CN217896241U

CN217896241U - Prepressing support and hanging basket prepressing precast block stacking equipment

Info

Publication number: CN217896241U
Application number: CN202221531385.0U
Authority: CN
Inventors: 何海波; 杨雄; 王长胜; 王洋; 杨冬冬; 宣伟立; 冯旭东; 崔佳成; 彭健; 杨晓帅; 顾青云; 付灏; 俞金阳
Original assignee: Zccc International Engineering Co ltd
Current assignee: Zccc International Engineering Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-11-25
Anticipated expiration: 2032-06-20

Abstract

The utility model belongs to the technical field of the cantilever casting continuous beam construction, concretely relates to pre-compaction support and hang basket pre-compaction prefabricated section pile equipment. The method comprises the following steps: a support beam assembly for carrying a precast block; the height adjusting assembly is arranged at the bottom of the supporting beam assembly and is movably connected with the supporting beam assembly, and the supporting beam assembly is adjusted to be horizontal by adjusting the height of the height adjusting assembly. The utility model discloses a supporting beam subassembly cooperates with the altitude mixture control subassembly, ensures that pre-compaction loading weight distribution is even. The prefabricated section pile position is put regularly, and is highly suitable, is difficult for collapsing, effectively improves the construction security. Simultaneously, the box girder bottom plate and hang the basket atress evenly, and non-deformable further reduces construction safety risk. Through the height of height-adjusting subassembly, adjust the supporting beam subassembly level in a flexible way to realize controlling the prefabricated section pile and make level the correction. Effectively avoid the prefabricated section to collapse, reduce the prefabricated section pile degree of difficulty. The utility model discloses demountable installation has the flexibility, along with adorning, convenient to use.

Description

Prepressing support and hanging basket prepressing precast block stacking equipment

Technical Field

The utility model belongs to the technical field of the cantilever casting continuous beam construction, concretely relates to pre-compaction support and hang basket pre-compaction prefabricated section pile equipment.

Background

The cast-in-place cantilever continuous beam is widely applied to highway and railway bridge engineering and used for crossing pipelines, lines, rivers and the like. The cantilever casting continuous beam 0# section and the side span cast-in-place section are mostly constructed by a bracket method and a support method, and other sections are generally constructed by hanging basket cantilever casting. The hanging basket is mainly made of steel materials, and is used for verifying the reliability and stability of the hanging basket and eliminating the inelastic deformation of the hanging basket, so that the accurate elevation of a poured beam body can be controlled. After construction of the section 0# or the section 1# is completed, the hanging baskets are assembled on the constructed sections, and after the hanging baskets are assembled, static load prepressing of the hanging baskets is carried out.

The existing pre-pressing mode of the hanging basket mainly takes the piling load as a main mode, namely, heavy objects such as sand stones, concrete prefabricated blocks, steel and the like are weighed and then placed on the support and the hanging basket according to the required weight, and the deformation condition of the structure is observed. The precast concrete blocks are frequently used in hanging basket prepressing due to the characteristics of large volume weight, difficult damage, transportation backwards, convenient stacking and the like. Although this kind of mode can realize the pre-compaction to the structure, nevertheless receive hanging basket stowage plane size, preceding festival section to connect the influence of stubble reinforcing bar in the practical application process, the region that can pile is very little, so has more difficulty and defect:

the prefabricated section pile height is higher for the prefabricated section easily collapses. The safety risk of construction is increased, and meanwhile, the workload and difficulty of prepressing are increased;

the prepressing should simulate the actual stress state of the beam, and the web area is limited by the stacking height and the stacking plane size, so that only the precast block can be stacked in the bottom plate area to ensure the prepressing loading weight. Irregular prepressing is indirectly caused, the prepressing of the web plate area is not in place, and the bottom plate area of the box girder is excessively loaded;

and the box girder bottom plate area is excessively loaded, so that the bending moment generated by the box girder bottom plate area exceeds the resisting moment of the cradle bottom die. The hanging basket is easy to deform too much, so that the hanging basket topples;

