CN112252194A - Bridge lifting device, transformation system and transformation construction method - Google Patents
Bridge lifting device, transformation system and transformation construction method Download PDFInfo
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- CN112252194A CN112252194A CN202011195982.6A CN202011195982A CN112252194A CN 112252194 A CN112252194 A CN 112252194A CN 202011195982 A CN202011195982 A CN 202011195982A CN 112252194 A CN112252194 A CN 112252194A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention relates to the technical field of bridge reinforcement, in particular to a bridge lifting device, a transformation system and a transformation construction method. The method includes the following step S1: lifting the bridge section to be lifted by utilizing lifting units arranged at the lifting ends of the two lifting beam mechanisms and temporarily supporting the bridge section; s2: moving the two lifting beam mechanisms to two sides of the next bridge section to be lifted until the lifting and temporary supporting of all the bridge sections are finished; s3: placing the two half-frame bodies on the ground at two sides of the lifted bridge section, and lifting the device to the position above the two half-frame bodies; s4: the lifting device lifts the two groups of half frame bodies to a set height and then moves to the installation position of the construction hanger, so that the two groups of half frame bodies are spliced and then sleeved on the pier; s5: and (4) releasing the connection between the lifting device and the half frame body, and repeating the steps S3-S4 to install the next construction hanging frame. The problem of among the prior art pier connect high to adopt hydraulic jack, the jacking stroke is limited, need to adopt the steel cushion of special design, and the efficiency of construction is low can be solved.
Description
Technical Field
The invention relates to the technical field of bridge reinforcement, in particular to a bridge lifting device, a transformation system and a transformation construction method.
Background
The bridge pier connection construction is a construction method which is efficient and economical in bridge reconstruction construction, is common in urban overpass reconstruction, and mainly aims at adjusting the elevation of an existing bridge.
In the existing construction method, before construction, a chassis structure system is required to be arranged on an existing pier and is mainly used for bearing jacking load and transmitting the load to a lower pier or a foundation structure; a tray structure system is arranged and is mainly used for supporting the upper part jacked structure. Placing hydraulic jack between chassis structure and the tray structure, after will having the pier cutting, adopting hydraulic jack jacking to go up some piers, two parts pier about the jacking is planted again or ligature reinforcing bar connection after targetting in place, then concreting forms wholly, finally realizes raising the purpose of bridge floor elevation.
However, in the existing method, the pier connection needs to be provided with a chassis structure system, a tray structure system and other force transmission structures, for the reconstruction of the pier with larger jacking weight, the chassis needs to be arranged on a bearing platform or the ground, and the method is not suitable for bridges crossing canyons, important flood discharge channels, channels and the like; when the structures such as the column beam and the steel hoop are adopted as the chassis structure, the original structure can be damaged by arranging anchor points on the pier body, and adverse effects can be generated on the reconstruction of an old bridge; the hydraulic jack is adopted for the bridge pier to be heightened, the jacking stroke is limited, a specially designed steel cushion block needs to be adopted for the bridge with the larger jacking height, and the hydraulic jack is used for lifting the cushion of the jack and the bridge pier, and the construction efficiency is low. In the jacking process, the jacks are strictly controlled to be synchronous, so that the instability and damage of the pier structure are avoided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a bridge lifting device, a transformation system and a transformation construction method, which can solve the problems that in the prior art, a hydraulic jack is adopted for connecting a bridge pier to be high, the jacking stroke is limited, a specially designed steel cushion block is required, and the construction efficiency is low.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
in one aspect, the present invention provides a bridge lifting device, comprising:
two lifting beam mechanisms which are respectively arranged at two sides of the bridge section to be lifted, each lifting beam mechanism comprises,
a lifting frame for being movably arranged at one side of a bridge section to be lifted, the lifting frame comprising a lifting end for being arranged above one end of the bridge section to be lifted;
and the hoisting units are respectively arranged on the hoisting ends of the hoisting frame and are used for hoisting the bridge section to be hoisted.
On the basis of the above technical solution, the hoisting unit includes:
a continuous jack provided on a lifting end of the lifting frame;
and the steel strand is arranged in the continuous jack in a penetrating manner and is connected with one end of the bridge section to be lifted.
On the basis of the technical scheme, the lifting frame further comprises a counterweight end, and a counterweight block is arranged on the counterweight end.
On the basis of the technical scheme, the bridge support structure further comprises at least two groups of support structures which are arranged on the bridge pier to support the lifted bridge sections.
