the existing bridge girder erection machine is used for carrying out integral hoisting work of the steel girder with hoisting length larger than span and closed front end, the front cross girder is required to be installed after the steel girder erection is completed, the bridge girder erection machine is utilized for construction, additional stress generated during rear installation of the front cross girder is avoided, the bridge girder is in the same bridge formation state as the design, high-altitude operation is reduced, the bridge girder erection machine is safer, the front cross girder is installed in a girder erection field, and the construction progress is faster. The width of the bridge girder erection machine is reduced by reducing the length of the cross beam, so that the bridge girder erection machine can pass through a tunnel to perform construction operation while meeting the lifting requirement of a T beam, and the application range of the bridge girder erection machine is enlarged.
Specifically, as shown in fig. 1 to 7, the bridge girder erection machine of the invention comprises a girder 1, a crown block traversing mechanism, a front supporting leg 3, a middle supporting leg 4 and a tail supporting leg 5; the main beam 1 is a main stress component, a track is arranged at the top of the main beam 1 and used for the longitudinal walking of the crown block, and a longitudinal moving track used for the longitudinal movement of the main beam 1, the front supporting leg 3, the middle supporting leg 4 and the tail supporting leg 5 is arranged at the lower part of the main beam 1; the main beam 1 is provided with a crown block cross beam, and a cross rail for the cross movement of the crown block cross beam mechanism is arranged on the crown block cross beam so as to meet the requirement of beam falling alignment; the crown block is arranged on the crown block traversing mechanism; the structure of the middle supporting leg 4 is the same as that of the tail supporting leg 5, telescopic column core column sleeve structures are arranged in the columns of the middle supporting leg 4 and the tail supporting leg 5, hydraulic cylinders are arranged in the column core column sleeve structures, and the heights of the middle supporting leg 4 and the tail supporting leg 5 are adjusted by jacking column cores through the hydraulic cylinders; the telescopic upright posts jack up the upright post cores through the hydraulic cylinders and slide in the post sleeves to realize height adjustment, and pin shafts are inserted to fix the post cores and the post sleeves after the adjustment is in place, so that the hydraulic cylinders do not bear load any more; the tail support legs 5 are arranged at the tail parts of the main beams 1, and first connecting cross beams are arranged at the bottoms of the tail support legs 5; the middle supporting leg 4 is arranged in the middle of the main beam 1, and the middle supporting leg 4 is provided with a second connecting cross beam; the front supporting leg 3 is arranged at the front end of the main beam 1, the front supporting leg 3 can longitudinally move on a longitudinally moving track of the main beam 1, a column of the front supporting leg 3 adopts a sectional structure of an upper section and a lower section, hydraulic cylinders are arranged on the upper section of the column of the front supporting leg 3, and the upper section and the lower section of the front supporting leg 3 are connected or separated under the action of the hydraulic cylinders.
In the invention, the top of the main beam 1 is provided with a track for the traveling of the first crown block 7 and the second crown block 8, and the lower part of the main beam 1 is provided with a longitudinal moving track for the longitudinal movement of the main beam 1, the front supporting leg 3, the middle supporting leg 4 and the tail supporting leg 55. The lower plane of the track and the bridge deck or the abutment are supported by hard wood or steel piers, and a thin wood plate is added between the steel pad piers and the transverse rail for sliding. The supporting points of the track cannot be arranged on the beam body flange plates or the beam body longitudinal joints so as to prevent the beam body from being damaged; the electric control system comprises a distribution box, a control panel and a power supply system.
Preferably, as shown in fig. 2, the front leg 3 includes two first front legs 31 and two second front legs 32, and the two first front legs 31 are located in front of the second front legs 32 and are disposed side by side at the front end of the main beam 1.
Preferably, as shown in fig. 7, the lower section 312 of the first front leg 31 and the lower section 322 of the second front leg 32 are connected by the front leg connecting mechanism 33, so that the lower section 312 of the first front leg 31 and the lower section 322 of the second front leg 32 are connected as one body, improving the anti-capsizing ability.
