CN112942154A - Culvert cover plate movable type support-free cast-in-place device and construction method thereof - Google Patents

Abstract

A culvert cover plate movable type support-free cast-in-place device is characterized in that a plurality of hanging beams are erected on the upper end face of a wing wall, trundles are arranged at two ends of each hanging beam and longitudinally travel on the upper end face of the wing wall, a plurality of hanging rods A are arranged below the hanging beams, a net-shaped framework formed by transverse secondary keels and longitudinal main keels is suspended at the lower ends of the hanging rods A, a template is borne on the net-shaped framework, a transfer trolley is arranged below the template in a matched mode and can travel along with the template below; the upper part of the hanging beam is connected with the upright post through a Y-shaped bracket, and the upper end of the upright post is fixed on the lower end surface of the longitudinal beam. The suspender B is connected with the longitudinal beam through a lever block. The method can change the cast-in-place construction of the culvert cover plate by the traditional support method, greatly improve the concrete casting efficiency of the box culvert and save the cast-in-place construction cost of the cover plate. And the quick demoulding and the quick construction can be realized in the operation.

Description

Culvert cover plate movable type support-free cast-in-place device and construction method thereof

Technical Field

The invention relates to the technical field of road construction, in particular to a culvert cover plate movable type support-free cast-in-place device and a construction method thereof.

Background

The culvert is a drainage channel (water channel) which is arranged below a roadbed and built below a road surface in order to ensure that a road can smoothly pass through a water channel without obstructing traffic in the road engineering construction, and water can flow through the lower surface of the road through the structure. The water-saving road is used for draining flood across natural valley depressions, or is used as an interchange for people, livestock and vehicles across large and small roads, or is used as a ditch for farmland irrigation. The brick is made of brick, stone, concrete, reinforced concrete and other materials, and has the shape of tube, box, arch and the like. Wherein box concrete cover plate culvert is the structure commonly used, and its structure includes: wing walls are arranged on two sides above the foundation, and beam type cover plates are arranged above the wing walls. The cover plate can be prefabricated or cast-in-place, and the cast-in-place cover plate has the following advantages: the prefabricated cover plate can be prevented from occupying a large amount of prefabricated fields; the transportation and hoisting cost of the prefabricated cover plate is saved; the wholeness is good, the outward appearance is pleasing to the eye, and the dislocation clearance is little between the board.

In traditional culvert apron cast-in-place construction, the apron need be built full hall support and is under construction, sets up the support in advance, and the construction is built to the culvert both ends gradually to the support beginning in the middle of by the culvert, and the support ground also needs to carry out the preliminary treatment, and the support height is confirmed and is changed according to apron bottom elevation and culvert basis apical elevation, and in the support was built and the use, still need make ground drainage work, prevents that the ground in support district from subsiding, causes the deviation that the apron was pour. The traditional cast-in-place construction method has long construction time and high construction cost, and the construction quality is influenced by the state of the bracket.

The prior art about the cast-in-place construction of the culvert cover plate is inquired as follows: key words: culvert, cover plate, cast-in-place and mobile

1. The construction of a cast-in-place cover plate of a central ditch of the tunnel auxiliary structure integrally moves a formwork; application No.: CN 202020994485.1; the applicant: the fifth project company of Zhongjie-four public bureau, the fourth project company of Zhongjie-four public bureau, the abstract: the field of tunnel construction, in particular to an integral movable formwork for construction of a central ditch cast-in-place cover plate of a tunnel auxiliary structure. The integral movable die carrier comprises a traveling trolley (9), wheels are arranged below the traveling trolley (9), a channel steel beam (10) is arranged on the traveling trolley (9), a steel pipe longitudinal beam (12) is arranged on the channel steel beam (10), a bottom die template (2) is arranged above the steel pipe longitudinal beam (12), the integral movable die carrier further comprises a supporting hanger, a vertical connecting piece (6) is arranged on a horizontal support (7) of the supporting hanger from top to bottom, a spiral screw thread and a spiral screw rod (8) are arranged on the vertical connecting piece (6), the spiral screw thread and the part of a thread below the spiral screw rod (8) are connected with a middle partition plate (3) through a PVC (polyvinyl chloride) reserved hole (11), and the middle partition plate (3) is fixedly connected with the bottom; the middle partition plate (3) and the bottom die template (2) can be driven to lift by rotating the spiral screw threads and the spiral screw rod (8).