influenced by the connecting reinforcing steel bars, when the precast blocks are stacked, the gravity center can only move towards the front of the hanging basket. At present, the methodAnd the prepressing of the cradle is evaluated by adopting prepressing weight, cradle deformation and static load time without adopting moment for conversion. Excessive loading of the hanging basket is indirectly caused by stacking the precast blocks with the same weight, so that the safety of the hanging basket is not facilitated;

the bottom plate of the box girder generally has a certain gradient, and the gradient needs to be leveled by adopting a conventional stacking method. Leveling is not satisfactory, the stacking difficulty of the prefabricated blocks is easily increased, and even the prefabricated blocks collapse.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the above-mentioned not enough that prior art exists, provide one kind along with dress, the pre-compaction loading is accurate, construction safety, can freely adjust according to the prefabricated section pile slope and make level, promote work efficiency's pre-compaction support and hang basket pre-compaction prefabricated section pile equipment.

In order to achieve the purpose of the invention, the utility model is realized by the following technical scheme:

a pre-load cradle, comprising:

a support beam assembly for carrying a precast block;

the height adjusting assembly is arranged at the bottom of the supporting beam assembly and is movably connected with the supporting beam assembly, and the supporting beam assembly is adjusted to be horizontal by adjusting the height of the height adjusting assembly.

Common cradle preloading methods include a heavy object (sand bag, steel bar, precast block and the like) stacking method, a steel strand counter-pulling simulated load preloading method, a water tank loading method and a cradle main truss opposite-top preloading method. The precast block stacking preloading method uses the precast blocks to perform stacking simulation on the hanging basket to simulate the actual load distribution condition of the beam body. When the high pier hanging basket is pre-pressed, the pre-pressing of the web plate area is not in place easily due to the limitation of the stacking height and the stacking plane size, and the excessive loading condition of the bottom plate area of the box girder is easy to occur. And then the cradle is easy to deform, and the loading safety of the cradle is further influenced. In addition, the box girder bottom plate has certain slope, needs freely adjust according to prefabricated section pile slope and makes level. In view of this, research and improvement are carried out to solve the existing problems, and a prepressing support is provided, aiming at achieving the purposes of solving the problems and improving the practical value through the technology.

The utility model discloses a supporting beam assembly for bearing prefabricated section is provided with swing joint's height adjusting subassembly with it in supporting beam assembly's bottom. Through supporting beam subassembly and altitude mixture control subassembly cooperation, ensure that pre-compaction loading weight distributes evenly. The prefabricated section pile position is put regularly, and is highly suitable, is difficult for collapsing, effectively improves the construction security. Simultaneously, the box girder bottom plate and hang the basket atress evenly, and non-deformable further reduces construction safety risk. In addition, the bottom plate of the box girder generally has a certain gradient, and the gradient needs to be leveled by adopting a conventional stacking method. Through the height of height-adjusting subassembly, adjust the supporting beam subassembly level in a flexible way to realize controlling the prefabricated section pile and make level the correction. Effectively avoid the prefabricated section to collapse, reduce the prefabricated section pile degree of difficulty.

Preferably, the height adjusting assembly comprises an adjusting jacking placed on the precast block, the adjusting jacking comprises support legs, and screw rods are fixedly connected to the support legs.

The screw rod is fixed on the supporting foot, and the supporting stability is enhanced. In addition, the supporting feet are arranged, so that the contact area of the prefabricated block is increased. Thereby reduced pressure, effectively avoided the prefabricated section pressure-bearing too big to lead to warping impaired, further prevented the too much loading of case roof beam bottom plate.

Preferably, the supporting beam assembly comprises a longitudinal beam, a sleeve penetrating through the longitudinal beam and used for accommodating a screw is arranged on the longitudinal beam, and the screw penetrates through the sleeve, so that the sleeve can be adjusted up and down along the adjusting jacking and can be fixed in position through a bolt.

More preferably, the longitudinal beam is a channel steel, and the sleeve is a steel pipe.

