CN112854008A - Prefabricated bridge pier and beam integrated bridge girder erection machine and construction method thereof - Google Patents
Prefabricated bridge pier and beam integrated bridge girder erection machine and construction method thereof Download PDFInfo
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- CN112854008A CN112854008A CN202110233822.4A CN202110233822A CN112854008A CN 112854008 A CN112854008 A CN 112854008A CN 202110233822 A CN202110233822 A CN 202110233822A CN 112854008 A CN112854008 A CN 112854008A
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- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Abstract
预制桥梁墩梁一体化架桥机，包括主桁架、第一起重行车、第二起重行车、主支腿、主承重支腿、副承重支腿、第一辅助支腿和第二辅助支腿；所述第一起重行车和第二起重行车滑动连接于主桁架顶部，且第一起重行车上设有第一吊具，第二起重行车上设有第二吊具；所述主支腿、主承重支腿、副承重支腿、第一辅助支腿和第二辅助支腿可拆卸式连接于主桁架底部；与现有技术相比，采用了先进新颖的一体化架桥机架设上部、下部结构，并用第一起重行车和第二起重行车的吊具可同时吊装不同构件，减少了换吊具工序，同时主支腿的多级伸缩功能，可适应不同高度桥梁的架设，减少了设备的更换，提高了架设的施工效率。
Prefabricated bridge pier and beam integrated bridge erection machine, including main truss, first hoisting crane, second hoisting crane, main outrigger, main load-bearing outrigger, auxiliary load-bearing outrigger, first auxiliary outrigger and second auxiliary outrigger ; the first hoisting trolley and the second hoisting trolley are slidably connected to the top of the main truss, and the first hoisting trolley is provided with a first sling, and the second hoisting trolley is provided with a second sling; the main support The legs, the main load-bearing outriggers, the auxiliary load-bearing outriggers, the first auxiliary outriggers and the second auxiliary outriggers are detachably connected to the bottom of the main truss; The upper and lower structures, and the slings of the first hoisting crane and the second hoisting crane can be used to hoist different components at the same time, which reduces the process of changing the slings. The replacement of equipment is reduced, and the construction efficiency of erection is improved.
Description
Technical Field
The invention belongs to the technical field of prefabricated bridges, and particularly relates to a prefabricated bridge pier and beam integrated bridge girder erection machine and a construction method thereof.
Background
The prefabricated assembly construction technology is widely applied to urban bridges and river-crossing and sea-crossing bridges in recent years due to the advantages of quick construction, small occupied space and the like, and the Lin Conve bridge, the Podochiza, the Shanghai Yangtze river bridge, the HongZhu Macao bridge, the Shanghai MinGao bridge and other projects adopt prefabricated assembly to erect the bridge.
The bridge girder erection machine is mature in upper structure assembly, and upper and lower structures are independently assembled respectively in the domestic and overseas prefabricated assembly technology, so that the continuity of the whole construction of the bridge structure cannot be considered globally.
If the superstructure adopts the bridge girder erection machine to erect, the substructure adopts large-scale crawler crane to erect, has brought very big construction difficult problem in hilly mountain area, beach river beach, the narrow and small construction site in urban road space, when required bridge need erect in island hilly mountain area, because relief, mountain forest farmland cover, the traffic is inconvenient, soft base is more, the problem of levying the land expense high, has certain technological problem.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a prefabricated bridge pier and beam integrated bridge girder erection machine which is prefabricated, assembled and constructed, occupies small space and is constructed quickly and a construction method thereof.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the prefabricated bridge pier-beam integrated bridge girder erection machine comprises a main truss, a first hoisting crane, a second hoisting crane, a main supporting leg, a main bearing supporting leg, an auxiliary bearing supporting leg, a first auxiliary supporting leg and a second auxiliary supporting leg; the first hoisting travelling crane and the second hoisting travelling crane are connected to the top of the main truss in a sliding manner, a first lifting appliance is arranged on the first hoisting travelling crane, and a second lifting appliance is arranged on the second hoisting travelling crane; the main supporting leg, the main bearing supporting leg, the auxiliary bearing supporting leg, the first auxiliary supporting leg and the second auxiliary supporting leg are detachably connected to the bottom of the main truss.
As a preferable scheme of the present invention, the main truss is formed by assembling a plurality of segments.
As a preferable scheme of the invention, the auxiliary bearing leg, the first auxiliary leg and the second auxiliary leg are all provided with a hydraulic system.
In a preferred embodiment of the present invention, the first crane is rotatably connected to the main girder.
As a preferable scheme of the present invention, the main leg is of a telescopic structure.
As a preferred scheme of the invention, a jacking oil cylinder is arranged below the main supporting leg, an inner telescopic sleeve is arranged outside the jacking oil cylinder, and an outer telescopic sleeve is arranged outside the inner telescopic sleeve.
