CN220433434U - Portable recyclable concrete system beam steel hanging box construction device in water - Google Patents

Abstract

The utility model provides a light circulated concrete system roof beam steel hanging box construction equipment in water, includes steel hanging box and suspension system, steel hanging box includes die block, side form and semicircle end form, the side form includes first side form and second side form, the bottom of die block is equipped with upper horizontal distribution roof beam, lower floor's longitudinal distribution roof beam and first spandrel girder, first side form fixed mounting is in both sides around the die block upper end face, second side form fixed mounting is in the die block both ends and forms the step, semicircle end form and second side form fixed connection, the bottom of semicircle end form and second side form is equipped with waterproof draw-in groove die block, waterproof draw-in groove bottom form is connected with the die block through the connecting plate, be equipped with the stake foundation hole in the middle of the waterproof draw-in groove bottom form. The utility model can reduce the dosage of the back cover concrete, improve the construction speed and the turnover frequency of the template, shorten the construction period, reduce the construction cost and reduce the pollution of the construction to the water environment.

Description

Portable recyclable concrete system beam steel hanging box construction device in water

Technical Field

The utility model relates to a construction device for a steel hanging box of a light recyclable concrete beam in water.

Background

The traditional bridge engineering underwater tie beam construction template needs the whole bottom die to carry out bottom sealing concrete pouring, has the defects of larger bottom sealing concrete input amount and higher amortization cost, and has larger underwater bottom sealing concrete pouring amount, thereby increasing the side pressure of the box body and further increasing the seepage prevention difficulty. In addition, because the construction site is limited, the crane is only placed on one side for construction, the flange templates are difficult to hoist, assemble and disassemble, the construction speed and the template turnover frequency are influenced, the construction period is prolonged, and the construction cost is increased. Therefore, a portable construction device for the steel hanging box of the concrete beam in water, which can be recycled, is developed to improve the construction work efficiency.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the underwater light recyclable concrete beam steel hanging box construction device which can reduce the dosage of bottom sealing concrete, improve the construction speed and the turnover frequency of templates, shorten the construction period, reduce the construction cost and reduce the water environment pollution caused by the construction.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a light circulated concrete system roof beam steel hanging box construction equipment in aquatic, includes steel hanging box and suspension system, steel hanging box includes die block, side form and semicircle end form, the side form includes first side form and second side form, the bottom of die block is equipped with upper horizontal distribution roof beam, lower floor longitudinal distribution roof beam and first spandrel girder, first side form fixed mounting is in both sides around the die block upper end face, second side form fixed mounting is in the die block both ends and forms the step, semicircle end form and second side form fixed connection, the bottom of semicircle end form and second side form is equipped with waterproof draw-in groove die block, waterproof draw-in groove bottom form is connected with the die block through the connecting plate, be equipped with the stake foundation hole in the middle of the waterproof draw-in groove bottom form.

Further, the upper transverse distribution beams are channel steel and are arranged at a certain interval; the lower layer longitudinal distribution beams are double-spliced channel steel and are arranged at a certain interval; the first spandrel girder is I-steel, welds in the both ends of the vertical distribution beam of lower floor, be equipped with a series of lugs on the first spandrel girder, symmetrical arrangement.

Further, the adjacent first side dies are fixedly connected through bolts, and a rubber water stop belt is arranged at the joint; the first side die is fixedly connected with the bottom die through bolts, and a rubber water stop belt is arranged at the joint.

Further, the second side die is fixedly connected with the first side die through bolts, and a rubber water stop is arranged at the joint.

Further, the semicircular end die is fixedly connected with the second side die through bolts, and a rubber water stop is arranged at the joint.

Further, the waterproof clamping groove bottom die is fixedly connected with the semicircular end die and the second side die through bolts, and a rubber water stop belt is arranged at the joint.

Further, the connecting plate is arranged at the step position, the upper end of the connecting plate is welded with the bottom die, and the lower end of the connecting plate is welded with the waterproof clamping groove bottom die.