2. A cast-in-place culvert cover plate top mould integral moving formwork supporting device; application No.: CN 201520798178.5; the applicant: the sixth engineering limited of the Gezhou dam group, China; and (3) abstract: the utility model provides a cast-in-place culvert apron top mould moving as a whole formwork device, includes pole setting, A-frame, girder, secondary beam, the pole setting top is equipped with the top and holds in the palm, the footing is equipped with the collet, the A-frame lower margin is equipped with the support backing plate, with the pole setting lower part fixed formation stable triangular supports structure, be equipped with the screw rod on the girder, be equipped with U type card on the secondary beam, girder, secondary beam and top hold in the palm and pass through U type card and fixed formation of screw rod wholly, the secondary beam top is equipped with wood-plastic board, the wood-plastic board surface is equipped. The utility model discloses a cast-in-place culvert apron top mould moving as a whole formwork device, the effectual cast-in-place culvert apron of having solved support system come and go dismantlement and installation and template and demolish, assemble and template availability factor reduction scheduling problem many times.

3. A movable cast-in-situ culvert cover plate template bracket; application No.: CN 201310627981.8; the applicant: the fifth engineering limited of the Gezhou dam group; and (3) abstract: the utility model provides a cast-in-place culvert apron formwork support of movable, the support includes many pole settings, horizontal pole and removes the wheel, and the pole setting is the equal telescopic support steel pipe from top to bottom, and every pole setting comprises the sleeve pipe of being responsible for and penetrating the person in charge, is responsible for and the sleeve pipe passes through bolted connection, and the pole setting lower extreme is installed in the pole setting base, and the top is held in the palm with the pole setting top and is connected. According to the movable culvert cover plate template support, the connection among the rod pieces is realized by adopting the right-angle fasteners, the integrity and the stability of the steel pipe support frame are effectively ensured, the assembled structure is flexible to operate, and the later-stage disassembly is also facilitated; the movable wheels are arranged, so that the device can be conveniently moved and can be conveniently moved among different stations; the support frame can be repeatedly used, so that the cost is saved, and the investment is reduced; the device is simple to process, convenient to install, safe and reliable to use, improves the production efficiency and improves the working environment. 4. A push-type bracket for cast-in-place of the culvert cover plate; application No.: CN 201820828939.0; the applicant: the fourth project, ltd, of the seventeen group of medium-iron; and (3) abstract: a push-type support for cast-in-situ culvert cover plates comprises a full-hall frame body and a lifting support matched with a vertical pipe thread of the full-hall frame body, wherein the lifting support comprises a hollow base, an adjusting rod matched with the vertical pipe thread, a thrust bearing arranged at the bottom of an inner cavity of the base and a driving assembly used for driving the adjusting rod to rotate, the bottom end of the adjusting rod vertically penetrates through the top of the base and extends into the base to be fixedly connected with a shaft ring of the thrust bearing, the adjusting rod is rotationally matched with the base, the driving assembly comprises a driven bevel gear fixedly sleeved on the adjusting rod and a driving bevel gear meshed with the driven bevel gear, the outer end of a gear shaft of the driving bevel gear transversely penetrates through the side wall of the base, the gear shaft is rotationally matched with the base, the outer end of the gear shaft is a power input end of the, saving labor and manufacturing cost, ensuring construction safety and avoiding safety quality problems.

5. A culvert roof trolley; application No.: CN 201921045583.4; the applicant: the first engineering limited of the three offices of China and Business; zhongyue third Highway engineering Bureau, Inc.; and (3) abstract: the utility model provides a culvert roof platform truck, includes the spout, is equipped with the support frame on the spout, and the bottom of support frame is equipped with the slide rail, and the support frame includes frame subject, bracing piece, foot rest, and frame subject's bottom is equipped with violently indulges crisscross floor, and the bracing piece is installed to the overlap department of violently indulging the floor, is equipped with the jack in the foot rest, and the outside cover of bracing piece is equipped with flange connection dish, and flange connection dish passes through screw rod and foot rest fixed connection. Compared with the prior art, the utility model the advantage lie in: the construction of the cast-in-place cover plate by the traditional support method is replaced, the continuous cyclic utilization can be realized, the operation is simple and rapid, and the practicability is high; the reinforced rib plate can ensure the rigidity and the non-deformation of the module plate, and the supporting rod below the module plate is stably installed; the driving motor drives the supporting frame to move along the sliding groove, so that time and labor are saved; the lifting and the lowering of the support frame are realized through the jack, the support frame is suitable for different construction environments, fastening is realized through the cooperation of the flange connection disc and the screw, and the safety and the stability are high.

