CN110055894B - Mobile bridge girder erection machine and large-gradient girder erection construction method thereof - Google Patents
Mobile bridge girder erection machine and large-gradient girder erection construction method thereof Download PDFInfo
- Publication number
- CN110055894B CN110055894B CN201811392027.4A CN201811392027A CN110055894B CN 110055894 B CN110055894 B CN 110055894B CN 201811392027 A CN201811392027 A CN 201811392027A CN 110055894 B CN110055894 B CN 110055894B
- Authority
- CN
- China
- Prior art keywords
- girder erection
- main
- leg
- steel pin
- support leg
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 68
- 239000010959 steel Substances 0.000 claims description 68
- 239000000725 suspension Substances 0.000 claims description 32
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims description 6
- 238000003908 quality control method Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a mobile bridge girder erection machine and a construction method of a large-gradient girder erection. Belonging to the technical field of erection construction of box girders of passenger special lines of high-speed railways. The method mainly solves the problem that the existing SLJ900 mobile bridge girder erection machine cannot be used for large-gradient bridge girder erection construction within the interval range of +/-20-25 per mill. The main characteristics of the device are as follows: comprises an SLJ900 flow bridge girder erection machine; the automobile body further comprises a rear automobile heightening section which can be arranged on the first rear automobile main beam and has the height of 30cm, an auxiliary supporting leg heightening section which can be arranged on the auxiliary supporting leg and has the height of 55cm, and a front automobile heightening section which can be arranged on the front automobile main beam and has the height of 15cm, wherein the front automobile heightening section is larger than the second rear automobile main beam of Liang Di cm of the first rear automobile main beam. The invention has the characteristics of safety, reliability, easy quality control, economic cost reduction and maximum construction period saving, and is mainly used for the construction of the high-gradient girder erection within the interval range of +/-20 to 25 per mill of the special line for the passenger transportation of the high-speed railway.
Description
Technical Field
The invention relates to the technical field of construction of 900t prestressed concrete simple box girder erection of a passenger dedicated line of a high-speed railway, in particular to a mobile bridge girder erection machine and a construction method for a large-gradient girder erection within a range of +/-20-25 per mill.
Background
In recent years, as high-speed railway construction has gradually progressed to southeast coasts, western mountain areas and the like, bridge erection in these areas often encounters a heavy-gradient construction condition, and the conventional transportation and frame separation type bridge girder erection machine and transportation and frame integrated machine cannot adapt to girder erection requirements under the condition. The construction technology of the SLJ900 mobile bridge girder erection machine with the large gradient is based on the original construction operation capability, and the bridge girder erection construction safety and the work efficiency of the high-speed railway bridge girder with the large gradient section (+/-20 to 25 per mill interval range) are realized by improving the structure, the hydraulic pressure and the electric control system of the bridge girder erection machine.
Disclosure of Invention
The invention aims to provide an SLJ900 mobile bridge girder erection machine and a large-gradient girder erection construction method thereof, which are used for solving the problems that the construction of cast-in-situ box girders or movable formwork bridge construction is not facilitated due to the fact that part of mountain areas are fluctuated, construction roads are inconvenient to transport, the design height of bridge piers and the longitudinal gradient of bridges are designed within the range of +/-20-25 per mill.
In order to achieve the above purpose, the invention provides the following technical scheme of the flow bridge girder erection machine: the utility model provides a mobile bridge girder erection machine, for the SLJ900 mobile bridge girder erection machine including preceding car, back car, girder, main tributary leg, auxiliary landing leg, front and back hoist, travel control system, the back car includes back car suspension, back car suspension cylinder, back frame wheel and first back car owner roof beam, the preceding car includes preceding frame, preceding car suspension, preceding frame wheel and preceding car girder, the main tributary leg includes the cylinder that turns over, the main stand, the landing leg diagonal bar, diagonal bar bolt pneumatic cylinder, diagonal bar steel pin, underbeam and bolster, pass through bolted connection between underbeam and the bolster, the diagonal bar steel pin includes steel pin and lower steel pin, auxiliary landing leg includes pinhole, steel pin and shrink jacking cylinder, its characterized in that: the automobile body further comprises a rear automobile heightening section which can be arranged on the first rear automobile main beam and has the height of 30cm, an auxiliary supporting leg heightening section which can be arranged on the auxiliary supporting leg and has the height of 55cm, and a front automobile heightening section which can be arranged on the front automobile main beam and has the height of 15cm, wherein the front automobile heightening section is larger than the second rear automobile main beam of Liang Di cm of the first rear automobile main beam.
