CN114542079A - Efficient shaft creeping formwork construction system - Google Patents
Efficient shaft creeping formwork construction system Download PDFInfo
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- CN114542079A CN114542079A CN202210442526.XA CN202210442526A CN114542079A CN 114542079 A CN114542079 A CN 114542079A CN 202210442526 A CN202210442526 A CN 202210442526A CN 114542079 A CN114542079 A CN 114542079A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/12—Accessories for making shaft linings, e.g. suspended cradles, shutterings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/11—Lining shafts; Linings therefor with combinations of different materials, e.g. wood, metal, concrete
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The invention relates to the technical field of climbing formworks, and discloses an efficient shaft climbing formwork construction system which is used for constructing shaft linings in a shaft from bottom to top; comprises a binding platform, a distributing platform and a plastering platform which are overlapped up and down; a lifting frame is arranged at the edge of the material distribution platform, and a creeping formwork power device is arranged on the lifting frame; the hoisting frame extends downwards and exceeds the lower edge of the distributing platform, and the template of the shaft lining is sleeved on the periphery of the hoisting frame; the bottom of the material distribution platform is provided with a center cylinder, the top of the side surface of the center cylinder is provided with top mold frame beams which are radially arranged by taking the center cylinder as the center, the bottom of the center cylinder is also provided with tensioning connecting pieces, and two ends of each tensioning connecting piece are respectively connected with the bottom of the side surface of the lifting frame and the bottom of the side surface of the center cylinder. In the invention, the climbing does not need to wait for the concrete to be completely solidified, and the mould is not required to be removed; the connecting piece is tensioned, so that prestress supported outwards exists in the elastic cylinder, and the die expansion is avoided; the construction is like a production line, so that a plurality of processes are allowed to be constructed simultaneously, and the construction period is shortened remarkably.
Description
Technical Field
The invention relates to the technical field of climbing formworks, in particular to a high-efficiency vertical shaft climbing formwork construction system.
Background
The shaft is an important passage for the underground structure to communicate with the ground and has its special functions such as ventilation, emergency escape passage, etc. for the shaft, it needs a thick lining wall to resist the pressure of the ground and prevent the external water from leaking into the shaft. The diameter of a hole is less behind the shaft excavation, and the degree of depth is darker, and it is neither convenient nor scientific to take the scaffold to carry out lining construction, and the perpendicular transportation equipment of inconvenient use of the construction of tearing open of template, has great difficulty in the construction.
Since the structure of the shaft is similar to that of the chimney, some attempts have been made to perform shaft lining wall construction using a creeping formwork construction process similar to that of chimney construction, such as CN 102704674B-shaft hydraulic self-elevating formwork and construction method.
However, the existing shaft creeping formwork construction system has many problems, and the following four problems are most obvious:
1. it is necessary to provide support points (such as "anchoring devices" in CN 102704674B) on the lining wall which has been finally set to support the creeping formwork system, which results in further prolongation of the construction period (waiting for concrete to be finally set, each climbing further needs to complete the detachment of the creeping formwork system from the current support point and the connection with the next support point), and the lining wall is damaged;
2. the formwork stripping is needed during each climbing (the stripping refers to that the formwork is horizontally stripped to be separated from concrete, if the formwork is not stripped, the finally solidified concrete can not climb the cylindrical vertical shaft formwork), and the formwork stripping needs to be firstly carried out after the formwork stripping, formwork re-support is needed after the formwork climbing is finished, the workload is large, the construction period is prolonged, and the precision is difficult to control during formwork support;
3. because the counter-pulling screw cannot be used, the supporting effect on the template is poor, and the mold expansion force cannot be effectively resisted;
4. and (3) binding a reinforcement cage in advance before pouring.
Disclosure of Invention
The invention provides an efficient vertical shaft creeping formwork construction system.
The technical problem to be solved is that: the existing shaft creeping formwork construction system has the following problems:
1. setting a supporting point on the finally solidified lining wall;
2. the mold needs to be withdrawn every time of climbing, the mold needs to be supported again after climbing is finished, and the precision is difficult to control when the mold is supported;
3. the mold expansion force cannot be effectively resisted, and the mold is easy to expand;
4. and a reinforcement cage needs to be bound in advance before creeping formwork construction.