For hollow and thin-walled steel pipes, the radial rigidity is far smaller than the axial rigidity, and the radial bearing capacity at a node is far smaller than the axial bearing capacity. So that the joint of the steel pipe and the component is easy to bend or the welding seam is easy to crack, and the integral structure fails. The connecting structure of the steel pipe joints can be reinforced by utilizing channel steel.

Set up the sleeve pipe that runs through its self and be used for holding the screw rod on the longeron, can play waterproof dirt-proof guard action to the screw rod. In addition, the sleeve is suitable for the omnibearing connection construction of various steel structural members bearing tension and compression bidirectional acting forces, and is convenient and quick to operate. Meanwhile, the sleeve is fixedly connected with the longitudinal beam, so that the radial bearing capacity of the sleeve is enhanced, and the static strength of the joint is improved. In addition, the screw rod penetrates through the sleeve, so that the sleeve can be adjusted up and down along the adjusting jacking and can be fixed in position through the bolt. Thereby change height-adjusting subassembly's height, further adjust a supporting beam subassembly level to realize controlling the prefabricated section pile and make level the correction. Effectively avoid the prefabricated section to collapse, reduce the prefabricated section pile degree of difficulty.

Preferably, the supporting beam assembly further comprises a cross beam, and the cross beam is located above the longitudinal beam and is fixedly connected with the longitudinal beam.

Preferably, the cross beam is an i-shaped steel. The cross beam is fixedly connected with the longitudinal beam, and the bearing effect of the supporting beam assembly on the precast block is enhanced. The I-steel has relatively high and narrow cross section size and more excellent compression resistance.

Preferably, at least two groups of height adjusting assemblies are arranged at the lower end of each longitudinal beam.

And a plurality of groups of height adjusting assemblies are arranged below each longitudinal beam, so that the support beam assembly is favorably adjusted in level. Simultaneously, multiunit altitude mixture control subassembly is connected with the longeron, reinforcing device stability.

Preferably, the height adjusting components are distributed at equal intervals.

The height adjusting assemblies are distributed at equal intervals, so that the height adjustment of the supporting beam assembly is consistent and the stress is uniform.

Preferably, the height adjusting assembly further comprises a cushion block for supporting the supporting leg, the lower end of the cushion block is attached to the precast block located below the cushion block, and the upper end of the cushion block is horizontally arranged.

And a cushion block is arranged below the support leg, so that the lower end of the cushion block is attached to the precast block positioned below the cushion block. Thereby keeping the upper end of the spacer block horizontally arranged and further promoting the support legs to be horizontally placed. The leveling device is beneficial to ensuring the support beam assembly to be horizontal, so that the stacking leveling correction of the precast blocks is controlled.

Preferably, the number of the longitudinal beams is four, and the longitudinal beams are symmetrically arranged in pairs.

The four longitudinal beams are symmetrically arranged in pairs, so that the bearing of the cross beam above the longitudinal beams is facilitated, and the stability of the device is enhanced.

A pre-pressed precast block stacking device of a hanging basket,

comprises the prepressing bracket.

A hanging basket prepressing precast block stacking device comprises a prepressing support. The prefabricated section stacking prepressing is carried out through the auxiliary hanging basket of the prepressing support, and the prepressing loading weight distribution is ensured to be uniform. Meanwhile, the arrangement rule of the stacking positions of the precast blocks can be promoted, the precast blocks are appropriate in height and not easy to collapse, and the construction safety is effectively improved. In addition, be favorable to making the box girder bottom plate and hang the basket atress even, non-deformable further reduces construction safety risk. In addition, the bottom plate of the box girder generally has a certain gradient, and the gradient needs to be leveled by adopting a conventional stacking method. The precast block stacking can be controlled to be leveled through the pre-pressing support, the precast block is effectively prevented from collapsing, and the precast block stacking difficulty is reduced. Simultaneously, pre-compaction support demountable installation has the flexibility, and convenient to use is installed along with using.

