CN218911158U

CN218911158U - Telescopic and lifting bearing device for hollow pier diaphragm construction

Info

Publication number: CN218911158U
Application number: CN202223435639.1U
Authority: CN
Inventors: 李立中; 敬世红
Original assignee: Chongqing Expressway Group Co ltd
Current assignee: Chongqing Expressway Group Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-04-25
Anticipated expiration: 2032-12-14

Abstract

The utility model belongs to the field of bridge construction, and particularly discloses a telescopic lifting bearing device for hollow pier diaphragm construction, which comprises a plurality of groups of bearing components, wherein each bearing component comprises a spandrel girder, telescopic parts which are arranged at two ends of the spandrel girder and extend along the length direction of the spandrel girder, and lifting parts which are arranged on the telescopic parts, and the lifting direction of the lifting parts is mutually perpendicular to the extending direction of the telescopic parts; the free end of the telescopic piece is provided with a pressure sensor; the spandrel girder of multiunit bearing assembly arranges side by side and is used for bearing the load to the construction of diaphragm, and bearing assembly still includes the support piece of pre-buried at hollow mound inner wall, and support piece is used for providing the fulcrum to the both ends of spandrel girder. By adopting the scheme of the utility model, the problem of high dismantling difficulty caused by taking a full framing as a bearing device in the prior art can be solved.

Description

Telescopic and lifting bearing device for hollow pier diaphragm construction

Technical Field

The utility model belongs to the field of bridge construction, and particularly relates to a telescopic lifting bearing device for hollow pier diaphragm construction.

Background

The shape of a hollow thin-wall high pier (hereinafter referred to as a hollow pier) of a large bridge is considered from the aspects of saving materials and stress, and the pier body adopts a thin-wall pier body section structure with a slope being folded up from the lower part to the upper part. In order to improve the stress, a plurality of transverse diaphragms which are arranged transversely are vertically poured in the cavity of the hollow pier at certain intervals. The diaphragm plates are poured through the pouring templates, in the pouring process, the bearing devices are required to be arranged to support the pouring templates so as to bear construction loads, the diaphragm plates are large in size, the requirement on the bearing capacity of the bearing devices is high, and the bearing devices with certain sizes are required to be built so as to meet the requirement on bearing loads. The existing construction method generally adopts a mode of setting up a full framing to finish the diaphragm concrete pouring load bearing system, the full framing has large setting up workload and long period, and particularly, when the diaphragm is dismantled, workers are required to enter into a hollow cavity below the diaphragm to dismantle the bearing device through a central hole reserved in the middle of the diaphragm, so that the dismantling difficulty is high and the safety risk is high.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a telescopic lifting bearing device for hollow pier diaphragm construction, which aims to solve the problems that a full framing is used as a bearing device in the prior art, people need to go through a central hole reserved in the middle of the diaphragm and enter a hollow cavity below the diaphragm to dismantle the bearing device, the dismantling difficulty is high and the safety risk is high.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a telescopic and lifting bearing device for hollow pier diaphragm construction comprises a plurality of groups of bearing components, wherein each bearing component comprises a spandrel girder, telescopic parts which are arranged at two ends of the spandrel girder and extend along the length direction of the spandrel girder, and lifting parts which are arranged on the telescopic parts, and the lifting direction of the lifting parts is mutually perpendicular to the extending direction of the telescopic parts; the free end of the telescopic piece is provided with a pressure sensor; the spandrel girder of multiunit bearing assembly arranges side by side and is used for bearing the load to the construction of diaphragm, and bearing assembly still includes the support piece of the inner wall of pre-buried in hollow mound opposite both sides, and support piece is used for providing the fulcrum to the both ends of spandrel girder.

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

1. through pre-buried support piece at hollow mound inner wall as the fulcrum, can bear great load, and through the pier shaft that will receive the force and transmit the hollow mound, can reduce bearing assembly's size specification to a certain extent, improve and build the convenience of demolishing bearing assembly. The supporting pieces are used for supporting the spandrel girders, the spandrel girders are arranged in parallel to form a plurality of groups, the spandrel girders are conveniently built and removed in sequence while bearing load capacity is guaranteed, the size specification of a single spandrel girder is small, and the spandrel girders are conveniently built and removed through a poured diaphragm plate center hole.