In another aspect, the present invention provides a bridge reconstruction system, comprising:
two handle mechanisms, it is used for locating respectively treats the bridge segment both sides that promote, and every handle mechanism all includes:
-lifting frames for being movably arranged on one side of a bridge segment to be lifted, the lifting frames each comprising a lifting end for being arranged above one end of a bridge segment to be lifted;
-hoisting units, provided on the hoisting ends of the hoisting frame, respectively, for hoisting a bridge segment to be hoisted;
each construction hanging bracket comprises two half frame bodies which can be spliced and disassembled, and the splicing side of each half frame body is provided with a groove;
and the lifting device is used for movably arranging on the lifted bridge section, lifting the two split half frame bodies and enabling the two split half frame bodies to be sleeved on the bridge pier after being spliced.
On the basis of the above technical solution, the lifting device includes:
the walking mechanism comprises a transverse hanging beam, the transverse hanging beam is movably arranged on the lifted bridge section and comprises a hoisting end, two ends of the hoisting end extend out of the bridge section, and a track is arranged below the hoisting end;
locate slidable lift by crane the mechanism on the track of lift by crane end below, lift by crane the mechanism and be used for lifting the split half support body, just lift by crane the mechanism and can move in opposite directions on the track of bridge segment both sides, so that two half support body cover after the concatenation is established on the pier.
On the basis of the technical scheme, each group of hoisting mechanisms comprises at least one electric chain hoist, and a chain of the electric chain hoist is used for being connected with one of the semi-application frame bodies to hoist the semi-application frame body.
On the basis of the technical scheme, the walking mechanism further comprises a track flat car which is used for being arranged on a slideway of the lifted bridge section, the transverse hanging beam is arranged on the track flat car, and rail clamping devices are further arranged on two sides of the track flat car and used for fixing the track flat car on the slideway.
On the basis of the technical scheme, each group of the half frame bodies comprises:
the two upper cross beams are arranged at intervals and respectively comprise an upper connecting end;
the upper longitudinal beams are arranged at intervals and connected with the two upper cross beams, and the upper connecting ends extend out of all the upper longitudinal beams;
the two lower cross beams are arranged at intervals, correspondingly arranged below the upper cross beam and respectively comprise lower connecting ends;
the lower longitudinal beams are arranged at intervals and connected with the two lower cross beams, and the lower connecting ends extend out of all the lower longitudinal beams;
at least one vertical post connecting the corresponding upper cross beam and the lower cross beam;
the groove is arranged on one side of the upper connecting end and one side of the lower connecting end and is fixed on the upper cross beam, the upper longitudinal beam, the lower cross beam, the lower longitudinal beam and the stand column through fixing rods.
In addition, the invention provides a bridge reconstruction construction method, which is characterized by comprising the following steps:
s1: lifting the bridge section to be lifted by utilizing lifting units arranged at the lifting ends of the two lifting beam mechanisms and temporarily supporting the bridge section;
s2: moving the two lifting beam mechanisms to two sides of the next bridge section to be lifted, and lifting the next bridge section to be lifted until the lifting and temporary supporting of all the bridge sections are finished;
s3: placing the two half-frames on the ground on both sides of the lifted bridge section, and moving the lifting device to be above the two half-frames on the lifted bridge section;
s4: the lifting device lifts the two groups of half frame bodies to a set height and then moves to the installation position of the construction hanger, so that the two groups of half frame bodies are spliced and then sleeved on the pier;
s5: and (4) releasing the connection between the lifting device and the half frame body, and repeating the steps S3-S4 to install the next construction hanging frame.
