CN115233656B - Construction method of complex underground engineering reinforcement cage - Google Patents
Construction method of complex underground engineering reinforcement cage Download PDFInfo
- Publication number
- CN115233656B CN115233656B CN202210912094.4A CN202210912094A CN115233656B CN 115233656 B CN115233656 B CN 115233656B CN 202210912094 A CN202210912094 A CN 202210912094A CN 115233656 B CN115233656 B CN 115233656B
- Authority
- CN
- China
- Prior art keywords
- reinforcement cage
- steel
- hoisting
- lifting
- tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
-
- 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
-
- 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
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
- E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention provides a construction method of a complex underground engineering reinforcement cage, which comprises the steps of hoisting tool selection, hoisting tool hoisting point arrangement, steel wire rope selection, reinforcement setting of reinforcement cage skeleton ribs, reinforcement setting of reinforcement cage hoisting points, reinforcement setting of hoisting points when the reinforcement cage is vertical, reinforcement cage hoisting rib setting, pavement setting, reinforcement cage hoisting pouring and the like.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a complex underground engineering reinforcement cage.
Background
In the continuous underground wall construction process, because the steel reinforcement cage is great in the force that the position of hoisting point received in the hoist and mount in-process, lead to the steel reinforcement cage to produce deformation in the hoist and mount in-process that the slot segment appears blocking easily, simultaneously, at the in-process of hoisting the steel reinforcement cage to the slot segment inside because of the effect of air current, lead to can wind-following swing after the steel reinforcement cage is hoisted, need the manual adjustment steel reinforcement cage of constructor get into the position of slot segment, not only have the danger, moreover the problem of steel reinforcement cage card in the slot segment inside appears easily, simultaneously in the in-process of pouring through the slip casting pipe, because the grout outlet of slip casting pipe contacts with the tank bottom easily, when debris is not clear up, can get into the grout outlet and cause the grout outlet to block up of slip casting pipe at the in-process that inserts the slip casting pipe, cause the slip not smooth.
Disclosure of Invention
The embodiment of the invention provides a construction method of a complex underground engineering reinforcement cage, which solves the problems that the reinforcement cage is easy to be blocked in a groove section and a slurry outlet of a grouting pipe is blocked to cause unsmooth slurry discharge in the existing continuous underground wall construction process by reinforcing a framework and a lifting point of the reinforcement cage and arranging a construction tool in the reinforced reinforcement cage.
In view of the above problems, the technical scheme provided by the invention is as follows:
a construction method of a complex underground engineering reinforcement cage comprises the following steps:
step 4, reinforcing the reinforcement cage framework ribs, wherein (1) the longitudinal and transverse trusses of the reinforcement cage are used as lifting trusses, and lifting points are arranged at the intersection points of the longitudinal and transverse trusses, so that the reinforcement cage is sufficiently rigid when lifted to prevent the reinforcement cage from generating irreversible deformation; (2) the angle-width and special-width steel reinforcement cages are additionally provided with a vertical lifting truss, a horizontal lifting truss and a lifting point, and a herringbone truss and a diagonal brace are additionally arranged for reinforcement so as to prevent the steel reinforcement cages from deforming when the steel reinforcement cages are overturned in the air;
step 5, welding the hanging points of the reinforcement cage, wherein the cross points of the horizontal reinforcement of the reinforcement cage and the truss reinforcement, the 2m range of the hanging points, the positions of the openings of the reinforcement cage and the frame within a certain range are preferably firmly welded by 100%, and other positions can be welded by 50%; the steel reinforcement cage hanging points and the main bars are welded by single-sided welding, the reinforcing bars are welded by double-sided welding, and the hanging bars are welded by double-sided welding; before the steel bar welding construction, rust spots, greasy dirt and sundries on the welding parts of the steel bars and the steel plates and on the surfaces of the contact parts of the steel bars and the electrodes should be removed, and when the end parts of the steel bars are bent and twisted, straightening and cutting should be carried out; the grounding wire and the steel bar are in close contact; slag should be removed in time in the welding process, the surface of the welding seam should be smooth, the residual height of the welding seam should be in smooth transition, and the arc pit should be filled;
step 6, reinforcing the horizontal hoisting hanging point of the steel reinforcement cage, arranging a 'nearly' shaped reinforcing rib on the hanging point of the steel reinforcement cage, wherein the reinforcing rib adopts phi 28 steel bars, and a phi 25 steel bar is added in the width direction at the position of the hanging point to be welded with the longitudinal steel bars to be used as the hanging point for reinforcement;
step 7, reinforcing the lifting points when the reinforcement cage is vertical, wherein phi 28 reinforcement bars are adopted and positioned at a position 1m away from the top of the reinforcement cage and are flush with the first horizontal reinforcement mass to serve as the lifting points when the reinforcement cage is vertical;
step 8, arranging a steel reinforcement cage hanging bar, wherein phi 28 round steel is adopted for manufacturing, double-sided welding is adopted for welding, a double-ring is adopted for the top of the hanging bar, an upper ring is a hanging hook ring, a lower ring is a rest ring, and the length of the hanging bar is comprehensively considered and arranged according to the height of a steel reinforcement cage top plate, the elevation of the top surface of a guide wall and the deformation of a hanging ring after lifting;
step 9, setting a pavement, namely setting a construction pavement with the thickness of 250mm by using single-layer bidirectional phi 14@200 reinforcing bars and setting concrete with the strength of C30;
and 10, hoisting and pouring the reinforcement cage, hoisting the reinforcement cage into the groove section through a hoisting tool, and pouring concrete through a grouting pipe.