In order to solve the technical problems, the invention adopts the following technical scheme: an efficient shaft creeping formwork construction system is used for constructing a shaft lining in a shaft from bottom to top; the concrete plastering machine comprises three main working platforms which are horizontally arranged, vertically overlapped, fixedly connected into a whole and used for bearing construction personnel to carry out operation, wherein the main working platforms sequentially comprise a binding platform used for binding steel bars, a distributing platform used for pouring concrete and a plastering platform used for plastering the concrete from top to bottom;
the device comprises a cloth platform, a lifting frame fixedly connected with the cloth platform, a climbing formwork power device and a support rod, wherein the edge of the cloth platform is arranged around the cloth platform at intervals, the lifting frame is provided with the climbing formwork power device, the climbing formwork power device comprises a penetrating jack which is arranged on the lifting frame in a one-to-one correspondence manner with the lifting frame and fixedly connected with the lifting frame, and the support rod is arranged in the penetrating jack in a one-to-one correspondence manner and vertically penetrated by the penetrating jack, the support rod is formed by splicing and fixedly connecting a plurality of subsections from bottom to top one by one, and the lower part of the support rod is embedded in a shaft lining;
the lifting frame extends downwards and exceeds the lower edge of the distributing platform, and the template of the vertical shaft lining is sleeved on the periphery of the lifting frame and is fixedly connected with the lifting frame; a central cylinder fixedly connected with the distributing platform is vertically arranged in the center of the bottom of the distributing platform, the central cylinder is an elastic cylinder capable of resisting centripetal pressure and centrifugal tension in the horizontal direction, top die frame beams radially arranged by taking the central cylinder as the center are arranged at the top of the side surface of the central cylinder, and the top die frame beams are supported below the distributing platform and are in one-to-one correspondence with lifting frames, one end of each top die frame beam is fixedly connected with the side surface of the central cylinder, and the other end of each top die frame beam is fixedly connected with the corresponding lifting frame; the bottom of the central cylinder is also provided with tensioning connecting pieces which are radially arranged by taking the central cylinder as the center and are used for adjusting the verticality of the central cylinder and avoiding the middle part of the distributing platform from being downwarped, the tensioning connecting pieces are telescopic rods or length-adjustable ropes, two ends of each tensioning connecting piece are respectively connected with the bottom of the side surface of the lifting frame and the bottom of the side surface of the central cylinder, and each lifting frame is at least connected with one tensioning connecting piece;
and a rotary material distributor capable of rotating around the central axis of the central cylinder is arranged on the material distribution platform.
Furthermore, the lifting frame comprises a cross rod which extends from the support rod to the material distribution platform in a horizontal direction and is used for bearing the through jack, and a vertical rod which extends vertically and downwards from one end, close to the material distribution platform, of the cross rod and is used for connecting the template, wherein the cross rod is fixedly connected with the vertical rod; the binding platform is erected on the material distribution platform through vertical steel pipes arranged at intervals along the circumferential direction of the material distribution platform, each vertical steel pipe extends upwards to exceed the upper surface of the binding platform, and the parts, located above the binding platform, of the vertical steel pipes are connected through horizontal steel pipes to form a multi-layer frame for placing the steel bars in a classified mode.
Furthermore, the template encloses to form a reducer cylinder structure with a thick upper part and a thin lower part, and the tangent value of the included angle between the generatrix of the reducer cylinder and the vertical line is 0.002-0.003.
Furthermore, a position higher than the center-penetrating jack on the support rod is detachably fixed with a stopper for marking the terminal point of each extension of the center-penetrating jack, a laser leveling instrument for ensuring that the stopper is at the same height is arranged on the material distribution platform, and a control station of the center-penetrating jack is arranged on the material distribution platform.
Further, a laser is arranged at the bottom of the vertical shaft, a target plate with a target ring facing downwards is horizontally arranged at the bottom of the central cylinder, and when the center of the bottom of the central cylinder is located on the central axis of the vertical shaft, laser emitted by the laser penetrates through a position avoiding port in the floating platform and vertically faces upwards to a target center of the target plate on the lower surface of the central cylinder.
Furthermore, a plumb bob with a downward tip is hung in the central cylinder, a target plate fixedly connected with the central cylinder is arranged at a position below the plumb bob in the central cylinder, and when the central cylinder is in a vertical state, the tip of the plumb bob vertically points downwards to a target center on the target plate in the central cylinder.