Compared with the prior art, the invention has the advantages that: by adopting the system and the method, the existing line can be fully utilized, lower supports such as trestles and supports do not need to be built, a chassis tray structure does not need to be arranged on a pier body, the influence on the existing structure can be reduced to the greatest extent, and the construction process is safe and efficient. The main structure of the half frame body is prefabricated in a factory, assembled on the ground on site, safe and efficient, and the hanger frame is good in integrity, large in rigidity, small in deformation and high in bearing capacity after being folded. The construction hanger adopts an integral suspension assembly technology, the mechanization degree of the whole installation, dismantling and transporting process is high, the construction efficiency is greatly improved, the construction period is also greatly shortened, the construction cost is reduced, and the construction hanger is particularly suitable for the characteristic that the bridge maintenance and reconstruction period is short.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a lifting beam mechanism according to an embodiment of the present invention;
FIG. 2 is a front view of a hoist and construction hanger connection in an embodiment of the present invention;
FIG. 3 is a side view of a lifting device and construction hanger connection in an embodiment of the present invention;
FIG. 4 is a schematic top view of a construction hanger according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of preparation for ground hoisting of a construction hanger according to an embodiment of the present invention;
FIG. 6 is a schematic view of the construction hanger of the present invention being lifted from the ground;
FIG. 7 is a schematic view illustrating the construction hanger moving to a pier according to an embodiment of the present invention;
FIG. 8 is a side view of the construction hoist shown in a disengaged condition in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view of a second set of construction hangers according to an embodiment of the present invention;
fig. 10 is a schematic view of a second set of construction hangers in place according to an embodiment of the invention.
In the figure: 1. a beam lifting mechanism; 11. a hoisting frame; 111. a balancing weight; 112. a traveling trolley; 113. making a mat section steel; 12. a hoisting unit; 121. a continuous jack; 122. steel strand wires; 2. a bridge segment; 3. a support structure; 4. a bridge pier; 5. a lifting device; 51. a running mechanism; 511. transversely hanging the beam; 512. a track; 513. a rail flat car; 52. a hoisting mechanism; 521. an electric chain hoist; 522. a cyclic chain; 6. constructing a hanging bracket; 61. a half frame body; 611. a groove; 612. an upper cross beam; 613. an upper longitudinal beam; 614. a lower cross beam; 615. a lower longitudinal beam; 616. and (4) a column.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all 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 application.
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 1, the present invention provides a bridge lifting device, comprising: the lifting device comprises two lifting beam mechanisms 1, two lifting beam mechanisms and a lifting mechanism, wherein the two lifting beam mechanisms 1 are respectively arranged on two sides of a bridge section 2 to be lifted, each lifting beam mechanism 1 comprises a lifting frame 11 which is movably arranged on one side of the bridge section 2 to be lifted, and each lifting frame 11 comprises a lifting end which is arranged above one end of the bridge section 2 to be lifted; and the hoisting units 12 are respectively arranged on the hoisting ends of the hoisting frames 11 and used for hoisting the bridge sections 2 to be hoisted.
When the bridge lifting device is used, two lifting beam mechanisms 1 are arranged at two sides of a bridge section 2 to be lifted, and the lifting unit 12 arranged at the lifting ends of the two lifting beam mechanisms 1 is used for lifting the bridge section 2 to be lifted and temporarily supporting the same; then, the two lifting beam mechanisms 1 are moved to the two sides of the bridge section 2 to be lifted next, and the bridge section 2 to be lifted next is lifted until the lifting and the temporary supporting of all the bridge sections 2 are completed. By adopting the device, the existing line can be fully utilized, lower supports such as trestles and supports do not need to be built, a chassis tray structure does not need to be arranged on a pier body, the influence on the existing structure can be reduced to the greatest extent, and the construction process is safe and efficient. When having avoided the bridge among the prior art to promote and the pier connects the height, need adopt hydraulic jack, the jacking stroke is limited, need adopt the steel cushion of special design to the great bridge of jacking height for the pad is copied to jack and pier, and the efficiency of construction is low. In addition, the device also need not set up the anchor point at the pier shaft and can destroy original structure, can not produce adverse effect to old bridge transformation.
In the present embodiment, when the bridge segment 2 to be lifted is located between the lifted bridge segment 2 and the non-lifted bridge segment 2, two lifting mechanisms 1 are located on the lifted bridge segment 2 and the non-lifted bridge segment 2 on both sides thereof, respectively. A walking trolley 112 and a lifting pad section steel 113 are arranged below the lifting frame 11, so that the lifting frame 11 can stably move on the bridge section 2.
In some alternative embodiments, the hoisting unit 12 comprises: a continuous jack 121 provided on the lifting end of the lifting frame 11; and the steel strand 122 is arranged in the continuous jack 121 in a penetrating manner and is connected with one end of the bridge section 2 to be lifted.
In this embodiment, the continuous jack 121 and the steel strand 122 provided on the lifting end of the lifting frame 11 of the lifting mechanism 1 lift the bridge segment 2 to be lifted, so that the bridge segment 2 to be lifted can be lifted to a set height at one time, and the lifting construction of the bridge segment can be completed without multiple times of lifting by the jack.