The construction method of the prefabricated bridge pier-beam integrated bridge girder erection machine comprises the following steps:
step A: dividing the tie beam into a front pier, a middle pier and a rear pier according to the installation condition of the bridge, wherein the front pier is in a form to be installed, the middle pier is provided with an upright post and a capping beam, the rear pier is provided with an upright post, a capping beam and a T-shaped beam, and the middle pier is positioned between the front pier and the rear pier;
and B: assembling by a bridge girder erection machine; standing front supporting legs on the front side of a front pier tie beam type bearing platform to be installed, standing front middle supporting legs on installed middle piers and capping beams, and standing rear bearing supporting legs on a T beam with erected rear piers;
and C: testing a bridge girder erection machine;
step D: installing a prefabricated upright post, wherein a first lifting appliance and a second lifting appliance respectively lift two ends of the prefabricated upright post, driving the prefabricated upright post to move through a first lifting travelling crane and a second lifting travelling crane, simultaneously lowering the prefabricated upright post through the first lifting travelling crane and the second lifting appliance after the prefabricated upright post moves to a required position, moving the second lifting travelling crane close to the first lifting travelling crane to enable the second lifting appliance to place the upright post on the ground when the prefabricated upright post is at 74 degrees, unloading the second lifting appliance on the prefabricated upright post until the prefabricated upright post is vertical to the first lifting appliance, and lifting the prefabricated upright post to a front pier required to be installed through the first lifting appliance;
step E: d, mounting a prefabricated capping beam, hoisting the prefabricated capping beam by a first lifting appliance, enabling the prefabricated capping beam to advance in a longitudinal posture under the action of a first crane, horizontally rotating the prefabricated capping beam by 90 degrees to be in a transverse posture after the prefabricated capping beam is close to the prefabricated upright post mounted in the step D, and continuing to advance under the action of the first crane until the required mounting position is reached;
step F: the bridge girder erection machine comprises a bridge girder erection machine, a bridge girder erection machine and a bridge girder erection machine, wherein the bridge girder erection machine is used for passing through a hole, moving a first crane travelling crane and a second crane travelling crane to a second auxiliary supporting leg, jacking the first auxiliary supporting leg and the second auxiliary supporting leg, moving an auxiliary bearing supporting leg to the first auxiliary supporting leg, moving a main bearing supporting leg to a capping beam of a front pier for anchoring, moving the first crane travelling crane and the second crane travelling crane to the first auxiliary supporting leg, lifting the main supporting leg upwards, lifting the first auxiliary supporting leg and the second auxiliary supporting leg away from a bridge floor, moving a main truss towards the next front pier, standing the main supporting leg on the front side of a front pier beam-tied type bearing platform to be installed, and anchoring the main bearing supporting leg, the auxiliary bearing supporting leg, the first auxiliary supporting leg and;
step G: installing a prefabricated T beam, hoisting the T beam through a first hoisting tool and a second hoisting tool, and moving the T beam to a required position under the action of a first hoisting crane and a second hoisting crane;
step H: and D, repeating the step D, the step E and the step F until the bridge installation is finished, and dismantling the bridge girder erection machine.
And D, after the prefabricated stand column is installed in place, observing the top end of the stand column in 2 directions by using a total station, and finely adjusting a jack to check the verticality of the stand column.
And E, when the prefabricated bent cap is hoisted and rotated, the distance between the prefabricated bent cap and the main supporting leg is not less than 7m, and when the prefabricated bent cap is close to the main supporting leg, a manual traction mode is adopted.
As a preferable scheme of the present invention, when the T-beam is erected in step G, the edge beam is installed first, and then the middle beam is installed.
Compared with the prior art, the invention has the beneficial effects that:
1. the construction efficiency is improved. The advanced and novel integrated bridge girder erection machine is adopted to erect the upper part and the lower part structure, the lifting appliances of the first lifting travelling crane and the second lifting travelling crane can be used for simultaneously lifting different members, the working procedures of replacing the lifting appliances are reduced, meanwhile, the multistage telescopic function of the main supporting legs can adapt to erection of bridges with different heights, the replacement of equipment is reduced, and the erection construction efficiency is improved.
2. And the cost is saved. Compared with the conventional truck crane installation method, the integrated bridge girder erection machine can simultaneously erect the pier stud, the capping beam and the upper structure, and reduce the processes of investigation of an under-bridge hoisting field, leveling of a construction road and the like, thereby reducing the investment of materials, personnel and equipment for paving the construction field. The utilization rate of mechanical equipment is improved, and the fuel power cost is reduced.