The rear vehicle heightening section is arranged in the middle of the top of the first rear vehicle main beam; the auxiliary supporting leg heightening section is arranged at the top end of the auxiliary supporting leg; the front vehicle heightening section is arranged between the front vehicle main beam and the front vehicle frame.
In the technical scheme of the invention, a groove with an inverted trapezoid cross section is arranged in the middle of the top of the second rear vehicle main beam, and the height of the groove is 30cm.
The invention provides a technical scheme of a construction method of a large-gradient girder erection, which comprises the following steps: the construction method of the heavy-gradient girder erection by using the flowing girder erection machine is characterized by comprising the following steps of:
(1) Before girder erection, according to the section gradient of +/-20-25 per mill of girder erection construction site, the main support leg, the bolster, the back car suspension and the back frame of the bridge girder erection machine are adjusted by installing or detaching the back car heightening section, the auxiliary support leg heightening section, the front car heightening section and the second back car girder, the back car suspension cylinder is lifted or lowered, the heights of the main support leg, the bolster, the back car suspension and the back frame of the bridge girder erection machine are adjusted, the gradient of the bridge girder erection machine is reduced when the girder erection is carried out, and the second back car girder is replaced;
(2) The main support leg moves forward to the position above the pier at the rear of the hole to be erected, the auxiliary support leg is put down, the front vehicle is lifted to hang, the turning hydraulic cylinder is started, the main upright post is enabled to droop, the support leg diagonal rod is in a straight line state, the diagonal rod bolt hydraulic cylinder is started, and the diagonal rod steel pin is inserted; moving the main support legs back and forth to a proper position, gradually lowering the front vehicle suspension height to enable the main support legs to be in place, lifting the front vehicle suspension to enable the front vehicle suspension to be separated from the bridge deck; loosening a connecting bolt between the lower cross beam and the cushion beam;
(3) The bridge girder erection machine is driven by a rear vehicle to carry out a first step of heavy load via hole, the pressure of the main support leg diagonal rod steel pin is strictly monitored in the via hole process, and the main support leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal; the speed of the via hole is reduced in time when the via hole is about to be in place, and the via hole slowly moves to a specified position; when the auxiliary support leg reaches the front pier, the auxiliary support leg is slowly positioned, parking braking is applied after the auxiliary support leg is positioned in place, wedges are placed in front of and behind wheels of the rear frame, when the auxiliary support leg reaches the front Fang Qiaodun of a hole to be erected, the auxiliary support leg is slowly positioned, the auxiliary support leg is stopped when the center of the auxiliary support leg deviates from the center of the front pier by 1010mm, and the first step of heavy-load through hole is positioned;
(4) Simultaneously, the heights of the front and rear lifting appliances are reduced, and the front end temporary support pad of the box girder to be erected prevents the front lifting appliance steel wire rope from being stressed; jacking the auxiliary supporting leg to enable the main supporting leg to be separated from the pier, inserting a steel pin into a pin hole of the auxiliary supporting leg after the jacking height is calculated, and clicking to shrink the jacking cylinder to enable the steel pin to bear force;
(5) The main support leg moves forward to reach the front Fang Qiaodun of the hole to be supported, and after the main support leg is in place, the auxiliary support leg is retracted, so that the main support leg is supported;
(6) Lifting a lifting point at the front end of the box girder to be erected, and carrying out a second step of heavy load via hole by a bridge girder erection machine under the drive of a rear truck, wherein the pressure of a main leg diagonal rod steel pin is strictly monitored in the via hole process, and the main leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal; the speed of the via hole is reduced in time when the via hole is about to be in place, and then the via hole slowly moves to a specified position; applying parking brake after the vehicle is in place, placing wedge blocks in front and back of wheels of the rear vehicle frame, and passing through holes to place and then falling beams;
(7) The whole bridge girder erection machine moves backwards, so that the front truck completely enters the top surface of the erected box girder, the pressure of the main leg diagonal rod steel pin is strictly monitored in the process of hole passing, and the main leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal;
(8) And pulling out the inclined rod steel pins, folding up the main supporting leg and the auxiliary supporting leg, returning the empty bridge girder erection machine to the girder field, and starting the next girder transportation operation.