In some alternative embodiments, the lifting frame 11 further comprises a counterweight end, on which a counterweight 111 is provided. In this embodiment, the counterweight end of the lifting frame 11 is provided with the counterweight 111, which can overcome the gravity of the bridge segment when the lifting frame 11 lifts the bridge segment, so that the lifting frame 11 is safer and more stable when lifting the bridge segment.
In some optional embodiments, at least two sets of support structures 3 are also included for supporting the lifted bridge segment 2, provided on the pier 4. In this embodiment, two sets of support structures 3 are respectively provided on the bridge pier to temporarily support the lifted bridge segments 2, and each bridge segment is provided with two sets of bridge segments 2 until all bridge segments 2 are lifted. In this example, an integral landing pad is used as the support structure 3.
As shown in fig. 1 to 3, the present invention further provides a bridge reconstruction system, including: two handle mechanisms 1, it is used for locating respectively and treats 2 both sides of bridge segment section that promote, and every handle mechanism 1 all includes: the lifting frames 11 are movably arranged on one side of the bridge section 2 to be lifted, and each lifting frame 11 comprises a lifting end which is arranged above one end of the bridge section 2 to be lifted; the lifting device also comprises lifting units 12 which are respectively arranged on the lifting ends of the lifting frames 11 and are used for lifting the bridge sections 2 to be lifted; the system also comprises at least two groups of construction hanging brackets 6, each group of construction hanging brackets 6 comprises two spliced and disassembled half frame bodies 61, and the splicing side of each half frame body 61 is provided with a groove 611; the bridge structure is characterized by further comprising a lifting device 5, wherein the lifting device is movably arranged on the lifted bridge section 2, the two split half frame bodies 61 are lifted, and the two split half frame bodies 61 are spliced and then sleeved on the bridge pier 4.
When the bridge reconstruction system is used, two lifting beam mechanisms 1 are arranged on two sides of a bridge section 2 to be lifted, and the lifting unit 12 arranged at the lifting ends of the two lifting beam mechanisms 1 is used for lifting the bridge section 2 to be lifted and temporarily supporting the same; then, the two lifting beam mechanisms 1 are moved to the two sides of the bridge section 2 to be lifted next, and the bridge section 2 to be lifted next is lifted until the lifting and the temporary supporting of all the bridge sections 2 are completed.
Then placing the two half frame bodies 61 on the ground on both sides of the lifted bridge segment 2, and moving the lifting device 5 above the two half frame bodies 61 on the lifted bridge segment 2; the lifting device 5 lifts the two groups of half frame bodies 61 to a set height, and then moves to the installation position of the construction hanger 6, so that the two groups of half frame bodies 61 are spliced and then sleeved on the bridge pier 4; the connection between the lifting device 5 and the half frame body 61 is released, and the next construction hanger 6 is installed by using the lifting device 5.
By adopting the system, the existing line can be fully utilized, lower supports such as trestles and supports do not need to be built, a chassis tray structure does not need to be arranged on a pier body, the influence on the existing structure can be reduced to the greatest extent, and the construction process is safe and efficient. When having avoided the bridge among the prior art to promote and the pier connects the height, need adopt hydraulic jack, the jacking stroke is limited, need adopt the steel cushion of special design to the great bridge of jacking height for the pad is copied to jack and pier, and the efficiency of construction is low. In addition, the device also need not set up the anchor point at the pier shaft and can destroy original structure, can not produce adverse effect to old bridge transformation.
The main structure of the half frame body is prefabricated in a factory, assembled on the ground on site, safe and efficient, and the hanger frame is good in integrity, large in rigidity, small in deformation and high in bearing capacity after being folded. The construction hanger adopts an integral suspension assembly technology, the mechanization degree of the whole installation, dismantling and transporting process is high, the construction efficiency is greatly improved, the construction period is also greatly shortened, the construction cost is reduced, and the construction hanger is particularly suitable for the characteristic that the bridge maintenance and reconstruction period is short.
In some alternative embodiments, the lifting device 5 comprises: the traveling mechanism 51 comprises a transverse hanging beam 511, the transverse hanging beam 511 is used for being movably arranged on the lifted bridge section 2, the transverse hanging beam 511 comprises a hoisting end, two ends of the hoisting end extend out of the bridge section 2, and a track 512 is arranged below the hoisting end; the hoisting mechanism 52 is slidably arranged on the rail 512 below the hoisting end, the hoisting mechanism 52 is used for hoisting the split half frame bodies 61, and the hoisting mechanism 52 can move oppositely on the rails 512 at two sides of the bridge section 2, so that the two half frame bodies 61 are spliced and then sleeved on the bridge pier 4.