Known from the prior art, the prior art about the cast-in-place culvert cover plate mainly uses the bottom support of the cover plate template to be transformed, but the transformation of the bottom support still can not avoid the dependence on the culvert foundation, and the construction cost and the construction time saving degree are limited. The cover plate construction integral movable formwork in the prior art 1 also adopts the movable formwork walking at the top of the wing wall, but the steel pipe longitudinal beams are arranged at two sides below the formwork, so that the defects are as follows: in the demolding stage, due to the limitation of the steel pipe longitudinal beam on the outline dimension of the template, the dimension of the template cannot be changed, the demolding efficiency is influenced, and the demolding difficulty is increased; in the pouring stage, a constructor cannot walk on the cover plate concrete to vibrate the concrete and the like.

Disclosure of Invention

The invention aims to provide a movable type support-free cast-in-place device for a culvert cover plate and a construction method thereof, which can change the cast-in-place construction of the culvert cover plate by a traditional support method, greatly improve the concrete casting efficiency of a box culvert and save the cast-in-place construction cost of the cover plate. And the quick demoulding and the quick construction can be realized in the operation.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a culvert cover plate movable type support-free cast-in-place device is characterized in that a plurality of hanging beams are erected on the upper end face of a wing wall, trundles are arranged at two ends of each hanging beam and longitudinally travel on the upper end face of the wing wall, a plurality of hanging rods A are arranged below the hanging beams, a net-shaped framework formed by transverse secondary keels and longitudinal main keels is suspended at the lower ends of the hanging rods A, a template is borne on the net-shaped framework, a transfer trolley is arranged below the template in a matched mode and can travel along with the template below; the upper part of the hanging beam is connected with the upright post through a Y-shaped bracket, and the upper end of the upright post is fixed on the lower end surface of the longitudinal beam. The suspender B is connected with the longitudinal beam through a lever block.

The steel reinforcement cage can be directly placed and concrete can be poured to carry out concrete pouring by suspending the upper part of the fixed template, thereby avoiding the template support by adopting a full-hall support mode, saving a large amount of cost and time for erecting the support, avoiding the trouble of adjusting the support to adapt to the bottom elevation of the cover plate, and simultaneously preventing the cover plate pouring deviation caused by the support settlement; the hanger rods A and B are made of finish-rolled deformed steel bars, the longitudinal main keels and the hanging beams are double-spliced channel steel which is back to back, and the hanger rods are clamped and sleeved with bolts for fixing.

And an operation transverse ladder is laid on the upper end surface of the hanging beam. The operation horizontal ladder is used for workers to walk above the device for operation, and manual vibration or auxiliary grouting operation is performed when concrete is poured conveniently.

And one side of the template is provided with a hinge and a lock catch. The hinge and the lock catch are used for fixing the movable steel template, and when the pouring is completed and the demolding is needed, the lock catch is removed, and the rapid descending demolding of the steel template can be carried out.

The wheels of the transfer trolley are rubber tires, one end of the transfer trolley is a directional wheel, and the other end of the transfer trolley is a universal wheel, so that the walking direction of the transfer trolley in the culvert can be conveniently finely adjusted.

The construction method comprises the following steps:

(1) according to the calculated load, the cross-section size, the arrangement interval and the number of the transverse secondary keels and the longitudinal main keels are determined by combining the span of the culvert and the size of a cast-in-place cover plate, and the transverse secondary keels and the longitudinal main keels are assembled and fixed to a template system through bolts and templates;

(2) placing a transfer trolley at a corresponding position at the bottom of the culvert, moving to a pouring section, and placing the template system obtained in the step (1) to the top of the transfer trolley;

(3) assembling the hanging beam, the longitudinal beam, the upright post and the caster, and erecting an operation longitudinal ladder to form a suspension system bracket;

(4) placing sleepers on the tops of wing walls of the pouring sections, placing the suspension system supports obtained in the step (3) on the sleepers, arranging lever hoists among a plurality of groups of suspension beams on the longitudinal beams in a staggered mode, connecting each lever hoist with a lower template system through a suspender B, and then lifting and hoisting the template systems to the pouring positions through the lever hoist systems;

