CN110877863A - Construction method for hoisting wall-connected reinforcement cage by combining stress gauge - Google Patents
Construction method for hoisting wall-connected reinforcement cage by combining stress gauge Download PDFInfo
- Publication number
- CN110877863A CN110877863A CN201911205985.0A CN201911205985A CN110877863A CN 110877863 A CN110877863 A CN 110877863A CN 201911205985 A CN201911205985 A CN 201911205985A CN 110877863 A CN110877863 A CN 110877863A
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- reinforcement cage
- stress
- hoisting
- reinforcement
- crane
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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
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
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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
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
Abstract
The invention relates to the technical field of reinforcement cages, and discloses a construction method for hoisting a wall-connected reinforcement cage by combining a stress gauge, which comprises a reinforcement cage, a main crane, an auxiliary crane, a reinforcement stress gauge and background measuring and reading equipment; the steel bar stress meter is arranged on the steel bar cage and is electrically connected with the background measuring and reading equipment; before hoisting the reinforcement cage, firstly setting a hoisting point, finding a position with larger deformation in the hoisting process of the reinforcement cage, calculating a stress value of the position with larger deformation, and taking 90% of the stress value as an early warning value; before hoisting, processing the reinforcement cage into a wall-connected reinforcement cage, installing a reinforcement stress meter at a position with larger deformation, and electrically connecting the reinforcement stress meter with background measuring and reading equipment; in the hoisting process, the stress of the steel bars displayed by the background measuring and reading equipment is observed, and the hoisting speed of the main crane and the auxiliary crane is adjusted in time before the early warning value is reached, so that the deformation of the steel bar cage is reduced, and the steel bar cage is effectively prevented from being scattered due to overlarge deformation of the steel bar cage.
Description
Technical Field
The invention relates to the technical field of reinforcement cages, in particular to a construction method for hoisting a wall-connected reinforcement cage by combining a stress gauge.
Background
For hoisting construction of the overlong and overweight underground continuous wall reinforcement cage, the construction method of integral manufacture, integral lifting and hoisting by two machines, integral straightening in the air and one-time groove entering is commonly adopted at present.
However, in the implementation process, the crane hoists the reinforcement cage through naked eyes of people, so that observation errors often occur, the deformation of the reinforcement cage is too large, and even the reinforcement cage is scattered, so that great loss is caused to the engineering.
Disclosure of Invention
The invention aims to provide a construction method for hoisting a wall-connected reinforcement cage by combining a stress gauge, and aims to solve the problems that in the prior art, the hoisting of a command crane is observed by naked eyes of people, the deformation condition of the reinforcement cage is difficult to find, the deformation of the reinforcement cage is easy to cause overlarge deformation of the reinforcement cage, and the reinforcement cage is scattered.
The invention relates to a construction method for hoisting a wall-connected reinforcement cage by combining a stress gauge, which comprises the following steps:
s1: setting a lifting point, wherein the reinforcement cage is provided with a plurality of main reinforcements, calculating a stress value at a position where the main reinforcements deform greatly in the lifting process of the reinforcement cage, and taking 90% of the stress value as an early warning value;
s2: the method comprises the following steps of processing a steel reinforcement cage into a full-length steel reinforcement cage at one time on the ground, installing a steel reinforcement stress meter at a position where the steel reinforcement cage is deformed greatly in a hoisting process, and connecting the steel reinforcement stress meter into a background measuring and reading device;
s3: operating the main crane and the auxiliary crane to transfer the hoisting positions, and respectively installing shackles of hoisting points;
s4: after the installation condition and the stress center of gravity of a crane steel wire rope are checked, the steel bar cage is lifted, the steel bar stress is monitored in real time according to the reading of the background reading equipment, if the steel bar stress value reaches an early warning value, the lifting speed of the main crane and the auxiliary crane is adjusted in time, the deformation of the steel bar cage is reduced, and therefore the stress of the steel bar is reduced;
s5: after the reinforcement cage is lifted to be 0.3-0.5 m away from the ground, the main crane lifts the hook, the auxiliary crane is operated in time to cooperate with the hook according to the distance between the tail part of the reinforcement cage and the ground and the data read by the background, and if the stress value of the reinforcement reaches the early warning value, the lifting speed of the main crane and the auxiliary crane is adjusted in time to ensure smooth lifting;
s6: after the reinforcement cage is hoisted, the reinforcement cage is perpendicular to the ground by a main crane and an auxiliary crane, and the hoisting speed of the main crane and the auxiliary crane is controlled according to the measurement and the measurement of the stress of the background reinforcement in the project;
s7: removing the armor remover of the lifting point of the auxiliary crane on the reinforcement cage, and enabling the auxiliary crane to be far away from the lifting operation range;
s8: operating a main crane to hoist the reinforcement cage into the groove and positioning, wherein the main crane is stable to walk, and a traction rope is pulled on the reinforcement cage; and the steel cannot be forced to enter the groove when the steel is placed downwards.