3. The safety is high. The construction method has the advantages that the construction method is completed in a factory, and the erected bridge is used as a transportation access way, so that standardized and standardized management is facilitated, the potential safety hazards of field high-altitude operation procedures and operating personnel are reduced, and the safety risk is reduced.
4. And the environmental pollution is reduced. The components are prefabricated in a factory, and are supplied, transported and installed in a concentrated mode at fixed points, noise is reduced to the maximum extent, road occupation and temporary land acquisition are reduced, precious natural environment and farmlands are protected, and influences of field construction on the surrounding environment and traffic are effectively controlled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of horizontal lifting of prefabricated columns;
FIG. 3 is a schematic view of the prefabricated column turned upside down;
FIG. 4 is a schematic floor plan of a prefabricated column;
FIG. 5 is a vertical schematic view of a prefabricated column;
FIG. 6 is a schematic view of the handling of the precast capping beam;
FIG. 7 is a schematic structural view of the main leg;
fig. 8 is a schematic structural view of a first spreader;
figure 9 is a schematic view of a second spreader handling upright;
fig. 10 is a schematic view of a second spreader handling T-beams;
figure 11 is a schematic view of the movement of the secondary load-bearing leg;
FIG. 12 is a schematic view of the movement of the main load-bearing leg;
FIG. 13 is a schematic view of the movement of the main truss;
figure 14 is a schematic view of the movement of the secondary load-bearing leg;
FIG. 15 is a schematic structural view of a primary truss;
reference numbers in the figures: the lifting device comprises a main supporting leg 1, a jacking oil cylinder 1-1, an inner telescopic sleeve 1-2, an outer telescopic sleeve 1-3, a main bearing supporting leg 2, an auxiliary bearing supporting leg 3, a first auxiliary supporting leg 4, a main truss 5, a first section 5-1, a second section 5-2, a third section 5-3, a fourth section 5-4, a fifth section 5-5, a sixth section 5-6, a seventh section 5-7, an eighth section 5-8, a first crane 6, a first lifting appliance 7, a second crane 8, a second lifting appliance 9 and a second auxiliary supporting leg 10.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-15, the prefabricated bridge pier-beam integrated bridge girder erection machine comprises a main truss 5, a first crane 6, a second crane 8, a main leg 1, a main bearing leg 2, an auxiliary bearing leg 3, a first auxiliary leg 4 and a second auxiliary leg 10; the first crane 6 and the second crane 8 are slidably connected to the top of the main truss 5, the first crane 6 is provided with a first lifting appliance 7, and the second crane 8 is provided with a second lifting appliance 9; the main supporting leg 1, the main bearing supporting leg 2, the auxiliary bearing supporting leg 3, the first auxiliary supporting leg 4 and the second auxiliary supporting leg 10 are detachably connected to the bottom of the main truss 5.
The main truss 5 level sets up, and the main truss 5 top is formed with the track with first jack-up driving 6 and 8 looks adaptations of second jack-up driving, the track sets up along the length direction of main truss 5, first jack-up driving 6 and second jack-up driving 8 move through the motor drive, main landing leg 1, main bearing landing leg 2, vice bearing landing leg 3, first auxiliary landing leg 4 and the equal vertical setting in main truss 5 bottom of second auxiliary landing leg 10, main landing leg 1, main bearing landing leg 2, vice bearing landing leg 3, first auxiliary landing leg 4 and the different positions department that second auxiliary landing leg 10 is located main truss 5, thereby support main truss 5, make main truss 5 level overhead setting under the effect of main landing leg 1, main bearing landing leg 2, vice bearing landing leg 3, first auxiliary landing leg 4 and second auxiliary landing leg 10.
The main truss 5 is formed by splicing a plurality of sections, the number of the sections of the main truss 5 is set according to the length of the main truss 5 which is actually required, the length of the main truss 5 is set according to the distance between the adjacent prefabricated stand columns, and the length of the main truss 5 is not less than twice of the distance between the adjacent prefabricated stand columns.
All be equipped with hydraulic system on vice bearing landing leg 3, first auxiliary leg 4 and the auxiliary leg 10 of second, vice bearing landing leg 3, first auxiliary leg 4 and the auxiliary leg 10 of second are including the pneumatic cylinder and the telescopic link that are connected, and the pneumatic cylinder drives the flexible of telescopic link, and the telescopic link is connected with main truss 5 is detachable.
The first crane 6 is rotatably connected to the main truss 5, a rotary disc which is rotatably connected is formed on the first crane 6, the first lifting appliance 7 is located on the rotary disc, the rotary disc is connected with a motor, and the rotary disc can be driven to rotate under the action of the motor, so that the first lifting appliance 7 is driven to rotate.