This system of reforming transform accomplishes the back at the gallows construction, can remove the back through movably walking quick removal construction gallows of mechanism 51 and hoisting mechanism 52 to the pier stud of next needs construction, demolishs and removes through the quick installation of construction gallows, realizes transporting many times of pier shaft template, can improve the efficiency of construction.
In some alternative embodiments, each set of hoisting mechanisms 52 includes at least one electric chain block 521, and the chain 522 of the electric chain block 521 is used to connect with one half frame body 61 to lift the half frame body 61.
In this embodiment, the transverse hanging beam 511 comprises two parallel beams, and two ends of the beams extend out of the hoisting end of the bridge segment 2, and a rail 512 is provided below each hoisting end, so that two sets of hoisting mechanisms 52 are provided on each side of the bridge segment 2.
In this example, each set of hoisting mechanism 52 includes two electric chain hoists 521, so the half frame bodies 61 on each side are connected by the chain 522 using four electric chain hoists 521 for synchronously hoisting the half frame bodies 61. This makes the entire process of lifting up the half frame body 61 more stable.
In some alternative embodiments, the running gear 51 further comprises a rail trolley 513 for being arranged on a slideway of the lifted bridge section 2, the transverse suspension beams 511 being arranged on the rail trolley 513, and rail clamps being arranged on both sides of the rail trolley 513 for fixing the rail trolley 513 on the slideway.
In this embodiment, the transverse suspension beams 511 are arranged on a rail trolley 513, so that the transverse suspension beams 511 can be moved on the runners on the bridge section 2. In addition, in the present embodiment, the transverse hanging beam 511 includes two parallel cross beams, and two ends of the cross beams extend out of the hoisting ends of the bridge segment 2, and a rail 512 is provided below each hoisting end. Rail clamping devices are arranged on two sides of the rail flat car 513, so that the rail flat car 513 can be fixed on the slide rails when the two split half frame bodies 61 are lifted by the lifting mechanism 52 and moved to the installation position.
In some optional embodiments, each set of half-shelves 61 comprises: the two upper cross beams 612 arranged at intervals respectively comprise upper connecting ends and at least two upper longitudinal beams 613 arranged at intervals, the two upper cross beams 612 are connected, and the upper connecting ends extend out of all the upper longitudinal beams 613; the device also comprises two lower cross beams 614 arranged at intervals, which are correspondingly arranged below the upper cross beam 612 and respectively comprise lower connecting ends; the device also comprises at least two lower longitudinal beams 615 which are arranged at intervals and are connected with the two lower cross beams 614, and the lower connecting ends extend out of all the lower longitudinal beams 615; also included are at least 4 posts 616 connecting the corresponding upper beam 612 and lower beam 614; the groove 611 is provided at one side of the upper and lower connection ends, and is fixed to the upper cross member 612, the upper longitudinal member 613, the lower cross member 614, the lower longitudinal member 615, and the pillar 616 by fixing rods.
In this embodiment, the groove 611 is fixed to the upper cross member 612, the upper longitudinal member 613, the lower cross member 614, the lower longitudinal member 615, and the vertical member 616 by the connecting bracket. And the shape of the groove 611 matches the shape of the pier stud. The upper connecting end of the upper cross beam 612 penetrates through the lower chord of the bridge segment 2, the folded construction hanger 6 is integrally lowered, and the dip wood block is arranged at the position of the upper cross beam 612 corresponding to the lower chord of the bridge segment 2, so that the hanger is stably suspended at the lower chord of the bridge segment 2.
As shown in fig. 1 in combination with fig. 4 to 10, the invention also provides a bridge reconstruction method, which comprises the following steps:
s1: the bridge section 2 to be lifted is lifted and temporarily supported by means of the lifting units 12 arranged at the lifting ends of the two lifting beam devices 1.
In this embodiment, first, two lifting mechanisms 1 are moved to both sides of the bridge section 2 to be lifted, and connected to the bridge section 2 to be lifted using the lifting unit 12.
S2: and moving the two lifting beam mechanisms 1 to two sides of the bridge section 2 to be lifted next, and lifting the bridge section 2 to be lifted next until the lifting and the temporary supporting of all the bridge sections 2 are completed.