Therefore, the utility model discloses following beneficial effect has:

(1) The utility model discloses a supporting beam subassembly cooperates with the altitude mixture control subassembly, ensures that pre-compaction loading weight distribution is even. The prefabricated section pile position is put regularly, and is highly suitable, is difficult for collapsing, effectively improves the construction security. Meanwhile, the box girder bottom plate and the hanging basket are stressed uniformly and are not easy to deform, so that the construction safety risk is further reduced;

(2) The bottom plate of the box girder generally has a certain gradient, and the gradient needs to be leveled by adopting a conventional stacking method. The utility model discloses a height of height-adjusting subassembly, nimble support beam subassembly level of adjusting to realize that control prefabricated section pile makes level the correction. The prefabricated blocks are effectively prevented from collapsing, and the stacking difficulty of the prefabricated blocks is reduced;

(3) The utility model discloses demountable installation has the flexibility, along with adorning, convenient to use.

Drawings

FIG. 1 is a vertical layout view of a pre-pressing bracket;

FIG. 2 is a sectional view of a pre-pressing bracket;

FIG. 3 is a schematic view of an assembly structure of the height adjustment assembly and the longitudinal beam;

FIG. 4 is an elevation view of a pre-compaction support assisting in stacking precast blocks;

FIG. 5 is a cross-sectional view of the pre-compaction support assisting in stacking the precast blocks;

FIG. 6 is an elevation view of stacking precast blocks during the pre-pressing of a conventional hanging basket;

fig. 7 is a cross-sectional view of stacking precast blocks during the prepressing of the conventional hanging basket.

In the figure: a support beam assembly 1; a precast block 2; a height adjustment assembly 3; adjusting the jacking 4; a leg 5; a screw 6; a longitudinal beam 7; a sleeve 8; a bolt 9; a cross member 10; a cushion block 11; the support 12 is pre-pressed.

Detailed Description

The invention is further described with reference to the drawings and the specific embodiments. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Moreover, references to embodiments of the invention in the following description are generally only to be considered as examples of the invention, and not as all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.

As shown in fig. 1-7, the present invention comprises a supporting beam assembly 1 for supporting a precast block 2, and a height adjusting assembly 3 movably connected to the supporting beam assembly 1 is provided at the bottom of the supporting beam assembly 1. Through supporting beam subassembly 1 and height adjusting part 3 cooperation, ensure that pre-compaction loading weight distributes evenly. The stacking positions of the prefabricated blocks 2 are arranged regularly, the height is appropriate, collapse is not prone to occurring, and construction safety is effectively improved. Simultaneously, the box girder bottom plate and hang the basket atress evenly, and non-deformable further reduces construction safety risk. In addition, the bottom plate of the box girder generally has a certain gradient, and the gradient needs to be leveled by adopting a conventional stacking method. Through the height of height-adjusting subassembly 3, adjust the level of supporting beam subassembly 1 in a flexible way to realize controlling 2 piles of prefabricated section and make level the correction. Effectively avoid the prefabricated section to collapse, reduce 2 pile difficulties of prefabricated section. The utility model provides a hang 2 pile equipment of basket pre-compaction prefabricated section, including a pre-compaction support 12.

The height adjustment assembly 3 includes an adjustment jacking 4 placed on the precast block 2. The adjusting jacking 4 comprises a support leg 5, and a screw 6 is fixedly connected to the support leg 5. The screw 6 is fixed on the support 5, which helps to enhance the support stability. In addition, the provision of the legs 5 increases the contact area with the precast block 2. Thereby reduced pressure, effectively avoided prefabricated section 2 pressure-bearing too big to lead to warping impaired, further prevented the too much loading of case roof beam bottom plate.