The main supporting leg 1 is of a telescopic structure, a jacking oil cylinder 1-1 is arranged below the main supporting leg 1, an inner telescopic sleeve 1-2 is arranged on the outer side of the jacking oil cylinder 1-1, an outer telescopic sleeve 1-3 is arranged on the outer side of the inner telescopic sleeve 1-2, the inner telescopic sleeve 1-2 and the outer telescopic sleeve 1-3 are sleeved, the outer telescopic sleeve 1-3 is sleeved outside the inner telescopic sleeve 1-2, the jacking oil cylinder 1-1 is connected with a telescopic rod, the telescopic rod penetrates through the inner telescopic sleeve 1-2 and the outer telescopic sleeve 1-3, and the main supporting leg 1 is driven by the jacking oil cylinder 1-1 to stretch to adapt to bridge erection at different heights.
In the prefabrication process of an actual bridge, the method comprises the following steps of:
step A: the method comprises the following steps of dividing a tie beam into a front pier, a middle pier and a rear pier according to the installation condition of the bridge, wherein the front pier is in a form to be installed, a prefabricated stand column and a prefabricated capping beam are installed on the middle pier, a prefabricated stand column, a prefabricated capping beam and a prefabricated T beam are installed on the rear pier, the middle pier is located between the front pier and the rear pier, the tie beam required by the bridge is installed in advance, the two prefabricated stand columns are installed, and the prefabricated capping beam and the prefabricated T beam are installed on the prefabricated stand columns.
And B: assembling by a bridge girder erection machine; and standing the front supporting legs on the front side of a front pier tie beam type bearing platform to be installed, standing the front middle supporting legs on the installed middle piers and the cover beam, and standing the rear bearing supporting legs on the prefabricated T-shaped beam with the erected rear piers.
According to a medium and small span beam bridge with a higher lower structure size proportion and a common span smaller than 40m, and with a general drawing as a basic structure, designing an integrally erected structural form and structure, firstly installing a main bearing leg 2, then erecting a first section 5-1 of a main truss 5 of a bridge girder erection machine, erecting a temporary support, installing a second section 5-2 and a third section 5-3 of the main truss 5, then installing an auxiliary bearing leg 3, then installing a fourth section 5-4, then installing a first crane 6 and a second crane 8 on the main truss 5, and installing a fifth section 5-5; dismantling the temporary support, and installing the electric power system of the main bearing supporting leg 2 and the auxiliary bearing supporting leg 3; moving the main truss 5 integrally forward by one section, installing a sixth section 5-6, moving the main truss 5 integrally forward by one section, installing a first auxiliary leg 4 on the fifth section 5-5, and installing a seventh section 5-7; and the whole main truss 5 moves forwards by 7m again, the second auxiliary supporting leg 10 is arranged on the seventh section 5-7, the eighth section 5-8 is arranged, the whole main truss 5 moves forwards to the designed position, the main supporting leg 1 is arranged, and the bridge girder erection machine is debugged and installed.
And C: and (5) testing the bridge girder erection machine.
Stress test in order to examine the strength of the main part of the main truss 5 or the member, the actual stress of the main stressed part of the main truss 5 or the member under the action of load is measured and compared with the theoretical calculated value. After the bridge girder erection machine is assembled, displacement observation is carried out on each point before and after each working condition test, horizontal displacement is observed at the middle position of the main supporting leg 1, and vertical displacement is measured at other points, such as the tail part of the bridge girder erection machine, the middle parts of the cross beams of the main bearing supporting leg 2 and the auxiliary bearing supporting leg 3, the midspan position of the main truss 5 and the top of the main supporting leg 1.
The load test comprises the following steps: no-load test, 1.1 times rated load dynamic load test and 1.25 times rated load static load test. The main test states comprise dynamic load and static load tests for simulating the walking and transverse moving working conditions of the stand column. The most unfavorable working condition of the upright column is that the upright column is lifted in a vertical state by a single point, and steel with corresponding weight is adopted for replacement because the shape of the upright column component is not favorable for applying balance weight; the prefabricated capping beam is tested by adopting a method of adding a balance weight.
The column test adopts a section steel bracket and an iron box as loads, a single hoisting steel wire rope is 6m long phi 66mm steel wire ropes, 4 steel wire ropes are needed in total, and the steel wire ropes are connected with the bracket by adopting 50t shackles. The weight of the steel section bracket and the steel plate is 10t, the weight of each iron box is 7t, the total weight is 24, and the total weight is 168 t. The capping beam load test adopts a capping beam and a steel plate, the specification of the steel plate is 2.0 multiplied by 6.0m, when the load is 100t, the self weight of the capping beam is removed by 84t, the steel material is required to be 16t, and the total height is about 17 cm.
Step D: and (6) mounting the prefabricated stand column.