In order to better realize the technical scheme of the invention, the following technical measures are adopted.
Further, in the step 1, the hoisting tool selects two crawler cranes as hoisting tools, one of the two crawler cranes is set as a main hoisting tool, the other one is set as an auxiliary hoisting tool, and the maximum hoisting capacity of the selected crawler crane is not more than 0.8 times of the limit hoisting capacity of the crawler crane.
Further, in the step 2, 2 hanging points are transversely arranged according to the width of the reinforcement cage, 6 hanging points are arranged according to the length direction of the reinforcement cage, 2 points are arranged on the main hanging tool, and 4 points are arranged on the main hanging tool.
Further, in the step 3, the steel wire rope adopts the following expressionJudging whether the steel wire rope meets hoisting requirements or not:
；
wherein: s is the strength of the steel wire rope;
a is the conversion coefficient of the breaking force of the steel wire rope;
p is the sum of breaking force of the steel wire rope;
k is the safety coefficient of the steel wire rope;
and selecting a steel wire rope with the S calculated and larger than the weight of the steel reinforcement cage.
Further, in the step 5, upper bar welding or lap welding is adopted, the thickness of the welding seam is not less than 0.3 times of the diameter of the main rib, and the width is not less than 0.8 times of the diameter of the main rib; the length of the single-sided welding seam is not less than 10 times of the diameter of the main rib, and the length of the double-sided welding seam is not less than 5 times of the diameter of the main rib.
Further, the step 10 includes:
step 11: commanding the main hoisting tool and the auxiliary hoisting tool to be transferred to a hoisting position, and installing shackles of the hoisting points;
step 12: after the installation condition of the wire ropes of the two hoisting tools and the gravity center of the stress are checked, the hoisting is started at the same time;
step 13: after the steel reinforcement cage is hoisted to 1 meter from the ground, the main hoisting tool is hooked, and the auxiliary hoisting tool is commanded to be matched with the hook at any time according to the distance between the tail part of the steel reinforcement cage and the ground;
step 14: in the process of lifting the reinforcement cage, the main hoisting tool rotates the rod to the auxiliary hoisting side, and the auxiliary hoisting tool enables the reinforcement cage to be vertical to the ground;
step 15: removing the shackle of a lifting point of an auxiliary lifting tool on the reinforcement cage;
step 16: the main hoisting tool cage is commanded to enter the groove, the steel bar cage is positioned according to the steel bar cage through the construction tool, the steel bar cage is lowered to the designed elevation, and the steel bar cage is placed on the guide wall through the double-spliced channel steel and the hoisting bars, so that the hoisting of the steel bar cage is completed;
step 17: the grouting pipe extends into the steel reinforcement cage, and grouting operation is performed after the grouting pipe is positioned by a construction tool.
Further, the construction tool comprises a grouting pipe supporting frame and a guiding device, wherein the grouting pipe supporting frame is arranged on one side of the bottom of the steel reinforcement cage, and the guiding device is arranged on one side of the steel reinforcement cage.
Further, the grouting pipe support frame comprises a stand column, a cross support plate, a first limit rod and a second limit rod, wherein the stand column is welded to the bottom of the inside of the reinforcement cage, the cross support plate is welded to the top of the stand column, and the first limit rod and the second limit rod are sequentially welded to the top of the cross support plate from inside to outside.
