CN114263115A - Bridge deck construction device and method - Google Patents
Bridge deck construction device and method Download PDFInfo
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- CN114263115A CN114263115A CN202111578426.1A CN202111578426A CN114263115A CN 114263115 A CN114263115 A CN 114263115A CN 202111578426 A CN202111578426 A CN 202111578426A CN 114263115 A CN114263115 A CN 114263115A
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Abstract
The present disclosure relates to a bridge deck construction device and a method, wherein the bridge deck construction device comprises a bridge deck crane, a pouring platform, a first suspension bracket and a second suspension bracket; the bridge floor crane is used for hoisting the steel box girder section, the pouring platform provides support for the pouring construction of the concrete section, the bridge floor crane is connected with two ends of the pouring platform through a detachable first suspension bracket and a second suspension bracket hinged with the pouring platform, and two ends of the pouring platform are respectively positioned below the concrete section of the constructed section and the concrete section of the section to be constructed; when the steel box girder section is hoisted, the first suspension bracket is detached, the pouring platform is rotated to the position below the constructed concrete section to give way for the bridge deck crane, after the steel box girder section is hoisted, the rotating pouring platform returns to the position where the lower end of the steel box girder section is parallel, and the first suspension bracket is installed to fix the pouring platform. The problem that need change device and equipment repeatedly in the construction of bridge steel-concrete combined section has been solved to this scheme, has improved the efficiency of construction, has reduced the construction degree of difficulty.
Description
Technical Field
The disclosure relates to the technical field of bridge cantilever irrigation construction and cantilever splicing construction, in particular to a bridge deck construction device and method.
Background
The bridge is divided according to structural systems and comprises four basic systems, namely a beam bridge, an arch bridge, a rigid bridge, a cable bearing bridge (namely a suspension bridge and a cable-stayed bridge) and the like. Part of the cable-stayed bridge is a bridge structure between the cable-stayed bridge and the beam bridge, and has the structural characteristics of rigidity and flexibility. The cable tower has the characteristics of a short cable tower, a main beam with high rigidity, a small inclined cable inclination angle, a concentrated arrangement of inclined cables and the like, and shows good mechanical properties. Compared with a continuous beam, the method has the advantages of providing larger spanning capacity, effectively controlling later deformation and the like; compared with the conventional cable-stayed bridge, the cable-stayed bridge mainly has the advantages of engineering quantity saving, large structural rigidity, short construction period and the like, and due to the excellent structural performance and good economic indexes of part of cable-stayed bridges, the development is very rapid at home and abroad in recent years.
Along with the increase of bridge span, the concrete girder that partly cable-stayed bridge adopts alone can be because the effect of dead weight, and economic nature can be discounted greatly. In order to obtain larger crossing capacity and economy, the main beam can adopt a prestressed concrete-steel box mixed beam. The prestressed concrete box girder is adopted near the main girder tower pier, the steel box girder is adopted near the midspan, the dead weight of the main girder can be reduced, and the spanning capability is increased.
In the steel-concrete combined section of the cable-stayed bridge, a main beam consists of a concrete box girder and a steel box girder. When the bridge does not have navigation conditions, construction cannot be carried out by a method of combining floating transportation and suspension splicing, and construction needs to be carried out in a mode of combining suspension and cantilever pouring; the construction function of a mechanical hanging basket is adopted during the construction of the concrete section, and the function of a construction machine bridge deck crane is adopted during the construction of the steel section. The steel-concrete combined section has a complex internal structure, shear keys, longitudinal prestressed cables, shear nails and the like are distributed in the steel-concrete combined section, the working space of personnel and equipment is limited, a plurality of pieces of equipment are required to be combined for pouring concrete and suspending the steel-concrete combined section, and the construction difficulty coefficient is large.
Disclosure of Invention
In order to solve the above technical problem or at least partially solve the above technical problem, the present disclosure provides a bridge deck construction apparatus and method.
