CN113860140A - Hoisting device and method for glass fiber reinforced bar structure - Google Patents
Hoisting device and method for glass fiber reinforced bar structure Download PDFInfo
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- CN113860140A CN113860140A CN202111145856.4A CN202111145856A CN113860140A CN 113860140 A CN113860140 A CN 113860140A CN 202111145856 A CN202111145856 A CN 202111145856A CN 113860140 A CN113860140 A CN 113860140A
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- 238000000034 method Methods 0.000 title claims abstract description 36
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- 239000010959 steel Substances 0.000 claims abstract description 96
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 46
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- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 25
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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Abstract
The invention relates to a hoisting device and a method for a glass fiber reinforced bar structure, which are used for hoisting a reinforcing cage formed by lapping a plurality of reinforcing bars and glass fiber bars, wherein the glass fiber reinforced bar structure comprises a fixed rope spirally wound on the connecting part of the reinforcing bars and the glass fiber bars, and a first clamping piece and a second clamping piece which are arranged at the two ends of the fixed rope and connected with the fixed rope, and the device is characterized by comprising: the first hoisting device at least comprises a pulley assembly and a lifting rope assembly, and is configured to be connected with lifting points of a plurality of lifting point groups at one end of the longitudinal direction of the steel reinforcement cage through the pulley assembly and the lifting rope assembly; and the second hoisting device at least comprises a pulley assembly and a lifting rope assembly, and is configured to be connected with the lifting points of the rest lifting point groups at the other end of the longitudinal direction of the steel reinforcement cage through the pulley assembly and the lifting rope assembly.
Description
Technical Field
The invention relates to the technical field of hoisting construction of reinforcement cages, in particular to a hoisting device and method for a glass fiber reinforced plastic reinforcement structure.
Background
In the process of excavating a tunnel by the shield tunneling machine, an underground continuous wall is required to be arranged to protect the side walls of the starting vertical shaft and the receiving vertical shaft and prevent the side walls of the starting vertical shaft and the receiving vertical shaft from collapsing, but the shield tunneling machine also needs to penetrate through the underground continuous wall, and the underground continuous wall is a continuous reinforced concrete wall built underground by foundation engineering and serves as a structure for intercepting water, preventing seepage, weighing and retaining water.
In the process of constructing the underground continuous wall, a long and narrow deep groove is excavated along the peripheral axis of a deep excavation project on the ground by adopting a grooving machine, a reinforcement cage is hoisted in the groove after the groove is cleared, and then underwater concrete is poured along the reinforcement cage by using a guide pipe method, so that an underground continuous groove is constructed.
The glass fiber reinforcement is widely applied to the concrete precast pile due to light weight, high strength and good anti-pulling performance, the glass fiber reinforcement is usually matched with a steel bar to be used for manufacturing a steel bar cage in the concrete precast pile, the glass fiber reinforcement is generally connected with the steel bar in a steel wire bundling mode, and the steel wire at the bundling part is easy to break in the centrifugal forming and vibration process of the concrete precast pile, so that the connection reliability between the glass fiber reinforcement and the steel bar is difficult to guarantee.
CN111734417A discloses a connection structure of a glass fiber reinforcement and a steel bar and a construction process of the glass fiber reinforcement, which comprises a binding rope wound at the connection part of the steel bar and the glass fiber reinforcement and U-shaped clamps arranged at two ends of the binding rope; the binding rope is spirally wrapped at the joint of the steel bar and the glass fiber bar, and the two ends of the binding rope are respectively connected with the two U-shaped clamps. The invention has the advantages of better binding and fixing the joint of the steel bar and the glass fiber bar and avoiding the dislocation of the steel bar and the glass fiber bar.
The prior art discloses a connection structure of a glass fiber reinforcement and a steel bar, but the specific arrangement manner between the glass fiber reinforcement and the steel bar is not limited too much, for example, when the glass fiber reinforcement and the steel bar are connected and fixed by a binding rope, how the binding rope is wound on the glass fiber reinforcement and the steel bar, which angle the binding rope forms with the glass fiber reinforcement and the steel bar, etc., because this will further affect the overall stability of the reinforcement cage formed by the lap joint in the subsequent hoisting process, and the strength of the underground continuous wall cast by the reinforcement cage, for example, when the reinforcement cage is vertically hoisted, if the stability of the connection part is not enough, the reinforcement bar located relatively below will drive the steel bar above the reinforcement cage to move due to the action of gravity or the relative movement/sliding between the adjacent connected reinforcement bars will cause the structural stability of the reinforcement cage to be affected, secondly, when the shield machine passes through the underground continuous wall to break the glass fiber ribs at the shield tunnel portal, the glass fiber ribs are broken due to the impact force from the shield machine in the transverse direction, in the process, the glass fiber reinforced plastic at the stressed part can generate pulling force or torsion force to the reinforcing steel bars at the two sides, if the fastening performance of the connecting part is not enough, the reinforcing steel bars or the glass fiber reinforced plastics can be separated, the stability of the reinforcing cage and the plain concrete wall is influenced, the normal running of the shield machine is influenced, or the steel reinforcement cage is deformed due to improper torque control of the connection part of the steel reinforcement and the glass fiber reinforcement, and the like, when the glass fiber reinforcements near the shield tunnel portal are damaged, the structural stability and the bearing capacity of the whole reinforcement cage and the plain concrete wall in the longitudinal direction cannot be greatly changed, otherwise the construction is influenced and serious consequences are caused, so that the connection mode between the reinforcement and the glass fiber reinforcements is very important; in addition, when hoisting the steel reinforcement cage, the hoisting point is connected through the hoisting rope to hoist the steel reinforcement cage to a certain height, then the hoisting equipment is operated to convert the steel reinforcement cage from the horizontal state to the vertical state, then the hoisting point is switched when the steel reinforcement cage is in the vertical state, and then the steel reinforcement cage is hoisted and placed in the vertical state. And because the glass fiber reinforcement material is more fragile, consequently in the in-process of hoist and mount steel reinforcement cage, the problem of fracture, deformation appears easily, especially the connection position of glass fiber reinforcement and reinforcing bar. Thus, there remains a need in the art for at least one or several aspects of improvement.
Furthermore, on the one hand, due to the differences in understanding to the person skilled in the art; on the other hand, since the applicant has studied a great deal of literature and patents when making the present invention, but the disclosure is not limited thereto and the details and contents thereof are not listed in detail, it is by no means the present invention has these prior art features, but the present invention has all the features of the prior art, and the applicant reserves the right to increase the related prior art in the background.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a hoisting device and a hoisting method for a glass fiber reinforced plastic bar structure, and aims to solve at least one or more technical problems in the prior art.
In order to achieve the above object, the present invention provides a hoisting device and method for a glass fiber reinforced plastic bar structure, which is used for hoisting a reinforcement cage formed by overlapping a plurality of steel bars and glass fiber reinforced plastic bars, wherein the glass fiber reinforced plastic bar structure comprises a fixing rope spirally wound around a connection part of the steel bars and the glass fiber reinforced plastic bars, and a first clamping member and a second clamping member arranged at two ends of the fixing rope and connected with the fixing rope, the device comprises: the first hoisting device at least comprises a pulley assembly and a lifting rope assembly, and is configured to be connected with lifting points of a plurality of rows of lifting point groups at one end of the longitudinal direction of the steel reinforcement cage through the pulley assembly and the lifting rope assembly; and the second hoisting device at least comprises a pulley assembly and a lifting rope assembly, and is configured to be connected with the lifting points of the rest lifting point groups at the other end of the longitudinal direction of the steel reinforcement cage through the pulley assembly and the lifting rope assembly.