In the above scheme, the step (1) may be: : (1) Before girder erection, according to the gradient of the interval range of 20-25 per mill of the girder erection construction site, the rear truck is mounted with a 30cm high heightening section, the rear truck suspension oil cylinder is lifted by 25cm, the gradient of the girder erection machine is reduced during girder erection, and meanwhile, the height of the lower cross beam of the main supporting leg is ensured to be capable of being supported above a filler stone.
In the above scheme, step (1) may further be: (1) Before girder erection, according to the gradient of the girder erection construction site-20-25 mill interval, a front truck heightening section with the height of 15cm is arranged on a front truck frame by replacing a second rear truck girder with the height of Liang Di cm higher than that of a first rear truck owner, an auxiliary supporting leg heightening section with the height of 55cm is arranged on an auxiliary supporting leg, a rear truck suspension cylinder descends by 25cm, the gradient of a girder erection machine during girder erection is reduced, and the height of a lower cross beam of a main supporting leg can be supported above a filler stone.
In the scheme, in the main leg diagonal steel pins in the steps (3), (6) and (7), the alarm is given when the upper steel pin pressure is 150kN or the lower steel pin pressure is 570kN, and the power is cut off when the upper steel pin pressure is 170kN or the lower steel pin pressure is 850 kN.
Compared with the prior art, the invention has the beneficial effects that: the SLJ900 flow bridge girder erection machine improves the structure of the original bridge girder erection machine to realize girder erection construction of the large-gradient section of the section range of +/-20-25 per mill of the high-speed railway bridge girder. The bridge girder erection machine is used for carrying out heavy-gradient girder erection construction in mountain areas, is safe and reliable, has easily controlled quality, can reduce economic cost, saves construction period to the greatest extent, enables a high-speed railway to complete traffic more quickly, and creates great national economic benefit.
The invention is mainly used for the construction of the high-gradient girder erection within the interval range of +/-20-25 per mill of the passenger special line of the high-speed railway.
Drawings
FIG. 1 is a front view showing a state that a first rear main beam is increased by 30cm and an elevation section is formed when 25%.
Fig. 2 is a front view of the second rear main beam and the adjusted suspension state when the vehicle is 25%.
FIG. 3 is a front view showing a front frame with an increased section of 15cm when the front frame is inclined down a slope of 25%.
Fig. 4 is a front view showing a state that the auxiliary leg is increased by 55cm in height-increasing section when 25%.
Fig. 5 is a side view of the auxiliary leg in a 25%o downhill slope with an increase of 55cm in the height.
FIG. 6 is a front view of the bridge girder erection machine in a horizontal state before the whole machine is adjusted.
FIG. 7 is a front view of the bridge girder erection machine in a horizontal state after the whole machine is adjusted.
The marks in the figure: 1. a rear vehicle heightening section; 2. a first rear main beam; 3. a second rear vehicle main beam; 4. a rear vehicle suspension cylinder; 5. front vehicle heightening section.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, 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.
As shown in fig. 1 to 7, the mobile bridge girder erection machine of the invention is an SLJ900 mobile bridge girder erection machine comprising a front car, a rear car, a main girder, a main leg, an auxiliary leg, a front and rear sling and a travel control system. The SLJ900 mobile bridge girder erection machine is prior art, wherein, the rear car includes rear car suspension, rear car suspension cylinder 4, the rear frame, rear frame wheel and first rear car roof beam, the front car includes preceding frame, preceding car suspension, preceding frame wheel and preceding car girder, the main tributary leg includes the roll-over pneumatic cylinder, the main stand, the landing leg diagonal bar, diagonal bar bolt pneumatic cylinder, the diagonal bar steel pin, underbeam and bolster, pass through bolted connection between underbeam and the bolster, the diagonal bar steel pin includes steel pin and lower steel pin, the auxiliary landing leg includes pinhole, steel pin and shrink jack-up cylinder. The invention is based on the existing SLJ900 flow bridge girder erection machine, and further comprises a rear vehicle heightening section 1 with the height of 30cm, which can be arranged on a first rear vehicle main beam 2, an auxiliary supporting leg heightening section with the height of 55cm, which can be arranged on an auxiliary supporting leg, a front vehicle heightening section 5 with the height of 15cm, which can be arranged on a front vehicle main beam, and a second rear vehicle main beam 3 with the height of Liang Di cm, which is larger than that of the first rear vehicle main beam. The rear vehicle height increasing section 1 is arranged in the middle of the top of the first rear vehicle main beam 2. The auxiliary supporting leg heightening section is arranged at the top end of the auxiliary supporting leg. The front vehicle heightening section 5 is arranged between the front vehicle main beam and the front vehicle frame. The middle of the top of the second rear main beam 3 is provided with a groove with an inverted trapezoid cross section, and the height of the groove is 30cm.