The invention provides a bridge deck construction device which comprises a bridge deck crane, a pouring platform, a first suspension bracket and a second suspension bracket, wherein the bridge deck crane is movably arranged above a constructed concrete section of a bridge deck and used for hoisting a steel box girder section; one end of the pouring platform is arranged below the constructed concrete section, and the other end of the pouring platform extends forwards along the concrete section to be constructed of the bridge deck; the first suspension support and the second suspension support are connected between the bridge deck crane and the pouring platform, the first suspension support is detachably connected with the bridge deck crane, the second suspension support is hinged to the pouring platform, the first suspension support is used for being separated from the bridge deck crane when the bridge deck crane lifts, and the pouring platform rotates to enable the bridge deck crane to give way when the first suspension support is separated from the bridge deck crane.
Optionally, the upper end of the first suspension bracket is detachably connected with the bridge deck crane, and the lower end of the first suspension bracket is connected with the part of the pouring platform below the concrete section to be constructed; the upper end of the second suspension bracket is connected with the bridge deck crane, and the lower end of the second suspension bracket is hinged with the part of the pouring platform below the constructed concrete section; and one end of the pouring platform, which is connected with the first suspension bracket, rotates to the position below the constructed concrete section when the first suspension bracket is separated from the bridge deck crane.
Optionally, the pouring platform includes a platform body and connecting portions extending outward along two sides of the platform body, and the connecting portions are used for being connected with the first suspension bracket and the second suspension bracket.
Optionally, be equipped with first transverse connection pole and second transverse connection pole on the bridge floor crane, first transverse connection pole with second transverse connection pole all along with bridge floor crane moving direction vertically direction sets up, wherein, the both ends of first transverse connection pole be used for respectively with the upper end that the support was suspended in midair in the first, the both ends of second transverse connection pole be used for respectively with the upper end that the support was suspended in midair in the second is connected.
Optionally, the bridge floor loop wheel machine includes loop wheel machine body, promotes jack, winding mechanism and steel strand wires, the mobilizable setting of loop wheel machine body is on the concrete section of having under construction, promote the jack with winding mechanism all sets up on the loop wheel machine body, the one end of steel strand wires is convoluteed on the winding mechanism, the other end process promote behind the jack with treat hoist and mount the steel box girder section is connected, promote the jack and be used for promoting the steel box girder section.
Optionally, a cross beam, a first oil cylinder and two oil cylinders are arranged on the crane body, the cross beam is movably arranged on the crane body, the lifting jack is movably arranged on the cross beam, and the first oil cylinder is arranged along the length direction of the cross beam and connected with the lifting jack and used for driving the lifting jack to move along the transverse direction; the second oil cylinder is arranged along the moving direction of the crane body, connected with the cross beam and used for driving the cross beam to move along the moving direction of the crane body.
Optionally, the present disclosure further provides a bridge deck construction method, including:
the pouring platform is suspended below the bridge deck crane by adopting a first suspension bracket and a second suspension bracket, wherein one end of the pouring platform is positioned below the constructed concrete section, and the other end of the pouring platform extends forwards along the concrete section to be constructed so as to provide support for the construction of the concrete section to be constructed;
constructing a concrete section to be constructed on the pouring platform;
removing the first suspension bracket to enable the pouring platform to rotate around the second suspension bracket to the position below the constructed concrete section to give way for the bridge deck crane;
hoisting the steel box girder section by using a bridge deck crane, and aligning the steel box girder section;
rotating the pouring platform to a position parallel to the lower end of the steel box girder section, and installing a first suspension bracket between the pouring platform and the bridge deck crane to fix the pouring platform;
and constructing the next section of concrete to be cast on the casting platform.
Optionally, removing the first suspension bracket to enable the pouring platform to rotate around the second suspension bracket to the position below the constructed concrete section is to give way for the bridge deck crane, and the bridge deck crane further includes: and removing the outer formwork of the constructed concrete section to be constructed and moving the outer formwork to a non-construction area by adopting a bridge deck crane.