And further, the outer sides of the panels of the first side die and the second side die are welded with transverse stiffening ribs by adopting channel steel. And the outer sides of the panels of the semicircular end molds are welded with annular and vertical stiffening ribs by adopting channel steel.

Further, channel steel is arranged between the first side die and the second side die on the front side and the rear side to serve as an inner support.

Further, the hanging system consists of an upper cross beam, a second spandrel girder and a chain block.

Further, the upper beam is I-steel, is erected on a Bailey sheet of the steel platform to serve as a top upper beam, supports the chain block and transmits the load of the steel hanging box to the second spandrel girder.

Further, the second spandrel girder is a steel trestle bailey piece at two sides of the steel platform and is used as a top bearing longitudinal girder.

The construction method of the underwater concrete beam by using the device comprises the following specific procedures:

dismantling steel plates and I-steel on the upper part of a steel platform, assembling a steel hanging box, installing a chain block, sinking the steel hanging box, fixing the chain block, pouring bottom sealing concrete, pumping water, installing an inner support, processing and installing tie bars and side forms, pouring concrete, constructing pier columns and dismantling the steel hanging box.

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

the steel hanging box of the underwater concrete beam is in modularized design, is favorable for site construction, can greatly improve the construction efficiency, shortens the construction period, saves the cost and can be recycled; the semicircular end dies and the bottom die at two ends of the box body are designed in a step mode, height differences are formed in the structural mode, concrete pouring is only needed at the semicircular end dies for sealing the bottom, consumption of materials can be reduced, and the development concept of carbon emission reduction is met.

According to the utility model, the waterproof clamping groove bottom die and the waterproof end die are utilized, so that the dosage of bottom sealing concrete is reduced; the construction method has the advantages that the construction speed and the turnover frequency of the templates can be improved by adopting water assembly and integrally installing the templates, the construction period is shortened, the construction cost can be reduced, and the water environment pollution caused by construction is reduced.

Drawings

FIG. 1 is a top view of a steel suspension box for an underwater concrete beam according to the present utility model;

FIG. 2 is a front view of the steel hanging box of the concrete tie beam in water shown in FIG. 1;

FIG. 3 is a schematic view of the construction equipment of the steel hanging box of the portable and recyclable concrete beam in water;

in the figure: 1. the side mold comprises a bottom mold, 1-1 parts of upper transverse distribution beams, 1-2 parts of lower longitudinal distribution beams, 1-3 parts of first spandrel girders, 2 parts of side molds, 2-1 parts of first side molds, 2-2 parts of second side molds, 3 parts of semicircular end molds, 4 parts of waterproof clamping groove bottom molds, 5 parts of connecting plates, 6 parts of pile foundation holes, 7 parts of upper cross beams, 8 parts of second spandrel girders, 9 parts of chain blocks.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

Referring to fig. 1-3, a construction device for a steel hanging box of a light recyclable concrete beam in water comprises a steel hanging box and a hanging system, wherein the steel hanging box comprises a bottom die 1, side dies 2 and a semicircular end die 3, the side dies 2 comprise a first side die 2-1 and a second side die 2-2, an upper transverse distribution beam 1-1, a lower longitudinal distribution beam 1-2 and a first bearing beam 1-3 are arranged at the bottom of the bottom die 1, the first side die 2-1 is fixedly arranged on the front side and the rear side of the upper end face of the bottom die 1, the second side die 2-2 is fixedly arranged at the two ends of the bottom die 1 and forms steps, the semicircular end die 3 is fixedly connected with the second side die 2-2, waterproof clamping groove bottom dies 4 are arranged at the bottoms of the semicircular end die 3 and the second side dies 2-2, the waterproof clamping groove bottom dies 4 are connected with the bottom die 1 through connecting plates 5, and pile foundation holes 6 are formed in the middle of the waterproof clamping groove bottom dies 4.

In this embodiment, the bottom die 1 is formed by welding three steel plates in a combined manner. The upper transverse distribution beams 1-1 are channel steel and are arranged at a certain interval. The lower-layer longitudinal distribution beams 1-2 are double-spliced channel steel and are arranged at a certain interval. The first spandrel girder 1-3 is I-steel and is welded at two ends of the lower layer longitudinal distribution girder 1-2. A series of lifting lugs are arranged on the first spandrel girder 1-3 and are symmetrically arranged.

