CN112709194A - Hydraulic sliding formwork construction complete equipment for gate pier and construction method - Google Patents

Abstract

The invention discloses a hydraulic sliding formwork construction complete equipment and a construction method for gate piers, and relates to the technical field of construction of gate piers, side walls and other parts of hydraulic engineering concrete dams. The equipment comprises platform support frames and a beam truss, wherein the platform support frames are symmetrically arranged on the left side and the right side of a gate pier in a crossing mode, the beam truss is connected between the two platform support frames, lifting systems used for hanging sliding forms are respectively arranged at the left end and the right end, close to the platform support frames, of the beam truss, and the distance between the left lifting system and the right lifting system can be adjusted relatively on the beam truss. The method comprises the following steps: assembling a slip form → installing a platform support frame and a beam truss → installing a lifting system → hoisting in place → measuring and correcting the slip form → reinforcing steel bars and embedded parts are installed → pouring concrete → maintaining concrete → welding the support frame → sliding lifting the slip form → circulating sliding lifting → dismantling the slip form and hoisting. The equipment has the advantages of exquisite structure and convenience in circulating slip form construction, and the construction method is a high-efficiency and low-cost concrete construction process and has the advantages of high construction speed, good quality, low cost and the like.

Description

Hydraulic sliding formwork construction complete equipment for gate pier and construction method

Technical Field

The invention relates to the technical field of construction of gate piers, side walls and other parts of hydraulic engineering concrete dams, in particular to complete equipment and a construction method for hydraulic sliding formwork construction of gate piers.

Background

The gate piers and the side walls of the hydraulic engineering concrete dam have certain technical difficulty in the construction process, have higher requirement on the continuous construction of concrete, have the characteristics of high degree of mechanization, multi-species cooperative work and forced continuous operation, and any disjunction can influence the whole set, so that the key for making construction preparation and control work thoroughly is the good sliding formwork construction.

Disclosure of Invention

The invention provides complete equipment and a construction method for hydraulic sliding-form construction of gate piers, aiming at improving the construction quality and the construction efficiency.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a gate pier hydraulic pressure slipform construction complete sets, includes to span platform support frame, the connection that sets up in gate pier left and right sides symmetry two crossbeam truss between the platform support frame, the crossbeam truss is being close to both ends are equipped with the hoist system that is used for the carry slipform respectively about the platform support frame, controls two hoist system is in but relative adjustment distance on the crossbeam truss.

Preferably, in the above complete hydraulic sliding formwork construction equipment for gate piers, the platform support frame includes a vertically arranged frame-shaped frame body, and a three-stage operation platform is arranged on the frame-shaped frame body and respectively includes a bottom construction platform, a middle construction platform and a top construction platform.

Preferably, in the complete equipment for hydraulic sliding form construction of the gate pier, the beam truss is provided with a slide rail and a safety barrier which are arranged along the length direction of the beam truss, and the lifting system is connected to the slide rail.

Preferably, in the above complete equipment for hydraulic sliding form construction of gate piers, the lifting system includes a first lifting frame, a second lifting frame and a vertical lifting machine for driving the first lifting frame and the second lifting frame to move up and down synchronously on the beam truss, the sliding form is mounted on the first lifting frame, a horizontal interval adjusting mechanism is connected between the first lifting frame and the second lifting frame, the vertical lifting machine is connected on the beam truss through the sliding rail, and the second lifting frame is connected on the frame-shaped frame body in a manner of moving up and down.

Preferably, in the complete equipment for hydraulic sliding form construction of the gate pier, the vertical lifter comprises a vertical hydraulic jack and a suspender, the suspender is connected to a hydraulic guide rod of the vertical hydraulic jack, and the other end of the suspender is connected with the sliding form.

Preferably, in the complete equipment for hydraulic sliding form construction of gate piers, the horizontal distance adjusting mechanism includes two hydraulic cylinders horizontally arranged up and down, the cylinder bodies of the two hydraulic cylinders are respectively fixed at the upper end and the lower end of the second lifting frame, and the hydraulic guide rods are respectively fixed at the upper end and the lower end of the first lifting frame.