2. By arranging the telescopic parts, on one hand, the total length of the spandrel girder can be adjusted to meet the bearing requirements of construction of transverse partition plates with different heights and different sizes in the hollow pier; on the other hand, by extending the telescopic piece, the end part of the telescopic piece is propped against the inner wall of the hollow pier, the bearing beam can be restrained by the friction resistance of the inner wall of the hollow pier, and the support is more stable and convenient to construct; when the telescopic part is required to be dismantled, the spandrel girder can be dismantled when the end part of the telescopic part is not propped against the inner wall of the hollow pier, and the telescopic part is continuously contracted, so that the total length of the spandrel girder is smaller than the distance between the supporting parts on two sides below the spandrel girder, and the spandrel girder can be free from the constraint of the supporting parts on two sides, thereby being convenient for dismantling the spandrel girder.

Through the setting of lifting part, be convenient for adjust the spandrel girder to the required height and construct, and after the construction is accomplished, adjust the height of lifting part, also can make spandrel girder and be located the diaphragm of its top and pour the template and break away from completely, be convenient for demolish.

3. Through the setting of pressure sensor, the pressure between the mound wall of response extensible member tip and hollow mound, retrieve the atress condition between extensible member tip and the hollow mound inner wall, avoid the too big damage that leads to of pressure between the two, and can make the extensible member better support on the mound wall, the spandrel girder can receive the restraint of mound wall and unable motion.

Drawings

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of connection between the first reel and the first wire rope in an embodiment of the present utility model.

In the figure: 1. a hollow pier; 2. a support; 3. a lifting member; 4. a telescoping member; 5. a spandrel girder; 6. a bottom template; 9. a central template; 10. a first wire rope; 11. a third wire rope; 12. a second wire rope; 13. installing a pipe; 14. a bottom center hole; 15. a first mounting hole; 16. a second mounting hole; 17. a third mounting hole; 21. a first reel; 22. a first fixing ring.

Detailed Description

The utility model is described in further detail below with reference to the drawings in the specification and the detailed description is given.

As shown in fig. 1, a scalable and lift load-bearing device for hollow pier diaphragm construction, including multiunit bearing assembly and multiunit hoist and mount subassembly, the bearing assembly includes spandrel girder 5 and is used for carrying out the support piece 2 that supports spandrel girder 5, and the support piece 2 of every group bearing assembly all includes the I-steel that all pre-buried setting in the relative both sides of hollow pier 1 inner wall to support spandrel girder 5's both ends, through pre-buried at hollow pier 1 inner wall with the I-steel, can provide the fulcrum to spandrel girder 5, and the atress can transmit for hollow pier 1, obtains better supporting effect. The bearing beams 5 of the bearing assemblies are arranged in parallel and used for bearing loads for construction of the diaphragm plates, and the lifting assemblies are in one-to-one correspondence with the bearing beams 5 and are used for lifting the bearing beams 5.

The bearing assembly further comprises a telescopic piece 4 arranged at two ends of the spandrel girder 5 and telescopic along the length direction of the spandrel girder 5, and a lifting piece 3 arranged on the telescopic piece 4, wherein the lifting direction of the lifting piece 3 and the telescopic direction of the telescopic piece 4 are mutually perpendicular, a pressure sensor is arranged at the free end of the telescopic piece 4, specifically, the telescopic piece 4 comprises a transverse supporting block which is slidably connected at the end part of the spandrel girder 5 along the length direction of the spandrel girder 5, the lifting piece 3 comprises a vertical supporting block which is slidably connected on the transverse supporting block, the sliding direction of the vertical supporting block and the sliding direction of the transverse supporting block are mutually perpendicular, and the sliding driving of the transverse supporting block and the vertical supporting block is realized through a control system in a conventional mode in the prior art, such as driving through an air cylinder or through an electric telescopic rod.