(5) the hanging beam is connected with the template system by the aid of the mounting hanger rod A, a hanger rod nut is locked, then the movable steel template is fixed through a hinge and a buckle lock, a steel reinforcement cage is fixed on the upper surface of the template, and cast-in-place work of the cover plate is performed; the parts of the suspenders A and B interfering with the concrete are isolated by PVC sleeves in advance, so that the suspenders can be conveniently pulled out after the concrete is solidified;

(6) after the pouring is finished, loosening the bolts and the locks of the hanging rods A, lowering the template system onto a transfer trolley through a lever block and a hanging rod B, separating the hanging rods B from the lever block, and moving the transfer trolley to the next pouring section; the sleeper is drawn out by using a jack, and the suspension system moves to the next pouring section along with the movement of a caster;

(7) and (5) repeating the steps (4) to (6) until the cast-in-place construction of the full-section culvert cover plate is completed.

The invention has the advantages that:

(1) the method is used for pouring the culvert cover plate, replaces the traditional full-framing cast-in-place cover plate mode, can greatly improve the concrete pouring efficiency of the box culvert, and saves the cast-in-place construction cost of the cover plate; the method is convenient for manual operation, simple, convenient and flexible, the template installation does not need to be matched by using hoisting machinery for a long time, and the disassembly and the assembly are convenient and quick.

(2) The template can adopt a movable structure, and can realize quick demoulding; the integral suspension system has better integrity, the operation horizontal ladder can provide the space for the operator to walk, and the longitudinal beam and the upright column above also play the role of a handrail, thereby providing safety guarantee for the constructors above.

(3) The device can simultaneously realize the positioning of the template, the rapid demoulding of the template, the movement and the reutilization of the template, the disassembly and the assembly of the template are not needed, and the device has great benefits to the continuity and the stability of the engineering.

(4) The invention can realize the mode that two sets of equipment are simultaneously constructed from the middle to two ends of the culvert, further improve the construction efficiency and shorten the construction period.

Description of the drawings:

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic side view of the present invention;

FIG. 3 is a schematic view of a top view of the transfer cart;

FIG. 4 is a schematic top view of the template system;

the serial numbers and component names in the figures are: 1. a hanging beam; 11. operating the horizontal ladder; 12. crossties; 13. a caster wheel; 2. a suspender A; 21. a suspender B; 3. a template; 31. a hinge; 32. locking; 33. a transverse secondary keel; 34. a longitudinal main keel; 4. a transfer trolley; 5. a lever block; 6. a cover plate; 7. a wing wall; 8. a stringer; 9. and (4) a column.

Detailed Description

Example 1

A culvert cover plate movable type support-free cast-in-place device is characterized in that a plurality of hanging beams 1 are erected on the upper end face of a wing wall 7, casters 10 are arranged at two ends of each hanging beam 1 and longitudinally run on the upper end face of the wing wall 7, a plurality of hanging rods A2 are arranged below each hanging beam 1, a net-shaped framework consisting of transverse secondary keels 33 and longitudinal main keels 34 is hung at the lower ends of the hanging rods A2, a template 3 is borne on the net-shaped framework, a transfer trolley 4 is arranged below the template 3 in a matched mode, and the transfer trolley 4 can run along with the template 3 below; the upper part of the hanging beam 1 is connected with a vertical column 9 through a Y-shaped bracket, and the upper end of the vertical column 9 is fixed on the lower end surface of the longitudinal beam 8. The hanging rod B2 is connected with the longitudinal beam 8 through the lever block 5;

an operation transverse ladder 11 is laid on the upper end face of the hanging beam 1;

a hinge 31 and a lock catch 32 are arranged on one side of the template 3;

the wheels of the transfer trolley 4 are rubber tires, one end of the transfer trolley is a directional wheel, and the other end of the transfer trolley is a universal wheel;

the construction method of the culvert cover plate movable type support-free cast-in-place device comprises the following steps:

(1) according to the calculated load, the cross-section size, the arrangement interval and the number of the transverse secondary keels and the longitudinal main keels are determined by combining the span of the culvert and the size of a cast-in-place cover plate, and the transverse secondary keels and the longitudinal main keels are assembled and fixed to a template system through bolts and templates;

(2) placing a transfer trolley at a corresponding position at the bottom of the culvert, moving to a pouring section, and placing the template system obtained in the step (1) to the top of the transfer trolley;

(3) assembling the hanging beam, the longitudinal beam, the upright post and the caster, and erecting an operation longitudinal ladder to form a suspension system bracket;