The hydraulic sliding form construction method for the gate pier is carried out by adopting the hydraulic sliding form construction complete equipment for the gate pier, and comprises the following steps of:

s1, assembling the sliding forms, namely forming a rectangular combined steel template by adopting a steel plate with the thickness of 5mm, and using a truss beam formed by angle steel as an outer vertical surface of the template for wailing;

s2, mounting a platform support frame and a beam truss, symmetrically building the platform support frames on the left side and the right side of the gate pier, and connecting the beam truss between the two platform support frames;

s3, installing a lifting system, namely respectively installing a first lifting frame, a second lifting frame, a vertical hydraulic jack and a lifting rod at the positions, close to the left and right platform supporting frames, of the two ends of the beam truss;

s4, hoisting in place, and hoisting the assembled slip form on a hoisting system on a first hoisting frame and a second hoisting frame;

s5, measuring and correcting the sliding modes, and correcting and adjusting the relative distance between the left sliding mode and the right sliding mode and fixing the sliding modes according to the lofting calibration position of the gate pier;

s6, installing the steel bars and the embedded parts, and installing the steel bars and the embedded parts at the current correction position;

s7, pouring concrete, performing layered pouring, lifting the slip form by about 10cm after 3-4 hours of pouring, checking the quality of demolded concrete, prolonging the demolding time if the concrete bulges outwards during intermittent lifting pouring, and shortening the demolding time if the concrete is difficult to demold;

s8, curing the concrete, and after demolding, performing plastering and leveling treatment on the concrete surface;

s9, welding a support frame, and completing the welding of the support frame at the next construction position on the platform support frame;

s10, sliding the slip form, lifting after concrete is leveled to the formwork opening, wherein the time interval of two times of lifting should not exceed 1 hour in principle, lifting by about 20cm each time, hanging a lifting platform frame at the bottom of the slip form after the slip form is lifted by 2-3 m, when the formwork is lifted to about 1m away from the top elevation, entering the stage of finishing sliding lifting by the slip form, slowing down the sliding lifting speed, and performing accurate leveling and alignment work to ensure the correctness of the top elevation and position;

s11, circularly sliding and lifting to finish the slip form pouring construction of the next station;

s12, detaching the slip form, lifting off, detaching the auxiliary equipment on the slip form, reducing the lifting weight, and gradually detaching the slip form and the auxiliary equipment and lifting off.

The invention has the beneficial effects that: the hydraulic sliding formwork construction complete equipment for the gate pier has the advantages of exquisite structure, convenience for circular sliding formwork construction, firm and quick equipment construction, is an efficient and low-cost concrete construction process, and has the advantages of high construction speed, good quality, low cost and the like. The slip form technology is adopted in the hydraulic and hydroelectric engineering for construction, so that the concrete pouring can be improved exponentially, and the method has an important function for the engineering with short construction period and flood control requirements.

Drawings

FIG. 1 is a perspective view of the hydraulic sliding form construction kit for the gate pier of the present invention;

fig. 2 is a flow chart of the construction method of the present invention.

Detailed Description

For a further understanding of the invention, reference is made to the following description taken in conjunction with the accompanying drawings and specific examples, in which:

in the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1, as shown in the drawings, the embodiment of the invention discloses a hydraulic sliding formwork construction complete equipment for a gate pier, which comprises platform support frames 100 symmetrically arranged on the left and right sides of the gate pier, and a beam truss 200 connected between the two platform support frames 100. The left and right ends of the beam truss 200 close to the platform support frame 100 are respectively provided with a lifting system 300 for hanging the sliding form 400, and the distance between the left and right lifting systems 300 on the beam truss 200 can be adjusted relatively.

Specifically, in the preferred embodiment of the present invention, the platform supporting frame 100 includes a vertically arranged frame body 110, and three stages of operation platforms are disposed on the frame body 110, and respectively include a bottom construction platform 120, a middle construction platform 130 and a top construction platform 140. The beam truss 200 is provided with slide rails and safety barriers 200 arranged along the length direction thereof, and the lifting system 300 is connected to the slide rails.

Further, in the preferred embodiment of the present invention, as shown in fig. 1, the lifting system 300 includes a first lifting frame 310, a second lifting frame 320, and a vertical lift 340 driving the first lifting frame 310 and the second lifting frame 320 to move up and down on the girder truss 200 in synchronization. The sliding form 400 is mounted on the first lifting frame 310, and a horizontal distance adjusting mechanism is connected between the first lifting frame 310 and the second lifting frame 320. The vertical lift 340 is slidably coupled to the girder truss 200 by a slide rail, and the second lift frame 320 is coupled to the frame body 110 to be movable up and down.