Construction method example 1:
the mobile bridge girder erection machine is used for a large-gradient girder erection construction method in the interval range of 20-25 per mill, and is characterized by comprising the following steps:
(1) Before girder erection, according to the gradient of the girder erection construction site within the interval of 20-25 per mill, the lifting section of the rear truck is detached by installing the height of 30cm, the suspension cylinder of the rear truck is lifted by 25cm, the gradient of the girder erection machine is reduced when the girder is erected, and the height of the lower cross beam of the main supporting leg is ensured to be capable of being supported above the filler stone;
(2) The main support leg moves forward to the position above the pier at the rear of the hole to be erected, the auxiliary support leg is put down, the front vehicle is lifted to hang, the turning hydraulic cylinder is started, the main upright post is enabled to droop, the support leg diagonal rod is in a straight line state, the diagonal rod bolt hydraulic cylinder is started, and the diagonal rod steel pin is inserted; moving the main support legs back and forth to a proper position, gradually lowering the front vehicle suspension height to enable the main support legs to be in place, lifting the front vehicle suspension to enable the front vehicle suspension to be separated from the bridge deck; loosening a connecting bolt between the lower cross beam and the cushion beam;
(3) The bridge girder erection machine is driven by a rear vehicle to carry out a first step of heavy load via hole, the pressure of the main support leg diagonal rod steel pin is strictly monitored in the via hole process, and the main support leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal; the upper steel pin is subjected to 150kN alarming, and 170kN is powered off; the lower steel pin 570kN alarms, and 650kN is powered off; if the horizontal force value of the main support leg is found to be abnormal, the failure reason must be checked, and the operation of the through hole can be continued after the failure reason is eliminated; the speed of the via hole is reduced in time when the via hole is about to be in place, and the via hole slowly moves to a specified position; when the auxiliary support leg reaches the front pier, the auxiliary support leg is slowly positioned, parking braking is applied after the auxiliary support leg is positioned in place, wedges are placed in front of and behind wheels of the rear frame, when the auxiliary support leg reaches the front Fang Qiaodun of a hole to be erected, the auxiliary support leg is slowly positioned, the auxiliary support leg is stopped when the center of the auxiliary support leg deviates from the center of the front pier by 1010mm, and the first step of heavy-load through hole is positioned;
(4) Simultaneously, the heights of the front and rear lifting appliances are reduced, and the front end temporary support pad of the box girder to be erected prevents the front lifting appliance steel wire rope from being stressed; jacking the auxiliary supporting leg to enable the main supporting leg to be separated from the pier, inserting a steel pin into a pin hole of the auxiliary supporting leg after the jacking height is calculated, and clicking to shrink the jacking cylinder to enable the steel pin to bear force;
(5) The main support leg moves forward to reach the front Fang Qiaodun of the hole to be supported, and after the main support leg is in place, the auxiliary support leg is retracted, so that the main support leg is supported;
(6) Lifting a lifting point at the front end of a box girder to be erected, and carrying out a second step of heavy load via hole by a bridge girder erection machine under the drive of a rear truck, wherein the pressure of a diagonal rod steel pin is strictly monitored in the via hole process, and the bridge girder erection machine is required to be stopped for inspection when the pressure of the diagonal rod steel pin is abnormal; the upper steel pin is subjected to 150kN alarming, and 170kN is powered off; the lower steel pin 570kN alarms, and 650kN is powered off; if the horizontal force value of the main support leg is found to be abnormal, the failure reason must be checked, and the operation of the through hole can be continued after the failure reason is eliminated; the speed of the via hole is reduced in time when the via hole is about to be in place, and then the via hole slowly moves to a specified position; applying parking brake after the vehicle is in place, placing wedge blocks in front and back of wheels of the rear vehicle frame, and passing through holes to place and then falling beams;
(7) The whole bridge girder erection machine moves backwards, so that the front truck completely enters the top surface of the erected box girder, the pressure of the main leg diagonal rod steel pin is strictly monitored in the process of hole passing, and the main leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal; the upper steel pin is subjected to 150kN alarming, and 170kN is powered off; the lower steel pin 570kN alarms, and 650kN is powered off; if the horizontal force value of the main support leg is found to be abnormal, the failure reason must be checked, and the operation of the through hole can be continued after the failure reason is eliminated;
(8) And pulling out the inclined rod steel pins, folding up the main supporting leg and the auxiliary supporting leg, returning the empty bridge girder erection machine to the girder field, and starting the next girder transportation operation.