The hoisting assembly comprises a first steel wire rope 10, a second steel wire rope 12 respectively connected to two ends of the spandrel girder 5, and a third steel wire rope 11 which is used for penetrating through a central hole of the diaphragm plate after casting and forming and is connected to one end of the spandrel girder 5, in this embodiment, the description is given taking the connection of the third steel wire rope 11 and the first steel wire rope 10 to the same side of the spandrel girder 5 as an example. In the actual construction process, in a template system for pouring the diaphragm plate, a bottom central hole 14 is formed in the middle of a bottom template 6 positioned below the diaphragm plate to be poured, a central template 9 is built in the middle of the bottom template 6, and the central template 9 is used for reserving the central hole in the middle of the diaphragm plate when the diaphragm plate is poured. The bottom template 6 is provided with a plurality of first mounting holes 15 for the first steel wire ropes 10 to pass through, the bottom template 6 is provided with a plurality of second mounting holes 16 for the second steel wire ropes 12 to pass through, the mounting pipes 13 are respectively arranged at the first mounting holes 15 and the second mounting holes 16, the first steel wire ropes 10 pass through the first mounting holes 15 and the mounting pipes 13 positioned at the first mounting holes 15, the second steel wire ropes 12 pass through the second mounting holes 16 and the mounting pipes 13 positioned at the second mounting holes 16, and the third steel wire ropes 11 pass through the bottom center holes 14 and the center template 9, so that the height of the upper end of the transverse partition plate to be poured is higher than that of the transverse partition plate to be poured. In order to facilitate the third steel wire rope 11 to be pulled to the bottom center hole 14, the bottom template 6 is provided with a transverse third mounting hole 17, the third mounting hole 17 is communicated with the bottom center hole 14, and the third steel wire rope 11 passes through the third mounting hole 17 and then is positioned at the bottom center hole 14 and reaches a height higher than the upper end of the diaphragm to be poured after passing through the bottom center hole 14 and the center template 9. The used lines (such as power lines and the like) of the control system (i.e. an air cylinder, an electric telescopic rod and the like for controlling the movement of the telescopic member 4 and the lifting member 3) of the telescopic member 4 and the lifting member 3 also pass through the bottom central hole 14 and the central template 9 to reach a height higher than the upper end of the diaphragm to be poured.

When the bearing assembly is used specifically, before pouring, when the bearing assembly is placed, the telescopic piece 4 is firstly stretched, namely the transverse supporting blocks are slid, the transverse supporting blocks at two ends of the spandrel girder 5 can be erected on the supporting piece 2, then the lifting piece 3 is started, the top elevation of the spandrel girder 5 reaches the height of the bottom template 6 subtracted from the bottom elevation of the diaphragm to be poured, namely the vertical supporting blocks are slid, and the height of the spandrel girder 5 reaches the required position.

The free end at horizontal supporting shoe is fixed through the pressure sensor, after lifting part 3 risees required height, extend extensible member 4 once more for the tip of extensible member 4 supports on the mound wall of hollow mound 1, and detects the atress condition between horizontal supporting shoe tip and the hollow mound 1 inner wall through the pressure sensor between the tip of pressure sensor response extensible member 4 and the mound wall of hollow mound 1, avoids the damage that the too big pressure leads to between the two, and can make the better support of horizontal supporting shoe on the mound wall, spandrel girder 5 receives the restraint of mound wall and can't move.

And then a template system for pouring the diaphragm plates is built above the bearing assembly and pouring is carried out, and in the pouring process, the third steel wire rope 11 always keeps a loose state, namely, no upward tension is supplied to the spandrel girder 5, so that the spandrel girder 5 is prevented from being driven to move. Indicated by a in fig. 1 is a diaphragm formed of poured concrete and a hollow pier 1 sidewall of a certain height.