Preferably, as shown in fig. 1, the bridge girder erection machine further includes a temporary supporting leg 6, where the temporary supporting leg 6 is disposed at the front end of the girder 1 and is located at the front end of the first front supporting leg 31, and the temporary supporting leg 6 can move longitudinally on a longitudinally moving track at the lower part of the girder 1, and when the bridge girder erection machine overstretches, due to excessive weight of the front supporting leg 3, the cantilever formed at the front end of the girder 1 during overstretches is excessively long, so that the deflection is excessively large, and the temporary supporting leg 6 bears the temporary supporting effect on the girder 1 on the pier in front in the hole.
Preferably, the crown block sideslip mechanism comprises a slow winch, a fixed pulley block, a steel wire rope, a shoulder pole movable pulley block and a traveling driving mechanism, and the crown block sideslip mechanism can enable a beam body to rise and fall and also enable a transverse rail of the crown block longitudinally-moving mechanism to run, so that the requirement of transverse alignment of the beam body is met.
Preferably, the front leg 3, the middle leg 4 and the tail leg 5 each comprise a respective counter roller set, the main beam 1 can move longitudinally relative to each leg by the counter roller set when the bottom of each leg is grounded, and each leg except for the suspended leg can move longitudinally relative to the main beam 1 by the counter roller set when at least one of the front leg 3 and the tail leg 5 of the middle leg 4 is suspended.
Preferably, the guide beam further comprises a front guide beam 9 and a rear guide beam 10, wherein the front guide beam 9 is arranged at the front end of the main beam 1, and the rear guide beam 10 is arranged at the tail end of the main beam 1 and plays a role in safety guide when a bridge girder erection machine passes through a hole.
Preferably, as shown in fig. 1, the crown block comprises a first crown block 7 and a second crown block 8, locking rods are arranged on the first crown block 7 and the second crown block 8, and hydraulic cylinders are arranged at the tail ends of the locking rods.
Preferably, the bridge girder erection machine further comprises a first girder transporting trolley and a second girder transporting trolley, and the girder transporting is carried out through the first girder transporting trolley and the second girder transporting trolley in the bridge girder erection process.
On the other hand, as shown in fig. 8, the invention also provides an erection method using the wide bridge girder erection machine, which comprises the following steps:
s1, the upper sections of a first front supporting leg 31 and a second front supporting leg 32 are respectively connected with the lower section, a tail supporting leg 5 is lifted to leave a bridge deck, a first crown block 7 and a second crown block 8 run to the tail part of a main beam 1, and the preparation work before the bridge girder erection machine spans holes is finished;
s2, the main beam 1 and the tail support leg 5 are moved forward to the rear of the middle support leg 4 through a first front support leg 31, a second front support leg 32 and a middle support leg 4 anti-rolling wheel set;
S3, the tail support legs 5 are stretched to enable the tail support legs 5 to be in a supporting state, the height of the main beam 1 is increased, the middle support legs 4 are separated from the ground, and the middle support legs 4 are in a hanging state;
S4, driving the middle supporting leg 4 to move forwards to a first designated position through a middle supporting leg 4 counter roller set, and enabling the tail supporting leg 5 to shrink so that the middle supporting leg 4 is in a stressed state while the tail supporting leg 5 is suspended;
S5, moving the main beam 1 forwards to a temporary support leg 6 to a cover beam appointed position II through a first front support leg 31, a second front support leg 32 and a middle support leg 4 reverse roller group, at the moment, moving the tail support leg 5 forwards to the rear of the middle support leg 4 along with the main beam 1, and stretching the tail support leg 5 to enable the tail support leg 5 to be stressed in a grounding mode, wherein the middle support leg 4 is suspended;
S6, the first front supporting leg 31 and the second front supporting leg 32 shrink, so that the temporary supporting leg 6 falls on the capping beam, and after the temporary supporting leg 6 can be safely stressed, the first front supporting leg 31 and the second front supporting leg 32 continue to shrink until the first front supporting leg 31 and the second front supporting leg 32 are suspended;
s7, the middle supporting leg 4 moves forwards to a designated position III through the reverse roller set, the tail supporting leg 5 oil cylinder contracts to enable the middle supporting leg 4 to bear force, and the first crown block 7 and the second crown block 8 move forwards to a position between the middle supporting leg 4 and the second front supporting leg 32 and close to the position of the middle supporting leg 4;
