CN112211091A - Reinforced corrugated pipe grouting anchoring connection structure and fullness detection method thereof - Google Patents
Reinforced corrugated pipe grouting anchoring connection structure and fullness detection method thereof Download PDFInfo
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- CN112211091A CN112211091A CN202011182093.6A CN202011182093A CN112211091A CN 112211091 A CN112211091 A CN 112211091A CN 202011182093 A CN202011182093 A CN 202011182093A CN 112211091 A CN112211091 A CN 112211091A
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- 238000004873 anchoring Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 title claims description 22
- 239000002002 slurry Substances 0.000 claims abstract description 66
- 239000000463 material Substances 0.000 claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 34
- 239000010959 steel Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000011440 grout Substances 0.000 claims description 35
- 239000011178 precast concrete Substances 0.000 claims description 22
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 7
- 229910052755 nonmetal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 15
- 239000004567 concrete Substances 0.000 description 9
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 239000003566 sealing material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/08—Members specially adapted to be used in prestressed constructions
- E04C5/12—Anchoring devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
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- Analytical Chemistry (AREA)
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- Architecture (AREA)
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Abstract
The invention provides a grouting and anchoring connection structure of a steel bar corrugated pipe and a method for detecting the fullness of the grouting and anchoring connection structure. The invention can conveniently check the fullness of the grouting material in the inner cavity of the slurry storage and discharge device, and thus, the fullness information of the grouting material in the grouting corrugated pipe can be obtained.
Description
Technical Field
The invention relates to a grouting and anchoring connection structure of a steel corrugated pipe used for anchoring and connecting precast concrete members, and further relates to a corresponding grouting and connecting plumpness detection method of the corrugated pipe.
Background
In the prefabricated concrete structure building, the bent cap of the prefabricated concrete bridge structure is connected with the pier stud by anchoring, the pier stud is connected with the base, or the concrete hanging plate of the prefabricated frame structure is connected with the lower part structure by anchoring, and in the hanging plate wall of some house building structures, the mode of anchoring and connecting the reinforcing steel bars by grouting metal corrugated pipes is often adopted. Usually, the corrugated pipe is pre-embedded at the lower end of the upper component, for example, the grouting corrugated pipe of the prefabricated capping beam is arranged at the bottom of the component, when in connection, the connecting reinforcing steel bar extending upwards from the lower pier stud structure is upwards inserted into the grouting corrugated pipe at the lower end of the capping beam, the horizontal joint between the capping beam and the pier stud is filled with cushion layer mortar or base slurry, after the lower port of the corrugated pipe is sealed, the grouting pore reserved on the side surface of the capping beam is used for grouting into the corrugated pipe, and after the grouting slurry is filled into each inner cavity of the corrugated pipe, the grouting connection of the prefabricated component is completed; the concrete hanging plate of the assembly type frame structure is similar to the anchoring connection of the lower structure.
The corrugated pipe grouting connection is generally applied in the assembled bridge engineering, but the height of the grouting corrugated pipe is generally more than 1 meter, and the problem of slurry surface reduction possibly occurs due to various reasons after the grouting corrugated pipe is filled with slurry, so that the defect of insufficient anchoring length is caused, but the corrugated pipe grouting anchoring connection is a node buried in a concrete member, belongs to concealed engineering, does not have a convenient and reliable detection and defect repair method at present, and mainly shows three aspects:
the grouting filling degree of the inner cavity of the corrugated pipe is difficult to detect, the existing grouting corrugated pipe is provided with a grout inlet and outlet hole in the side wall of the corrugated pipe, grouting materials are injected from the grout inlet and outlet holes to fill all gaps in the corrugated pipe, and due to the fact that the grouting corrugated pipe is made of metal materials, the filling degree of the grouting materials inside the corrugated pipe cannot be accurately detected by ultrasonic waves, elastic waves and the like. The internal condition of the corrugated pipe can be clearly displayed by X-ray detection, but the detection cost is high, the detection is also limited by the thickness of a concrete member and the arrangement condition of the corrugated pipe, and a satisfactory image is difficult to obtain by a portable ray apparatus for detecting the member with the thickness of more than 300mm and the prefabricated bent cap of the double-row corrugated pipe. The existing sensor method for detecting the grouting fullness of the pipe and the steel wire drawing method are both used for indirectly judging whether the grouting material at the grout outlet is full, and the grouting material fullness in the corrugated pipe is difficult to detect;
secondly, the physical strength of the grouting material in the corrugated pipe is difficult to detect, in engineering, standard curing grouting material compressive strength test blocks are manufactured under the same field condition to serve as the basis for judging the strength of the grouting material in the corrugated pipe, but if the field grouting material compressive strength test blocks are not cured properly and the detection result is unqualified, the problem is very complicated to process, and if the real grouting material strength detection result cannot be obtained to serve as acceptance data, serious quality hidden troubles can be buried in the engineering;
thirdly, when the grouting material in the grouting corrugated pipe is not full, no matter the grouting material is supplemented into the corrugated pipe from a grouting hole of the corrugated pipe, or member concrete covered on the surface of the corrugated pipe is removed, and then the grouting is supplemented after drilling is performed on the corrugated pipe, the repairing methods are labor-consuming and labor-consuming, and the grouting quality cannot be visually confirmed, so that the repairing difficulty of the grouting failure is high, the production efficiency is low, and many engineering projects are reluctant to detect and find grouting defects, even conceal the problems.
