CN114319116A - Bridge combination beam erection and hoisting construction method - Google Patents
Bridge combination beam erection and hoisting construction method Download PDFInfo
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- CN114319116A CN114319116A CN202111597970.0A CN202111597970A CN114319116A CN 114319116 A CN114319116 A CN 114319116A CN 202111597970 A CN202111597970 A CN 202111597970A CN 114319116 A CN114319116 A CN 114319116A
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Abstract
The invention provides a construction method for erecting and hoisting a bridge combination beam, which belongs to the field of machinery and is used for constructing and placing a bridge support base; the first step is as follows: preparing a field, wherein the bridge girder erection machine needs to be spliced on a bridge head roadbed, and the roadbed needs to be smooth and compact to meet the installation load standard of the bridge girder erection machine; the second step is that: the compaction treatment of the roadbed, firstly, the bridge roadbed generally comprises a plurality of parts such as the roadbed, the road surface, the bridge, the tunnel engineering, the traffic engineering facility and the like, and the beneficial effects of the invention are as follows: the strength of the roadbed is guaranteed by the strong cement reinforced concrete granules, so that the pavement structure can be conveniently further erected and supported in the process of erecting the bridge and the subsequent process of erecting the bridge, and the structure laying in the aspect of supporting the lower bridge foundation is guaranteed by the adoption of the bridge roadbed processing mode.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a construction method for erecting and hoisting a bridge combination beam.
Background
The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for spanning obstacles;
the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like.
The existing bridge is too complicated in the erecting process, the bridge is not convenient to be erected coordinately, the strength of a roadbed supported by stress below the bridge is poor in the traditional erecting mode, the bridge is easy to be corroded by rainwater after being used for a long time, and the normal use of the bridge is influenced.
Disclosure of Invention
The invention aims to provide a construction method for erecting and hoisting a bridge combination beam, and aims to solve the problems that in the prior art, the erection mode of the existing bridge is too complicated in the erection process, the bridge is inconvenient to achieve the purpose of coordinately erecting, and the strength of a roadbed supported by a stress below the bridge is poor in the traditional erection mode.
In order to achieve the purpose, the invention provides the following technical scheme: the method comprises the following steps:
s1: constructing and placing a bridge supporting base;
s2: continuously constructing a bridge transport machine for constructing a transport bridge from the roadbed upwards;
s3: preparing a crane for erecting a bridge, and pushing and displacing along the position on the road surface;
s4: soft soil foundation treatment below the bridge read guiding roadbed;
s5: the support needs to be installed;
s6: the pushing structure is used for pushing a falling beam after mechanical traction;
s7: and (5) continuously erecting.
As a preferred scheme of the invention: according to the step of S1, the following substeps are carried out:
the first step is as follows: preparing a field, wherein the bridge girder erection machine needs to be spliced on a bridge head roadbed, and the roadbed needs to be smooth and compact to meet the installation load standard of the bridge girder erection machine;
the second step is that: the compaction treatment of the subgrade, the bridge subgrade generally is made up of several parts such as subgrade, road surface, bridge, tunnel engineering and traffic engineering facilities, the subgrade can adopt the linear structure built by soil or building stones, the preparation material of the subgrade is: the earth-rock discrete material can adopt cement reinforced concrete granules with better rigidity to prevent the roadbed from water inflow, so as to ensure the stressed compaction on the bridge roadbed, and meanwhile, the sand-rock filler coating can be combined with the road surface (the road surface consists of a cotton layer, a base layer, a bottom layer and a cushion layer) for erecting the bridge, and a layer of waterproof pad cloth with good waterproof performance is arranged on the cushion layer part to ensure the stability of the road cotton below the bridge under long-time stress;
the third step: the earth and stone material is as follows: asphalt concrete, gravel materials and rigid steel bar structures of the pavement;
the erection sequence is as follows: firstly, cleaning up broken branch sundries on the road surface, applying force to the road surface by using a road roller and leveling the road surface, paying attention to paving a corresponding structure on the road surface, and preventing the road surface from cracking when a subsequent bridge is pressed on the road surface so as to ensure that the paved roadbed meets the application standard;
after the soil at the bottom layer is compacted by the road roller, the waterproof pad cloth is laid, so that the erosion of water in rainy seasons and winter is avoided.