The height adjusting components 3 are distributed at equal intervals. The transverse arrangement distance is determined according to the distance between the webs, and the longitudinal distance is about 50 cm. The height of the supporting beam assembly 1 can be adjusted uniformly, and the stress is uniform. The height adjusting assembly 3 further comprises a cushion block 11 for supporting the supporting leg 5, the lower end of the cushion block 11 is attached to the precast block 2 located below the cushion block, and the upper end of the cushion block 11 is horizontally arranged. A spacer block 11 is placed under the leg 5 so that the lower end of the spacer block 11 is attached to the precast block 2 located therebelow. So that the upper end of the spacer 11 remains horizontally disposed, which in turn further contributes to the horizontal placement of the foot 5. The leveling device helps to ensure that the supporting beam assembly 1 is horizontal, so that stacking leveling correction of the precast block 2 is controlled.

The support beam assembly 1 comprises a longitudinal beam 7, the longitudinal beam 7 being provided with a sleeve 8 extending through itself and adapted to receive the threaded rod 6. Can play waterproof dirt-proof guard action to screw rod 6. Because of the hollow and thin-walled steel pipe, the radial rigidity is far less than the axial rigidity, and the radial bearing capacity at the node is far less than the axial bearing capacity. So that the joint of the steel pipe and the component is easy to bend or the welding seam is easy to crack, and the integral structure fails. Therefore, the connecting structure of the steel pipe joints can be reinforced by utilizing the channel steel.

In addition, the sleeve 8 is suitable for all-round connection construction of various steel structural members bearing tension and compression bidirectional acting forces, and is convenient and rapid to operate. Meanwhile, the longitudinal beam 7 is a double-spliced 32# channel steel, the sleeve 8 is a steel pipe, and the steel pipe is connected with the longitudinal beam 7 of the double-spliced 32# channel steel through full welding. The radial bearing capacity of the sleeve 8 can be enhanced, and the static strength of the joint can be improved. In addition, the screw 6 penetrates through the sleeve 8, so that the sleeve 8 can be adjusted up and down along the adjusting jacking 4 and is fixed in position through the bolt 9. Thereby change height-adjusting subassembly 3's height, further adjust the support beam subassembly 1 level to realize controlling 2 piles of prefabricated section and make level the correction. Effectively avoid prefabricated section 2 to collapse, reduce the prefabricated section 2 pile degree of difficulty.

The lower end of each longitudinal beam 7 is at least provided with two groups of height adjusting components 3. A plurality of groups of height adjusting assemblies 3 are arranged below each longitudinal beam 7, and are used for adjusting the level of the supporting beam assembly 1. Meanwhile, the multiple groups of height adjusting assemblies 3 are connected with the longitudinal beam 7, and the stability of the device is enhanced.

The support beam assembly 1 further comprises a cross beam 10, and the cross beam 10 is I32I-steel. The cross beam 10 is positioned above the longitudinal beam 7 and is fixedly connected with the longitudinal beam 7, so that an integral structure is formed. The cross beam 10 is connected with the longitudinal beam 7 in a welding mode, and the bearing effect of the support beam assembly 1 on the precast block 2 is enhanced. The I-steel has relatively high and narrow cross section size and more excellent compression resistance.

The number of the longitudinal beams 7 is four, and the longitudinal beams are symmetrically arranged in pairs. Helping to carry the beam 10 above it and enhancing the stability of the device.

The specific use mode of the embodiment is as follows:

when 2 pile pre-compaction of prefabricated section are carried out to the web district, stack partial prefabricated section 2 on hanging the basket die block through hoisting equipment earlier. And then a plurality of sets of pre-pressing brackets 12 are placed on the precast block 2. The support beam assembly 1 includes a longitudinal beam 7, and the longitudinal beam 7 is provided with a sleeve 8 penetrating itself and receiving the screw 6. The screw 6 penetrates through the sleeve 8, so that the sleeve 8 can be adjusted up and down along the adjusting jacking 4 and is fixed in position through the bolt 9. The support beam assembly 1 further comprises a cross beam 10, wherein the cross beam 10 is located above the longitudinal beam 7 and is fixedly connected with the longitudinal beam 7. The supporting beam assembly 1 is further adjusted in level by adjusting the height of the height adjusting assemblies 3 in each set of pre-pressing brackets 12 to be uniform. After the supporting beam assembly 1 is adjusted to be horizontal, the precast blocks 2 are continuously stacked on the supporting beam assembly 1, so that the stacking height of the precast blocks 2 is high enough. Thereby ensuring the pre-pressing loading weight, pre-pressing the web plate area in place and ensuring the uniform stress of the web plate area. When the stacking height of the precast block 2 is higher, the precast block 2 can still be effectively prevented from collapsing. And the construction safety risk is reduced, and the workload and difficulty of prepressing are reduced.