In the embodiment, the number of the first side dies 2-1 is six, the adjacent first side dies 2-1 are fixedly connected through bolts, and a rubber water stop belt with the thickness of 3mm is arranged at the joint, so that the steel hanging box is ensured to be completely sealed, and no water leakage is caused. The first side die 2-1 is fixedly connected with the bottom die 1 through bolts, and a rubber water stop belt with the thickness of 3mm is arranged at the joint, so that the steel hanging box is completely sealed and water is not leaked.

In the embodiment, the number of the second side dies 2-2 is four, the second side dies 2-2 are fixedly connected with the first side dies 2-1 through bolts, and a rubber water stop belt with the thickness of 3mm is arranged at the joint, so that the steel hanging box is completely sealed, and no water leakage is caused.

In the embodiment, the number of the semicircular end dies 3 is two, the semicircular end dies 3 are fixedly connected with the second side dies 2-2 through bolts, and a rubber water stop belt with the thickness of 3mm is arranged at the joint, so that the steel hanging box is ensured to be completely sealed, and no water leakage is caused.

In the embodiment, the waterproof clamping groove bottom die 4 is fixedly connected with the semicircular end die 3 and the second side die 2-2 through bolts, and a rubber water stop strip with the thickness of 3mm is arranged at the joint, so that the steel hanging box is completely sealed, and water is not leaked.

In this embodiment, the connection plate 5 is installed at a step position, the upper end of the connection plate 5 is welded with the bottom die 1, and the lower end is welded with the waterproof card slot bottom die 4. The connecting plate 5 is a steel plate, and has the height of 0.5m and the thickness of 6mm.

In this embodiment, the outer sides of the panels of the first side mold 2-1 and the second side mold 2-2 are welded with transverse stiffening ribs by adopting channel steel.

In this embodiment, the outer side of the panel of the semicircular end die 3 is welded with circumferential and vertical stiffening ribs by adopting channel steel, so that the overall rigidity and strength are ensured.

In the embodiment, channel steel is arranged between the first side die 2-1 and the second side die 2-2 on the front side and the rear side to serve as an inner support, so that the stress stability of the side wall is ensured.

In the embodiment, the bottoms of the second side die 2-2 and the semicircular end die 3 are 50cm lower than the tie beam bottom; the waterproof clamping groove bottom die 4 at the bottom of the semicircular end die 3 and the steel pile casing reserve a gap of 5cm, so that the pile foundation hole can be conveniently adjusted when being deviated. The gap between the semicircular end die 3 and the steel pile casing adopts 50cm concrete for sealing the bottom and stopping water, and the bottom sealing concrete adopts C30 underwater fine stone concrete.

In this embodiment, the hanging system is composed of an upper cross beam 7, a second spandrel girder 8 and a chain block 9.

In this embodiment, the upper beam 7 is i-steel, and is erected on a bailey piece of a steel platform as a top upper beam, so as to support a chain block and transfer the load of the steel hanging box to the second spandrel girder.

In this embodiment, the second spandrel girder 8 is a steel trestle bailey piece on two sides of the steel platform, and is used as a top bearing longitudinal girder.

In the embodiment, 10 5T chain blocks are adopted for traction adjustment of the elevation of the steel hanging box and assembly and disassembly of the template.

The construction method of the underwater concrete beam by using the device comprises the following specific procedures:

dismantling steel plates and I-steel at the upper part of a steel platform, assembling a steel hanging box (a waterproof clamping groove bottom die, a side die and a semicircular end die), installing a chain block, sinking the steel hanging box, fixing the chain block, pouring bottom sealing concrete, pumping water, installing an inner support, cutting a steel protective cylinder, chiseling a pile head, machining a tie beam steel bar, installing a side die, casting concrete, constructing a pier column and dismantling the steel hanging box.