Further, in the preferred embodiment of the present invention, as shown in fig. 1, the vertical lift 340 includes a vertical hydraulic jack and a boom 350, the boom 350 being connected to a hydraulic guide of the vertical hydraulic jack, and the other end being connected to the slip form 400.

In some embodiments, the horizontal distance adjusting mechanism includes two hydraulic cylinders horizontally disposed up and down, wherein the cylinders of the two hydraulic cylinders are fixed to the upper and lower ends of the second lifting frame 320, and the hydraulic guide rods are fixed to the upper and lower ends of the first lifting frame 310.

Specifically, in the embodiment of the invention, the vertical hydraulic jack adopts a GYD-60 type ball through hydraulic jack, the matched hydraulic control station adopts a YKD-36 type hydraulic station, and the control mode can be automatic or manual. The oil circuit is a hydraulic passage connecting the hydraulic control station and the jack and mainly comprises components such as an oil pipe, a pipe joint, a hydraulic distributor, a one-way stop valve and the like, and the oil circuit is arranged in a grading mode.

The slip form 400 mainly adopts angle steel of less than 80 multiplied by 8mm and angle steel of less than 63 multiplied by 6mm to manufacture a rectangular truss girder of 100cm multiplied by 108cm as an wailing of a template, the truss girder adopts angle steel of less than 80 multiplied by 8mm, and the web member adopts angle steel of less than 63 multiplied by 6 mm. The slip form 400 is assembled by steel plates with the thickness of 5mm and the height of 150 cm. The main beam of the first lifting frame 310 adopts 18 channel steel, and the height is 2 m. The cross beam at the upper part of the second lifting frame 320 is made into a 35X 50cm truss beam by adopting angle steel with the size of 63X 6mm, the upright column is made into a 22X 40cm lattice column by adopting angle steel with the size of 2X [22 channel steel and angle steel with the size of 50X 5mm, and the middle cross beam is connected by adopting 2X [16 channel steel; specifically, the vertical hydraulic jack comprises a 30-unit 10-ton through jack.

The hanger rods 350 are made of phi 48 multiplied by 3.5 steel pipes, joints are staggered according to the standard requirement, the number of joints at each horizontal section is not more than 25% of the total number, and therefore the first hanger rod 350 has four lengths, namely, 3m, 3.5m, 4m and 4.5 m. The jib 350 of installation will guarantee perpendicularly, and the connection of jib 350 will adopt electric welding, and the processing of polishing is carried out to the joint after the welding is qualified, guarantees that climbing of jack is unobstructed. After the booms 350 are placed according to the position of the lifting frame, the hydraulic system is qualified after inspection, at this time, the jacks can penetrate into the respective booms 350, and the whole lifting system 300 is installed completely.

Specifically, the bottom construction platform 120 is used as a place for working such as binding steel bars, pouring concrete, lifting templates, installing embedded parts, and the like, and is also used as a temporary storage place for materials such as steel bars, concrete, embedded parts, and small standby tools such as jacks, vibrators, and the like. The hydraulic control station is placed on the middle construction platform 130, the top construction platform 140 is mainly used for checking the quality of concrete, overhauling of templates, inclination adjustment and disassembly, concrete surface modification, watering maintenance and other work, and the safety protection rail is arranged on the outer side and is full of safety nets.

On the other hand, the invention also provides a hydraulic sliding-form construction method for the gate pier, which is carried out by adopting the hydraulic sliding-form construction complete equipment for the gate pier, and as shown in fig. 2, the method comprises the following steps:

s1, assembling the sliding forms, namely forming a rectangular combined steel template by adopting a steel plate with the thickness of 5mm, and using a truss beam formed by angle steel as an outer vertical surface of the template for wailing;

s2, mounting a platform support frame and a beam truss, symmetrically building the platform support frames on the left side and the right side of the gate pier, and connecting the beam truss between the two platform support frames;

s3, installing a lifting system, namely respectively installing a first lifting frame, a second lifting frame, a vertical hydraulic jack and a lifting rod at the positions, close to the left and right platform supporting frames, of the two ends of the beam truss;

s4, hoisting in place, and hoisting the assembled slip form on a hoisting system on a first hoisting frame and a second hoisting frame;