Further, in step S4, the main crane and the sub-crane are lifted at the same time.
Furthermore, the steel bar stress meter is externally provided with a shell, two ends of the shell are respectively provided with an installation rod, and the two installation rods are respectively welded and fixed with the main steel bars.
Furthermore, a plurality of pipelines for cooling are arranged in the shell, and cooling media are filled in the pipelines.
Furthermore, a plurality of pipelines are respectively positioned between the two mounting rods and are arranged at intervals.
Further, a gap is formed between the shell and the steel bar stress meter; the shell inner wall has fixed clamp, fixed clamp cover is established on the bar stress meter, just fixed clamp with the inner wall of shell is fixed, through fixed clamp will the bar stress meter is fixed in the shell.
Further, the fixing clamp has elasticity.
Furthermore, the shell is provided with a tube strip used for protecting the data line, one end of the tube strip is communicated with the inside of the shell, the other end of the tube strip extends outwards, and the tube strip is provided with a plurality of sticky patches.
Further, the background measuring and reading equipment comprises a box body for arranging the lines; the box body is provided with an upper end opening and an upper cover for sealing the upper end opening; the box body is provided with a first side panel and a second side panel; a plurality of clamping grooves are formed in the first side panel and extend to the upper end opening; a plurality of the clamping grooves are arranged on the side panel at intervals; the box body is provided with an inner cavity which is communicated with the upper end opening; a winding groove is formed in the inner cavity, and the data wire is wound in the winding groove; a wire outlet hole is formed on the second side panel; the data line enters the inner cavity from the clamping groove and then extends out of the box body through the line outlet hole.
Furthermore, a plurality of through holes are formed in two side walls of the clamping groove, a spring is arranged in each through hole, a limiting column is fixed at the end part of each spring, and each limiting column extends to the clamping groove; when the data line passes through the limiting column, the spring is compressed.
Compared with the prior art, the construction method for hoisting the wall-connected reinforcement cage by combining the stress gauge comprises the steps of setting a hoisting point before hoisting the reinforcement cage, finding a position with larger deformation in the hoisting process of the reinforcement cage, calculating the stress value of the position with larger deformation, and taking 90% of the stress value as an early warning value; before hoisting, processing the reinforcement cage into a wall-connected reinforcement cage, installing a reinforcement stress meter at a position with larger deformation, and electrically connecting the reinforcement stress meter with background measuring and reading equipment; in the hoisting process, the stress of the steel bars displayed by the background measuring and reading equipment is observed, and the hoisting speed of the main crane and the auxiliary crane is adjusted in time before the early warning value is reached, so that the deformation of the steel bar cage is reduced, and the steel bar cage is effectively prevented from being scattered due to overlarge deformation of the steel bar cage.
Drawings
Fig. 1 is a schematic perspective view of hoisting a reinforcement cage according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a steel bar stress gauge provided in the embodiment of the present invention;
FIG. 3 is a perspective view of a case provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of a construction process of hoisting a wall-connected reinforcement cage combined with a stress gauge according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.
The following describes the implementation of the present invention in detail with reference to specific embodiments.
Referring to fig. 1-4, preferred embodiments of the present invention are provided.
The construction method for hoisting the wall-connected reinforcement cage by combining the stress gauge comprises a reinforcement cage 10, a main crane 11, an auxiliary crane 12, a reinforcement stress gauge 13 and background measuring and reading equipment 16; reinforcing bar stressometer 13 installs on steel reinforcement cage 10 to survey reading equipment 16 electric connection with the backstage, when lifting by crane steel reinforcement cage 10 through main loop wheel machine 11 and vice loop wheel machine 12, monitor steel reinforcement cage 10 stress through reinforcing bar stressometer 13, avoid steel reinforcement cage 10 to warp too big, lead to steel reinforcement cage 10 to scatter the frame.