The specific precautions of the assembled steel hanging box are as follows:

firstly, the steel hanging box is subjected to trial assembly in a processing plant, and after the steel hanging box is assembled and determined to be correct, the steel hanging box is disassembled and transported to a construction site in a slicing way.

The supporting platform used for assembling the bottom mould of the steel hanging box should be measured and leveled; the deformed steel members should be rectified before assembly.

The side mould of the steel hanging box is subjected to trial assembly firstly, and after the side mould meets the requirements through inspection, the block section assembly joint can be formally welded; before assembly, rust, oxide skin, burrs, dirt and the like within the range of 30mm on each side of the connecting contact surface and the edge of the welding seam should be thoroughly removed, and the metallic luster of the steel is exposed; the steel hanging boxes are assembled and divided into areas symmetrically, and measurement and rechecking are performed in time, so that the assembly errors are prevented from accumulating on one side to exceed a specified value.

Temporary work frames, welding equipment, welding power sources, welding materials, ventilation equipment and CO are prepared before welding ₂ The wind-proof shed frame is used for welding. The welding operation should meet the wind power<And 5, the temperature is more than or equal to 5 ℃, the humidity is less than or equal to 80% and other environmental requirements, welding is not needed in rainy days, and otherwise, measures are taken.

The assembly of the steel hanging box is completed on a temporary platform of the steel trestle according to the steps, the bottom die is assembled block by block, the bottom die is assembled into a whole by welding, and then the side die and the semicircular end die are hoisted. And a 3mm rubber water stop belt is stuck in a gap to stop leakage, and the whole hanging box is assembled at one time.

And (3) comprehensively checking and adjusting the assembled steel hanging box to see whether missing bolts exist or not, and supplementing the missing bolts. When the rigidity of the side mold is insufficient, the side mold is reinforced in emergency, and the mold plate is prevented from being distorted after water pumping.

And after each block of the steel hanging box is processed, carrying out kerosene penetration test on the welding seams. The lime water is brushed on the two sides of the welding seam by using a brush, kerosene is brushed on the welding seam on the inner side of the cofferdam after the lime water is dried, and whether kerosene permeation marks exist on the outer side of the cofferdam or not is checked after 30-60 minutes, and the qualified product is obtained after no permeation.

And (3) repair welding is carried out on the unqualified part of the test and inspection, and a supervision engineer is reported, and the repair welding is carried out again, so that the next working procedure can be carried out after the unqualified part is qualified. The whole water sealing performance of the steel hanging box wallboard is ensured.

The concrete precautions of the sinking steel hanging box are as follows:

the steel hanging box is directly related to the manufacture and measurement of the steel hanging box, so that rechecking measurement is carried out on the water depth and the reservoir bottom elevation before the steel hanging box is sunk. The method takes measures in advance as sufficient digital basis for the inclination possibly occurring when the steel hanging box is hung and the manufacturing of the steel hanging box. The measuring rope, the hammer ball and the weight are enough to be used in measurement, and the accuracy of the measurement result is not influenced by the water level in measurement.

The steel hanging box adopts a one-time integral lowering scheme, and all levels of commanders on site are responsible for practical experience of special operators when the steel hanging box is submerged.

In the whole lowering process of the steel hanging box, the safety and the reliability of each hanging point must be ensured, the stress distribution of each hanging point is ensured to be uniform and consistent, and the requirements on the structural strength and the rigidity of the hanging point of the steel hanging box are higher. If the strength and the rigidity of the steel hanging box cannot meet the requirements, the steel hanging box structure is damaged. The supporting beam is in an eccentric pressed state, once the supporting beam at the hanging point is deformed greatly, the steel wire rope is in contact with the wallboard, and the lowering of the steel hanging box is affected.

The steel hanging box is sunk into two stages, and the inspection of the center line and elevation of the steel hanging box is required to be carried out by using a total station and a level gauge in each stage, so that the steel hanging box is ensured not to incline, twist and deviate in the sinking process, and the sinking height of the steel hanging box meets the design elevation of the bottom sealing concrete and the tie beam.