s5, measuring and correcting the sliding modes, and correcting and adjusting the relative distance between the left sliding mode and the right sliding mode and fixing the sliding modes according to the lofting calibration position of the gate pier;

s6, installing the steel bars and the embedded parts, and installing the steel bars and the embedded parts at the current correction position;

s7, pouring concrete, performing layered pouring, lifting the slip form by about 10cm after 3-4 hours of pouring, checking the quality of demolded concrete, prolonging the demolding time if the concrete bulges outwards during intermittent lifting pouring, and shortening the demolding time if the concrete is difficult to demold;

s8, curing the concrete, and after demolding, performing plastering and leveling treatment on the concrete surface;

s9, welding a support frame, and completing the welding of the support frame at the next construction position on the platform support frame;

s10, sliding the slip form, lifting after concrete is leveled to the formwork opening, wherein the time interval of two times of lifting should not exceed 1 hour in principle, lifting by about 20cm each time, hanging a lifting platform frame at the bottom of the slip form after the slip form is lifted by 2-3 m, when the formwork is lifted to about 1m away from the top elevation, entering the stage of finishing sliding lifting by the slip form, slowing down the sliding lifting speed, and performing accurate leveling and alignment work to ensure the correctness of the top elevation and position;

s11, circularly sliding and lifting to finish the slip form pouring construction of the next station;

s12, detaching the slip form, lifting off, detaching the auxiliary equipment on the slip form, reducing the lifting weight, and gradually detaching the slip form and the auxiliary equipment and lifting off.

Specifically, in step S5, the measurement correction for the sliding mode includes control of the levelness and control of the perpendicularity. In the sliding process of the sliding form 400, the horizontal synchronous sliding of the whole sliding form is kept, which is the key for ensuring the construction quality of the sliding form and is an important factor directly influencing the verticality of the structure. Therefore, it is necessary to observe at any time and take effective levelness control and leveling measures.

Wherein, levelness control specifically includes:

1. observation of levelness

The levelness can be observed by adopting a level gauge, an automatic leveling laser measuring instrument and other equipment. Before sliding form 400 begins to slide up, the height of all jacks is measured, leveled with a level gauge, and a horizontal base line is drawn on each boom 350 with a distinct marking (e.g., a red triangle). After the sliding form 400 starts to slide up, a horizontal dimension line is continuously marked on the suspension rod 350 from the base line upwards according to the lifting height of 20-30 cm or the elevation of 50cm each time so as to observe the levelness. Then, the levelness of the slip form is measured, checked and adjusted at certain intervals, for example, every floor height is raised.

2. Control of levelness

The levelness control method is realized mainly by controlling the lifting difference of a jack, and currently, a limit leveling method and a laser automatic leveling control method are mainly adopted.

The limiting leveling method is that a limiting block is arranged on the suspension rod 350 according to a horizontal dimension line required by leveling, a limiting device is additionally arranged on the hydraulic jack, and a commonly used limiting device is provided with a limiting leveler and a hydraulic limiting valve. The limiting device ascends along with the jack, and when the limiting device ascends to be abutted against the limiting blocking block, the jack stops climbing to achieve the effect of automatic limiting. In the sliding process of the sliding form 400, the sliding form can be automatically limited and leveled once when the jack is completely lifted to the limiting blocking position once. When the limiting blocking block is moved upwards, the limiting blocking block and the limiting blocking block are carefully checked one by one, and the accuracy of the elevation and the firmness in installation are ensured.

The laser automatic leveling control method is that a laser plane instrument is installed at a proper position of an operation platform, the height of a leveling laser beam is about 2m, and a photoelectric signal receiving device is arranged at the elevation position on each jack. Laser beams emitted by the laser planimeter are emitted to the signal receiving device to generate pulse signals, and after the pulse signals are amplified, the electromagnetic valve at the oil inlet of the jack can be controlled to be opened or closed so as to control the climbing of each jack and achieve the aim of leveling. Such control systems typically allow the jack to be kept within 10mm of lift.

Wherein, the straightness control that hangs down of slipform construction specifically includes:

1. observation of verticality

The observation equipment for perpendicularity can adopt an optical vertical theodolite, a laser plumb instrument, a conductive plumb bob and the like, and the accuracy of the observation equipment is not lower than 1/10000. The laser plumb instrument is convenient to operate and high in precision, a plurality of fixed measuring points can be arranged at the bottom layer of a building in construction, and laser receiving targets (square holes need to be reserved in a floor slab) are arranged at the positions, corresponding to the ground measuring points, of the operating platform. During observation, a laser plumb instrument is erected on a measuring point, a power supply is started after centering and leveling, then a plumb laser beam emitted by the instrument is shot on a light spot on a receiving target, and the light spot is compared with the original point position of the receiving target, so that the displacement of the point can be obtained. The conductive plumb bob is a steel plumb bob weighing about 20kg, the tip of the plumb bob is provided with a conductive contact pin, the conductive contact pin is hung on the lower part of the platform by a thin steel wire with the diameter of 2.5mm, and an automatic lengthening and hanging device is arranged on the conductive contact pin. The direction of vertical deviation and the vertical deviation larger than 10mm can be known from signal light connected with the hydraulic control console by wires through the contact pin on the plumb bob colliding with the azimuth contact point arranged on the ground.

2. Control of structural perpendicularity

In slip form construction, there are many factors that affect the verticality of a structure, such as: the load on the operating platform is unevenly distributed, so that the load of the supporting rod is inconsistent, and the structure inclines to the side with large load; the jack is not adjusted in time after generating a lifting difference, and the operating platform cannot rise horizontally; the structural rigidity of the operating platform is poor, so that the levelness of the platform is difficult to control; when concrete is poured, the concrete is not uniform and symmetrical, and the concrete deviates; the hanger bar 350 is arranged unevenly or non-vertically; and the influence of wind power and sunshine.

In order to control the verticality of the structure, some specific preventive measures are required, observation is also required to be strengthened in construction, and correction measures are taken in time after horizontal deviation is found. When the verticality deviation of the structure is corrected, the correction should be performed slowly to avoid hard bending. The methods for correcting the verticality deviation are more, and a platform inclination method and a top wheel deviation correction control method are commonly used.

The platform inclination method is also called as a height difference adjusting control method. The principle is as follows: when a structure experiences a vertical deviation that is displaced to one side, a negative horizontal deviation generally occurs on the same side of the operating platform. Accordingly, the jack on the side should be lifted, so that the operating platform on the side is higher than other parts, and positive horizontal deviation is generated. And then continuously pouring concrete and enabling the operation platform to incline and slide for a section of height, wherein the vertical deviation can be gradually corrected. And when the structural verticality returns to normal, the operating platform is lifted horizontally. For the height difference required by the jack during deviation correction, a mark (inclined lines can be drawn by leveling) can be made on the supporting rod in advance, and the height difference of the jack is preferably controlled by adopting a limiting leveler. It should be noted that when the method is used for correcting the verticality deviation, the inclination of the operating platform should be controlled within 1%.

In the concrete pouring procedure of the step S7, firstly, pouring with the height of about 70cm in a layering way (the thickness of the layer is about 20 cm), namely, after pouring for 3-4 hours, lifting the slip form for about 10cm, checking the quality of demolded concrete, if the concrete bulges outwards during pouring with intermittent rising, the demolded time is prolonged, if the concrete is difficult to demold, the demolded time is shortened, and the specific demolded time is determined according to a field test. And after demoulding, finishing and leveling. And observing whether the gate pier is inclined or deviated by using an instrument, and continuing pouring after all parameters meet the technical requirements to enter a normal sliding-lifting stage.

Wherein, the control of concrete quality includes:

1. horizontal crack of concrete

The horizontal cracks of concrete are caused by: when the template is installed, the inclination is too small or the reverse inclination is generated; correcting the over-emergency vertical deviation in the sliding and lifting process, and seriously inclining the template; the surface of the template is not smooth, the frictional resistance is too large, and the like. For the problems, the fine cracks can be ground and compacted; when the cracks are large, the loose part should be removed immediately after the concrete brought up by the formwork falls off after demoulding, and the concrete with the high first-grade strength grade should be replenished.

2. Concrete surface scaly outward (out skirt)

The reason is that the formwork is protruded outwards due to the fact that the inclination of the formwork is too large or the rigidity of the lower part of the formwork is insufficient, the pouring thickness of each layer of concrete is too high or the lateral pressure of vibrated concrete is large. The processing measures are to adjust the gradient of the template, strengthen the rigidity of the template, control the pouring thickness of each layer and adopt a vibrator with smaller vibration force. The slip form construction has the advantages of high construction speed, high mechanization degree and good integral performance of the structure.

Specifically, step S10 specifically includes:

1. initial stage of slip

After the pouring is finished, an instrument is used for observing whether the gate pier is inclined or deviated, pouring is continued after all parameters meet the technical requirements, and a normal sliding-lifting stage is started;

2. normal glide phase

2.1, in the normal sliding lifting process, lifting is started after concrete is leveled to a formwork opening, the time interval of two times of lifting is not more than 1 hour in principle, the lifting is about 20cm each time, and if the demolding time is not reached, a method of few times of lifting is adopted. When the height of the steel bar, the door slot and the metal embedded part is not enough, the steel bar, the door slot and the metal embedded part are continuously lengthened, and when the length of the steel pipe is not enough, the steel pipe is lengthened;

2.2, after the slip form rises for 2-3 m, hanging a lifting platform frame at the bottom of the slip form for plastering and maintaining, and hanging a safety net outside the lifting platform frame;

2.3, in the lifting process, all the jacks are required to be fully charged with oil and discharged with oil. In the lifting process, if the oil pressure is increased to more than 1.2 times of the normal sliding lifting working pressure of 8Mpa and all jacks cannot be lifted, the lifting operation is stopped, the reason is immediately checked, and the treatment is carried out in time;

2.4, during normal sliding, the operating platform should remain substantially horizontal. And leveling each jack once when the lifting platform slides to 20-40 cm. The relative elevation difference of each jack is not more than 40 mm. The jack-up difference of two adjacent lifting frames is not more than 20 mm;

2.5 before the initial sliding, hanging hammers can be installed at proper positions of the end heads of the upper and lower streams and the trusses on the two side surfaces, the position deviation of the hanging hammers is observed at any time in the sliding and lifting process at the corresponding ground mark position, meanwhile, a measuring instrument is used for observing and finding out the deviation after the sliding form rises for 1-2 m, partial jacks are lifted by adopting a method of closing valves or screwing clamping rings for deviation adjustment, and the deviation adjustment is carried out for multiple times to prevent sudden change.

2.6, when the slip form rises to 1/2 the design height, the casting is suspended. At the moment, the working states of various devices are checked, damaged parts are replaced or maintained, and pouring is continued after the deformation condition of the gate pier is observed and the pouring quality is checked to be qualified;

and 2.7, when the sliding form rises to the height of the bracket, suspending concrete pouring. And (4) removing the arc-shaped template at the pier head part of the slip form and supporting the end template. After the template and the embedded part of the reserved structure at the top of the gate pier are processed, pouring to the design elevation of the gate pier. And finally, lifting the whole sliding mode structure out of the top of the gate pier to be empty, and processing the top surface of the gate pier.

2.8, in the sliding and lifting process, deviation values such as the structural perpendicularity, the levelness, the structural section size and the like are checked and recorded, and if deviation exists, deviation correction is carried out;

and 2.9, in the sliding and lifting process, checking the working states of the operating platform and the suspender and the coagulation state of the concrete at any time, if abnormity is found, analyzing the reason in time, and taking effective treatment measures.

3. Complete the sliding and lifting

When the sliding form 400 slides to about 1m from the top elevation, the sliding form enters a sliding-lifting completion stage, the sliding-lifting speed is slowed down, accurate leveling and alignment work is carried out, and the top elevation and the position are guaranteed to be correct.

In conclusion, the hydraulic sliding-form construction complete equipment for the gate pier has the advantages of being exquisite in structure, convenient for circular sliding-form construction, firm and rapid in equipment building, is an efficient and low-cost concrete construction process, and has the advantages of being high in construction speed, good in quality, low in cost and the like. The slip form technology is adopted in the hydraulic and hydroelectric engineering for construction, so that the concrete pouring can be improved exponentially, and the method has an important function for the engineering with short construction period and flood control requirements.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical idea of the present invention is equivalent to or changed by the present invention.

Claims (7)

1. The utility model provides a gate pier hydraulic pressure slipform construction complete sets, its characterized in that, including span platform support frame (100), the connection that sets up in gate pier left and right sides symmetry two crossbeam truss (200) between platform support frame (100), crossbeam truss (200) are being close to both ends are equipped with hoist system (300) that are used for carry slipform (400) respectively about platform support frame (100), and control two hoist system (300) are in but relative adjustment distance on crossbeam truss (200).

2. The hydraulic slipform construction complete plant of the gate piers according to the claim 1, characterized in that the platform support frame (100) comprises a vertically arranged frame body (110), and three-stage operation platforms are arranged on the frame body (110) and respectively comprise a bottom construction platform (120), a middle construction platform (130) and a top construction platform (140).

3. The hydraulic sliding-form construction complete equipment for gate piers according to claim 2, characterized in that the beam truss (200) is provided with slide rails and safety guardrails (200) arranged along the length direction thereof, and the lifting system (300) is connected to the slide rails.

4. The hydraulic sliding-form construction complete equipment for gate piers according to claim 3, characterized in that the lifting system (300) comprises a first lifting frame (310), a second lifting frame (320) and a vertical lifting machine (340) for driving the first lifting frame (310) and the second lifting frame (320) to synchronously move up and down on the beam truss (200), the sliding form (400) is hung on the first lifting frame (310), a horizontal spacing adjusting mechanism is connected between the first lifting frame (310) and the second lifting frame (320), the vertical lifting machine (340) is slidably connected on the beam truss (200) through the sliding rails, and the second lifting frame (320) is movably connected on the frame body (110) up and down.

5. The hydraulic slide-forming construction kit for gate piers according to claim 4, characterized in that the vertical hoist (340) comprises a vertical hydraulic jack and a boom (350), the boom (350) is connected to a hydraulic guide rod of the vertical hydraulic jack, and the other end is connected to the slide form (400).

6. The hydraulic sliding-form construction complete equipment for gate piers according to claim 4, characterized in that the horizontal spacing adjustment mechanism comprises two hydraulic cylinders horizontally arranged up and down, the cylinders of the two hydraulic cylinders are respectively fixed at the upper and lower ends of the second lifting frame (320), and hydraulic guide rods are respectively fixed at the upper and lower ends of the first lifting frame (310).

7. A hydraulic slipform construction method of gate piers, which is carried out by using the hydraulic slipform construction kit of gate piers according to any one of claims 1 to 6, comprising the steps of:

s1, assembling the sliding forms, namely forming a rectangular combined steel template by adopting a steel plate with the thickness of 5mm, and using a truss beam formed by angle steel as an outer vertical surface of the template for wailing;

s2, mounting a platform support frame and a beam truss, symmetrically building the platform support frames on the left side and the right side of the gate pier, and connecting the beam truss between the two platform support frames;

s3, installing a lifting system, namely respectively installing a first lifting frame, a second lifting frame, a vertical hydraulic jack and a lifting rod at the positions, close to the left and right platform supporting frames, of the two ends of the beam truss;

s4, hoisting in place, and hoisting the assembled slip form on a hoisting system on a first hoisting frame and a second hoisting frame;

s5, measuring and correcting the sliding modes, and correcting and adjusting the relative distance between the left sliding mode and the right sliding mode and fixing the sliding modes according to the lofting calibration position of the gate pier;

s6, installing the steel bars and the embedded parts, and installing the steel bars and the embedded parts at the current correction position;

s7, pouring concrete, performing layered pouring, lifting the slip form by about 10cm after 3-4 hours of pouring, checking the quality of demolded concrete, prolonging the demolding time if the concrete bulges outwards during intermittent lifting pouring, and shortening the demolding time if the concrete is difficult to demold;

s8, curing the concrete, and after demolding, performing plastering and leveling treatment on the concrete surface;

s9, welding a support frame, and completing the welding of the support frame at the next construction position on the platform support frame;

s10, sliding the slip form, lifting after concrete is leveled to the formwork opening, wherein the time interval of two times of lifting should not exceed 1 hour in principle, lifting by about 20cm each time, hanging a lifting platform frame at the bottom of the slip form after the slip form is lifted by 2-3 m, when the formwork is lifted to about 1m away from the top elevation, entering the stage of finishing sliding lifting by the slip form, slowing down the sliding lifting speed, and performing accurate leveling and alignment work to ensure the correctness of the top elevation and position;

s11, circularly sliding and lifting to finish the slip form pouring construction of the next station;

s12, detaching the slip form, lifting off, detaching the auxiliary equipment on the slip form, reducing the lifting weight, and gradually detaching the slip form and the auxiliary equipment and lifting off.

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