S3: the two sets of half-frame bodies 61 are placed on the ground on both sides of the lifted bridge segment 2, and the lifting devices 5 are moved above the two sets of half-frame bodies 61 on the lifted bridge segment 2.
In this embodiment, the half frame bodies 61 are prefabricated in a factory, and the split-bar members are assembled on site after being transported to the site and are symmetrically placed on the ground along the center line of the bridge.
S4: the lifting device 5 lifts the two groups of half frame bodies 61 to a set height, and then moves to the installation position of the construction lifting frame 6, so that the two groups of half frame bodies 61 are spliced and then sleeved on the pier 4.
In this embodiment, the traveling mechanism 51 travels above the construction hanger 6 along the slide way, synchronously lowers the lifting hook, lifts the construction hanger 6 off the ground by a certain height, checks whether the positions of the construction hangers 6 on both sides are symmetrical, checks whether the bottom plate is horizontal, and timely adjusts if there is a deviation. After no error is ensured, the synchronous lifting is carried out to the specified height. And the walking mechanism 51 moves to the installation position of the construction hanger 6, namely the central lines of the two groups of half frame bodies 61 coincide with the central line of the pier, and the rail clamping devices arranged at the two ends of the rail car are opened to fix the rail car 513.
The upper connecting end of the upper beam 612 passes through the interior of the lower chord of the bridge segment 2 to be butted, and the flange plate is pre-tightened by bolts. Constructors go down to the pier tops, pre-tighten the butt flanges of the lower cross beam 614, and finally re-screw the bolts of the butt flanges of the upper cross beam and the lower cross beam to enable the half frame bodies 61 on the two sides to form an integral structure.
S5: and (5) releasing the connection between the lifting device 5 and the half frame body 61, and repeating the steps S3-S4 to install the next construction hanger 6.
In addition, the construction hanger 6 can be transported after being used, the hanger is transported only by moving the traveling mechanism 51 to the position above the transportation hanger, the lifting hooks are arranged, butt bolts of the upper and lower beams of the hanger are removed, and the hanger can be separated after being lifted for a certain height and then transported to other pier tops for installation.
In conclusion, the system and the method can fully utilize the existing line, do not need to set up lower supports such as trestles and supports, and also do not need to arrange a chassis tray structure on the pier body, can furthest reduce the influence on the existing structure, and have safe and efficient construction process. The main structure of the half frame body is prefabricated in a factory, assembled on the ground on site, safe and efficient, and the hanger frame is good in integrity, large in rigidity, small in deformation and high in bearing capacity after being folded. The construction hanger adopts an integral suspension assembly technology, the mechanization degree of the whole installation, dismantling and transporting process is high, the construction efficiency is greatly improved, the construction period is also greatly shortened, the construction cost is reduced, and the construction hanger is particularly suitable for the characteristic that the bridge maintenance and reconstruction period is short.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are 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 above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. 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 application. Thus, the present application 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. A bridge lifting device, comprising:
two lifting beam mechanisms (1) which are respectively arranged at two sides of a bridge section (2) to be lifted, wherein each lifting beam mechanism (1) comprises,
-a lifting frame (11) for being movably arranged at one side of a bridge segment (2) to be lifted, the lifting frame (11) comprising a lifting end for being arranged above one end of the bridge segment (2) to be lifted;
and the hoisting units (12) are respectively arranged on the hoisting ends of the hoisting frame (11) and are used for hoisting the bridge section (2) to be hoisted.
2. A bridge hoisting device according to claim 1, wherein the hoisting unit (12) comprises:
a continuous jack (121) provided on the lifting end of the lifting frame (11);
and the steel strand (122) is arranged in the continuous jack (121) in a penetrating mode and is connected with one end of the bridge section (2) to be lifted.
3. A bridge lifting device according to claim 1, wherein: the lifting frame (11) further comprises a counterweight end, and a counterweight block (111) is arranged on the counterweight end.
4. A bridge lifting device according to claim 1, further comprising at least two sets of support structures (3) for supporting the lifted bridge section (2) on a pier (4).