The prefabricated stand column is transported to a beam transporting vehicle on the bridge floor through a lifting appliance, the beam transporting vehicle adopts four shafts and two lines, so that loads are distributed on at least 4 beams, the beam transporting vehicle is transported to a bridge girder erection machine to feed the beams, a first lifting appliance 7 of a first crane 6 fixes embedded parts at the top of the prefabricated stand column, a bottom-mounted second lifting appliance 9 of a second crane 8 fixes the tail part of the stand column through a pin shaft, and the first crane 6 and the second crane 8 lift and lift the stand column.
The method comprises the steps that a first lifting appliance 7 and a second lifting appliance 9 respectively lift two ends of a prefabricated stand column, the prefabricated stand column is driven to move through a first lifting travelling crane 6 and a second lifting travelling crane 8, the prefabricated stand column is placed down simultaneously through the first lifting travelling crane 7 and the second lifting travelling crane 9 after the prefabricated stand column moves to a required position, the second lifting travelling crane 8 moves close to the first lifting travelling crane 6, the stand column is placed on the ground through the second lifting appliance 9 when the prefabricated stand column is 74 degrees, the second lifting appliance 9 on the prefabricated stand column is dismounted until the prefabricated stand column is vertical through the first lifting appliance 7, a bracket is installed near the central axis of the tail portion of the prefabricated stand column, a semi-grouting sleeve at the bottom of the stand column is flushed with water, whether the sleeve is communicated is checked, and the prefabricated stand column is lifted to a front.
The method comprises the steps that ink lines are used for popping out the axis and the four sides of a prefabricated stand column on the front pier top, a slurry blocking template is installed at a position 5cm away from the four sides of the stand column, 2 limiting devices are installed on each side of the slurry blocking template, rubber slurry stop plugs are added to pre-embedded steel bars on the front pier top, and if the front pier top elevation, the height of the prefabricated stand column and the prefabricated cover beam bottom elevation have errors, a steel plate is placed in the center of the position of the prefabricated stand column installed on the front pier top to adjust the height.
The position of the front pier top installation upright post needs to be roughened, the position of the central steel plate does not need to be roughened, and the roughening needs to be carried out until the concrete aggregate is exposed. When first overhead traveling crane 6 hoisted the prefabricated stand to the mounted position, pier embedded steel bar before with prefabricated stand embedded sleeve alignment, the preceding pier bottom surface of prefabricated stand below is paved with and is sat the thick liquids after, and the 7 lifting hooks uninstallation of first hoist 7 of first overhead traveling crane 6 makes central steel sheet atress gradually, carries out the adjustment of prefabricated stand planar position through stop device for prefabricated stand center aligns with preceding pier central line.
The total station observes the axis of the top end of the stand column in two directions of the prefabricated stand column, and finely adjusts the jacks if the deviation exists, after the deviation of the top of the prefabricated stand column meets the requirement, all the jacks are locked, the lifting hook is loosened, the lifting appliance is removed, the shackle is removed, overflowed mortar is removed, and the jacks and the brackets can be removed after 24 hours of equal strength of the mortar in the cushion layer.
After the strength is equal, prefabricating a column sleeve for grouting, installing an extension grouting pipe, enabling grouting to enter from a lower grouting hole and exit from an upper grouting hole, enabling the pressure to reach 1MPa and the pressure to be stabilized for 10s when grouting is carried out, enabling the grouting to stop when thick slurry overflows, sealing a grouting opening by using a valve, and cleaning redundant grouting material. After the strength is equal, the grouting pipe is dismantled, and the grouting opening is sealed by the grout stopping plug.
After the prefabricated stand column on one side is installed, the prefabricated stand column on the other side is installed, steel pipes are installed in the outermost two main ribs on the inner side of the prefabricated stand column in a crossed mode through oblique symmetry before the prefabricated stand column is finely adjusted, and the distance between the two prefabricated stand columns is controlled in a positioning mode so as to guarantee smooth installation of the prefabricated capping beam.
Step E: and (5) installing the prefabricated capping beam.
The top hanging points of the prefabricated stand columns are cut, 2 adjusting cushion blocks are arranged at the tops of the prefabricated stand columns, the positions of the cushion blocks and the hanging points of the prefabricated stand columns are vertically arranged, the distance between every two 1.5m stand column cushion blocks is 75cm, the cushion blocks are in a square shape of 17cm multiplied by 17cm, the height of the top of each stand column can be adjusted by adding rubber pads and steel plates, the heights of the two cushion blocks are kept on the same horizontal plane, and the bottoms of the prefabricated bent caps are chiseled except for the cushion blocks.