Preferably, the first hoisting device comprises a first hook, a first lifting rope, a second lifting rope, a first main pulley, a first secondary pulley and a first shoulder pole beam.
Preferably, the first hook and the first main pulley are connected to the first shoulder pole beam, one end of a first lifting rope disposed on the first main pulley is connected to the first lifting point group of the reinforcement cage, and the other end thereof is connected to the first auxiliary pulley, one end of a second lifting rope disposed on the first auxiliary pulley is connected to the second lifting point group of the reinforcement cage, and the other end thereof is connected to the third lifting point group of the reinforcement cage;
preferably, the second hoisting device includes a second hook, a third lifting rope, a second secondary pulley, and a second shoulder pole beam, wherein the second hook and the second secondary pulley are connected to the second shoulder pole beam, one end of the third lifting rope disposed on the second secondary pulley is connected to the fourth lifting point group of the steel reinforcement cage, and the other end of the third lifting rope is connected to the fifth lifting point group of the steel reinforcement cage.
Preferably, the reinforcement cage is provided with a longitudinal truss and a transverse truss, and the multiple rows of hoisting point groups are arranged on the longitudinal truss and/or the transverse truss.
Preferably, the positions of the multiple rows of hoisting point groups are configured at the position where the bending moment or torque generated when the reinforcement cage is hoisted is minimum, and the multiple hoisting points of the multiple rows of hoisting point groups are on the same straight line.
Preferably, first fastener and second fastener centre gripping are on reinforcing bar and glass fiber muscle, and wherein, first fastener and second fastener include block pole and the block board of can dismantling the connection with the block pole, and the both ends that pass the block board of block pole are fixed in block board one side through the fastener.
Preferably, a plurality of fixing holes are formed at two ends of the engaging plate of the first engaging member and/or the second engaging member, wherein the fixing holes are disposed on an edge surface of the engaging plate close to one side of the fixing rope, so that the fixing rope spirally wound around the connecting portion of the steel bar and the glass fiber reinforced plastic bar can be connected with the first engaging member and/or the second engaging member in a manner that the two ends of the fixing rope pass through the fixing holes.
Preferably, a plurality of third fixing pieces sleeved on the reinforcing steel bars and the glass fiber reinforced plastic bars are arranged between the first clamping piece and the second clamping piece, and the third fixing pieces at least comprise two fixing plates which are opposite to each other and detachably connected.
Preferably, the side wall surfaces of the two fixing plates opposite to each other are provided with pressure relief pads having a first inwardly recessed surface and a second non-inwardly recessed surface different from each other.
Preferably, the first surface is configured to be the same as the shape, the inclination angle and the extending direction of the protrusions on the surface of the steel bar and/or the glass fiber bar, so that when the steel bar and the glass fiber bar are bound and fixed through the fixing rope, the first surface and the protrusions on the surface of the steel bar and/or the glass fiber bar can be matched with each other in shape to be tightly attached.
Preferably, when the first surface of the pressure-reducing pad is matched with the protrusions on the surface of the steel bar and/or the glass fiber bar, the second surface which is not concave inwards can be embedded in the channel formed by the adjacent protrusions of the steel bar and/or the glass fiber bar, so that the fixing rope is tightly pressed inside the channel formed by the adjacent protrusions of the steel bar and/or the glass fiber bar.
Preferably, the hoisting method of the glass fiber reinforced plastic bar structure is used for hoisting a steel bar cage formed by overlapping a plurality of steel bars and glass fiber reinforced plastic bars, the glass fiber reinforced plastic bar structure comprises a fixing rope spirally wound on the connecting part of the steel bars and the glass fiber reinforced plastic bars, and a first clamping piece and a second clamping piece which are arranged at the two ends of the fixing rope and connected with the fixing rope, and is characterized in that,
a plurality of rows of lifting point groups comprising a plurality of lifting points are arranged along the longitudinal direction of the reinforcement cage, and the plurality of lifting points of each row of lifting point groups are collinear;
arranging a first crane and a second crane, wherein the first crane is connected with hoisting points of a plurality of rows of hoisting point groups in the longitudinal direction of the reinforcement cage through a first hoisting device, and the second crane is connected with the hoisting points of the other hoisting point groups in the longitudinal direction of the reinforcement cage through a second hoisting device;
simultaneously hoisting the first crane and the second crane to hoist the reinforcement cage to a preset height in a horizontal posture;
driving the second crane to rotate or translate to one side in a mode of keeping the reinforcement cage to move in a horizontal state, and simultaneously driving the reinforcement cage to move in a direction of driving the reinforcement cage to be in a vertical state by the first crane;
disconnecting the second crane from the hoisting point of the reinforcement cage;
and the reinforcement cage is lowered into the groove in a vertical state through a first crane.
Preferably, one end of a first lifting rope of the first lifting device is connected to the first lifting point group, and the other end of the first lifting rope is connected to the first main pulley of the first lifting device, and one end of a second lifting rope arranged on the first main pulley is connected to the second lifting point group of the reinforcement cage, and the other end of the second lifting rope is connected to the third lifting point group of the reinforcement cage, wherein the first lifting point group and the third lifting point group are located on the same side of the reinforcement cage, and the second lifting point group is located on the opposite side of the reinforcement cage.
Preferably, before the first crane and the second crane are lifted simultaneously to lift the reinforcement cage to the preset height in the horizontal posture, a projection point of a gravity center of the first lifting hook of the first lifting device in the vertical direction and a projection point of the second lifting hook of the second lifting device on a symmetry plane of the reinforcement cage are determined to be positioned on a central axis of the reinforcement cage.
Drawings
Fig. 1 is a schematic structural diagram of a preferred reinforcing steel bar glass fiber reinforced plastic bar structure according to an embodiment of the present invention;
fig. 2 is a preferred connection schematic diagram of a hoisting device for a glass fiber reinforced plastic reinforcement structure according to an embodiment of the present invention;
fig. 3 is a schematic view illustrating a suspension point stress and a bending moment of a reinforcement cage formed of the glass fiber reinforced plastic reinforcement structure shown in fig. 1 in a horizontal state according to an embodiment of the present invention;
FIG. 4 is a schematic partial view of a preferred embodiment of a pressure relief pad according to the present invention;
FIG. 5 is a side view of a preferred embodiment of a pressure relief pad as viewed axially along a rebar or fiberglass reinforcement provided in accordance with the present invention;
fig. 6 is a schematic partial structure diagram of a reinforcing steel bar and a glass fiber reinforced plastic bar secondarily fixed by a fixing rope according to an embodiment of the present invention.
List of reference numerals
10: reinforcing steel bars; 20: a glass fiber rib; 30: fixing a rope; 40 a: a first engaging member; 40 b: a second engaging member; 50: a third engaging member; g1: a first hook; g2: a second hook; p1: a first main pulley; p2: a first secondary pulley; p3: a second counter pulley; s1: a first lifting rope; s2: a second lifting rope; s3: a third lifting rope; d1: a first hoisting point group; d2: a second hoisting point group; d3: a third hoisting point group; d4: a fourth hoisting point group; d5: a fifth hoisting point group; o is1: a first projection point; o is2: a second projection point; 100: a reinforcement cage 100; c1: a first surface; c2: a second surface.