Water is the key factor that influences bridge road bed intensity and stability, if water is too much, just causes the erosion to the bridge road bed very easily, influences road bridge road bed stability and life-span, consequently does the drainage work to the road bridge road bed, can reduce the destruction of water to the road bridge road bed effectively, and constructor should pay attention to the drainage work to the road bridge road bed, and road bridge road bed drainage work mainly includes: firstly, ground drainage is the key point of road and bridge subgrade drainage, and construction units should pay more attention to the construction quality control of ground drainage;
the second underground drainage, the main mode of road bridge road bed underground drainage in our country at present has underdrains, blind ditches, infiltration ditches, etc., when carrying out the underground drainage construction to these several modes, the construction unit should carefully consider, and the third, road surface drainage, the road surface drainage mainly is to the road surface that causes the too big rainfall to erode, reduces the erosion of rainwater to the road surface.
As a preferred scheme of the invention: according to the technical scheme set in the step S2: the first step is as follows: need establish more suitable bridge erection structure waiting for the road surface moulding to finish, on the road surface composite structure further places the road surface again, through the apparatus of bridge erection in the structure on the road bed on road surface:
the bridge girder erection machine is provided with a longitudinal traveling track for the displacement of the bridge girder erection machine, and the traveling track bridge girder erection machine for the displacement and the longitudinal traveling track are arranged on two sides of the bridge girder erection machine;
when the bridge is erected and transported, the heavy bridge can be mechanically moved and erected in time;
the second step is that: firstly, correctly constructing the bridge erecting equipment:
construction units need to erect walking tracks on two sides of a road surface, and the erection standards of the erected tracks are as follows:
(1) the position of the erected bridge stress supporting structure is subject to the stacking of a bridge erecting machine force application grapple at the base layer position, the depth of the grapple is 10-20cm, the grapple position is set at the edge position of the road surface, and the assembling procedure of the bridge erecting machine is as follows: measuring and positioning, symmetrically assembling the electric flat car transport beams on two sides in a balanced manner, and laying and hoisting the main cross beam;
(2) detecting a horizontal road surface before erection: by shifting the beam position by means of the bridge girder erection machine, the hydraulic system associated with the bridge girder erection machine is utilized. The operation platform realizes preliminary debugging after the power is switched on, the hydraulic system is manually operated to control the bridge moving beams at the bridge erecting end to be in place and debugged one by one, and the power is switched on to check and debug the preliminary operation process, so that the mutual coordinated operation of the structures is realized, the coordinated processing is carried out with the external structures, and the pushing displacement of the structures is realized under the displacement action of the bridge erecting machine on the end surface structure along the displacement structure on the walking track;
the pushing displacement of the bridge girder erection machine is the length of the track when the bridge girder erection machine is laid, extended and displaced through the erection structure, and the bridge girder erection structure and the track are in mutual coordinated operation, so that the suspension structure is pushed and displaced along the bridge girder erection machine.
As a preferred scheme of the invention: according to the technical scheme in the step S3: firstly, a first step: the length on the displacement track is extended, then the direction of the bridge is uniformly laid, the bridge erecting machine is displaced to the appointed 2806464Zhou by the direction of the bridge, the position of the pushing direction is verified, the hoisting displacement of the bridge erecting trolley is realized by the aid of track displacement transmission, the electric flat carriage can be clamped, the normal operation of the trolley is ensured, and the bridge is pushed by the displacement of the walking box;
the second step is that: the feed beam is further displaced through the structure of the tunnel hole mounting groove, the self-propelled electric flat car structure is adopted to push the suspension beam, the pushing on the vehicle structure is achieved through the electric flat car condition, the set hoisting trolley plays a role of hoisting, the displacement on the end face structure is achieved through the traction structure, and the crane is displaced to the bridge to be transported through the gantry crane for bridging to clamp and push the transported bridge.