D, conveying the prefabricated capping beam to a beam conveying vehicle on the bridge floor, conveying the beam conveying vehicle to a bridge girder erection machine for beam feeding, connecting a first lifting appliance 7 of the first crane 6 with the prefabricated capping beam fine steel through a connector by adopting fine steel with the diameter of 25, lifting the prefabricated capping beam by the first lifting appliance 7, enabling the prefabricated capping beam to advance in the longitudinal posture under the action of the first crane 6, horizontally rotating the prefabricated capping beam for 90 degrees to form a transverse posture after the prefabricated capping beam is close to the prefabricated upright post installed in the step D, continuing to advance under the action of the first crane 6 until the required installation position is reached, and adopting a manual traction mode when the prefabricated capping beam is lifted and rotated and is not less than 7 meters away from the main supporting leg 1 and is close to the main supporting leg 1.
Transfer prefabricated bent cap installation operation platform, operation platform is U type structure, and upper portion can catch on prefabricated bent cap and make whole operation platform hang on the bent cap, and 6 lifting bent caps of first overhead traveling crane make its horizontal gesture move ahead toward the front pier, and operation platform can play the effect of interim and stand location, and operation platform goes the upright post earlier, then prefabricated stand embedded reinforcement carries out the accuracy with prefabricated bent cap embedded sleeve and counterpoints.
The prefabricated stand top surface is paved with the mortar bed course, the surface is screeded, only starch the stopper and be a little higher than the mortar, prefabricated bent cap is transferred and is overflowed until the stand four sides all have the thick liquids, sit and starching the back, demolish the anchor point of first hoist 7 and prefabricated bent cap, hoist pulp press and guardrail to the bent cap top, wait strong back, with the mud jacking pipe at high-pressure squirt pressure test bent cap top, black is for advancing the thick liquid pipe, white is out the thick liquid pipe, hydroenergy emits along the white pipe, can carry out the grout of bent cap, when the thick liquid is overflowed to the white pipe, can stop the grout.
Step F: and (3) passing a hole through a bridge girder erection machine, moving the first crane trolley 6 and the second crane trolley 8 to the position of the second auxiliary supporting leg 10, jacking the first auxiliary supporting leg 4 and the second auxiliary supporting leg 10, hanging the auxiliary bearing supporting leg 3 by using a hanging rod and locking the transverse moving wheel set, and moving the auxiliary bearing supporting leg 3 to the position of the first auxiliary supporting leg 4.
The auxiliary bearing supporting leg 3 is horizontally placed on a bridge floor by using a wood pad, a hanging rod is removed, the limitation of the transverse moving wheel set is removed, the first auxiliary supporting leg 4 and the second auxiliary supporting leg 10 are descended to prevent the first auxiliary supporting leg from being stressed, the main bearing supporting leg 2 is hung by using the hanging rod and locked by the transverse moving wheel set, a forward pier moves to a prefabricated capping beam, the main bearing supporting leg 2 and the prefabricated capping beam or other fixed objects are pulled by using a manual hoist during anchoring, the height of the main supporting leg 1 is adjusted, the main supporting leg 1 is fixed by using a pin shaft, the jacking oil cylinder 1-1 is prevented from being stressed, the hanging rod of the main bearing supporting leg 2 is removed, and the limitation of.
The first crane 6 and the second crane 8 are moved to a first auxiliary supporting leg 4, the main supporting leg 1 is lifted upwards, the first auxiliary supporting leg 4 and the second auxiliary supporting leg 10 are lifted to leave the bridge floor, the main truss 5 is moved towards the next front pier, the first auxiliary supporting leg 4 is moved to the end of a T-shaped beam, the second auxiliary supporting leg 10 is close to an auxiliary bearing supporting leg 3, the first auxiliary supporting leg 4 and the second auxiliary supporting leg 10 are lowered and supported by using sleepers, the main supporting leg 1 is stood on the front side of a front pier beam type bearing platform to be installed, and the main bearing supporting leg 2, the auxiliary bearing supporting leg 3, the first auxiliary supporting leg 4 and the second auxiliary supporting leg 10 are anchored.
The lifting of vice bearing leg 3 moves to first supplementary landing leg 4 department, and the jib of vice bearing leg 3 is demolishd and is removed the sideslip wheelset restriction, with first jack-up driving 6 and the forward movement of second jack-up driving 8, and the second hoist 9 of second jack-up driving 8 is drawn 3 crossbeams of vice bearing leg, moves about the crossbeam, lifts up first supplementary landing leg 4 and the supplementary landing leg 10 of second, lets 3 atress of vice bearing leg, and the prefabricated T roof beam is erect to 3 anchor of vice bearing leg.
Step G: and (5) mounting the prefabricated T-shaped beam.