Detailed Description
The following detailed description is made with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are used for indicating the orientation or positional relationship indicated based on the drawings, they are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the invention.
The structure of the reinforcement cage 100 related to the hoisting method and the device of the invention can be used for reinforcement cages 100 with various shapes including but not limited to a shape of one, a shape of T, a shape of L and the like. For convenience of description, the embodiment of the present invention is described by taking the "one" type as an example. Further, the longitudinal direction of reinforcement cage 100 refers to a direction extending along its length, and the transverse direction refers to a direction perpendicular to the longitudinal direction of reinforcement cage 100. The cross-section of reinforcement cage 100 is taken along any point along the longitudinal extent of reinforcement cage 100 that is perpendicular to the longitudinal direction to which the point corresponds.
According to a preferred embodiment, the invention relates to a hoisting device and a method for a glass fiber reinforced plastic bar connecting structure. Further, the invention also comprises a glass fiber reinforced plastic bar connecting structure, as shown in fig. 1. Specifically, the glass fiber reinforced plastic bar connection structure shown in fig. 1 includes at least a steel bar 10 and a glass fiber reinforced plastic bar 20 abutting against each other, and fixing strings 30 are provided on circumferential outer sides of the steel bar 10 and the glass fiber reinforced plastic bar 20. The fixing string 30 is configured to extend in a longitudinal direction of the reinforcing bar 10 and/or the glass fiber reinforced plastic 20 in such a manner as to spirally surround the reinforcing bar 10 and/or the glass fiber reinforced plastic 20 at a circumferential outer side thereof. Preferably, the fixing rope 30 may be a steel rope to provide a certain tensile strength to prevent breakage.
According to a preferred embodiment, as shown in fig. 1, the radially outer side of the reinforcement bar 10 and the glass fiber reinforcement bar 20 has a plurality of thread-like protrusions arranged in the longitudinal direction, which are formed by protruding outward from at least a part of the solid body of the reinforcement bar 10 and/or the glass fiber reinforcement bar 20 and extending in a spiral direction around the axial direction thereof. The thread protrusions can form a channel between each other, when the fixing rope 30 is spirally wound on the outer sides of the steel bar 10 and the glass fiber bar 20 to fix the steel bar 10 and the glass fiber bar 20, the fixing rope 30 can be clamped in the channel to increase the contact area between the fixing rope 30 and the steel bar 10 and the glass fiber bar 20, so that the connection and fixing effect of the fixing rope 30 on the steel bar 10 and the glass fiber bar 20 is enhanced; make simultaneously when fixing rope 30 block in the channel inside, fixed rope 30 can with adjacent be located reinforcing bar 10 and the mutual joint of screw thread arch on glass fiber reinforcement 20 surface, prevent reinforcing bar 10 and glass fiber reinforcement 20's relative displacement to make the connection between reinforcing bar 10 and the glass fiber reinforcement 20 more firm.
According to a preferred embodiment, when the reinforcement 10 and the fiberglass reinforcement 20 are bound together, it is generally necessary to align the reinforcement 10 and the fiberglass reinforcement 20, for example, with their respective central axes in a same line or plane, and the overlap length between the reinforcement 10 and the fiberglass reinforcement 20 is generally limited by the length, i.e., the ends of the reinforcement 10 and the fiberglass reinforcement 20 are offset by a certain distance (e.g., 2 m).
According to a preferred embodiment, as shown in fig. 1, both ends of the fixing cord 30 in the extending direction thereof are provided with a first engaging piece 40a and a second engaging piece 40b, respectively. The first engaging member 40a and the second engaging member 40b are identical in structure. The first engaging member 40a and the second engaging member 40b are clamped on the reinforcing bar 10 and the glass fiber reinforced plastic 20. Specifically, the first engaging member 40a and the second engaging member 40b include a substantially U-shaped engaging rod 401 and an engaging plate 402 detachably connected to the engaging rod 401. Further, through holes matched with the diameter of the clamping rod 401 are formed in the two end surfaces of the clamping plate 402, so that the two ends of the clamping rod 401 can penetrate through the clamping plate 402, and the clamping rod 401 and the clamping plate 402 can be connected and fixed through nuts. Preferably, when the reinforcing bar 10 and the glass fiber bar 20 are fixed by the first engaging piece 40a and the second engaging piece 40b, the reinforcing bar 10 should be attached to the inside of the substantially U-shaped engaging rod 401, and the glass fiber bar 20 should be attached to the outside of the engaging rod 401.
According to a preferred embodiment, as shown in fig. 1, a plurality of fixing holes (not labeled) are opened at both ends of the engaging plate 402 and on the edge surface near one side of the fixing rope 30, and both ends of the fixing rope 30 can sequentially pass through the plurality of fixing holes to fix the fixing rope 30 outside the steel bar 10 and the glass fiber reinforced plastic 20 through the engaging plate 402. Preferably, when the fixing rope 30 is wound around the reinforcing steel bar 10 and the glass fiber reinforced plastic bar 20, the fixing rope 30 is usually bound along the running direction of the threaded protrusions, that is, the fixing rope 30 is clamped into the groove between the adjacent threaded protrusions.
According to a preferred embodiment, in the embodiment of the present invention, one end of the fixing rope 30 continuously winds through the fixing hole on one side of the engaging plate 402 of the first engaging member 40a, and the other end starts from one end (for example, the left side in fig. 1) of the steel bar 10 and the glass fiber bar 20, spirally surrounds the channel of the steel bar 10 and the glass fiber bar 20 along the axial extension of the steel bar 10 and the glass fiber bar 20 in a manner of fitting into the channel, and passes through the fixing hole on the corresponding engaging plate 402 when reaching the second engaging member 40b on the other end (for example, the right side in fig. 1) of the steel bar 10 and the glass fiber bar 20. Further, the fixing rope 30 passes through one end of one side fixing hole of the engaging plate 402 of the second engaging member 40b and continues to extend to pass through the fixing hole on the other side of the engaging plate 402, so as to continue to surround the reinforcing steel bar 10 and the glass fiber reinforcement 20 in a reverse spiral manner along the axial direction of the reinforcing steel bar 10 and the glass fiber reinforcement 20, and when reaching the first engaging member 40a, passes through the fixing hole on the other side of the engaging plate 402 of the first engaging member 40a to fix the fixing rope 30, and for strengthening the firmness, two ends of the fixing rope 30 passing through the fixing holes on two sides of the first engaging member 40a may be welded to the engaging plate 402 or welded to each other, that is, the fixing rope 30 is finally wound on the reinforcing steel bar 10 and the glass fiber reinforcement 20 in a substantially X-shaped manner. Preferably, through this kind of winding mode, can carry out the secondary to reinforcing bar 10 and glass fiber reinforcement 20 and fix to reinforcing bar glass fiber reinforcement structure's stability avoids axial and footpath relative displacement between the two. Specifically, at least a part of the fixing ropes 30 are first connected and fixed in a manner of fitting into the grooves on the surfaces of the steel bar 10 and the glass fiber reinforced plastic bar 20, and then another part of the fixing ropes 30 are used to fix at least a part of the fixing ropes 30 in a reverse spiral encircling manner, i.e. the fixing ropes 30 for the secondary fixing are not in the same direction as the thread protrusions, but are in a staggered posture with each other or have an acute angle α with each other (as shown in fig. 1) with the fixing ropes 30 for the primary fixing, so that at least a part of the ropes of the fixing ropes 30 for the secondary fixing along the circumferential direction of the steel bar 10 and the glass fiber reinforced plastic bar 20 can be fitted into the fixing ropes 30 for the primary fixing in the grooves of the steel bar 10 and the glass fiber reinforced plastic bar 20, respectively (as shown in fig. 5). Preferably, this way, it is possible to make more turns around, thereby enhancing the stability between the reinforcing bars 10 and the glass fiber reinforced plastic bars 20, while reinforcing the fixing string 30 for one-time fixing in the channel, so as to further increase the stability between the reinforcing bars 10 and the glass fiber reinforced plastic bars 20.