After pouring, the multiple groups of spandrel girders 5 are removed in sequence, and specifically, the multiple spandrel girders 5 are removed in sequence from the direction close to the central hole of the diaphragm plate to the direction far from the central hole of the diaphragm plate. The step of dismantling the single spandrel girder 5 is: firstly, the lifting piece 3 is started, the upper end of the spandrel girder 5 descends and is separated from the bottom template 6, then the telescopic piece 4 is contracted, two ends of the bearing assembly can be lowered through the supporting pieces 2 positioned on two sides of the bearing assembly, and at the moment, the spandrel girder 5 is not contacted with the bottom template 6, the inner wall of the hollow pier 1 and the supporting pieces 2, and can freely move.

The weight of the spandrel girder 5 is borne by the first steel wire rope 10 and the second steel wire rope 12, then the spandrel girder 5 is synchronously lowered, after a certain distance is lowered, the first steel wire rope 10 is kept motionless, the second steel wire rope 12 is slowly lowered until the second steel wire rope 12 is completely loosened and falls below the diaphragm plate, at the moment, the spandrel girder 5 is pulled by the first steel wire rope 10 to the end part of the spandrel girder, and the spandrel girder is deflected to be in a vertical state from a horizontal state. Then tighten the third wire rope 11, make the third wire rope 11 can provide pulling force to the spandrel girder 5, then slowly drop first wire rope 10 and make first wire rope 10 also loosen and fall to the diaphragm below completely, in this process, spandrel girder 5 is from receiving first wire rope 10, the common pulling force of third wire rope 11 to gradually changing to only bearing the pulling force of third wire rope 11, spandrel girder 5 receives the pulling force of third wire rope 11 and moves to the centre bore department (namely the position of centre form 9) of the diaphragm that has been pour, then upwards pulls third wire rope 11, hangs spandrel girder 5 out. The lifting construction or lifting dismantling of the bearing assembly can be completed through the first steel wire rope 10, the second steel wire rope 12 and the third steel wire rope 11, the hollow cavity is completely not required to be manually entered, the construction can be conveniently completed on the hollow cavity, the construction efficiency is improved, and the safety risk is reduced.

In the above process, the load-bearing beam 5 is lowered or the load-bearing beam 5 is lifted upwards, and the first wire rope 10, the second wire rope 12 or the third wire rope 11 can be controlled by using a winch in the prior art.

In another embodiment of the utility model, as shown in connection with fig. 2, the hoisting assembly further comprises a first reel 21 for winding the first wire rope 10, a second reel for winding the second wire rope 12 and a third reel for winding the third wire rope 11, all of which

reels

21, 12 are driven in rotation by means of a motor as in the prior art. One end of the first steel wire rope 10 is connected with the spandrel girder 5, the first winding drum 21 is detachably connected with the end part of the other end of the first steel wire rope 10, the first steel wire rope 10 is wound and unwound through the rotation of the first winding drum 21, and when the first steel wire rope 10 needs to be completely unwound, the first steel wire rope 10 is detached from the first winding drum 21. One end of the second steel wire rope 12 is connected with the spandrel girder 5, the second winding drum is detachably connected with the end part of the other end of the second steel wire rope 12, the second steel wire rope 12 is wound and unwound through the rotation of the second winding drum, and when the second steel wire rope 12 is required to be completely loosened, the second steel wire rope 12 is detached from the second winding drum. One end of the third steel wire rope 11 is connected with the spandrel girder 5, the other end of the third steel wire rope 11 is fixed with the third winding drum, and the third steel wire rope 11 is wound and unwound through the rotation of the third winding drum.