The construction steps of hoisting the reinforcement cage 10 are as follows:
s1: according to a design drawing, firstly, a hoisting scheme is formulated, a hoisting point is set, a stress value at a position where a main reinforcement 100 deforms greatly in the hoisting process of the reinforcement cage 10 is calculated, and 90% of the stress value is used as an early warning value;
s2: the reinforcement cage 10 adopts an integral manufacturing mode, firstly, the reinforcement cage 10 is processed into a full-length reinforcement cage 10 at one time on the ground, meanwhile, a reinforcement stress meter 13 is welded at a position with larger deformation in the hoisting process of the reinforcement cage 10 according to calculation, the reinforcement stress meter 13 is connected into a background reading device 16 through a data line 14, the reinforcement stress meter 13 is electrically connected with the background reading device 16, the reinforcement stress meter 13 measures the reinforcement stress value, and the stress value is read out through the background reading device 16;
s3: operating the main crane 11 and the auxiliary crane 12 to transfer the hoisting position of the reinforcement cage 10, and installing a shackle of a hoisting point;
s4: after the installation condition and the stress center of gravity of the steel wire ropes of the main crane 11 and the auxiliary crane 12 are checked, the main crane 11 and the auxiliary crane 12 start to lift simultaneously, so that the steel bar cage 10 is balanced, the steel bar stress of the steel bar cage 10 in a balanced state is monitored in real time according to the reading of the background reading device 16, and if the numerical value of the steel bar stress reaches an early warning value, the lifting speed of the crane is adjusted in time, so that the deformation of the steel bar cage 10 is reduced, and the stress of the steel bar is reduced;
s5: when the reinforcement cage 10 is lifted to be 0.3-0.5 m away from the ground, whether the reinforcement cage 10 is stable is checked, when the reinforcement cage 10 is determined to be in a stable state, the main crane 11 lifts a hook, the auxiliary crane is operated in time to cooperate with the lifting hook according to the distance between the tail of the reinforcement cage 10 and the ground and the combination of data read by a background, and if the reinforcement stress value reaches an early warning value, the lifting speeds of the main crane and the auxiliary crane are adjusted in time to ensure smooth lifting;
s6: after the reinforcement cage 10 is hoisted, the main crane 11 rotates in one direction, the auxiliary crane 12 rotates to a proper position immediately, the reinforcement cage 10 is vertical to the ground, and the hoisting speed of the main crane 11 and the auxiliary crane 12 is controlled according to the measurement and reading data of the background reinforcement stress meter 13 in the project;
s7: when the reinforcement cage 10 is placed in a vertical state, removing the armour of the hoisting point of the auxiliary crane 12 on the reinforcement cage 10, and keeping the auxiliary crane 12 away from the hoisting action range, so as to avoid influencing the allocation and transportation of the main crane 11;
s8: operating a main crane 11 to hoist the reinforcement cage 10 into the groove, positioning, keeping the main crane 11 moving stably, and pulling a traction rope on the reinforcement cage 10; and the steel cannot be forced to enter the groove when the steel is placed downwards.
According to the construction method for hoisting the wall-connected reinforcement cage combined with the stress gauge, before the reinforcement cage 10 is hoisted, a hoisting point is set, the position with larger deformation in the hoisting process of the reinforcement cage 10 is found, the stress value of the position with larger deformation is calculated, and 90% of the stress value is used as an early warning value; before hoisting, processing the reinforcement cage 10 into a wall-connected reinforcement cage 10, installing a reinforcement stress meter 13 at a position with larger deformation, and electrically connecting the reinforcement stress meter 13 with a background measuring and reading device 16; in the hoisting process, the stress of the steel bars displayed by the background measuring and reading equipment 16 is observed, and the hoisting speed of the main crane 11 and the auxiliary crane 12 is adjusted in time before the early warning value is reached, so that the deformation of the steel bar cage 10 is reduced, and the steel bar cage 10 is effectively prevented from being scattered due to the overlarge deformation of the steel bar cage 10.
Reinforcing bar stressometer 13 has shell 130 outward, through shell 130 protection reinforcing bar stressometer 13, avoids reinforcing bar stressometer 13 to receive the damage in the work progress, influences the stress detection value.
The installation rods 131 are formed at both ends of the housing 130, respectively, and when the bar stress meter 13 is installed, the main bar 100 should be cut off, and the installation rods 131 at both ends of the housing 130 are welded to both ends of the cut main bar 100, so that the bar stress meter 13 is fixed to the main bar 100.