Optionally, the rotating the casting platform to a position parallel to the lower end of the steel box girder segment, and before the installing a first suspension bracket between the casting platform and the bridge deck crane to fix the casting platform, the method further includes: and (4) removing the connection between the bridge deck crane and the steel box girder section, and performing construction yielding on the pouring platform.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
according to the bridge floor construction device provided by the embodiment of the disclosure, a bridge floor crane is arranged above a constructed concrete section of a bridge floor and used for hoisting a steel box girder section; the bridge floor has been constructed concrete section below and is provided with the one end and the second of pouring platform and suspend the support articulated in midair, and the second suspends the other end of support in midair and connects on the bridge floor loop wheel machine, and the other end of pouring platform stretches out forward along the concrete section of treating of bridge floor, suspends the support in midair through the detachable first and is connected with the bridge floor loop wheel machine, when the bridge floor loop wheel machine lifted by crane the steel case roof beam, and first support in midair can break away from with the bridge floor loop wheel machine, and the pouring platform rotates around the hinged end and dodges out the construction space for the bridge floor loop wheel machine. In addition, the bridge deck construction device suspends the pouring platform below the bridge deck crane through the first suspension bracket and the second suspension bracket, and the construction of a concrete section can be carried out on the pouring platform; when the steel box girder section is hoisted for construction, the first suspension bracket is dismantled to enable the pouring platform to rotate to the position below the constructed concrete section around the second suspension bracket, the steel box girder section is hoisted by the bridge deck crane to move forward, after the bridge deck crane finishes aligning the steel box girder section, the pouring platform is rotated to the position parallel to the lower end of the steel box girder section, and the first suspension bracket is installed to connect the pouring platform with the bridge deck crane for the next section of concrete pouring construction. Therefore, the technical scheme that this disclosure provides can be after concrete section construction when bridge steel and concrete joint section construction, position through the adjustment platform of pouring lets for bridge floor hoist and mount steel box girder construction, the construction that has realized using one set of construction equipment can carry out two kinds of construction sections of concrete section and steel box girder section, the problem that steel and concrete joint section needs many sets of device alternate construction in the past has been overcome, the requirement to equipment operation space is littleer, time cost and the human cost in the bridge work progress have also been reduced when reducing construction equipment manufacturing cost.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a front view of a deck construction apparatus according to an embodiment of the present disclosure;
FIG. 2 is a side view of a deck construction apparatus according to an embodiment of the present disclosure;
FIG. 3 is a top view of a deck construction apparatus according to an embodiment of the present disclosure;
FIG. 4 is an isometric view of a deck construction device according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of hoisting when the bridge deck is closed according to the embodiment of the present disclosure;
fig. 6 is a schematic flow chart of a bridge deck construction method provided by the embodiment of the disclosure.
Wherein, 1, a bridge deck crane; 101. a crane body; 1011. a cross beam; 1012. a first cylinder; 1013. a second cylinder; 102. lifting the jack; 103. a winding mechanism; 104. steel strand wires; 105. a spreader; 201. a first suspension bracket; 202. a second suspension bracket; 3. pouring a platform; 301. a platform body; 302. a connecting portion; 401. a first transverse connecting rod; 402. a second transverse connecting rod; 5. a rear anchor mechanism; 6. an outer template; 7. a constructed concrete section; 8. a steel box girder section.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Referring to fig. 1 to 5, a bridge deck construction apparatus according to some embodiments of the present invention includes a bridge deck crane 1, a casting platform 3, a first suspension bracket 201 and a second suspension bracket 202, wherein the bridge deck crane 1 is movably installed above a constructed concrete section 7 of a bridge deck for hoisting a steel box girder section; one end of the pouring platform 3 is arranged below the constructed concrete section 7, and the other end of the pouring platform extends forwards along the concrete section to be constructed of the bridge deck; the first suspension bracket 201 and the second suspension bracket 201 are connected between the bridge deck crane 1 and the pouring platform 3, the first suspension bracket 201 is detachably connected with the bridge deck crane 1, the second suspension bracket 202 is hinged with the pouring platform 3, the first suspension bracket 201 is used for being separated from the bridge deck crane 1 when the bridge deck crane 1 is lifted, and the pouring platform 3 rotates to give way to the bridge deck crane 1 when the first suspension bracket 201 is separated from the bridge deck crane 1.