When 2 pile pre-compaction of prefabricated section are carried out to case roof beam bottom plate district, the case roof beam bottom plate generally has certain slope. With conventional stacking methods, grade leveling is required. The cushion block is placed on the box girder bottom plate in the traditional adoption, but only go to adjust the level through the cushion block, not only wastes time and energy but also hardly reaches the expectant effect. At this time, the support beam assembly 1 can be quickly adjusted in level by the pre-pressing bracket 12 engaging with the pad 11. A prepressing bracket 12 is arranged on the precast block 2 which is arranged on the bottom plate of the box girder because of the slope inclination. And a cushion block 11 is arranged below the support leg 5 at the lower end of the prepressing support 12, so that the lower end of the cushion block 11 is attached to the precast block 2 below the cushion block. So that the upper end of the spacer 11 remains horizontally disposed, which in turn further contributes to the horizontal placement of the foot 5. The leveling device helps to ensure that the supporting beam assembly 1 is horizontal, so that stacking leveling correction of the precast block 2 is controlled. After the leveling correction is completed, the precast block 2 is continuously stacked on the supporting beam assembly 1, so that the stacking height of the precast block 2 is high enough. Thereby ensuring the prepressing loading weight, prepressing the bottom plate area of the box girder in place and ensuring the uniform stress of the box girder. Therefore, the actual stress state of the beam is effectively simulated, excessive loading in the bottom plate area of the box beam is avoided, and the bending moment generated in the bottom plate area of the box beam is prevented from exceeding the resisting moment of the bottom die of the cradle. Effectively prevents the overturning phenomenon caused by the excessive deformation of the hanging basket and ensures the safety and reliability of the prepressing of the hanging basket.

Claims

1. A pre-compaction support, comprising:

a support beam assembly (1) for carrying a precast block (2);

the height adjusting component (3) is arranged at the bottom of the supporting beam component (1) and is movably connected with the supporting beam component, and the supporting beam component (1) is adjusted to be horizontal by adjusting the height of the height adjusting component (3);

the height adjusting assembly (3) comprises an adjusting jacking support (4) placed on the precast block (2), the adjusting jacking support (4) comprises support legs (5), and a screw rod (6) is fixedly connected to each support leg (5);

the supporting beam assembly (1) comprises a longitudinal beam (7), a sleeve (8) penetrating through the longitudinal beam (7) and used for accommodating a screw (6) is arranged on the longitudinal beam, and the screw (6) penetrates through the sleeve (8), so that the sleeve (8) can be adjusted up and down along the adjusting jacking (4) and fixed in position through a bolt (9); the novel horizontal beam is characterized by further comprising a cross beam (10), wherein the cross beam (10) is located above the longitudinal beam (7) and is fixedly connected with the longitudinal beam (7).

2. A pre-pressing holder according to claim 1, characterised in that at least two sets of height adjustment assemblies (3) are provided at the lower end of each longitudinal beam (7).

3. A pre-pressing holder according to claim 1 or 2, characterised in that the height adjustment assemblies (3) are equally spaced apart.

4. The prepressing support according to claim 3, wherein the height adjusting assembly (3) further comprises a cushion block (11) for supporting the support leg (5), the lower end of the cushion block (11) is attached to the precast block (2) below the cushion block, and the upper end of the cushion block (11) is horizontally arranged.

5. A pre-pressing holder according to claim 3, characterised in that the number of longitudinal beams (7) is four, which are arranged symmetrically two by two.

6. A cradle pre-compaction precast block stacking apparatus comprising a pre-compaction support as claimed in any one of claims 1~5.