Before the T-shaped beam is erected, the height of the center of the support base stone is measured by using a total station and a prism, the height is compared with the design height, the height of a temporary support base is determined, the axis of the support base stone is lofted, the axis is popped up by using an ink line, and the center is marked by red.
Demolish the anchor of main landing leg 1 and tie beam finish rolling screw-thread steel, electric block hangs 1 both sides lug of main landing leg, realizes upwards flexible of main landing leg 1, place the bridge floor beam transporting car with the T roof beam on, support the T roof beam with the support frame and pull the T roof beam with the hand block with the beam transporting car, the boundary beam is adding wooden support at the beam-ends, the beam transporting car transports to the frame bridge crane and feeds the roof beam, first hoist 7 and the second hoist 9 of first crane 6 and second crane 8 are lifted and hung T roof beam both ends with wire rope.
And firstly installing the edge beam and then installing the middle beam, transversely moving the T beam to the upper space of the outermost side of the bridge edge by the two-wheeler, and aligning the main rib at the bottom of the web plate of the T beam to the center of the pad stone when the beam falls. The continuous section, installation temporary support before the support stone pad, temporary support comprises sand bucket and steel pipe, and accessible sand volume adjustment support height waits permanent support unblock back, can get rid of temporary support. The support is installed in advance to the non-continuous section, web bottom before the installation of T roof beam, and whether the stone pad keeps off thick liquid template will be leveled with the horizontal ruler inspection, when falling the roof beam, checks the T roof beam straightness that hangs down with the horizontal ruler, controls the interval of two roof beams with the horizontal ruler, and adjacent roof beam height mark needs to align.
Step H: and D, repeating the step D, the step E and the step F until the bridge installation is finished, and dismantling the bridge girder erection machine.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the main supporting leg 1, the jacking oil cylinder 1-1, the inner telescopic sleeve 1-2, the outer telescopic sleeve 1-3, the main bearing supporting leg 2, the auxiliary bearing supporting leg 3, the first auxiliary supporting leg 4, the main truss 5, the first section 5-1, the second section 5-2, the third section 5-3, the fourth section 5-4, the fifth section 5-5, the sixth section 5-6, the seventh section 5-7, the eighth section 5-8, the first crane 6, the first sling 7, the second crane 8, the second sling 9, the second auxiliary supporting leg 10 and other terms, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The prefabricated bridge pier-beam integrated bridge girder erection machine is characterized by comprising a main truss (5), a first crane (6), a second crane (8), a main supporting leg (1), a main bearing supporting leg (2), an auxiliary bearing supporting leg (3), a first auxiliary supporting leg (4) and a second auxiliary supporting leg (10); the first hoisting travelling crane (6) and the second hoisting travelling crane (8) are slidably connected to the top of the main truss (5), a first lifting appliance (7) is arranged on the first hoisting travelling crane (6), and a second lifting appliance (9) is arranged on the second hoisting travelling crane (8); the main supporting leg (1), the main bearing supporting leg (2), the auxiliary bearing supporting leg (3), the first auxiliary supporting leg (4) and the second auxiliary supporting leg (10) are detachably connected to the bottom of the main truss (5).
2. The precast bridge pier-beam integrated bridge girder erection machine according to claim 1, wherein the main girder (5) is assembled by a plurality of sections.
3. The precast bridge pier-beam integrated bridge girder erection machine according to claim 1, wherein a hydraulic system is arranged on each of the auxiliary load-bearing leg (3), the first auxiliary leg (4) and the second auxiliary leg (10).
4. A prefabricated bridge pier-beam integrated bridge girder erection machine according to claim 1, wherein the first crane trolley (6) is rotatably connected to the main girder (5).
5. The precast bridge pier-beam integrated bridge girder erection machine according to claim 1, wherein the main leg (1) is of a telescopic structure.
6. The precast bridge pier-beam integrated bridge girder erection machine according to claim 5, wherein a jacking cylinder (1-1) is arranged below the main supporting leg (1), an inner telescopic sleeve (1-2) is arranged outside the jacking cylinder (1-1), and an outer telescopic sleeve (1-3) is arranged outside the inner telescopic sleeve (1-2).