In conclusion, if the filling degree or strength of the grouting material in the grouting corrugated pipe does not meet the design requirements, problems cannot be found or defects cannot be repaired, hidden dangers are brought to the safety of the building structure, and if the problems faced by the grouting connection of the corrugated pipe are not solved, the popularization and the health development of the assembled building in China are affected, and even the technical backing up may occur. Therefore, the difficult problems of detection of grouting bellows plumpness and grouting material strength in the bellows are solved, and the development of a new bellows grouting plumpness repairing method is an urgent requirement of the current assembly type concrete building.
Disclosure of Invention
The invention aims to: the utility model provides a steel bellows grout anchor connection structure and plumpness detection method thereof, solves the above-mentioned technical problem that exists among the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a corrugated steel bar pipe grout anchor connection structure, will be located the precast concrete component on upper portion and the vertical reinforcing bar of the lower part structure body that is located the lower part and carry out the anchor and be connected its characterized in that:
the lower structure body is provided with a lower reinforcing steel bar which extends upwards into the grouting corrugated pipe;
a grouting corrugated pipe is prefabricated in the precast concrete component, the upper part of the grouting corrugated pipe is a grout outlet end, and the lower part of the grouting corrugated pipe is a grouting end and can be penetrated by a lower reinforcing steel bar;
the grout outlet end of the grouting corrugated pipe is connected with a grout storage and outlet device, the top of the grout storage and outlet device is sealed, the bottom of the grout storage and outlet device is provided with a corrugated pipe connecting end for being in sealing connection with the upper end of the grout outlet end of the grouting corrugated pipe, and the upper part of the grout storage and outlet device is provided with a grout outlet nozzle.
The grouting and anchoring connection structure of the steel bar corrugated pipe is characterized in that the grouting corrugated pipe is a rigid cylindrical metal pipe with a concave-convex structure on the surface of an inner cavity, the wall thickness of the pipe is 1-8 mm, and the minimum inner diameter of the pipe is not less than the nominal diameter value of the lower steel bar and is not less than +20 mm.
The steel bar corrugated pipe grouting anchoring connection structure is characterized in that the slurry storage and discharge device is of a single-piece integral structure or a multi-piece combined structure.
The steel bar corrugated pipe grouting anchoring connection structure is characterized in that a slurry outlet nozzle of the slurry storage and outlet device is provided with an elevation angle larger than 0 degree.
The steel bar corrugated pipe grouting anchoring connection structure is characterized in that a slurry outlet nozzle of the slurry storage and outlet device is communicated with a slurry outlet pipe, and the slurry outlet pipe extends outwards to the outer surface of the precast concrete member.
The grouting and anchoring connection structure for the steel corrugated pipe is characterized in that a gap is formed between the precast concrete member and the lower structural body, the grouting end of the grouting corrugated pipe is communicated with the gap, and the grouting end or the gap is communicated with a grouting pipe.
The steel bar corrugated pipe grouting anchoring connection structure is characterized in that the intervals are filled and sealed by seat slurry or cushion layer mortar, side wall grouting holes are formed in the side faces of the grouting ends of the grouting corrugated pipes and are connected with grouting nozzles and grouting pipes or directly connected with the grouting pipes, and the grouting pipes extend outwards to the outer surfaces of the precast concrete members.
The steel bar corrugated pipe grouting and anchoring connection structure is characterized in that the side wall of a grouting end of the grouting corrugated pipe is totally closed, the bottom surface of the grouting end is close to or parallel and level with the end surface of the bottom of the precast concrete component, and the periphery of the interval is closed and communicated with the grouting pipe.
The steel corrugated pipe grouting and anchoring connection structure is characterized in that the side wall of the grout outlet end of the grouting corrugated pipe is totally closed.
The steel corrugated pipe grouting and anchoring connection structure is characterized in that the slurry storage and discharge device is made of a non-metal material.
The method for detecting the fullness of the grouting and anchoring connection structure of the steel corrugated pipe is used, and is characterized by comprising the following steps of:
grouting material is injected to fill the gap between the grouting corrugated pipe and the lower reinforcing steel bar, the slurry storage and discharge device is filled with the grouting material, and the grouting material flows out from a slurry discharge nozzle of the slurry storage and discharge device;
when the fullness is detected, carrying out nondestructive detection or local damage drilling detection on the inner cavity of the slurry storage and discharge device, and checking the fullness of grouting material in the inner cavity of the slurry storage and discharge device;
and obtaining the fullness information of the grouting material in the grouting corrugated pipe by checking whether the grouting material is reserved in the inner cavity of the slurry storage and discharge device.
The beneficial technical effects of the invention are as follows:
1. the upper end of the grouting corrugated pipe is provided with the slurry storage and discharge device, so that when each grouting corrugated pipe is grouted, the upper part of the grouting corrugated pipe stores grouting material with a certain volume by virtue of the slurry storage and discharge device, and if the grouting material in the grouting corrugated pipe leaks from the grouting end, the grouting material in the slurry storage and discharge device at the upper end of the grouting corrugated pipe descends along with the descending of the grouting material surface in the grouting corrugated pipe, so that the inner cavity of the grouting corrugated pipe is supplemented, and the plumpness of the grouting material in the grouting corrugated pipe is effectively ensured;
2. the upper end of the grouting corrugated pipe is provided with the slurry storage and discharge device, the detection of the fullness of the grouting material is moved out of the grouting corrugated pipe from the inside of the grouting corrugated pipe, the fullness of the grouting material in the slurry storage and discharge device can visually reflect the fullness of the grouting material in the grouting corrugated pipe, and the detection difficulty of the fullness of the grouting material in the grouting corrugated pipe is greatly simplified; if grouting materials are left in the slurry storage and discharge device, the inner cavity of the grouting corrugated pipe is full, and when no grouting materials are left in the slurry storage and discharge device, the inner cavity of the grouting corrugated pipe is indicated to be unsaturated at a high probability, and the grouting corrugated pipe can be judged to be unsaturated and needs to be subjected to slurry replenishing operation; because the slurry storage and discharge device is made of non-metal materials, the nondestructive detection or the local damage drilling detection of the inner cavity of the slurry storage and discharge device is more convenient and quicker to implement than the grouting fullness detection of the existing grouting corrugated pipe, the detection cost is greatly reduced, and the detection accuracy is improved;
3. the slurry storage and discharge device provides a simple slurry supplementing scheme, no matter the grouting material in the grouting corrugated pipe is not full or the grouting material in the slurry storage and discharge device is not full, holes can be drilled from the outer side surface of the precast concrete component to the upper part of the slurry storage and discharge device, and slurry is supplemented from the drilled positions, so that the damage of a connecting piece caused by drilling holes on the side wall of the corrugated pipe for the slurry supplementing of the grouting corrugated pipe is avoided, the drilling difficulty of the slurry storage and discharge device position is easier than that of the grouting corrugated pipe, and the slurry supplementing technology, the operation difficulty and the cost of the grouting corrugated pipe are greatly reduced;
4. the method comprises the steps of obtaining a small core block sample of grouting material from a position of a slurry storage and discharge device by adopting a core drilling method, comparing the compression strength of the small core block sample of the grouting corrugated pipe slurry storage and discharge device connected with the same batch of grouting with the compression strength of the small core block sample obtained on the same batch of standard curing compression strength test piece of the grouting material by the same core drilling method, obtaining the relation between the entity grouting material in the batch of grouting corrugated pipe nodes and the known compression strength of the grouting material, and judging whether the compression strength of the entity of the grouting material in the corrugated pipe is qualified or not. The grouting material in the slurry storage and discharge device is completely the same as the grouting material in the corrugated pipe, and the sampling from the slurry storage and discharge device completely solves the international problem that the entity of the grouting material in the corrugated pipe cannot be sampled under the same environmental maintenance condition;
5. the grouting corrugated pipe connecting member can be used for detecting in various ways according to requirements, performing necessary grout supplementing repair on an unsaturated joint, and performing checking calculation or required remedial measures on a joint with insufficient grouting material strength, so that the connection quality and problem treatment of the grouting corrugated pipe have no blind areas or blank points.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of a grouting-anchoring connection structure for a corrugated steel bar grouting pipe according to the present invention;
fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Description of reference numerals: 1-prefabricating a concrete member; 2-slurry storage and discharge device; 3-grouting corrugated pipe; 4-grouting material; 5-lower reinforcing steel bars; 6, end face of the bottom of the precast concrete member; 7-sealing the slurry; 8-a lower structure; 9-sealing the plug; 10-grouting pipe; 11-grouting end; 12-slurry outlet end; 13-bellows connection end; 14-a pulp outlet; 15-slurry outlet pipe; 16-sealing plug of slurry outlet pipe; 18-a grouting nozzle; 19-grouting pipe; 20-sidewall grouting holes; 21-base slurry; 22-sealing cover.
Detailed Description
As shown in fig. 1, the present invention provides a corrugated steel pipe grouting anchoring connection structure, which is applied to the connection of vertical steel bars between a precast concrete member 1 located at the upper portion and a lower structural body 8 located at the lower portion, wherein:
a space is arranged between the precast concrete member 1 and a lower structural body 8, and the lower structural body 8 is provided with a lower reinforcing steel bar 5 which extends upwards to the inside of the grouting corrugated pipe 3;
the precast concrete component 1 is precast with a grouting corrugated pipe 3, the upper part of the grouting corrugated pipe 3 is called as a grout outlet end 12, the lower part of the grouting corrugated pipe 3 is called as a grouting end 11 and can be penetrated by a lower steel bar 5; in the embodiment, the side wall of the grouting end 11 of the grouting corrugated pipe 3 is totally closed, the bottom surface of the grouting end 11 is close to or flush with the end surface 6 of the bottom of the precast concrete member 1, and the lower opening of the grouting end 11 is communicated with the gap; the periphery of the gap is sealed by sealing slurry 7 or other sealing materials and is communicated with a grouting pipe;
the lateral wall of grout bellows 3's play thick liquid end 12 is totally closed, and goes out the upper end of thick liquid end 12 and upwards communicates and have a thick liquid ware 2 of thick liquid storage, thick liquid ware 2 of thick liquid storage is made by non-metallic material, and its top is sealed, the bottom of thick liquid ware 2 of thick liquid storage has bellows link 13, can supply with the upper end sealing connection of grout bellows 3's play thick liquid end 12, the upper portion of thick liquid ware 2 of thick liquid storage has a thick liquid mouth 14, a thick liquid mouth 14 is connected with out thick liquid pipe 15, play thick liquid pipe 15 outwards extends to precast concrete component 1 surface.
The grouting corrugated pipe 3 is a rigid cylindrical metal pipe with an inner cavity surface provided with a concave-convex structure, the pipe wall thickness is 1-8 mm, and the minimum inner diameter of the pipe is not less than the nominal diameter value of the lower steel bar 5 plus 20 mm.
When grouting connection is performed, grouting material 4 is injected through a grouting pipe 10, enters the grouting end 11 of the grouting corrugated pipe 3 upwards after the interval is filled, fills the gap between the grouting end 11 and the lower reinforcing steel bar 5, flows upwards to enter and fill the grout outlet end 12 of the grouting corrugated pipe 3, flows upwards to enter and fill the grout storage and outlet device 2, simultaneously fills the grout outlet nozzle 14 of the grout storage and outlet device 2 and the grout outlet pipe 15 connected with the grout outlet nozzle 14, and flows out of the precast concrete member 1 after the grout outlet pipe 15 is filled.
Wherein, the corrugated pipe connecting end 13 of the pulp storage and discharge device 2 is provided with an elastic sealing material to ensure that the pulp storage and discharge device 2 does not leak pulp at the interface position.
The slurry storage and discharge device 2 is made of non-metal materials, and is of a single-piece integral structure formed by adhering elastic sealing materials to the connecting end 13 of the corrugated pipe, or a multi-piece combined structure formed by combining a plurality of non-metal materials and elastic sealing elements.
Wherein the pulp outlet nozzle 14 of the pulp storage pulp outlet device 2 has an elevation angle larger than 0 degree.
The grouting corrugated pipe 3 is a cylindrical corrugated pipe 3 with a concave-convex structure on the surface of an inner cavity, so that the anchoring capacity between the grouting material 5 and the surface of the inner cavity of the grouting corrugated pipe 3 is enhanced.
The second embodiment of the present invention as shown in fig. 2 is different only in that the gap is filled with a seat slurry (or cushion mortar) 21 and the lower port of the grouting corrugated tube 3 is closed by a sealing cap 22, a side wall grouting hole 20 is formed on the side surface of the grouting end 11 of the grouting corrugated tube 3, the side wall grouting hole 20 is connected with a grouting nozzle 18 and a grouting tube 19 or directly connected with the grouting tube 19, and the grouting tube 19 extends outward to the outer surface of the precast concrete unit 1.
The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (11)
1. The utility model provides a corrugated steel bar pipe grout anchor connection structure, will be located the precast concrete component on upper portion and the vertical reinforcing bar of the lower part structure body that is located the lower part and carry out the anchor and be connected its characterized in that:
the lower structure body is provided with a lower reinforcing steel bar which extends upwards into the grouting corrugated pipe;
a grouting corrugated pipe is prefabricated in the precast concrete component, the upper part of the grouting corrugated pipe is a grout outlet end, and the lower part of the grouting corrugated pipe is a grouting end and can be penetrated by a lower reinforcing steel bar;
the grout outlet end of the grouting corrugated pipe is connected with a grout storage and outlet device, the top of the grout storage and outlet device is sealed, the bottom of the grout storage and outlet device is provided with a corrugated pipe connecting end for being in sealing connection with the upper end of the grout outlet end of the grouting corrugated pipe, and the upper part of the grout storage and outlet device is provided with a grout outlet nozzle.
2. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: the grouting corrugated pipe is a rigid cylindrical metal pipe with a concave-convex structure on the surface of an inner cavity, the wall thickness of the pipe is 1-8 mm, and the minimum inner diameter of the pipe is not less than the nominal diameter value of the lower steel bar plus 20 mm.
3. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: the slurry storage and discharge device is of a single-piece integral structure or a multi-piece combined structure.
4. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: the slurry outlet nozzle of the slurry storage and outlet device has an elevation angle larger than 0 degree.
5. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: and a slurry outlet nozzle of the slurry storage and outlet device is communicated with a slurry outlet pipe, and the slurry outlet pipe extends outwards to the outer surface of the precast concrete member.
6. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: and a space is arranged between the precast concrete member and the lower structural body, the grouting end of the grouting corrugated pipe is communicated with the space, and the grouting end or the space is communicated with a grouting pipe.
7. A corrugated steel bar filled anchor connection structure as claimed in claim 6, wherein: the interval is filled and sealed by seat slurry or cushion layer mortar, a side wall grouting hole is formed in the side face of the grouting end of the grouting corrugated pipe, the side wall grouting hole is connected with a grouting nozzle and a grouting pipe or is directly connected with the grouting pipe, and the grouting pipe extends outwards to the outer surface of the precast concrete component.
8. A corrugated steel bar filled anchor connection structure as claimed in claim 6, wherein: the lateral wall of the grouting end of the grouting corrugated pipe is totally closed, the bottom surface of the grouting end is close to or flush with the end surface of the bottom of the precast concrete member, and the periphery of the gap is closed and communicated with the grouting pipe.
9. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: and the side wall of the grout outlet end of the grouting corrugated pipe is totally closed.
10. A corrugated steel reinforced pipe grouting anchoring connection structure as claimed in claim 1, wherein: the slurry storage and discharge device is made of non-metal materials.
11. A method for detecting the fullness of a grouting and anchoring connection structure of a corrugated steel pipe, which uses the grouting and anchoring connection structure of the corrugated steel pipe as claimed in any one of claims 1 to 10, and is characterized by comprising the following steps:
grouting material is injected to fill the gap between the grouting corrugated pipe and the lower reinforcing steel bar, the slurry storage and discharge device is filled with the grouting material, and the grouting material flows out from a slurry discharge nozzle of the slurry storage and discharge device;
when the fullness is detected, carrying out nondestructive detection or local damage drilling detection on the inner cavity of the slurry storage and discharge device, and checking the fullness of grouting material in the inner cavity of the slurry storage and discharge device;
and obtaining the fullness information of the grouting material in the grouting corrugated pipe by checking whether the grouting material is reserved in the inner cavity of the slurry storage and discharge device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011182093.6A CN112211091A (en) | 2020-10-29 | 2020-10-29 | Reinforced corrugated pipe grouting anchoring connection structure and fullness detection method thereof |
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| CN202011182093.6A CN112211091A (en) | 2020-10-29 | 2020-10-29 | Reinforced corrugated pipe grouting anchoring connection structure and fullness detection method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892891A (en) * | 2022-07-14 | 2022-08-12 | 北京建筑大学 | Grouting-free steel bar connecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114892891A (en) * | 2022-07-14 | 2022-08-12 | 北京建筑大学 | Grouting-free steel bar connecting device |
| CN114892891B (en) * | 2022-07-14 | 2022-10-04 | 北京建筑大学 | Grouting-free steel bar connecting device |
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