(4) placing sleepers on the tops of wing walls of the pouring sections, placing the suspension system supports obtained in the step (3) on the sleepers, arranging lever hoists among a plurality of groups of suspension beams on the longitudinal beams in a staggered mode, connecting each lever hoist with a lower template system through a suspender B, and then lifting and hoisting the template systems to the pouring positions through the lever hoist systems;

(5) the hanging beam is connected with the template system by the aid of the mounting hanger rod A, a hanger rod nut is locked, then the movable steel template is fixed through a hinge and a buckle lock, a steel reinforcement cage is fixed on the upper surface of the template, and cast-in-place work of the cover plate is performed;

(6) after the pouring is finished, loosening the bolts and the locks of the hanging rods A, lowering the template system onto a transfer trolley through a lever block and a hanging rod B, separating the hanging rods B from the lever block, and moving the transfer trolley to the next pouring section; the sleeper is drawn out by using a jack, and the suspension system moves to the next pouring section along with the movement of a caster;

(7) and (5) repeating the steps (4) to (6) until the cast-in-place construction of the full-section culvert cover plate is completed.

Claims (5)

1. Portable cast-in-place device of no support of culvert apron, its characterized in that: a plurality of hanging beams (1) are erected on the upper end face of the wing wall (7), casters (10) are arranged at two ends of each hanging beam (1) and longitudinally travel on the upper end face of the wing wall (7), a plurality of hanging rods A (2) are arranged below the hanging beams (1), a net-shaped framework consisting of transverse secondary keels (33) and longitudinal main keels (34) is suspended at the lower ends of the hanging rods A (2), a template (3) is borne on the net-shaped framework, a transfer trolley (4) is arranged below the template (3) in a matched mode, and the transfer trolley (4) can travel below along with the template (3); the upper part of the hanging beam (1) is connected with a vertical column (9) through a Y-shaped bracket, the upper end of the vertical column (9) is fixed on the lower end surface of the longitudinal beam (8), and the hanging rod B (2) is connected with the longitudinal beam (8) through a lever block (5).

2. The movable cast-in-place device without a support for a culvert cover plate of claim 1, which is characterized in that: an operation transverse ladder (11) is laid on the upper end face of the hanging beam (1).

3. The movable cast-in-place device without a support for a culvert cover plate of claim 1, which is characterized in that: and one side of the template (3) is provided with a hinge (31) and a lock catch (32).

4. The movable cast-in-place device without a support for a culvert cover plate of claim 1, which is characterized in that: the wheels of the transfer trolley (4) are rubber tires, one end of the transfer trolley is a directional wheel, and the other end of the transfer trolley is a universal wheel.

5. The movable cast-in-place device without a support for a culvert cover plate of claim 1, which is characterized in that: the construction method comprises the following steps:

(1) according to the calculated load, the cross-section size, the arrangement interval and the number of the transverse secondary keels and the longitudinal main keels are determined by combining the span of the culvert and the size of a cast-in-place cover plate, and the transverse secondary keels and the longitudinal main keels are assembled and fixed to a template system through bolts and templates;

(2) placing a transfer trolley at a corresponding position at the bottom of the culvert, moving to a pouring section, and placing the template system obtained in the step (1) to the top of the transfer trolley;

(3) assembling the hanging beam, the longitudinal beam, the upright post and the caster, and erecting an operation longitudinal ladder to form a suspension system bracket;

(4) placing sleepers on the tops of wing walls of the pouring sections, placing the suspension system supports obtained in the step (3) on the sleepers, arranging lever hoists among a plurality of groups of suspension beams on the longitudinal beams in a staggered mode, connecting each lever hoist with a lower template system through a suspender B, and then lifting and hoisting the template systems to the pouring positions through the lever hoist systems;

(5) the hanging beam is connected with the template system by the aid of the mounting hanger rod A, a hanger rod nut is locked, then the movable steel template is fixed through a hinge and a buckle lock, a steel reinforcement cage is fixed on the upper surface of the template, and cast-in-place work of the cover plate is performed;

(6) after the pouring is finished, loosening the bolts and the locks of the hanging rods A, lowering the template system onto a transfer trolley through a lever block and a hanging rod B, separating the hanging rods B from the lever block, and moving the transfer trolley to the next pouring section; the sleeper is drawn out by using a jack, and the suspension system moves to the next pouring section along with the movement of a caster;

(7) and (5) repeating the steps (4) to (6) until the cast-in-place construction of the full-section culvert cover plate is completed.

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