5. A bridge reconstruction system, comprising:
two handle mechanisms (1), it is used for locating respectively and treats bridge segment (2) both sides that promote, and every handle mechanism (1) all includes:
-lifting frames (11) for being movably arranged on one side of a bridge segment (2) to be lifted, said lifting frames (11) each comprising a lifting end for being arranged above one end of a bridge segment (2) to be lifted;
-hoisting units (12) provided on the hoisting ends of the hoisting frame (11), respectively, for hoisting a bridge segment (2) to be hoisted;
the construction hanging bracket comprises at least two groups of construction hanging brackets (6), wherein each group of construction hanging brackets (6) comprises two semi-frame bodies (61) which can be spliced and disassembled, and the splicing side of each semi-frame body (61) is provided with a groove (611);
and the lifting device (5) is used for movably arranging on the lifted bridge section (2), hoisting the half frame body (61) of the two splits and splicing the half frame body (61) to form a whole, and the half frame body (61) is sleeved on the pier (4).
6. A bridge reconstruction system as claimed in claim 5, characterized in that said lifting means (5) comprise:
the walking mechanism (51) comprises a transverse hanging beam (511), the transverse hanging beam (511) is movably arranged on the lifted bridge section (2), the transverse hanging beam (511) comprises a hanging end, two ends of the hanging end extend out of the bridge section (2), and a track (512) is arranged below the hanging end;
locate slidable lift by crane mechanism (52) on lifting by crane end below track (512), lift by crane mechanism (52) and be used for lifting by crane the split half support body (61), just lift by crane mechanism (52) and can be in the track (512) of bridge segment (2) both sides on the relative motion, so that two overlap after half support body (61) splice and establish on pier (4).
7. A bridge reconstruction system as claimed in claim 6, characterized in that each set of said lifting means (52) comprises at least one electric chain block (521), the chain (522) of said electric chain block (521) being adapted to be connected to one of said half-frames (61) for lifting said half-frame (61).
8. A bridge reconstruction system as claimed in claim 6, characterized in that the running gear (51) further comprises a rail trolley (513) for being placed on a slideway of the lifted bridge section (2), the transverse suspension beams (511) being placed on the rail trolley (513), and that the rail trolley (513) is provided with rail clamps on both sides for fixing the rail trolley (513) on the slideway.
9. A bridge reconstruction system as claimed in claim 5,
each group half support body (61) all includes:
two upper cross beams (612) arranged at intervals and respectively comprising an upper connecting end;
at least two upper longitudinal beams (613) arranged at intervals and connecting the two upper cross beams (612), wherein the upper connecting ends extend out of all the upper longitudinal beams (613);
the two lower cross beams (614) are arranged at intervals, are correspondingly arranged below the upper cross beam (612), and respectively comprise lower connecting ends;
at least two lower longitudinal beams (615) arranged at intervals, wherein the lower longitudinal beams are connected with the two lower cross beams (614), and the lower connecting ends extend out of all the lower longitudinal beams (615);
at least 4 columns (616) connecting corresponding said upper beam (612) and lower beam (614);
the grooves (611) are arranged on one side of the upper connecting end and one side of the lower connecting end and are fixed on the upper cross beam (612), the upper longitudinal beam (613), the lower cross beam (614), the lower longitudinal beam (615) and the upright post (616) through fixing rods.
10. A bridge reconstruction construction method based on the bridge reconstruction system according to claim 5, characterized by comprising the steps of:
s1: lifting the bridge section (2) to be lifted by using a lifting unit (12) arranged at the lifting ends of the two lifting beam mechanisms (1) and temporarily supporting the bridge section;
s2: moving the two lifting beam mechanisms (1) to two sides of the next bridge section (2) to be lifted, and lifting the next bridge section (2) to be lifted until the lifting and temporary supporting of all the bridge sections (2) are completed;
s3: placing two groups of half frame bodies (61) on the ground on two sides of the lifted bridge section (2), and moving a lifting device (5) above the two groups of half frame bodies (61) on the lifted bridge section (2);
s4: the lifting device (5) lifts the two groups of half frame bodies (61) to a set height, then moves to the installation position of the construction hanger (6), and the two groups of half frame bodies (61) are spliced and then sleeved on the pier (4);
s5: and (5) releasing the connection between the lifting device (5) and the half frame body (61), and repeating the steps S3-S4 to install the next construction hanger (6).
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| CN202011195982.6A CN112252194A (en) | 2020-10-30 | 2020-10-30 | Bridge lifting device, transformation system and transformation construction method |
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| CN202011195982.6A CN112252194A (en) | 2020-10-30 | 2020-10-30 | Bridge lifting device, transformation system and transformation construction method |
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