As a preferred scheme of the invention: according to the foregoing branch step in S4, the quality of the soft soil foundation treatment technology directly affects the stability and the service life of the road and bridge subgrade, and the soft soil foundation treatment technology mainly includes the following aspects. The roadbed filling and roadbed compaction construction technology is the first step of road bridge roadbed construction and is also a very key step, the strength and stability of the roadbed are directly influenced by the quality of the roadbed filling and roadbed compaction technology, the roadbed filling and roadbed compaction construction technology mainly comprises the following aspects that firstly, roadbed filling and the state have strict requirements on the roadbed filling of the road bridge, and the roadbed filling of the road bridge has more detailed regulations on the roadbed filling of the road bridge, the CBR value of the roadbed filling 0-30cm below the bottom of the highway and the first-level highway pavement is more than 8, and corresponding specified values are provided for an off-road bed and the filling below the off-road bed.
As a preferred scheme of the invention: according to the branching step in S5: the first step is as follows: firstly, an installer needs to pop out an ink line from a lowered central position on a lower beam seat, and after primary measurement is carried out, a temporarily fixed bridge supporting seat is placed according to a position point where the ink line needs to be positioned;
the second step is that: according to the position of the temporary bridge supporting seat, the erected bridge needs to be subjected to transient assembly control, and meanwhile, the bridge can be in the direction along the bridge in the displacement state, so that personnel are required to perform further treatment;
firstly, pushing displacement is carried out through a corresponding structure, and then the bridge is further pushed and displaced by utilizing the structure of the end face, so that the pushing structure of the bridge is pushed in a relatively expanded manner;
the main structure is as follows: the bridge erecting machine is used for pushing the bridge after the bridge is erected.
As a preferred scheme of the invention: according to the branching step in S6: the first step is as follows: firstly, the personnel need to carry out the handling of putting down the roof beam that falls of pushing away, the user needs to start the dolly, the roof beam structure that the combination that places the dolly below is assembled, and the material after the equipment is lifted by the equipment again, hoist and mount and in the hoisting process, through utilizing structural push effect down, with the bridge through doing the propelling movement with structural bridge frame and erect, and with the position of striding before the structure of roof beam transportation, the sideslip bridging machine, transport the roof beam to the top of waiting to erect the roof beam support, support through the atress of erecting the roof beam support down, do that central point with it and put down, detect the straightness that hangs down of roof beam body structure through measuring the suspension wire method between the roof beam body, can erect once more after qualified.
As a preferred scheme of the invention: according to the corresponding branch enumerated in S7: the first step is as follows: after the bridge erection of the area is completed, the bridge is checked to confirm that no fault exists, the supporting legs at the middle end and the rear end are jacked up, then the box is controlled to be moved backwards and is converted into the longitudinal direction, the falling of the supporting legs at the middle top and the rear top is ensured, the walking box is made to fall onto the longitudinal rail, the two small parking spaces are lifted to move backwards, then the front supporting legs are folded to continuously detach the rail in the front direction, and the walking box is transferred to the rear direction.
Compared with the prior art, the invention has the beneficial effects that:
1) the strength of the roadbed is ensured by the strong cement reinforced concrete granules, so that the pavement structure can be conveniently further erected and supported in the process of erecting the bridge, and the structure laying in the aspect of supporting the lower bridge foundation is ensured by the treatment mode of the bridge roadbed;
2) the detection of the erected horizontal road surface ensures that the erected bridge can be subjected to transient assembly control according to the position of a temporary bridge supporting seat when the bridge is erected subsequently, and meanwhile, the bridge can be in the direction along the direction under the condition of bridge displacement, so that personnel are required to perform further treatment; the pushing displacement is carried out through the corresponding structure, then the bridge is further pushed and displaced by utilizing the structure of the end face, and the pushing structure of the bridge is pushed in an expansion mode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Examples
The invention provides the following technical scheme: the method comprises the following steps:
s1: constructing and placing a bridge supporting base;
the first step is as follows: preparing a field, wherein the bridge girder erection machine needs to be spliced on a bridge head roadbed, and the roadbed needs to be smooth and compact to meet the installation load standard of the bridge girder erection machine;
the second step is that: the compaction treatment of the subgrade, the bridge subgrade generally is made up of several parts such as subgrade, road surface, bridge, tunnel engineering and traffic engineering facilities, the subgrade can adopt the linear structure built by soil or building stones, the preparation material of the subgrade is: the earth-rock discrete material can adopt cement reinforced concrete granules with better rigidity to prevent the roadbed from water inflow, so as to ensure the stressed compaction on the bridge roadbed, and meanwhile, the sand-rock filler coating can be combined with the road surface (the road surface consists of a cotton layer, a base layer, a bottom layer and a cushion layer) for erecting the bridge, and a layer of waterproof pad cloth with good waterproof performance is arranged on the cushion layer part to ensure the stability of the road cotton below the bridge under long-time stress;
the third step: the earth and stone material is as follows: asphalt concrete, gravel materials and rigid steel bar structures of the pavement;
the erection sequence is as follows: firstly, cleaning up broken branch sundries on the road surface, applying force to the road surface by using a road roller and leveling the road surface, paying attention to paving a corresponding structure on the road surface, and preventing the road surface from cracking when a subsequent bridge is pressed on the road surface so as to ensure that the paved roadbed meets the application standard;
after the soil at the bottom layer is compacted by the road roller, the waterproof pad cloth is laid, so that the erosion of water in rainy seasons and winter is avoided.