S8, driving by a counter roller set of the first front supporting leg 31 and the second front supporting leg 32, enabling the first front supporting leg 31 and the second front supporting leg 32 to move forwards to a front end cover beam appointed position IV, enabling the first front supporting leg 31 and the second front supporting leg 32 to stretch, enabling the first front supporting leg 31 and the second front supporting leg 32 to bear force and enabling the temporary supporting leg 6 to be suspended;
S9, driving the main beam 1 to move forwards to a designated position five through the first front supporting leg 31, the second front supporting leg 32 and the middle supporting leg 4 counter roller set, enabling the tail supporting leg 5 to stretch to enable the tail supporting leg 5 to be stressed, simultaneously supporting the bridge girder erection machine through the first front supporting leg 31, the second front supporting leg 32, the middle supporting leg 4 and the tail supporting leg 5, achieving the next girder erection 2 crossing state, and completing bridge hole crossing through the bridge girder erection machine.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
Claims (8)
1. The erection method of the wide bridge girder erection machine is characterized by comprising the following steps of:
s1, the upper sections of a first front supporting leg and a second front supporting leg are respectively connected with the lower section, a tail supporting leg is lifted and leaves a bridge deck, a first crown block and a second crown block run to the tail part of a main girder, and preparation work before a bridge girder erection machine spans a hole is completed;
S2, moving the main beam and the tail support leg forward to the rear of the middle support leg through a first front support leg, a second front support leg and a middle support leg reverse roller group;
S3, extending the tail support legs to enable the tail support legs to be in a supporting state and to support the height of the main beam, separating the middle support legs from the ground, and enabling the middle support legs to be in a suspended state;
S4, driving the middle support leg to move forwards to a first designated position through the middle support leg reverse roller set, and enabling the middle support leg to be in a stressed state in a landing mode through shrinkage of the tail support leg, wherein the tail support leg is suspended;
S5, moving the main beam forwards through the first front supporting leg, the second front supporting leg and the middle supporting leg anti-rolling wheel set to enable the temporary supporting leg to reach a second appointed position of the bent cap, at the moment, moving the tail supporting leg forwards to the rear of the middle supporting leg along with the main beam, and enabling the tail supporting leg to stretch to enable the tail supporting leg to be stressed on the ground, wherein the middle supporting leg is suspended;
s6, the first front supporting leg and the second front supporting leg shrink to enable the temporary supporting leg to fall on the bent cap, and after the temporary supporting leg can safely bear force, the first front supporting leg and the second front supporting leg continue to shrink until the first front supporting leg and the second front supporting leg are suspended;
S7, the middle supporting leg moves forwards to a designated position III through the reverse roller set, the tail supporting leg oil cylinder contracts to enable the middle supporting leg to be stressed, and the first crown block and the second crown block move forwards to a position between the middle supporting leg and the second front supporting leg and close to the position of the middle supporting leg;
S8, driving the first front supporting leg and the second front supporting leg by a counter roller group of the first front supporting leg and the second front supporting leg, enabling the first front supporting leg and the second front supporting leg to move forwards to a designated position IV of a front end cover beam, enabling the first front supporting leg and the second front supporting leg to stretch, enabling the first front supporting leg and the second front supporting leg to bear force and enabling the temporary supporting leg to be suspended;
S9, driving the main beam to move forwards to a designated position five through the first front supporting leg, the second front supporting leg and the middle supporting leg counter roller set, enabling the tail supporting leg to stretch to enable the tail supporting leg to bear force, supporting the bridge girder erection machine by the first front supporting leg, the second front supporting leg, the middle supporting leg and the tail supporting leg at the same time, achieving a next girder erection state, and completing bridge hole erection by the bridge girder erection machine;
The wide bridge girder erection machine comprises a girder, a crown block traversing mechanism, a front supporting leg, a middle supporting leg and a tail supporting leg;
The main beam is a main stress part, the top of the main beam is provided with a track for the longitudinal walking of the crown block, and the lower part of the main beam is provided with a longitudinal moving track for the longitudinal movement of the main beam, the front supporting leg, the middle supporting leg and the tail supporting leg;
The main beam is provided with a crown block cross beam, and a cross rail for the cross movement of the crown block cross movement mechanism is arranged on the crown block cross beam so as to meet the requirement of beam falling alignment; the crown block is arranged on the crown block traversing mechanism;
The structure of the middle supporting leg is the same as that of the tail supporting leg, telescopic column core column sleeve structures are arranged in the columns of the middle supporting leg and the tail supporting leg, hydraulic cylinders are arranged in the column core column sleeve structures, and the heights of the middle supporting leg and the tail supporting leg are adjusted by jacking column cores through the hydraulic cylinders; the telescopic upright posts jack up the upright post cores through the hydraulic cylinders and slide in the post sleeves to realize height adjustment, and pin shafts are inserted to fix the post cores and the post sleeves after the adjustment is in place, so that the hydraulic cylinders do not bear load any more;
The tail support leg is arranged at the tail part of the main beam, and a first connecting cross beam is arranged at the bottom of the tail support leg; the middle supporting leg is arranged in the middle of the main beam and is provided with a second connecting cross beam;
The front support leg is arranged at the front end of the main beam, the front support leg can longitudinally move on a longitudinally moving track of the main beam, the upright posts of the front support leg adopt a sectional structure of an upper section and a lower section, hydraulic cylinders are arranged on the upper sections of the upright posts of the front support leg, and the upper sections and the lower sections of the front support leg are connected or separated under the action of the hydraulic cylinders;
the crown block transverse moving mechanism comprises a slow winch, a fixed pulley block, a steel wire rope, a shoulder pole movable pulley block and a traveling driving mechanism, and can enable the beam body to rise and fall, and also enable a transverse rail of the crown block longitudinal moving mechanism to run, so that the requirement of transverse alignment of the beam body is met;
The front supporting legs comprise two first front supporting legs and two second front supporting legs, the bridge girder erection machine further comprises temporary supporting legs, the temporary supporting legs are arranged at the front ends of the main girders and located at the front ends of the first front supporting legs, and the crown block comprises a first crown block and a second crown block.
2. The method for erecting a wide bridge girder erection machine according to claim 1, wherein the two first front legs are both positioned in front of the second front legs and are arranged side by side at the front end of the girder.
3. The method for erecting a wide bridge girder erection machine according to claim 1, wherein the lower section of the first front leg and the lower section of the second front leg are connected by a front leg connecting mechanism so that the lower section of the first front leg and the lower section of the second front leg are connected as a unit.
4. The method for erecting a wide bridge girder erection machine according to claim 1, wherein the temporary support leg can longitudinally move on a longitudinally moving track at the lower part of the girder, and when the bridge girder erection machine overstretches, the temporary support leg bears the temporary supporting function of the girder on the front pier in the crossing hole due to excessive deflection caused by excessive cantilever length formed at the front end of the girder when the front support leg is overstretched.
5. The method according to claim 1, wherein the front leg, the middle leg and the tail leg each include respective counter roller groups, the main beam can move longitudinally relative to each leg by the counter roller groups when the bottom of each leg is grounded, and each leg except for the suspended leg can move longitudinally relative to the main beam by the counter roller groups when at least one of the front leg and the tail leg of the middle leg is suspended.
6. The method for erecting a wide bridge girder erection machine according to claim 1, wherein the bridge girder erection machine further comprises a guide girder, the guide girder further comprises a front guide girder and a rear guide girder, the front guide girder is arranged at the front end of the main girder, the rear guide girder is arranged at the tail end of the main girder, and the safety guide function is achieved when the bridge girder erection machine passes through a hole.
7. The method for erecting a wide bridge girder erection machine according to claim 1, wherein locking rods are arranged on the first crown block and the second crown block, and hydraulic cylinders are arranged at the tail ends of the locking rods.
8. The method for erecting a wide bridge girder erection machine according to claim 1, wherein the bridge girder erection machine further comprises a first girder transporting trolley and a second girder transporting trolley, and wherein the girder transporting is performed by the first girder transporting trolley and the second girder transporting trolley during the bridge girder erection process.
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| CN111535194A (en) * | 2020-05-14 | 2020-08-14 | 中铁十八局集团有限公司 | Special hoisting system of 900 ton fortune frame all-in-one |
| CN112575694A (en) * | 2020-12-10 | 2021-03-30 | 江苏捷达交通工程集团有限公司 | Mounting construction method for long-span T beam |
| CN114319111B (en) * | 2021-12-07 | 2024-09-13 | 保利长大工程有限公司 | Bridge girder erection machine, front supporting leg tilting method of bridge girder erection machine and hole passing method |
| CN116575350A (en) * | 2023-06-09 | 2023-08-11 | 中国港湾工程有限责任公司 | Bridge girder erection machine transportation method |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505145A (en) * | 1974-03-12 | 1978-03-30 | Koss K | Apparatus and method for building a concrete bridge superstructure |
| JPH08144224A (en) * | 1994-11-18 | 1996-06-04 | Kajima Corp | How to build a bridge |
| CN202509407U (en) * | 2012-01-05 | 2012-10-31 | 秦皇岛天业通联重工股份有限公司 | Double guiding beam bridge girder erection machine |
| CN103031811A (en) * | 2012-12-28 | 2013-04-10 | 中铁十一局集团有限公司 | Section-assembling bridge girder erection machine suitable for erecting bridges with minimum curve radii |
| CN103572699A (en) * | 2012-08-03 | 2014-02-12 | 浙江中建路桥设备有限公司 | Novel road bridge girder erection machine |
| CN104631335A (en) * | 2015-02-05 | 2015-05-20 | 郑州新大方重工科技有限公司 | Novel large-tonnage bridge girder erection machine and construction method thereof |
| CN108330842A (en) * | 2018-04-19 | 2018-07-27 | 郑州新大方重工科技有限公司 | A kind of Bridge Erector and construction method of large span steel reinforced concrete combination beam erection construction |
| CN208379448U (en) * | 2018-05-30 | 2019-01-15 | 浙江中建路桥设备有限公司 | A kind of twin beams Bridge Erector with balance support |
| CN109695204A (en) * | 2018-07-08 | 2019-04-30 | 中铁十一局集团汉江重工有限公司 | A kind of Bridge Erector and bridge erection method |
| CN109763430A (en) * | 2019-01-31 | 2019-05-17 | 浙江中建路桥设备有限公司 | A kind of Bridge Erector that curve via holes are set a roof beam in place and its application method |
| CN208884365U (en) * | 2018-08-24 | 2019-05-21 | 浙江中建路桥设备有限公司 | It is a kind of can side bale handle Bridge Erector |
| CN210368664U (en) * | 2019-07-12 | 2020-04-21 | 贵州路桥集团有限公司 | Wide-body bridge girder erection machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251475B (en) * | 2010-05-19 | 2013-08-07 | 北京万桥兴业机械有限公司 | Position changing platform and carrying frame integrated machine and bridge erection method |
-
2019
- 2019-07-12 CN CN201910631876.9A patent/CN110205948B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1505145A (en) * | 1974-03-12 | 1978-03-30 | Koss K | Apparatus and method for building a concrete bridge superstructure |
| JPH08144224A (en) * | 1994-11-18 | 1996-06-04 | Kajima Corp | How to build a bridge |
| CN202509407U (en) * | 2012-01-05 | 2012-10-31 | 秦皇岛天业通联重工股份有限公司 | Double guiding beam bridge girder erection machine |
| CN103572699A (en) * | 2012-08-03 | 2014-02-12 | 浙江中建路桥设备有限公司 | Novel road bridge girder erection machine |
| CN103031811A (en) * | 2012-12-28 | 2013-04-10 | 中铁十一局集团有限公司 | Section-assembling bridge girder erection machine suitable for erecting bridges with minimum curve radii |
| CN104631335A (en) * | 2015-02-05 | 2015-05-20 | 郑州新大方重工科技有限公司 | Novel large-tonnage bridge girder erection machine and construction method thereof |
| CN108330842A (en) * | 2018-04-19 | 2018-07-27 | 郑州新大方重工科技有限公司 | A kind of Bridge Erector and construction method of large span steel reinforced concrete combination beam erection construction |
| CN208379448U (en) * | 2018-05-30 | 2019-01-15 | 浙江中建路桥设备有限公司 | A kind of twin beams Bridge Erector with balance support |
| CN109695204A (en) * | 2018-07-08 | 2019-04-30 | 中铁十一局集团汉江重工有限公司 | A kind of Bridge Erector and bridge erection method |
| CN208884365U (en) * | 2018-08-24 | 2019-05-21 | 浙江中建路桥设备有限公司 | It is a kind of can side bale handle Bridge Erector |
| CN109763430A (en) * | 2019-01-31 | 2019-05-17 | 浙江中建路桥设备有限公司 | A kind of Bridge Erector that curve via holes are set a roof beam in place and its application method |
| CN210368664U (en) * | 2019-07-12 | 2020-04-21 | 贵州路桥集团有限公司 | Wide-body bridge girder erection machine |
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