According to a preferred embodiment, when the fixing rope 30 is fixed in the forward direction, the fixing rope 30 is attached to the grooves on the surfaces of the steel bar 10 and the glass fiber reinforcement 20, when the steel bar 10 and the glass fiber reinforcement 20 move relative to each other in the axial direction and/or the radial direction to generate a tendency of relative separation (i.e. moving towards both sides) or approaching (i.e. moving towards the middle), the thread protrusions on the surfaces of the steel bar 10 and the glass fiber reinforcement 20 have a certain inclination angle, so that a certain clamping effect can be achieved between adjacent protrusions and grooves on the surfaces when the steel bar 10 and the glass fiber reinforcement 20 are separated relative to each other, and meanwhile, the fixing rope 30 can conform to the clamping effect between the adjacent protrusions and grooves to further prevent the steel bar 10 and the glass fiber reinforcement 20 from being separated relative to each other; on the other hand, when the fixing ropes 30 are reversely fixed, the fixing ropes 30 and the protrusions or grooves on the surfaces of the steel bars 10 and the glass fiber bars 20 have certain blocking effect when preventing the steel bars 10 and the glass fiber bars 20 from moving relative to each other in the axial direction and/or the radial direction, and at this time, the fixing ropes 30 are secondarily fixed on the surfaces of the steel bars 10 and the glass fiber bars 20 in a way of not conforming to the grooves and crossing the fixing ropes 30 which are primarily fixed or having an acute angle α, and firstly, the movement of the steel bars 10 and the glass fiber bars 20 relative to each other in the axial direction and/or the radial direction is reduced or prevented; meanwhile, the fixing rope 30 which is positioned at the inner side and fixed for the first time is reinforced, so that the stabilizing effect of the fixing rope 30 which is fixed for the first time on the reinforcing steel bar 10 and the glass fiber reinforced plastic bar 20 is further enhanced, based on the winding mode of the fixing rope 30 which is fixed for the reverse direction, at least part of the fixing rope 30 which is positioned on the same cross section of the fixing rope 30 which is wound for the reverse direction is covered on the fixing rope 30 which is fixed for the forward direction, and at least part of the fixing rope 30 which is positioned on the same cross section can be respectively covered on the fixing rope 30 which is fixed for the forward direction in the channel of the reinforcing steel bar 10 and the glass fiber reinforced plastic bar 20; in addition, the two ends of the fixing rope 30 are connected to or both connected to the first engaging member 40a, so as to further fasten the first engaging member 40a and the second engaging member 40b, thereby enhancing the fastening effect of the reinforcing steel bar 10 and the glass fiber reinforced plastic bar 20. Preferably, through the connection cooperation of fixed rope 30 and first fastener 40a and second fastener 40b for the connection between reinforcing bar 10 and the glass fiber reinforcement 20 is more firm, and prevents that reinforcing bar 10 and glass fiber reinforcement 20 from producing relative slip/removal each other simultaneously, and then avoids reinforcing cage 100 shaping and hoist and mount in-process to take place deformation, fracture etc. and influence underground continuous wall's quality.
According to a preferred embodiment, as shown in fig. 1, a plurality of third engaging members 50 are disposed between the first engaging member 40a and the second engaging member 40b and are spaced apart from each other in the longitudinal direction to be clamped on the reinforcing bars 10 and the glass fiber bars 20. Specifically, the third engaging member 50 may include two substantially arc-shaped or semicircular fixing plates 501 opposite to each other and fastening bolts 502 provided at both ends of the fixing plates 501. The two fixing plates 501 are fastened to each other to form a substantially circular channel for accommodating the reinforcing bar 10, the glass fiber reinforced plastic 20 and the fixing rope 30, and are connected and fixed by the fastening bolt 502 after the two ends of the fixing plates 501 are attached to each other, so as to fasten the reinforcing bar 10 and the glass fiber reinforced plastic 20, and simultaneously apply a mechanical force to the fixing rope 30 to enable the fixing rope 30 to be more tightly connected with the reinforcing bar 10 and the glass fiber reinforced plastic 20.
According to a preferred embodiment, the side wall surfaces of the two fixing plates 501 opposite to each other may be further provided with a pressure relief pad (not shown in the drawings) having a certain thickness. Preferably, the pressure relief pad can be a rubber pad. On the one hand, slowly press the pad to slow down reinforcing bar 10, when glass fiber muscle 20 and fixed rope 30 and fixed plate 501 contact each other and lean on, reinforcing bar 10, glass fiber muscle 20 and fixed rope 30 are to fixed plate 501's effort, on the other hand, slowly press the pad to make reinforcing bar 10, contact frictional force increase between glass fiber muscle 20 and the fixed plate 50, reduce or avoid reinforcing bar 10, relative slip/removal between glass fiber muscle 20 and the fixed plate 50, thereby can make third joint spare 50 be fixed in on reinforcing bar 10 and the glass fiber muscle 20 more steadily, strengthen reinforcing bar 10 and glass fiber muscle 20's firm effect.
Further, the pressure relief pad has a certain thickness, and the pressure relief pad may be configured to have an inwardly recessed first surface C having the same inclination angle and extending direction as those of the screw thread protrusions on the circumferential outer side surfaces of the reinforcing bars 10 and the glass fiber bars 201So that the decompression pad can pass through the inwardly depressed first surface C on the inner side surface thereof when the reinforcing bar 10 and the glass fiber bar 20 are coupled and fixed by receiving the fixing string 30 into the groove formed by the adjacent thread protrusions in such a manner as to follow the extended path of the thread protrusions on the surfaces of the reinforcing bar 10 and the glass fiber bar 201Is mutually shaped with the thread bulges on the circumferential outer side surfaces of the reinforcing steel bar 10 and the glass fiber bar 20Shaped to fit snugly to further increase the friction between the cushioning pad and the rebar 10 and fiberglass reinforcement 20 to at least reduce or prevent slippage/movement of the rebar 10 and/or fiberglass reinforcement 20 relative to each other; and a first surface C on the inner side of the pressure-relief pad1When the non-concave second surface C at the inner side of the slow-pressing pad is mutually matched with the thread bulges on the circumferential outer side surfaces of the reinforcing steel bar 10 and the glass fiber bar 202Can be engaged with the channel formed by the adjacent protrusions of the steel bar 10 and/or the glass fiber reinforced plastic 20 to simultaneously press the fixing rope 30 into the channel formed by the adjacent protrusions of the steel bar 10 and/or the glass fiber reinforced plastic 20 to prevent the fixing rope 30 from moving/sliding. Further, the fixing string 30 is clamped to the channel of the reinforcing bar 10 and/or the glass fiber reinforced plastic 20 and the second surface C of the cushioning pad2On the first surface C passing through the pressure-relieving pad1And the second surface C of the pressure-relieving pad is matched with the thread protrusions on the circumferential outer side surfaces of the reinforcing steel bar 10 and the glass fiber bar 20 to prevent the reinforcing steel bar 10 and the glass fiber bar 20 from sliding relative to each other2Can be mutually fitted with the channels of the steel bars 10 and/or the glass fiber reinforced plastic bars 20 to prevent the fixing ropes 30 from moving/sliding, so as to further enhance the contact tightness between the fixing ropes 30 and the steel bars 10 and/or the glass fiber reinforced plastic bars 20 to enhance the stability of the connection between the steel bars 10 and the glass fiber reinforced plastic bars 20, and finally enhance the stability of the steel bar cage.