The first reel 21 is provided with a first fixing part used for being connected with the end part of the first steel wire rope 10, the second reel is provided with a second fixing part used for being connected with the end part of the second steel wire rope 12, the first fixing part comprises first fixing rings 22 fixed on two sides of the outer wall of the first reel 21, the first steel wire rope 10 and the first fixing rings 22 are in interference fit, after the end part of the first steel wire rope 10 passes through the two first fixing rings 22, the end part of the first steel wire rope 10 is distributed along the axial direction of the first reel 21, then the other part of the first steel wire rope 10 is wound on the first reel 21, the end part of the first steel wire rope 10 distributed along the axial direction of the first reel 21 is wound in the first fixing part, the end part of the first steel wire rope 10 is pressed on the outer wall of the first reel 21 through a plurality of circles of first steel wire ropes 10 wound on the outer layer, the first reel 21 is rotated, and when the end part of the first steel wire rope 10 wound is completely loosened, only the end part of the first steel wire rope 10 and the first fixing rings 22 are left to be connected, and then the first steel wire rope 10 can be pulled out of the first bearing beam 10 by applying gravity, namely the first steel wire rope 5, namely the first bearing beam and the first fixing ring 22. The second fixing piece comprises second fixing rings fixed on two sides of the outer wall of the second winding drum, the second steel wire ropes 12 are in interference fit with the second fixing rings, after the end parts of the second steel wire ropes 12 penetrate through the two second fixing rings, the end parts of the second steel wire ropes 12 are distributed along the axial direction of the second winding drum, then other parts of the second steel wire ropes 12 are wound on the second winding drum, and the end parts of the second steel wire ropes 12 distributed along the axial direction of the second winding drum are also wound.

In specific use, after the bearing assembly is placed, the first wire rope 10, the second wire rope 12 and the third wire rope 11 are respectively connected to the first winding drum 21, the second winding drum and the third winding drum. Through the arrangement of the first fixing piece and the second fixing piece, when the first steel wire rope 10 or the second steel wire rope 12 is required to be completely loosened, the first steel wire rope 10 and the second steel wire rope 12 can be automatically loosened only by rotating the first winding drum 21 and the second winding drum for a plurality of times until the first winding drum and the second winding drum rotate to the tail ends of the first steel wire rope 10 and the second steel wire rope 12, and the operation is convenient.

In another embodiment of the utility model, the free end of the telescopic member 4 is provided with a rubber plate, and the friction between the end of the telescopic member 4 and the inner wall of the hollow pier 1 is improved by the arrangement of the rubber plate, so that the possibility of the movement of the spandrel girder 5 relative to the inner wall of the hollow pier 1 is further reduced.

It is noted that 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. Moreover, 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.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims

1. A scalable and lift load-bearing member for construction of hollow mound diaphragm, its characterized in that: the lifting device comprises a plurality of groups of bearing assemblies, wherein each bearing assembly comprises a spandrel girder, telescopic members which are arranged at two ends of the spandrel girder and extend along the length direction of the spandrel girder, and lifting members which are arranged on the telescopic members, and the lifting direction of the lifting members is mutually perpendicular to the extending direction of the telescopic members; the free end of the telescopic piece is provided with a pressure sensor; the spandrel girder of multiunit bearing assembly arranges side by side and is used for bearing the load to the construction of diaphragm, and bearing assembly still includes the support piece of the inner wall of pre-buried in hollow mound opposite both sides, and support piece is used for providing the fulcrum to the both ends of spandrel girder.

2. A telescopic and lifting load-bearing device for hollow pier diaphragm construction according to claim 1, characterized in that: the lifting assembly is used for lifting the bearing assemblies; the hoisting assembly comprises a first steel wire rope, a second steel wire rope and a third steel wire rope, wherein the first steel wire rope and the second steel wire rope are respectively connected to two ends of the spandrel girder, the third steel wire rope is used for being connected to one end of the spandrel girder, and the third steel wire rope is used for penetrating through a center hole of a diaphragm plate to be poured.

3. A telescopic and lifting load-bearing device for hollow pier diaphragm construction according to claim 2, characterized in that: the hoisting assembly further comprises a first winding drum used for winding the first steel wire rope, a second winding drum used for winding the second steel wire rope and a third winding drum used for winding the third steel wire rope, wherein the first winding drum is detachably connected with the end part of the first steel wire rope, and the second winding drum is detachably connected with the end part of the second steel wire rope.

4. A telescopic and lifting load-bearing device for hollow pier diaphragm construction according to claim 1, characterized in that: the free end of the telescopic piece is provided with a rubber plate.