The first stage:

(1) And checking the flatness and verticality of the steel hanging box to meet the preliminary positioning requirement, and ensuring the quality of welding seams and the existence of leakage.

(2) And (5) making a cofferdam plane positioning control point and a height control scale.

(3) And checking whether the bottom die of the steel hanging box and the chain block are safe and reliable and have faults or not.

And a second stage:

after the sinking preparation is ready, command personnel unify command, and the crane is lifted synchronously, so that the stress of each lifting point is uniform. Checking stress conditions of each component and the hoisting steel wire rope at any time, ensuring that each working part works under a safe condition and ensuring that the steel hanging box can be continuously lowered; the crane slowly and uniformly sinks the steel hanging box to the water surface, and the elevation and the center line of the steel hanging box are checked again, so that the steel hanging box continues to sink after being consistent with the design.

The steel hanging box is penetrated into the box by water at the moment, and because the gap is smaller, the water seepage is small and slow, in order to reduce the buoyancy of the steel hanging box, the hanging box is continuously submerged after the elevation of the water surface in the hanging box is leveled with the water level of the reservoir area, the gap is stopped, and the total station and the level gauge check the center line and the elevation.

In the sinking process of the steel hanging box, the elevation of the steel hanging box is adjusted through the chain block, so that the steel hanging box is ensured to sink to the designed elevation.

When the sinking elevation meets the design requirement, the position and the inclination of the steel hanging box are retested immediately. Locking the chain block.

Notice that:

(1) The hanging points of the steel hanging box should be lifted synchronously and slowly, so that the steel hanging box is prevented from being twisted;

(2) When the bottom distance of the steel hanging box is 1.0m from the designed elevation, the steel hanging box is accurately positioned and then sunk to the designed elevation;

(3) And after the steel hanging box is sunk in place, retesting the position and the inclination of the steel hanging box is carried out.

Pouring back cover concrete, wherein specific notes are as follows:

the general requirements are:

1) The steel hanging box is sunk to the designed elevation, and the bottom of the end mould of the steel hanging box is sealed by means of underwater pouring. The bottom sealing concrete is poured underwater by adopting a vertical conduit method.

2) In the process of back cover, special attention is paid to the compactness of the end mould concrete. The thickness of the back cover concrete is 50cm, the back cover concrete is C30 underwater fine stone concrete, the back cover concrete is ensured to reach the required strength within 40-60 min, and the workability and the like of the back cover concrete must meet the construction process requirements in order to ensure the fluidity of the concrete, and the slump is controlled between 18 cm and 22 cm. The water level difference inside and outside the box is kept consistent as much as possible before casting.

3) The back cover concrete adopts C30 underwater fine stone concrete. The bottom sealing concrete is poured by adopting a central collecting hopper, and the pouring sequence of the bottom sealing concrete is as follows: and (5) performing construction by a simultaneous pouring method from two end dies.

Preparation work before back cover:

before the gap between the bottom die of the waterproof clamping groove of the steel hanging box and the steel protective cylinder is plugged, professional constructors clear sundries on the outer wall of the steel protective cylinder, and the bond strength between the bottom sealing concrete and the steel protective cylinder is ensured. And removing the sediment on the bottom die of the waterproof clamping groove of the steel hanging box.

And (5) pouring bottom sealing concrete:

the quality of the back cover concrete is the key of success of the back cover, and the workability, fluidity and stability of the concrete are strictly controlled. In the pouring process of the back cover concrete, the concrete mixing proportion is adjusted according to specific conditions, so that all indexes of the concrete meet the quality requirement of the back cover concrete.

The concrete is intensively mixed and supplied by a mixing station. Pouring is carried out by adopting a mode of adding a funnel into the guide pipe, butter is smeared in the pouring small funnel before bottom sealing, and the bottom opening of the guide pipe is placed at a position 20-30 cm away from the bottom die, so that continuous and uninterrupted pouring is ensured.

In the process, the elevation of the underwater concrete is measured in time, the concrete volume is checked in time, and the condition that the bottom mould of the waterproof clamping groove of the steel hanging box is cracked or separated from the side mould, and the bottom sealing concrete is leaked due to the fact that the bottom mould of the waterproof clamping groove is not tightly blocked with the steel casing is avoided.

The thickness of the back cover concrete is 0.5m, so that the conduit is ensured to have a certain burial depth, and the conduit is generally not lifted at random when the concrete is poured smoothly, even if the conduit is required to be lifted, the burial depth of the conduit is strictly controlled to be not less than 20cm at the lifting height each time.

In the process of sealing the bottom, the water level difference inside and outside the steel hanging box is basically consistent, and the bottom sealing concrete is prevented from being damaged by the action of water head pressure.

And when the concrete pouring is close to the end, the elevation of the concrete surface is comprehensively measured, and the pouring quantity is increased for the guide pipe near the measuring point with the lower elevation of the concrete surface according to the measurement result until the measured result meets the design requirement. And when the elevation of all the measuring points meets the control requirement, ending the bottom sealing concrete pouring.

The water pumping and the internal support are installed, and specific notes are as follows:

after the strength of the bottom sealing concrete reaches 90%, water can be pumped in the steel hanging box. The inner support is installed while pumping water. When the steel suspended box cofferdam pumps water, the observation of a cofferdam side plate and a suspender system is enhanced. When leakage occurs in the side plates, materials such as cotton yarn, tung oil, plaster and the like are adopted for plugging.

The inner support bears the load transferred by the side die and prevents the side die from deforming. Each horizontal support is on the same horizontal plane when welding, so as to ensure the balance of stress transmission; the inner support should be welded firmly during the welding process, and the free length of the inner support should be reduced.

The inner support is installed and water is pumped, the floating condition of the hanging box is monitored during water pumping, and a water pump is needed to be arranged during outward water pumping during the safety period. Once the steel hanging box has large structural change, water is pumped into the cofferdam immediately, and the balance between the inside and the outside is restored.

The steel casing is cut off, and specific precautions are as follows:

after the water is pumped and drained in the steel hanging box, cleaning sludge and scum on the surface of the substrate, checking whether water leakage exists around the steel hanging box, finding out reasons, and timely processing.

And after the steel hanging box is checked to have no water leakage condition, cutting and reinforcing the pile foundation orifice steel pile casing.

Pile head chiseling adopts a circular cutting method, the pile head height marked on the pile head is measured, and the cutting line of the circular cutting method is positioned 10cm above the pile head elevation, so that the pile head chiseling is prevented. Cutting the steel bars by a cutting machine at the cutting line until the depth reaches the steel bars, and completely stripping the concrete protection layer outside the steel bars above the circular cutting line by using a pneumatic pick; and the steel bars are slightly bent outwards, so that the subsequent construction is facilitated.

Construction of trestle guard rails, the specific precautions are as follows:

setting safety rails in the range of the steel trestle for facilitating underwater tie beam construction, wherein the height of the safety rails is 1.2m, the vertical rods are 10# channel steel, the spacing is 2.0m, and the safety rails are welded on steel plates of the steel trestle; the cross bars are steel pipes with phi 48 multiplied by 3.5mm, and the distance is 60cm. The railing adopts red and white reflective paper, and every 200mm is one. The railings on the two sides are fully provided with a dense mesh safety net so as to prevent personnel from falling off.

The beam steel bar processing, installation and side die installation are specifically noted as follows:

the welding of the main reinforcement of the steel bar adopts double-sided lap welding, the length of a welding line is more than 5d, and 50% of joints are staggered to be not less than 35d and not less than 50cm during blanking; the distance between the tail end of the binding joint of the steel bar and the bending position of the steel bar is not less than 10d, and the joint is not positioned at the maximum bending moment of the component. When the steel bar is bound, except that special regulations are designed, the stirrup is vertical to the main bar, and the joint of the steel bar is firmly bound by iron wires at the center and the two ends of the joint.

Concrete placement, specific precautions are as follows:

the concrete required by the bridge is supplied by a centralized mixing station and transported to a construction site by a concrete tank truck. And when concrete is poured, the vibrating rod is quickly inserted and pulled out, so that the lack of vibration and leakage vibration are prevented, and whether a gap exists in the template or not is checked.