Water is the key factor that influences bridge road bed intensity and stability, if water is too much, just causes the erosion to the bridge road bed very easily, influences road bridge road bed stability and life-span, consequently does the drainage work to the road bridge road bed, can reduce the destruction of water to the road bridge road bed effectively, and constructor should pay attention to the drainage work to the road bridge road bed, and road bridge road bed drainage work mainly includes: firstly, ground drainage is the key point of road and bridge subgrade drainage, and construction units should pay more attention to the construction quality control of ground drainage;
the second underground drainage, the main mode of road bridge road bed underground drainage in our country at present has underdrains, blind ditches, infiltration ditches, etc., when carrying out the underground drainage construction to these several modes, the construction unit should carefully consider, and the third, road surface drainage, the road surface drainage mainly is to the road surface that causes the too big rainfall to erode, reduces the erosion of rainwater to the road surface.
S2: continuously constructing a bridge transport machine for constructing a transport bridge from the roadbed upwards;
the first step is as follows: need establish more suitable bridge erection structure waiting for the road surface moulding to finish, on the road surface composite structure further places the road surface again, through the apparatus of bridge erection in the structure on the road bed on road surface:
the bridge girder erection machine is provided with a longitudinal traveling track for the displacement of the bridge girder erection machine, and the traveling track bridge girder erection machine for the displacement and the longitudinal traveling track are arranged on two sides of the bridge girder erection machine;
when the bridge is erected and transported, the heavy bridge can be mechanically moved and erected in time;
the second step is that: firstly, correctly constructing the bridge erecting equipment:
construction units need to erect walking tracks on two sides of a road surface, and the erection standards of the erected tracks are as follows:
(1) the position of the erected bridge stress supporting structure is subject to the stacking of a bridge erecting machine force application grapple at the base layer position, the depth of the grapple is 10-20cm, the grapple position is set at the edge position of the road surface, and the assembling procedure of the bridge erecting machine is as follows: measuring and positioning, symmetrically assembling the electric flat car transport beams on two sides in a balanced manner, and laying and hoisting the main cross beam;
(2) detecting a horizontal road surface before erection: by shifting the beam position by means of the bridge girder erection machine, the hydraulic system associated with the bridge girder erection machine is utilized. The operation platform realizes preliminary debugging after the power is switched on, the hydraulic system is manually operated to control the bridge moving beams at the bridge erecting end to be in place and debugged one by one, and the power is switched on to check and debug the preliminary operation process, so that the mutual coordinated operation of the structures is realized, the coordinated processing is carried out with the external structures, and the pushing displacement of the structures is realized under the displacement action of the bridge erecting machine on the end surface structure along the displacement structure on the walking track;
(3) the pushing displacement of the bridge girder erection machine is the length of the track when the bridge girder erection machine is laid, extended and displaced through the erection structure, and the bridge girder erection structure and the track are in mutual coordinated operation, so that the suspension structure is pushed and displaced along the bridge girder erection machine.