Further, the center cylinder is a cylindrical cage and comprises section steel frames at the upper end and the lower end and vertical steel pipes arranged at the cylinder wall of the center cylinder at intervals along the circumferential direction of the center cylinder, and horizontal reinforcing plates used for reinforcing the capacity of the center cylinder for resisting horizontal centripetal pressure are arranged in the center cylinder at intervals along the vertical direction.
Further, rotatory cloth machine includes erects the hopper on the cloth platform through rotatory pillar, hopper a week is radially to be provided with and is used for pouring into the chute in the template with the concrete that falls into the hopper, be provided with the concrete pump pipe that is used for the feeding of rotatory cloth machine in the shaft, the concrete pump pipe upwards splices and leads to into the hopper from the shaft bottom festival by festival, the concrete pump pipe is fixed on the wall of a shaft well.
Further, the top formwork frame beam is a Bailey truss beam, the upper end of the chute is hinged with the discharge hole of the hopper and forms a structure capable of lifting the overhanging end of the chute, and a formwork position regulator used for regulating the distance between the formwork and the vertical shaft wall is arranged between the formwork and the lifting frame.
Furthermore, a suspension cage used for conveying construction materials and supplying workers to go up and down the main working platform is arranged at a position higher than the creeping formwork construction system in the shaft, a crawling ladder is arranged between every two adjacent main working platforms, and a guardrail and a safety net are arranged at the edge of each cloth platform.
Compared with the prior art, the efficient vertical shaft creeping formwork construction system has the following beneficial effects:
according to the invention, the whole system is supported by the center-penetrating jack and the support rod, the bearing of concrete is not relied on, the climbing can be carried out after the initial setting of the currently poured concrete, and the waiting for the complete setting of the concrete is not needed; the construction efficiency is improved and the construction period is shortened;
according to the invention, the concrete can climb after initial setting (the adhesion of the template is much weaker than that of the template during final setting, the template is easy to separate from the concrete), the template is supported by the elastic central cylinder (namely the central cylinder is allowed to slightly deform and can be restored to elastic deformation, and the volume change of the concrete can be buffered by the central cylinder, so that the adhesion of the concrete and the template is weakened), and the template is enclosed into a variable-diameter cylinder structure with a thick upper part and a thin lower part (the template cannot slide down, and the adhesion of the concrete is only required to be overcome when the template climbs, and the friction and the holding of the concrete are not required to be overcome), so that the template does not need to retreat during climbing; construction efficiency is further improved, and construction period is shortened;
according to the invention, the elastic central cylinder props the template, and the connecting piece is tensioned to enable the elastic cylinder to have prestress which props outwards, so that the template is effectively propped, and the expansion of the template is avoided; the construction quality is improved;
according to the construction method, all construction instruments and platforms required by shaft lining construction are integrated from top to bottom according to the construction sequence, and the construction is like a flow line, so that a plurality of working procedures are allowed to be simultaneously constructed, and a reinforcement cage does not need to be bound in advance; further improving the construction efficiency and shortening the construction period.
Drawings
Fig. 1 is a schematic structural diagram of an efficient shaft creeping formwork construction system according to the present invention;
three constructors are drawn in the drawing to facilitate understanding, and the proportion of the three constructors is reduced to avoid influence on reading due to shielding, meanwhile, a vertical steel pipe in the central cylinder is thinner than the actual vertical steel pipe so as not to be shielded, and the line of the central cylinder is thickened so as to facilitate identification;
the method comprises the following steps of 11-binding platform, 12-distributing platform, 13-plastering platform, 21-lifting frame, 22-penetrating jack, 23-supporting rod, 31-template, 32-central cylinder, 33-top template frame beam, 34-tensioning connecting piece, 41-rotary distributing machine and 42-concrete pump pipe.
Detailed Description
As shown in fig. 1, an efficient shaft creeping formwork construction system for constructing a shaft lining in a shaft from bottom to top; the main working platform is sequentially provided with a binding platform 11 for binding steel bars, a distributing platform 12 for pouring concrete and a plastering platform 13 for plastering concrete from top to bottom; the platforms are arranged from top to bottom according to the construction sequence, so that the construction can be carried out like a production line during construction.
The template 31 adopts 124 series arc steel section moulds, namely the steel panel adopts a Q235 steel plate with the thickness of 4mm, the vertical secondary ribs are steel plate strips with the thickness of 100 multiplied by 4mm, and the distance between the vertical secondary ribs is 700 mm; the transverse main ribs and the transverse side frames are made of Q235 steel plates with the width of 120mm and the thickness of 8mm, and the distance between the transverse main ribs and the transverse side frames is 300 mm; the vertical frames are steel belts with the thickness of 120mm by 10mm, and flat interfaces are arranged between the templates 31.
The cloth platform 12 border is provided with the hoisting frame 21 with cloth platform 12 fixed connection around cloth platform 12 a week interval, be provided with climbing formwork power device on the hoisting frame 21, climbing formwork power device includes and sets up on the hoisting frame 21 and with hoisting frame 21 fixed connection's punch jack 22 with hoisting frame 21 one-to-one, and with punch jack 22 one-to-one and vertically wear to establish the bracing piece 23 in punch jack 22, bracing piece 23 is formed by a plurality of subsections from bottom to top section by section amalgamation and fixed connection, and the bracing piece 23 lower part is buried underground in the shaft lining.
The climbing formwork power device formed by the support rod 23 and the penetrating jack 22 does not depend on lining concrete for bearing, and the concrete only ensures the support rod 23 to be stable, so that the climbing formwork can climb after the concrete is initially set. The initial setting time of the concrete can be adjusted by additives such as an early strength agent and the like, and can meet the national regulation as long as not less than 45 minutes. And the work of ligature steel reinforcement cage is very slow, in the latency after having pour the concrete, can let the constructor that the two-layer below idles get off all go up ligature steel reinforcement cage, and the steel reinforcement cage ligature is finished, and the concrete just also the initial set has been accomplished, alright in order to climb. Besides being bound by one steel bar, the steel reinforcement cage can be hoisted into sections from top to bottom and connected.
The hoisting frame 21 extends downwards and exceeds the lower edge of the material distribution platform 12, and the template 31 of the vertical shaft lining is sleeved on the periphery of the hoisting frame 21 and is fixedly connected with the hoisting frame 21; a central cylinder 32 fixedly connected with the cloth platform 12 is vertically arranged in the center of the bottom of the cloth platform 12, the central cylinder 32 is an elastic cylinder capable of resisting centripetal pressure and centrifugal tension in the horizontal direction, top die frame beams 33 radially arranged by taking the central cylinder 32 as the center are arranged at the top of the side surface of the central cylinder 32, the top die frame beams 33 are supported below the cloth platform 12 and are in one-to-one correspondence with the lifting frames 21, one end of each top die frame beam is fixedly connected with the side surface of the central cylinder 32, and the other end of each top die frame beam is fixedly connected with the corresponding lifting frame 21; the bottom of the central cylinder 32 is further provided with tensioning connecting pieces 34 which are radially arranged by taking the central cylinder 32 as a center and used for adjusting the verticality of the central cylinder 32 and avoiding the middle part of the distributing platform 12 from being warped downwards, the tensioning connecting pieces 34 are telescopic rods or length-adjustable ropes, two ends of each tensioning connecting piece 34 are respectively connected with the bottom of the side surface of each lifting frame 21 and the bottom of the side surface of the central cylinder 32, and each lifting frame 21 is connected with at least one tensioning connecting piece 34. In this embodiment, 6 lifting frames 21 and 12 tensioning connectors 34 are provided, and each tensioning connector 34 comprises two steel bars connected with each other through a turnbuckle, and the length of each steel bar is adjusted through the turnbuckle. Two tension links 34 are symmetrically mounted on each lifting frame 21.
Here the upper half of the central tube 32 is pressed inwards and the lower half is pulled outwards, so that the template 31 is forced outwards while also avoiding sagging of the middle of the material platform 12. The central part of the distributing platform 12 is bent downwards mainly because the lower part needs to hang the plastering platform 13, and the upper part is pressed with the rotary distributing machine 41. The central cylinder 32 can be a cylindrical cage welded by steel pipes and section steel, the upper end and the lower end of the central cylinder are provided with section steel frames, and the middle of the central cylinder is provided with vertical steel pipes which are arranged at intervals along the circumference of the cylinder wall.
The material distributing platform 12 is provided with a rotary material distributing machine 41 which can rotate around the central axis of the central cylinder 32. In addition, a concrete vibrator is also provided on the distribution platform 12.
The lifting frame 21 comprises a cross rod which extends from the support rod 23 to the material distribution platform 12 in a horizontal direction and is used for bearing the penetrating jack 22, and a vertical rod which extends vertically and downwards from one end of the cross rod close to the material distribution platform 12 and is used for connecting the template 31, wherein the cross rod is fixedly connected with the vertical rod; the ligature platform 11 is erected on the cloth platform 12 through the vertical steel pipe that sets up along 12 circumference intervals of cloth platform, and each vertical steel pipe upwards extends the upper surface that surpasss ligature platform 11, and the part that vertical steel pipe is located ligature platform 11 top is connected through horizontal steel pipe for the multilayer frame that is used for categorised putting the reinforcing bar.
The vertical rods are steel sections, have elasticity and can further provide prestress for the shoring template 31.
The template 31 is enclosed to form a reducer cylinder structure with a thick upper part and a thin lower part, and the tangent value of the included angle between the generatrix of the reducer cylinder and the vertical line is 0.002-0.003. This inclination enables climbing without first stripping while ensuring that the lining of the shaft is not deformed to the naked eye.
A position higher than the through jack 22 on the supporting rod 23 is detachably fixed with a stopper 24 for marking the end point of each extension of the through jack 22, a laser swinger for ensuring that the stoppers 24 are at the same height is arranged on the material distribution platform 12, and a control station of the through jack 22 is arranged on the material distribution platform 12. When the climbing formwork climbs each time, the penetrating jack 22 needs to be extended and shortened for several times, and when the penetrating jack 22 is extended, the whole climbing formwork construction system is driven to climb upwards for a small section. Before the center-penetrating jack 22 extends, the laser swinger is used for determining the position of the stopper 24, and after the stopper 24 is installed, the stopper is extended. The stopper 24 here is a hoop that is hooped on the support bar 23.
In this embodiment, the penetrating jack 22 is a GYD-60 type ball penetrating hydraulic jack, the supporting rod 23 is a phi 48 × 3.5mm steel pipe which is purchased in cooperation with the penetrating jack 22, and the two form a matched creeping formwork power device which can be purchased directly in a set. Two adjacent steel pipes are in threaded connection, the lengths of the steel pipes are 4, 4.5, 5 and 6m respectively, and the height positions of the joints of the support rods 23 are staggered as far as possible. The control station is a YKD-36 type hydraulic control station.
A laser is arranged at the bottom of the vertical shaft, a target plate with a target ring facing downwards is horizontally arranged at the bottom of the central cylinder 32, and only when the center of the bottom of the central cylinder 32 is positioned on the central axis of the vertical shaft, laser emitted by the laser penetrates through an avoiding port on the plastering platform 13 and vertically faces upwards to a target center of the target plate on the lower surface of the central cylinder 32, so that whether the bottom of the central cylinder 32 deviates or not can be judged; a plumb 35 with a downward tip is hung in the central cylinder 32, a target plate fixedly connected with the central cylinder 32 is arranged at a position below the plumb 35 in the central cylinder 32, and only when the central cylinder 32 is in a vertical state, the tip of the plumb 35 vertically points downwards to the target on the target plate in the central cylinder 32, so that whether the central cylinder 32 inclines or not can be judged. In combination, whether the central cylinder 32 is coaxial with the vertical shaft can be monitored, and the position and the posture of the central cylinder 32 can be adjusted by adjusting the length of the tension connecting piece 34, so that the central cylinder 32 is coaxial with the vertical shaft, the accurate position of the template 31 is ensured, and the pouring quality is ensured. The process of measuring alignment and adjusting the tensioning connection 34 is performed on the troweling platform 13.
Horizontal reinforcing plates for reinforcing the capacity of the central cylinder 32 for resisting horizontal centripetal pressure are arranged in the central cylinder 32 at intervals along the vertical direction, and the plastering platform 13 is hung below the distributing platform 12 through hanging posts anchored below the central cylinder 32. The horizontal reinforcing plate is a steel plate, and as shown in fig. 1, the plumb 35 is hung under the lowest horizontal reinforcing plate, and the target plate is disposed on the steel frame at the lower end of the center tube 32. In this embodiment, only one horizontal reinforcing plate is provided.
The rotary distributing machine 41 comprises a hopper erected on the distributing platform 12 through a rotary support column, chutes for injecting concrete falling into the hopper into the template 31 are radially arranged on the periphery of the hopper, a concrete pump pipe 42 for feeding the rotary distributing machine 41 is arranged in the vertical shaft, the concrete pump pipe 42 is spliced upwards section by section from the bottom of the vertical shaft and is communicated with the hopper, and the concrete pump pipe 42 is fixed on the wall of the vertical shaft. The rotary support is rotated by a thrust bearing, and the bottom of the chute is arranged on the material distribution platform 12 in a sliding way through a supporting trolley.
Here the concrete spreader generally cannot rotate 360 degrees because in a practical use scenario there are various obstacles between the chutes, such as concrete pump pipes 42, such as the lifting frame 21, such as hydraulic equipment. But due to the existence of the chutes which are radially arranged, the distribution can be completed without rotating 360 degrees. Generally speaking, 6 chutes are arranged to ensure that a concrete distributor completes distribution under the condition that an obstacle exists, and at this time, the lower ends of the chutes still cannot sweep all positions of a pouring bin, but the unscanned areas are small, and can be compensated by the flowability of concrete and subsequent vibration.
The upper end of the chute is hinged with the hopper to form a structure capable of lifting and lowering the lower end of the chute. The advantages of this are three-fold, one of which is that the chute can be lifted and lowered to adapt to shafts of different diameters, and particularly can be raised or lowered by a concrete spreader; secondly, the concrete in the chute can be shaken off; and thirdly, the utility model can be folded to facilitate transportation.
The chute is connected with the hopper through a chute support rod, the chute support rod is anchored at the bottom of the chute in parallel with the chute, the upper end of the chute is hinged with the hopper, the lower end of the chute is arranged on an installation base surface through a support trolley frame, and the advancing direction of the support trolley is a circle arranged around the hopper support frame. The upper end of the supporting column is hinged with the hopper through the double lug plates and the pin shaft, and the lower end of the supporting column is hinged with the supporting trolley through the double lug plates and the pin shaft parallel to the pin shaft at the upper end, so that the wheels of the supporting trolley at the lower end can be ensured to smoothly contact with the installation foundation after the chute is lifted.
The concrete pump pipe 42 is a phi 216 multiplied by 3.5mm steel pipe, has a single section length of 3m and is connected by flange plate bolts. The concrete pump pipe 42 is installed at a position 50-75 cm away from an excavation surface, the concrete pump pipe 42 is safely fixed, the middle of the concrete pump pipe 42 is horizontally and transversely fixed with the well-shaped frame plate buckle, and the layer height interval is 2m and one ring. In order to safely fix the concrete pump pipe 42, the horizontal transverse connecting steel pipe and the poured concrete are tightly propped by flexible cotton. In order to avoid blockage caused by the fact that over-diameter stones enter the pump pipe, a feed inlet at the lower part of the concrete pump pipe 42 is welded into a grid net filter material with the thickness of 10cm multiplied by 10cm by using phi 12 round steel. And each time the creeping formwork climbs for 3m, a section of pump pipe is installed, and a constructor can stand on the material distribution platform 12 to operate.
That is, the shaft relies on concrete supply from the bottom of the well so that it is not necessary to install the concrete pump pipe 42 in advance. The shaft is not a separate well, but the bottom of the well is provided with structures such as communication channels, cross channels, etc. from which concrete can be pumped into the shaft.
The top formwork frame beam 33 is a bailey truss beam, and a formwork 31 position adjuster for adjusting the distance between the formwork 31 and the shaft wall is arranged between the formwork 31 and the lifting frame 21. The template 31 position adjuster may be a spacer or a bolt perpendicular to the template 31.
The length is conveniently adjusted to the bailey truss, and the chute is articulated can adjust the end of encorbelmenting of chute and the distance of pouring the storehouse, and the two combines to ensure that the concrete effectively puts in storage and adapts to not unidimensional shaft.
A lifting cage used for conveying construction materials and providing for workers to go up and down the main working platform is arranged in the position, higher than the creeping formwork construction system, of the shaft, and a crawling ladder is arranged between every two adjacent main working platforms. The edge of the material distribution platform 12 is provided with a guardrail and a safety net, and the other two main working platforms do not need to be provided with the guardrail and the safety net, because the edge is completely sealed by the template 31, nothing can fall off, and the template is not removed in the construction process. No guardrail or safety net is arranged, so that no problem exists in safety, and convenience is brought to the movement of constructors.
The application method of the efficient vertical shaft creeping formwork construction system is used for pouring the vertical shaft lining, and comprises the following steps:
the method comprises the following steps: dividing the shaft lining into a plurality of construction sections, recording the construction section at the bottommost as a first section, gradually increasing the labels of the construction sections from bottom to top, and completing the first section; when the first section is poured, the section top at the lowest end of the support rod 23 is supported at the bottom of the shaft and is semi-buried in the first section
Step two: assembling the creeping formwork construction system at the bottom of the vertical shaft;
each of the following components is detachably connected with the rest components through bolts: binding a platform 11, a material distribution platform 12, a plastering platform 13, a lifting frame 21, a through jack 22, a template 31, a central cylinder 32, a top template frame beam 33 and a tensioning connecting piece 34; after the construction is finished and the lining construction is finished, cutting off the support rods 23 and the reinforcing steel bars which are higher than the ground, using the position regulator of the template 31 to finish the die stripping, and lifting out of the creeping formwork construction system for disassembly and storage for the next use;
step three: recording the construction section right opposite to the template 31 as an Nth section, finishing plastering and curing the Nth-1 section, pouring concrete of the N sections, and binding a reinforcement cage of the (N + 1) th section; when concrete is poured, the bottom of the side surface of the template 31 is attached to the N-1 section;
the reinforcement cage for binding is mainly a reinforcement cage of a civil air defense section of a vertical shaft lining, and other positions are plain concrete, so that when the position opposite to the binding platform 11 is the plain concrete, constructors on the binding platform 11 can help other main construction platforms;
step four: after the concrete poured in the step three is initially set, climbing a section by the creeping formwork construction system; after climbing is completed, the position of the central cylinder 32 is adjusted to be coaxial with the vertical shaft again;
step five: and circularly performing the third step and the fourth step until the construction of the whole shaft lining is completed.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (10)
1. An efficient shaft creeping formwork construction system is used for constructing a shaft lining in a shaft from bottom to top; the method is characterized in that: the concrete plastering device comprises three main working platforms which are horizontally arranged, vertically overlapped, fixedly connected into a whole and used for bearing constructors to operate, wherein the main working platforms sequentially comprise a binding platform (11) used for binding steel bars, a distributing platform (12) used for pouring concrete and a plastering platform (13) used for plastering concrete from top to bottom;
the cloth platform (12) is provided with lifting frames (21) fixedly connected with the cloth platform (12) at intervals along the edge of the cloth platform (12) around the cloth platform (12), a climbing formwork power device is arranged on each lifting frame (21), each climbing formwork power device comprises a through jack (22) which corresponds to each lifting frame (21) one by one and is fixedly connected with each lifting frame (21), and a support rod (23) which corresponds to each through jack (22) one by one and is vertically arranged in each through jack (22), each support rod (23) is formed by splicing and fixedly connecting a plurality of subsections from bottom to top one by one, and the lower part of each support rod (23) is embedded in a vertical shaft lining;
the hoisting frame (21) extends downwards and exceeds the lower edge of the distributing platform (12), and a template (31) of the vertical shaft lining is sleeved on the periphery of the hoisting frame (21) and is fixedly connected with the hoisting frame (21); a central cylinder (32) fixedly connected with the distributing platform (12) is vertically arranged in the center of the bottom of the distributing platform (12), the central cylinder (32) is an elastic cylinder capable of resisting centripetal pressure and centrifugal tension in the horizontal direction, top mold frame beams (33) radially arranged by taking the central cylinder (32) as the center are arranged at the top of the side surface of the central cylinder (32), the top mold frame beams (33) are supported below the distributing platform (12) and are in one-to-one correspondence with the lifting frames (21), one ends of the top mold frame beams are fixedly connected with the side surface of the central cylinder (32), and the other ends of the top mold frame beams are fixedly connected with the corresponding lifting frames (21); the bottom of the central cylinder (32) is also provided with tensioning connecting pieces (34) which are radially arranged by taking the central cylinder (32) as a center and used for adjusting the verticality of the central cylinder (32) and avoiding the middle part of the distributing platform (12) from downwarping, the tensioning connecting pieces (34) are telescopic rods or length-adjustable ropes, two ends of each tensioning connecting piece (34) are respectively connected with the bottom of the side surface of the lifting frame (21) and the bottom of the side surface of the central cylinder (32), and each lifting frame (21) is at least connected with one tensioning connecting piece (34);
the material distribution platform (12) is provided with a rotary material distributor (41) which can rotate around the central axis of the central cylinder (32).
2. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: the lifting frame (21) comprises a cross rod which extends from the support rod (23) to the material distribution platform (12) in a horizontal direction and is used for bearing the piercing jack (22), and a vertical rod which extends from one end, close to the material distribution platform (12), of the cross rod in a vertical and downward direction and is used for connecting the template (31), and the cross rod is fixedly connected with the vertical rod; the binding platform (11) is erected on the material distribution platform (12) through vertical steel pipes arranged at intervals along the circumferential direction of the material distribution platform (12), each vertical steel pipe upwards extends to exceed the upper surface of the binding platform (11), and the parts, located above the binding platform (11), of the vertical steel pipes are connected through horizontal steel pipes to form a multi-layer frame for placing the steel bars in a classified mode.
3. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: the template (31) is enclosed to form a reducer cylinder structure with a thick upper part and a thin lower part, and the tangent value of the included angle between the generatrix of the reducer cylinder and the vertical line is 0.002-0.003.
4. The efficient shaft creeping formwork construction system according to claim 1, wherein: a position higher than the center-penetrating jack (22) on the supporting rod (23) is detachably fixed with a stopper (24) for marking the end point of each extension of the center-penetrating jack (22), a laser swinger for ensuring that the stopper (24) is positioned at the same height is arranged on the material distribution platform (12), and a control station of the center-penetrating jack (22) is arranged on the material distribution platform (12).
5. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: the laser is arranged at the bottom of the vertical shaft, a target plate with a target ring facing downwards is horizontally arranged at the bottom of the central cylinder (32), and when the center of the bottom of the central cylinder (32) is located on the central axis of the vertical shaft, laser emitted by the laser penetrates through a clearance hole in the floating platform (13) and vertically faces upwards to the target center of the target plate on the lower surface of the central cylinder (32).
6. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: a plumb bob (35) with a downward pointed part is hung in the central cylinder (32), a target plate fixedly connected with the central cylinder (32) is arranged at the position below the plumb bob (35) in the central cylinder (32), and when the central cylinder (32) is in a vertical state, the pointed part of the plumb bob (35) vertically points downwards to the target center on the target plate in the central cylinder (32).
7. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: the central cylinder (32) is a cylindrical cage and comprises section steel frames at the upper end and the lower end and vertical steel pipes arranged at the cylinder wall of the central cylinder (32) at intervals along the circumferential direction of the central cylinder (32), and horizontal reinforcing plates used for reinforcing the capacity of the central cylinder (32) for resisting horizontal centripetal pressure are arranged in the central cylinder (32) at intervals along the vertical direction.
8. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: rotatory cloth machine (41) include and erect the hopper on cloth platform (12) through rotatory pillar, hopper a week is radially to be provided with and is used for injecting the concrete that falls into the hopper into the chute in template (31), be provided with in the shaft and be used for concrete pump pipe (42) for rotatory cloth machine (41) feed, concrete pump pipe (42) make progress the amalgamation and lead to the hopper from the shaft bottom gradually festival, concrete pump pipe (42) are fixed on the wall of a shaft.
9. An efficient shaft creeping formwork construction system according to claim 8, characterised in that: the top formwork frame beam (33) is a Bailey truss beam, the upper end of the chute is hinged with a discharge hole of the hopper and forms a structure capable of lifting the overhanging end of the chute, and a formwork (31) position regulator used for regulating the distance between the formwork (31) and the shaft wall is arranged between the formwork (31) and the lifting frame (21).
10. An efficient shaft creeping formwork construction system according to claim 1, characterized in that: a suspension cage used for conveying construction materials and supplying workers to go up and down main working platforms is arranged in the position, higher than the creeping formwork construction system, in the shaft, a crawling ladder is arranged between every two adjacent main working platforms, and a guardrail and a safety net are arranged at the edge of the cloth platform (12).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117365079A (en) * | 2023-12-05 | 2024-01-09 | 上海建工一建集团有限公司 | Large-creepage-distance steel column cylinder frame alternately supporting integral climbing steel platform formwork |
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| CN117365079A (en) * | 2023-12-05 | 2024-01-09 | 上海建工一建集团有限公司 | Large-creepage-distance steel column cylinder frame alternately supporting integral climbing steel platform formwork |
| CN117365079B (en) * | 2023-12-05 | 2024-02-02 | 上海建工一建集团有限公司 | Large-creepage-distance steel column cylinder frame alternately supporting integral climbing steel platform formwork |
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| Publication number | Publication date |
|---|---|
| CN114542079B (en) | 2022-08-02 |
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