According to a preferred embodiment, when the reinforcing bar 10 and the glass fiber bar 20 are twisted and/or moved relative to each other, the semicircular inner and outer surfaces of the pressure relief pad will be subjected to a force from the reinforcing bar 10 or the glass fiber bar 20 in the tangential direction and in the radial direction of the pressure relief pad, which force will force the pressure relief pad to deform, the force from the edge-carrying reinforcing bar 10 or the glass fiber bar 20 and will pivot about the pivot point axially outside the fixing plate 501 of the third fixing element 50 with the third fixing element 50 having a limited length in the axial direction. The rotation will accumulate elastic potential energy in the area where the reinforcement bar 10 and the glass fiber bar 20 are bundled together as the glass fiber bar 20 is cut off by external force (such as a shield of a shield machine), and will generate reverse rotation as the glass fiber bar 20 is broken.
Go toThe first surface C, which is recessed inward, when the relative twisting or movement of the reinforcing bar 10 and the glass fiber bar 20 is induced by the rotation and the reverse rotation1And a second surface C which is not depressed inwards2Mutually movable in radial and axial directions of the reinforcement 10 and the glass fiber reinforcement 20, respectively, and on the first surface C1And the second surface C2A compressive force is formed therebetween. This squeezing force tends to cause the surface to bulge, thereby creating a localized frangible location that is caught, punctured or sheared by the securing cord 30. Thus by providing the first surface C not uniformly concave1And a relatively flat second surface C2To counteract the tendency of doming, in particular at the first surface C1And the second surface C2The reinforcing bars 10 and the glass fiber bars 20 are expected to move relatively to each other by the applied force.
In particular, the second surface C2During the repeated alternation of rotation and reverse rotation (when the shield machine cuts the area where the fiberglass ribs 20 are located), a fluctuating acting force is generated, so that the second surface C which is not inwards sunken (or flat) is deformed inwards along the radial direction of the pressure relief pad2The channel with reinforcing bar 10 and/or glass fiber reinforcement 20 is laminated more closely, and then easily produces the uplift, and this kind of uplift will appear the local weak area of shearing breakage because of the hook fixed rope 30. While by arranging (figure 4) the first surface C, which is concave and preferably undulated, in an alternating double-ended helical manner1And a second surface C which is not recessed inwards and is preferably flat2In the process, the deformation which is generated by the external acting force and is about to be radially outward along the slow pressing pad can be converted into the spiral tightening in the axial direction (similar to the winding mode of a rope around a shaft, see fig. 4), and particularly, the shape of a notch area between the thread protrusions on the surfaces of the steel bar 10 and the glass fiber bar 20 is followed, so that the damage caused by the protrusion is obviously reduced, the contact of hard metal and hard metal is avoided, and the condition of accelerated corrosion caused by the electrochemical action generated by the contact of double metals is also obviously reduced.
In other words, the first surfaces C having a wave shape in the sectional view1Will follow it in "rotation and reverse rotation"The radial and axial torsions occurring during the repeated alternation, by virtue of the respective undulating development and contraction, absorb the deformations unevenly in the circumferential direction, substantially avoiding the non-inwardly recessed and preferably flat second surface C2A bulge occurs.
A second surface C in close contact with the thread protrusions for securing the stability of the pressure relief pad2Has stronger wear resistance, so that the second surface C2Can better resist the edge-shaped thread edges formed by the thread bulges on the surfaces of the reinforcing steel bars 10 and/or the glass fiber reinforced plastics 20, and the thread edges are connected with the first surface C1Mainly in line contact with the first surface C1The contact part is narrow and high in pressure intensity; in contrast, the first surface C is recessed inward1Is softer and can bear more deformation tasks. Therefore, the structure can reduce the overall abrasion degree, so that the service life of the pressure buffering cushion is prolonged by realizing spiral tightening or loosening in a double-head spiral arrangement mode while fastening the reinforcing steel bars 10 and the glass fiber reinforced plastics 20.
According to a preferred embodiment, a plurality of steel bars 10 and glass fiber reinforcements 20 are connected into a cage based on the above-mentioned steel bar glass fiber reinforcement structure, and a longitudinal truss and a transverse truss for preventing the steel bar cage 100 from deforming in the hoisting process are arranged on the formed steel bar cage 100. The longitudinal girders are arranged in the length extending direction of the reinforcement cage 100, and the transverse girders are arranged in the direction parallel to the cross section of the reinforcement cage 100. Furthermore, since the glass fiber ribs 2 are brittle and have poor bending strength, the hanging points are disposed on the longitudinal girders and/or the transverse girders. Secondly, for some special steel reinforcement cages 100, in addition to the longitudinal truss and the transverse truss, a shear truss and a diagonal member are additionally arranged for reinforcement, so that the steel reinforcement cage 100 is prevented from being deformed when being overturned in the air.
According to a preferred embodiment, in the process of manufacturing the glass fiber reinforced reinforcement cage, since the glass fiber reinforcements 20 cannot be welded, the glass fiber reinforcements 20 and the reinforcements 10 are overlapped, further, the reinforcements 10 and the outer ring stirrups can be connected and fixed by spot welding and/or bundling, and the glass fiber reinforcements 20 and the outer ring stirrups are connected and fixed by bundling.
According to a preferred embodiment, the invention relates to a hoisting device and a method for a glass fiber reinforced plastic reinforcement structure, which can be used for hoisting reinforcement cages 100 connected and formed by the reinforced glass fiber reinforced plastic connection structure. Specifically, the method may comprise the steps of:
s1: a plurality of rows of lifting point groups are arranged along the longitudinal direction of the reinforcement cage 100, each row of lifting point group comprises a plurality of lifting points, wherein the lifting points are arranged on the truss, and the mutually corresponding and adjacent lifting points of each row of lifting point groups are positioned on the same straight line.
In accordance with a preferred embodiment, as shown in fig. 2, a plurality of suspension point groups are arranged with a certain gap on a plurality of cross sections in the longitudinal direction (shown as X direction) of the reinforcement cage 100. The plurality of suspension points in each row of suspension point groups are distributed on the same straight line, and the straight line is preferably the extending direction (the Y direction in the figure) of the cross section of the row of suspension point groups. Further, a plurality of hoisting points in the plurality of hoisting point groups are all located on the same straight line, so that when the reinforcement cage 100 is hoisted through the same position in the longitudinal direction, the reinforcement cage 100 can maintain a balanced state and is not easy to generate bending moment or torque.