Further, guider includes mount, swinging arms, leading wheel, trace and pneumatic cylinder, first recess has been seted up at the top of mount, the second recess has been seted up to one side of mount, the mount with inside one side of steel reinforcement cage is connected, the swinging arms set up in the inside of second recess, just the one end of swinging arms extends to the outside of steel reinforcement cage, the middle part of swinging arms with the mount is articulated, the swinging arms keep away from the one end of steel reinforcement cage is articulated with the leading wheel, the one end of trace pass through the pneumatic cylinder with the top of mount is connected, just the both ends of pneumatic cylinder respectively with the top of mount with the one end of trace is articulated, the trace with the mount is parallel arrangement, the other end of swinging arms is articulated with the trace, the other end of trace link up first recess and extend to the inside of mount.
Further, the number of the guide devices is four, and the four guide devices are respectively arranged around the inside of the reinforcement cage.
Compared with the prior art, the invention has the beneficial effects that:
1. through carrying out the setting of reinforcing simultaneously carrying out many hoisting points to the skeleton and the hoisting point of steel reinforcement cage, reached and avoided taking place deformation in the steel reinforcement cage hoist and mount in-process and lead to the steel reinforcement cage to block at the inside problem of slot section easily.
2. In-process of placing the groove section under the steel reinforcement cage, through adjusting the length of pneumatic cylinder, the trace drives the swinging arms swing, swinging arms drive the leading wheel change position, reach the interval between adjustment leading wheel and the groove section inner wall, make leading wheel and the laminating of groove section inner wall, guide and restrict the position of steel reinforcement cage, avoided needing artifical manual control steel reinforcement cage position, thereby promote the security, can prevent the steel reinforcement cage card inside the groove section through the guide simultaneously, make the inside to the design elevation of entering groove section that the steel reinforcement cage can be better, promote the quality of engineering and guarantee the construction progress.
3. After fixing the reinforcement cage, insert the slip casting pipe on the slip casting pipe support frame, inside the grout outlet of slip casting pipe was inserted to first gag lever post, limit the mouth of pipe position of slip casting pipe through first gag lever post and second gag lever post, stand and cross backup pad play the supporting role to the pulp pipe mouth of pipe simultaneously, raise the position of slip casting pipe, keep apart with the trough section bottom, avoid slip casting pipe grout outlet to block up, avoid the slip casting pipe to insert the bottom of trough section and lead to the grout outlet of slip casting pipe to block up, cause the not smooth problem of grout outlet.
The foregoing description is only an overview of the present invention, and is intended to be implemented in accordance with the teachings of the present invention in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present invention more readily apparent.
Drawings
Fig. 1 is a schematic flow diagram of a hoisting method for a steel reinforcement cage of a complex underground engineering according to an embodiment of the invention;
fig. 2 is a schematic view of a reinforcement cage and a construction tool mounting structure according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A;
fig. 4 is a schematic structural view of a grouting pipe supporting frame according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a guiding device according to an embodiment of the present invention.
Reference numerals: 1. a reinforcement cage; 2. grouting pipe support frame; 21. a column; 22. a cross support plate; 23. a first stop lever; 24. a second limit rod; 3. a guide device; 31. a fixing frame; 311. a first groove; 312. a second groove; 32. a swinging rod; 33. a guide wheel; 34. a linkage rod; 35. and a hydraulic cylinder.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1, a construction method of a complex underground engineering reinforcement cage comprises the following steps:
specifically, the lifting tool selects two crawler cranes as the lifting tool, one of the two crawler cranes is set as a main lifting tool, the other one of the two crawler cranes is set as an auxiliary lifting tool, the maximum lifting force of the selected crawler crane is not more than 0.8 times of the limit lifting force of the crawler crane, the stress of a lifting point can be effectively reduced by adopting the double lifting tools to carry out multi-point lifting on the reinforcement cage 1, and meanwhile, the occurrence of safety accidents can be effectively reduced by selecting the proper lifting tool according to the weight of the reinforcement cage 1, and meanwhile, the construction progress can be ensured.
specifically, 2 lifting points are transversely arranged according to the width of the reinforcement cage 1, 6 lifting points are arranged according to the length direction of the reinforcement cage 1, 2 points are arranged on a main lifting tool, and 4 points are arranged on the main lifting tool. The stress at the lifting point can be effectively reduced by adopting multi-point lifting, so that deformation in the lifting process is avoided, and the reinforcement cage 1 is clamped when entering a groove.
specifically, the following expression is adopted for the steel wire rope to judge whether the steel wire rope meets the hoisting requirement:
；
wherein: s is the strength of the steel wire rope;
a is the conversion coefficient of the breaking force of the steel wire rope;
p is the sum of breaking force of the steel wire rope;
k is the safety coefficient of the steel wire rope;
and selecting a steel wire rope with the S calculated and larger than the weight of the reinforcement cage 1.
The specific value of K is obtained by consulting a lifting and hoisting general data handbook, for example, the safety coefficient for the motorized lifting equipment is 5-6, and K is 6.
Step 4, reinforcing the reinforcement cage framework ribs, wherein (1) the longitudinal and transverse trusses of the reinforcement cage 1 are used as lifting trusses, and lifting points are arranged at the intersection points of the longitudinal and transverse trusses, so that the reinforcement cage 1 is sufficiently rigid when lifted to prevent the reinforcement cage 1 from generating non-restorable deformation; (2) the angle-width and special-width steel reinforcement cages 1 are additionally provided with a vertical lifting truss, a horizontal lifting truss and a lifting point, and a herringbone truss and a diagonal brace are additionally arranged for reinforcement so as to prevent the steel reinforcement cages 1 from deforming when the steel reinforcement cages are overturned in the air;
step 5, welding the hanging points of the reinforcement cage, wherein the cross points of the horizontal bars of the reinforcement cage 1 and the truss reinforcement bars, the range of the hanging points of the horizontal bars and the hanging points of the reinforcement cage 2m, the positions of the cage openings of the reinforcement cage 1 and the frame within a certain range are preferably firmly welded by 100%, and other positions can be welded by 50%; the welding of the lifting points of the reinforcement cage 1 and the main reinforcement adopts single-sided welding, the welding of the reinforcing ribs adopts double-sided welding, and the welding of the lifting ribs adopts double-sided welding; before the steel bar welding construction, rust spots, greasy dirt and sundries on the welding parts of the steel bars and the steel plates and on the surfaces of the contact parts of the steel bars and the electrodes should be removed, and when the end parts of the steel bars are bent and twisted, straightening and cutting should be carried out; the grounding wire and the steel bar are in close contact; slag should be removed in time in the welding process, the surface of the welding seam should be smooth, the residual height of the welding seam should be in smooth transition, and the arc pit should be filled;
specifically, upper bar welding or lap welding is adopted, the thickness of a welding line is not smaller than 0.3 times of the diameter of the main rib, and the width is not smaller than 0.8 times of the diameter of the main rib; the length of the single-sided welding seam is not less than 10 times of the diameter of the main rib, and the length of the double-sided welding seam is not less than 5 times of the diameter of the main rib.
Step 6, reinforcing the horizontal hoisting hanging point of the reinforcement cage, arranging a 'nearly' shaped reinforcing rib on the hanging point arranged on the reinforcement cage 1, wherein the reinforcing rib adopts phi 28 reinforcing bars, and a phi 25 reinforcing bar is added in the width direction at the position of the hanging point and welded with the longitudinal reinforcing bars to be used as the hanging point for reinforcement;
step 7, reinforcing a lifting point when the reinforcement cage is vertical, wherein phi 28 reinforcement bars are adopted and positioned at a position 1m away from the top of the reinforcement cage 1 and are flush with the first horizontal reinforcement bar and serve as lifting points when the reinforcement cage 1 is vertical;
step 8, the steel reinforcement cage hanging bar is arranged, and is made of phi 28 round steel, double-sided welding is adopted for welding, the hanging bar top is arranged in a double-ring mode, an upper ring is a hanging hook ring, a lower ring is a rest ring, and the hanging bar length is comprehensively considered and arranged according to the height of a top plate of the steel reinforcement cage 1, the elevation of the top surface of a guide wall and the deformation of a hanging ring after hoisting;
step 9, setting a pavement, namely setting a construction pavement with the thickness of 250mm by using single-layer bidirectional phi 14@200 reinforcing bars and setting concrete with the strength of C30;
specifically, the road is connected with the upper wing plate of the guide wall to meet construction requirements, meanwhile, the strength of the construction channel can enable the lifting tool to be more stable in the process that the lifting tool moves the reinforcement cage, and safety is enhanced.
Step 10, hoisting and pouring the reinforcement cage, hoisting the reinforcement cage 1 into a groove section through a hoisting tool, and pouring concrete through a grouting pipe;
specifically, step 11: commanding the main hoisting tool and the auxiliary hoisting tool to be transferred to a hoisting position, and installing shackles of the hoisting points;
step 12: after the installation condition of the wire ropes of the two hoisting tools and the gravity center of the stress are checked, the hoisting is started at the same time;
step 13: after the reinforcement cage 1 is lifted to 1 meter from the ground, the main hoisting tool is hooked, and the auxiliary hoisting tool is commanded to be matched with the hook at any time according to the distance between the tail of the reinforcement cage 1 and the ground;
step 14: in the process of lifting the reinforcement cage 1, a main hoisting tool rotates a rod to the side of an auxiliary hoisting tool, and the auxiliary hoisting tool enables the reinforcement cage 1 to be vertical to the ground;
step 15: removing the shackle of a lifting point of an auxiliary lifting tool on the reinforcement cage 1;
step 16: the main hoisting tool cage is commanded to enter a groove, the steel reinforcement cage 1 is positioned according to the steel reinforcement cage 1 through a construction tool, the steel reinforcement cage 1 is lowered to a designed elevation, and the steel reinforcement cage 1 is placed on a guide wall through double-spliced channel steel and hoisting bars to finish hoisting of the steel reinforcement cage 1;
step 17: the grouting pipe is extended into the steel reinforcement cage 1, and grouting operation is performed after the grouting pipe is positioned by a construction tool.
Referring to fig. 2 to 5, the construction tool includes a grouting pipe support frame 2 and a guide 3, the grouting pipe support frame 2 is disposed at one side of the bottom of the interior of the reinforcement cage 1, and the guide 3 is disposed at one side of the interior of the reinforcement cage 1.
Specifically, in-process of placing the groove section under steel reinforcement cage 1, as shown in fig. 2, steel reinforcement cage 1 is in vertical state this moment, through adjusting the position of guider 3, make the inside contact of guider 3 and groove section, guide and restrict the position of steel reinforcement cage 1, the manual control steel reinforcement cage 1 position of needs has been avoided, thereby promote the security, simultaneously can prevent steel reinforcement cage 1 card inside the groove section through the guide of guider 3, make the inside to the design elevation of entering groove section that steel reinforcement cage 1 can be better, promote the quality of engineering and guarantee the construction progress, insert the slip casting pipe on slip casting pipe support frame 2 after fixed steel reinforcement cage 1, the play thick liquid mouth position of fixed slip casting pipe through slip casting pipe support frame 2, avoid the slip casting pipe to insert the bottom of groove section simultaneously and lead to the play thick liquid mouth of slip casting pipe to block up, cause the unsmooth problem of play thick liquid.
Referring to fig. 2 to 4, the grouting pipe supporting frame 2 comprises a vertical column 21, a cross supporting plate 22, a first limiting rod 23 and a second limiting rod 24, wherein the vertical column 21 is welded at the bottom of the interior of the reinforcement cage 1, the cross supporting plate 22 is welded at the top of the vertical column 21, and the first limiting rod 23 and the second limiting rod 24 are sequentially welded at the top of the cross supporting plate 22 from inside to outside.
Specifically, after fixing reinforcement cage 1, insert the slip casting pipe on slip casting pipe support frame 2, inside the grout outlet of slip casting pipe is inserted to first gag lever post 23, limit the mouth of pipe position of slip casting pipe through first gag lever post 23 and second gag lever post 24, stand 21 and cross backup pad 22 play the supporting role to the pulp pipe mouth of pipe simultaneously, raise the position of slip casting pipe, keep apart with the trough section bottom, avoid slip casting pipe grout outlet to block up, avoid the slip casting pipe to insert the bottom of trough section and lead to the grout outlet of slip casting pipe to block up, cause the not smooth problem of grout outlet.
Referring to fig. 2 to 3 and 5, the guide device 3 includes a fixing frame 31, a swing rod 32, a guide wheel 33, a link 34 and a hydraulic cylinder 35, a first groove 311 is formed at the top of the fixing frame 31, a second groove 312 is formed at one side of the fixing frame, the fixing frame 31 is connected with one side of the inside of the reinforcement cage 1, the swing rod 32 is arranged in the second groove 312, one end of the swing rod 32 extends to the outside of the reinforcement cage 1, the middle part of the swing rod 32 is hinged with the fixing frame 31, one end of the swing rod 32 far away from the reinforcement cage 1 is hinged with the guide wheel 33, one end of the link 34 is connected with the top of the fixing frame 31 through the hydraulic cylinder 35, two ends of the hydraulic cylinder 35 are respectively hinged with the top of the fixing frame 31 and one end of the link 34, the link 34 is arranged in parallel with the fixing frame 31, the other end of the swing rod 32 is hinged with the link 34, the other end of the link 34 penetrates through the first groove 311 and extends to the inside of the fixing frame 31, the number of the guide devices 3 is four, and the four guide devices 3 are respectively arranged around the inside of the reinforcement cage 1.
Specifically, in the process of placing the groove section under the reinforcement cage 1, through adjusting the length of the hydraulic cylinder 35, the linkage rod 34 drives the swinging rod 32 to swing, the swinging rod 32 drives the guide wheel 33 to change the position, the distance between the guide wheel 33 and the inner wall of the groove section is adjusted, the guide wheel 33 is attached to the inner wall of the groove section, the position of the reinforcement cage 1 is guided and limited, the position of the reinforcement cage 1 is prevented from being manually controlled, the safety is improved, meanwhile, the reinforcement cage 1 can be prevented from being blocked inside the groove section through guiding, the reinforcement cage 1 can better enter the groove section to reach the design elevation, the engineering quality is improved, and the construction progress is ensured.
Specifically, through reinforcing skeleton and hoisting point to steel reinforcement cage 1, set up construction tool in the steel reinforcement cage 1 after the reinforcing simultaneously, solved the easy card of steel reinforcement cage 1 in the slot section in the current continuous underground wall construction process and the grout outlet jam of slip casting pipe, cause the not smooth problem of grout outlet.
It should be noted that, the specific model specification of the hydraulic cylinder 35 needs to be determined by selecting a model according to the actual specification of the device, and the specific model selection calculation method adopts the prior art in the field, so detailed description is omitted.
The power supply of the hydraulic cylinder 35 and its principle will be clear to a person skilled in the art and will not be described in detail here.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (7)
1. The construction method of the complex underground engineering reinforcement cage is characterized by comprising the following steps of:
step 1, selecting a hoisting tool, wherein the hoisting tool is selected according to the size and the weight of a reinforcement cage;
in the step 1, two crawler cranes are selected as hoisting tools, one of the two crawler cranes is set as a main hoisting tool, the other one is set as an auxiliary hoisting tool, and the maximum hoisting weight of the selected crawler crane is not more than 0.8 times of the limit hoisting weight of the crawler crane;
step 2, arranging lifting points of the lifting tools, and distributing the lifting points after analyzing the selected lifting tools;
step 3, selecting a steel wire rope, and selecting a steel wire rope for hoisting according to a steel reinforcement cage to be hoisted;
in the step 3, the steel wire rope judges whether the steel wire rope meets the hoisting requirement by adopting the following expression:
；
wherein: s is the strength of the steel wire rope;
a is the conversion coefficient of the breaking force of the steel wire rope;
p is the sum of breaking force of the steel wire rope;
k is the safety coefficient of the steel wire rope;
selecting a steel wire rope with S being larger than the weight of the steel reinforcement cage;
step 4, reinforcing the reinforcement cage framework ribs, wherein (1) the longitudinal and transverse trusses of the reinforcement cage are used as lifting trusses, and lifting points are arranged at the intersection points of the longitudinal and transverse trusses, so that the reinforcement cage is sufficiently rigid when lifted to prevent the reinforcement cage from generating irreversible deformation; (2) the angle-width and special-width steel reinforcement cages are additionally provided with a vertical lifting truss, a horizontal lifting truss and a lifting point, and a herringbone truss and a diagonal brace are additionally arranged for reinforcement so as to prevent the steel reinforcement cages from deforming when the steel reinforcement cages are overturned in the air;
step 5, welding the hanging points of the reinforcement cage, wherein the cross points of the horizontal reinforcement of the reinforcement cage and the truss reinforcement, the 2m range of the hanging points, the positions of the openings of the reinforcement cage and the frame within a certain range are preferably firmly welded by 100%, and other positions can be welded by 50%; the steel reinforcement cage hanging points and the main bars are welded by single-sided welding, the reinforcing bars are welded by double-sided welding, and the hanging bars are welded by double-sided welding; before the steel bar welding construction, rust spots, greasy dirt and sundries on the welding parts of the steel bars and the steel plates and on the surfaces of the contact parts of the steel bars and the electrodes should be removed, and when the end parts of the steel bars are bent and twisted, straightening and cutting should be carried out; the grounding wire and the steel bar are in close contact; slag should be removed in time in the welding process, the surface of the welding seam should be smooth, the residual height of the welding seam should be in smooth transition, and the arc pit should be filled;
step 6, reinforcing the horizontal hoisting hanging point of the steel reinforcement cage, arranging a 'nearly' shaped reinforcing rib on the hanging point of the steel reinforcement cage, wherein the reinforcing rib adopts phi 28 steel bars, and a phi 25 steel bar is added in the width direction at the position of the hanging point to be welded with the longitudinal steel bars to be used as the hanging point for reinforcement;
step 7, reinforcing the lifting points when the reinforcement cage is vertical, wherein phi 28 reinforcement bars are adopted and positioned at a position 1m away from the top of the reinforcement cage and are flush with the first horizontal reinforcement mass to serve as the lifting points when the reinforcement cage is vertical;
step 8, arranging a steel reinforcement cage hanging bar, wherein phi 28 round steel is adopted for manufacturing, double-sided welding is adopted for welding, a double-ring is adopted for the top of the hanging bar, an upper ring is a hanging hook ring, a lower ring is a rest ring, and the length of the hanging bar is comprehensively considered and arranged according to the height of a steel reinforcement cage top plate, the elevation of the top surface of a guide wall and the deformation of a hanging ring after lifting;
step 9, setting a pavement, namely setting a construction pavement with the thickness of 250mm by using single-layer bidirectional phi 14@200 reinforcing bars and setting concrete with the strength of C30;
step 10, hoisting and pouring the reinforcement cage, hoisting the reinforcement cage into the groove section through a hoisting tool, and pouring concrete through a grouting pipe;
the step 10 includes:
step 11: commanding the main hoisting tool and the auxiliary hoisting tool to be transferred to a hoisting position, and installing shackles of the hoisting points;
step 12: after the installation condition of the wire ropes of the two hoisting tools and the gravity center of the stress are checked, the hoisting is started at the same time;
step 13: after the steel reinforcement cage is hoisted to 1 meter from the ground, the main hoisting tool is hooked, and the auxiliary hoisting tool is commanded to be matched with the hook at any time according to the distance between the tail part of the steel reinforcement cage and the ground;
step 14: in the process of lifting the reinforcement cage, the main hoisting tool rotates the rod to the auxiliary hoisting side, and the auxiliary hoisting tool enables the reinforcement cage to be vertical to the ground;
step 15: removing the shackle of a lifting point of an auxiliary lifting tool on the reinforcement cage;
step 16: the main hoisting tool cage is commanded to enter the groove, the steel bar cage is positioned according to the steel bar cage through the construction tool, the steel bar cage is lowered to the designed elevation, and the steel bar cage is placed on the guide wall through the double-spliced channel steel and the hoisting bars, so that the hoisting of the steel bar cage is completed;
step 17: the grouting pipe extends into the steel reinforcement cage, and grouting operation is performed after the grouting pipe is positioned by a construction tool.
2. The construction method of the complex underground engineering steel reinforcement cage according to claim 1, which is characterized by comprising the following steps: in the step 2, 2 lifting points are transversely arranged according to the width of the reinforcement cage, 6 lifting points are arranged according to the length direction of the reinforcement cage, 2 points are arranged on a main lifting tool, and 4 points are arranged on the main lifting tool.
3. The construction method of the complex underground engineering steel reinforcement cage according to claim 1, which is characterized by comprising the following steps: in the step 5, upper bar welding or lap welding is adopted, the thickness of a welding line is not smaller than 0.3 times of the diameter of the main rib, and the width is not smaller than 0.8 times of the diameter of the main rib; the length of the single-sided welding seam is not less than 10 times of the diameter of the main rib, and the length of the double-sided welding seam is not less than 5 times of the diameter of the main rib.
4. The construction method of the complex underground engineering steel reinforcement cage according to claim 1, which is characterized by comprising the following steps: the construction tool comprises a grouting pipe support frame and a guiding device, wherein the grouting pipe support frame is arranged on one side of the bottom of the steel reinforcement cage, and the guiding device is arranged on one side of the steel reinforcement cage.
5. The construction method of the complex underground engineering steel reinforcement cage according to claim 4, which is characterized in that: the grouting pipe support frame comprises an upright post, a cross support plate, a first limit rod and a second limit rod, wherein the upright post is welded to the bottom of the inside of the reinforcement cage, the cross support plate is welded to the top of the upright post, and the first limit rod and the second limit rod are sequentially welded to the top of the cross support plate from inside to outside.
6. The construction method of the complex underground engineering steel reinforcement cage according to claim 4, which is characterized in that: the guide device comprises a fixing frame, a swinging rod, guide wheels, a linkage rod and a hydraulic cylinder, wherein a first groove is formed in the top of the fixing frame, a second groove is formed in one side of the fixing frame, the fixing frame is connected with one side of the inside of the reinforcement cage, the swinging rod is arranged in the second groove, one end of the swinging rod extends to the outside of the reinforcement cage, the middle of the swinging rod is hinged to the fixing frame, one end of the swinging rod, far away from the reinforcement cage, is hinged to the guide wheels, one end of the linkage rod is connected with the top of the fixing frame through the hydraulic cylinder, two ends of the hydraulic cylinder are respectively hinged to the top of the fixing frame and one end of the linkage rod, the linkage rod is arranged in parallel with the fixing frame, the other end of the swinging rod is hinged to the linkage rod, and the other end of the linkage rod penetrates through the first groove and extends to the inside of the fixing frame.
7. The construction method of the complex underground engineering steel reinforcement cage according to claim 6, wherein the construction method comprises the following steps: the number of the guide devices is four, and the four guide devices are respectively arranged around the inside of the reinforcement cage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210912094.4A CN115233656B (en) | 2022-07-29 | 2022-07-29 | Construction method of complex underground engineering reinforcement cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210912094.4A CN115233656B (en) | 2022-07-29 | 2022-07-29 | Construction method of complex underground engineering reinforcement cage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115233656A CN115233656A (en) | 2022-10-25 |
| CN115233656B true CN115233656B (en) | 2023-06-02 |
Family
ID=83678124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210912094.4A Active CN115233656B (en) | 2022-07-29 | 2022-07-29 | Construction method of complex underground engineering reinforcement cage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115233656B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3099677B2 (en) * | 1995-04-10 | 2000-10-16 | 株式会社大林組 | Reinforcing cage and assembly method thereof |
| CN109914388A (en) * | 2019-03-05 | 2019-06-21 | 上海市基础工程集团有限公司 | Steel reinforcement cage reinforcing device and method that ultra-deep underground continuous wall is overweight |
| CN109969946A (en) * | 2019-04-09 | 2019-07-05 | 西南林业大学 | A kind of diaphram wall steel reinforcement cage hoisting and hanging construction safety method |
| CN110847156A (en) * | 2019-11-27 | 2020-02-28 | 中铁九局集团第四工程有限公司 | Steel reinforcement cage suitable for underground diaphragm wall of air shaft and use method |
| CN214783820U (en) * | 2021-06-02 | 2021-11-19 | 中建一局集团建设发展有限公司 | Lifting point reinforced overweight underground continuous wall reinforcement cage |
| CN114229695B (en) * | 2021-11-29 | 2024-04-19 | 中交一公局集团有限公司 | Hoisting method of special-shaped reinforcement cage of underground diaphragm wall |
-
2022
- 2022-07-29 CN CN202210912094.4A patent/CN115233656B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN115233656A (en) | 2022-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113353782B (en) | Low-clearance ground wall-connected reinforcement cage rapid hoisting construction method | |
| CN208815424U (en) | A kind of bridge descending hanging basket | |
| CN109973112B (en) | Super-large-dip-angle narrow-space tunnel anchor cable saddle gantry system and installation method thereof | |
| CN213834278U (en) | Dig a major diameter overlength steel reinforcement cage hoist and mount auxiliary device soon | |
| CN104652813A (en) | Tower crane construction technology used for super high-rise building steel structure | |
| WO2020098394A1 (en) | Gob-side entry confined concrete supporting construction device and mechanized construction method | |
| CN103132702A (en) | Longspan pipe truss pulling bar lifting and overhead rotating emplacing construction method | |
| CN115233656B (en) | Construction method of complex underground engineering reinforcement cage | |
| CN108222006B (en) | Construction method of square underground continuous wall | |
| CN103255767B (en) | Faceplate sliding formwork with traveling device | |
| CN103615198A (en) | Construction method for using parallel double-mast half-turning method to hoist large box type derrick | |
| CN206267031U (en) | A kind of solid pier climbing support of bridge construction | |
| CN210713752U (en) | High-altitude operation construction hanging basket capable of moving in three-dimensional space | |
| CN209685125U (en) | A kind of overhead large-span steel structure vestibule Integral synchronous lifting device | |
| CN101768925B (en) | Mounting equipment of beam falling prevention stopping block and construction method thereof | |
| CN113668401B (en) | Hoisting process based on installation and transportation platform on long-span bridge pier | |
| CN110184957A (en) | The construction method of hangar tunnel and steel corrugated plating Combined wind resistant snow system | |
| CN214573768U (en) | Self-climbing sliding formwork pouring system for second-stage concrete pouring of gate slot | |
| CN108518071A (en) | The installation method of the double-deck large-span steel vestibule | |
| CN108612317A (en) | A kind of band waves column type gate-type combination steel frame construction installation method | |
| CN211522886U (en) | Cast-in-place bent cap formwork system | |
| CN209923791U (en) | Workpiece for cross-line construction of formwork suspension casting combined system | |
| CN113666280A (en) | Method for manufacturing and hoisting reinforcement cage for impervious wall construction | |
| CN206693239U (en) | The cast-in-place device of bridge machine T beams is realized on a kind of high-altitude thin-wall | |
| CN202788877U (en) | Horizontal-vertical loading tunnel combined type full space supporting and propping frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |