CN218059911U

CN218059911U - Basket pre-compaction device is hung to assembled

Info

Publication number: CN218059911U
Application number: CN202221893223.1U
Authority: CN
Inventors: 禹福坤; 孙向友; 刘付浩; 杨峰; 林锦栋; 柯德源; 邓永峰; 林华洲
Original assignee: 9th Engineering Co Ltd of MBEC
Current assignee: 9th Engineering Co Ltd of MBEC
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-12-16
Anticipated expiration: 2032-07-21

Abstract

The utility model provides an assembled string basket pre-compaction device, relates to bridge engineering technical field, sets up on the string basket of zero number piece web side, including setting up the floorbar system on the bottom basket of string basket, can dismantle the tripod system of fixed setting on zero number piece web side, the floorbar system with tripod system bottom side interval corresponds from top to bottom, still including setting up the jack between floorbar system and the tripod system. The device has the advantages of simple structure, clear stress, safety, reliability and capability of better simulating the actual stress condition of the cradle. The investment cost is low, a large amount of prepressing materials and corresponding hoisting machinery are saved, the device can be repeatedly used, and the economical efficiency is good. The device is convenient to assemble and disassemble, is free of welding connection on site, reduces the installation and prepressing time, and reduces the risk of high-altitude operation. The device is not limited by the range of the pier height and the bearing platform, and the 0# block is used as an anchoring point, so that the device is wide in application range and has good popularization.

Description

Basket pre-compaction device is hung to assembled

Technical Field

The utility model relates to a bridge engineering technical field, concretely relates to basket pre-compaction device is hung to assembled.

Background

In highway and railway bridges, the prestressed concrete continuous rigid frame or prestressed concrete continuous beam bridge is a preferred choice for the upper structure of a bridge spanning across rivers, rivers and valleys in a span of 70-250 m due to reasonable structure line type, low manufacturing cost and reliable quality. The prestressed concrete continuous beam or continuous rigid frame is generally constructed by a hanging basket method, and a hanging basket is anchored and hung on a constructed beam section to provide an aerial platform for the next section of construction operation. After the hanging basket is assembled, the hanging basket needs to be pre-pressed, the reliability of the hanging basket is verified, inelastic deformation is eliminated, actual deformation under different loads is measured, the elevation of the vertical mold is determined according to the pre-lifting value, and the elevation of the vertical mold is corrected in deflection control.

The traditional hanging basket prepressing method comprises concrete prepressing blocks, reinforcing steel bars, steel strand preloading, counterweight prepressing for hanging sandbags on a bottom basket, placing a water tank and the like. The method needs a large amount of prepressing materials and corresponding hoisting machinery to be matched, has long loading time and high overhead operation risk, is not suitable for prepressing the hanging basket with the height more than 30m, and has certain limitation.

SUMMERY OF THE UTILITY MODEL

To the defect that exists among the prior art, the utility model aims to reduce pre-compaction material and hoisting machinery's use for pre-compaction speed reduces the high altitude construction risk, does not confine pier stud height and cushion cap scope to, and application scope is wide. Reasonable structure, accurate loading and better simulation of the stress state of the cradle. The material input is few, can have enough to meet the need the use, and construction cost is low, and the ann tears the convenience open, easy operation, convenient and fast ground realizes hanging the basket pre-compaction.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts does:

the assembled hanging basket prepressing device is arranged on a hanging basket on a zero number block web side, and comprises a bottom beam system arranged on a hanging basket bottom basket, a tripod system detachably and fixedly arranged on the zero number block web side, wherein the bottom beam system corresponds to the bottom side of the tripod system at an upper-lower interval, and a jack arranged between the bottom beam system and the tripod system.

Further, the tripod system is including counter-force tripod, vertical spacing bracket, climb awl built-in fitting, A type anchor voussoir, B type anchor voussoir, finish rolling deformed steel bar, anchor roof beam, the connection between the tripod, climb awl built-in fitting, finish rolling deformed steel bar and pre-buried to No. one web, vertical spacing bracket passes through with climbing awl built-in fitting and climb the awl screwed connection, finish rolling deformed steel bar passes through the connector and connects with pre-buried part, and finish rolling deformed steel bar passes through the nut and is connected with A type anchor voussoir, B type anchor voussoir, anchor roof beam, with fixed counter-force tripod is on No. one web side.

Further, a steel plate is adopted between the counter-force tripod and the vertical limiting bracket to be tightly pressed.

Furthermore, the connection system between the triangular frames and the single-side reaction tripod are fixed by adopting a common bolt.

Furthermore, the bottom beam system comprises a longitudinal beam and a transverse distribution beam, the transverse distribution beam is arranged on the bottom basket of the hanging basket, the longitudinal beam is arranged at the position of a zero block web plate on the transverse distribution beam, and the jack is arranged on the longitudinal beam.

Furthermore, the A-type anchoring wedge block and the B-type anchoring wedge block are triangular and used for adjusting the bevel edge of the reaction tripod to be perpendicular to the finish-rolled deformed steel bar.

Compared with the prior art, the utility model discloses following beneficial effect has:

the device has the advantages of simple structure, clear stress, safety, reliability and capability of better simulating the actual stress condition of the cradle. The investment cost is low, a large amount of prepressing materials and corresponding hoisting machinery are saved, the device can be repeatedly used, and the economy is better. The device is convenient to assemble and disassemble, is free of welding connection on site, reduces the installation and prepressing time, and reduces the risk of high-altitude operation. The device is not limited by the range of pier height and bearing platform, utilizes the 0# block as an anchoring point, has wide application range and better popularization.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic side view of the present invention.

In the figure: the steel plate comprises a counterforce tripod-1, a vertical limiting bracket-2, a climbing cone embedded part-3, an A-type anchoring wedge-4, a B-type anchoring wedge-5, finish rolling deformed steel bar-6, a jack-7, an anchoring beam-8, a longitudinal beam-9, a transverse distribution beam-10 and a connection system-11 among tripods.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-2, the present embodiment is an assembled cradle jack back pressure device, which mainly comprises a tripod system for transferring the pre-pressure of the jack to a 0# block web and a bottom beam system for transferring the reaction force to the cradle bottom basket, wherein the jack 7 is placed between the tripod system and the bottom beam system.

The tripod system comprises a counterforce tripod 1, a vertical limiting bracket 2, a cone climbing embedded part 3, an A-type anchoring wedge block 4, a B-type anchoring wedge block 5, finish rolling deformed steel bars 6, an anchoring beam 8 and an inter-tripod connecting system 11. Climb awl built-in fitting 3, finish rolling deformed steel bar 6 pre-buried to 0# piece web, vertical spacing bracket 2 with climb awl built-in fitting 3 through climbing awl screwed connection. The finish rolling deformed steel bar 6 is connected with the embedded part through a connector, and is connected with the A-type anchoring wedge block 4, the B-type anchoring wedge block 5 and the anchoring beam 8 through nuts so as to fix the reaction tripod 1. And a steel plate is adopted between the counter-force tripod 1 and the vertical limiting bracket 2 to make the pad compact. The inter-tripod connecting system 11 and the 3 reaction tripod 1 on the single side are fixed by adopting common bolts.

The bottom beam system consists of longitudinal beams 9 and transverse distribution beams 10. The transverse distribution beam 10 is placed on the bottom basket of the hanging basket, the longitudinal beam 9 is placed at the position of the 0# block web on the transverse distribution beam 10, and the jack 7 is placed on the longitudinal beam 9.

The device comprises the following steps when in use:

step 1: before the 0# piece is pour, fix a position out according to the design drawing at web end template and climb awl built-in fitting 3, the 6 positions of finish rolling screw-thread steel, carry out the trompil to this position, climb awl built-in fitting 3 through climbing awl screw, finish rolling screw-thread steel 6 through the bolt fastening in web end template, climb awl built-in fitting 3 with sticky tape winding centrum before the installation to follow-up demolishs and uses by reverse. All the work is carried out on the ground, and the web end template is integrally hoisted after the embedded part is installed.

Step 2: after the 0# block template is removed, the vertical limiting bracket 2 is installed, a special climbing cone wrench is adopted to screw and rotate a climbing cone screw, and the vertical limiting bracket 2 and the climbing cone embedded part 3 are fixedly connected. After the counter-force tripod 1 is positioned, a connector is adopted to lengthen a finish-rolled deformed steel bar 6, the finish-rolled deformed steel bar is connected with an A-type anchoring wedge block 4, a B-type anchoring wedge block 5 and an anchoring beam 8 through nuts, wherein the A-type anchoring wedge block 4 and the B-type anchoring wedge block 5 are used for fixing an inclined rod of the counter-force tripod 1, and the anchoring beam 8 is used for fixing a vertical rod of the counter-force tripod 1. Adopt the steel sheet to copy between 1 top of counter-force tripod and vertical spacing bracket 2 and fill up closely knit, prevent that counter-force tripod 1 from warping too big at the pre-compaction in-process. After all the reaction tripod 1 are installed, the connection system 11 between the tripods and the inclined rod of the unilateral reaction tripod 1 are connected by adopting a common bolt, and 3 reaction tripods 1 are connected into a whole so as to improve the overall stability.

And step 3: after the hanging basket is assembled, a bottom beam system is installed, two transverse distribution beams 10 are placed on the hanging basket bottom basket, and the hanging basket bottom basket are closely compacted due to the fact that the hanging basket bottom basket needs to be hung in the air, and therefore the fact that the hanging basket bottom basket is evenly stressed is guaranteed. The longitudinal beam 9 is placed at the position of the 0# block web on the transverse distribution beam 10, and the jack 7 is placed on the longitudinal beam 9. Close contact is required to be ensured between the jack 7 and the counter-force tripod 1, an anchor backing plate can be adopted for shoveling if the distance is larger than 10cm, and the jack can provide initial displacement to adjust the distance if the distance is smaller than 10 cm. The longitudinal beam 9, the jack 7, the counter-force tripod 1 and the vertical limiting bracket 2 are positioned on the same line, so that the axial force is pressed during pre-pressing.

And 4, step 4: 3 jacks 7 are respectively placed on two sides of the cradle, every 2 jacks correspond to 1 oil pump, and the jacks 7 are symmetrically loaded so as to be beneficial to stress balance. The loading of the jacks 7 is carried out by 4 times, namely 60 percent of the maximum beam weight → 80 percent of the maximum beam weight → 100 percent of the maximum beam weight → 120 percent of the maximum beam weight, the jacks 7 are synchronously loaded during pre-pressing, and the synchronous difference between the jacks 7 is controlled within 20 KN. And observing the bracket after each loading is finished, arranging pre-pressing measuring points on the hanging basket main truss, the guide beam, the bottom longitudinal beam and the lower cross beam, drawing and weighing a hanging basket pre-pressing change (time-sinking) relation curve according to the observed values, and calculating the elastic and inelastic deformation values of the bottom basket of the hanging basket.

And 5: after the pre-pressing of the hanging basket is finished, the jack 7 is dismantled, the longitudinal beam 9 and the transverse distribution beam 10 are not connected, and the hanging basket can be directly hoisted. And (3) screwing out the fixing screw of the climbing cone embedded part 3, detaching the vertical limiting bracket 2, and screwing out the climbing cone embedded part 3 cone by using a special spanner, so that the climbing cone embedded part can be repeatedly used. And (3) removing the connection of the connection system 11 between the triangular frames, loosening the finish rolling deformed steel bar 6, the A-type anchoring wedge block 4, the B-type anchoring wedge block 5 and the anchoring beam 8 after the counter-force triangular frame 1 is fixed by a crane, and finally removing the counter-force triangular frame 1 by hoisting, thereby completing the dismantling of the assembled cradle counter-pressure device.

The utility model discloses successful application through the various subassembly be assembled between/be connected with this device, forms a safe and reliable's string basket back pressure system, and each subassembly is connected conveniently, has promoted ann greatly and has torn efficiency open for speed reduces the high altitude construction risk. The basket back pressure device of hanging of this example uses and can fall other baskets of hanging of this project and use after accomplishing, practices thrift engineering cost, green, and economic nature is good.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The assembled hanging basket prepressing device is arranged on a hanging basket on the web side of a zero number block, and is characterized by comprising a bottom beam system arranged on a hanging basket bottom basket, a tripod system detachably and fixedly arranged on the web side of the zero number block, a jack (7) arranged between the bottom beam system and the tripod system, wherein the bottom beam system corresponds to the bottom side of the tripod system at an upper-lower interval.

2. The assembly type cradle prepressing device according to claim 1, wherein the tripod system comprises a counterforce tripod (1), a vertical limiting bracket (2), a climbing cone embedded part (3), an A-type anchoring wedge block (4), a B-type anchoring wedge block (5), a finish rolling deformed steel bar (6), an anchoring beam (8) and an inter-tripod connecting system (11), the climbing cone embedded part (3) and the finish rolling deformed steel bar (6) are embedded into a zero number block web, the vertical limiting bracket (2) and the climbing cone embedded part (3) are connected through climbing cone screws, the finish rolling deformed steel bar (6) is lengthened through a connector and the embedded part, and the finish rolling deformed steel bar (6) is connected with the A-type anchoring wedge block (4), the B-type anchoring wedge block (5) and the anchoring beam (8) through nuts so as to fix the tripod (1) on the zero number block web side.

3. The fabricated hanging basket prepressing device according to claim 2, wherein a steel plate landing pad is adopted between the reaction force tripod (1) and the vertical limiting bracket (2) for compaction.

4. An assembled cradle prepressing device according to claim 3, characterized in that the inter-tripod connecting system (11) is fixed with 3 counter-force tripods (1) on one side by common bolts.

5. The pre-pressing device for the assembled cradle according to claim 4, wherein the bottom beam system comprises a longitudinal beam (9) and a transverse distribution beam (10), the transverse distribution beam (10) is arranged on the cradle bottom basket, the longitudinal beam (9) is arranged at the position of a web of a zero block on the transverse distribution beam (10), and the jack (7) is arranged on the longitudinal beam (9).

6. The fabricated hanging basket prepressing device according to claim 5, wherein the A-type anchoring wedge block (4) and the B-type anchoring wedge block (5) are triangular and used for adjusting the inclined edge of the reaction force tripod (1) to be perpendicular to the finish rolling deformed steel bar.