When the bridge floor construction device is used specifically, the bridge floor construction device can be used for reference scenes such as reinforced concrete transition section construction, standard section construction and closure section construction. When the steel-concrete combined section is constructed, the pouring platform 3 is firstly suspended at the construction position below the bridge deck crane 1 through the first suspension bracket 201 and the second suspension bracket 201, an external template which can be used for pouring a construction concrete section is arranged on the pouring platform, after the concrete section is stably installed, the external formwork can be disassembled, the first suspension bracket 201 is disconnected with the bridge deck crane 1, the second suspension bracket 202 is connected with the bridge deck crane 1 and hinged with the pouring platform 3, at the moment, the pouring platform 3 can rotate by taking the hinged end as a shaft under the influence of self gravity and the pulling force of the second suspension bracket 202, so that one end of the pouring platform 3 originally positioned at the bridge construction position falls, the construction position is set aside, and the bridge deck crane 1 has enough space to hoist the steel box girder section, and after the construction of the steel box girder segment is finished, the first suspension bracket 201 is installed again to connect the bridge deck crane 1 and the pouring platform 3.
The position of the pouring platform 3 is adjusted, so that the construction of the bridge deck crane 1 and the construction of the pouring platform 3 are not affected. The embodiment has concrete section construction function and 8 sections of construction functions of steel box girder simultaneously, can satisfy the special operating mode construction of steel-concrete bridge, has solved bridge mixed section construction and has needed many sets of devices, and must be according to the problem that the construction mode frequently changed in turn.
Further, in some embodiments, the upper end of the first suspension bracket 201 is detachably connected to the bridge deck crane 1, and the lower end is connected to the portion of the casting platform 3 below the concrete section to be constructed; the upper end of the second suspension bracket 202 is connected with the bridge deck crane, and the lower end of the second suspension bracket is hinged with the part of the pouring platform 3 below the constructed concrete section 7; and one end of the pouring platform 3 connected with the first suspension bracket 201 rotates to the lower part of the constructed concrete section 7 when the first suspension bracket 201 is separated from the bridge deck crane 1, so that a path for the bridge deck crane 1 to lift the steel box girder section is avoided, and the construction for the bridge deck crane 1 to lift the steel box girder section 8 is realized.
In other embodiments, the casting platform 3 comprises a platform body 301 and connecting parts 302 extending outwards from two sides of the platform body, the connecting parts 302 are used for connecting with the first suspension brackets 201 and the second suspension brackets 202, and the first suspension brackets 201 and the second suspension brackets 202 bear the self weight of the casting platform 3 and the weight of a construction section and an outer formwork 6 which may be arranged on the casting platform 3 during construction and are suspended on the bridge deck crane 1.
Further, in some embodiments, a first transverse connecting rod 401 and a second transverse connecting rod 402 are disposed on the bridge deck crane 1, and both the first transverse connecting rod 401 and the second transverse connecting rod 402 are disposed along a direction perpendicular to a moving direction of the bridge deck crane 1, wherein both ends of the first transverse connecting rod 401 are respectively used for being connected with an upper end of the first suspension bracket 201, and both ends of the second transverse connecting rod 402 are respectively used for being connected with an upper end of the second suspension bracket 202, so that the installation of the casting platform 3 parallel to the bridge ground is completed, and the casting construction is performed above the casting platform 3 so that the first transverse connecting rod 401 and the second transverse connecting rod 402 are important stress parts and are located on one side of the bridge deck crane 1 in the bridge construction direction.
In other embodiments, the bridge deck crane 1 comprises a crane body 101, a lifting jack 102, a winding mechanism 103 and a steel strand 104, wherein the crane body 101 is movably arranged on the constructed concrete section 7, the lifting jack 102 and the winding mechanism 103 are both arranged on the crane body 101, one end of the steel strand 104 is wound on the winding mechanism 103, the other end of the steel strand is connected with a steel box girder section to be hoisted after passing through the lifting jack 102, and the lifting jack 102 is used for lifting the steel box girder section; the lifting jack is connected with the lifting appliance 105 through the bundled steel strand wires 104, the lifting appliance 105 is provided with lifting lugs on the lower portion, the lifting lugs can be used for being connected with the lifting lugs of the steel box girder section 8, vertical power can be continuously provided for lifting the steel box girder section 8, meanwhile, the lifting jack has a self-locking function, and the winding mechanism 103 can play roles of positioning, guiding and protecting the bundled steel strand wires 104, so that the smooth and easy lifting of the steel box girder section and the safety of construction operation are guaranteed.
In still other embodiments, referring to fig. 4, a cross beam 1011, a first oil cylinder 1012 and two oil cylinders 1013 are provided on the crane body 101, the cross beam 1011 is movably provided on the crane body 101, the lifting jack 102 is movably provided on the cross beam 1011, the first oil cylinder 1012 is provided along the length direction of the cross beam 1011 and connected to the lifting jack 102 for driving the lifting jack 102 to move in the transverse direction; second hydro-cylinder 1013 sets up and is connected with crossbeam 1011 along the moving direction of loop wheel machine body 101 for drive crossbeam 1011 removes along the moving direction with loop wheel machine body 101, and horizontal, the longitudinal movement that promote jack 102 can follow the crossbeam can drive steel box girder segment 8, finely tunes the position of steel box girder segment 8, guarantees the accurate counterpoint of steel box girder segment 8 and constructed section at the in-process of hoist and mount steel box girder segment 8.
Further, as can be seen from fig. 2 and 4, in some embodiments, the deck construction device further comprises a rear anchor mechanism 5, which is arranged at the rear of the deck crane 1, for preventing the front of the deck crane 1 from tipping. When the concrete section pouring construction is carried out, the first transverse connecting rod 401 and the second transverse connecting rod 402 are used for suspending the pouring platform 3, the concrete section and the outer formwork 6; and when the steel box girder section 8 is hoisted, the cross beam 1011 for installing the hoisting jack is positioned at the front part of the bridge deck crane 1, so that the load at the front part of the bridge deck crane 1 is extremely large during the bridge deck construction, the overturning instability of the bridge deck crane 1 is easy to occur, the construction safety is seriously influenced, and the rear anchor mechanism 5 is arranged to fix the rear part of the bridge deck crane on the finished section of the bridge deck, so that the counter force of the bridge deck crane 1 during the work can be born.
In some embodiments of the present disclosure, as shown in fig. 6, there is further provided a bridge deck construction method, including
Step S01, the first suspension bracket 201 and the second suspension bracket 202 are adopted to suspend the pouring platform 3 below the bridge deck crane 1, wherein one end of the pouring platform 3 is positioned below the constructed concrete section 7, and the other end of the pouring platform extends forwards along the concrete section to be constructed, so as to provide support for the construction of the concrete section to be constructed;
step S02, constructing a concrete section to be constructed on the pouring platform 3;
step S03, removing the first suspension bracket 201 to enable the pouring platform to rotate around the second suspension bracket 202 to the position below the constructed concrete section 7 to give way for the bridge deck crane 1;
step S04, hoisting the steel box girder segment 8 by using the bridge deck crane 1, and aligning the steel box girder segment 8;
step S05, rotating the pouring platform 3 to a position parallel to the lower end of the steel box girder section 8, and installing a first suspension bracket 201 between the pouring platform 3 and the bridge deck crane 1 to fix the pouring platform 3;
and step S06, constructing the next section of concrete to be cast on the casting platform 3.
In some embodiments where the load on the casting platform 3 is extremely high, a detachable middle suspension bracket may be provided between the first 201 and second 202 suspension brackets; correspondingly, between the first transverse connecting rod 401 and the second transverse connecting rod 402, a middle transverse connecting rod is also needed; the middle suspension bracket connects the middle of the connecting portion 302 and the middle transverse connecting rod of the bridge deck crane 1, and the middle suspension bracket and the first suspension bracket 201 are maintained in the same disassembly or connection state in the alternate construction process of the concrete section and the steel box girder section 8.
In other embodiments, removing the first suspension bracket 201 to rotate the casting platform 3 around the second suspension bracket 202 to below the constructed concrete section 7 to give way to the deck crane 1 further comprises: and removing the outer formwork 6 of the constructed concrete section to be constructed and moving the outer formwork to a non-construction area by using the bridge crane 1.
Further, in some embodiments, rotating the casting platform 3 to a position parallel to the lower end of the steel box girder segment 8 further includes, before installing the first suspension bracket 201 between the casting platform 3 and the bridge deck crane 1 to fix the casting platform 3: the connection between the bridge deck crane 1 and the 8 sections of the steel box girder is released, and the construction on the pouring platform 3 is avoided; in some particular embodiments, after the lifting jack 102 has lifted the steel box girder segment 8 into precise alignment with the constructed segment of the bridge, the first suspension bracket 201 may be installed, raising the casting platform, and providing bottom support for installation of the steel box girder segment 8.
The following relates to a preferred embodiment, and the scheme related to the embodiment is explained as follows:
the bridge deck construction device can be used for steel-concrete transition section construction, standard section construction and closure section construction of bridges, and is shown in figure 5. When the reinforced concrete combination section is constructed, the concrete combination section is poured firstly, after the pouring is finished, the outer template 6 is detached, and the pouring platform 3 rotates to the lower part of the bridge for standby. And operating the lifting jack 102 to hoist the steel box girder section 8, pouring the platform 3 to the lower part of the steel box girder section 8 after the alignment of the steel box girder section 8 is completed, and installing a first suspension bracket 201. At this time, the vertical lifting force is transferred from the lifting jack 102 onto the first suspension bracket 201. And then, constructing a reinforced concrete joint section, and connecting through shear nails in the steel box girder sections. And finally, performing subsequent construction of the standard sections and the closure sections. The construction method simplifies the construction process of the steel-concrete cable-stayed bridge, accelerates the engineering progress, reduces the equipment and manpower input, and improves the construction efficiency and the economic benefit.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. 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 disclosure. Thus, the present disclosure 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.
Claims (10)
1. The bridge floor construction device is characterized by comprising a bridge floor crane (1), a pouring platform (3), a first suspension bracket (201) and a second suspension bracket (202), wherein the bridge floor crane (1) is movably arranged above a constructed concrete section (7) of a bridge floor and is used for hoisting a steel box girder section (8); one end of the pouring platform (3) is arranged below the constructed concrete section (7), and the other end of the pouring platform extends forwards along the concrete section to be constructed of the bridge deck; first support (201) and second are suspended in midair the support (202) and are connected bridge floor crane (1) with pour between platform (3), first support (201) and be connected with bridge floor crane (1) can be dismantled, second suspend support (202) and pour platform (3) articulated, first support (201) that suspends is used for when bridge floor crane (1) lifts by crane with bridge floor crane (1) breaks away from, pour platform (3) be in first support (201) that suspends with rotate when bridge floor crane (1) breaks away from and do bridge floor crane (1) abdicate.
2. Bridge deck construction installation according to claim 1, wherein the first suspension bracket (201) is removably connected at its upper end to the deck crane (1) and at its lower end to the portion of the casting platform (3) below the section of concrete to be constructed; the upper end of the second suspension bracket (202) is connected with the bridge deck crane (1), and the lower end of the second suspension bracket is hinged with the part of the pouring platform (3) below the constructed concrete section (7); and one end of the pouring platform (3) connected with the first suspension bracket (201) rotates to the position below the constructed concrete section (7) when the first suspension bracket (201) is separated from the bridge deck crane (1).
3. Bridge deck construction arrangement according to claim 1, wherein the casting platform (3) comprises a platform body (301) and connection parts (302) extending outwards along both sides of the platform body (301), said connection parts (302) being adapted to be connected to the first suspension bracket (201) and the second suspension bracket (202).
4. Bridge deck construction unit according to claim 1, characterised in that said deck crane (1) is provided with a first transverse connecting rod (401) and a second transverse connecting rod (401), said first transverse connecting rod (401) and said second transverse connecting rod (401) being arranged in a direction perpendicular to the direction of movement of said deck crane (1), wherein the two ends of the first transverse connecting rod (401) are respectively intended to be connected to the upper end of said first suspension bracket (201) and the two ends of said second transverse connecting rod (401) are respectively intended to be connected to the upper end of said second suspension bracket (202).
5. Bridge deck construction unit according to any of claims 1-4, characterised in that the deck crane (1) comprises a crane body (101), a lifting jack (102), a reeling mechanism (103) and steel strands (104), the crane body (101) being movably arranged on the constructed concrete section (7), the lifting jack (102) and the reeling mechanism (103) being arranged on the crane body (101), one end of the steel strands (104) being wound around the reeling mechanism (103) and the other end being connected to the steel box girder section (8) to be hoisted after passing the lifting jack (102), the lifting jack (102) being adapted to lift the steel box girder section (8).
6. The bridge deck construction device according to claim 5, wherein a cross beam (1011), a first oil cylinder (1012) and a second oil cylinder (1013) are arranged on the crane body (101), the cross beam (1011) is movably arranged on the crane body (101), the lifting jack (102) is movably arranged on the cross beam (1011), and the first oil cylinder (1012) is arranged along the length direction of the cross beam (1011) and connected with the lifting jack (102) and used for driving the lifting jack (102) to move transversely; the second oil cylinder (1013) is arranged along the moving direction of the crane body (101) and connected with the cross beam (1011) and is used for driving the cross beam (1011) to move along the moving direction of the crane body (101).
7. Bridge deck construction arrangement according to claim 1, further comprising a rear anchor mechanism arranged at the rear of the deck crane (1) for preventing the front of the deck crane (1) from tipping.
8. A bridge deck construction method is characterized by comprising
A first suspension bracket (201) and a second suspension bracket (202) are adopted to suspend a pouring platform (3) below a bridge deck crane (1), wherein one end of the pouring platform (3) is positioned below a constructed concrete section (7), and the other end of the pouring platform extends forwards along the concrete section to be constructed, so that support is provided for the construction of the concrete section to be constructed;
constructing a concrete section to be constructed on the pouring platform (3);
dismantling the first suspension bracket (201) to enable the pouring platform (3) to rotate around the second suspension bracket (202) to the position below the constructed concrete section (7) to give way for the bridge deck crane (1);
hoisting a steel box girder section (8) by using a bridge deck crane (1), and aligning the steel box girder section (8);
rotating the pouring platform (3) to a position parallel to the lower end of the steel box girder section (8), and installing a first suspension bracket (201) between the pouring platform (3) and the bridge deck crane (1) to fix the pouring platform (3);
and (4) carrying out construction of the next section of concrete to be poured on the pouring platform (3).
9. The method of claim 8, wherein said removing the first suspension bracket (201) to rotate the casting platform (3) about the second suspension bracket (202) to below the constructed concrete section (7) to give way to the deck crane (1) further comprises: and removing the outer formwork (6) of the constructed concrete section to be constructed and moving the outer formwork to a non-construction area by adopting a bridge deck crane (1).
10. Method according to claim 8, wherein rotating the casting platform (3) to a position parallel to the lower end of the steel box girder section (8) further comprises, before mounting a first suspension bracket (201) between the casting platform (3) and the deck crane (1) to fix the casting platform (3): and (3) removing the connection between the bridge deck crane (1) and the steel box girder section (8), and performing construction yielding on the pouring platform (3).
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| CN202111578426.1A CN114263115B (en) | 2021-12-22 | 2021-12-22 | Bridge deck construction device and method |
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| CN202111578426.1A CN114263115B (en) | 2021-12-22 | 2021-12-22 | Bridge deck construction device and method |
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| CN114263115B CN114263115B (en) | 2023-07-25 |
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Citations (8)
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| CN110904844A (en) * | 2019-11-29 | 2020-03-24 | 中铁第四勘察设计院集团有限公司 | Construction device and construction method suitable for integral hoisting of suspended cast beam steel bar segments |
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| US3985480A (en) * | 1972-08-18 | 1976-10-12 | Dyckerhoff & Widmann Ag | Apparatus for the sectional cantilever construction of bridge girder systems |
| CN104727226A (en) * | 2015-02-15 | 2015-06-24 | 中交第一公路工程局有限公司 | Construction method for steel-concrete composite girder |
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| CN109972517A (en) * | 2017-12-27 | 2019-07-05 | 中交第二航务工程局有限公司 | A kind of construction method of steel reinforced concrete bondbeam cable-stayed bridge main-beam |
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| CN110396931A (en) * | 2019-07-16 | 2019-11-01 | 中交第二公路工程局有限公司 | A kind of excessively cable-styled erection crane of center double plane cable stayed bridge and its construction method |
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| CN114263115B (en) | 2023-07-25 |
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