In addition, a plurality of pipelines 132 are arranged in the shell 130, cooling media are filled in the pipelines 132, the temperature of the mounting rods 131 is very high after welding, in order to avoid the influence of high temperature on the measurement of the steel bar stress meter 13, the temperature in the shell 130 needs to be controlled, and the pipelines 132 are just positioned on the inner sides of the mounting rods 131 and between the two mounting rods 131; when the heat reaches the pipeline 132, the cooling medium in the pipeline 132 has a cooling effect, and the inner wall of the shell 130 is covered with a heat insulation layer, so that the heat insulation layer can not only play a heat insulation effect, but also play a sealing effect, and avoid the infiltration of slurry.
Have the clearance between shell 130 and the reinforcing bar stressometer 13, for reinforcing bar stressometer 13 provides certain installation space, when reinforcing bar stressometer 13 is malfunctioning or trouble, can open shell 130, need not to take off shell 130, direct change reinforcing bar stressometer 13 can, convenient and practical.
The inner wall of shell 130 has fixed clamp 133, and fixed clamp 133 cover is established on bar stress meter 13, and fixed clamp 133 is fixed with the inner wall of shell 130, fixes bar stress meter 13 in shell 130 through fixed clamp 133, and when avoiding handling steel reinforcement cage 10, bar stress meter 13 receives the collision in shell 130, leads to bar stress meter 13 to damage, and fixed clamp 133 has elasticity, can fix the different bar stress meter 13 of size.
The shell 130 is provided with a pipe strip 134 for protecting the data line 14, one end of the pipe strip 134 is communicated with the inside of the shell 130, the other end of the pipe strip 134 extends outwards, the pipe strip 134 is provided with a plurality of sticky patches, the data line 14 connected with the background reading and testing device 16 of the steel bar stress meter 13 penetrates into the pipe strip 134 through one end of the pipe strip 134, and the pipe strip 134 is attached to the main rib 100 by the patches on the pipe strip 134, so that the construction is prevented from being affected by disorder of the data line 14; the background measuring and reading equipment 16 comprises a box body 15 for placing lines, the other end of each pipe strip 134 extends out of the box body 15, the data lines 14 on the steel bar stressometers 13 are gathered to the box body 15, and the box body 15 is provided with a first side panel 152, a second side panel 150 and an inner cavity 155; a plurality of clamping grooves 153 are formed on the first side panel 152, and the clamping grooves 153 extend to the upper end opening; a plurality of slots 153 are arranged on the first side panel 152 at intervals, the data lines 14 enter the inner cavity 155 through the slots 153, and the box body 15 is provided with an upper cover with an upper end opening and an upper end opening for sealing; the inner cavity 155 is communicated with the upper end opening; have wire winding groove 156 in the inner chamber 155, data line 14 coils in wire winding groove 156 in order, can guarantee like this that in the work progress, data line 14 all collects in box body 15, avoids data line 14 to influence the construction.
The second side panel 150 is formed with a wire outlet hole 151; the data line 14 enters the inner cavity 155 from the card slot 153, and then extends to the outside of the box body 15 through the wire outlet 151, and is connected with the background reading device 16.
In addition, a plurality of through holes are formed in two side walls of the clamping groove 153, springs are arranged in the through holes, limiting columns 154 are fixed to the end portions of the springs, and the limiting columns 154 extend to the clamping groove 153; when the data line 14 passes through the limiting column 154, the spring is compressed, and the through holes on the two sides of the clamping groove 153 are arranged at intervals, and the through holes on the two sides are arranged in pairs and opposite to each other.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The construction method for hoisting the wall-connected reinforcement cage by combining the stress gauge is characterized by comprising the following steps of:
s1: setting a lifting point, wherein the reinforcement cage is provided with a plurality of main reinforcements, calculating a stress value at a position where the main reinforcements deform greatly in the lifting process of the reinforcement cage, and taking 90% of the stress value as an early warning value;
s2: the method comprises the following steps of processing a steel reinforcement cage into a full-length steel reinforcement cage at one time on the ground, installing a steel reinforcement stress meter at a position where the steel reinforcement cage is deformed greatly in a hoisting process, and connecting the steel reinforcement stress meter into a background measuring and reading device;
s3: operating the main crane and the auxiliary crane to transfer the hoisting positions, and respectively installing shackles of hoisting points;
s4: after the installation condition and the stress center of gravity of a crane steel wire rope are checked, the steel bar cage is lifted, the steel bar stress is monitored in real time according to the reading of the background reading equipment, if the steel bar stress value reaches an early warning value, the lifting speed of the main crane and the auxiliary crane is adjusted in time, the deformation of the steel bar cage is reduced, and therefore the stress of the steel bar is reduced;
s5: after the reinforcement cage is lifted to be 0.3-0.5 m away from the ground, the main crane lifts the hook, the auxiliary crane is operated in time to cooperate with the hook according to the distance between the tail part of the reinforcement cage and the ground and the data read by the background, and if the stress value of the reinforcement reaches the early warning value, the lifting speed of the main crane and the auxiliary crane is adjusted in time to ensure smooth lifting;
s6: after the reinforcement cage is hoisted, the reinforcement cage is perpendicular to the ground by a main crane and an auxiliary crane, and the hoisting speed of the main crane and the auxiliary crane is controlled according to the measurement and the measurement of the stress of the background reinforcement in the project;
s7: removing the armor remover of the lifting point of the auxiliary crane on the reinforcement cage, and enabling the auxiliary crane to be far away from the lifting operation range;
s8: operating a main crane to hoist the reinforcement cage into the groove and positioning, wherein the main crane is stable to walk, and a traction rope is pulled on the reinforcement cage; and the steel cannot be forced to enter the groove when the steel is placed downwards.