The concrete tank truck is equipped with a chute for pouring, the raw materials of the concrete are strictly controlled during construction, and the slump of the concrete is strictly controlled during pouring of the concrete.

The concrete is compacted by vibrating the vibrating rod, the concrete stops sinking, no bubbles are generated, and the surface is flat and is fluctuated.

And special person detection templates are arranged during concrete pouring, deformation, protection layers and the like are checked, and measures are taken in time when problems are found.

Pier construction, the specific precautions are as follows:

and after the beam tying concrete strength reaches a certain strength, installing pier column templates, and pouring pier column concrete.

The steel hanging box is dismantled, and specific precautions are as follows:

before the steel hanging box is dismantled, the communicating holes are opened on the side dies, so that the difference between the internal water head and the external water head is zero, and the dismantling is performed in the order of supporting the side plates from top to bottom and from top to bottom.

After the tie beam pier column template support is removed, the strength of the tie beam concrete meets the design requirement, a bottom die steel wire rope is fixed, a chain block is loosened, and an end die is removed; removing the side mold after removing the middle inner support; and finally, removing the bottom die and the spandrel girder.

Claims (9)

1. Portable circulated concrete system roof beam steel hanging box construction equipment in aquatic, its characterized in that: including steel hanging box and suspension system, steel hanging box includes die block, side form and semicircle end form, the side form includes first side form and second side form, the bottom of die block is equipped with upper horizontal distribution roof beam, lower floor's longitudinal distribution roof beam and first spandrel girder, first side form fixed mounting is in both sides around the die block upper end face, second side form fixed mounting is in the die block both ends and forms the step, semicircle end form and second side form fixed connection, the bottom of semicircle end form and second side form is equipped with waterproof draw-in groove die block, waterproof draw-in groove die block is connected with the die block through the connecting plate, be equipped with the stake foundation hole in the middle of the waterproof draw-in groove die block.

2. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 1, wherein: the upper transverse distribution beams are channel steel and are arranged at a certain interval; the lower layer longitudinal distribution beams are double-spliced channel steel and are arranged at a certain interval; the first spandrel girder is I-steel, welds in the both ends of the vertical distribution beam of lower floor, be equipped with a series of lugs on the first spandrel girder, symmetrical arrangement.

3. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 1 or 2, wherein: the adjacent first side dies are fixedly connected through bolts, and a rubber water stop belt is arranged at the joint; the first side die is fixedly connected with the bottom die through bolts, and a rubber water stop belt is arranged at the joint; the second side die is fixedly connected with the first side die through bolts, and a rubber water stop belt is arranged at the joint; the semicircular end die is fixedly connected with the second side die through bolts, and a rubber water stop belt is arranged at the joint; the waterproof clamping groove bottom die is fixedly connected with the semicircular end die and the second side die through bolts, and a rubber water stop belt is arranged at the joint.

4. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 1 or 2, wherein: the connecting plate is arranged at the step position, the upper end of the connecting plate is welded with the bottom die, and the lower end of the connecting plate is welded with the waterproof clamping groove bottom die.

5. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 1 or 2, wherein: the outer sides of the panels of the first side die and the second side die are welded with transverse stiffening ribs by adopting channel steel; and the outer sides of the panels of the semicircular end molds are welded with annular and vertical stiffening ribs by adopting channel steel.

6. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 1 or 2, wherein: channel steel is arranged between the first side die and the second side die on the front side and the rear side to serve as an inner support.

7. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 1 or 2, wherein: the hanging system consists of an upper cross beam, a second spandrel girder and a chain block.

8. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 7, wherein: the upper cross beam is I-steel, is erected on a Bailey sheet of the steel platform to serve as a top upper cross beam, supports the chain block and transmits the load of the steel hanging box to the second spandrel girder.

9. The underwater portable recyclable concrete beam steel hanging box construction device as set forth in claim 7, wherein: the second spandrel girder is a steel trestle bailey piece on two sides of the steel platform and is used as a top bearing longitudinal girder.