S2: first and second cranes provided with the sheave assemblies are respectively connected to lifting points on the girder of the reinforcement cage 100 to lift the reinforcement cage 100 in a horizontal posture.
According to a preferred embodiment, as shown in fig. 2, the first trolley is provided with a first main pulley P1And a first secondary pulley P2The first crane is connected with a plurality of lifting points of a plurality of rows of lifting point groups in the longitudinal direction of the reinforcement cage 100, which are positioned on the same straight line, through the first pulley block. The second crane is provided with a second sub-pulley P3And the second crane is connected with a plurality of lifting points of the rest lifting point groups in the longitudinal direction of the reinforcement cage 100 on the same straight line through the second pulley block.
According to a preferred embodiment, the hoisting method of the glass fiber reinforced plastic bar connecting structure relates to a hoisting device which can be used for packingComprises a first hoisting device and a second hoisting device. Preferably, the first crane and the second crane can be detachably connected to the first hoisting device and the second hoisting device, respectively, to further hoist the reinforcement cage 100. Specifically, as shown in fig. 2, the first lifting device may include a first hook G1A first lifting rope S1A second lifting rope S2A first main pulley P1First secondary pulley P2And a first spreader bar not shown in the drawings.
According to a preferred embodiment, a first hook G1 is attached to the first carrying pole beam, such as by tying a first hook G1 to the four corners of the first carrying pole beam. Further, a first main pulley P1Mounted on the first spreader bar, e.g. by means of a first main pulley P1The first main pulley P is hung on the connecting rod in the slot at the bottom of the first shoulder pole beam1Is connected and fixed with the first shoulder pole beam (not shown in the figure).
According to a preferred embodiment, the first main pulley P1Is provided with a first lifting rope S1. First lifting rope S1One end of which is connected with one row of first lifting point groups d in the longitudinal direction of the reinforcement cage 1001Connected with the other end thereof passing around the first main pulley P1With the first secondary pulley P2Are connected. Further, a first main pulley P1And a first secondary pulley P2Should be the same number, first main pulley P1And a first secondary pulley P2The number of the lifting points depends on the specific number of the lifting points in each row of the lifting point group. Further, a first secondary pulley P2Is provided with a second lifting rope S2. Second lifting rope S2Is wound around the first sub-pulley P2And the same as the first hoisting point group d1Adjacent second lifting point group d2Connected with the other end of the second lifting point group d2Adjacent third hanging point group d3Are connected. Preferably, by means of the first lifting rope S1A second lifting rope S2A first main pulley P1And a first secondary pulley P2Are connected with each other in such a way that the first lifting rope S1And a second lifting rope S2Can be adjusted, thereby ensuring that the reinforcement cage can be adjusted100 is switched from the horizontal state to the vertical state.
According to a preferred embodiment, as shown in fig. 2, the second lifting device may comprise a second hook G2And a third lifting rope S3And a second auxiliary pulley P3And a second spreader bar, not shown in the figures. Specifically, the second hook G2May be attached to the second spreader bar in a manner similar or identical to the manner in which the first hook G1 and the first spreader bar are attached. Further, a second sub-pulley P3Is arranged on the second shoulder pole beam, for example, by arranging a second secondary pulley P3The second auxiliary pulley P is hung on the connecting rod in the slot at the bottom of the second shoulder pole beam3Is fixedly connected with the second shoulder pole beam (not shown in the figure).
According to a preferred embodiment, the second secondary pulley P3Is provided with a third lifting rope S3. Third lifting rope S3One end of the same suspension point group d as the third suspension point group3Adjacent fourth hanging point group d4Connected with each other, the other end of which passes by the second auxiliary pulley P3And the same as the fourth hoisting point group d4Adjacent fifth suspension point group d5Are connected. Further, a second sub-pulley P3The number of the lifting points depends on the specific number of the lifting points in each row of the lifting point group. And preferably a second secondary pulley P3Should be the same as the first main pulley P1And a first secondary pulley P2The number of (2) is the same. Due to the position of the second secondary pulley P3Third lifting ropes S on two sides3Can be adjusted, so that the reinforcement cage 100 can be switched from a horizontal state to a vertical state by the second hoisting device.
According to a preferred embodiment, the lifting capacities of the first crane and the second crane are generally different, and the first crane has a greater maximum lifting capacity as the main crane than the second crane. In particular, the selection of the crane for the respective lifting capacity depends on the maximum stress value of the crane for the respective lifting point. Further, a first crane is correspondingly connected to a lifting point at one end of reinforcement cage 100 in the longitudinal direction, and a second crane is correspondingly connected to a lifting point at the other end of reinforcement cage 100 in the longitudinal direction (as shown in fig. 2).
According to a preferred embodiment, the first crane and the second crane are hoisted simultaneously to lift the reinforcement cage 100 to a preset height in a horizontal posture. Preferably, in order to balance the stress on the reinforcement cage 100 during the simultaneous lifting by the first crane and the second crane without generating bending moment or torque, the lifting speeds of the first crane and the second crane should be the same and maintain a uniform speed state, so as to ensure that no bending moment or torque is generated when the reinforcement cage 100 is horizontally lifted. Further, after lifting steel reinforcement cage 100 to a certain height, carry out intensity detection to the hoisting point on steel reinforcement cage 100, assess its welding fastness to estimate the follow-up stability when lifting and transferring steel reinforcement cage 100. The preset height is about 0.5 m.
S3: the second crane is operated to rotate or move horizontally to the left or right to move reinforcement cage 100 in a horizontal state, and the first crane is operated to move reinforcement cage 100 to finally bring reinforcement cage 100 into a vertical state.
According to a preferred embodiment, the first and second cranes are controlled to move simultaneously to gradually change the rebar cage 100 from a horizontal position to a vertical position to facilitate further lifting of the rebar cage 100 to a higher elevation for movement and lowering into the respective slots/channels. Specifically, the first hoist rope S is controlled to be operated in the process of controlling the first and second cranes to convert the reinforcement cage 100 from the horizontal state to the vertical state1A second lifting rope S2And a third lifting rope S3The lengths of the two sides of the pulley are changed along with the state conversion of the steel reinforcement cage 100, for example, when the steel reinforcement cage 100 is converted from a horizontal state to a vertical state through the hoisting device, the first hoisting device is positioned above the second hoisting device by taking the ground as a reference, and is positioned above the first main pulley P at the moment1And a first lifting point group d1First lifting rope S in between1Is reduced while being positioned at the first main pulley P1And a first secondary pulley P2First lifting rope S in between1Is further located at the first secondary pulley P2Second lifting ropes S on two sides2Also varies in length. Until the steel reinforcement cage 100 is completely changed into a vertical state, the hoisting point groups are sequentially arranged from top to bottomIs a first lifting point group d1And a second lifting point group d1… …, a fifth suspension point group d5。
S4: the connection between the second crane and the hoisting point of the reinforcement cage 100 is disconnected.
According to a preferred embodiment, the force applied by the second lifting device at the corresponding lifting point is gradually reduced during the process of transforming the reinforcement cage 100 from the horizontal state to the vertical state, and the force applied by the reinforcement cage 100 approaches zero when it finally assumes the vertical state. Further, the lifting point connection between the second lifting device and the reinforcement cage 100 is removed at this time, so that no additional acting force is generated on the reinforcement cage 100, and the position state of the reinforcement cage 100 is affected. Specifically, for example, as shown in FIG. 2, the third lifting ropes S can be respectively connected3And a fourth hoisting point group d4And a fifth suspension point group d5The lifting point connection between the first and second lifting ropes is removed, and the third lifting rope S is removed3The second hoist is then operated to move the second hoist in a direction away from the reinforcement cage 100.
S5: the reinforcement cage 100 is disposed in a vertical state in the groove by a first crane.
According to a preferred embodiment, the reinforcement cage 100 may be vertically lowered into the groove by the first crane based on the hanging point connection relationship between the first hoisting device and the reinforcement cage 100. Further, at the vertical in-process of transferring, can connect the haulage rope on steel reinforcement cage 100, and the haulage rope is because of receiving the ascending gravity effort of steel reinforcement cage 100 vertical side and by the tractive, so that at the vertical in-process of transferring steel reinforcement cage 100, whether there is the deviation in the angle of transferring that determines steel reinforcement cage 100 through observing the ascending position deviation of the vertical side of haulage rope, come guide steel reinforcement cage 100 to be transferred the groove according to the vertical direction of regulation through the haulage rope, thereby avoid steel reinforcement cage 100 to go into the groove in-process because of angle deviation and notch interfere each other/interfere, make the forced groove produce great moment of flexure or moment of torsion to steel reinforcement cage 100, and then probably make steel reinforcement cage 100 deform, the fracture destroys its overall structure.
According to a preferred embodiment, the location of the set of suspension points on the reinforcement cage 100 is preferably selected to be the location where the bending moment or torque generated when lifting said reinforcement cage 100 is minimalTo (3). The hoisting process of reinforcement cage 100 shown in fig. 2 is taken as an example for explanation. Specifically, as shown in fig. 2 and 3, the optimal suspension point groups are sequentially selected as d along the longitudinal direction of the reinforcement cage 1001-d5And m and n are hoisting points at two longitudinal ends of the reinforcement cage 100. Further, assume m d1And nd5Are all L at the same distance2(ii) a The distance between the sets of suspension points being the same, i.e. d1d2＝d2d3＝d3d4＝d4d5＝L1And the overall length of the reinforcement cage 100 is set to L. And when the positive and negative bending moments are equal, the bending moment deformation is minimum, namely + M equals-M. As can be seen in conjunction with figure 2,
thus, it is possible to provide
Secondly, L ═ 2L2+4L1Therefore L is1＝0.215L，L20.075L. Preferably, the method can calculate and determine the optimal lifting point position which does not generate bending moment near the lifting point of the reinforcement cage 100 when the reinforcement cage 100 is lifted in a horizontal state. The optimal lifting point position is determined, so that the reinforcement cage 100 cannot generate bending moment or torque due to movement of a crane in the process of lifting the reinforcement cage 100 in a horizontal state, and the phenomenon that the whole reinforcement cage 100 is deformed or even scattered due to the bending moment or torque generated at the lifting point is avoided.
According to a preferred embodiment, it is necessary to secure the first hook G when the reinforcement cage 100 is lifted to a predetermined height in a horizontal state by the first crane and the second crane1And a second hook G2The projection points on the symmetrical plane of the reinforcement cage 100 are all positioned on the central axis of the reinforcement cage 100, namely, the first lifting hook G1And its first projection point O on the symmetrical plane of the reinforcement cage 100 along the vertical direction1Superposed and positioned on the central axis of the reinforcement cage 100, and a second lifting hook G2And its first projection point O on the symmetrical plane of the reinforcement cage 100 along the vertical direction2Coincident and located on the central axis of reinforcement cage 100.
According to a preferred embodiment, the first set of lifting points d is arranged when the sets of lifting points are provided1And a third set of suspension points d3May be located on the same side of reinforcement cage 100 with second set of lifting points d2Can be located the opposite side of reinforcement cage 100 to make in-process of hoisting reinforcement cage 100 with horizontal state and/or vertical state, reinforcement cage 100's atress is more even, thereby guarantees that reinforcement cage 100 can not take place deformation and scatter.
According to a preferred embodiment, when cage 100 is lowered in a vertical state to the vicinity of the notch, it is necessary to measure the cage top elevation of cage 100 to adjust the cage top elevation to a design elevation. This is because there may be a difference between the theoretical hoisting point and the actual hoisting point, so that the hoisting bar is elongated to affect the elevation of the reinforcement cage 100, and therefore the current cage top elevation of the reinforcement cage 100 needs to be measured by a level gauge, so as to adjust the current cage top elevation to the corresponding design elevation according to the actual demand. And preferably, in order to ensure the stability of the whole structure of the reinforcement cage 100 and the deformation resistance thereof, it is necessary to perform full welding at the reinforcement of, for example, a lifting point, and staggered spot welding may be used at the intersection of general portions.
It should be noted that the above-mentioned embodiments are exemplary, and that those skilled in the art, having benefit of the present disclosure, may devise various arrangements that are within the scope of the present disclosure and that fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and figures are illustrative only and are not limiting upon the claims. The scope of the invention is defined by the claims and their equivalents. The present description contains several inventive concepts, such as "preferably", "according to a preferred embodiment" or "optionally", each indicating that the respective paragraph discloses a separate concept, the applicant reserves the right to submit divisional applications according to each inventive concept. The features referred to as "preferably" are provided as an alternative and should not be understood as necessarily, so that the applicant reserves the right to relinquish or delete the relevant preferred feature at any time.
Claims (10)
1. The utility model provides a hoisting device of glass fiber reinforcement steel structure for hoist and mount by a plurality of reinforcing bars (10) and glass fiber reinforcement (20) overlap joint fashioned steel reinforcement cage (100), this glass fiber reinforcement steel structure includes twines in reinforcing bar (10) and glass fiber reinforcement (20) connection portion's fixed rope (30) with the spiral mode, and the configuration is in fixed rope (30) both ends and rather than first fastener (40a) and second fastener (40b) of being connected, its characterized in that, the device includes:
a first hoisting device at least comprising a pulley assembly and a lifting rope assembly, wherein the first hoisting device is configured to be connected with lifting points of a plurality of rows of lifting point groups at one end of the longitudinal direction of the reinforcement cage (100) through the pulley assembly and the lifting rope assembly;
and a second hoisting device at least comprising a pulley assembly and a lifting rope assembly, wherein the second hoisting device is configured to be connected with the hoisting points of the rest hoisting point groups along the longitudinal other end of the reinforcement cage (100) through the pulley assembly and the lifting rope assembly.
2. Hoisting device according to claim 1, characterized in that the first hoisting device comprises a first hook (G)1) A first lifting rope (S)1) And a second lifting rope (S)2) A first main pulley (P)1) A first secondary pulley (P)2) And a first shoulder pole beam, wherein the first shoulder pole beam,
wherein,
the first hook (G)1) And a first main pulley (P)1) Connected to the first shoulder pole beam and arranged on the first main pulley (P)1) First lifting rope (S) of1) One end of which is connected to a first set of suspension points (d) of said reinforcement cage (100)1) And the other end thereof is connected to the first secondary pulley (P)2) Arranged at said first secondary pulley (P)2) Second lifting rope (S) of2) One end of which is connected to a second set of suspension points (d) of said reinforcement cage (100)2) And the other end thereof is connected to a third lifting point group (d) of the reinforcement cage (100)2)；
The second hoisting device comprises a second hook (G)2) And a third lifting rope (S)3) And a second auxiliary pulley (P)3) And a second shoulder pole beam, wherein the second hook (G)2) And a second counter-pulley (P)3) Connected to the second shoulder pole beam and arranged on the second secondary pulley (P)3) Third lifting rope (S)3) One end of which is connected to a fourth set of suspension points (d) of said reinforcement cage (100)4) And the other end thereof is connected to a fifth lifting point group (d) of the reinforcement cage (100)5)。
3. Hoisting device according to one of the preceding claims, wherein a longitudinal girder and a transverse girder are arranged on the reinforcement cage (100), and wherein a plurality of rows of hoisting point groups are arranged above the longitudinal girder and/or the transverse girder, wherein,
the positions of the multiple rows of hoisting point groups are configured at the position where the bending moment or the torque generated when the reinforcement cage (100) is hoisted is minimum, and the multiple hoisting points of the multiple rows of hoisting point groups are positioned on the same straight line.
4. Hoisting device according to one of the preceding claims, characterized in that the first catch (40a) and the second catch (40b) are clamped onto the reinforcement (10) and the glass fiber reinforcement (20),
the first clamping piece (40a) and the second clamping piece (40b) comprise clamping rods (401) and clamping plates (402) detachably connected with the clamping rods (401), and two ends of each clamping rod (401) penetrating through the clamping plates (402) are fixed to one side of each clamping plate (402) through fasteners.
5. Hoisting device according to one of the preceding claims, characterized in that the detent plate (402) of the first detent (40a) and/or the second detent (40b) is provided with a plurality of fixing holes at both ends, wherein,
the fixing hole is arranged on the edge surface of the clamping plate (402) close to one side of the fixing rope (30), so that the fixing rope (30) spirally wound on the connecting part of the reinforcing steel bar (10) and the glass fiber reinforced plastic bar (20) can be connected with the first clamping piece (40a) and/or the second clamping piece (40b) in a mode that two ends of the fixing rope penetrate through the fixing hole.
6. Hoisting device according to one of the preceding claims, wherein a plurality of third fixing elements (50) are arranged between the first engaging element (40a) and the second engaging element (40b) and are arranged to be placed over the reinforcement (10) and the glass fiber reinforcement (20), and wherein the third fixing elements (50) comprise at least two detachably connected fixing plates (501) facing each other.
7. Lifting device according to claim 6, characterised in that the two fixing plates (501) are provided with pressure relief pads on their mutually opposite side wall surfaces, said pressure relief pads having mutually different first inwardly recessed surfaces (C)1) And a second surface (C) which is not depressed inwards2) Wherein
the first surface (C)1) Is constructed in the same shape, inclination angle and extending direction as the protrusions of the surface of the reinforcing bar (10) and/or the glass fiber reinforcement (20) so that the first surface (C) is formed when the reinforcing bar (10) and the glass fiber reinforcement (20) are bound and fixed by the fixing rope (30)1) Can be matched with the bulges on the surface of the reinforcing steel bar (10) and/or the glass fiber bar (20) in shape to be tightly attached;
and on the first surface (C) of said pressure-relief pad1) The second surface (C) is not concave when mutually matched with the convex of the surface of the steel bar (10) and/or the glass fiber bar (20)2) Can be embedded in the channel formed by the adjacent bulges of the reinforcing steel bar (10) and/or the glass fiber reinforcement (20) respectively so as to tightly press the fixing rope (30) in the channel formed by the adjacent bulges of the reinforcing steel bar (10) and/or the glass fiber reinforcement (20).
8. A hoisting method of a glass fiber reinforced plastic bar structure is used for hoisting a reinforcement cage (100) formed by overlapping a plurality of reinforcement bars (10) and glass fiber reinforced plastic bars (20), the glass fiber reinforced plastic bar structure comprises a fixing rope (30) spirally wound on the connecting part of the reinforcement bars (10) and the glass fiber reinforced plastic bars (20), and a first clamping piece (40a) and a second clamping piece (40b) which are arranged at the two ends of the fixing rope (30) and connected with the fixing rope, and is characterized in that,
a plurality of rows of lifting point groups comprising a plurality of lifting points are arranged along the longitudinal direction of the reinforcement cage (100), and the plurality of lifting points of each row of lifting point groups are collinear;
arranging a first crane and a second crane, wherein the first crane is connected with hoisting points of a plurality of rows of hoisting point groups in the longitudinal direction of the reinforcement cage (100) through a first hoisting device, and the second crane is connected with the hoisting points of the other hoisting point groups in the longitudinal direction of the reinforcement cage (100) through a second hoisting device;
simultaneously hoisting a first crane and a second crane to hoist the reinforcement cage (100) to a preset height in a horizontal posture;
driving the second crane to rotate or translate to one side in a manner of keeping the reinforcement cage (100) to move in a horizontal state, and simultaneously driving the first crane to move in a direction of driving the reinforcement cage (100) to be in a vertical state;
disconnecting the second crane from the hoisting point of the reinforcement cage (100);
the reinforcement cage (100) is lowered into the tank in a vertical state by a first crane.
9. Hoisting method according to claim 8, characterized in that the first hoisting rope (S) of the first hoisting device1) One end of which is connected to the first hoisting point group (d)1) And the other end thereof is connected to a first main pulley (P) of the first hoisting device1) And is arranged at the first main pulley (P)1) Second lifting rope (S) of2) One end of which is connected to a second set of suspension points (d) of said reinforcement cage (100)2) And the other end thereof is connected to a third lifting point group (d) of the reinforcement cage (100)2) Wherein
the first hoisting point group (d)1) And a third set of suspension points (d)2) On the same side of the reinforcement cage (100), the second set of lifting points (d)2) On the opposite side of the reinforcement cage (100).
10. Hoisting method according to claim 9, characterized in that the first hoisting is lifted simultaneouslyBefore a crane and a second crane are used for hoisting the reinforcement cage (100) to a preset height in a horizontal posture, a first hook (G) of the first hoisting device is determined1) And a projected point of the center of gravity in the vertical direction and a second hook (G) of the second hoisting device2) The projection point on the symmetrical plane of the reinforcement cage (100) is positioned on the central axis of the reinforcement cage (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111145856.4A CN113860140A (en) | 2021-09-28 | 2021-09-28 | Hoisting device and method for glass fiber reinforced bar structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111145856.4A CN113860140A (en) | 2021-09-28 | 2021-09-28 | Hoisting device and method for glass fiber reinforced bar structure |
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| CN113860140A true CN113860140A (en) | 2021-12-31 |
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| CN202111145856.4A Pending CN113860140A (en) | 2021-09-28 | 2021-09-28 | Hoisting device and method for glass fiber reinforced bar structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116332036A (en) * | 2023-05-30 | 2023-06-27 | 河南省第二建筑工程发展有限公司 | Steel reinforcement cage lifts by crane hoisting device |
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