2. The method for constructing the wall-connected reinforcement cage combined with the stress gauge as claimed in claim 1, wherein the main crane and the sub-crane are hoisted simultaneously at step S4.
3. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge as claimed in claim 1, wherein the reinforcement stress gauge is externally provided with a shell, mounting rods are respectively formed at two ends of the shell, and the two mounting rods are respectively welded and fixed with the main reinforcement.
4. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge as recited in claim 3, wherein a plurality of pipelines for cooling are provided in the housing, and the pipelines are filled with cooling medium.
5. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge as recited in claim 4, wherein a plurality of the pipes are respectively positioned between the two installation rods and are arranged at intervals.
6. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge according to any one of claims 3 to 5, wherein a gap is formed between the shell and the reinforcement stress gauge; the shell inner wall has fixed clamp, fixed clamp cover is established on the bar stress meter, just fixed clamp with the inner wall of shell is fixed, through fixed clamp will the bar stress meter is fixed in the shell.
7. The method for constructing the wall-connected reinforcement cage combined with the stress gauge as claimed in claim 6, wherein the fixing clip has elasticity.
8. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge as recited in any one of claims 3 to 5, wherein the housing has a tube strip for protecting the data line, one end of the tube strip is communicated with the inside of the housing, the other end of the tube strip is extended outwards, and the tube strip has a plurality of adhesive patches thereon.
9. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge as recited in claim 8, wherein the background reading and measuring device comprises a box body for placing lines; the box body is provided with an upper end opening and an upper cover for sealing the upper end opening; the box body is provided with a first side panel and a second side panel; a plurality of clamping grooves are formed in the first side panel and extend to the upper end opening; a plurality of the clamping grooves are arranged on the side panel at intervals; the box body is provided with an inner cavity which is communicated with the upper end opening; a winding groove is formed in the inner cavity, and the data wire is wound in the winding groove; a wire outlet hole is formed on the second side panel; the data line enters the inner cavity from the clamping groove and then extends out of the box body through the line outlet hole.
10. The method for hoisting and constructing the wall-connected reinforcement cage combined with the stress gauge according to claim 9, wherein a plurality of through holes are formed in two side walls of the clamping groove, a spring is arranged in each through hole, a limiting column is fixed to the end of each spring, and each limiting column extends to the clamping groove; when the data line passes through the limiting column, the spring is compressed.
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| CN111411624A (en) * | 2020-03-27 | 2020-07-14 | 深圳市工勘岩土集团有限公司 | Hoisting method for reinforcement cage of underground continuous wall in height-limited area |
| CN111778961A (en) * | 2020-05-19 | 2020-10-16 | 中交第二航务工程局有限公司 | Production line arrangement and hoisting process for underground diaphragm wall reinforcement cage |
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| CN111411624A (en) * | 2020-03-27 | 2020-07-14 | 深圳市工勘岩土集团有限公司 | Hoisting method for reinforcement cage of underground continuous wall in height-limited area |
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| CN111778961A (en) * | 2020-05-19 | 2020-10-16 | 中交第二航务工程局有限公司 | Production line arrangement and hoisting process for underground diaphragm wall reinforcement cage |
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|---|---|
| CN110877863B (en) | 2021-01-05 |
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