S3: preparing a crane for erecting a bridge, and pushing and displacing along the position on the road surface;
firstly, a first step: the length on the displacement track is extended, then the direction of the bridge is uniformly laid, the bridge erecting machine is displaced to the appointed 2806464Zhou by the direction of the bridge, the position of the pushing direction is verified, the hoisting displacement of the bridge erecting trolley is realized by the aid of track displacement transmission, the electric flat carriage can be clamped, the normal operation of the trolley is ensured, and the bridge is pushed by the displacement of the walking box;
the second step is that: the feed beam is further displaced through the structure of the tunnel hole mounting groove, the self-propelled electric flat car structure is adopted to push the suspension beam, the pushing on the vehicle structure is achieved through the electric flat car condition, the set hoisting trolley plays a role of hoisting, the displacement on the end face structure is achieved through the traction structure, and the crane is displaced to the bridge to be transported through the gantry crane for bridging to clamp and push the transported bridge.
S4: soft soil foundation treatment below the bridge read guiding roadbed;
the quality of the soft soil foundation treatment technology directly influences the stability and the service life of the road and bridge subgrade, and the soft soil foundation treatment technology mainly comprises the following aspects. The roadbed filling and roadbed compaction construction technology is the first step of the road bridge roadbed construction and is also a very key step, the strength and stability of the roadbed are directly affected by the quality of the roadbed filling and roadbed compaction technology, and the roadbed filling and roadbed compaction construction technology mainly comprises the following aspects. Firstly, roadbed filling and countries have strict requirements on roadbed filling of roads and bridges and have more detailed regulations on roadbed filling of roads and bridges, the CBR value of roadbed filling 0-30cm below the bottoms of highway and first-level highway road surfaces is more than 8, and corresponding specified values are given for a lower roadbed and filling soil below the lower roadbed.
S5: the support needs to be installed;
the first step is as follows: firstly, an installer needs to pop out an ink line from a lowered central position on a lower beam seat, and after primary measurement is carried out, a temporarily fixed bridge supporting seat is placed according to a position point where the ink line needs to be positioned;
the second step is that: according to the position of the temporary bridge supporting seat, the erected bridge needs to be subjected to transient assembly control, and meanwhile, the bridge can be in the direction along the bridge in the displacement state, so that personnel are required to perform further treatment;
firstly, pushing displacement is carried out through a corresponding structure, and then the bridge is further pushed and displaced by utilizing the structure of the end face, so that the pushing structure of the bridge is pushed in a relatively expanded manner;
the main structure is as follows: the bridge erecting machine is used for pushing the bridge after the bridge is erected.
S6: the pushing structure is used for pushing a falling beam after mechanical traction;
the first step is as follows: firstly, the personnel need to carry out the handling of putting down the roof beam that falls of pushing away, the user needs to start the dolly, the roof beam structure that the combination that places the dolly below is assembled, and the material after the equipment is lifted by the equipment again, hoist and mount and in the hoisting process, through utilizing structural push effect down, with the bridge through doing the propelling movement with structural bridge frame and erect, and with the position of striding before the structure of roof beam transportation, the sideslip bridging machine, transport the roof beam to the top of waiting to erect the roof beam support, support through the atress of erecting the roof beam support down, do that central point with it and put down, detect the straightness that hangs down of roof beam body structure through measuring the suspension wire method between the roof beam body, can erect once more after qualified.
S7: and (5) continuously erecting.
The first step is as follows: after the bridge erection of the area is completed, the bridge is checked to confirm that no fault exists, the supporting legs at the middle end and the rear end are jacked up, then the box is controlled to be moved backwards and is converted into the longitudinal direction, the falling of the supporting legs at the middle top and the rear top is ensured, the walking box is made to fall onto the longitudinal rail, the two small parking spaces are lifted to move backwards, then the front supporting legs are folded to continuously detach the rail in the front direction, and the walking box is transferred to the rear direction.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A bridge combination beam erection hoisting construction method is characterized by comprising the following steps:
s1: constructing and placing a bridge supporting base;
s2: continuously constructing a bridge transport machine for constructing a transport bridge from the roadbed upwards;
s3: preparing a crane for erecting a bridge, and pushing and displacing along the position on the road surface;
s4: soft soil foundation treatment below the bridge read guiding roadbed;
s5: the support needs to be installed;
s6: the pushing structure is used for pushing a falling beam after mechanical traction;
s7: and (5) continuously erecting.
2. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the step of S1, the following substeps are carried out:
the first step is as follows: preparing a field, wherein the bridge girder erection machine needs to be spliced on a bridge head roadbed, and the roadbed needs to be smooth and compact to meet the installation load standard of the bridge girder erection machine;
the second step is that: the compaction treatment of the subgrade, the bridge subgrade generally is made up of several parts such as subgrade, road surface, bridge, tunnel engineering and traffic engineering facilities, the subgrade can adopt the linear structure built by soil or building stones, the preparation material of the subgrade is: the earth-rock discrete material can adopt cement reinforced concrete granules with better rigidity to prevent the roadbed from water inflow, so as to ensure the stressed compaction on the bridge roadbed, and simultaneously combine with a sand-rock filler coating to be arranged on the road surface (the road surface consists of a cotton layer, a base layer, a bottom layer and a cushion layer) for erecting the bridge, and a layer of waterproof pad cloth with good waterproof performance is arranged on the cushion layer part to ensure the stability of the road cotton below the bridge under long-time stress;
the third step: the earth and stone material is as follows: asphalt concrete, gravel materials and rigid steel bar structures of the pavement;
the erection sequence is as follows: firstly, cleaning up broken branch sundries on the road surface, applying force to the road surface by using a road roller and leveling the road surface, paying attention to paving a corresponding structure on the road surface, and preventing the road surface from cracking when a subsequent bridge is pressed on the road surface so as to ensure that the paved roadbed meets the application standard;
after the soil at the bottom layer is compacted by the road roller, the waterproof pad cloth is laid, so that the erosion of water in rainy seasons and winter is avoided.
Water is the key factor that influences bridge road bed intensity and stability, if water is too much, just causes the erosion to the bridge road bed very easily, influences road bridge road bed stability and life-span, consequently does the drainage work to the road bridge road bed, can reduce the destruction of water to the road bridge road bed effectively, and constructor should pay attention to the drainage work to the road bridge road bed, and road bridge road bed drainage work mainly includes: firstly, ground drainage is the key point of road and bridge subgrade drainage, and construction units should pay more attention to the construction quality control of ground drainage;
the second underground drainage, the main mode of road bridge road bed underground drainage in our country at present has underdrains, blind ditches, infiltration ditches, etc., when carrying out the underground drainage construction to these several modes, the construction unit should carefully consider, and the third, road surface drainage, the road surface drainage mainly is to the road surface that causes the too big rainfall to erode, reduces the erosion of rainwater to the road surface.
3. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the technical scheme set in the step S2: the first step is as follows: need establish more suitable bridge erection structure waiting for the road surface moulding to finish, on the road surface composite structure further places the road surface again, through the apparatus of bridge erection in the structure on the road bed on road surface:
the bridge girder erection machine is provided with a longitudinal traveling track for the displacement of the bridge girder erection machine, and the traveling track bridge girder erection machine for the displacement and the longitudinal traveling track are arranged on two sides of the bridge girder erection machine;
when the bridge is erected and transported, the heavy bridge can be mechanically moved and erected in time;
the second step is that: firstly, correctly constructing the bridge erecting equipment:
construction units need to erect walking tracks on two sides of a road surface, and the erection standards of the erected tracks are as follows:
(1) the position of the erected bridge stress supporting structure is subject to the stacking of a bridge erecting machine force application grapple at the base layer position, the depth of the grapple is 10-20cm, the grapple position is set at the edge position of the road surface, and the assembling procedure of the bridge erecting machine is as follows: measuring and positioning, symmetrically assembling the electric flat car transport beams on two sides in a balanced manner, and laying and hoisting the main cross beam;
(2) detecting a horizontal road surface before erection: by shifting the beam position by means of the bridge girder erection machine, the hydraulic system associated with the bridge girder erection machine is utilized. The operation platform realizes preliminary debugging after the power is switched on, the hydraulic system is manually operated to control the bridge moving beams at the bridge erecting end to be in place and debugged one by one, and the power is switched on to check and debug the preliminary operation process, so that the mutual coordinated operation of the structures is realized, the coordinated processing is carried out with the external structures, and the pushing displacement of the structures is realized under the displacement action of the bridge erecting machine on the end surface structure along the displacement structure on the walking track;
the pushing displacement of the bridge girder erection machine is the length of the track when the bridge girder erection machine is laid, extended and displaced through the erection structure, and the bridge girder erection structure and the track are in mutual coordinated operation, so that the suspension structure is pushed and displaced along the bridge girder erection machine.
4. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the technical scheme in the step S3: firstly, a first step: the length on the displacement track is extended, then the direction of the bridge is uniformly laid, the bridge erecting machine is displaced to the appointed 2806464Zhou by the direction of the bridge, the position of the pushing direction is verified, the hoisting displacement of the bridge erecting trolley is realized by the aid of track displacement transmission, the electric flat carriage can be clamped, the normal operation of the trolley is ensured, and the bridge is pushed by the displacement of the walking box;
the second step is that: the feed beam is further displaced through the structure of the tunnel hole mounting groove, the self-propelled electric flat car structure is adopted to push the suspension beam, the pushing on the vehicle structure is achieved through the electric flat car condition, the set hoisting trolley plays a role of hoisting, the displacement on the end face structure is achieved through the traction structure, and the crane is displaced to the bridge to be transported through the gantry crane for bridging to clamp and push the transported bridge.
5. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the foregoing branch step in S4, the quality of the soft soil foundation treatment technology directly affects the stability and the service life of the road and bridge subgrade, and the soft soil foundation treatment technology mainly includes the following aspects. The roadbed filling and roadbed compaction construction technology is the first step of road bridge roadbed construction and is also a very key step, the strength and stability of the roadbed are directly influenced by the quality of the roadbed filling and roadbed compaction technology, the roadbed filling and roadbed compaction construction technology mainly comprises the following aspects that firstly, roadbed filling and the state have strict requirements on the roadbed filling of the road bridge, and the roadbed filling of the road bridge has more detailed regulations on the roadbed filling of the road bridge, the CBR value of the roadbed filling 0-30cm below the bottom of the highway and the first-level highway pavement is more than 8, and corresponding specified values are provided for an off-road bed and the filling below the off-road bed.
6. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the branching step in S5: the first step is as follows: firstly, an installer needs to pop out an ink line from a lowered central position on a lower beam seat, and after primary measurement is carried out, a temporarily fixed bridge supporting seat is placed according to a position point where the ink line needs to be positioned;
the second step is that: according to the position of the temporary bridge supporting seat, the erected bridge needs to be subjected to transient assembly control, and meanwhile, the bridge can be in the direction along the direction under the condition that the bridge is displaced, so that further treatment needs to be carried out by personnel;
firstly, pushing displacement is carried out through a corresponding structure, and then the bridge is further pushed and displaced by utilizing the structure of the end face, so that the pushing structure of the bridge is pushed in a relatively expanded manner;
the main structure is as follows: the bridge erecting machine is used for pushing the bridge after the bridge is erected.
7. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the branching step in S6: the first step is as follows: firstly, the personnel need to carry out the handling of putting down the roof beam that falls of pushing away, the user needs to start the dolly, the roof beam structure that the combination that places the dolly below is assembled, and the material after the equipment is lifted by the equipment again, hoist and mount and in the hoisting process, through utilizing structural push effect down, with the bridge through doing the propelling movement with structural bridge frame and erect, and with the position of striding before the structure of roof beam transportation, the sideslip bridging machine, transport the roof beam to the top of waiting to erect the roof beam support, support through the atress of erecting the roof beam support down, do that central point with it and put down, detect the straightness that hangs down of roof beam body structure through measuring the suspension wire method between the roof beam body, can erect once more after qualified.
8. The bridge combination beam erection hoisting construction method according to claim 1, characterized in that: according to the corresponding branch enumerated in S7: the first step is as follows: after the bridge erection of the area is completed, the bridge is checked to confirm that no fault exists, the supporting legs at the middle end and the rear end are jacked up, then the box is controlled to be moved backwards and is converted into the longitudinal direction, the falling of the supporting legs at the middle top and the rear top is ensured, the walking box is made to fall onto the longitudinal rail, the two small parking spaces are lifted to move backwards, then the front supporting legs are folded to continuously detach the rail in the front direction, and the walking box is transferred to the rear direction.
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| CN202111597970.0A CN114319116A (en) | 2021-12-24 | 2021-12-24 | Bridge combination beam erection and hoisting construction method |
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| CN202111597970.0A CN114319116A (en) | 2021-12-24 | 2021-12-24 | Bridge combination beam erection and hoisting construction method |
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