7. The construction method of the prefabricated bridge pier-beam integrated bridge girder erection machine comprises the prefabricated bridge pier-beam integrated bridge girder erection machine of claims 1-6, and is characterized by comprising the following steps:
step A: dividing the tie beam into a front pier, a middle pier and a rear pier according to the installation condition of the bridge, wherein the front pier is in a form to be installed, the middle pier is provided with a prefabricated upright post and a prefabricated capping beam, the rear pier is provided with a prefabricated upright post, a prefabricated capping beam and a prefabricated T-shaped beam, and the middle pier is positioned between the front pier and the rear pier;
and B: assembling by a bridge girder erection machine; standing front supporting legs on the front side of a front pier tie beam type bearing platform to be installed, standing front middle supporting legs on installed middle piers and capping beams, and standing rear bearing supporting legs on a prefabricated T beam with erected rear piers;
and C: testing a bridge girder erection machine;
step D: installing a prefabricated upright post, wherein a first lifting appliance (7) and a second lifting appliance (9) respectively play two ends of the prefabricated upright post, the prefabricated upright post is driven to move by a first lifting travelling crane (6) and a second lifting travelling crane (8), the first lifting appliance (7) and the second lifting appliance (9) are simultaneously placed after the prefabricated upright post moves to a required position, the second lifting travelling crane (8) moves close to the first lifting travelling crane (6), the upright post is placed on the ground by the second lifting appliance (9) when the prefabricated upright post is at 74 degrees, the second lifting appliance (9) on the prefabricated upright post is dismounted until the prefabricated upright post is vertical by the first lifting appliance (7), and the prefabricated upright post is lifted to a front pier required to be installed by the first lifting appliance (7);
step E: d, mounting the prefabricated capping beam, hoisting the prefabricated capping beam by a first hoisting tool (7), advancing the prefabricated capping beam in a longitudinal posture under the action of a first crane (6), horizontally rotating the prefabricated capping beam by 90 degrees to form a transverse posture after the prefabricated capping beam is close to the prefabricated upright post mounted in the step D, and continuously advancing under the action of the first crane (6) until the prefabricated capping beam reaches a required mounting position;
step F: a first crane (6) and a second crane (8) are moved to a second auxiliary leg (10) through a hole of a bridge girder erection machine, the first auxiliary leg (4) and the second auxiliary leg (10) are jacked, the auxiliary bearing leg (3) is moved to the first auxiliary leg (4), the main bearing leg (2) is moved to a cover beam of a front pier to be anchored, the first crane (6) and the second crane (8) are moved to the first auxiliary leg (4), the main leg (1) is lifted upwards, the first auxiliary leg (4) and the second auxiliary leg (10) are lifted away from a bridge floor, the main truss (5) is moved towards the next front pier to stand the main leg (1) on the front side of a beam type bearing platform of the front pier to be installed, anchoring the main bearing leg (2), the auxiliary bearing leg (3), the first auxiliary leg (4) and the second auxiliary leg (10);
step G: installing a prefabricated T beam, hoisting the T beam through a first hoisting tool (7) and a second hoisting tool (9), and moving the T beam to a required position under the action of a first hoisting crane (6) and a second hoisting crane (8);
step H: and D, repeating the step D, the step E and the step F until the bridge installation is finished, and dismantling the bridge girder erection machine.
8. The construction method of the prefabricated bridge pier-beam integrated bridge girder erection machine according to claim 7, wherein after the prefabricated stand columns are installed in place in the step D, the top ends of the stand columns are observed in 2 directions through a total station, and then fine-adjustment jacks are used for checking the verticality of the stand columns.
9. The construction method of the precast bridge pier-beam integrated bridge girder erection machine according to claim 7, wherein the distance between the precast capping beam in the step E and the main supporting leg (1) is not less than 7m during hoisting and rotating, and a manual traction mode is adopted when the precast capping beam is close to the main supporting leg (1).
10. The construction method of the precast bridge pier-beam integrated bridge girder erection machine according to claim 7, wherein when the T-shaped beam is erected in the step G, the side beam is installed firstly, and then the middle beam is installed.
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| CN202110233822.4A CN112854008A (en) | 2021-03-03 | 2021-03-03 | Prefabricated bridge pier and beam integrated bridge girder erection machine and construction method thereof |
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| CN113307147A (en) * | 2021-06-23 | 2021-08-27 | 中交路桥华东工程有限公司 | Gantry crane installation method |
| CN113373814A (en) * | 2021-06-11 | 2021-09-10 | 中铁工程机械研究设计院有限公司 | Highway bridge erecting method |
| CN114045751A (en) * | 2021-11-12 | 2022-02-15 | 保利长大工程有限公司 | Pile-beam integrated construction method for pipe pile foundation construction and cap beam-beam plate assembly |
| CN114541277A (en) * | 2022-04-01 | 2022-05-27 | 郑州新大方重工科技有限公司 | Fully-assembled bridging system, beam erecting and hole passing method |
| CN116905362A (en) * | 2023-07-11 | 2023-10-20 | 中交第二航务工程局有限公司 | Integrated device for butt joint installation of prefabricated pier column and wet joint pouring and construction method thereof |
| CN117721722A (en) * | 2023-11-17 | 2024-03-19 | 广东省高速公路有限公司 | Multi-span continuous operation pier-beam integrated bridge girder erection machine and application method thereof |
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