Construction method example 2:
the above-mentioned mobile bridge girder erection machine is used in the construction method of the girder erection with a large gradient in the interval range of-20%o to 25%o, and is different from example 1 only in the step (1). The (1) th step of example 2 is:
(1) Before girder erection, according to the gradient of the girder erection construction site-20-25 mill interval, a front truck heightening section with the height of 15cm is arranged on a front truck frame by replacing a second rear truck girder with the height of Liang Di cm higher than that of a first rear truck owner, an auxiliary supporting leg heightening section with the height of 55cm is arranged on an auxiliary supporting leg, a rear truck suspension cylinder descends by 25cm, the gradient of a girder erection machine during girder erection is reduced, and the height of a lower cross beam of a main supporting leg can be supported above a filler stone.
The magnitude of the horizontal force of the main support leg should be monitored in real time in the backward process of the whole machine, if the bridge girder erection machine is found to advance and the number is unchanged, or a monitoring system is invalid without display indication, the operation after repair must be checked at the moment. If the clamping and the other clamping occur in the process, the monitoring data can be rapidly increased (at the moment, the display data of the upper steel pin is approximately 80kN, and the stress value of the steel pin is controlled by the steps that the upper steel pin is alarmed at 150kN and powered off at 170kN, and the lower steel pin is alarmed at 570kN and powered off at 650 kN), so that the safety of the main supporting leg is ensured.
Claims (7)
1. The utility model provides a mobile bridge girder erection machine, for the SLJ900 mobile bridge girder erection machine including preceding car, back car, girder, main tributary leg, auxiliary landing leg, front and back hoist, travel control system, the back car includes back car suspension, back car suspension cylinder, back frame wheel and first back car owner roof beam, the preceding car includes preceding frame, preceding car suspension, preceding frame wheel and preceding car girder, the main tributary leg includes the cylinder that turns over, the main stand, the landing leg diagonal bar, diagonal bar bolt pneumatic cylinder, diagonal bar steel pin, underbeam and bolster, pass through bolted connection between underbeam and the bolster, the diagonal bar steel pin includes steel pin and lower steel pin, auxiliary landing leg includes pinhole, steel pin and shrink jacking cylinder, its characterized in that: the automobile body further comprises a rear automobile heightening section which can be arranged on the first rear automobile main beam and has the height of 30cm, an auxiliary supporting leg heightening section which can be arranged on the auxiliary supporting leg and has the height of 55cm, and a front automobile heightening section which can be arranged on the front automobile main beam and has the height of 15cm, wherein the front automobile heightening section is larger than the second rear automobile main beam of Liang Di cm of the first rear automobile main beam.
2. A flow bridge girder erection machine according to claim 1, wherein: the rear vehicle heightening joint (1) is arranged in the middle of the top of the first rear vehicle main beam (2); the auxiliary supporting leg heightening section is arranged at the top end of the auxiliary supporting leg; the front vehicle heightening section (5) is arranged between the front vehicle main beam and the front vehicle frame.
3. A flow bridge girder erection machine according to claim 1 or 2, wherein: the middle of the top of the second rear main beam (3) is provided with a groove with an inverted trapezoid cross section, and the height of the groove is 30cm.
4. A method of high grade girder erection construction using the flow type girder erection machine of claim 1, comprising the steps of:
(1) Before girder erection, according to the section gradient of +/-20-25 per mill of girder erection construction site, the main support leg, the bolster, the back car suspension and the back frame of the bridge girder erection machine are adjusted by installing or detaching the back car heightening section, the auxiliary support leg heightening section, the front car heightening section and the second back car girder, the back car suspension cylinder is lifted or lowered, the heights of the main support leg, the bolster, the back car suspension and the back frame of the bridge girder erection machine are adjusted, the gradient of the bridge girder erection machine is reduced when the girder erection is carried out, and the second back car girder is replaced;
(2) The main support leg moves forward to the position above the pier at the rear of the hole to be erected, the auxiliary support leg is put down, the front vehicle is lifted to hang, the turning hydraulic cylinder is started, the main upright post is enabled to droop, the support leg diagonal rod is in a straight line state, the diagonal rod bolt hydraulic cylinder is started, and the diagonal rod steel pin is inserted; moving the main support legs back and forth to a proper position, gradually lowering the front vehicle suspension height to enable the main support legs to be in place, lifting the front vehicle suspension to enable the front vehicle suspension to be separated from the bridge deck; loosening a connecting bolt between the lower cross beam and the cushion beam;
(3) The bridge girder erection machine is driven by a rear vehicle to carry out a first step of heavy load via hole, the pressure of the main support leg diagonal rod steel pin is strictly monitored in the via hole process, and the main support leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal; the speed of the via hole is reduced in time when the via hole is about to be in place, and the via hole slowly moves to a specified position; when the auxiliary support leg reaches the front pier, the auxiliary support leg is slowly positioned, parking braking is applied after the auxiliary support leg is positioned in place, wedges are placed in front of and behind wheels of the rear frame, when the auxiliary support leg reaches the front Fang Qiaodun of a hole to be erected, the auxiliary support leg is slowly positioned, the auxiliary support leg is stopped when the center of the auxiliary support leg deviates from the center of the front pier by 1010mm, and the first step of heavy-load through hole is positioned;
(4) Simultaneously, the heights of the front and rear lifting appliances are reduced, and the front end temporary support pad of the box girder to be erected prevents the front lifting appliance steel wire rope from being stressed; jacking the auxiliary supporting leg to enable the main supporting leg to be separated from the pier, inserting a steel pin into a pin hole of the auxiliary supporting leg after the jacking height is calculated, and clicking to shrink the jacking cylinder to enable the steel pin to bear force;
(5) The main support leg moves forward to reach the front Fang Qiaodun of the hole to be supported, and after the main support leg is in place, the auxiliary support leg is retracted, so that the main support leg is supported;
(6) Lifting a lifting point at the front end of the box girder to be erected, and carrying out a second step of heavy load via hole by a bridge girder erection machine under the drive of a rear truck, wherein the pressure of a main leg diagonal rod steel pin is strictly monitored in the via hole process, and the main leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal; the speed of the via hole is reduced in time when the via hole is about to be in place, and then the via hole slowly moves to a specified position; applying parking brake after the vehicle is in place, placing wedge blocks in front and back of wheels of the rear vehicle frame, and passing through holes to place and then falling beams;
(7) The whole bridge girder erection machine moves backwards, so that the front truck completely enters the top surface of the erected box girder, the pressure of the main leg diagonal rod steel pin is strictly monitored in the process of hole passing, and the main leg diagonal rod steel pin is required to be stopped for inspection when the pressure is abnormal;
(8) And pulling out the steel pins of the inclined rods of the main support legs, folding up the main support legs and the auxiliary support legs, returning the empty bridge girder erection machine to a girder field, and starting the next girder transportation operation.
5. The high-gradient girder erection construction method according to claim 4, wherein: the step (1) is as follows:
(1) Before girder erection, according to the gradient of the interval range of 20-25 per mill of the girder erection construction site, the rear truck is mounted with a 30cm high heightening section, the rear truck suspension oil cylinder is lifted by 25cm, the gradient of the girder erection machine is reduced during girder erection, and meanwhile, the height of the lower cross beam of the main supporting leg is ensured to be capable of being supported above a filler stone.
6. The high-gradient girder erection construction method according to claim 4, wherein: the step (1) is as follows:
(1) Before girder erection, according to the gradient of the girder erection construction site-20-25 mill interval, a front truck heightening section with the height of 15cm is arranged on a front truck frame by replacing a second rear truck girder with the height of Liang Di cm higher than that of a first rear truck owner, an auxiliary supporting leg heightening section with the height of 55cm is arranged on an auxiliary supporting leg, a rear truck suspension cylinder descends by 25cm, the gradient of a girder erection machine during girder erection is reduced, and the height of a lower cross beam of a main supporting leg can be supported above a filler stone.
7. The construction method for a high gradient girder erection according to claim 4, 5 or 6, wherein in the diagonal steel pins in the steps (3), (6) and (7), an alarm is given when the upper steel pin pressure is 150kN or the lower steel pin pressure is 570kN, and a power is turned off when the upper steel pin pressure is 170kN or the lower steel pin pressure is 850 kN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392027.4A CN110055894B (en) | 2018-11-21 | 2018-11-21 | Mobile bridge girder erection machine and large-gradient girder erection construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392027.4A CN110055894B (en) | 2018-11-21 | 2018-11-21 | Mobile bridge girder erection machine and large-gradient girder erection construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110055894A CN110055894A (en) | 2019-07-26 |
| CN110055894B true CN110055894B (en) | 2024-02-09 |
Family
ID=67314986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392027.4A Active CN110055894B (en) | 2018-11-21 | 2018-11-21 | Mobile bridge girder erection machine and large-gradient girder erection construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110055894B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112921817A (en) * | 2021-02-04 | 2021-06-08 | 中铁五局集团有限公司 | Steel support for equivalent extension bridge girder erection machine stand column and use method thereof |
| CN114481835B (en) * | 2021-12-13 | 2023-04-07 | 中铁第五勘察设计院集团有限公司 | Stepless span changing device and method for suspension point of bridge girder erection machine |
| CN115075149A (en) * | 2022-06-20 | 2022-09-20 | 中铁二局集团有限公司 | Construction method for erecting large downhill bridge by using guide-beam-free transportation and erection integrated machine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579018A (en) * | 1991-09-18 | 1993-03-30 | P S Co Ltd | Bridge girder laying device |
| CN101942807A (en) * | 2010-10-08 | 2011-01-12 | 石家庄铁道大学国防交通研究所 | Flow type bridge erecting machine |
| KR101160273B1 (en) * | 2012-02-22 | 2012-06-27 | (주) 동방메가테크 | Straddle carrier for bridge construction |
| CN103194980A (en) * | 2013-04-19 | 2013-07-10 | 郑州新大方重工科技有限公司 | Wheeltrack type girder transport vehicle overall pack bridge girder erection machine line-switching or between-bridge transfer mechanism |
| CN204185777U (en) * | 2014-09-28 | 2015-03-04 | 中铁十一局集团第六工程有限公司 | A kind of cantilevered auxiliary landing leg structure of bridge erecting machine |
| CN106087774A (en) * | 2016-06-17 | 2016-11-09 | 中铁十七局集团第三工程有限公司 | A kind of utilize 900 tons of beam shifting machines to bridge floor beam car dress beam Summarized Account of Bridge Erection Construction method |
| CN107059640A (en) * | 2017-05-24 | 2017-08-18 | 郑州新大方重工科技有限公司 | The Bridge Erector and its construction method constructed by cross for precast segmental beam |
| CN107313358A (en) * | 2017-08-30 | 2017-11-03 | 中国建筑第五工程局有限公司 | For the beam erecting method and Bridge Erector under big longitudinal slope operating mode |
| CN208107056U (en) * | 2018-04-10 | 2018-11-16 | 李长庚 | A kind of new flow formula Bridge Erector |
| CN209428958U (en) * | 2018-11-21 | 2019-09-24 | 中铁十一局集团第六工程有限公司 | A kind of flow type bridge erecting machine |
-
2018
- 2018-11-21 CN CN201811392027.4A patent/CN110055894B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579018A (en) * | 1991-09-18 | 1993-03-30 | P S Co Ltd | Bridge girder laying device |
| CN101942807A (en) * | 2010-10-08 | 2011-01-12 | 石家庄铁道大学国防交通研究所 | Flow type bridge erecting machine |
| KR101160273B1 (en) * | 2012-02-22 | 2012-06-27 | (주) 동방메가테크 | Straddle carrier for bridge construction |
| CN103194980A (en) * | 2013-04-19 | 2013-07-10 | 郑州新大方重工科技有限公司 | Wheeltrack type girder transport vehicle overall pack bridge girder erection machine line-switching or between-bridge transfer mechanism |
| CN204185777U (en) * | 2014-09-28 | 2015-03-04 | 中铁十一局集团第六工程有限公司 | A kind of cantilevered auxiliary landing leg structure of bridge erecting machine |
| CN106087774A (en) * | 2016-06-17 | 2016-11-09 | 中铁十七局集团第三工程有限公司 | A kind of utilize 900 tons of beam shifting machines to bridge floor beam car dress beam Summarized Account of Bridge Erection Construction method |
| CN107059640A (en) * | 2017-05-24 | 2017-08-18 | 郑州新大方重工科技有限公司 | The Bridge Erector and its construction method constructed by cross for precast segmental beam |
| CN107313358A (en) * | 2017-08-30 | 2017-11-03 | 中国建筑第五工程局有限公司 | For the beam erecting method and Bridge Erector under big longitudinal slope operating mode |
| CN208107056U (en) * | 2018-04-10 | 2018-11-16 | 李长庚 | A kind of new flow formula Bridge Erector |
| CN209428958U (en) * | 2018-11-21 | 2019-09-24 | 中铁十一局集团第六工程有限公司 | A kind of flow type bridge erecting machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110055894A (en) | 2019-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110055894B (en) | Mobile bridge girder erection machine and large-gradient girder erection construction method thereof | |
| US11634877B2 (en) | Method for removal of temporary support system for road bridge pre-fabricated small box girder-type concealed bent cap, and equipment therefor | |
| CN102704407B (en) | Construction method of lower guide beam type bridge-erecting crane passing through tunnel | |
| CN101260650B (en) | 50m/1430t double width integral box girder construction process | |
| CN110230261B (en) | Mounting construction method for upper frame beam of double-layer synchronous beam | |
| CN107747282B (en) | On across both wired old bridge overall pulling down methods | |
| CN207932932U (en) | A kind of twin beams slope Bridge Erector | |
| CN107313360B (en) | Sliding cable type support-free support replacing operation platform | |
| CN113123246B (en) | Bridge girder erection machine dismantling method | |
| CN210561749U (en) | Multi-frame juxtaposed double-cantilever bridge girder erection machine | |
| CN209428958U (en) | A kind of flow type bridge erecting machine | |
| CN112144401B (en) | Bridge girder erection machine over-span method based on curve track and large longitudinal slope environment | |
| CN111042004A (en) | Hanging basket track beam traveling method | |
| CN112211112A (en) | Steel box girder installation method adopting double-guide-girder erection machine on existing bridge | |
| CN212771960U (en) | Whole device of demolising of 0# piece bracket of continuous rigid frame bridge | |
| CN110273385B (en) | Method for dismantling cross-line hole cross-concrete box girder | |
| CN115075149A (en) | Construction method for erecting large downhill bridge by using guide-beam-free transportation and erection integrated machine | |
| CN113718659B (en) | Urban road and bridge construction method | |
| CN114182654B (en) | Railway box girder transverse falling device and dismantling construction method | |
| CN114525737B (en) | Bridge upper bearing type movable die carrier via hole braking system and braking method | |
| CN217556689U (en) | Movable bridge overhauls auxiliary platform | |
| CN219490682U (en) | Basket hanging device for prestress construction of light T-pier cantilever cap beam | |
| CN220550458U (en) | Construction device for sliding and installing plate girder on rail in height-limiting environment | |
| CN211420902U (en) | Single-segment box girder bridge girder erection machine | |
| CN214005464U (en) | Structure is demolishd fast to multilayer interchange ramp bridge steel hanging beam and concrete cantilever section |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |